A kind of municipal drainage pipeline trenchless pipeline supporting device

Abstract

This invention provides a trenchless pipeline support device for municipal drainage pipelines, belonging to the field of municipal pipeline construction technology. The device includes a supporting steel plate. A first sliding groove is formed on the outer wall of the supporting steel plate near its center. Second sliding grooves are symmetrically formed on both sides of the outer wall of the supporting steel plate near the first sliding groove. First clearance grooves are symmetrically formed on the outer walls of both sides of the supporting steel plate near the top. A first fixed cylinder is fixedly connected to the inner wall of the first clearance groove. A second clearance groove is formed on the outer wall of the supporting steel plate near the bottom. A support assembly is used to fix the pipe jacking machine and protect the inner wall of the inspection well. The support assembly is connected to the supporting steel plate. By setting up the support assembly, this invention can counteract the reaction force generated by the pipe jacking machine during its advancement, preventing damage to the inner wall of the inspection well due to the reaction force.

Description

Technical Field

[0001] This invention relates to the field of municipal pipeline construction technology, and in particular to a trenchless pipeline support device for municipal drainage pipelines. Background Technology

[0002] Trenchless technology for municipal drainage pipelines refers to a technical system that completes the laying, repair, or replacement of drainage pipelines without excavation or with only minimal excavation of the ground surface. Compared with the traditional "open-cut method" (excavating the ground first, burying the pipe, and then backfilling), it can minimize the damage to ground traffic, building facilities, and the ecological environment. It is the core means of urban underground pipe network renovation and upgrading. Among them, short pipe replacement is a trenchless repair process that can remove only severely damaged sections of the pipe and replace them with new sections without replacing the entire pipeline.

[0003] Currently, during short pipe replacement, workers need to enter the inspection well to hoist the hydraulic pipe jacking machine, traction device, and other equipment into the well. To ensure the jacking pressure of the hydraulic pipe jacking machine, two steel supports are used to fix it to the inner wall of the inspection well, while ensuring that the machine body is aligned with the pipeline axis (deviation ≤5mm) to prevent displacement during jacking. Afterward, the prefabricated new pipe section is hoisted into the work area through the inspection well, and its position is adjusted manually or mechanically, and calibrated using a laser guide to ensure that it is aligned with the old pipe axis. However, in the old and dilapidated inspection well, the two steel supports used to fix the pipe jacking machine are easily damaged by the reaction force of the jacking pressure during pipe jacking. This not only leads to the need for additional repair of the inspection well inner wall after completion, increasing costs, but may also prevent the pipe jacking machine from being aligned with the pipeline axis, causing displacement during jacking and affecting the construction quality. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a trenchless pipeline support device for municipal drainage pipelines, so as to solve the problem that the inner wall of the inspection well is easily damaged by the reaction force of the jacking pressure when the two steel supports of the fixed pipe jacking machine are jacking the pipe.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A trenchless pipeline support device for municipal drainage pipelines includes a supporting steel plate. A first sliding groove is formed on the outer wall of the supporting steel plate near its center. Second sliding grooves are symmetrically formed on both sides of the outer wall of the supporting steel plate near the first sliding groove. First clearance grooves are symmetrically formed on the outer walls of both sides of the supporting steel plate near the top. A first fixed cylinder is fixedly connected to the inner wall of the first clearance groove. A second clearance groove is formed on the outer wall of the supporting steel plate near the bottom. A support assembly is also included, used to fix the pipe jacking machine and protect the inner wall of the inspection well. The support assembly is connected to the supporting steel plate.

[0006] Optionally, the support assembly includes two second fixed cylinders, which are symmetrically arranged on the inner walls of the two sides of the second clearance groove. A fifth sliding groove is provided on the end wall of the second fixed cylinder. A sliding cylinder is slidably connected to the inner wall of the fifth sliding groove. A first abutment plate is fixedly connected to the end of the sliding cylinder away from the second fixed cylinder. Two first elastic plates are fixedly connected to the outer wall of the first abutment plate on the side near the second fixed cylinder. Second elastic plates are symmetrically arranged on the outer walls of the two sides near the bottom of the support steel plate.

