A coupling pin 20 is inserted through insertion holes of both end plates such that a head portion 20a thereof abuts an end plate 104 of one segment 1a and inclined surfaces S3 of notch portions 20c and 20d protrude from an end plate 105 of the other segment 1b. A clamp member 30 is disposed at a position where the inclined surface T2′ of a leg portion 30b faces the inclined surface S3 of the notch portion, and the leg portion of the clamp member is press-fitted into the notch portion such that the inclined surface thereof is brought into surface contact with the inclined surface of the notch portion. The end plates of both the segments are clamped and both the segments are coupled in the circumferential direction due to movement of the clamp member toward the segment end plate direction corresponding to the angle of inclination of the leg portion, the movement being generated by the press-fitting of the leg portion of the clamp member.
F16L 55/165 - Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe being inserted in the damaged section
F16L 9/22 - Pipes composed of a plurality of segments
F16B 2/14 - Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening using wedges
F16B 21/16 - Means without screw-thread for preventing relative axial movement of a pin, spigot, shaft, or the like and a member surrounding it; Stud-and-socket releasable fastenings without screw-thread by separate parts with grooves or notches in the pin or shaft
2.
APPARATUS AND METHOD FOR EVERTING A LINING MATERIAL
An eversion container 1 includes an opening section 2 having an opening 30 formed into which a lining material 60 is inserted and through which it can passes; and an eversion nozzle 12 to which one end of the lining material is airtightly attached. The eversion container is filled with an incompressible liquid 40 up to a predetermined level 40a beyond the opening of the opening section to form an airtightly sealed space above the liquid. Compressed gas is supplied to the airtightly sealed space to evert the lining material. A liquid supply pump 50 supplies the liquid in a liquid tack into the eversion container in compensation for the liquid flowing out of the opening section under the action of the compressed gas so that the liquid is kept at the predetermined level. The compressed gas can continuously evert the lining material without leaking through the opening section.
An in-pipe robot is provided with a rotary actuator 30 that rotates the drilling blade 21 in the circumferential direction of an existing pipe. A wheel body 50 provided with a traveling wheel 52 on both sides and a wheel body 70 provided with a traveling wheel 72 on both sides are supported between side frames 43 of a chassis via pins 54 and 74. The other ends of both the wheel bodies are rotatably coupled around an axle 63 of an intermediate wheel 65 as a pivot. When both the wheel bodies rotate, the intermediate wheels and the rotary actuator move above a horizontal line passing through the pin center. Each pin is disposed at the midpoint of a line connecting the center of the traveling wheel and the center of the intermediate wheel so that the rotation axis v1 of the rotary actuator coincides with the pipe center axis of the existing pipe.
B25J 9/12 - Programme-controlled manipulators characterised by positioning means for manipulator elements electric
B25J 9/14 - Programme-controlled manipulators characterised by positioning means for manipulator elements fluid
B25J 11/00 - Manipulators not otherwise provided for
B62D 57/028 - Vehicles characterised by having other propulsion or other ground-engaging means than wheels or endless track, alone or in addition to wheels or endless track with ground-engaging propulsion means, e.g. walking members having wheels and mechanical legs
F16L 55/44 - Constructional aspects of the body expandable
One cylindrical pipe is inserted into the hollow cylindrical portions of first and second holders made of hard plastic, and the other cylindrical pipe is inserted into the hollow semi-cylindrical portions. The first and second pipe holders are butted together at butt surfaces, respectively. The cylindrical pipe inserted into the butted hollow cylindrical portions is held in the hollow cylindrical portions using a clamping tool, and the cylindrical pipe inserted into a cylindrical portion that becomes hollow cylindrical by butting is held in the hollow semi-cylindrical portions using the clamping tool.
