Abrégé

Disclosed in the present invention is a method for purifying a biological dust suppressant by means of two-stage ultrafiltration, wherein a target product is separated and purified by means of two-stage ultrafiltration utilizing the differences of various substances in a fermentation liquid in terms of physical characteristics, such as solubility and molecular morphology. The method comprises: subjecting a fermentation liquid to a centrifugal pretreatment to separate off insoluble substances such as microbial cells; allowing the centrifuged fermentation liquid to pass through a first-stage ultrafiltration membrane, thereby intercepting polysaccharides, lactic acid, biological dust suppressant molecules in an aggregation form, etc., the molecular weights of which being larger than 20 kD; adding organic solvents of methanol and ethyl acetate to the retention liquid to dilute same, and further filtering the resulting liquid by means of an ultrafiltration membrane capable of intercepting substances which have a molecular weight greater than 10 kD to obtain a liquid product; and finally subjecting same to rotary evaporation and constant-temperature drying to prepare a solid purified material. The present purification method fully utilizes the differences of various components in the fermentation liquid in terms of physical properties, can effectively improve the separation and purification efficiency and purity of the product, reduce toxic and harmful substances generated during the separation and purification process and lower the cost of the production process, and can be widely used as a purification process during the production and preparation processes of biological dust suppression materials.

Classes IPC  ?

• B01D 61/14 - Ultrafiltration; Microfiltration
• B01D 3/08 - Distillation ou procédés d'échange apparentés dans lesquels des liquides sont en contact avec des milieux gazeux, p.ex. extraction dans des récipients en rotation; Atomisation sur disques tournants
• C09K 3/22 - Substances non couvertes ailleurs pour abattre la poussière ou pour l'absorber

Abrégé

A high-pressure large-flow high-water-based cartridge-type digital throttle valve and a control method, the throttle valve comprising a main valve and pilot valves. The main valve uses a symmetrical cylinder type structure and is provided with an upper control chamber and a lower control chamber which are symmetrical. The pilot valves use a structure of a pair of two-position two-way cartridge-type normally-closed ball valves; each pilot valve uses a normally-open high-speed switching valve as a driver, and controls, by using a PWM signal, the quantity of flow flowing into or out of the main valve lower control chamber, so as to control the pressure of the main valve lower control chamber and overcome a spring force of the main valve, thus pushing the main valve element to move; and a displacement sensor is used for achieving closed-loop accurate control over a displacement of the main valve. The main valve is a cone valve, and the pilot valves and the driver are all ball valves, so that said throttle valve has good sealing and no leakage under a high-water-based or pure-water medium. The pilot valves use two two-position two-way valves which are simple in structure, and processing, assembling and control are easy; the high-speed switching valve is used as the driver, which is inexpensive and highly-resistant to pollution, and has a large output force; and mechanical structures, such as levers or ball screws do not need to be introduced.

Classes IPC  ?

• F15B 13/02 - Dispositifs de distribution ou d'alimentation du fluide caractérisés par leur adaptation à la commande de servomoteurs
• F16K 11/10 - Soupapes ou clapets à voies multiples, p.ex. clapets mélangeurs; Raccords de tuyauteries comportant de tels clapets ou soupapes; Aménagement d'obturateurs et de voies d'écoulement spécialement conçu pour mélanger les fluides dont plusieurs éléments de fermeture ne se déplacent pas comme un tout

Abrégé

Disclosed in the present invention are a spiral cone self-diagnosis pressure reduction system for a weightlessness scale and a self-diagnosis method thereof. The system comprises a suspension frame fixed in a metering bin; a supporting platform is fixed on a bottom plate of the suspension frame; a plurality of coils are provided on the supporting platform and fixed to a base; a spiral cone is rotatably connected to the base; the spiral cone is rotatably connected to the upper end of the base and a base body of the spiral cone is in the shape of a bamboo hat; the upper end of the spiral cone corresponds to a feeding port of the metering bin, and the outer surface of the spiral cone is provided with a spiral blade. According to the present invention, the rotatable spiral cone is used for reducing the pressure of high-speed materials, and the contact positions of the materials and the spiral blade are changed constantly, so that the wear of the materials on the spiral cone is uniformly distributed; the materials are more uniformly dispersed in the metering bin due to being subjected to the rotation of the spiral blade, thereby avoiding the contact wear on a fixed region of the metering bin; and by means of feedback information of a display control unit and an alarm unit, a worker is reminded to replace the spiral cone in time.

Classes IPC  ?

• G01N 27/00 - Recherche ou analyse des matériaux par l'emploi de moyens électriques, électrochimiques ou magnétiques
• H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries
• H02J 7/32 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries pour la charge de batteries par un ensemble comprenant une machine motrice non électrique
• H02K 7/18 - Association structurelle de génératrices électriques à des moteurs mécaniques d'entraînement, p.ex. à des turbines

Abrégé

A cooperative control method for a multi-channel braking system of a mine hoist. The abrasion loss of a brake shoe is obtained by means of detecting, in real time, position information of the brake shoe of each disk brake; an abrasion grade is divided by means of the abrasion degree of the brake shoe; three braking force distribution modes, namely, equal distribution, proportional distribution and exponential distribution, are formulated according to the abrasion grade, so as to dynamically adjust a set braking pressure of each disk brake; and each disk brake tracks and controls the set braking pressure by using a feedback pressure signal of an oil pressure sensor and using a pressure closed-loop control method. Therefore, the cooperative braking control which is based on the abrasion loss of a brake shoe and over a multi-channel braking system of a mine hoist is realized, and the problems of the service life of one or more disk brakes being shortened, the braking performance thereof being reduced, the braking thereof failing, etc., due to uneven abrasion of brake shoes are prevented, such that the usage safety and reliability of the braking system are improved.

Classes IPC  ?

• B66D 5/14 - Freins de grues, d'ascenseurs, de palans ou de treuils opérant sur des tambours, des cylindres ou des cordes avec effet axial comportant des disques
• B66D 5/28 - Dispositifs de fonctionnement pneumatiques ou hydrauliques spécialement adaptés aux mécanismes d'enroulement, p.ex. dans les puits d'extraction de mines
• F16B 21/08 - Dispositifs de fixation largables à action rapide dans lesquels la broche ou l'ergot ont une partie élastique
• F16D 66/02 - Appareils indicateurs d'usure
• G06F 17/10 - Opérations mathématiques complexes

Abrégé

A method and system for reducing the discharge fluctuation of spirally conveying materials for a weightless scale. The method comprises the following steps: 1, optimizing a conveying parameter of a spiral conveyor by means of other optimization algorithms such as a genetic algorithm, so as to ensure a relatively high conveying capacity; 2, optimizing a structural parameter of a funnel (302) by means of other optimization algorithms such as the genetic algorithm, so as to reduce the fluctuation of the quantity of materials falling from a discharge port of the funnel (302); and 3, providing an anti-blocking mechanism to monitor, in real time, materials in the funnel (302) and process the problem of material blocking. The method and system can effectively reduce the fluctuation of outputting materials, and ensure a high material conveying capacity, thereby improving the efficiency of process production.

Classes IPC  ?

• G01G 13/16 - Moyens pour vidanger automatiquement des récipients de pesée, l'opération étant commandée par le mécanisme de pesée
• B65G 33/14 - Transporteurs rotatifs à vis ou à hélice pour matériaux solides fluents comportant une vis ou plusieurs vis enfermées dans un carter tubulaire
• B65G 43/08 - Dispositifs de commande actionnés par l'alimentation, le déplacement ou le déchargement des objets ou matériaux
• B65G 47/44 - Aménagements ou utilisation des trémies ou des colonnes de descente
• B65G 69/00 - Mesures auxiliaires ou dispositifs utilisés en liaison avec le chargement ou le déchargement

Abrégé

Disclosed in the present invention is a roadway surrounding rock stress state detection method based on three-dimensional potential response. The method comprises: collecting potential data of each potential measurement point in a drill hole; then, spreading a roadway contour as a plane along a side line of the strike of a roadway; performing spatial interpolation on all potential measurement points, so as to obtain a three-dimensional potential imaging body, and extracting and drawing a three-dimensional abnormal potential isosurface model; and performing unilateral inversion on an outer side of a drilling area by means of potential measurement points on a potential measurement line at the highest position, and extracting and drawing a three-dimensional abnormal potential inversion probability isosurface model by using a radial basis function surface interpolation method. In the present invention, a three-dimensional potential response digital model, which is jointly formed by a three-dimensional abnormal potential isosurface model and a three-dimensional abnormal potential inversion probability isosurface model, visualizes spatial potential distribution features of roadway surrounding rocks, clearly presents a spatial range, a strike and a development trend of an area in which stress is abnormal, and accurately distinguishes and determines an area for roadway stress state and abnormal potential response.

Classes IPC  ?

• G06T 17/10 - Description de volumes, p.ex. de cylindres, de cubes ou utilisant la GSC [géométrie solide constructive]

Abrégé

222222 gas may be achieved.

Classes IPC  ?

• E21F 17/16 - Modification des passages ou chambres des mines pour le stockage, spécialement de liquides ou de gaz

Abrégé

A control method for composite metal ions in a solid waste landfill, relating to the field of metal pollution treatment in solid waste landfills. Permeable adsorption walls capable of adsorbing harmful substances in leachate are built around a solid waste landfill. If the solid waste landfill is arranged against a mountain, there is only a need to build a permeable adsorption wall on the outer side surface of the solid waste landfill not surrounded by the mountain, and if groundwater exists beneath the solid waste landfill, the built permeable adsorption wall needs to extend underground to an underground aquiclude so as to prevent leachate in the solid waste landfill from flowing out along with the groundwater. The permeable adsorption wall sequentially consists of an inherent soil layer, an inherent soil layer and attapulgite mixed layer, an inherent soil layer and attapulgite @ manganese dioxide mixed layer, an inherent soil layer and attapulgite @ copper sulfide mixed layer, and an inherent soil layer.

Classes IPC  ?

• B01J 20/12 - Argiles d'origine naturelle ou terres décolorantes
• B01J 20/30 - Procédés de préparation, de régénération ou de réactivation
• C02F 1/28 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par absorption ou adsorption
• C02F 101/20 - Métaux lourds ou leurs composés
• C02F 103/06 - Eau souterraine contaminée ou eau de lessivage

Abrégé

A method for extracting and recovering gold from an aqueous solution, the method comprising the following steps: (1) extracting gold from a water body by means of electric flocculation, wherein by using an electrolytic cell, gold in an aqueous solution is captured by means of a hydroxide of iron, which is generated in situ by means of an electric flocculation reaction, and is reduced in situ into gold nanoparticles; (2) pickling and dissolving the precipitated iron sludge, wherein the obtained precipitate is dissolved in nitric acid, and after a washing treatment, iron flocs dissolve; and (3) separating and recovering gold by means of a nanofiltration membrane system, wherein the pickled solution of the obtained precipitated iron sludge is subjected to an interception treatment by using a nanofiltration membrane, so as to separate the solution and a nanogold elementary substance, and the latter is washed with water to obtain a gold elementary substance. The extraction and recovery method has the characteristics of a high gold extraction efficiency, a low cost, a simple technological process, high stability and being environmentally friendly; in addition, the method can achieve high-grade recovery of a gold elementary substance, and has relatively strong technical guidance and practical engineering application significance for extraction and recovery of gold during various gold smelting and extraction processes.

Classes IPC  ?

• C22B 11/00 - Obtention des métaux nobles
• C25B 1/50 - Procédés
• C01D 1/32 - Purification; Séparation par adsorption ou précipitation

Abrégé

A boring machine structure achieving front support, and a working method, aiming at providing a boring machine structure which achieves front support and is more compact. A front shield (3) is provided behind a cutterhead (1), and is in the shape of a truncated pyramid; a protective net assembly mechanism is provided outside the front shield; an outer shield (7) is provided behind the protective net assembly mechanism; the structure of the cutterhead (1) is internally provided with a rock slag leading-out channel (2), which is connected to a feeding end of a rock slag conveying mechanism (4); a protective housing (6) is sleeved outside the rock slag conveying mechanism (4); and supporting shoes (8) and a support assembly conveying platform (9) are provided behind the outer shield (7) and on the protective housing (6).

Classes IPC  ?

• E21D 9/06 - Exécution en utilisant un bouclier de percement
• E21D 9/087 - Exécution en utilisant un bouclier de percement avec des moyens complémentaires de foration ou d'incision avec une tête de forage de type rotatif coupant simultanément toute la section transversale, c. à d. tunneliers pleine-face
• E21D 9/04 - Creusement de galeries en terrain de faible consistance; Dispositifs à cet effet non prévus ailleurs
• E21D 9/12 - Dispositifs pour enlever ou transporter les matières d'excavation ou déblais; Plates-formes de travail ou de chargement
• E21D 11/20 - Profils particuliers, p.ex. ondulés
• E21D 11/40 - Dispositifs ou appareils pour la manutention ou le placement des unités de revêtement des tunnels ou des galeries

Abrégé

The present application relates to the technical field of metal-based composite materials. Disclosed are a high-entropy alloy-based nano super-hard composite material reinforced by embedded particles, and a preparation method therefor. Reinforcing-phase particles and a high-entropy alloy matrix in the composite material have good wettability and have good interface bonding, such that the wear resistance of the composite material can be improved, and the shedding of reinforcing-phase particles during friction can be effectively avoided. The composite material comprises a high-entropy alloy matrix and reinforcing-phase particles, wherein the reinforcing-phase particles are dispersed in the high-entropy alloy matrix; the high-entropy alloy matrix comprises a basic matrix and a reinforcing matrix, the basic matrix comprising Al, Co, Cr, Fe, Ni and Mn, and the reinforcing matrix comprising Mo, Nb and Zr; and the reinforcing-phase particles comprise WC and TiC.

Classes IPC  ?

• C22C 32/00 - Alliages non ferreux contenant entre 5 et 50% en poids d'oxydes, de carbures, de borures, de nitrures, de siliciures ou d'autres composés métalliques, p.ex. oxynitrures, sulfures, qu'ils soient soient ajoutés comme tels ou formés in situ
• B22F 3/105 - Frittage seul en utilisant un courant électrique, un rayonnement laser ou un plasma
• B22F 9/04 - Fabrication des poudres métalliques ou de leurs suspensions; Appareils ou dispositifs spécialement adaptés à cet effet par des procédés physiques à partir d'un matériau solide, p.ex. par broyage, meulage ou écrasement à la meule
• B82Y 30/00 - Nanotechnologie pour matériaux ou science des surfaces, p.ex. nanocomposites
• B82Y 40/00 - Fabrication ou traitement des nanostructures
• C22C 1/10 - Alliages contenant des composants non métalliques

Abrégé

Disclosed in the present invention is a hoisting wire rope tension measurement method based on visual vibration frequency identification, the method comprising: processing an operation vibration image of a hoisting wire rope collected by an orthographic binocular camera, and, according to a vibration inherent frequency of the hoisting wire rope, calculating the tension borne thereby, thus completing real-time measurement of the tension of the hoisting wire rope. The present invention improves the anti-interference performance of an algorithm by means of oblique rectangle fitting, and increases the measurement precision of the algorithm by means of an absolute mean value data defective point cleaning method based on difference theory, thereby achieving a good measurement effect.

Classes IPC  ?

• G06T 7/00 - Analyse d'image

Abrégé

Disclosed are a mine underground fracturing and proppant injection integrated apparatus and a construction method. The apparatus comprises a fracturing system and a proppant injection system. The apparatus can implement fracturing and sand-injection methods, such as high-pressure fracturing and continuous sand injection, high-pressure fracturing and pulsed sand injection, high-pressure fracturing and multi-particle-diameter/multi-type sand injection, pulsed fracturing and continuous sand injection, pulsed fracturing and pulsed sand injection, and pulse fracturing and multi-particle-diameter/multi-type sand injection, which can meet multiple mine underground requirements for fracturing and sand-injection manners. Therefore, the apparatus is universal.

Classes IPC  ?

