Pipeline damage non-excavation type repairing device

Abstract

The utility model relates to the technical field of pipeline repair, in particular to a pipeline damage non-excavation type repair device which comprises a supporting assembly, a cleaning assembly, a repair assembly and a connecting pipe, the supporting assembly comprises two sets of supporting parts, the connecting pipe is arranged between the two sets of supporting parts, the cleaning assembly comprises a cleaning part, two sets of adjusting parts and a telescopic part, and the telescopic part is arranged between the two sets of adjusting parts. The two adjusting parts are symmetrically arranged at the two ends of the connecting pipe, the telescopic part is arranged between the two adjusting parts, the cleaning parts are arranged on the peripheries of the two adjusting parts, the telescopic part comprises protection shells and a bidirectional telescopic rod, the two telescopic ends of the bidirectional telescopic rod are each provided with one protection shell, and openings of the two protection shells are opposite and make contact or are separated. The repairing assembly is arranged on the inner sides of the two protective shells, the repairing assembly can be protected, smudginess or accumulated liquid making contact with the inner wall of a pipeline can be reduced, meanwhile, the pipe wall is cleaned, the repairing effect is better, and the service life of repairing materials is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline repair technical field, specifically disclose a pipeline breakage nonexcavation type repair device. BACKGROUND

[0002] With the development of society, the water supply, drainage and heat system of city mostly rely on underground pipeline operation, after long time use, the inner wall of pipeline is prone to rust or breakage phenomenon, need to repair the pipeline.

[0003] The pipeline repair in prior art includes two technologies of outer repair and inner repair, since the pipeline is deeply buried underground, the outer repair technology needs to excavate the ground, the repair process is more cumbersome, and the residents are easily affected to travel, the inner repair technology of nonexcavation mainly relies on sending the repair device into the pipeline to repair by using special repair material, but the inner wall of pipeline may still have liquid or dirt, the repair effect is poor by directly repairing, the service life is shorter, and the general repair material is exposed outside the repair device, and is easily stuck with dirt. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a pipeline breakage nonexcavation type repair device to solve the problems in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: a pipeline breakage nonexcavation type repair device, including support assembly, cleaning assembly, repair assembly and connecting pipe, the support assembly includes two groups of support parts, the connecting pipe is arranged between the two groups of support parts, the repair assembly is sleeved in the middle part of the connecting pipe, the cleaning assembly includes cleaning part, adjusting part and telescopic part, the adjusting part is provided with two groups, the two groups of adjusting parts are symmetrically arranged at the two ends of the connecting pipe, the telescopic part is arranged between the two groups of adjusting parts, a group of cleaning parts is arranged on the outer periphery of the two groups of adjusting parts, the telescopic part includes protective shell and bidirectional telescopic rod, the protective shell is provided with two, the two telescopic ends of the bidirectional telescopic rod are fixedly connected with the inner side of a protective shell respectively, the two protective shells are sleeved on the connecting pipe and are oppositely arranged in the opening, the two protective shells are in contact or separation, and the repair assembly is arranged between the two protective shells and located in the inner side of the protective shell.

[0006] Further, the cleaning part includes wide slot cleaning block and narrow slot cleaning block, the wide slot cleaning block and the narrow slot cleaning block are all provided with three and are all arc-shaped, and are coaxial with the connecting pipe, three wide slot cleaning blocks and three narrow slot cleaning blocks are fixedly arranged at the one end of six moving rods of the same adjusting part away from the axis of the connecting pipe respectively, three wide slot cleaning blocks and three narrow slot cleaning blocks are sequentially and spacedly arranged, and the end of the narrow slot cleaning block is inserted and slidably connected with the end of the wide slot cleaning block.

[0007] Further, the adjusting part comprises a moving rod and a limiting plate, the limiting plate is coaxially arranged with the connecting rod, the limiting plate is located in the connecting pipe and is fixedly connected with the connecting pipe, six slide grooves are radially arranged on the limiting plate, the six slide grooves are uniformly distributed in the circumferential direction, the moving rod is slidably connected with the connecting pipe through the connecting pipe, and the moving rod is slidably connected with the slide groove.

