CN213145571U

CN213145571U - Non-excavation prosthetic devices of drainage pipe

Info

Publication number: CN213145571U
Application number: CN202022110838.XU
Authority: CN
Inventors: 彭立钧
Original assignee: Anhui Haoyu Construction Engineering Co ltd
Current assignee: Anhui Haoyu Construction Engineering Co ltd
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2021-05-07
Anticipated expiration: 2030-09-23

Abstract

The application relates to the field of trenchless restoration, and discloses a drainage pipeline trenchless restoration device, which comprises a cylindrical machine body and a plurality of movable wheels arranged at the bottom of the machine body, wherein the machine body comprises a driving part, an equipment part and a rotating part rotatably arranged between the driving part and the equipment part, and the machine body further comprises a rotating assembly for driving the rotating part to rotate around the axis of the machine body; the runner assembly including be fixed in motor and transmission on the drive division install in motor output epaxial dwang, the dwang with rotating part fixed connection, be provided with on the rotating part with dwang fixed connection's electronic push cylinder with be fixed in arc on the electronic push cylinder piston rod, the arc is laminated with the drainage pipe inner wall. This application has all-round restoration drainage pipe's effect.

Description

Non-excavation prosthetic devices of drainage pipe

Technical Field

The application relates to the field of trenchless repair, in particular to a trenchless repair device for drainage pipelines.

Background

Urban drainage pipelines are one of important infrastructures for supporting social development and guaranteeing people's life, and pipeline maintenance is a necessary means for guaranteeing normal mechanism and function of the urban drainage pipelines. The pipeline repairing work mainly carries out pipeline repairing through two repairing modes, namely excavation repairing and trenchless repairing, and the trenchless repairing mode is gradually paid attention to due to low influence and low maintenance on infrastructure.

The water draining pipe made of red copper or stainless steel can work normally after plastic deformation due to the fact that metal has high toughness, for example, some water draining pipes are extruded and collapsed by easy misoperation in the process of some building construction and municipal construction, the inner diameter of the pipeline is reduced although the pipeline is not broken, water flow is reduced, local weak points are formed at the collapsed parts, and the collapsed parts of the pipeline are prone to collapse under the action of water pressure for a long time.

The utility model discloses a china utility model that bulletin number is CN210647858U at present discloses a drainage pipe non-excavation formula prosthetic devices, which comprises a bod, the inboard bottom central authorities of organism inlay and be equipped with first pneumatic cylinder, the piston rod bottom of first pneumatic cylinder is connected with down repairs the board, the top fixed mounting of organism has the box, the inside central authorities of box are equipped with the motor, motor output shaft has cup jointed the driving gear, the driving gear top is equipped with first driven rack, first driven rack one end is connected with the head rod, head rod end fixing has first restoration curb plate, the driving gear below is equipped with the driven rack of second, driven rack one end of second is connected with the second connecting rod, second connecting rod end fixing has the second to repair the curb plate, the box top is fixed with the second pneumatic cylinder, the top of second pneumatic cylinder is connected with the second connecting rod, repair the board on the top of second. The non-excavation repairing device for the drainage pipeline enables the collapsed part of the drainage pipeline to recover to the normal pipeline inner diameter through jacking the collapsed metal drainage pipe by the repairing plate, but the position of the repairing plate on the repairing device is fixed, so that the repairing plate can only repair the drainage pipeline at a single position.

In view of the above-mentioned related art, the inventors considered that there was a defect that the drain pipeline could not be repaired in all directions.

SUMMERY OF THE UTILITY MODEL

For all-round restoration drainage pipe, this application provides a drainage pipe non-excavation prosthetic devices.

