Segments each having side plates 102 and 103 and a plurality of inner plates 106 and 107 inside the side plates are coupled in the circumferential direction and in the longitudinal direction to construct a rehabilitation pipe inside an existing pipe. A plastic nut retainer 50 for retaining therein a nut 60 engaged with a coupling bolt 11 is attached between the side plate 102 on one side of the segment 1b and the inner plate 106 adjacent thereto. The coupling bolt is screwed into the nut co couple the segments 1a and 1b in the longitudinal direction due to clamping by screwing. A groove is formed in the nut retainer, and the nut is press-fitted into the groove and retained in the nut retainer.
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
A coupler having elastically deformable claws 32, 33 is fixed to the side plate 103 of one segment 1a. The side plate 103 of the one segment 1a and the side plate 102 of the other segment 1b are butted against each other, and the claws of the coupler are passed through the side plate of the other segment to protrude into the segment. The claws of the coupler protruding into the other segment are elastically deformed by a diameter expansion pin 11 to expand the diameter of the claws 32 and 33. The claws of the coupler whose diameter has been expanded presses the side plate of the other segment against the side plate of the one segment to couple both the segments in the longitudinal direction.
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 itStud-and-socket releasable fastenings without screw-thread by separate parts with grooves or notches in the pin or shaft
The present invention comprises: a plurality of flexible substrates 10 which are arranged at equal intervals in a spiral on a cylinder surface and in which a plurality of light sources are disposed; and the same number of flexible substrates 20 which are arranged in a reverse spiral shape. The two substrates are arranged such that respective one end parts thereof intersect and respective other end parts thereof each intersect with a corresponding other end part in accordance with the spiral shape. The two substrates are rotatably connected at intersection positions at both ends thereof and at other intersection positions that intersect in accordance with the spiral shape.
According to the present invention, a plurality of separation pieces 10c are formed by folding one end of a tubular resin absorbing material and cutting the tip part thereof to be separated into petals. The separation pieces are arranged in a ring-shaped recessed part formed in a lower flange 30 made of a thermoplastic resin. An upper flange 20 made of a thermoplastic resin is closely attached to the lower flange, and the separation pieces are held between the upper flange and the lower flange. The upper flange, the lower flange, and the separation pieces are bonded by an adhesive 40 applied to the recessed part of the lower flange to manufacture an integrated branch pipe lining material.
A connection implement having elastically deformable claws 32, 33 is fixed to a side plate 103 of one segment 1a. The side plate 103 of one segment 1a and a side plate 102 of another segment 1b are butted against each other, and the claws of the connection implement pass through the side plate of the other segment and protrude into the segment. The claws of the connection implement protruding into the other segment are elastically deformed by a diameter expansion pin 11, and the diameter of the claws 32, 33 are expanded. The side plate of the other segment is pressed against the side plate of the one segment by the claws, of the connection implement, having an expanded diameter, and both segments are connected in the pipe length direction.
In the present invention, a rehabilitated pipe is constructed within an existing pipe by connecting, in a circumferential direction and a pipe length direction, segments having side plates 102, 103 and a plurality of inner plates 106, 107 on the inside of both side plates. A plastic nut retaining member 50, in which a nut 60 that threadedly engages with a connection bolt 11 is retained, is attached between the side plate 102 and the inner plate 106 adjacent thereto on one side of a segment 1b. The connection bolt is screwed into the nut, and segments 1a, 1b are connected in the pipe length direction as a result of tightening by such screwing. A groove is formed in the nut retaining member, and the nut is press-fitted into the groove so as to be retained by the nut retaining member.
A connecting pin 20 is inserted through insertion holes of both an end plate 104 of one segment 1a and an end plate 105 of the other segment 1b such that a head portion 20a of the connecting pin 20 is brought into abutment with the end plate 104 and an inclined surface S3 of each notch portion 20c, 20d projects from the end plate 105. A clamp member 30 is arranged at a position where an inclined surface T2' of a leg portion 30b thereof faces the inclined surface S3 of the notch portion, and the leg portion of the clamp member is press-fitted into the notch portion so as to bring the inclined surface of the leg portion and the inclined surface of the notch portion into surface contact with each other. Due to the movement of the clamp member toward the segment end plate direction, the movement being caused by the press-fitting of the leg portion of the clamp member and corresponding to the inclination angle of the leg portion, the end plates of the two segments are fastened to couple the two segments to each other in the circumferential direction.