• E21B 43/267 - Maintien de fractures par étaiement

Abrégé

The present invention belongs to the field of electric motor designs. Disclosed are an axial magnetic flux switch reluctance electric motor with a full-pitch winding, and a multi-objective optimization method therefor. The axial magnetic flux switch reluctance electric motor comprises a rotating shaft, wherein an electric motor iron core is arranged on the rotating shaft; the electric motor iron core comprises a left stator, a rotor and a right stator, which are sequentially arranged and are of annular structures; the rotating shaft is connected, by means of bearings, to end covers, on which the left stator and the right stator are fixedly mounted; the left stator and the right stator are respectively arranged in the end covers, which are located on two sides of the rotor; and housings for sealing are provided on outer edges of the end covers, on which the left stator and the right stator are mounted. The axial magnetic flux switch reluctance electric motor has a small axial length, a short magnetic flux path, a high energy conversion rate and a high torque density; the axial magnetic flux switch reluctance electric motor has a higher rated power for the same volume; and both the power density and the torque density are increased. Moreover, the axial magnetic flux switch reluctance electric motor has the advantages of realizing a large output, having a simple structure, being easily maintained, having a high reliability, etc., and therefore the axial magnetic flux switch reluctance electric motor has good engineering application value.

Classes IPC  ?

• H02K 16/04 - Machines avec un rotor et deux stators
• H02K 1/16 - Noyaux statoriques à encoches pour enroulements
• H02K 1/2796 - Rotors faisant face axialement à des stators le rotor étant formé de plusieurs aimants disposés sur la circonférence dans lesquels les deux faces axiales du rotor font face à un stator
• H02K 3/28 - Schémas d'enroulements ou de connexions entre enroulements

Abrégé

Disclosed is a tunnel boring robot, comprising a frame, a movement platform (10), a supporting and stabilizing mechanism (13), a milling mechanism (1), a telescopic mechanism, an oblique feeding adjusting mechanism (2), a horizontal swinging mechanism (6), a lifting mechanism and a controller (23). The milling mechanism (1) comprises: a driving unit, a milling shaft (1-3), an eccentric rotary sleeve (1-12), a high-pressure jet nozzle unit, a tension and pressure sensor (20) and a direction sensor (19). A center line of an inner hole of the eccentric rotary sleeve deviates, such that the milling mechanism drives a milling cutter head to perform a rotary oscillation motion for rock-breaking with little resistance, and an axial and a radial exciting force are generated at the same time, thus fully utilizing the non-tensile characteristic of coal rock, and achieving a high rock-breaking efficiency. The milling cutter head is in discontinuous contact with a rock mass, such that the milling cutter head has a short contact path, is less abraded and has a low temperature, and the milling cutter head is prevented from being excessively abraded. The telescopic mechanism, the oblique feeding adjusting mechanism, the lifting mechanism and the horizontal swinging mechanism are controlled, such that the milling mechanism mills coal rock according to a predetermined path, thereby automatically and efficiently milling the rock mass. Further disclosed is an automatic cutting control method including the robot.

Classes IPC  ?

• E21D 9/10 - Exécution en utilisant des machines à forer ou à inciser

Abrégé

An online soft measurement method for clean coal ash content during a lump coal shallow trough sorting process, relating to the technical field of coal sorting and processing, and solving the problem that an existing clean coal ash content prediction method during a lump coal shallow trough sorting process is complex and has poor adaptability and high cost. The method comprises: collecting data in real time, the data comprising clean coal production, tail coal production, qualified medium density and a clean coal dual-energy X-ray image; inputting an R value of each pixel point in the clean coal dual-energy X-ray image collected in real time into a trained clean coal ash content prediction main model to be processed, so as to obtain a clean coal ash content prediction value; processing the clean coal production and the tail coal production which are collected in real time to obtain clean coal yield; inputting the clean coal yield and the normalized qualified medium density into a trained clean coal ash content compensation model to be processed, so as to obtain a clean coal ash content error prediction value; and compensating the clean coal ash content prediction value with the clean coal ash content error prediction value, so as to obtain a final clean coal ash content prediction result.

Classes IPC  ?

• G06V 10/774 - Dispositions pour la reconnaissance ou la compréhension d’images ou de vidéos utilisant la reconnaissance de formes ou l’apprentissage automatique utilisant l’intégration et la réduction de données, p.ex. analyse en composantes principales [PCA] ou analyse en composantes indépendantes [ ICA] ou cartes auto-organisatrices [SOM]; Séparation aveugle de source méthodes de Bootstrap, p.ex. "bagging” ou “boosting”

Abrégé

The present invention relates to the field of switched reluctance motors. Disclosed are a winding switching type switched reluctance motor power circuit and a control method therefor. The circuit comprises a power converter for implementing free switching of a motor between a winding series mode and a winding parallel mode, a substantially asymmetric half-bridge circuit, and a winding mode switching circuit; the asymmetric half-bridge circuit controls the normal operation of the motor, the control method uses a double closed-loop, an outer loop is a rotating speed loop, and an inner loop is a current loop or a turn-on angle loop; the winding mode switching circuit controls the mode switching of the motor; and a current sensor is used for collecting a winding phase current, a current output torque value is obtained by combining the winding phase current and a rotor position signal measured by a position sensor, a working mode of the motor is determined by means of the actual rotating speed and torque, and a suitable winding mode switching circuit control signal is obtained. A required winding connection mode can be reasonably provided, the free switching of the motor between different modes is implemented, a rotating speed range of the motor is widened, and high-efficiency operation of the switched reluctance motor in the wide rotating speed range is implemented.

Classes IPC  ?

• H02P 6/08 - Dispositions pour commander la vitesse ou le couple d'un seul moteur

Abrégé

The present invention relates to the technical field of mineral sorting, relates to a whole size-fraction sorting pre-enrichment system and process for coal-series co-associated mineral gallium lithium, and solves the problem of low sorting efficiency of coal-series co-associated mineral gallium lithium in the prior art. The present invention comprises a feeding grading preparation unit, an X-ray efficient sorting unit, and a micro-bubble flotation unit; the X-ray efficient sorting unit and the micro-bubble flotation unit are provided on the downstream of the feeding grading preparation unit, and the feeding grading unit is used for grading strategic metal gallium lithium-rich coal series; oversize products are fed into the X-ray efficient sorting unit to be sorted, and undersize products are fed into the micro-bubble flotation unit to be sorted. According to the present invention, the coal-series co-associated mineral gallium lithium can be efficiently sorted.

Classes IPC  ?

• B03B 7/00 - Combinaisons de procédés ou d'appareils opérant par voie humide, avec d'autres procédés ou appareils, p.ex. pour la préparation des minerais ou cendres
• B03B 9/00 - Disposition générale d'un atelier de séparation, p.ex. schéma opératoire
• B03D 1/02 - Procédés de flottation par formation d'écume
• B07C 5/34 - Tri en fonction d'autres propriétés particulières

Abrégé

A variable-range valve leakage detection device comprises a leakage detection pipeline (6), the leakage detection pipeline (6) comprising an expandable section (24), a variable-diameter pipeline (23), an outer wall portion and a supporting pipeline (19). The expandable section (24) comprises a flexible cloth (242) and a movable metal plate (241). The metal plate (241) is wrapped inside the flexible cloth (242) to ensure that a gas entering the variable-diameter pipeline (23) is not leaked. The variable-diameter pipeline (23) comprises an upper support (32), a lower support (33) and a movable blade (34). A round pin protrudes from the upper support (32) plate to drive the movable blade (34) to move. The lower support (33) plate is provided with a square groove to enable the movable blade (34) to rotate around the lower support (33) plate. The same detection device can detect leakages having variable leakage amounts and containing different gases. When the leaked medium has a lower flow amount and flow rate than the lower limit detectable by a measurement instrument, it is difficult for metering devices such as anemometers to detect the leaked medium. According to the present invention, the flow area is reduced to increase the flow rate, thereby measuring tiny amounts of leakages accurately.

Classes IPC  ?

• G01M 3/28 - Examen de l'étanchéité des structures ou ouvrages vis-à-vis d'un fluide par utilisation d'un fluide ou en faisant le vide par mesure du taux de perte ou de gain d'un fluide, p.ex. avec des dispositifs réagissant à la pression, avec des indicateurs de débit pour soupapes

Abrégé

The present invention relates to the technical field of switched reluctance motors, and disclosed are an axial flux switched reluctance motor having wide and narrow stator poles, and a control method therefor. The axial flux switched reluctance motor having wide and narrow stator poles has a double stator disc and single rotor disc structure, and stator teeth at two sides are opposingly installed at two sides of the rotor disc; said motor comprises a left stator, a right stator, and a rotor; the left stator and the right stator teeth are opposingly placed at two sides of the rotor, and an air gap is left in the middle; the left stator and the right stator are salient pole structures with wide poles and narrow poles in a staggered arrangement; concentrated windings are wound on wide poles of the left stator and the right stator; and winding coils in stator slots of the left stator and the right stator at a same position have opposite polarities. Due to only one phase winding coil being placed in each stator slot and the rotor utilizing a segmented rotor structure, an excitation magnetic flux forms a short magnetic flux path between a wide stator pole and an adjacent narrow stator pole, same has a short axial length, the magnetic flux path is short, same operates reliably, has a high power density, and has a wide range of rotating speeds.

Classes IPC  ?

• H02K 29/03 - Moteurs ou génératrices à dispositifs de commutation non mécaniques, p.ex. tubes à décharge ou dispositifs à semi-conducteurs avec un circuit magnétique spécialement adapté pour éviter des ondulations du couple ou des problèmes de démarrage autonome
• H02K 1/12 - Parties fixes du circuit magnétique
• H02K 3/46 - Fixation des enroulements sur la structure statorique ou rotorique

Abrégé

Provided is a full-particle fraction sorting and pre-enrichment process for coal-based co-associated mineral germanium, the process comprising the steps of: S1: feeding and grading preparation; S2: X-ray sorting, which involving: feeding the oversize materials into an X-ray efficient sorting unit (2) for sorting; S3: micro-bubble flotation, which involving: feeding the undersize materials into a micro-bubble flotation unit for sorting, which involving: S3.1: passing the undersize materials through a crusher (7) and an ore grinding machine (8) in sequence to achieve sufficient dissociation; S3.2: grading the ore-ground product by means of a hydraulic grading cyclone (9), feeding the overflow product into the micro-bubble flotation and separation unit for sorting, and returning the underflow product to the ore grinding machine (8) for re-grinding; S3.3: feeding the overflow product of the hydraulic grading cyclone (9) and a reagent into a forced stirring mineralization device (12) for stirring and mineralization; S3.4: roughing the stirred and mineralized mixture by means of a flotation machine (13); and S3.5: selecting the overflow product from the flotation machine (13) by means of a flotation column (16), such that the coal-based co-associated mineral germanium can be efficiently sorted.

Classes IPC  ?

• B03B 7/00 - Combinaisons de procédés ou d'appareils opérant par voie humide, avec d'autres procédés ou appareils, p.ex. pour la préparation des minerais ou cendres
• B03B 9/00 - Disposition générale d'un atelier de séparation, p.ex. schéma opératoire
• B03D 1/02 - Procédés de flottation par formation d'écume
• B03D 1/14 - Machines de flottation
• B07C 5/34 - Tri en fonction d'autres propriétés particulières
• B07C 5/36 - Appareils trieurs caractérisés par les moyens qu'ils utilisent en vue de la distribution
• B04C 9/00 - Combinaisons avec d'autres dispositifs, p.ex. avec des ventilateurs
• B02C 21/00 - Installations de désagrégation avec ou sans séchage des matériaux
• B03D 103/08 - Minerais non sulfurés carbonifères

Abrégé

Disclosed in the present invention is a timing and positioning network system for a coal mine underground chain-shaped large space. On the basis of ad-hoc network base stations that are linearly deployed inside a coal mine underground chain-shaped large space, the timing and positioning network system in which the ad-hoc network base stations have a unified internal time reference is constructed by using a base station-level network internal time synchronization method that is mainly based on optical fiber timing and is supplemented by satellite timing. By means of network construction, network stabilization and network application, time references in a base station-level network are unified by using the base station-level network internal time synchronization method, thus improving the positioning precision during network application; in addition, the timing and positioning network system adapting to a coal mine underground environment is integrated on the basis of an existing underground communication ring network, which extends the network applicability.

Classes IPC  ?

• H04W 56/00 - Dispositions de synchronisation
• H04W 64/00 - Localisation d'utilisateurs ou de terminaux pour la gestion du réseau, p.ex. gestion de la mobilité

Abrégé

Disclosed are a multipoint synchronous braking control system for a monorail crane, and a use method therefor. The control system comprises a touch detection unit (1), a common end roller unit (2), a hydraulic unit (3), a synchronous control unit (4) and a connecting cable (5), wherein the touch detection unit (1) is mounted on a brake shoe (7) of the monorail crane, the common end roller unit (2) is mounted on a traveling rail and is connected to a rack (8) of the monorail crane, the touch detection unit (1) comprises a cylinder (101) connected to the brake shoe (7), a metal probe (102) corresponding to the traveling rail is arranged in cylinder (101), a circular boss is formed on the metal probe (102), a limit bolt (108) corresponding to the circular boss is formed on an inner side wall of the cylinder (101), the metal probe (102) can make contact with the traveling rail or the limit bolt (8) during braking of the brake shoe (7), and the brake shoe (7) is connected to the hydraulic unit (3) by means of a brake arm (6); and the metal probe (102), the limit bolt (108), the hydraulic unit (3) and the common end roller unit (2) are electrically connected to the synchronous control unit (4) by means of the connecting cable (5). The problem that a monorail crane cannot achieve multipoint synchronous braking control can be effectively solved by detecting the idle time of each brake in real time and delaying a control command of each brake during the next braking.

Classes IPC  ?

• F16D 63/00 - Freins non prévus ailleurs; Freins combinant plusieurs des types mentionnés dans les groupes
• F16D 66/02 - Appareils indicateurs d'usure
• B61H 7/12 - Mâchoires agissant par frottement sur la voie

Abrégé

A monorail crane brake shoe lost motion time detection device and a detection method thereof. The detection device comprises a contact detection unit (1), a common end roller unit (2), a lost motion time detection unit (3) and a detection line (4). The contact detection unit (1) is mounted on a brake (5) of a monorail crane; the common end roller unit (2) is mounted on a frame (8) of the monorail crane and corresponds to a driving rail (7); the contact detection unit (1) comprises a barrel (101) connected to the brake (5); a metal probe (102) corresponding to the driving rail (7) is provided in the barrel (101); a protruding cylindrical block is formed on the metal probe (102); a limiting bolt (108) corresponding to the protruding cylindrical block is formed on the inner side wall of the barrel (101); the metal probe (102) comes into contact with the driving rail (7) or the limiting bolt (108) when the brake (5) implements braking; the lost motion time detection unit (3) is electrically connected to the metal probe (102), the limiting bolt (108) and an axle (202) of the common end roller unit (2) by means of the detection line (4). The device can solve the problems of large measurement error, low adaptability and easy interference in a conventional method.

Classes IPC  ?

• B60T 17/22 - Dispositifs pour surveiller ou vérifier les systèmes de freins; Dispositifs de signalisation
• B61H 7/00 - Freins comportant des éléments de freinage agissant sur la voie

Abrégé

The present invention belongs to the technical field of mine construction and engineering. Disclosed are a single-layer well wall having a jointed water-stop structure and a grouting system, and a construction method therefor. Joints are formed at the contact position of an upper well wall and a lower well wall. A water-stop plate and a filling layer are arranged on the outer side of the joint, and the water-stop plate and the filling layer jointly form the water-stop structure of a single-layer well wall. The single-layer well wall provided by the invention has good overall water sealing performance, construction is convenient, the manufacturing cost is far lower than that of a double-layer well wall and a double-layer composite well wall, the single-layer well wall is suitable for a shaft dug by a freezing method, and the single-layer well wall is also suitable for a shaft dug by a common method or a grouting method.

