Abstract

The invention relates to a wear protection cap for a bit holder arrangement, having at least two panel segments, located at an angle to one another, for covering surface regions of the bit holder arrangement, the panel segments being integrally joined to one another and the wear protection cap being configured as a cast metal part or as a forged metal part. With a wear protection cap of this kind, the service life of a bit holder arrangement can be substantially improved and machine stoppage time can be decreased.

IPC Classes  ?

• E21C 35/18 - Mining picks; Holders therefor
• E21C 35/19 - Means for fixing picks or holders

Abstract

In an automotive milling machine (1, 1a, 1b), comprising a machine frame (2), comprising a controller (3) for the travelling and milling operation, comprising a working drum (22), comprising a transport conveyor (12), where the transport conveyor (12) is slewable, relative to the machine frame (2), about a first axis (21) extending essentially horizontally under an elevation angle, and sideways about a second axis (23) extending orthogonally to the first axis (20) under a slewing angle, where the transport conveyor (12) discharges the milled material (14) onto a loading surface (15) of a transport vehicle (10) at a specified convey- ing speed, and where the controller (3) continuously controls positioning of the milled material (14) automatically via, as a minimum, the slewing angle of the transport conveyor (12), it is provided for the following features to be achieved: the controller (3) specifies and monitors limit values for a maximum permissible slewing angle range (36, 38) for slewing the transport conveyor (12) variable in accordance with the current operating situation.

IPC Classes  ?

• E01C 23/12 - Devices or arrangements for working the finished surface; Devices for repairing the surface of damaged paving for taking-up, tearing-up, or breaking-up paving
• E02F 7/00 - Equipment for conveying or separating excavated material

Abstract

In an automotive milling machine (1a, lb), comprising a machine frame (2), comprising a controller (3) for the travelling and milling operation, comprising a working drum (22), comprising a transport conveyor (12) slewable relative to the machine frame (2), where the transport conveyor (12) discharges the milled material onto a point of impingement (16) on a loading surface (15) of different transport vehicles (10), where the controller (3) comprises a detection and control unit (24) which monitors the alterable position of the loading surface (15) of the transport vehicle (10) by an image-recording system (28) comprising no less than one sensor (26) which continuously generates no less than one digital image (48) of, as a minimum, the loading surface (15), it is provided for the following features to be achieved: the detection and control unit (24) comprises an analysis device (42) which detects faults or errors in the image (48) generated by the no less than one sensor (26).

IPC Classes  ?

• E01C 23/12 - Devices or arrangements for working the finished surface; Devices for repairing the surface of damaged paving for taking-up, tearing-up, or breaking-up paving
• E02F 7/00 - Equipment for conveying or separating excavated material

Abstract

In an automotive milling machine (1), comprising a machine frame (2), comprising a controller (3) for the travelling and milling operation, comprising a working drum (22), comprising a transport conveyor (12) for discharging the milled material (14) milled off by the working drum (22) onto a loading surface (15) of a transport vehicle (10) comprising a rear wall (60), where the transport conveyor (12) is slewable, relative to the machine frame (2), about a first axis (21) extending essentially horizontally under an elevation angle, and sideways about a second axis (23) extending orthogonally to the first axis (20) under a slewing angle, it is provided for the following features to be achieved: a detection device (50) is arranged on the bottom side of the transport conveyor (12), where said detection device (50) is used to initiate an activation signal in case of the transport conveyor (12) approaching an object, in particular, the rear wall (60) of the loading surface (15).

IPC Classes  ?

• E01C 23/088 - Rotary tools, e.g. milling drums
• B65G 67/08 - Loading land vehicles using endless conveyors
• E01C 23/06 - Devices or arrangements for working the finished surface; Devices for repairing the surface of damaged paving
• E01C 23/12 - Devices or arrangements for working the finished surface; Devices for repairing the surface of damaged paving for taking-up, tearing-up, or breaking-up paving

Abstract

A system is provided for determining a volume of material milled, or a surface area milled, by a construction machine having a milling drum. The volume of material milled is determined as a function of a cross-sectional area of material to be milled in front of the milling drum and a distance traveled by the construction machine while actively milling. The cross-sectional area is determined in part by direct machine observation of one or more profile characteristics of a ground surface in front of the milling drum. The surface area milled is determined as a function of the width of the area to be milled in front of the milling drum and a distance traveled by the construction machine while actively milling.

IPC Classes  ?