F16L 3/08 - Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
F16L 3/10 - Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing divided, i.e. with two members engaging the pipe, cable or protective tubing
F16B 2/08 - Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action using bands
E04G 7/14 - Clamps or clips for crossing members for clamping the members independently
Segments are linked in the circumferential direction to assemble a pipe unit. A link bolt is used to link the segments of the pipe unit in the longitudinal direction to assemble a rehabilitation pipe inside an existing pipe. An elastically deformable hollow cylindrical member having a tongue is attached to the link bolt between the inner plates. The outer diameter of the cylindrical member is larger than the insertion hole of the inner plate through which the link bolt can pass. This allows the link bolt to be prevented from falling out of the segment when the link bolt moves in the longitudinal direction due to gravity. When a force is applied to the tongue from below, the cylindrical member is elastically deformed and can be removed from the link bolt.
F16L 55/16 - Devices for covering leaks in pipes or hoses, e.g. hose-menders
F16L 55/163 - Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a ring, a band or a sleeve being pressed against the inner surface of the pipe
F16L 9/22 - Pipes composed of a plurality of segments
6.
Method for linking segments for rehabilitation pipe and linking tool
A linking pin made of elastic plastic having linking pin halves is used to link segments in the longitudinal direction to assemble a rehabilitation pipe. The linking pin includes a tubular portion having on its outer periphery surface first and second protrusions separated by a distance of twice the thickness of the side plate of the segment and a rear protruding portion that enlarges in diameter due to elasticity. The linking pin is inserted into one segment and the other segment so that the side plates of both the segments come between the first and second protrusions. The linking pin is then enlarged in diameter due to elasticity to fit the side plates between the first and second protrusions and link both the segments in the longitudinal direction. The linking pin that is enlarged in diameter can be reduced in diameter to unlink both the segments.
A drilling apparatus has a work robot mounting a drilling blade and moving inside a main pipe and a photodetector for detecting the contour of an opening image formed on the inner surface of a pipe lining material by illumination light. The opening image is scanned, and a two-dimensional image corresponding to the opening image is generated based on the contour points P0 to P8 detected by the photodetector for display on a display unit. The amount of positional deviation between the center of the two-dimensional image on the display unit and the axial center C of the rotary shaft of the drilling blade is calculated, and the pipe lining material is drilled by moving the drilling blade by the amount of positional deviation in a direction in which the positional deviation is eliminated.
B23B 41/00 - Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
B26D 1/44 - Cutting through work characterised by the nature or movement of the cutting member; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cup or like cutting member
B26D 3/00 - Cutting work characterised by the nature of the cut made; Apparatus therefor
B26D 5/02 - Means for moving the cutting member into its operative position for cutting
B26D 5/34 - Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member controlled by scanning a record carrier scanning being effected by a photosensitive device
B26F 1/16 - Perforating by tool or tools of the drill type
E03F 7/00 - Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
F16L 55/26 - Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means
B26D 5/00 - Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
Segments are linked in the circumferential length to assemble a pipe unit, which is linked to another pipe unit using a link bolt to install a rehabilitating pipe inside an existing pipe. An elastically deformable clip having a cylindrical cavity with a notch is attached to the link bolt between the inner plates of the segment. The clip grips the link bolt at the cavity thereof that is enlarged due to elastic deformation. When the link bolt is moved in the direction opposite the insertion direction, the clip that grips the link bolt hits the inner plate of the segment to limit the movement of the link bolt in the opposite direction and prevent the link bolt from falling out of the segment.
A segment for a rehabilitation pipe includes an inner surface plate having an inner circumferential surface, and side plates and end plates provided upright on a peripheral edge of the inner surface plate. The inner surface plate, the side plates, and the end plates are formed integrally from a plastic material. The segments are linked in a circumferential direction and in a pipe-length direction to install a segmental rehabilitation pipe inside an existing pipe. The end plates are provided with an insertion hole through which a linking member is inserted for linking the segments in the circumferential direction. Separately from the insertion hole, the end plates are further provided with an opening for passing therethrough a filler material injected into a space between the existing pipe and the rehabilitation pipe.
F16L 55/163 - Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a ring, a band or a sleeve being pressed against the inner surface of the pipe
F16L 55/1645 - Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a sealing material being introduced inside the pipe by means of a tool moving in the pipe
10.