The application provides a non-excavation prosthetic devices of drainage pipe adopts following technical scheme:

a drainage pipeline repairing device comprises a cylindrical machine body and a plurality of moving wheels arranged at the bottom of the machine body, wherein the machine body comprises a driving part, an equipment part and a rotating part rotatably arranged between the driving part and the equipment part, and the machine body further comprises a rotating assembly used for driving the rotating part to rotate around the axis of the machine body; the runner assembly including be fixed in motor and transmission in the drive division install in motor output epaxial dwang, the dwang with rotating part fixed connection, be provided with on the rotating part with dwang fixed connection's electronic push cylinder with be fixed in arc on the electronic push cylinder piston rod, the arc is used for laminating with the drainage pipe inner wall.

Through adopting above-mentioned technical scheme, the motor rotates and drives the dwang and rotate, and the dwang rotates and makes the rotating part rotate, and the rotating part rotates and makes the drainage pipe position that the arc aimed at change for the arc can aim at the position of caving in on the drainage pipe optional position, and electronic pushing cylinder promotes the arc and rises, makes the arc from inside to the drainage pipe jacking of caving, thereby the arc can all-round restoration drainage pipe.

Preferably, the runner assembly still include with motor output shaft fixed connection's driving gear, rotation install in driven gear on the drive division and install in mounting on the dwang, the dwang with driven gear fixed connection, driven gear with the driving gear meshing, just the number of teeth of driven gear is many times the number of teeth of driving gear, the mounting include with equipment portion fixed connection's fixed station with be fixed in thrust bearing on the fixed station, thrust bearing cover is located on the dwang, the thrust bearing inner circle with dwang fixed connection.

Through adopting above-mentioned technical scheme, the motor starts to drive the driving gear and rotates, driving gear and driven gear meshing, make the driving gear drive driven gear and rotate, driven gear rotates and makes the dwang rotate, the dwang makes the rotating part rotate together, the number of teeth of driven gear is several times the number of teeth of driving gear, be favorable to slowing down and increase the turn-round, make rated torque's motor also can drive the rotating part and rotate, thrust bearing's use makes equipment portion difficult for breaking away from on the length direction of organism in addition mounting.

Preferably, the end faces of the two ends of the rotating part are respectively fixed with a connecting ring extending around the axis of the rotating part, the section of the connecting ring perpendicular to the extending direction of the connecting ring is in a dovetail shape, the end face of the equipment part close to the rotating part is provided with a first connecting groove, the opening of the first connecting groove is in a circular ring shape, the end face of the driving part close to the rotating part is provided with a second connecting groove, and the opening of the second connecting groove is in a circular ring shape; the connecting ring close to the equipment part is embedded in the first connecting groove and is in sliding fit with the inner wall of the first connecting groove, and the connecting ring close to the driving part is embedded in the second connecting groove and is in sliding fit with the inner wall of the second connecting groove.

Through adopting above-mentioned technical scheme, be close to equipment portion the go-between inlays to be located in the first spread groove and with the cooperation that slides in the first spread groove for the connection of equipment portion and rotating part is more fastened, and be close to drive portion the go-between inlays to be located in the second spread groove and with the cooperation that slides in the second spread groove makes rotating part and drive portion difficult for breaking away from on the length direction of organism. And the first connecting groove and the second connecting groove divide the machine body, so that the motor fixed on the driving part and other components are not interfered with each other.

Preferably, the piston rod of the electric pushing cylinder is detachably connected with the arc-shaped plate, the arc-shaped plate is provided with a plurality of types, and the curvature radiuses of the arc-shaped plate are respectively arranged according to different inner diameters of drainage pipelines.

Through adopting above-mentioned technical scheme, to the drainage pipe of different specifications, operating personnel can select different curvature radius's arc according to drainage pipe's internal diameter for the arc top surface and the laminating of drainage pipe inner wall of arc have strengthened drainage pipe non-excavation prosthetic devices's suitability.

Preferably, a first connecting piece is fixed on a piston rod of the electric pushing cylinder, a second connecting piece is fixed on the arc-shaped plate, a threaded sleeve is arranged between the first connecting piece and the second connecting piece and sleeved on the first connecting piece and the second connecting piece, one end of the threaded sleeve is in threaded connection with the first connecting piece, the other end of the threaded sleeve is in threaded connection with the second connecting piece, and the first connecting piece and the second connecting piece are abutted in the threaded sleeve.