[0008] Further, the adjusting part further comprises a large gear and a small gear, the small gear is arranged on one side of the large gear and is in meshing connection with the large gear, the large gear is rotatably connected with the middle part of the limiting plate, the small gear is rotatably connected with the limiting plate, one end of the moving rod arranged in the slide groove is provided with a limiting shaft, the other end of the moving rod is provided with a cleaning part, six arc-shaped moving grooves are uniformly arranged on the large gear in the circumferential direction, and the moving grooves correspond to the limiting shaft one by one.

[0009] Further, the supporting part comprises an adjusting gear, a matching gear and a shell, the shell is coaxially arranged with the connecting pipe and is fixedly connected with the end of the connecting pipe, the adjusting gear and the matching gear are arranged in the shell, the adjusting gear is coaxially arranged with the shell and is rotatably connected with the shell, the matching gear is provided with four, the four matching gears are uniformly arranged around the adjusting gear and are in meshing connection with the adjusting gear, and the matching gears are rotatably connected with the shell.

[0010] Further, the supporting part further comprises a movable rod and a moving wheel, the matching shaft is arranged on the matching gear, the movable rod and the moving wheel are both provided with four, a long circular through hole is arranged at one end of the movable rod and is located in the shell, the other end of the movable rod penetrates out of the shell and is slidably connected with the shell, one end of the movable rod penetrating out of the shell is rotatably connected with the moving wheel, and the matching shaft penetrates into the through hole and is slidably connected with the through hole.

[0011] Further, the supporting part further comprises a movable rod and a moving wheel, the matching shaft is arranged on the matching gear, the movable rod and the moving wheel are both provided with four, a long circular through hole is arranged at one end of the movable rod and is located in the shell, the other end of the movable rod penetrates out of the shell and is slidably connected with the shell, one end of the movable rod penetrating out of the shell is rotatably connected with the moving wheel, and the matching shaft penetrates into the through hole and is slidably connected with the through hole.

[0012] Further, the supporting part further comprises a movable rod and a moving wheel, the matching shaft is arranged on the matching gear, the movable rod and the moving wheel are both provided with four, a long circular through hole is arranged at one end of the movable rod and is located in the shell, the other end of the movable rod penetrates out of the shell and is slidably connected with the shell, one end of the movable rod penetrating out of the shell is rotatably connected with the moving wheel, and the matching shaft penetrates into the through hole and is slidably connected with the through hole.

[0013] Further, the cleaning assembly further comprises a second connecting shaft and a second motor, the second connecting shaft and the second motor are arranged in the connecting pipe, the second motor is arranged on one side of one of the limiting plates, the two ends of the second connecting shaft are rotatably connected with the two limiting plates respectively, one end of the second connecting shaft is fixedly connected with the output shaft of the second motor through the corresponding limiting plate, and the two ends of the second connecting shaft are fixedly connected with the pinion gears of the two adjusting parts respectively.

[0014] Compared with the prior art, the pipeline damage non-excavation repair device has the following beneficial effects:

[0015] The pipeline damage non-excavation repair device has the following beneficial effects:

[0016] The pipeline damage non-excavation repair device has the following beneficial effects:

[0017] The pipeline damage non-excavation repair device has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The pipeline damage non-excavation repair device has the following beneficial effects:

[0019] Figure 2 The pipeline damage non-excavation repair device has the following beneficial effects:

[0020] Figure 3 The pipeline damage non-excavation repair device has the following beneficial effects:

[0021] Figure 4 The cleaning assembly structure schematic view is described in the utility model embodiment.

[0022] Figure 5 The adjusting part structure schematic view is described in the utility model embodiment.

[0023] Figure 6 The cleaning assembly partial structure schematic view is described in the utility model embodiment.

[0024] Figure 7 The Figure 6 The enlarged schematic view of A in the middle;

[0025] Figure 8 The repairing assembly partial cross section structure schematic view is described in the utility model embodiment.

[0026] In the figure: 1, support assembly; 11, support part; 111, adjusting gear; 112, matching gear; 1121, matching shaft; 113, movable rod; 114, moving wheel; 115, shell; 12, first connecting shaft; 13, first motor; 2, cleaning assembly; 21, cleaning part; 211, wide slot cleaning block; 212, narrow slot cleaning block; 22, adjusting part; 221, moving rod; 2211, limiting shaft; 222, large gear; 2221, moving groove; 223, small gear; 224, limiting plate; 2241, sliding groove; 23, telescopic part; 231, protective shell; 2311, connecting block; 232, bidirectional telescopic rod; 24, second connecting shaft; 25, second motor; 3, repairing assembly; 31, support ring; 32, repairing air bag; 4, connecting pipe; 41, movable window. DETAILED DESCRIPTION

[0027] The technical solutions in the utility model embodiments will be clearly and completely described below with reference to the drawings in the utility model embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0028] In the following description of the utility model, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation. The term "connection" only means the connection between devices, and has no special meaning.