[0007] Optionally, a first rotating groove is formed on the bottom inner wall of the second sliding groove, and a second rotating groove is formed on the top inner wall of the second sliding groove. A first rotating column is rotatably connected to the inner wall of the first rotating groove. A first rotating protrusion is fixedly connected to the end of the first rotating column near the first rotating groove. A first rotating handle is fixedly connected to the end of the first rotating column away from the first rotating groove. A first sliding column is screwed onto the outer wall of the end of the first rotating column near the first rotating protrusion.

[0008] Optionally, a first threaded groove is formed on the top outer wall of the first sliding column near the end of the first rotating column, a third sliding groove is formed on one side outer wall of the first sliding column, a third fixed cylinder is fixedly connected to the inner wall of the third sliding groove, a second sliding column is slidably connected to the outer wall of the third fixed cylinder, a spring is sleeved on the outer wall of the third fixed cylinder, and a semi-circular movable buckle is fixedly connected to the top outer wall of the first sliding column.

[0009] Optionally, the second sliding column has first sliding protrusions symmetrically arranged at both ends, and the outer wall of the first sliding protrusion has a sliding circular hole. A first fixing block is fixedly connected to the middle outer wall of the second sliding column near the spring. A second threaded groove is opened on the top outer wall of the first fixing block. A first threaded column is screwed onto the inner wall of the second threaded groove. A second rotating handle is fixedly connected to the bottom end of the first threaded column. A first tension spring is sleeved on the outer wall of the first threaded column.

[0010] Optionally, a T-shaped steel plate is fixedly connected to the top outer wall of the second sliding column, and a first sliding cylinder is slidably connected to the outer wall of the T-shaped steel plate near both ends. A first limiting plate is fixedly connected to one side outer wall of the first sliding cylinder, a guide plate is fixedly connected to the top outer wall of the T-shaped steel plate, and square fixing plates are symmetrically arranged at both ends of the T-shaped steel plate. A second sliding cylinder is slidably connected to the outer wall of the T-shaped steel plate near the bottom end, a second limiting plate is fixedly connected to one side outer wall of the second sliding cylinder, and an abutting disc is fixedly connected to the other side of the second sliding cylinder.

[0011] Optionally, a first limiting hole is provided on the outer wall near the top of the semi-circular movable buckle, and a limiting pin is inserted into the first limiting hole. The semi-circular movable buckle is fixedly connected to a rotating disk by screws. A plurality of second limiting holes are provided on the outer wall of the rotating disk in a circumferential array. A fourth fixing cylinder is fixedly connected to the outer wall of the rotating disk, and a roller is rotatably connected to the outer wall of the fourth fixing cylinder.

[0012] Optionally, a third rotating groove is formed on the bottom inner wall of the first sliding groove, and a fourth rotating groove is formed on the top inner wall of the first sliding groove. A second rotating column is rotatably connected to the inner wall of the third rotating groove. A second rotating protrusion is fixedly connected to the bottom end of the second rotating column. A third rotating handle is fixedly connected to the top end of the second rotating column. A sliding block is screwed onto the outer wall of the second rotating column near the second rotating protrusion. An L-shaped steel plate is slidably connected to the outer wall of the second rotating column. A second tension spring is sleeved on the outer wall of the second rotating column.

[0013] Optionally, a fourth sliding groove is provided on the top outer wall of the L-shaped steel plate near the end of the second rotating column, and a third clearance groove is provided on the outer wall of the L-shaped steel plate away from the second rotating column. A first clamping column is fixedly connected to the outer wall of the L-shaped steel plate near the third clearance groove, and a third elastic plate is fixedly connected to the outer wall of the L-shaped steel plate away from the first clamping column. A circular fixing plate is fixedly connected to the end of the third elastic plate away from the L-shaped steel plate, and a second clamping column is fixedly connected to the outer wall of the circular fixing plate on the side away from the third elastic plate.