Classes IPC  ?

• E21D 5/11 - Revêtement des puits; Revêtements à cet effet avec combinaisons de différents matériaux, p.ex. bois, métal, béton

Abrégé

A high-precision positioning system and positioning method for a coal-mine underground monorail crane. The system comprises two wheel carriers, which are symmetrically arranged on two sides of an I-beam track (1). A positioning wheel (4) and several traveling wheels (2) are provided on the wheel carriers, the traveling wheels (2) traveling on an upper end surface of a bottom plate of the I-beam track (1), and the positioning wheel (4) being in meshing transmission with a toothed rack (19) at a lower end of the bottom plate of the I-beam track (1). A mounting frame (18) and a connection base (9), which is used for connecting a monorail crane, are provided on the wheel carriers, and an inertial measurement unit (13) and a single-chip microcomputer (12), which are electrically connected to each other, are provided on the mounting frame (18). A rotation angle sensor (7) is provided on the positioning wheel (4), and the rotation angle sensor (7) is electrically connected to the single-chip microcomputer (12). Crane heads at two ends of the monorail crane are each provided with a coordinate updating unit (24). The high-precision positioning of the monorail crane is implemented by means of achieving the high-precision meshing between the positioning wheel (4) and the toothed rack (19) on the I-beam track (1) and then calculating the displacement of the positioning wheel (4).

Classes IPC  ?

• B66C 13/46 - Indicateurs de position pour charges suspendues ou pour éléments de grues
• G01C 21/16 - Navigation; Instruments de navigation non prévus dans les groupes en utilisant des mesures de la vitesse ou de l'accélération exécutées à bord de l'objet navigant; Navigation à l'estime en intégrant l'accélération ou la vitesse, c. à d. navigation par inertie

Abrégé

Disclosed in the present invention are an electromagnetic probe transmitter system suitable for a deep earth probe, and a control method therefor. A power frequency rectification module in the system rectifies an alternating current, which is generated by a generator, into a direct current. A series coordination control module controls a series high-frequency DCDC module, converts the direct current obtained by means of rectification to follow a given reference value voltage, and suppresses a voltage fluctuation together with a capacitor energy storage module and a dummy load module. A cooperative transmitting module obtains GPS/Beidou timing from a timing module, and controls a switching operation of the dummy load module and a three-level transmitting module at an instruction moment. The three-level transmitting module eliminates a step time of a traditional multi-level transmitting circuit and improves a dynamic response speed, and the series coordination control module, the capacitor energy storage module, the dummy load module and the cooperative transmitting module operate collectively, such that a transient fluctuation of a transmission voltage is reduced, and the frequency of a transmission waveform is improved.

Classes IPC  ?

• G01V 3/08 - Prospection ou détection électrique ou magnétique; Mesure des caractéristiques du champ magnétique de la terre, p.ex. de la déclinaison ou de la déviation fonctionnant au moyen de champs magnétiques ou électriques produits ou modifiés par les objets ou les structures géologiques, ou par les dispositifs de détection
• H02M 3/335 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu avec transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrodes de commande pour produire le courant alternatif intermédiaire utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs
• H02M 7/06 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge sans électrode de commande ou des dispositifs à semi-conducteurs sans éléctrode de commande
• H02M 7/487 - Onduleurs bloqués au point neutre

Abrégé

A method for determining mercury and arsenic in briquettes based on atomic fluorescence spectrometry and digestion of briquettes using a hydrothermal synthesis reactor, comprising: adding a certain amount of briquettes and a proper amount of mixed acid into a polytetrafluoroethylene sealed tank, which has been subjected to soaking, cleaning and preheating, for pre-digestion until a gas is released, after the reaction eases, capping, placing the polytetrafluoroethylene sealed tank into a stainless steel sleeve for sealing, placing the stainless steel sleeve into an electrothermal blast drying oven for closed heating digestion, and then performing acid removal and volume fixing operations to obtain a digestion solution to be tested; and preparing a standard series of solutions of mercury and arsenic elements, drawing a standard curve, then using an atomic fluorescence spectrometer to test the obtained digestion solution to be tested to obtain a fluorescence intensity, and performing conversion by means of the standard curve to obtain the content of corresponding elements in the briquettes.

Classes IPC  ?

• G01N 21/64 - Fluorescence; Phosphorescence
• G01N 1/44 - Traitement d'échantillons mettant en œuvre un rayonnement, p.ex. de la chaleur

Abrégé

Disclosed in the present invention is a slope and curve passage method for an unmanned rail electric locomotive in a deep limited space. The method comprises: a rail electric locomotive traveling on an underground roadway at a constant speed, collecting road data during a traveling process in real time by means of a solid-state LIDAR, and feeding the road data back to an industrial control computer, so as to obtain an original three-dimensional point cloud data packet and imu data; then, obtaining ground point cloud data and non-ground point cloud data by means of segmentation using a RANSAC algorithm; according to the collected imu data, calculating the current pose of the solid-state LIDAR, so as to feed back whether the electric locomotive travels on a slope, and then obtain the lengths and positions of an upslope and a downslope, and the electric locomotive accelerating when going upslope and decelerating when going downslope, thereby ensuring that the electric locomotive travels normally at a constant speed; and determining whether there is a curve according to the shape of a wall of the roadway, and calculating the curvature of the curve and the position of the curve. Therefore, an unmanned rail electric locomotive can accurately identify an upslope, a downslope and a curve, thereby ensuring the smooth passage of the unmanned rail electric locomotive in a mine.

Classes IPC  ?

• G05D 1/02 - Commande de la position ou du cap par référence à un système à deux dimensions
• G01S 17/89 - Systèmes lidar, spécialement adaptés pour des applications spécifiques pour la cartographie ou l'imagerie

Abrégé

A separating density forecasting method and a forecasting model construction method and device. The forecasting model construction method comprises: performing fluidization operation on dense-medium particles in a fluidized bed to achieve bubbling fluidization; suspending, by means of a dynamometer, minerals to be separated in a dry dense-medium fluidized bed, the minerals to be separated being dense ores; collecting a resultant force borne by the minerals to be separated and the bed layer density; according to the resultant force borne by the minerals to be separated and the bed layer density, the granularity and the real density of the minerals to be separated, and the bulk density of the dense-medium particles, determining a function relationship between the volume of a fluidization dead zone above the minerals to be separated in the fluidized bed and the granularity of the minerals to be separated; and constructing a dry dense-medium fluidized bed separating density forecasting model on the basis of the function relationship.

Classes IPC  ?

• B07B 7/00 - Séparation sélective des matériaux solides portés par des courants de gaz, ou dispersés dans ceux-ci
• G06Q 10/04 - Prévision ou optimisation spécialement adaptées à des fins administratives ou de gestion, p. ex. programmation linéaire ou "problème d’optimisation des stocks"
• G06F 30/20 - Optimisation, vérification ou simulation de l’objet conçu
• G06Q 50/02 - Agriculture; Pêche; Exploitation minière

Abrégé

The present invention relates to a mine stress field twin modeling assimilation system for a full space-time mining process, and a method, and belongs to the technical field of digital twin assimilation inversion. The system comprises a digital model unit, a physical model unit and a human-computer interaction unit. The digital model unit is provided with an equal-proportion three-dimensional geological model, a mine historical assimilation model and a trusted digital twin model; the physical model unit covers a stratum and a mining face tunnel system, and the human-computer interaction unit has an information database and a software simulation monitoring interface. By means of a software establishment model, assimilation technology optimization model operation and a digital twin technology interconnection physical entity and virtual model, the present invention is able to construct a mine in-situ stress field twin model aimed at a full space-time mining process and better approximating reality, and is likewise able to use real physical scene monitoring data to perform simulated pre-mining in a virtual spatial model, aimed at grasping the space-time evolution laws of stress fields in the mining process, and providing guidance for safe mining production.

Classes IPC  ?

• G06T 17/05 - Modèles géographiques

Abrégé

The present invention belongs to the field of mine three-dimensional digital modeling, and disclosed is a mine digital model construction method based on a three-dimensional point cloud database. Mine data resources are collected, valid coordinate point position information is extracted according to point cloud data extraction standards, and a mine three-dimensional point cloud database is established; a model of rock strata boundary surfaces, mining areas, and tunnels is constructed, a surface three-dimensional geological model is constructed, and a mine three-dimensional geological model is further constructed; and division into grids is performed to obtain a mine extraction inversion digital model. According to the method, a mine three-dimensional point cloud database can be obtained, and various identified rock strata topographies, positions of mining areas and tunnels, fault morphologies, and surface morphologies can be restored; mine extraction inversion digital models having different precisions can be constructed according to a simulation requirement by utilizing the present method, a foundation is laid for crustal stress field inversion, and a reliable basis is provided for mine disaster prevention and control.

Classes IPC  ?

• G06T 17/20 - Description filaire, p.ex. polygonalisation ou tessellation

Abrégé

An ellipsoidal hollow floor system-based airflow flow construction method and an airflow loss-based calculation method. The airflow flow construction method comprises: an ellipsoidal hollow floor system-based smoke exhaust construction method for performing smoke exhaust, ventilation, air conditioning, and fire extinguishing of a hollow floor system. The airflow loss-based calculation method comprises: obtaining total loss for a football-shaped cavity and obtaining total airflow loss for a disk-shaped cavity. By using the floor system composed of ellipsoidal cavities, due to curved surface characteristics of inner walls of the cavities, compared to conventional cube-shaped cavities, the floor system composed of the ellipsoidal cavities has the advantages of small overall airflow flow energy loss, a good airflow flow effect, and small sudden contraction and sudden expansion energy losses, has a better effect than the conventional cube-shaped cavities when applied to the airflow flow of the hollow floor system, has certain fire-resistant properties compared to conventional open conduits, and has more economical and efficient applications with respect to indoor smoke exhaust, indoor ventilation, air conditioning, and fire extinguishing by introducing a fire extinguishing gas such as perfluorohexanone into the floor system.

Classes IPC  ?

• E04B 5/48 - Adaptations particulières des planchers pour l'incorporation de conduites, p.ex. pour chauffage ou ventilation
• F24F 13/02 - Dispositions pour conduire l'air
• F24F 7/06 - Ventilation avec réseau de gaines à circulation d'air forcée, p.ex. par un ventilateur
• A62C 35/58 - Réseaux de conduites
• G06F 30/13 - Conception architecturale, p.ex. conception architecturale assistée par ordinateur [CAAO] relative à la conception de bâtiments, de ponts, de paysages, d’usines ou de routes

Abrégé

The present application belongs to the technical field of transportations in mine tunnels, and relates to a low-power-consumption graded positioning method and system for a coal-mine auxiliary transportation vehicle. The method comprises: S10, determining an optimal transportation route for a vehicle, and dividing the optimal transportation route into a plurality of closed sections; S20, determining an initial speed v0 of the vehicle passing through each closed section; S30, establishing a discretized mileage estimation model, and updating, in real-time, the position of the vehicle, so as to obtain dynamic trajectory information of the vehicle within each closed section; S40, establishing a [v0, t] prediction model, and obtaining, by means of the prediction model, a theoretical time t0 of the vehicle passing through each closed section; S50, comparing the actual time t and theoretical time t0 of the vehicle passing through each closed section, and choosing whether to give an early-warning regarding expiration or raise an alarm regarding expiration; and S60, after the vehicle enters the next closed section, executing S30-S50 again The low-power-consumption graded positioning method and system for a coal mine auxiliary transportation vehicle in the present application realizes on-demand positioning of an underground vehicle, and reduces the power consumption and costs for positioning.

Classes IPC  ?

• E21F 13/00 - Transport spécialement adapté aux conditions du fond
• G06K 17/00 - Méthodes ou dispositions pour faire travailler en coopération des équipements couverts par plusieurs des groupes principaux , p.ex. fichiers automatiques de cartes incluant les opérations de transport et de lecture
• E21F 17/18 - Adaptations particulières des dispositifs de signalisation ou d'alarme

Abrégé

A series-parallel oil-electricity-hybrid monorail crane and a control method. The monorail crane comprises a cab (1), a hydraulic driving system, a hoisting beam (6), a toothed rail drive and an energy storage system, and an adaptive speed control system, which are sequentially connected in series and travel on a rail (7). According to different working conditions, comprising an upslope condition, a downslope condition and a loading condition, the monorail crane can realize separate driving of an electric motor or a diesel engine in an endurance mode, hybrid driving of the electric motor and the diesel engine in a transportation mode, and hybrid driving of the diesel engine and a flywheel energy storage system in a slope climbing mode, such that the power requirements of the monorail crane under each working condition are satisfied, and redundant energy is recycled during a traveling process, thereby achieving energy conservation and emission reduction.

Classes IPC  ?

• B61C 7/00 - Autres locomotives ou automotrices caractérisées par le type de puissance motrice utilisée; Locomotives ou automotrices avec plusieurs sortes ou types de puissance motrice
• B61C 13/06 - Locomotives ou automotrices caractérisées par leur utilisation dans des systèmes ou pour des buts particuliers pour chemins de fer à voies flexibles suspendues, p.ex. chemins de fer à câble
• B61C 17/00 - LOCOMOTIVES; AUTOMOTRICES - Détails ou accessoires non prévus ailleurs; Utilisation de mécanismes ou de systèmes de commande

Abrégé

An intelligent flotation chemicals loading system and method based on flotation tailing ore pulp detection, relating to the technical field of flotation chemicals loading, and for use in solving the problems in the prior art of untimely flotation chemicals loading and inaccurate dosage caused by manual adjustment. Provided is an intelligent flotation chemicals loading system based on flotation tailing ore pulp detection, comprising a flotation information collection unit, an intelligent ash content prediction unit, and a distributed control chemicals loading unit. The flotation information collection unit is used for obtaining flow, concentration, coarse particle content, and image information of ore pulp; the intelligent ash content prediction unit is used for processing the flow, concentration, coarse particle content, and image information of the ore pulp to obtain the ash content of the ore pulp; and the distributed control chemicals loading unit is used for regulating and controlling the chemicals loading amount according to the ash content of the ore pulp and the flow, concentration, and coarse particle content of the ore pulp. According to the intelligent chemicals loading system and method, flotation parameters can be continuously monitored in real time, and the chemicals loading amount can be adjusted in a timely manner.

Classes IPC  ?

• B03D 1/14 - Machines de flottation

Abrégé

The present invention relates to an intelligent flotation agent addition system based on flotation coal tailing slurry detection, and an agent addition method, which relate to the technical field of flotation agent addition, and solve the problems of untimeliness and inaccurate dosing related to the manual addition of flotation agents in the prior art. The present invention provides an intelligent flotation agent addition system based on flotation coal tail slurry detection, which comprises a flotation information acquisition unit, an intelligent ash content prediction unit and a distributed controlled agent addition unit. The flotation information acquisition unit acquires the flow, concentration, coarse particle content and image information of an ore slurry, the intelligent ash content prediction unit processes the flow, concentration, coarse particle content and image information of the ore slurry, and the distributed controlled agent addition unit regulates and controls the amount of agent addition according to the ash content of the ore slurry and the flow, concentration and coarse particle content of the ore slurry. The present invention enables real-time continuous monitoring of flotation parameters and timely adjustment of the amount of agent addition.

Classes IPC  ?

• B03D 1/14 - Machines de flottation

Abrégé

Disclosed in the present invention is a mining camera based on mirror surface intelligent partition and water-gas-ultrasonic composite dust removal, comprising a protective housing and a camera lens arranged in the protective housing, wherein a rotatable glass lens corresponding to the camera lens is arranged on the protective housing; a movable ultrasonic cleaning module for cleaning the cleaning region of the outer surface of the glass lens, a telescopic internal dust removing module for cleaning dust on the inner surface of the glass lens, and a gas ejection module for performing air drying and dust removal on the outer surface of the cleaned glass lens are arranged in the protective housing; and the ultrasonic cleaning module, the telescopic internal dust removing module, and the gas ejection module are electrically connected to a control apparatus. Therefore, dust can be well prevented from adhering to the lens, the situation that a small amount of dust adheres to the inner surface of the glass lens of the camera due to static electricity or other influences can be avoided, the mirror surface cleaning effect can be improved, and damage to the lens is reduced.