F16L 1/00 - Laying or reclaiming pipesRepairing or joining pipes on or under water
E03F 3/04 - Pipes or fittings specially adapted to sewers
E03F 7/00 - Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppageEmptying cesspools
F16B 21/16 - Means without screw-thread for preventing relative axial movement of a pin, spigot, shaft, or the like and a member surrounding itStud-and-socket releasable fastenings without screw-thread by separate parts with grooves or notches in the pin or shaft
F16L 1/038 - Laying or reclaiming pipes on land, e.g. above the ground in the ground the pipes being made in situ
F16L 9/22 - Pipes composed of a plurality of segments
F16L 55/18 - Appliances for use in repairing pipes
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
An inversion vessel 1 which: has an opening section 50 located in the lower section thereof and provided with an opening through which it is possible for a lining material to pass 20; and is equipped with an inversion nozzle 4 in the upper section thereof which is filled with a liquid 26. The liquid discharged into a liquid tank 28 from the opening section as a result of the action of a compressed gas for inverting the lining material is returned to the inversion vessel by a pump 42, and the lining material is continuously inverted. The opening section is provided with a sealing member 83 having an opening formed therein through which the lining material passes, and is provided with a sealing valve 92 which is displaced as a result of the fluid pressure of the liquid discharged from the sealing member. When a small-diameter attachment tool connected to the terminal end of the lining material passes through the sealing member, the discharge flow of the liquid from the sealing member increases, the sealing valve moves in the closing direction, and the sealing function is maintained.
17 - Rubber and plastic; packing and insulating materials
37 - Construction and mining; installation and repair services
41 - Education, entertainment, sporting and cultural services
Goods & Services
Plastic pipe lining materials; pipe joint compounds of
plastics that can be linked together to assemble a
rehabilitation pipe inside an existing pipeline. Repair of pipelines; rehabilitation of pipes using plastic
pipe lining materials. Organization of entertainment events excluding movies,
shows, plays, musical performances, sports, horse races,
bicycle races, boat races and auto races.
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
14.
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.
According to the present invention, compressed gas from an air compressor 56 is supplied into an inversion container 1, and an inversion pressure of a lining material 60 is formed by a gas pressure due to the compressed gas. A liquid 40 is caused to overflow from an inversion nozzle 12 and is supplied into the lining material 60, and the inversion pressure is formed by the pressure of the liquid. The inversion pressure due to the gas pressures is formed while supplying the liquid into the lining material, and the lining material is inverted by the pressures of the gas and the liquid. Even when the total length of the lining material to be inverted is increased, it is possible to effectively perform the inversion by the compressed gas.
In this invention, a tubular resin-absorbing material 13 at a terminal portion of a pipe lining material 10 has attached thereto a pull belt 14 that pulls a hot water hose 18 and extends from the pipe lining material terminal portion to the exterior. The pull belt and the terminal portion of the pipe lining material are covered by a seal tube 17 whereof the end portion 17a on the pull belt side is open, and the end portion 17b on other side is heat-welded onto the pipe lining material terminal portion. The tubular resin absorbing material 13 whereto the pull belt has been attached is woven in the width direction with a rope 15, which seals the terminal portion of the tubular resin absorbing material.
17 - Rubber and plastic; packing and insulating materials
37 - Construction and mining; installation and repair services
41 - Education, entertainment, sporting and cultural services
Goods & Services
Plastic pipe lining materials, namely, plastic interior linings that can be linked together to assemble a rehabilitation pipe inside an existing pipe or pipeline; pipe joint compounds of plastics that can be linked together to assemble a rehabilitation pipe inside an existing pipeline Repair of pipelines; rehabilitation of pipes using plastic pipe lining materials Organization of entertainment events excluding movies, shows, plays, musical performances, sports, horse races, bicycle races, boat races and auto races, namely, sewer repair or rehabilitation exhibitions
In the present invention, an inversion container 1 comprises: an opening part 2 in which an opening 30, that a lining material 60 is inserted into and can pass through, is formed; and an inversion nozzle 12 to which one end of the lining material is attached in an airtight manner. The inversion container is filled with an incompressible liquid 40 up to a prescribed level 40a that is above the opening of the opening part, and an airtight sealed space is formed above the liquid. A compressed gas is fed into the airtight sealed space, and the lining material is inverted. In order to keep the liquid in the inversion container at the prescribed level, a liquid supply pump 50 feeds a liquid in a liquid tank into the inversion container, thereby supplementing the liquid that is flowing out from the opening part as a result of being acted on by the compressed gas. The lining can be continuously inverted without leakage of the compressed gas from the opening part.