[0029] In addition, the technical field and installation method involved in the embodiments of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0030] The specific implementation is as follows Figures 1-8 As shown in the figure, a pipeline damage trenchless repair device, including support assembly 1, cleaning assembly 2, repair assembly 3 and connecting pipe 4, the support assembly 1 includes two groups of support parts 11, connecting pipe 4 is arranged between two groups of support parts 11, repair assembly 3 is sleeved in the middle of connecting pipe 4, cleaning assembly 2 includes cleaning part 21, adjusting part 22 and telescopic part 23, adjusting part 22 is provided with two groups, two groups of adjusting part 22 are symmetrically arranged at both ends of connecting pipe 4, two groups of adjusting part 22 are located between two groups of support parts 11, telescopic part 23 is arranged between two groups of adjusting part 22, two groups of adjusting part 22 are provided with a group of cleaning part 21, the telescopic part 23 includes protective shell 231 and bidirectional telescopic rod 232, the protective shell 231 is provided with two, the two telescopic ends of bidirectional telescopic rod 232 are fixedly connected with the inner side of one protective shell 231 respectively, two protective shells 231 are sleeved on connecting pipe 4 and are oppositely arranged, the side of the opening of two protective shells 231 is contacted or separated, repair assembly 3 is arranged between two protective shells 231 and is located in the inner side of protective shell 231, bidirectional telescopic rod 232 is provided with two, two bidirectional telescopic rods 232 are respectively located at both sides of connecting pipe 4, when the two telescopic ends of bidirectional telescopic rod 232 are contracted, two protective shells 231 are contacted and can protect repair assembly 3, reduce the dirt in the contact pipeline, protect the repair material, when the two telescopic ends of bidirectional telescopic rod 232 are extended, make two protective shells 231 move to both sides of connecting pipe 4 respectively, simultaneously drive two groups of adjusting part 22 to move to both sides of connecting pipe 4 respectively, make two groups of cleaning part 21 move from the middle of connecting pipe 4 to both sides, can clean the pipe wall, make the repair effect better, improve the service life of repair material.

[0031] The support part 11 comprises an adjusting gear 111, a matching gear 112, a movable rod 113, a moving wheel 114 and a shell 115, the shell 115 is coaxially arranged with the connecting pipe 4 and fixedly connected with the end of the connecting pipe 4, the adjusting gear 111 and the matching gear 112 are arranged in the shell 115, the adjusting gear 111 is coaxially arranged with the shell 115 and rotationally connected with the shell 115, the matching gear 112, the movable rod 113 and the moving wheel 114 are all provided with four, the four matching gears 112 are uniformly arranged around the adjusting gear 111 and all are meshingly connected with the adjusting gear 111, the matching gear 112 is rotationally connected with the shell 115, the matching gear 112 is provided with a matching shaft 1121 near the edge position, the movable rod 113 is T-shaped, a long circular through hole is formed in one end of the movable rod 113 and located in the shell 115, the other end penetrates out of the shell 115 and is slidingly connected with the shell 115, the one end of the movable rod 113 penetrating out of the shell 115 is rotationally connected with the moving wheel 114, the matching shaft 1121 penetrates in the through hole and is slidingly connected with the through hole, when the adjusting gear 111 rotates, the four matching gears 112 rotate synchronously, the matching shaft 1121 rotates synchronously, drives the movable rod 113 to move, the distance between the moving wheel 114 and the shaft center of the shell 115 can be adjusted, so that the device can adjust the length of the movable rod 113 protruding out of the shell 115 according to the pipe diameter, so that the device can smoothly move in various specifications of pipes.