Classes IPC  ?

• B08B 5/02 - Nettoyage par la force de jets, p.ex. le soufflage de cavités
• B08B 3/12 - Nettoyage impliquant le contact avec un liquide avec traitement supplémentaire du liquide ou de l'objet en cours de nettoyage, p.ex. par la chaleur, par l'électricité ou par des vibrations par des vibrations soniques ou ultrasoniques
• B08B 1/04 - Nettoyage par des procédés impliquant l'utilisation d'outils, de brosses ou d'éléments analogues utilisant des éléments actifs rotatifs

Abrégé

An accurate positioning method based on multi-source information fusion and for a monorail crane in an underground coal mine. The method comprises the following steps: calculating a dynamic location of a moving vehicle according to a vehicle-mounted label of a UWB system and a base station (S100); performing matrix transformation according to an attitude matrix contrast force which is output by a strapdown inertial navigation system, so as to calculate a traveling distance of the vehicle (S200); determining location information of a feature point according to a full-scene map constructed by a map construction system (S300); and constructing, according to a monorail crane traveling displacement model and accurate location information of the feature point, a Kalman filtering model for accurate positioning, and correcting a monorail crane real-time location model, so as to obtain accurate location information (S700). Further provided is an accurate positioning system based on multi-source information fusion and for a monorail crane in an underground coal mine. By means of performing information fusion on three positioning modes, the accuracy is guaranteed while a relatively high stability and anti-interference performance can also be achieved, and the system is applicable to the positioning of a monorail crane in an underground environment.

Classes IPC  ?

• B61L 25/02 - Indication ou enregistrement de la position ou de l'identité de véhicules ou de trains

Abrégé

A method for screening molecular functional groups of a coal slime flotation collecting agent, relating to the field of flotation reagent design. Modified probes (14) having different flotation reagent molecular functional groups are prepared by means of deposition; then elastic deformation information generated in the process of feeding the modified probes (14) into a tested coal sample (9) is observed by means of an atomic force microscope (AFM), and probe feeding force information of the modified probes (14) in the probe feeding process is deduced according to the elastic deformation information; probe withdrawing force information corresponding to the modified probes (14) are collected to generate a probe withdrawing force curve; and probe withdrawing force curve values of all the modified probes (14) are compared, the larger the values are, the larger the adhesive force between the molecular functional groups of the flotation collecting agent on the modified probes (14) and the coal sample (9) is, and the larger the adhesive force is, the better the effect of the collecting agent deposited on the modified probes (14) is. The screening method is simple in steps, high in precision and intuitive, and the problems in the prior art that efficient collecting agent molecular functional groups are difficult to screen, a collecting agent regulation and control mechanism is not clear, etc. are solved.

Classes IPC  ?

• G01N 19/04 - Mesure de la force d'adhérence entre matériaux, p.ex. du ruban adhésif, d'un revêtement

Abrégé

Disclosed are a pulsed laser in-situ impact-assisted laser cladding apparatus and a use method. The apparatus comprises an electronic computer, the electronic computer controlling a laser cladding manufacturing module and a pulsed laser dimming module. The pulsed laser dimming module comprises a pulsed laser and a dimming frame; an optical fiber access port is provided on the outer wall of the dimming frame, the pulsed laser is connected to the optical fiber access port by means of a pulsed laser optical fiber provided, the optical fiber access port is equipped with a first reflector capable of performing reciprocating rotation, a first galvanometer and a second reflector are respectively provided on both sides of the first reflector, and a second galvanometer is provided on the other side, where the first galvanometer is located, of the second reflector. By providing the dimming frame, the technical problem that under a complex trajectory, pulsed laser cannot follow a machining action of continuous laser to constantly act on the rear of a molten pool is solved.

Classes IPC  ?

• C23C 24/10 - Revêtement à partir de poudres inorganiques en utilisant la chaleur ou une pression et la chaleur avec formation d'une phase liquide intermédiaire dans la couche
• C21D 10/00 - Modification des propriétés physiques autrement que par traitement thermique ou déformation

Abrégé

A pre-grouting treatment method for water hazards in shaft construction, the method mainly comprising the steps of: performing surveying and setting out to obtain the plane position and downhole position of a shaft; analyzing geological data of the shaft to determine a zone of a lower section of the shaft that needs a grouting treatment; constructing an annular surrounding roadway (1) in the lower section of the shaft; constructing grouting drill holes (2) upwards in the lower section of the shaft to perform a pre-grouting treatment on an aquifer; after the grouting treatment on the lower section of the shaft is completed, performing a filling treatment on the annular surrounding roadway (1); normally excavating the shaft downwards to penetrate the treated aquifer in the lower section; and finally completing the construction of the shaft. The method is suitable for operating conditions in which there has been a roadway around the bottom of a shaft, the shaft is at a great depth, and an aquifer is mainly located in a bottomhole section. By means of the method, the upper-section excavation and lower-section water hazard pre-treatment of a shaft can be performed synchronously and operated in parallel, thereby reducing the time consumed by conventional grouting-from-the surface and pre-grouting-from-the-working-face, and thus saving on the overall shaft construction time.

Classes IPC  ?

• E21D 5/04 - Revêtement des puits; Revêtements à cet effet avec des briques, du béton, des pierres ou matériaux de construction analogues
• E21F 16/00 - Drainage

Abrégé

A rockburst-oriented while-drilling deviation-correcting device for an anti-burst drilling robot. A deviation-correcting structure is provided between a drill bit and an auger. A drill bit connection rod (2) passes through the center of an electric control machine (15) to be connected to the auger, the drill bit connection rod (2) being coaxial with the electric control machine (15). A plurality of oil pumps (11) are evenly arranged along the circumference of the drill bit connection rod (2), the top of each oil pump (11) being connected to a corresponding oil cylinder (6) by means of an oil feeding pipe (8) and an oil discharge pipe (10), that is, each oil pump (11) being cooperated with the corresponding oil cylinder (6) to work independently. An oil cylinder piston (5) is connected to the interior of each oil cylinder (6), an offset block (1) being fixed at an end of each oil cylinder piston (5). The offset blocks (1) are in contact with a coal wall to apply reverse displacement and counter-acting force to the auger and the drill bit, and deflection force and deflection displacement of a drilling robot during a drilling process are counteracted according to different extension and retraction quantities of the oil cylinders (6), and therefore correction of deviation and torsion of an auger mechanism can be achieved.

Classes IPC  ?

• E21B 7/10 - Redressement des déviations du forage

Abrégé

A virtual reality high-simulation training system, comprising a simulation cabin (1). A frame plate (2) is arranged in the simulation cabin (1), and a seat (3) is fixedly installed on the frame plate (2). A motor (5) is fixedly installed on the frame plate (2), and a rotating rod (6) is fixedly installed on an output shaft of the motor (5). A first belt pulley (7) is fixedly installed on the rotating rod (6). A bearing box (15) is fixedly installed on the seat (3), a second belt pulley (8) is rotatably installed in the bearing box (15), and a same first belt (9) is transmissively installed on the first belt pulley (7) and on the second belt pulley (8). The interior of the simulation cabin (1) is provided with a fixing mechanism, a pushing mechanism, and an adjustment mechanism. The degree of comfort is improved, the immersion effect is better, training time can be lengthened for trainees, the training effect is improved, the usage is simple, and operation is convenient.

Classes IPC  ?

• G09B 9/00 - Simulateurs pour l'enseignement ou l'entraînement

Abrégé

A drivable area detection and autonomous obstacle avoidance method for an unmanned transportation device for deep, confined spaces comprises: acquiring three-dimensional point cloud data of a tunnel; calculating a two-dimensional image drivable area of a coal mine tunnel; acquiring a three-dimensional point cloud drivable area of the coal mine tunnel; establishing a two-dimensional grid map and a hazard map, and using an improved particle swarm path planning method designed for deep mine confined tunnels to carry out autonomous obstacle avoidance path planning; using a greedy strategy to acquire an optimal candidate end point of the driving path, and causing an unmanned auxiliary transportation vehicle to travel on the basis of the optimal end point and an optimal driving path. By means of a single camera sensor device, an image of a coal mine tunnel is actively acquired, allowing for stable, accurate and rapid calculation of a drivable area of the three-dimensional space of a deep, underground space for an auxiliary transportation vehicle, and allows for autonomous obstacle avoidance driving of an unmanned auxiliary transportation vehicle in deep mine confined tunnels on the basis of drivable area detection and safety evaluation information, which is significant for automatic driving technology for coal mine auxiliary transportation vehicles.

Classes IPC  ?

• G06V 20/58 - Reconnaissance d’objets en mouvement ou d’obstacles, p.ex. véhicules ou piétons; Reconnaissance des objets de la circulation, p.ex. signalisation routière, feux de signalisation ou routes
• G06V 10/26 - Segmentation de formes dans le champ d’image; Découpage ou fusion d’éléments d’image visant à établir la région de motif, p.ex. techniques de regroupement; Détection d’occlusion

Abrégé

A coal mine auxiliary transportation vehicle positioning method, relating to the technical field of vehicle transportation positioning. The method comprises the following steps: first, acquiring a rotating speed of each wheel and a steering angle of a steering wheel, respectively constructing a kinematics model based on non-turning wheels of a vehicle and a kinematics model based on turning wheels of the vehicle, and constructing a vehicle geometric center-based kinematics model according to the kinematics model based on the non-turning wheels of the vehicle and the kinematics model based on the turning wheels of the vehicle; and second, according to a travelling status of the vehicle, a, when the vehicle is in a normal travelling state, performing positioning using a combination of the vehicle geometric center-based kinematics model and a strapdown inertial navigation system (1); and b, when the vehicle is in an abnormal travelling state, performing combined positioning using the kinematics model based on the non-turning wheels of the vehicle and the strapdown inertial navigation system (1). The influence of the abnormal state on the positioning precision can be maximized, the positioning precision is improved, the compatibility is high, the precision is high, the method is simple, easy to implement, convenient, and reliable. Also provided is a coal mine auxiliary transportation vehicle positioning system.

Classes IPC  ?

• B61L 25/02 - Indication ou enregistrement de la position ou de l'identité de véhicules ou de trains
• G01S 19/00 - Systèmes de positionnement par satellite à radiophares; Détermination de position, de vitesse ou d'attitude au moyen de signaux émis par ces systèmes

Abrégé

Disclosed in the present invention are a capsule slow-release collector for coal flotation, and a preparation method therefor and an application thereof. Components of the collector comprise a collecting agent, a functional agent, and an emulsifier; components of the collecting agent comprise diesel oil, pine oil, and an oleic acid-based ester; the functional agent is prepared by mixing a sodium silicate solution and a sulfuric acid solution in proportion; the emulsifier is a nonionic surfactant. Compared with a conventional collector, the capsule slow-release collector in the present invention has a special capsule structure and has double functions of collection and selective inhibition; when the collector capsule shell interacts with hydrophobic sites of coal molecules, the original capsule structure collapses, and the inhibitor component in the capsule core is released; when the collector does not interact with coal molecules, the inhibitor is temporarily stored in the collector. Slow release of the inhibitor avoids excessive consumption in a short time, the problem that the inhibitory effect becomes poor as the concentration of the inhibitor decreases is alleviated, the capsule slow-release collector achieves higher selectivity and has a wide application prospect.

Classes IPC  ?

• B03D 1/018 - Mélanges de composés inorganiques et organiques
• B03D 101/02 - Agents collecteurs

Abrégé

An automatic cutting method with reduced sensors and no teaching for a shearer in an intelligent fully-mechanized mining face, comprising: initializing an automatic cutting parameter configuration data table according to three-dimensional modeling data of a coal mine coal seam of an intelligent fully-mechanized mining face; and in a process of performing automatic cutting according to the automatic cutting parameter configuration data table, automatically extracting, by means of a shearer in the fully-mechanized mining face, data such as the position, direction, speed, and cutting drum height of the shearer in a coal cutting process, and cleaning up redundant data in a process of cutting by one cut. The method implements automatic cutting technology of the shearer in the fully-mechanized mining face without teaching is achieved, and improves the intelligent running effect of drum shearers. Also provided is an automatic cutting system with reduced sensors and no teaching for a shearer in an intelligent fully-mechanized mining face.

Classes IPC  ?

• E21C 35/00 - EXPLOITATION DES MINES OU CARRIÈRES - Détails ou accessoires de machines pratiquant des saignées ou libérant complètement la matière minérale de la veine, non prévus dans les groupes , ou
• E21C 35/24 - Télécommande spécialement adaptée aux machines pratiquant des saignées ou libérant complètement la matière minérale
• E21C 41/16 - Procédés d'exploitation minière souterraine; Tracés à cet effet

Abrégé

A constant-pressure experiment based device and method for measuring a valve leakage of a pressure balance valve. The device comprises a valve to be subjected to measurement (1), a gas storage tank (2), a mass block working pipeline (9), a mass block (10), a stop valve (15) and a gas compressor (16), wherein a gas flow inlet of the valve to be subjected to measurement (1) is connected to the gas storage tank (2) by means of a gas conveying pipeline (19); the gas compressor (16) is connected to the gas storage tank (2) by means of the gas conveying pipeline (19); the other gas flow outlet of the gas storage tank (2) is connected to a gas flow inlet of the gas conveying pipeline (19) and is fixed by means of bolts; a gas flow outlet of the gas conveying pipeline (19) is connected to the mass block working pipeline (9); the mass block (10) is in gastight connection with the mass block working pipeline (9); and the mass block (10) can freely move in the mass block working pipeline (9) according to the magnitude of gas pressure in the mass block working pipeline (9). Leakages of a valve under different standard measurement pressures can be measured; the weight of the mass block (10) can be further reduced; a measurement problem occurring when there is a micro leakage in the valve is solved, thereby solving the problem of low precision of leakage measurement; and the application range is wide.

Classes IPC  ?

• G01M 3/28 - Examen de l'étanchéité des structures ou ouvrages vis-à-vis d'un fluide par utilisation d'un fluide ou en faisant le vide par mesure du taux de perte ou de gain d'un fluide, p.ex. avec des dispositifs réagissant à la pression, avec des indicateurs de débit pour soupapes

Abrégé

A well wall pressure corrosion test system, comprising a pressure bearing device, a confining pressure application device, and a seepage water pressure application device, wherein the confining pressure application device and the seepage water pressure application device provide confining pressure and seepage water pressure for the pressure bearing device, respectively, and keep the confining pressure and the seepage water pressure constant on the pressure bearing device. An axial pressure is applied to a piston (10) by means of a hydraulic jack (9) and is then transferred to a sample (14) to complete axial pressure application. The confining pressure is applied to hydraulic oil by a manual pump (35) in combination with a first energy accumulator (40) and then transferred to the sample (14) to complete confining pressure application. The seepage water pressure is applied to a corrosion solution by a water pump group (23) in combination with a second energy accumulator (30) and then transferred to the sample (14) to complete seepage water pressure application. Therefore, the dilemma of a device for research on sample corrosion by a corrosion solution lacking multi-factor coupling in the past is alleviated, and the design of a device system for research on sample corrosion by a corrosion solution with multi-factor coupling is provided.

Classes IPC  ?

• G01N 17/00 - Recherche de la résistance des matériaux aux intempéries, à la corrosion ou à la lumière
• G01N 15/08 - Recherche de la perméabilité, du volume des pores ou de l'aire superficielle des matériaux poreux

Abrégé

Disclosed in the present invention are a full-duplex relay-based UAV air computation system and a trajectory and power optimization method. In the UAV air computation system, a UAV is used as a full-duplex relay to perform data aggregation and forwarding. The method comprises: establishing an optimization problem with the objective of minimizing a time-averaged mean-square error of air computation, solving the optimization problem under the constraints of sensor transmitting power, an information transmission rate, a UAV trajectory, and a denoising factor, and for the overall joint optimization problem, determining optimization variables one by one by using an alternate optimization method according to high coupling of the optimization variables. According to the present invention, the mean-square error is minimized under the guarantee of a communication rate, the optimization problem is decomposed into four independent sub-optimization problems, and the trajectory and power of the UAV are optimized by using a low complexity algorithm.