• G07C 3/00 - Registering or indicating the condition or the working of machines or other apparatus, other than vehicles
• E02F 3/26 - Safety or control devices
• E02F 3/84 - Drives or control devices therefor
• E02F 5/08 - Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with digging wheels turning round an axis
• E02F 5/14 - Component parts for trench excavators, e.g. indicating devices
• E02F 9/26 - Indicating devices
• E21C 31/00 - Driving means incorporated in machines for slitting or completely freeing the mineral from the seam
• G01S 17/08 - Systems determining position data of a target for measuring distance only
• G01S 17/48 - Active triangulation systems, i.e. using the transmission and reflection of electromagnetic waves other than radio waves

Abstract

In an automotive milling machine (1a, 1b), with a height-adjustable machine frame (2), with a controller (3) for the travelling and milling operation, with a working drum, with a slewable transport conveyor device arranged in front of or behind the working drum as seen in the direction of travel of the milling machine (1a,1b), where the last or single transport conveyor of the transport conveyor device (12) as seen in the direction of transport is slewable sideways, relative to the machine frame (2), about an essentially vertical axis (23) under a slewing angle, and about an axis (21) orthogonal to the axis (23) under an elevation angle, and where the transport conveyor (12) discharges the milled material at a specified conveying speed onto a point of impingement (16) on a loading surface (15) of a transport vehicle (10), it is provided for the following features to be achieved: the controller (3) comprises a detection and control system (24) which continuously locates the alterable position of the loading surface (15) of the transport vehicle (10) and of the transport conveyor (12) relative to the machine frame (2), or the alterable position of the loading surface (15) of the transport vehicle (10) relative to the transport conveyor (12), and continuously controls positioning of the point of impingement (16) of the milled material (14) automatically via the slewing angle and/or the elevation angle and/or the conveying speed of the transport conveyor (12) in such a way that the discharged milled material (14) impinges within the loading surface (15).

IPC Classes  ?

• E01C 23/088 - Rotary tools, e.g. milling drums
• B60P 1/36 - Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading using endless chains or belts thereon
• B65G 67/08 - Loading land vehicles using endless conveyors
• G05D 3/12 - Control of position or direction using feedback

Abstract

An adaptive advance system for a construction machine (10) senses the reaction forces applied by the ground surface (14) to a milling drum (12), and in response to the sensed changes in those reaction forces controls the motive power applied to an advance drive (40,42) of the machine (10) or the slowing of a rate of lowering the rotating milling drum (12). Early and rapid detection of such changes in reaction forces allow the control system to aid in preventing lurch forward events or the lurch forward or backward events respectively of the construction machine (10).

IPC Classes  ?

• E02F 9/20 - Drives; Control devices
• E01C 23/088 - Rotary tools, e.g. milling drums

Abstract

The invention relates to a bit holder having an insertion projection and having a holding projection having a bit receptacle, the insertion projection comprising a bearing segment and the holding projection comprising a supporting segment. In order to allow the bit holder to be braced in permanent and stable fashion with respect to a base part, provision is made according to the present invention that the supporting segment and/or the bearing segment comprise two supporting surfaces and bearing surfaces, respectively, arranged at an angle to one another; and that the longitudinal center axis of the bit receptacle and the longitudinal axis of the insertion projection enclose an obtuse angle.

IPC Classes  ?

• E21C 35/19 - Means for fixing picks or holders
• E21C 35/193 - Means for fixing picks or holders using bolts as main fixing elements

Abstract

The invention relates to a bit holder having an insertion projection and having a holding projection, the holding projection comprising a bit receptacle, and the holding projection protruding at least locally from or beyond the insertion projection in the tool feed direction. A bit holder of this kind is designed in service-life-optimized fashion by the fact that the holding projection comprises a supporting segment having a rigid, shaped--on supporting surface that is arranged at least locally in front of the insertion projection in the feed direction. The invention further relates to a base part for receiving an aforementioned bit holder.

IPC Classes  ?

• E21C 35/19 - Means for fixing picks or holders
• E21C 35/193 - Means for fixing picks or holders using bolts as main fixing elements

Abstract

The invention provides an automotive machine for producing carriageways by stabilizing insufficiently stable soils or by recycling road surfaces. The machine comprises a machine chassis supported by a running gear, a working drum mounted to pivot in relation to the machine chassis, the shaft of the working drum being mounted in pivoting arms and running transversely to the direction of travel, a combustion engine supported by the machine chassis with at least one output shaft for the drive power required for driving the working drum, whereby at least one mechanical power transmission device transfers the drive power from the output shaft to the working drum. The combustion engine is arranged in a fixed manner at the machine chassis between the pivoting arms. The at least one mechanical power transmission device, together with the working drum, can pivot about the axis of the output shaft of the combustion engine.

IPC Classes  ?

• E01C 23/088 - Rotary tools, e.g. milling drums
• E01C 23/06 - Devices or arrangements for working the finished surface; Devices for repairing the surface of damaged paving