In the present invention, an infrared camera (120) is mounted on a moving body that moves in a main pipe (10) in a direction in which the main pipe extends. The infrared camera captures, from the main-pipe side, an image of a pipe lining material (12) which is cooled or heated by a heating medium (140) placed in a branch pipe (11). A thermal image obtained by the infrared camera is displayed, as a moving image, in real time, on a display on a working truck (14) on the ground above. A drilling blade (21) is positioned at a branch pipe opening (11a) according to a command generated on the basis of the thermal image transmitted to the ground above.
According to the present invention, one cylindrical pipe 51 is inserted into hollow cylindrical sections 21, 31 of first and second holding bodies 20, 30 formed of hard plastic, and the other cylindrical pipe 52 is inserted into hollow semicircular cylinder sections 22, 32. The first and second pipe holding bodies are combined at respective abutting surfaces 23, 33. The cylindrical pipe 51 inserted into the combined hollow cylindrical section is held in the hollow cylindrical section by using a fastener 60, and the cylindrical pipe 52 inserted into the cylindrical section that was combined to become a hollow cylinder is held in the hollow semicircular section by using the fastener 60.
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
F16L 3/00 - Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
E04G 7/14 - Clamps or clips for crossing members for clamping the members independently
Provided is a pipe robot in which a rotary actuator (30) for rotating a boring blade (21) in the circumferential direction of an existing pipe is installed. A wheel body (50), on both sides of which a travel wheel (52) is provided, and a wheel body (70), on both sides of which a travel wheel (72) is provided, are supported by pins (54, 74) between chassis side frames (43). The other ends the wheel bodies are connected so as to be capable of rotating, with a wheel shaft (63) of an intermediate wheel (65) serving as a pivot point. When both wheel bodies rotate, the intermediate wheel and the rotary actuator move above a horizontal line passing through the pin center. The pins are arranged at the center point of a line connecting the centers of the travel wheels and the intermediate wheel, so that the rotational axis (v1) of the rotary actuator coincides with the pipe center axis of the existing pipe.
A plurality of spacers 50, 70 in which first and second wedge-shaped members are overlaid are disposed around the entire circumference between a renewal pipe 40 and an existing pipe 21 with a thickness corresponding to a gap between the renewal pipe and the existing pipe. The first wedge-shaped members of the spacers 70 disposed at the bottom of the renewal pipe or in the vicinity of the bottom of the renewal pipe are held by a holding member attached to a segment 1 of the renewal pipe, in such a way as to be capable of sliding in the length direction of the pipe. The first wedge-shaped members are held by the holding member in such a way that movement in a direction orthogonal to the length direction and the circumferential direction of the pipe is restricted, preventing the first wedge-shaped members from falling out from the segment under their own weight.
A drilling device is equipped with: a hydraulic motor 27 for rotating a drilling blade 30 for drilling a pipe lining material 13; laser light sources 40 and 41 for emitting laser beams parallel to the rotational axis of the drilling blade, from positions near the drilling blade toward the pipe lining material, and forming laser spots on the inner circumferential surface of the pipe lining material; an electric motor 28 for rotating the laser light sources coaxially with the rotational axis of the drilling blade; and a camera 50 for capturing an image of the trajectory of the laser spots rotating along the inner circumferential surface of the pipe lining material, and a bright section formed on the inner circumferential surface of the pipe lining material by illumination light from a branch pipe. Positioning of the drilling blade is carried out such that the image of the trajectory and the image of the bright section match.
This perforator has: an operating robot 20 for loading a perforating blade 28 and moving inside a main pipe; and a light detector 40 for detecting the contours of an opening part image 34 formed on an inner surface of a pipe lining material by illumination light. A two-dimensional image corresponding to the opening part image is generated and displayed on a display device on the basis of contour points P0 to P8 detected by the light detector 40 by scanning the opening image. The amount of positional deviation between the center of the two-dimensional image on the display device and the axial center C of a rotational shaft of the perforating blade 28 is calculated, the perforating blade is moved by the amount of positional deviation thereof in a direction in which the positional deviation will be eliminated, and the pipe lining material is perforated.