Classes IPC  ?

• H04B 7/185 - Stations spatiales ou aériennes
• H04W 52/06 - Algorithmes TPC

Abrégé

The present invention provides a lifting appliance and method for an underground auxiliary transportation system to transfer materials. The lifting appliance comprises a lifting appliance body, guide plates mounted on two ends of the lifting appliance body by means of bolts, rotating locks mounted on four ends of the lifting appliance body, driving units for driving the rotating locks to rotate, a transmission assembly for connecting the rotating locks to the driving units, lifting pins used for preventing the rotating locks from rotating mistakenly, and sensors for controlling the lifting appliance to operate and protecting safety. The lifting appliance of the present invention can meet the ground-to-air and ground-to-ground transfer requirements of underground materials, the safety protection sensor can prevent misoperation of the lifting appliance, and the lifting appliance can adapt to standard containers of different sizes and has certain adaptability to narrow terrains, and can improve the stability of the whole mechanism in cooperation with a pull rope mechanism. Descending, unlocking, locking and ascending can be automatically achieved, thereby improving the working efficiency.

Classes IPC  ?

• B66C 1/66 - Eléments ou dispositifs de prise de la charge adjoints aux mécanismes de levage, de descente ou de halage, ou adaptés pour être utilisés avec ces mécanismes et transmettant les efforts à des articles ou à des groupes d'articles par moyens mécaniques comportant des organes de saisie ayant une forme complémentaire de celle des objets à manipuler s'engageant dans des trous, des évidements ou des renflements spécialement aménagés sur les objets pour en permettre la prise
• B66C 11/04 - Chariots suspendus
• B66C 15/00 - Mécanismes de sécurité

Abrégé

A full-length vibration excitable component device for measuring the strength of a rock and a gel material. The device comprises a steel rod member (1), a vehicle body (2), a vibration motor (3), a frequency measurement element (4) and an integrated lead harness (5), wherein a through slot (6) is provided in the steel rod member (1), the vehicle body (2) is placed in the through slot (6), and a first mounting slot and a second mounting slot are respectively provided on the top of the vehicle body (2). By means of the device, a large number of steel rod members (1) such as reinforcing steel bars and anchor rods used in geotechnical engineering and structural engineering are taken as "signal generators", the interior of each steel rod member (1) is grooved for having a movable vibration excitation apparatus and a frequency sensing element arranged therein, and the positions of the vibration excitation apparatus and the frequency sensing element are accurately determined by using an integrated lead harness (5) with scales, thereby realizing operations of performing excitation and signal collection at any position on the full length of the metal rod member. The vibration excitation and detection elements of the device can be recycled and reused, thereby facilitating maintenance, such that the detection cost can be significantly reduced.

Classes IPC  ?

• G01N 19/00 - Recherche sur les matériaux par des procédés mécaniques
• G01N 29/04 - Analyse de solides

Abrégé

Disclosed is an unmanned aerial vehicle relay selection method for an underground space post-disaster emergency scenario, comprising the following steps: acquiring, on the basis of a prediction range of a D2D user for an unmanned aerial vehicle, the maximum rate, the minimum rate and the average rate of the D2D user transmitting data by means of the assistance of the unmanned aerial vehicle, so as to acquire a first uncertain preference sequence of the D2D user for the unmanned aerial vehicle and a second uncertain preference sequence of the unmanned aerial vehicle for the D2D user; acquiring, on the basis of the first uncertain preference sequence and the second uncertain preference sequence, a preference policy of the D2D user for the unmanned aerial vehicle, and after performing matching according to a multiple-to-one bilateral matching algorithm, swapping and matching any two unmanned aerial vehicles that have been matched by the D2D user, so as to acquire a stable matching result of the bilateral swapping. The algorithm of the present invention has low computational complexity, allows the same relay unmanned aerial vehicle to cooperate in the same time slot with a plurality of D2D user pairs for communication, achieves stable matching results, and can ensure that as many rescuers as possible can promptly and effectively communicate.

Classes IPC  ?

• H04W 4/70 - Services pour la communication de machine à machine ou la communication de type machine
• H04W 40/20 - Sélection d'itinéraire ou de voie de communication, p.ex. routage basé sur l'énergie disponible ou le chemin le plus court sur la base de la position ou de la localisation géographique
• H04B 7/185 - Stations spatiales ou aériennes

Abrégé

A powerful mixing and shearing device and method suitable for fine-particle flotation of minerals. The powerful mixing and shearing device suitable for the fine-particle flotation of minerals comprises a slurry mixing barrel. The slurry mixing barrel is provided in sequence from bottom to top with a first-section powerful mixing area (100), a second-section powerful shearing area (200), and a third-section powerful conveying area (300); mineral slurry enters the first-section powerful mixing area (100) from the bottom of the slurry mixing barrel, passes through the second-section powerful shearing area (200) and is then outputted from the third-section powerful conveying area (300).

Classes IPC  ?

• B03D 1/16 - Machines de flottation à propulseurs; Machines à subaération

Abrégé

A video person re-identification method based on complex underground space trajectory fusion, solving the problem of large-range target shielding in complex underground space video person re-identification. Accurate person trajectory prediction can be realized by means of a Social-GAN model; a time-space trajectory fusion model is constructed, and a person trajectory video that is not affected by shielding is introduced into a re-identification network, thereby solving the problem of apparent visual feature extraction errors caused by shielding, and effectively relieving the influence of a shielding problem on re-identification performance; in addition, a trajectory fusion MARS_traj dataset is constructed, and a time frame number and space coordinate information are added for a person on the MARS dataset, so that the dataset is suitable for the video person re-identification method based on complex underground space trajectory fusion.

Classes IPC  ?

• G06V 20/40 - RECONNAISSANCE OU COMPRÉHENSION D’IMAGES OU DE VIDÉOS Éléments spécifiques à la scène dans le contenu vidéo
• G06V 20/52 - Activités de surveillance ou de suivi, p.ex. pour la reconnaissance d’objets suspects
• G06V 10/75 - Appariement de motifs d’image ou de vidéo; Mesures de proximité dans les espaces de caractéristiques utilisant l’analyse de contexte; Sélection des dictionnaires
• G06V 10/774 - Dispositions pour la reconnaissance ou la compréhension d’images ou de vidéos utilisant la reconnaissance de formes ou l’apprentissage automatique utilisant l’intégration et la réduction de données, p.ex. analyse en composantes principales [PCA] ou analyse en composantes indépendantes [ ICA] ou cartes auto-organisatrices [SOM]; Séparation aveugle de source méthodes de Bootstrap, p.ex. "bagging” ou “boosting”
• G06V 10/80 - Fusion, c. à d. combinaison des données de diverses sources au niveau du capteur, du prétraitement, de l’extraction des caractéristiques ou de la classification
• G06K 9/62 - Méthodes ou dispositions pour la reconnaissance utilisant des moyens électroniques

Abrégé

A test system and method for a dynamic interaction force between flotation particles and bubbles, relating to the technical field of sensitive force test research, and solving the problem in the prior art that a measurement device is high in price and is mostly suitable for a fluid dynamics condition of a low Reynolds number. The test system comprises a motion driving unit, a displacement sensor (2), a bubble generation unit, a mechanical test unit, an image monitoring unit and a signal acquisition and processing unit; the motion driving unit is connected to the bubble generation unit and can move in a vertical direction; the displacement sensor (2) is connected to the motion driving unit; the mechanical test unit is provided below the bubble generation unit; the image monitoring unit is provided on a side of the mechanical test unit; the signal acquisition and processing unit is electrically connected to the displacement sensor (2), the mechanical test unit, and the image monitoring unit, respectively. The present invention is flexible in operation and controllable in costs.

Classes IPC  ?

• G01N 15/00 - Recherche de caractéristiques de particules; Recherche de la perméabilité, du volume des pores ou de l'aire superficielle effective de matériaux poreux
• G01N 19/00 - Recherche sur les matériaux par des procédés mécaniques

Abrégé

A time domain electromagnetic tensor based logging method, relating to the field of induction logging. A transmitting coil system Tx and a receiving coil system Rx are each composed of three orthogonal direction coils, and the transmitting coil system and the receiving coil system form a borehole probe; a time domain electromagnetic field is excited by means of two orthogonal transmitting coil systems Tx, and a secondary field signal is received by two orthogonal receiving coil systems Rx located above transmitting coils and having a distance D; during each measurement, three directions are used for transmitting, nine component data is received at the same time, and each component is a series of induction potentials in one-to-one correspondence with measurement time sequences, and a potential or resistance change, from near to far, of the rock stratum where a measurement point is located is obtained after time-depth conversion. According to the logging method, the downhole construction efficiency is improved, the anisotropy characteristics of a geologic body are effectively identified by fully detecting geological information of a geologic body in each component direction, and the detection precision and range are improved.

Classes IPC  ?

• G01V 3/18 - Prospection ou détection électrique ou magnétique; Mesure des caractéristiques du champ magnétique de la terre, p.ex. de la déclinaison ou de la déviation spécialement adaptée au carottage
• G01V 3/38 - Traitement de données, p.ex. pour l'analyse, pour l'interprétation ou pour la correction
• E21B 47/00 - Relevés dans les trous de forage ou dans les puits

Abrégé

Provided in the present invention is an industrial process soft-measurement method based on a federated incremental stochastic configuration network. The method comprises: acquiring historical industrial process auxiliary data and product quality data corresponding thereto; finding an optimal hidden-layer parameter; a central server performing processing to obtain global parameters, and downloading same to each factory to serve as a hidden-layer parameter of a local model; the local model of each factory calculating a newly added hidden-layer output and constructing a hidden-layer output matrix; obtaining an output weight of the current network by means of an optimization algorithm, and uploading the output weight to the server for weighted aggregation; and when the number of hidden-layer nodes of the current network exceeds the given maximum number of hidden-layer nodes or the residual error in the current iteration satisfies an expected tolerance, not adding a new node, and modeling being completed, so as to obtain a global federated incremental stochastic configuration network. By means of the present invention, the prediction performance of a model can be effectively improved, and data privacy can also be effectively protected, such that the requirements for industrial process soft measurement can be effectively met.

Classes IPC  ?

• G06F 30/20 - Optimisation, vérification ou simulation de l’objet conçu

Abrégé

The present application relates to a UWB technology-based attitude self-correcting underground transportation device and a control method therefor. The method comprises: the upper surface of an upper platform of a six-degree-of-freedom motion platform is mounted with a transport clamping and fastening mechanism; at least three UWB tags are comprised in an attitude perception sensor group, and the UWB tags in the attitude perception sensor group are evenly arranged on a side edge of the upper platform of the six-degree-of-freedom motion platform for use in collecting position information; a control module is separately electrically connected to the attitude perception sensor group, the six-degree-of-freedom motion platform, and the transport clamping and fastening mechanism, and by means of sending an electrical signal, drives the six-degree-of-freedom motion platform and the transport clamping and fastening mechanism to clamp of an item to be transported, collect positioning information of the attitude perception sensor group, perform real-time calculation on the attitude of the six-degree-of-freedom motion platform, and adjust the attitude in combination with an expected attitude to keep the transportation process stable. The real-time attitude of the item is obtained by means of arranging several UWB tags, which improves the attitude perception accuracy and stability requirements.

Classes IPC  ?

• H04W 4/02 - Services utilisant des informations de localisation
• H04W 4/029 - Services de gestion ou de suivi basés sur la localisation
• H04W 4/30 - Services spécialement adaptés à des environnements, à des situations ou à des fins spécifiques

Abrégé

An isolated overburden grouting filling method for coal gangue underground emission reduction. The method comprises: determining a grouting filling key stratum (2) according to information of a coal face (1); constructing a directional borehole from an underground tunnel to the inside of the grouting filling key stratum (2); constructing a plurality of branch holes (10) downward in a main hole (12) of the directional borehole; and by establishing a grouting filling system under a mine, gangue obtained from tunneling gangue of the mine and gangue sorting being made into a filling slurry by means of breaking and grinding, and the filling slurry filling fractures below the key stratum through the directional borehole. By means of the method, gangue generated from a mine is directly made into a filling slurry under the mine and then fills overburden mining-induced fractures, thereby achieving harmless disposal of the gangue, effectively supporting a key stratum, and controlling stratum movement and surface subsidence.

Classes IPC  ?

• E21F 15/00 - Procédés ou dispositifs pour mettre en place les matériaux de remblayage dans les travaux du fond
• E21B 7/04 - Forage dirigé

Abrégé

An overlying strata isolation grouting filling green mining method for coal gangue in a high-strength mining working surface, comprising: collecting basic information of the working surface, and determining basic parameters; dividing a filling working surface into n sections according to a distance x in an advancing direction of the filling working surface; dividing sections of the trend of the filling working surface into a plurality of periods; before the filling working surface is mined to the last section in one period, temporarily storing, every day, gangue produced in a mine into a temporary gangue bin of a grouting filling station; and when the filling working surface is mined to the last section in the period, filling a crack area below an overlying strata key layer with grout made of the gangue through ground drill holes above the section until stopping of the whole filling working surface is finished. According to the method, balanced harmless treatment of coal gangue in a coal mining process of a mine is achieved, and a gangue hill does not need to be built in the mine.

Classes IPC  ?

• E21F 15/00 - Procédés ou dispositifs pour mettre en place les matériaux de remblayage dans les travaux du fond

Abrégé

A digital twin drive-based autonomous driving system and method for a monorail crane (2). The system comprises a turnout sensor module, a positioning system module, a data transfer system, an intelligent control system, a digital twin system, and an autonomous driving module. The turnout sensor module is used for sensing the connection position status of a movable rail in a turnout track of a monorail crane; the data transfer system is used for data transmission overground and underground; the transmissions between the intelligent control system and the turnout sensor module, between the intelligent control system and the positioning system module, and between the digital twin system and the intelligent control system, are bidirectional. In the present method, digital twin technology is applied to the autonomous driving of the monorail crane, and the monorail crane is dispatched by means of the autonomous driving module, thereby reducing the investment of underground personnel and preventing safety accidents caused by irregular management or improper driver operations.

Classes IPC  ?

• G05D 1/02 - Commande de la position ou du cap par référence à un système à deux dimensions
• B66C 11/06 - Chariots suspendus roulant sur monorail

Abrégé

A method for characterizing closed pores and connectivity of a coal measure composite reservoir. By means of collecting typical coal seam and mud shale reservoir samples, low-field nuclear magnetic resonance and nuclear magnetic resonance freeze-thaw experiments are carried out for plunger samples and pulverized samples of different particle sizes to obtain a cumulative pore volume distribution and differential pore size distribution of different pulverized particle sizes. An optimal pulverized particle size is determined by means of comparison with the plunger samples, and a distribution range of closed pores is preliminarily determined. Small-angle X-ray scattering experiments of pulverized samples are carried out to obtain a total pore size distribution and pore volume within a pore size range of 1 to 100 nm, and in combination with the results of low-field nuclear magnetic experiments, the total pore volume and closed pore volume of the coal measure composite reservoir are obtained through calculation. On the basis of the lithologic combination type of the coal measure reservoir, by means of combining coal, mud shale and tight sandstone plug samples of different heights, multiple sets of overburden pressure variable factor permeability experiments are carried out to characterize the connectivity of the coal measure composite reservoir under the influence of multiple factors such as pore development and lithologic assemblage, which provides guidance for the comprehensive evaluation of the coal measure reservoir.

Classes IPC  ?