[0032] The support assembly 1 further comprises a first connecting shaft 12 and a first motor 13, the end of the first connecting shaft 12 penetrates through the center of the shell 115 and is rotationally connected with the shell 115, the middle part of the first connecting shaft 12 penetrates in the connecting pipe 4, and both ends are fixedly connected with the corresponding adjusting gears 111, one end of the first connecting shaft 12 is fixedly connected with the output shaft of the first motor 13, starting the first motor 13 drives the first connecting shaft 12 to rotate, which can simultaneously adjust the length of the movable rod 113 protruding out of the corresponding shell 115 in the two groups of support parts 11, avoiding that the lengths of the movable rods 113 protruding out of the corresponding shells 115 in the two groups of support parts 11 are different, which affects the movement of the repair device in the pipe.

[0033] The adjusting part 22 comprises a moving rod 221, a large gear 222, a pinion 223 and a limiting plate 224, the large gear 222, the pinion 223 and the limiting plate 224 are located in the connecting pipe 4, the limiting plate 224 is sleeved on the first connecting shaft 12, the outer periphery of the limiting plate 224 is fixedly connected with the connecting pipe 4, the large gear 222 is rotationally connected with the middle part of the limiting plate 224, the pinion 223 is rotationally connected with the limiting plate 224, the pinion 223 is arranged on one side of the large gear 222 and is meshedly connected with the large gear 222, the limiting plate 224 and the connecting pipe 4 are coaxial, six slide grooves 2241 are radially arranged on the limiting plate 224, the six slide grooves 2241 are circumferentially distributed, six movable windows 41 are circumferentially and uniformly arranged at the two ends of the connecting pipe 4, six connecting blocks 2311 are circumferentially and uniformly arranged on the outer side of the protection shell 231, the moving rod 221 is provided in six, the moving rod 221 corresponds to the slide groove 2241, the movable window 41 on one side of the connecting pipe 4 and the connecting block 2311 in one-to-one manner, one end of the moving rod 221 penetrates through the corresponding connecting block 2311, continues to penetrate through the movable window 41 and is inserted into the slide groove 2241 and is slidably connected with the slide groove 2241, the moving rod 221 is slidably connected with the connecting block 2311 and the movable window 41; the moving rod 221 is Z-shaped, one end of the moving rod 221 penetratingly arranged in the slide groove 2241 is provided with a limiting shaft 2211, the middle part of the moving rod 221 extends to the middle part of the connecting pipe 4, the other end of the moving rod 221 is provided with the cleaning part 21, six arc-shaped moving grooves 2221 are circumferentially and uniformly arranged on the large gear 222, the moving grooves 2221 extend from the middle part of the large gear 222 to the outer periphery, the limiting shaft 2211 corresponds to the moving groove 2221 in one-to-one manner, one end of the limiting shaft 2211 penetrates out of the surface of the limiting plate 224 and is slidably connected with the limiting plate 224, when the pinion 223 rotates, the large gear 222 is driven to rotate, the limiting shaft 2211 moves along the moving groove 2221, the moving rod 221 moves along the corresponding slide groove 2241, the length of the moving rod 221 protruding out of the slide groove 2241 can be adjusted, the cleaning part 21 can contact the inner walls of pipes with different diameters, and pipes with different diameters can be cleaned.

[0034] The cleaning part 21 comprises wide-slot cleaning blocks 211 and narrow-slot cleaning blocks 212, the wide-slot cleaning blocks 211 and the narrow-slot cleaning blocks 212 are all arranged with three and are all arc-shaped, and are coaxial with the connecting pipe 4, three wide-slot cleaning blocks 211 are fixedly arranged at one end of three adjacent moving rods 221 of the same adjusting part 22 away from the axis of the connecting pipe 4, three narrow-slot cleaning blocks 212 are fixedly arranged at one end of the remaining three moving rods 221 of the same adjusting part 22 away from the axis of the connecting pipe 4, the three wide-slot cleaning blocks 211 and the three narrow-slot cleaning blocks 212 are sequentially and spacedly arranged, the end of the narrow-slot cleaning block 212 is inserted and slidably connected with the end of the wide-slot cleaning block 211, the three narrow-slot cleaning blocks 212 and the three wide-slot cleaning blocks 211 are spliced into a circular shape, with the change of the length of the moving rod 221 protruding out of the sliding groove 2241, the diameter range of the cleaning part 21 can be adjusted to adapt to pipes of different diameters, and two groups of cleaning parts 21 are arranged on the moving rods 221 of two groups of adjusting parts 22 and are symmetrically arranged.