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
B26D 1/44 - Cutting through work characterised by the nature or movement of the cutting memberApparatus or machines thereforCutting 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 madeApparatus therefor
B26D 5/02 - Means for moving the cutting member into its operative position for cutting
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 stoppageEmptying cesspools
F16L 55/26 - Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means
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.
37 - Construction and mining; installation and repair services
41 - Education, entertainment, sporting and cultural services
Goods & Services
Plastic pipe lining materials; plastic pipeline repairing
materials that are used to assemble a rehabilitation pipe
inside an existing pipeline. Repair of pipelines; rehabilitation of pipes using plastic
pipe lining materials. Organization of entertainment events excluding movies,
shows, plays, musical performances, sports, horse races,
bicycle races, boat races and auto races.
Prior to lining a main pipe, a marker configured as a receiver coil (33) is set at the center (12b) of a branch pipe opening or a position separated a prescribed distance (S) from said center. On an intra-pipe robot (20), a rotatable perforating blade (31) for perforating main pipe lining material (13) that is blocking the branch pipe opening and a transmission coil (40) for detecting the position of the marker are installed coaxially or separated by the prescribed distance (S). After the main pipe is lined, the perforating blade is moved in conjunction with the transmission coil in the longitudinal direction of the main pipe and in the circumferential direction of the main pipe to perforate the main pipe lining material at the position at which the electromagnetic bonding of the two coils is maximal. Since the center of rotation of the perforating blade coincides with the center of the branch pipe opening at the position at which the electromagnetic bonding of the two coils is maximal, it is possible to perforate the main pipe lining material accurately to coincide with the branch pipe opening.
Provided is a signal transmission flat cable that is capable of suppressing a decrease in signal transmission characteristics in a high-frequency frequency band. An upper electric insulation thin film layer 4 and a lower electric insulation thin film layer 5 are provided, whereby signal conductors 1, 2 and an electric insulation base body 3 are covered from the top and the bottom in the cable thickness direction. A protective insulation layer 8 comprises a metal layer 6 and an electric insulation plastic layer 7, and surrounds the outer periphery of the upper and lower electric insulation thin film layers in such a manner as to position the metal layer on the inside, and the electric insulation plastic layer on the outside. Grounding of the cable is achieved through the metal layer 6 of the protective insulation layer 8.
Protruding sections (44) of male connecting pins (40) fixed on one side plate (103) of a segment (1a) are fitted into fitting sections (25) of female connecting pins (20) fixed between the other side plate (102) and the adjacent side plate (106) of a segment (1b) that is to be connected to the first segment. Each segment is successively connected in the pipe length direction so that the respective side plates (102, 103) of the various segments abut against each other to assemble a regenerated pipe inside an existing pipe. In the fitting sections (25) of the female connecting pins (20), multiple locking parts (24) that allow the male connecting pins (40) to move in the insertion direction but prohibit movement thereof in the direction opposite to the insertion direction are formed. When the male connecting pins (40) are inserted and fitted into the female connecting pins (20), the male connecting pins lock with one of the locking parts (24), making movement in the reverse direction impossible and connecting the various segments securely in the pipe length direction.
A signal transmission flat cable is provided with an upper electrically-insulating thin film layer (4) and a lower electrically-insulating thin film layer (5) to cover a signal conductor (1), ground conductors (2, 2'), and an electrically-insulating base body (3) from the top and bottom in the thickness direction of a cable. A protective shielding layer (8) is constituted by a metal layer (6) and an electrically-insulating plastic layer (7), and surrounds the outer periphery of the upper and lower electrically-insulating thin film layers such that the metal layer is located inside and the electrically-insulating plastic layer is located outside. The protective shielding layer surrounds the outer periphery of the upper and lower electrically-insulating thin film layers with one rim portion (10) and the other rim portion (11) along the longitudinal direction of the cable brought into contact with each other. An abutting part (12), formed by bringing both rim portions of the protective shielding layer in contact with each other, is located above the ground conductor (2).
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
33.
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 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.