Through adopting above-mentioned technical scheme, operating personnel installs the screw sleeve cover on first connecting piece earlier, operating personnel is the second connecting piece screw in screw sleeve on the arc again, if first connecting piece offsets in screw sleeve with the second connecting piece, the arc is not laminated with the drainage pipe inner wall, operating personnel can be through rotatory screw sleeve earlier, make the space appear between first connecting piece and the second connecting piece, operating personnel controls second connecting piece screw in screw sleeve's length again, make the arc can laminate mutually with drainage pipe's inner wall.

Preferably, a guide cylinder is fixed on the rotating part, the guide cylinder is sleeved on the electric push cylinder piston rod, and the guide cylinder is in sliding fit with the electric push cylinder piston rod.

Through adopting above-mentioned technical scheme, the guide cylinder has enlarged the area of contact of electronic push cylinder and rotating part for the rotating part increases the holding power of electronic push cylinder, is favorable to the stability of electronic push cylinder.

Preferably, the number of the electric push cylinders is four, the four electric push cylinders are uniformly distributed around the axis of the machine body, and the axes of the piston rods of the adjacent electric push cylinders are intersected and perpendicular.

Through adopting above-mentioned technical scheme, when electronic push cylinder promoted arc jacking drainage pipe, there is the holding power between the electronic push cylinder of axis coincidence, and the reaction force that jacking drainage pipe produced is offset by the holding power, is favorable to preventing that the reaction force that jacking drainage pipe produced from causing the destruction to the bull stick.

Preferably, the end of the machine body is fixed with a traction block connected with a traction rope, a telescopic rod used for adjusting the height of the machine body is fixed between the movable wheel and the bottom surface of the machine body, the telescopic rod comprises a fixed cylinder fixedly connected with the machine body and a movable cylinder fixed on the movable wheel, the movable cylinder is arranged in the fixed cylinder and is in sliding fit with the fixed cylinder, the movable cylinder is provided with a plurality of positioning holes, the positioning holes are uniformly distributed along the axial direction of the movable cylinder, and the fixed cylinder is provided with fixing pins in inserting fit with the positioning holes in a penetrating manner.

Through adopting above-mentioned technical scheme, operating personnel pulls drainage pipe non-excavation prosthetic devices to drainage pipe position that needs to be restoreed through the haulage rope of traction block cooperation tractor, and operating personnel inserts the locating hole of different positions on the removal section of thick bamboo through the locating pin for the organism height can be adjusted to the telescopic link, makes the axis of organism and drainage pipe's axis coincidence, thereby guarantees that a plurality of arcs on the same straight line equal to the distance of drainage pipe inner wall.

In summary, the present application includes at least one of the following beneficial technical effects:

the rotating part rotates to enable the arc-shaped plate to be aligned to the collapse part of the drainage pipeline in any position, the electric push cylinder pushes the arc-shaped plate to ascend, so that the arc-shaped plate jacks the collapsed drainage pipeline from the inside, and the drainage pipeline can be repaired in all directions by the arc-shaped plate;

operators can select arc-shaped plates with different curvature radiuses according to the inner diameter of the drainage pipeline, so that the applicability of the drainage pipeline trenchless repairing device is enhanced;

drawings

FIG. 1 is an exploded view of a trenchless rehabilitation apparatus for drainage pipelines according to an embodiment of the present application.

Fig. 2 is a schematic view of the internal structure of the apparatus section.

Fig. 3 is a schematic view of the internal structure of the driving section.

Fig. 4 is a schematic view of the internal structure of the rotary unit.