[0014] Optionally, a connecting cylinder is rotatably connected to the outer wall of the first fixed cylinder, and a connecting column is fixedly connected to the outer wall of the connecting cylinder. A third threaded groove is formed on the top outer wall of the connecting column, and a second threaded column is screwed onto the inner wall of the third threaded groove. A fourth rotating handle is fixedly connected to the top of the second threaded column, and a third rotating protrusion is fixedly connected to the bottom of the second threaded column. A second abutment plate is rotatably connected to the bottom of the second threaded column, and a fifth rotating groove is formed on the top of the second abutment plate near the outer wall of the second threaded column.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: In the above scheme, by setting up support components, not only can the reaction force generated by the pipe jacking machine be offset during the jacking process, thus preventing damage to the inner wall of the inspection well due to the reaction force, but the replacement short pipe can also be transported into the inspection well by the weight of the replacement short pipe itself, and the replacement short pipe can be limited and supported, which facilitates the subsequent jacking operation of the pipe jacking machine and improves the work efficiency of the staff.

[0016] By setting a first abutment plate, a first elastic plate, a sliding cylinder, a second abutment plate, and a second elastic plate inside the support assembly, not only can the reaction force of the pipe jacking machine during jacking be offset, preventing the reaction force from acting on the inner wall of the inspection well and causing damage, but also the fourth rotating handle can be rotated according to the depth of the inspection well, so that the second abutment plate abuts against the ground, which can both fix the supporting steel plate and further offset the reaction force of the pipe jacking machine.

[0017] By setting a first rotating column, a first sliding column, a semi-circular movable buckle, a rotating disk, a fourth fixed column, and a roller within the support assembly, it is possible not only to adjust the height of the water pipe to be replaced so that the replacement short pipe is aligned with it, facilitating subsequent operations, but also to adjust the diameter of the replacement short pipe so that the roller can support replacement short pipes of different specifications.

[0018] By setting a third fixed cylinder, a second sliding column, a T-shaped steel plate, a first sliding cylinder, a second sliding cylinder, a first limiting plate, a second limiting plate, a first tension spring, and a first threaded column on the support assembly, it can not only adapt to replacement short pipes of different diameters, but also cooperate with the roller to lift and limit them, so that the replacement short pipe is coaxially aligned with the water pipe to be replaced, which facilitates the subsequent jacking of the pipe jacking machine.

[0019] By setting a second rotating column, an L-shaped steel plate, a first clamping column, a second clamping column, a third elastic plate, and a second tension spring on the support assembly, it can not only adapt to replacement short pipes of different thicknesses, but also transport them to the working area of ​​the pipe jacking machine by the weight of the replacement short pipe itself. After the jacking is completed, it can automatically reset and wait for the replacement short pipe to be repositioned, thereby effectively improving the work efficiency of the workers. Attached Figure Description