[0035] The cleaning assembly 2 further comprises a second connecting shaft 24 and a second motor 25, the second connecting shaft 24 and the second motor 25 are both arranged in the connecting pipe 4, the second motor 25 is arranged at one side of one limiting plate 224 away from the other limiting plate 224, the second connecting shaft 24 is rotatably connected with the limiting plates 224 and penetrates through the two limiting plates 224 at both ends, one end of the second connecting shaft 24 is fixedly connected with the output shaft of the second motor 25 through the corresponding limiting plate 224, and the other end of the second connecting shaft 24 is fixedly connected with the pinion gears 223 of the two groups of adjusting parts 22, the start of the second motor 25 drives the second connecting shaft 24 to rotate, so that the lengths of the moving rods 221 of the two groups of adjusting parts 22 protruding out of the sliding grooves 2241 can be simultaneously adjusted, the lengths of the moving rods 221 of the two groups of adjusting parts 22 protruding out of the corresponding sliding grooves 2241 are avoided from being different, the diameters of the two groups of cleaning parts 21 are consistent, cleaning is simultaneously performed, and the cleaning effect is improved.

[0036] The repairing assembly 3 comprises support rings 31 and a repairing air bag 32, the support rings 31 are arranged with two and are spacedly arranged in the middle of the connecting pipe 4, the support rings 31 are coaxial with the connecting pipe 4, and the fixed ends of the two bidirectional telescopic rods 232 are arranged to penetrate through the two ends of the support rings 31, the repairing air bag 32 is a ring-shaped air bag, the repairing air bag 32 is arranged on the two support rings 31, a repairing material is laid on the outside of the repairing air bag 32, the end of the repairing air bag 32 is provided with an inflation port, the repairing air bag 32 can be inflated through the connected external inflation pipeline, the repairing material is completely attached to the cleaned inner wall of the pipe, and the pipe is repaired.

[0037] When the pipeline breakage trenchless repairing device is used, the two telescopic ends of the bidirectional telescopic rod 232 are extended, the two protective shells 231 are separated, the repairing material is laid outside the repairing air bag 32, the two telescopic ends of the bidirectional telescopic rod 232 are retracted, the two protective shells 231 are contacted, the repairing material is protected, the first motor 13 is started, the adjusting gear 111 is rotated, the length of the movable rod 113 extending out of the shell 115 is adjusted, the moving wheel 114 is attached to the pipe wall, the first motor 13 is closed, the repairing device is lowered to the appropriate position of the pipeline under the driving of the external driving mechanism, the second motor 25 is started, the movable rod 221 is extended out of the sliding groove 2241 until the cleaning part 21 at the end of the movable rod 221 is contacted with the inner wall of the pipeline, the second motor 25 is closed, the two telescopic ends of the bidirectional telescopic rod 232 are extended again, the two protective shells 231 are separated and respectively move to the two ends of the connecting pipe 4, the movable rod 221 and the cleaning part 21 are moved to the two ends of the connecting pipe 4, the inner wall of the pipeline is cleaned and the repairing material is exposed, the repairing air bag 32 is inflated, the repairing material is attached to the inner wall of the pipeline, and the pipeline repairing is completed.

[0038] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A trenchless pipe break repair apparatus, comprising: The utility model provides a support component, a cleaning component, a repairing component and a connecting pipe, the support component includes two groups of support parts, the connecting pipe is arranged between two groups of support parts, the repairing component is sleeved in the middle part of connecting pipe, the cleaning component includes cleaning part, adjusting part and telescopic part, adjusting part is provided with two groups, two groups of adjusting parts are symmetrically arranged at the both ends of connecting pipe, and telescopic part is arranged between two groups of adjusting parts, and the outer periphery of two groups of adjusting parts is provided with a group of cleaning parts, telescopic part includes protection shell and two -way telescopic rod, protection shell sets up two, and two -way telescopic rod two telescopic ends are fixedly connected with the inside of a protection shell respectively, two protection shells are all sleeved on connecting pipe and are oppositely arranged, and two protection shells contact or separate, and the repairing component is arranged between two protection shells and is located the inside of protection shell.