Description of reference numerals: 11. an equipment section; 111. a first connecting groove; 112. a first carrier stage; 12. a drive section; 121. a second connecting groove; 122. a second carrier table; 13. a rotating part; 131. a connecting ring; 132. a support pillar; 133. a guide cylinder; 134. an electric pushing cylinder; 135. a first connecting member; 136. a second connecting member; 137. a threaded sleeve; 138. an arc-shaped plate; 141. a motor; 142. rotating the rod; 143. a driving gear; 144. a driven gear; 145. a fixing member; 146. a thrust bearing; 147. a fixed table; 2. a moving wheel; 3. a traction block; 4. a telescopic rod; 41. a fixed cylinder; 42. moving the drum; 43. positioning holes; 44. and fixing the pin.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses drainage pipe trenchless repairing device. Referring to fig. 1, a trenchless rehabilitation apparatus for a drainage pipeline includes a body and a moving wheel 2. The machine body includes a driving part 12, a rotating part 13, and an equipment part 11, which are sequentially provided. The equipment part 11 is cylindrical, one end of the equipment part is closed, the other end of the equipment part is open, a first connecting groove 111 is formed in the end face, close to the rotating part 13, of the opening of the equipment part 11, the first connecting groove 111 extends annularly around the axis of the machine body, and the cross section, perpendicular to the extending direction of the first connecting groove 111, of the first connecting groove is in a dovetail shape. The driving portion 12 is cylindrical, one end of the driving portion is closed, the other end of the driving portion is open, a second connecting groove 121 is formed in the end face, close to the rotating portion 13, of the opening of the device portion 11, the second connecting groove 121 extends annularly around the axis of the machine body, and the cross section, perpendicular to the extending direction of the second connecting groove 121, of the second connecting groove is in a dovetail shape.

Referring to fig. 1, the rotating portion 13 is cylindrical, and both ends of the rotating portion 13 are open. The end surfaces of the two open ends of the rotating part 13 are provided with connecting rings 131, the connecting rings 131 extend annularly around the axis of the rotating part 13, and the cross section of the connecting ring 131 perpendicular to the extending direction of the connecting ring is dovetail-shaped. The connection ring 131 adjacent to the equipment portion 11 is embedded in the first connection groove 111, and the connection ring 131 adjacent to the equipment portion 11 is slidably engaged with the inner wall of the first connection groove 111. The connecting ring 131 close to the driving part 12 is embedded in the second connecting groove 121, and the connecting ring 131 close to the driving part 12 is slidably engaged with the inner wall of the second connecting groove 121. The rotation unit 13 is rotatably connected to the drive unit 12 and the device unit 11, respectively.

Referring to fig. 2 and 3, a first loading platform 112 is disposed in the equipment unit 11, a length direction of the first loading platform 112 is identical to a length direction of the equipment unit 11, a cross section of the first loading platform 112 perpendicular to the length direction is arched, an arched surface of the first loading platform 112 is fixedly connected with an inner wall of the equipment unit 11, and a rectangular surface of the first loading platform 112 is parallel to a horizontal plane. A second bearing platform 122 is arranged in the driving part 12, the length direction of the second bearing platform 122 is consistent with the length direction of the equipment part 11, the section of the second bearing platform 122 perpendicular to the length direction is arched, the arched surface of the second bearing platform 122 is fixedly connected with the inner wall of the equipment part 11, and the rectangular surface of the second bearing platform 122 is parallel to the horizontal plane.