[0020] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0021] Figure 1 A schematic diagram of the structure for the cooperation between trenchless pipeline support device and inspection well for municipal drainage pipelines; Figure 2 A magnified three-dimensional structural diagram of a trenchless pipeline support device for municipal drainage pipelines; Figure 3 An enlarged three-dimensional structural diagram showing the cooperation of the supporting steel plate, the first contact plate, and the second elastic plate; Figure 4 An enlarged three-dimensional structural diagram showing the cooperation between the second contact plate, the connecting column, and the second threaded column; Figure 5 Enlarged three-dimensional structural diagram of the supporting steel plate and the first fixed cylinder; Figure 6An enlarged three-dimensional structural diagram of the first contact plate, the sliding cylinder, and the first elastic plate in combination; Figure 7 An enlarged three-dimensional structural diagram of the first rotating column, the first sliding column, and the semi-circular movable buckle; Figure 8 An enlarged three-dimensional structural diagram of the first sliding column, the second sliding column, and the T-shaped steel plate in combination; Figure 9 A magnified three-dimensional schematic diagram of the semi-circular movable buckle; Figure 10 An enlarged three-dimensional structural diagram of the rotating disk, the fourth fixed cylinder, and the roller in combination; Figure 11 A magnified three-dimensional structural diagram of the second sliding column and the T-shaped steel plate in combination; Figure 12 An enlarged three-dimensional structural diagram of the second sliding cylinder, the second threaded column, and the contacting disk; Figure 13 An enlarged three-dimensional structural diagram of the second rotating column, the second tension spring, and the L-shaped steel plate in combination; Figure 14 An enlarged three-dimensional structural diagram of the L-shaped steel plate, the first clamping column, and the second clamping column.

[0022] Figure label: 1. Supporting steel plate; 2. First sliding groove; 3. Second sliding groove; 4. Second clearance groove; 5. Second fixed cylinder; 6. Fifth sliding groove; 7. First clearance groove; 8. First fixed cylinder; 9. Third rotating groove; 10. Fourth rotating groove; 11. First rotating groove; 12. Second rotating groove; 13. First elastic plate; 14. First contact plate; 15. Sliding cylinder; 16. Limiting pin; 17. Second elastic plate; 18. First rotating column; 19. First rotating protrusion; 20. First rotating handle; 21. First sliding column; 22. Third sliding groove; 23. Third fixed cylinder; 24. Spring; 25. Semi-circular movable buckle; 26. Rotating disk; 27. Second limiting hole; 28. Fourth fixed cylinder; 29. ​​Roller; 30. Second sliding column; 31. First sliding protrusion; 32. Sliding round hole; 33. T-shaped steel plate; 34. Square fixing plate; 35. 36. First sliding cylinder; 37. First limiting plate; 38. Guide plate; 39. Second sliding cylinder; 40. Second limiting plate; 41. Abutting disc; 42. First fixing block; 43. Second threaded groove; 44. Second rotating column; 45. Second tension spring; 46. Second rotating protrusion; 47. Third rotating handle; 48. L-shaped steel plate; 49. Fourth sliding groove; 50. Third clearance groove; 51. First clamping column; 52. Third elastic plate; 53. Circular fixing plate; 54. Second clamping column; 55. Connecting cylinder; 56. Third threaded groove; 57. Second threaded column; 58. Third rotating protrusion; 59. Fourth rotating handle; 60. Second abutting plate; 61. Fifth rotating groove; 62. First threaded column; 63. Second rotating handle; 64. First tension spring; 65. First threaded groove; 66. First limiting hole; 67. Sliding block; 68. Pipe jacking machine.

[0023] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0024] The following is a detailed description of a trenchless pipeline support device for municipal drainage pipelines provided by the present invention, with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0025] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0026] like Figures 1 to 14 As shown, an embodiment of the present invention provides a trenchless pipeline support device for municipal drainage pipelines, including a support steel plate 1, which is a square metal plate. A first sliding groove 2 is formed on the outer wall of the support steel plate 1 near the middle, and the first sliding groove 2 is a square groove. Second sliding grooves 3 are symmetrically formed on both sides of the outer wall of the support steel plate 1 near the first sliding groove 2, and the second sliding grooves 3 are square grooves. First clearance grooves 7 are symmetrically formed on the outer walls of both sides of the support steel plate 1 near the top, and the first clearance grooves 7 are square grooves. A first fixed cylinder 8 is fixedly connected to the inner wall of the first clearance groove 7, and the first fixed cylinder 8 is a metal cylinder. A second clearance groove 4 is formed on the outer wall of the support steel plate 1 near the bottom, and the second clearance groove 4 is a square groove. A support assembly is used to fix the pipe jacking machine 68 and protect the inner wall of the inspection well. The support assembly is connected to the support steel plate 1.