2. A trenchless pipe repair apparatus for repairing a damaged pipe according to claim 1, wherein: The cleaning part includes wide slot cleaning block and narrow slot cleaning block, the wide slot cleaning block and the narrow slot cleaning block are all provided with three and are all arc-shaped, and are coaxial with the connecting pipe, the three wide slot cleaning blocks and the three narrow slot cleaning blocks are fixedly arranged at the one end of the six moving rods of the same adjusting part away from the axis of the connecting pipe, the three wide slot cleaning blocks and the three narrow slot cleaning blocks are sequentially and spacedly arranged, and the end of the narrow slot cleaning block is inserted and slidably connected with the end of the wide slot cleaning block.

3. A trenchless pipe rehabilitation device for repairing a damaged pipe according to claim 1, wherein: The adjusting part includes a moving rod and a limiting plate, the limiting plate is coaxially arranged with the connecting rod, the limiting plate is located in the connecting pipe and is fixedly connected with the connecting pipe, six slide grooves are radially formed on the limiting plate, and the six slide grooves are circumferentially distributed, the moving rod is slidably connected with the connecting pipe by penetrating the connecting pipe, and the moving rod is slidably connected with the slide groove.

4. A trenchless pipe rehabilitation device for repairing a damaged pipe according to claim 3, wherein: The adjusting part further includes a large gear and a small gear, the small gear is arranged on one side of the large gear and is meshingly connected with the large gear, the large gear is rotatably connected with the middle part of the limiting plate, the small gear is rotatably connected with the limiting plate, one end of the moving rod penetrating the slide groove is provided with a limiting shaft, the other end of the moving rod is provided with the cleaning part, six arc-shaped moving grooves are uniformly formed on the large gear in the circumferential direction, and the moving grooves correspond to the limiting shaft one by one.

5. A trenchless pipe repair apparatus for repairing a damaged pipe according to claim 1, wherein: The support part includes an adjusting gear, a matching gear and a shell, the shell is coaxially arranged with the connecting pipe and is fixedly connected with the end of the connecting pipe, the adjusting gear and the matching gear are arranged in the shell, the adjusting gear is coaxially arranged with the shell and is rotatably connected with the shell, the matching gear is provided with four, the four matching gears are uniformly arranged around the adjusting gear and are meshingly connected with the adjusting gear, and the matching gear is rotatably connected with the shell.

6. A trenchless pipe rehabilitation device for repairing a damaged pipe according to claim 5, wherein: The support part further includes a movable rod and a moving wheel, the matching gear is provided with a matching shaft, the movable rod and the moving wheel are both provided with four, one end of the movable rod is provided with a long circular through hole and is located in the shell, the other end of the movable rod penetrates the shell and is slidably connected with the shell, one end of the movable rod penetrating the shell is rotatably connected with the moving wheel, and the matching shaft penetrates the through hole and is slidably connected with the through hole.

7. A trenchless pipe repair apparatus according to claim 1, wherein: The repairing component includes a support ring and a repairing air bag, the support ring is provided with two, the two support rings are spacedly sleeved in the middle part of the connecting pipe, the support ring is coaxial with the connecting pipe, the fixed ends of the two two-way telescopic rods are respectively penetrated in the two ends of the support ring, the repairing air bag is an annular air bag, and the repairing air bag is sleeved on the two support rings.

8. A trenchless pipe rehabilitation device for repairing a damaged pipe according to claim 5, wherein: The supporting assembly further comprises a first connecting shaft and a first motor, the first connecting shaft passes through the center of the shell and is rotationally connected with the shell, the middle part of the first connecting shaft is arranged in the connecting pipe, the two ends of the first connecting shaft are fixedly connected with the corresponding adjusting gears, and one end of the first connecting shaft is fixedly connected with the output shaft of the first motor.

9. A trenchless pipe rehabilitation device for repairing a damaged pipe according to claim 4, wherein: The cleaning assembly further comprises a second connecting shaft and a second motor, the second connecting shaft and the second motor are arranged in the connecting pipe, the second motor is arranged on one side of one of the limiting plates, the two ends of the second connecting shaft are rotationally connected with the two limiting plates respectively, one end of the second connecting shaft is fixedly connected with the output shaft of the second motor in a penetrating mode through the corresponding limiting plate, and the two ends of the second connecting shaft are fixedly connected with the pinion gears of the two groups of adjusting parts respectively.

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