• G01N 15/08 - Recherche de la perméabilité, du volume des pores ou de l'aire superficielle des matériaux poreux
• G01N 24/08 - Recherche ou analyse des matériaux par l'utilisation de la résonance magnétique nucléaire, de la résonance paramagnétique électronique ou d'autres effets de spin en utilisant la résonance magnétique nucléaire

Abrégé

Disclosed is a hydraulic support intelligent liquid supply pump station, comprising a hydraulic support group, a small-flow servo pump group, multiple large-flow variable-frequency pump groups, and multiple hydraulic supports (19) arranged in parallel, each hydraulic support (19) being provided with an actuator. An actuator comprises a pusher cylinder, the pusher cylinder being connected to a scraper chain conveyor (18), a coalcutter (20) riding on the scraper conveyor (18), and the coalcutter (20) being located at a coal face of a mining area (17). Also disclosed is a control method for the hydraulic support intelligent liquid supply pump station. The present invention can prevent violent impact, and prevent a hysteresis effect of a pressure response of the hydraulic support during long-distance power transmission.

Classes IPC  ?

• E21D 23/00 - Soutènements du toit dans les mines pour déplacement pas à pas, p.ex. en combinaison avec des dispositions pour le déplacement de convoyeurs, machines de mines ou guidages pour ceux-ci

Abrégé

Disclosed are an intelligent liquid supply system for hydraulic supports, comprising: a monitoring control system (2). The monitoring control system (2) comprises a hydraulic support group, a pressure monitoring system, a flow monitoring system, and an electro-hydraulic reversing valve group (13). Pressure changes of a downhole hydraulic support group in a coal mine can be monitored in real time, a required liquid amount of actuators can be dynamically predicted according to a periodic work flow of hydraulic supports and power transmission characteristics of long pipelines, and the liquid supply amount of a multi-pump linkage liquid supply system is adjusted in real time, thereby achieving adaptive adjustment of system pressure and flow in multiple working modes of the support group, and satisfying requirements for intelligent pressure stabilization and energy-saving control of the downhole liquid supply system. Also disclosed is a method for using the system.

Classes IPC  ?

• E21D 23/00 - Soutènements du toit dans les mines pour déplacement pas à pas, p.ex. en combinaison avec des dispositions pour le déplacement de convoyeurs, machines de mines ou guidages pour ceux-ci

Abrégé

A separable rack rail driving device having a monorail crane and suitable for a large slope, comprising a driving mechanism, a moving mechanism (5), a four-linkage mechanism, a connection mechanism, a meshing track plate (15), and a transition track plate (18). The driving mechanism comprises a drive motor (3), a meshing gear (2), a receiving rod (14), and a receiving support plate (13). The moving mechanism comprises a moving wheel (16), a clamping wheel (17), a housing, and a telescopic support rod (4). The four-linkage mechanism comprises a first rocker (12), a connecting rod (11), a second rocker (9), and an oil cylinder (10). When the monorail crane moves to the front of the slope, the oil cylinder drives the four-linkage mechanism in advance to feed the meshing gear into the transition track, and adjusts the four-linkage mechanism to a dead point state, such that the telescopic support rod is locked. After the device enters the slope, the meshing gear cooperates with the meshing track plate mounted on the slope to provide an auxiliary drive to the monorail crane moving uphill. The device overcomes the defect of insufficient power, and achieves the smooth and safe operation by means of the telescopic support rod and the dead point characteristics of the four-linkage mechanism.

Classes IPC  ?

• B66C 11/06 - Chariots suspendus roulant sur monorail
• B66C 9/14 - Mécanismes d'entraînement pour chariot ou grue
• B66C 9/02 - Mécanisme de translation incorporé ou adapté aux chariots ou aux grues pour chariots ou pour grues suspendus

Abrégé

A PLC-controlled emulsification device for an emulsion explosive test and a working method of same. The device comprises: an emulsification cylinder (1), a support (2), a kettle cover (3), a stirring mechanism, a digital display control mechanism (29), a material-feeding mechanism and a material-loading mechanism. The emulsification cylinder (1) is arranged at the top of the support (2), the kettle cover (3) is arranged at the top of the emulsification cylinder (1), the stirring mechanism is arranged inside the emulsification cylinder (1), the material-feeding mechanism is arranged at the top of the kettle cover (3), the material-loading mechanism is arranged at the bottom of the emulsification cylinder (1), and the digital display control mechanism (29) is electrically connected to the stirring mechanism, the material-feeding mechanism and the material-loading mechanism; and a heat preservation layer (4) is arranged on an outer wall of the emulsification cylinder (1), an annular heating cavity (30) is formed in the emulsification cylinder (1), a water vapor inlet (5) is provided in the top of the emulsification cylinder (1), a water vapor outlet (6) is formed in the bottom of the emulsification cylinder (1), a material-unloading port (7) is formed in a bottom surface of the emulsification cylinder (1), annular organic viewing glass (8) is arranged on a top surface of the kettle cover (3), a plurality of material-feeding ports (9) are provided in the top of the kettle cover (3), and the material-unloading port (7) is in communication with the material-loading mechanism.

Classes IPC  ?

• G01N 33/22 - Combustibles; Explosifs

Abrégé

An inner ratchet mechanism-based bidirectional anti-slip device for a monorail crane, comprising a follow-up stabilizing mechanism, a track, and front and rear sets of clamping mechanisms having opposite rotational directions. The follow-up stabilizing mechanism comprises a protective housing (14), a middle vehicle (7) capable of sliding and a hydraulic cylinder (13) used for controlling the middle vehicle (7) to slide are provided in a housing body of the protective housing (14), and a front vehicle (1) and a rear vehicle (9) are also fixed to the front and rear ends of the protective housing (14) by means of connecting rods (12), respectively. Each clamping mechanism comprises left and right groups of ratchet devices, each ratch device comprises a fixed rod (5), several inner ratchet wheels (4) capable of rotating unidirectionally are respectively fixed to both ends of the side of the fixed rod (5) close to the track, and the inner ratchet wheels (4) on the front and rear sets of clamping mechanisms have opposite rotational directions. Both ends of the fixed rod (5) on the front clamping mechanism are respectively hinged to the front vehicle (1) and the middle vehicle (7) by means of a front rocker arm (2), and both ends of the fixed rod (5) on the rear clamping mechanism are respectively hinged to the rear vehicle (9) and the middle vehicle (7) by means of a rear rocker arm (8). The device can achieve the bidirectional anti-slip function of the monorail crane, prevent the slip accident of the monorail crane, ensure the safety of operators, and achieve safe transportation.

Classes IPC  ?

• B66C 7/04 - Montage de la voie de roulement
• B66C 9/18 - Mécanisme de translation incorporé ou adapté aux chariots ou aux grues avec moyens pour bloquer chariots ou grues sur les chemins ou voies de roulement afin d'empêcher les mouvements intempestifs

Abrégé

abcdee, M being a microelement, wherein a, b, c, d, and e are respectively mole percent of corresponding elements, a > 15%, b > 15%, 5% ≤ c ≤ 10%, 10 ≤ d ≤ 25%, e ≥ 0%, and a + b + c + d + e = 100. The eutectic high-entropy alloy of the present invention is prepared by a suspension smelting method. The eutectic high-entropy alloy is a eutectic layer structure, and a non-metal main element plays an important role in a eutectic system. The interlamellar spacing is small, the strength and the plasticity are well matched, the mechanical property is excellent, the fluidity is strong, excellent casting performance is achieved, and the eutectic high-entropy alloy has broad application prospects in the fields of aerospace, mechanical industry and the like.

Classes IPC  ?

• C22C 30/00 - Alliages contenant moins de 50% en poids de chaque constituant
• C22C 1/02 - Fabrication des alliages non ferreux par fusion

Abrégé

The present invention relates to a cracking permeability increasing method combining hydraulic fracturing and methane in-situ combustion explosion, applicable to shale gas reservoir exploitation, comprising: firstly, performing horizontal drilling operation on an area to be constructed, and then making a crack around a horizontal drill hole wall by means of shaped charge perforation; continuing to expand the crack around a horizontal hole by means of hydraulic fracturing, and performing methane extraction after a fracturing fluid is discharged; after methane gas is reduced, performing in-situ combustion explosion fracturing on the methane involved in horizontal drilling; after combustion explosion, continuing to expand the crack in the horizontal drill hole such that methane continues to seep out, and then continuing performing extraction; and repeating combustion explosion fracturing and extraction operations, so as to realize combustion explosion cracking permeability increasing, and greatly enhance the exploitation effect of shale gas. The method has reasonable design and high construction feasibility, and is suitable for fracturing reconstruction of unconventional oil and gas reservoirs such as shale gas reservoirs, coal seam gas reservoirs and tight sandstone gas reservoirs.

Classes IPC  ?

• E21B 43/26 - Procédés pour activer la production par formation de crevasses ou de fractures
• E21B 43/263 - Procédés pour activer la production par formation de crevasses ou de fractures en utilisant des explosifs
• E21B 43/267 - Maintien de fractures par étaiement

Abrégé

A self-adaptive anti-shearing large-deformation anchor rod, comprising a free section (1), an anti-shearing large-deformation section (2), and an anchoring section (3). The anti-shearing large-deformation section (2) is composed of an anchoring end connecting rod (21), a free end connecting rod (22), and a sleeve (23). A front end of the anchoring end connecting rod (21) is connected to a threaded end of the sleeve (23), and a rear end of the anchoring end connecting rod (21) is hinged to a front end of the anchoring section (3) by means of a fork joint (25). One end of the free end connecting rod (22) is inserted into one section of the sleeve (23) having clamping teeth (24); several steel balls (4) are arranged on the last portion of the clamping teeth (24) in the circumferential direction of the free end connecting rod (22); a bolt (5) is arranged at an end of the free end connecting rod (22), and the bolt (5) blocks the steel balls (4) and presses the steel balls (4) to cut the clamping teeth (24) to provide a resistance force, so as to adapt to a large deformation; and the other end of the free end connecting rod (22) is hinged to a rear end of the free section (1) by means of a fork joint (26). The anti-shearing large-deformation section (2) is connected to the free section (1) and the anchoring section (3) in a hinged manner, in order to convert a shearing force into an axial force, such that the anti-deformation and anti-shearing performances are improved, and a constant resistance is provided by means of the steel balls (4) cutting the clamping teeth (24) inside the sleeve (23).

Classes IPC  ?

• E21D 20/00 - Mise en place des boulons d'ancrage
• E21D 21/00 - Boulons d'ancrage pour la protection du toit, de la sole ou du revêtement des puits

Abrégé

A cascade high-energy earthquake-fire coupling test system. The cascade high-energy earthquake-fire coupling test system comprises a self-balancing loading system, a lifting furnace system and a smoke collecting hood system erected on an upper end of the lifting furnace system and capable of collecting smoke, wherein the self-balancing loading system comprises two movable counterforce frames (8) capable of traveling on a first track (5), and a high-temperature self-sensing loading beam (1) erected on the tops of the two movable counterforce frames (8); the lifting furnace system comprises a furnace body mounting rack, which is internally provided with a combined furnace body (14) in a hoisted manner and is capable of traveling on a second track (10), an upper end of the furnace body mounting rack is slidably connected to two movable beams (9), lower end faces of the movable beams (9) are provided with a movable winch (22), and an operation device (16) is hoisted at the bottom of the movable winch (22). The system can satisfy the requirements of different earthquake-fire coupling tests.

Classes IPC  ?

• G01M 7/06 - Supports pour test multidirectionnel
• G01M 7/02 - Test de vibration
• G01M 99/00 - Matière non prévue dans les autres groupes de la présente sous-classe

Abrégé

A vector-resistivity-based real-time advanced detection method for a water-bearing hazard body. The method comprises: on the basis of a pre-constructed detection environment, acquiring, in real time, the potential difference between receiving dipoles, which are on a shield machine, wherein the receiving dipoles comprise first receiving dipoles and second receiving dipoles (S220); according to a relative positional relationship between each receiving dipole and each power supply dipole, and the potential difference between the receiving dipoles, converting resistivity by using a steady-flow field resistivity calculation formula, so as to obtain the apparent resistivity of the receiving dipoles (S240); drawing apparent resistivity curves of the receiving dipoles by using the position of each power supply dipole as the abscissa and apparent resistivity as the ordinate (S260); and determining a detection result of an anomalous body by performing analysis according to each apparent resistivity change curve (S280). During a continuous tunneling process of an underground shield machine, electrical signals are constantly received by receiving dipoles, and apparent resistivity curves of the receiving dipoles are drawn, such that the condition of a water-bearing hazard body being ahead of tunneling is detected in real time, thereby improving the real-time performance of an advanced prediction result.

Classes IPC  ?

• G01V 3/04 - Prospection ou détection électrique ou magnétique; Mesure des caractéristiques du champ magnétique de la terre, p.ex. de la déclinaison ou de la déviation fonctionnant par propagation de courant électrique en utilisant du courant continu

Abrégé

Disclosed is a multi-circle ring assembly type shield cutter head, comprising a central cutter head (3) and a plurality of ring-shaped cutter heads (2) which are driven to rotate independently from one another; the ring-shaped cutter heads (2) are independently driven by a plurality of driving devices (5) to rotate around extendable and retractable auxiliary shafts that are fixed on a shield tunneling machine; a main shaft of the shield tunneling machine only needs to drive the central cutter head to rotate, which reduces the strength of the main shaft and driving force requirements, which facilitates enlarging the diameter of the entire cutter head of the shield tunneling machine. The width and the assembly number of the ring-shaped cutter heads are adjusted according to tunnel diameter and engineering geological conditions, and thus shield cutter heads having different diameters may be formed; the number and strength requirements of the extendable and retractable auxiliary shafts and driving devices surrounded by different ring-shaped cutter heads are adjusted according to requirements, so that requirements of different stratum geological conditions are met; and the propelling strokes and angles of different ring-shaped cutter heads are adjusted by adjusting the lengths of the extendable and retractable auxiliary shafts, and the rotating direction and rotational speed of different ring-shaped cutter heads may be independently adjusted, thereby effectively improving rock breaking efficiency. Further disclosed is a method for using said shield cutter head.

Classes IPC  ?

• E21D 9/087 - Exécution en utilisant un bouclier de percement avec des moyens complémentaires de foration ou d'incision avec une tête de forage de type rotatif coupant simultanément toute la section transversale, c. à d. tunneliers pleine-face

Abrégé

Disclosed in the present invention are a visual fire monitor system having a variable-viewing-angle binocular structure, and an operating method. The system comprises a fire monitor, wherein a fire monitor angle adjustment mechanism for checking and adjusting a horizontal angle and a pitch angle of the fire monitor is disposed at the bottom of the fire monitor. The system further comprises: a variable-viewing-angle binocular visual system, which is disposed at the rear of the fire monitor, and is used for identifying an image of a scene of a fire at the current viewing angle and for sending a signal to a controller. The controller calculates the coordinates of the fire monitor after the rotation of the variable-viewing-angle binocular visual system, so as to calculate the spatial location of the scene of the fire relative to the fire monitor, and a horizontal angle and a pitch rotation angle required for the fire monitor to be aimed at the scene of the fire. The controller sends an instruction to control the fire monitor to rotate, and the fire monitor sprays a fire extinguishing agent. By means of the present invention, the problem of it being difficult to identify and locate a scene of a fire outside a field of view due to an existing intelligent fire monitor based on binocular vision positioning having a single viewing angle is solved.

Classes IPC  ?

• A62C 31/03 - Buses spécialement conçues pour la lutte contre l'incendie réglables, p.ex. depuis la pulvérisation jusqu'au jet concentré ou vice-versa

Abrégé

A method for extracting a three-dimensional surface deformation by combining unmanned aerial vehicle digital orthophoto maps (DOMs) and satellite-borne SAR images, which method is applicable to the field of surface deformation and geological disaster monitoring. The method comprises: acquiring an LOS-direction surface deformation of a target region by using SAR or InSAR technology; acquiring surface image data of the target region by using an unmanned aerial vehicle, and generating DOMs having the same resolution; by using a fine registration method, calculating coordinate offsets of homonymous pixel points on DOMs of two periods in the east-west direction and in the south-north direction, and in view of the resolution of the DOMs, obtaining horizontal movements of a surface point corresponding to each pixel point in the east-west and south-north directions; and substituting, into an SAR three-dimensional deformation model, the horizontal movements in the east-west and south-north directions that are acquired by using the DOMs, and the LOS-direction deformation, and calculating a vertical surface subsidence value W, so as to obtain a three-dimensional surface deformation. In the method, unmanned aerial vehicle DOMs are combined with satellite-borne SAR images to acquire a three-dimensional surface deformation, such that a wide range is covered, there is no need to come in contact with the surface, and a good effect is achieved, thereby providing a new method for monitoring a three-dimensional surface deformation.