[0027] By setting up support components, not only can the reaction force generated by the pipe jacking machine 68 be offset during its jacking, preventing damage to the inner wall of the inspection well due to the reaction force, but the replacement short pipe can also be transported into the inspection well by its own weight, and the replacement short pipe can be limited and supported, providing convenience for the subsequent jacking operation of the pipe jacking machine 68, thereby improving the work efficiency of the staff.

[0028] like Figures 1 to 6As shown, the support assembly includes two second fixed cylinders 5, which are metal cylinders. The two second fixed cylinders 5 are symmetrically fixedly connected to the inner walls of the two sides of the second clearance groove 4. A fifth sliding groove 6 is provided on the end wall of the second fixed cylinder 5. The fifth sliding groove 6 is a circular groove. A sliding cylinder 15 is slidably connected to the inner wall of the fifth sliding groove 6. The sliding cylinder 15 is a circular metal cylinder. The outer contour of the sliding cylinder 15 matches the inner contour of the fifth sliding groove 6, so the sliding cylinder 15 can slide on the inner wall of the fifth sliding groove 6. A first abutment plate 14 is fixedly connected to the end of the sliding cylinder 15 away from the second fixed cylinder 5. The first abutment plate 14 is a square metal plate in general view, and its... The bottom end is provided with an outwardly expanding arc, which can provide guidance during the insertion of the pipe jacking machine 68. Two first elastic plates 13 are fixedly connected to the outer wall of the first contact plate 14 near the second fixed cylinder 5. The first elastic plates 13 are C-shaped metal plates, and the two first elastic plates 13 are symmetrical about the second fixed cylinder 5. When the first elastic plate 13 is subjected to force, it will deform along its bending direction. Second elastic plates 17 are symmetrically fixedly connected to the outer walls of the two sides near the bottom of the supporting steel plate 1. The second elastic plates 17 are C-shaped metal plates, and the end of the second elastic plate 17 away from the supporting steel plate 1 is open. When the second elastic plate 17 is subjected to force, it will deform along its bending direction.

[0029] A connecting cylinder 54 is rotatably connected to the outer wall of the first fixed cylinder 8. The connecting cylinder 54 is a hollow metal cylinder, and its inner wall profile matches the outer wall profile of the first fixed cylinder 8, allowing the connecting cylinder 54 to rotate on the outer wall of the first fixed cylinder 8. A connecting post 55 is fixedly connected to the outer wall of the connecting cylinder 54. The connecting post 55 is a square metal cylinder with an arc at one end, and a third threaded groove 56 is formed on the top outer wall of the connecting post 55. The third threaded groove 56 is a circular groove with threads on its inner wall. A second threaded post 57 is screwed onto the inner wall of the third threaded groove 56. The second threaded post 57 is a metal cylinder with threads on its outer wall, and its outer wall profile matches the inner wall profile of the third threaded groove 56, allowing the second threaded post 57 to be screwed onto the inner wall of the third threaded groove 56. A fourth rotating handle 59 is fixedly connected to the top of the second threaded post 57. The handle 59 is a metal cylinder with anti-slip grooves on its outer wall to prevent slippage when rotating the fourth rotating handle 59. The bottom end of the second threaded column 57 is fixedly connected to a third rotating protrusion 58, which is a convex metal cylinder. The fourth rotating handle 59, the second threaded column 57, and the third rotating protrusion 58 are an integrated structure. Rotating the fourth rotating handle 59 can drive the second threaded column 57 and the third rotating protrusion 58 to rotate. The bottom end of the second threaded column 57 is rotatably connected to a second abutment plate 60, which is an arc-shaped metal plate. The top of the second abutment plate 60 is provided with a fifth rotating groove 61 near the outer wall of the second threaded column 57. The fifth rotating groove 61 is a convex circular groove. The outer contour of the third rotating protrusion 58 matches the inner contour of the fifth rotating groove 61, so the third rotating protrusion 58 can rotate on the inner wall of the fifth rotating groove 61.