Referring to fig. 1 and 2, the body further includes a rotation assembly including a motor 141, a driving gear 143, a driven gear 144, a rotation rod 142, and a fixing member 145. The fixing member 145 includes a thrust bearing 146 and a fixing table 147, the fixing table 147 is a rectangular parallelepiped, an upper surface of the fixing table 147 is fixedly connected to an outer ring of the thrust bearing 146, and a bottom surface of the fixing table 147 is fixedly connected to the first carrier table 112. As shown in fig. 3, the motor 141 is fixedly connected to the second platform 122, and an axis of an output shaft of the motor 141 is parallel to a length direction of the rotating portion 13. The driving gear 143 is sleeved on an output shaft of the motor 141, and the driving gear 143 is fixedly connected with the output shaft of the motor 141. The driven gear 144 is rotatably mounted on the rectangular surface of the second platform 122, the number of teeth of the driven gear 144 is several times that of the driving gear 143, the driven gear 144 is engaged with the driving gear 143, and the axis of the driven gear 144 coincides with the axis of the rotating portion 13. The rotating rod 142 is a cylinder, the axis of the rotating rod 142 coincides with the axis of the rotating portion 13, one end of the rotating rod 142 is fixedly connected to the driven gear 144, and the other end of the rotating rod 142 extends to the equipment portion 11 and is fixedly connected to the inner ring of the thrust bearing 146. The motor 141 is started to drive the driving gear 143 to rotate, the driving gear 143 is meshed with the driven gear 144, the driving gear 143 drives the driven gear 144 to rotate, and the driven gear 144 rotates to enable the rotating rod 142 to rotate.

Referring to fig. 4, a support column 132 is disposed in the rotating portion 13, the support column 132 is a rectangular parallelepiped, one end of the support column 132 is fixedly connected to the rotating rod 142, the other end of the support column 132 is fixedly connected to an inner wall of the rotating portion 13, and a length direction of the support column 132 is perpendicular to a length direction of the rotating rod 142. The support columns 132 are provided with eight, and eight support columns 132 divide into two sets ofly, and every group support column 132 has four, and two sets of support columns 132 set up respectively in the inside dwang 142 both ends of rotating part 13, and every group support column 132 centers on the axis evenly distributed of dwang 142.

Referring to fig. 4, the rotating portion 13 is provided with a guide cylinder 133, the guide cylinder 133 is inserted into an outer surface of the rotating portion 13, the guide cylinder 133 is fixedly connected to the rotating portion 13, and an axis of the guide cylinder 133 is perpendicular to and intersects with an axis of the rotating lever 142. The rotating portion 13 is provided with an electric cylinder 134 and an arc plate 138. The electric pushing cylinder 134 is fixedly connected with the rotating rod 142, a piston rod of the electric pushing cylinder 134 penetrates through the guide cylinder 133 to be fixedly connected with the arc-shaped plate 138, and the piston rod of the electric pushing cylinder 134 is in sliding fit with the guide cylinder 133. The arc-shaped plate 138 is arc-shaped, the curvature radius of the arc-shaped plate 138 is smaller than the radius of the drainage pipeline to be repaired, and when the electric push cylinder 134 pushes the arc-shaped plate 138, the upper surface of the arc-shaped plate is attached to the inner wall of the drainage pipeline. The electric pushing cylinder 134 is provided with a first connecting member 135 on the piston rod, and a second connecting member 136 is provided on the bottom of the arc plate 138. The first link 135 is a cylindrical body, and an axis of the first link 135 coincides with an axis of the electric cylinder 134. One end of the first connecting member 135 is fixedly connected to the piston rod of the electric pushing cylinder 134, and the first connecting member 135 faces the arc plate 138. The second link 136 is a cylinder, and the axis of the second link 136 coincides with the axis of the first link 135. One end of the second connecting member 136 is fixedly connected to the bottom surface of the arc plate 138, and the other end of the second connecting member 136 faces the electric cylinder 134. A threaded sleeve 137 is arranged between the first connecting piece 135 and the second connecting piece 136, the threaded sleeve 137 is sleeved on the first connecting piece 135 and the second connecting piece 136, one end of the threaded sleeve 137 is in threaded connection with the first connecting piece 135, and the other end of the threaded sleeve 137 is in threaded connection with the second connecting piece 136. When the first connecting piece 135 and the second connecting piece 136 abut in the threaded sleeve 137, the length of the arc-shaped plate 138 is consistent with the length direction of the drainage pipeline. The number of the electric push cylinders 134 is four, and the four electric push cylinders 134 are uniformly arranged on the rotating rod 142 around the axis of the rotating rod 142. The arc plates 138 are provided in four, and the four arc plates 138 are evenly distributed on the outer surface of the rotating portion 13 around the body axis.