Classes IPC  ?

• G01B 7/24 - Dispositions pour la mesure caractérisées par l'utilisation de techniques électriques ou magnétiques pour mesurer les déformations dans un solide, p.ex. au moyen d'une jauge de contrainte à résistance en utilisant la variation des propriétés magnétiques
• G01S 19/42 - Détermination de position
• G01S 13/90 - Radar ou systèmes analogues, spécialement adaptés pour des applications spécifiques pour la cartographie ou la représentation utilisant des techniques d'antenne synthétique
• G01S 13/86 - Combinaisons de systèmes radar avec des systèmes autres que radar, p.ex. sonar, chercheur de direction

Abrégé

The present invention relates to a device and a method for monitoring separated-bed dynamic development during overlying strata mining. The monitoring device comprises a settlement magnetic ring assembly and a mounting guide pipe. The settlement magnetic ring assembly comprises an anchor hoop assembly, a magnetic induction iron ring and a magnetic ring sleeve sleeved outside the magnetic induction iron ring, wherein the anchor hoop assembly is arranged on the outer circumference of the magnetic ring sleeve and has a contracted state and an unfolded state; the anchor hoop assembly in the contracted state can move in a monitoring hole; the anchor hoop assembly in the unfolded state and a hole wall of the monitoring hole are provided with at least two fixing points, which are located at different heights in the vertical direction; two ends of the mounting guide pipe are respectively connected to a drill rod and the magnetic ring sleeve; and the anchor hoop assembly is in the contracted state or the unfolded state by means of the cooperation of the drill rod and the mounting guide pipe, such that mounting and recovery of the settlement magnetic ring assembly are achieved. The monitoring device is simple in structure and is convenient to operate, and not only can same be stably fixed to the wall of the monitoring hole for a long time, but same can also be removed from the monitoring hole after monitoring, and can be repeatedly used.

Classes IPC  ?

• G01C 5/00 - Mesure des hauteurs; Mesure des distances transversales par rapport à la ligne de visée; Nivellement entre des points séparés; Niveaux à lunette
• E21F 17/18 - Adaptations particulières des dispositifs de signalisation ou d'alarme
• E21F 17/00 - Procédés ou dispositifs destinés à être utilisés dans les mines ou tunnels, non couverts ailleurs

Abrégé

Disclosed in the present invention are a scraper chain monitoring system and method based on the measurement of the light transmission amount of a torsion spring. The system comprises: a chain wheel torsion detection device, a fixing device, a wireless receiver, an A/D converter and an industrial computer. In the method, the relative torsion of two chain wheels is converted into a change in the density of a torsion spring, a laser sensing panel converts a light transmittance area into the magnitude of a current, and an industrial computer calculates a torque change range by means of a preset threshold value and a program of the industrial computer itself, so as to monitor a working condition of a chain. The method has a novel design, the system is stable and reliable, and the method and system have a relatively high promotional value.

Classes IPC  ?

• B65G 43/02 - Dispositifs de commande, p.ex. de sécurité, d'alarme ou de correction des erreurs détectant une condition physique dangereuse des porte-charges, p.ex. pour stopper l'entraînement en cas d'échauffement
• B65G 19/20 - Chaînes, cordes ou câbles de traction

Abrégé

The present invention relates to the field of buildings. Disclosed is a floor structure composed of prefabricated boxes, comprising a prefabricated box array composed of a plurality of prefabricated boxes. Communicating pipes communicated with each other are connected between adjacent prefabricated boxes in the prefabricated box array; pipelines are laid in the prefabricated box array; cross beams are provided in gaps of the prefabricated box array; the plurality of prefabricated boxes have one-to-one correspondence to a plurality of beam grids of the cross beams, respectively; outer frame beams fixedly connected to the cross beams are provided on the periphery of the prefabricated box array; a plurality of peripheral prefabricated boxes located on the periphery of the prefabricated box array are all connected to webs of the outer frame beams; and pipe outlets corresponding to the pipelines are formed in the webs of the outer frame beams. In the present invention, the floor structure is structurally unitized by means of the prefabricated box array, such that damaged prefabricated boxes can be directly replaced in maintenance, without needing to replace the entire structure, thereby prolonging the long-term stable operation time of the entire structure.

Classes IPC  ?

• E04B 5/43 - Structures de planchers de conception particulière; Caractéristiques relatives à la stabilité élastique; Structures de planchers spécialement conçus pour reposer uniquement sur des colonnes, p.ex. planchers-champignons
• E04B 5/48 - Adaptations particulières des planchers pour l'incorporation de conduites, p.ex. pour chauffage ou ventilation

Abrégé

A multi-dimensional space load and fire test system for a tunnel structure, which comprises a multi-point loading self-balancing reaction force system having a rigid platform, two furnace body side-sealing apparatuses (22) and a model assembly and transport apparatus (23) for transporting and situating a tunnel model are on a track on the rigid platform (9), the two furnace body side-sealing apparatuses (22) are respectively used for sealing two end openings of the tunnel model, a tower-type combustion vehicle can be placed within an inner cavity of the tunnel model, a plurality of sets of evenly distributed self-adaptive loading apparatuses (3) used for exerting loading forces on an outer wall of the tunnel model are connected between two reaction force frames (1) of the multi-point loading self-balancing reaction force system. The present system is able to perform loading on tunnel models having different cross section shapes, can be adapted to testing requirements of tunnel structures having different cross section shapes, and with respect to tunnel structure fire testing in particular, a camera of the present system has a large imaging angle of view, the present invention has good heat resistance, possesses both thermal imaging and distance measurement, and can amply satisfy a use requirement for the high temperature environment of a tunnel fire.

Classes IPC  ?

• G01N 31/12 - Utilisation de la combustion

Abrégé

An automatic backwash filter and a working method, applicable for filtering impurities in sewage. The filter comprises a flow channel switching main valve, a valve plate (8), and a cylinder body (12); the valve plate (8) is disposed on an upper opening of the cylinder body (12); the main valve is disposed on the valve plate (8) and communicated with the inside of the cylinder body (12) by means of flow channels; two flow channels are provided on the valve plate (8), one of the flow channels is a filter flow channel (19) in communication with a space in a filter screen (16), and the other one is a backwash flow channel (18) in communication with a space between the filter screen (16) and the cylinder body (12); the flow channel switching main valve comprises a valve body (1); a sewage outlet (30), a water inlet (31), and a water outlet (32) are sequentially provided on the valve body (1) from left to right; a filter outlet connected to the filter flow channel (19) and a backwash outlet connected to the backwash flow channel (18) are sequentially provided below the valve body (1) from left to right; a two-position five-way reversing valve group that automatically switches to a normal working mode or a backwash mode according to a blockage situation of the filter screen (16) is provided between the sewage outlet (30), the water inlet (31), and the water outlet (32), and the filter outlet and the backwash outlet.

Classes IPC  ?

• B01D 29/60 - Filtres à éléments filtrants stationnaires pendant la filtration, p.ex. filtres à aspiration ou à pression, non couverts par les groupes ; Leurs éléments filtrants combinés dans une même structure à des dispositifs de commande de la filtration
• B01D 29/23 - Eléments filtrants avec des supports agencés pour la filtration à courant dirigé vers l'extérieur

Abrégé

A phase-change cooling type permanent magnet direct-drive blower, relating to the technical field of blowers. Provided is a blower capable of achieving high-efficiency and low-energy-consumption cooling. The blower comprises a motor housing, a winding, a stator core, a permanent magnet, a rotor core, a motor shaft, a volute, an impeller, and a volute base, and further comprises a cooling system and a pair of phase-change cooling mechanisms arranged between the motor shaft and the motor housing; each phase-change cooling mechanism comprises fixed plates, a liquid inlet pipe group, fins, temperature sensors, a liquid outlet pipe group, and heat storage straight pipes; a pair of fixed plates are arranged in parallel and located between the liquid inlet pipe group and the liquid outlet pipe group, a plurality of heat storage straight pipes are arranged between the liquid inlet pipe group and the liquid outlet pipe group, and each heat storage straight pipe comprises a phase change material, an inner copper pipe, a support, and an outer copper pipe sequentially arranged from inside to outside; and the cooling system comprises a cooling flow channel, and an inlet flow valve, an outlet flow valve, a switching valve, a liquid storage tank, a flow pump, and a cooling mechanism provided on the cooling flow channel. The present invention can achieve a good cooling effect on the blower.

Classes IPC  ?

• F04D 25/08 - Ensembles comprenant des pompes et leurs moyens d'entraînement le fluide énergétique étant l'air, p.ex. pour la ventilation
• H02K 9/20 - Dispositions de refroidissement ou de ventilation pour machines avec enveloppe fermée et circuit fermé de refroidissement utilisant un agent de refroidissement liquide, p.ex. de l'huile dans lesquels l'agent de refroidissement se vaporise dans l'enveloppe de la machine
• F28D 1/04 - Appareils échangeurs de chaleur comportant des ensembles de canalisations fixes pour une seule des sources de potentiel calorifique, les deux sources étant en contact chacune avec un côté de la paroi de la canalisation, dans lesquels l'autre source d avec des canalisations d'échange de chaleur immergées dans la masse du fluide avec canalisations tubulaires

Abrégé

edededddffff changes, and thus geological conditions ahead are detected in real time.

Classes IPC  ?

• E21C 25/10 - Barres; Tambours
• E21C 35/00 - EXPLOITATION DES MINES OU CARRIÈRES - Détails ou accessoires de machines pratiquant des saignées ou libérant complètement la matière minérale de la veine, non prévus dans les groupes , ou
• E21C 39/00 - Dispositifs pour tester sur place la dureté ou d'autres propriétés de matières minérales, p.ex. pour fournir des informations relatives au choix d'outils miniers appropriés

Abrégé

abcdeff, wherein X is a trace element, a, b, c, d, e and f are the molar percentages of the corresponding elements, respectively, a > 5%, b > 5%, c > 5%, d > 5%, a + b + c + d > 90%, 0.2% < e < 0.4%, and f ≥ 0%. According to the present invention, a single principal element diagram of original cast iron is expanded into multiple principal elements, such that the matrix structure can be composed of two phases of FCC and a compound or FCC and a graphite phase, and good mechanical properties are obtained. During the alloy design, the positive influences of a trace element on the oxidation resistance, corrosion resistance and high-temperature stability of an alloy are fully utilized, and the alloy has a good comprehensive performance.

Classes IPC  ?

• C22C 30/00 - Alliages contenant moins de 50% en poids de chaque constituant
• C22C 1/02 - Fabrication des alliages non ferreux par fusion
• C21C 1/08 - Fabrication de la fonte de seconde fusion
• C21C 1/10 - Fabrication des fontes à graphite sphéroïdal
• B33Y 70/00 - Matériaux spécialement adaptés à la fabrication additive

Abrégé

Provided is a preparation method for a nitrogen-phosphorus doped porous carbon for wide-pH range oxygen reduction electrocatalysis. A natural mineral-based carbon source is taken as a raw material, and synthesis is performed in two paths by means of "a nitrogen-phosphorus sequential doping method". The preparation method is high in cost benefit, and is sustainable and can be used for large-scale production; a variable-frequency ultrasonic mixing method ensures relatively high performance. The prepared nitrogen-phosphorus doped porous carbon has dispersed sheet morphology, rich edges and defects, large specific surface area and pore volume, sufficient micropores and mesopores and a proper amount of doped nitrogen and doped phosphorus, shows good electrochemical catalytic performance in an alkaline electrolyte, an acidic electrolyte, and a neutral electrolyte as an oxygen reduction reaction electrocatalyst, has good micromolecule and methanol poisoning resistance, and has good application potential in alkaline fuel cells/metal-air cells, proton exchange membrane fuel cells (acidic electrolytes) and biofuel cells (neutral electrolytes).

Classes IPC  ?

• C01B 32/05 - Préparation ou purification du carbone non couvertes par les groupes , , ,
• H01M 4/96 - PROCÉDÉS OU MOYENS POUR LA CONVERSION DIRECTE DE L'ÉNERGIE CHIMIQUE EN ÉNERGIE ÉLECTRIQUE, p.ex. BATTERIES Électrodes Électrodes inertes ayant une activité catalytique, p.ex. pour piles à combustible Électrodes à base de carbone
• B01J 35/10 - Catalyseurs caractérisés par leur forme ou leurs propriétés physiques, en général solides caractérisés par leurs propriétés de surface ou leur porosité

Abrégé

A lidar and camera joint calibration method, where a utilized lidar scanning mode is non-repetitive scanning, i.e. a trajectory is different every time the lidar scans, and after static capture for a number of seconds, point cloud coverage within a field of view approaches 100%. According to a non-repetitive scanning characteristic of this type of lidar, a self-made large size checkerboard calibration board is sequentially placed at different positions in an overlapping field of view of a lidar and a camera, and while the camera captures an image, the lidar captures three-dimensional point cloud data for a relatively long amount of time, and obtained three-dimensional point cloud data is converted into a two-dimensional normalized gray scale image according to point cloud intensity, then corner point detection is performed on the normalized gray scale image and the camera image, a corresponding two-dimensional gray scale image and camera image corner point pair is obtained, and subsequently, precise three-dimensional point cloud corner point coordinates are found in a backtracking manner according to a corner point in the two-dimensional gray scale image, and finally a joint calibration result is obtained according to a corresponding three-dimensional point cloud corner point and camera image corner point coordinates. The present method is more precise compared to a traditional method.

Classes IPC  ?

• G06T 7/80 - Analyse des images capturées pour déterminer les paramètres de caméra intrinsèques ou extrinsèques, c. à d. étalonnage de caméra
• G06T 7/13 - Détection de bords
• G06T 5/00 - Amélioration ou restauration d'image

Abrégé

A coal/gangue recognition method in a top coal caving process based on multi-sensor information fusion. By means of the combination of a BP neural network and a support vector machine, the BP neural network learns screened vibration signals, a trained BP neural network classification model can accurately recognize and classify the vibration signals generated by a coal/gangue impacting on a tail beam of a hydraulic support for top coal caving, the learning training of the support vector machine on screened sound signals can accurately and efficiently recognize and classify the sound signals generated by the coal/gangue impacting on the tail beam of the hydraulic support for top coal caving, a D-S evidence performs decision-level fusion on predicted structures to improve the accuracy and credibility of coal/gangue recognition, and a spectrum recognition apparatus can monitor the coal/gangue on a scraper in real time, which is an important basis for controlling the opening or closing of an opening for top coal caving. Since two recognition approaches are provided, the coal/gangue recognition precision is further improved; and the method not only can adapt to working conditions having good visibility, but also can adapt to working conditions having poor visibility.

Classes IPC  ?

• G06K 9/62 - Méthodes ou dispositions pour la reconnaissance utilisant des moyens électroniques

Abrégé

An adjustment apparatus and method for tension balancing between multiple ropes, relating to the technical field of multi-rope hoisting. The apparatus comprises multiple tension balancing units (1). Each tension balancing unit (1) comprises: a hydraulic cylinder (2), which transmits torque; a speed increasing module (3) used for speed increasing transmission, one transmission end of the speed increasing module (3) being in transmission connection to the hydraulic cylinder (2); a roller (4), which is in transmission connection to the other transmission end of the speed increasing module (3); and hoisting wire ropes (5) wound on the roller (4). The hydraulic cylinders (2) of the tension balancing units (1) are communicated with each other by means of a communication pipeline (6). According to the apparatus, by means of the mechanism that hydraulic pressure can be automatically balanced by making the hydraulic cylinders communicated with each other, torque changes in a hydraulic pressure balancing process are converted into rotation of the roller, and then tension balancing adjustment such as relaxation or tensioning is performed on the wound hoisting wire ropes; thus, large-range automatic adjustment can be implemented in a limited equipment space, and the effectiveness and timeliness of tension balancing adjustment can be ensured.