Rehabilitation pipe and pipe rehabilitation method
A pipe unit for a rehabilitation pipe is used to rehabilitate an existing pipe. The pipe unit has segments mutually linked in a circumferential direction of the pipe unit, and at least one diameter expander for enlarging an inner diameter of the pipe unit. The diameter expander has a thickness in the circumferential direction of the pipe unit and is inserted between an adjacent pair of the mutually linked segments so as to be completely separated from each other by the diameter expander in the circumferential direction and by an amount corresponding to the thickness of the diameter expander.
F16L 55/18 - Appliances for use in repairing pipes
F16L 55/165 - Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe being inserted in the damaged section
F16L 55/1645 - Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a sealing material being introduced inside the pipe by means of a tool moving in the pipe
Segments are linked in the circumferential and pipe length directions to assemble a rehabilitating pipe inside an existing pipe in order to rehabilitate the existing pipe. A plurality of nuts are secured to the segments along the circumferential direction thereof. A fastening member having a screw part is provided which is screwed into the nut to fasten a first segment to a second segment to which the nut is secured, thereby linking the first and second segments in the pipe length direction thereof. The position of the nut in the first segment is offset as viewed in the circumferential direction from the nut position of the second segment. The arrangement of the fastening members and the nuts is staggered as viewed in its entirety. This allows the connection strength of the segments in the pipe length direction to be made uniform.
A flexible tubular lining material impregnated with a thermosetting resin is folded and bound with binding members to provide a reduced width. Two elastic and rigid strip members are inserted into loop members attached to the lining material and are removably attached so as to sandwich the lining material. During pipeline lining work, the lining material to which the strip members have been attached is first inserted into a lateral pipe from a main pipe. The strip members are then removed from the lining material so that the lining material may remain inside the pipeline. The strip members are extracted from the pipeline, and the lining material is then made to expand via application of pressure from the inside. While kept in contact with the inner peripheral surface of the pipeline, the lining material is heated in order to cure the thermosetting resin thereof.
A segment for a rehabilitating pipe is coupled to another segment in the circumferential and longitudinal directions of a rehabilitating pipe to rehabilitate an existing pipe. The segment has on one coupling surface a protruding part and a recessed part continuous with the protruding part and on another coupling surface a recessed part and a protruding part whose shapes respectively conform to the protruding part and the recessed part of one coupling surface. The protruding part and the recessed part of one coupling surface of one segment is brought into tight surface contact with the recessed part and protruding part of another coupling surface of another segment and interfitted thereto when one and another segments are mutually coupled in the circumferential and longitudinal directions of the rehabilitating pipe.
Segments are successively coupled in the circumferential direction and the vertical direction to provide a rehabilitating pipe that rehabilitates an exiting pipe such as a manhole extending in the vertical direction. The segments are coupled in the vertical direction by stacking segments on previously assembled segments. A gap between the existing pipe and the rehabilitating pipe is filled with a filler after completion of the assembly as a rehabilitating pipe. The filler is hardened to integrate the rehabilitating pipe with the existing pipe as a compound pipe. With such an arrangement, the rehabilitating pipe can be laid by a simple method because the segments can be stacked on previously assembled segments using the segments' own weight.
A spacer is constituted by overlapping on a first wedge-shaped member, whose upper surface is inclined at a prescribed angle, a second wedge-shaped member, whose lower surface is inclined at the same angle. This spacer is inserted in the gap between a inner wall surface of an existing pipe and the outer periphery of a rehabilitating pipe. Latching teeth are formed in the inclined surfaces of the first and second wedge-shaped members so that, when pressing the second wedge-shaped member to move it toward the first wedge-shaped member in the insertion direction, it cannot move in the direction the reverse of the insertion direction. Upon moving the second wedge-shaped member to the respective latch positions, the overall height of the spacer is successively increased in steps at a fine pitch, thus enabling the adjustment of the position of the rehabilitating pipe with respect to the existing pipe to be performed simply.
A rehabilitating pipe is assembled inside an existing pipe using segments to repair the existing pipe. A coupling member is inserted through a segment when it is coupled in the longitudinal direction to another segment coupled already, and the coupling member is joined to the coupling member of another segment already coupled. During joining the segment is clamped against another segment and both the segments are coupled in the longitudinal direction. Such steps are repeated to couple other segments to segments already coupled until the rehabilitating pipe is laid to a predetermined length.
patents