Referring to fig. 1 and 2, a traction block 3 is arranged on the closed end face of the equipment part 11, the traction block 3 is a cuboid, one end of the traction block 3 is fixedly connected with the end face of the equipment part 11, the other end of the traction block 3 is fixedly connected with a traction rope of a tractor of the tractor, and the traction block 3 is used for matching with the tractor to pull the machine body to a drainage pipeline collapse position. The bottom of organism is provided with removes wheel 2, removes to be provided with telescopic link 4 between the bottom surface of wheel 2 and organism. The telescopic rod 4 comprises a fixed cylinder 41 and a movable cylinder 42, the fixed cylinder 41 is cylindrical, one end of the fixed cylinder 41 is fixedly connected with the bottom surface of the machine body, and one end of the fixed cylinder 41 is arranged downwards. The movable cylinder 42 is cylindrical, one end of the movable cylinder 42 is arranged in the fixed cylinder 41, the other end of the movable cylinder 42 is fixedly connected with the movable wheel 2, and the movable cylinder 42 is in sliding fit with the fixed cylinder 41. The movable cylinder 42 is provided with a plurality of positioning holes 43, the openings of the positioning holes 43 are circular, the positioning holes 43 are provided, and the plurality of positioning holes 43 are uniformly distributed along the length direction of the movable cylinder 42. The fixing cylinder 41 is provided with a fixing pin 44, the fixing pin 44 is a cylinder, and the fixing pin 44 penetrates through the fixing cylinder 41 to be in inserted fit with the positioning hole 43. The telescopic rod 4 selects proper extension amount according to different inner diameters of the drainage pipeline to be repaired, so that the axis of the machine body is coincided with the axis of the drainage pipeline. Remove wheel 2 and be provided with four, four removals set up in the organism four corners, and two remove wheel 2 and pass through telescopic link 4 and drive division 12 fixed connection, and two remove wheel 2 and pass through telescopic link 4 and equipment portion 11 fixed connection.

The implementation principle of the trenchless drainage pipeline repairing device in the embodiment of the application is as follows: when non-excavation prosthetic devices of drainage pipe is pulled the restoration position, motor 141 starts to make driving gear 143 rotate, driving gear 143 rotates and drives driven gear 144 and rotate, driven gear 144 rotates and drives dwang 142 and rotates, dwang 142 rotates and makes rotating part 13 rotate, rotating part 13 rotates and makes the drainage pipe position that arc 138 aimed at change, make the arc 138 can aim at the position of collapsing on the drainage pipe optional position, electronic thrust cylinder 134 promotes arc 138 and rises, make arc 138 follow inside to the drainage pipe jacking of collapsing, thereby make arc 138 can all-round restoration drainage pipe.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a drainage pipe trenchless prosthetic devices which characterized in that: the device comprises a cylindrical machine body and a plurality of moving wheels (2) arranged at the bottom of the machine body, wherein the machine body comprises a driving part (12), an equipment part (11) and a rotating part (13) rotatably arranged between the driving part (12) and the equipment part (11), and further comprises a rotating assembly used for driving the rotating part (13) to rotate around the axis of the machine body; the rotating assembly comprises a motor (141) and a transmission device which are fixed in the driving portion (12), wherein the motor (141) and the transmission device are arranged in a rotating rod (142) on an output shaft of the motor (141), the rotating rod (142) is fixedly connected with the rotating portion (13), the rotating portion (13) is provided with an electric pushing cylinder (134) fixedly connected with the rotating rod (142) and is fixed on the electric pushing cylinder (134), and an arc plate (138) is arranged on a piston rod of the electric pushing cylinder (134), and the arc plate (138) is used for being attached to the inner wall of a drainage pipeline.