Classes IPC  ?

• B66B 7/10 - Aménagements des câbles ou filins pour égalisation de la tension des câbles ou des filins
• B66B 15/00 - ASCENSEURS; ESCALIERS OU TROTTOIRS ROULANTS - Parties constitutives principales des dispositifs d'enroulement des ascenseurs de puits de mine
• B66B 15/08 - Mécanismes d'entraînement
• B66B 15/02 - Supports de corde ou de câble

Abrégé

An ultra-deep vertical shaft multi-rope hoisting system and a guiding method therefor, which belong to the field of mine hoisting technology. The system comprises an upper guide wheel train (1); a lower guide wheel train (2); a front hoisting container (3); a rear hoisting container (4); a drive unit (5); a front hoisting rope (6), which is hung on the upper guide wheel train (1), one end being connected to a top part of the front hoisting container (3), and the other end being connected to the drive unit (5); a rear hoisting rope (7), which is hung on the lower guide wheel train (2), one end being connected to a top part of the rear hoisting container (4), and the other end being connected to the drive unit (5); a tail rope (8), one end being connected to a bottom part of the front hoisting container (3), and the other end being connected to a bottom part of the rear hoisting container (4); further provided are a plurality of balance head ropes (9), which are placed on the upper guide wheel train (1), one end of the balance head ropes (9) being connected to top parts of the front hoisting container (3), and the other ends being connected to top parts of the rear hoisting container (4). The present hoisting system is provided with the balance head ropes (9), which cause a traction load borne by the drive unit (5) to be greatly reduced, greatly prolongs the effective service life of the drive unit (5), and allows an ultra-deep vertical shaft multi-rope hoisting system to be able to perform hoisting and lowering work of greater loads.

Classes IPC  ?

• B66B 9/00 - Genres ou types d'ascenseurs installés dans les bâtiments ou édifices ou adjoints à ceux-ci
• B66B 7/10 - Aménagements des câbles ou filins pour égalisation de la tension des câbles ou des filins
• B66B 15/02 - Supports de corde ou de câble

Abrégé

An intelligent reliability evaluation and service life prediction method for a kilometer deep well hoist brake, the method including: the establishment of a digital twin model for a hoist brake, data acquisition and synchronization, and reliability evaluation and service life prediction, wherein the digital twin model for the hoist brake can accurately reflect actual physical characteristics of the hoist brake, the data acquisition and synchronization can realize real-time mapping between a physical entity of the hoist brake and the digital twin model therefor, and furthermore, on the basis of the digital twin model for the hoist brake, the reliability evaluation and service life prediction are realized. Digital twin technology is combined with a reliability analysis method, so that real-time updating of reliability evaluation and service life prediction of the hoist brake are realized, and the problem of it being difficult to execute reliability evaluation and service life prediction due to the fact that some of the parameters of the hoist brake are difficult to directly monitor, reliability data statistics are difficult to compile, or data samples are insufficient is solved.

Classes IPC  ?

• G06F 30/23 - Optimisation, vérification ou simulation de l’objet conçu utilisant les méthodes des éléments finis [MEF] ou les méthodes à différences finies [MDF]

Abrégé

A large-deformation resistance-increased anti-shearing anchor cable, and a construction method and working method thereof, which are suitable for underground engineering use. The large-deformation resistance-increased anti-shearing anchor cable comprises an anchor cable (10); an energy absorption column (1) is provided at the tail end of the anchor cable (10), an anti-shearing sleeve (3) is provided at the outer side of the energy absorption column (1) by means of an anti-deviation device, such that the energy absorption column (1) is axially arranged within the anti-shearing sleeve (3); a ribbed tray (2) is fixed at the tail part of the anti-shearing sleeve (3), and the front end of the anti-shearing sleeve (3) is connected, by means of threads, to a conical limiting plate (7) of a conical structure fitting the anchor cable (10) ; the anti-shearing sleeve (3) is a hollow cylindrical tube, the front end of the energy absorption column (1) is arranged in the conical limiting plate (7) in an abutting manner, an anti-impact baffle plate (4) is arranged at the tail part of the anti-shearing sleeve (3), and a rubber gasket (41) is arranged on the inner side of the anti-impact baffle plate (4); and the energy absorption column (1) comprises a plurality of deformable energy absorption tubes (11) which have different deformation initiating pressures and are connected in an end-to-end manner. The large-deformation resistance-increased anti-shearing anchor cable can allow for large deformation, is not easy to be damaged by shearing, has good anti-impact effect, has an adjustable yielding distance, and has a cable body which is not exposed to occupy the tunnel space.

Classes IPC  ?

• E21D 21/00 - Boulons d'ancrage pour la protection du toit, de la sole ou du revêtement des puits
• E21D 20/02 - Mise en place des boulons d'ancrage avec dispositions pour le scellement

Abrégé

A fast-assembly combined liquid supply valve, comprising a right valve body (26), a left valve body (1), a pre-tightening mechanism, a spring ball linkage mechanism, and a fast assembly plug. The left valve body (1) and the right valve body (26) are combined in the left-right direction; the pre-tightening mechanism is provided in the right valve body (26); the two ends of the spring ball linkage mechanism are respectively arranged in the left valve body (1) and the right valve body (26); and the fast assembly plug is provided on the left valve body (1). The fast-assembly combined liquid supply valve is simple in structure, low in manufacturing cost, high in control precision, and fast in response speed, and can use the structure of the liquid supply valve to achieve the automatic adjustment of pressure between flow channels, and the instantaneous opening and closing of a liquid supply pipe, and a plurality of liquid supply pipes perform liquid supply in a concentrated mode and an assembly speed is fast, and thus, an any amount of liquid supply pipes can perform liquid supply in the concentrated mode, the flexible and fast assembly can be achieved, and the present invention can solve the problem that a plurality of hydraulic pump stations supply the liquid in the concentrated mode in a hydraulic system occasion needing large flow and large pressure. Further disclosed is a usage method and a fast assembly method for the fast-assembly combined liquid supply valve.

Classes IPC  ?

• F16K 17/04 - Soupapes ou clapets de sûreté; Soupapes ou clapets d'équilibrage fermant sur insuffisance de pression d'un côté actionnés par ressort
• F16K 17/164 - Soupapes ou clapets de sûreté; Soupapes ou clapets d'équilibrage fermant sur insuffisance de pression d'un côté et restant fermés après retour à la pression normale
• F16K 31/524 - Moyens mécaniques d'actionnement à manivelle, excentrique ou came à came
• F15B 13/02 - Dispositifs de distribution ou d'alimentation du fluide caractérisés par leur adaptation à la commande de servomoteurs

Abrégé

A method for automatically acquiring three-dimensional shape parameters of a random gangue block. A two-dimensional slice image of a random gangue block is obtained by means of CT scanning, then binarization and denoising are performed, and then a digital three-dimensional model of the random gangue block is reconstructed. For the model, the surface area, the model volume, and a model enclosing cuboid of the digital three-dimensional model of the random gangue block are obtained, and shape indexes of the digital three-dimensional model of the random gangue block and three-dimensional shape characteristics, i.e., elongation e, flatness f, and sphericity ψ, of the model are obtained. CT slicing is used and binarization and denoising are performed, and a digital three-dimensional model of the random gangue block is reconstructed, so as to obtain three-dimensional shape parameters that characterize the random gangue block; thus, the problems of difficulty in obtaining basic shape parameters of random gangue blocks, high subjectivity of measurement accuracy, and high measurement cost are solved. Three-dimensional shape parameters of random gangue blocks are automatically acquired, and the accuracy of measurement results is high.

Classes IPC  ?

• G06T 5/00 - Amélioration ou restauration d'image

Abrégé

A large visual direct shear test platform for solid filling materials, the test platform consisting of a reaction frame, a tamper (4), a loading system, a shear system, and a data monitoring system. The tamper (4) can simulate the tamping process of solid filling materials (30) after filling goaf during the process of solid filling and coal mining. The systems cooperate with one another, such that a large direct shear test can be carried out on the tamped solid filling materials (30), and a large confined compression test can also be performed; relevant data in the test process can be collected to obtain results, i.e. a shear strength parameter, stress-strain characteristics and creep characteristics, of the tamped solid filling materials (30); in addition, the movement and breaking conditions of particles of the solid filling materials (30) and the development process of a shear zone can be observed throughout the whole test process. The platform has a simple structure and various functions, and is a test platform for in-depth studies on the mechanical properties of tamped solid filling materials (30) and the influence of the tamping technology on the mechanical properties of the solid filling materials (30). The study results are of great significance for guiding the selection of solid filling materials and optimizing the solid filling and coal mining technology.

Classes IPC  ?

• G01N 3/24 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique en appliquant des efforts permanents de cisaillement
• G01N 3/02 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique - Parties constitutives

Abrégé

A three-product flotation column and method suitable for high-ash fine-grained coal slime recovery, relating to the technical field of coal recovery. The three-product flotation column comprises an inner-layer column body and an outer-layer column body; a clean coal collection tank a(4) and a feeding pipe are provided on the top of the inner-layer column body; clean coal collection tanks b(8) are provided on the periphery of the top of the outer-layer column body; a stepped jet device (9) is provided at the bottom end of the feeding pipe; a flow baffle plate (10) is provided directly below the stepped jet device (9) and in the inner-layer column body; the upper opening of the inner-layer column body is provided with a plurality of upper water spraying devices around the feeding pipe; the bottom of the inner-layer column body is provided with L-shaped coarse grain recovering channels (5) that are communicated with the outside of the inner-layer column body; the clean coal collection tanks b(8) and outer-layer top water spraying devices (7) are arranged around the opening position of the outer-layer column body; a foam layer vibrating mechanism is provided at a position below each clean coal collection tank b(8) and on the same horizontal plane of the inner-layer column body and the outer-layer column body; inclined flow distribution plates (11) having an annular structure are arranged in the outer-layer column body; and an annular middling coal product collection tank (12) is reserved between each inclined flow distribution plate (11) and the inner-layer column body. The present invention is strong in recovery capacity, strong in coal quality adaptability, and high in separation precision.

Classes IPC  ?

• B01D 1/02 - Evaporateurs avec serpentins chauffants
• B01D 1/14 - SÉPARATION Évaporation avec gaz ou vapeurs chauffés en contact avec le liquide

Abrégé

A high-precision three-component electromagnetic field sensor and a data transmission control system therefor. The high-precision three-component electromagnetic field sensor comprises a box body (1), wherein an X-direction coil structure (2), a Y-direction coil structure (3) and a Z-direction coil structure (4) which have the same structure are arranged in the box body (1); normal directions of the X-direction coil structure (2), the Y-direction coil structure (3) and the Z-direction coil structure (4) are orthogonally combined; a gradienter (5) is arranged in the box body (1); and a circuit control board and a battery (6) are arranged in the box body (1). The exploration explanation precision of an electromagnetic method is improved; potential safety hazards of hidden geological disasters are reduced; an ARM and FPGA combined control mode is used, an FPGA performs real-time collection, and an ARM performs subsequent processing, storage and transmission, such that the overall use performance of a system is effectively improved; and a GPS time service device can make each sampling point have an accurate timestamp, and the deviation between same and an absolute time is less than 30 nS, thereby ensuring the accuracy of data transmission.

Classes IPC  ?

• G01V 3/165 - Prospection ou détection électrique ou magnétique; Mesure des caractéristiques du champ magnétique de la terre, p.ex. de la déclinaison ou de la déviation spécialement adaptée à l'utilisation pendant le transport, p.ex. par une personne, un véhicule ou un bateau fonctionnant au moyen de champs magnétiques ou électriques produits ou modifiés par l'objet ou par le dispositif de détection

Abrégé

A crop straw-based nitrogen-doped porous carbon material preparation method and an application, where straw is used as raw material, and straw powder and an alkali metal hydroxide are heated and stirred in an aqueous solution. The processing of lignin, cellulose, and hemicellulose by means of alkaline boiling allows the dense raw material structure to loosen, thereby changing the pore size distribution of the material. Subsequently, an activator potassium bicarbonate and a nitrogen source melamin are sequentially added, and stirring and mixing is performed, then after drying, high temperature pyrolysis, pickling, filtration, and drying steps are undergone, and a catalytic material is obtained. The nitrogen-doped porous carbon material possesses excellent oxygen reduction electrocatalytic performance, high cycling stability, strong methanol tolerance under all pHs, and can be used as a fuel cell cathode oxygen reduction reaction electrocatalytic material. The present invention is low-cost and environmentally friendly, usable raw materials are wide-ranging, the preparation process is simple and highly effective, the invention can be used for large scale production, and the invention has highly valuable practical application.

Classes IPC  ?

• C01B 32/348 - Composés métalliques
• C01B 32/324 - Préparation caractérisée par les matières de départ à partir de matières résiduelles, p.ex. pneumatiques ou liqueur noire de sulfite résiduaire
• B01J 27/24 - Composés de l'azote
• B01J 35/10 - Catalyseurs caractérisés par leur forme ou leurs propriétés physiques, en général solides caractérisés par leurs propriétés de surface ou leur porosité

Abrégé

A flexible dot-matrix electromyographic signal wireless acquisition system capable of achieving channel hot plugging. The flexible dot-matrix electromyographic signal wireless acquisition system comprises a plurality of flexible wireless data acquisition modules (10) and a main control unit (50). The plurality of flexible wireless data acquisition modules (10) can be completely attached to different positions of a human body, and acquire and send human body electromyographic signals; and the main control unit (50) is connected to an upper computer, and is used for receiving the human body electromyographic signals sent by the flexible wireless data acquisition modules (10), compositing an electromyographic image and sending the electromyographic image to the upper computer. According to the acquisition system, plugging and unplugging of an acquisition channel in an electrified state can be achieved, so that the reliability, rapid maintainability, redundancy, timely recovery capability on faults, and the like of the system are improved, and the adaptability and convenience of the acquisition system are improved; moreover, the number of the flexible wireless data acquisition modules (10) can be freely increased and decreased, so that the expansibility of the acquisition system and the comfort in the wearing process are improved; and on the premise of guaranteeing the acquisition quality, pertinence and controllability of electromyographic signal data acquisition are improved, and the flexibility and convenience of the acquisition system are increased.

Classes IPC  ?

• A61B 5/313 - Circuits d’entrée à cet effet spécialement adaptés à des utilisations particulières pour l’électromyographie [EMG]

Abrégé

Disclosed is an identity recognition method based on the heterogeneous separation of gender information in multimodal vein images. The identity recognition method depends on a double-layer unsupervised sparse feature learning model and an improved maximum inter-class variance binary feature coding model. The present invention relates to the field of computer vision, and comprises: autonomously constructing a vein image library; by means of unsupervised sparse feature learning, performing the heterogeneous separation of gender information for a human dorsal hand vein image; performing feature extraction on the basis of gender attribute determination; separately calculating a coding value and coding weight of an image binary feature; and then determining the similarity between feature vectors, performing identity recognition, etc. The identity recognition method based on the heterogeneous separation of gender information in multimodal vein images disclosed in the present invention comprises separating gender information from a vein image and using gender tags to guide different feature extraction policies for identity authentication, which improves the accuracy of identity recognition and can meet the requirements of various identification applications having high accuracy requirements.

Classes IPC  ?

• G06F 21/32 - Authentification de l’utilisateur par données biométriques, p.ex. empreintes digitales, balayages de l’iris ou empreintes vocales
• G06K 9/00 - Méthodes ou dispositions pour la lecture ou la reconnaissance de caractères imprimés ou écrits ou pour la reconnaissance de formes, p.ex. d'empreintes digitales