2. The trenchless rehabilitation apparatus for drainage pipelines of claim 1, wherein: the rotating assembly further comprises a driving gear (143) fixedly connected with an output shaft of the motor (141), a rotating gear (144) arranged on the driving portion (12) and a fixing member (145) arranged on the rotating rod (142), the rotating rod (142) is fixedly connected with the driven gear (144), the driven gear (144) is meshed with the driving gear (143), the number of teeth of the driven gear (144) is multiple of the number of teeth of the driving gear (143), the fixing member (145) comprises a fixing table (147) fixedly connected with the equipment portion (11) and a thrust bearing (146) fixed on the fixing table (147), the thrust bearing (146) is sleeved on the rotating rod (142), and an inner ring of the thrust bearing (146) is fixedly connected with the rotating rod (142).

3. The trenchless rehabilitation apparatus for drainage pipelines of claim 1, wherein: the end faces of two ends of the rotating part (13) are respectively fixed with a connecting ring (131) extending around the axis of the rotating part (13), the section of the connecting ring (131) perpendicular to the extending direction of the connecting ring is dovetail-shaped, the end face of the equipment part (11) close to the rotating part (13) is provided with a first connecting groove (111), the opening of the first connecting groove (111) is circular, the end face of the driving part (12) close to the rotating part (13) is provided with a second connecting groove (121), and the opening of the second connecting groove (121) is circular; the connecting ring (131) close to the equipment part (11) is embedded in the first connecting groove (111) and is in sliding fit with the inner wall of the first connecting groove (111), and the connecting ring (131) close to the driving part (12) is embedded in the second connecting groove (121) and is in sliding fit with the inner wall of the second connecting groove (121).

4. The trenchless rehabilitation apparatus for drainage pipelines of claim 1, wherein: the piston rod of electronic push cylinder (134) with arc (138) can dismantle the connection, arc (138) are equipped with the multiple, and are multiple the curvature radius of arc (138) sets up according to the drainage pipe internal diameter of difference respectively.

5. The trenchless rehabilitation apparatus for drainage pipelines of claim 1, wherein: a first connecting piece (135) is fixed on a piston rod of the electric pushing cylinder (134), a second connecting piece (136) is fixed on the arc-shaped plate (138), a threaded sleeve (137) is arranged between the first connecting piece (135) and the second connecting piece (136), the first connecting piece (135) and the second connecting piece (136) are sleeved with the threaded sleeve (137), one end of the threaded sleeve (137) is in threaded connection with the first connecting piece (135), the other end of the threaded sleeve (137) is in threaded connection with the second connecting piece (136), and the first connecting piece (135) and the second connecting piece (136) are abutted in the threaded sleeve (137).

6. The trenchless rehabilitation apparatus for drainage pipelines of claim 1, wherein: a guide cylinder (133) is fixed on the rotating portion (13), the guide cylinder (133) is sleeved on a piston rod of the electric pushing cylinder (134), and the guide cylinder (133) is in sliding fit with the piston rod of the electric pushing cylinder (134).

7. The trenchless rehabilitation apparatus for drainage pipelines of claim 1, wherein: the four electric pushing cylinders (134) and the four arc-shaped plates (138) are respectively arranged, the four electric pushing cylinders (134) are uniformly distributed around the axis of the machine body, and the axes of the piston rods of the adjacent electric pushing cylinders (134) are intersected and vertical.

8. The trenchless rehabilitation apparatus for drainage pipelines of claim 1, wherein: organism end fixing has the traction block (3) that is used for being connected with the haulage rope, remove wheel (2) with be fixed with between the organism bottom surface and be used for adjusting telescopic link (4) of organism height, telescopic link (4) include with organism fixed connection's a fixed section of thick bamboo (41) with be fixed in remove the section of thick bamboo (42) of moving on the wheel (2), move a section of thick bamboo (42) set up in the fixed section of thick bamboo (41) and with it the cooperation of sliding, a plurality of locating hole (43) have been seted up on the section of thick bamboo (42), it is a plurality of locating hole (43) are evenly arranged along removing a section of thick bamboo (42) axis direction, wear to be equipped with on the fixed section of thick bamboo (41) with locating hole (43) complex fixed pin (44) of.