[0030] Before use, the workers first place the pipe jacking machine 68 into the inspection well using a crane, and then use the crane to place the support base into the inspection well. With the assistance of the workers, and guided by the curved end of the first contact plate 14, the pipe jacking machine 68 is secured. During the securing process, the first elastic plate 13 will be subjected to force and deform along its bending direction. At this time, the two sliding cylinders 15 will slide along the inner walls of the two fifth sliding grooves 6 towards the sides of the support steel plate 1, while the first elastic plate 13 will push the first contact plate 14 towards the central axis of the second clearance groove 4 under its own elasticity. The pipe jacking machine 68 is clamped and fixed in place. The outer walls of the two second elastic plates 17 near their respective open ends abut against the inner wall of the inspection well. Then, the fourth rotating handle 59 is rotated clockwise, causing the second threaded column 57 to rotate and move along the inner wall of the third threaded groove 56 toward the bottom of the supporting steel plate 1. The second abutting plate 60 moves with the second threaded column 57 until the bottom outer wall of the second abutting plate 60 abuts against the ground near the top of the inspection well. During this process, the second abutting plate 60 can be moved so that the diameter of the arc formed by the two second abutting plates 60 is larger than the diameter of the inspection well.

[0031] When the pipe jacking machine 68 is started, the reaction force of the pipe jacking machine 68 will act on the first abutment plate 14, which will drive the sliding cylinder 15 and the support steel plate 1 to move towards the inner wall of the inspection well. At this time, the second elastic plate 17 will be stressed and deform along its bending direction, thus offsetting the reaction force of the pipe jacking machine 68. Since the force of the pipe jacking machine 68 acts on the outer wall of the support steel plate 1 near the bottom, the top of the support steel plate 1 will tend to tilt forward. At this time, the second abutment plate 60 will abut against the ground to prevent the support steel plate 1 from tilting forward, further offsetting the reaction force caused by the pipe jacking machine 68. The above structural settings can not only offset the reaction force of the pipe jacking machine 68 during jacking and avoid the reaction force acting on the inner wall of the inspection well and causing damage, but also rotate the fourth rotating handle 59 according to the depth of the inspection well, so that the second abutment plate 60 abuts against the ground, which can both fix the support steel plate 1 and further offset the reaction force of the pipe jacking machine 68.

[0032] like Figures 2 to 5 and Figures 7 to 10As shown, a first rotating groove 11 is formed on the bottom inner wall of the second sliding groove 3. The first rotating groove 11 is a circular groove with a convex structure. A second rotating groove 12 is formed on the top inner wall of the second sliding groove 3. The second rotating groove 12 is a circular groove. A first rotating column 18 is rotatably connected to the inner wall of the first rotating groove 11. The first rotating column 18 is a metal cylinder with threads on its outer wall near the bottom end. A first rotating protrusion 19 is fixedly connected to one end of the first rotating column 18 near the first rotating groove 11. The first rotating protrusion 19 is a convex metal cylinder, and the outer contour of the first rotating protrusion 19 matches the inner contour of the first rotating groove 11. Therefore, the first rotating protrusion 19 can rotate on the inner wall of the first rotating groove 11. The outer contour of the column 18 is adapted to the inner contour of the second rotating groove 12. Therefore, the end of the first rotating column 18 away from the first rotating protrusion 19 passes through the second rotating groove 12 and rotates on the inner wall of the second rotating groove 12. The end of the first rotating column 18 away from the first rotating groove 11 is fixedly connected to the first rotating handle 20. The first rotating handle 20 is a metal cylinder with anti-slip grooves on its outer wall. The first rotating handle 20, the first rotating column 18 and the first rotating protrusion 19 are an integrated structure. When the first rotating handle 20 is rotated, the first rotating column 18 and the first rotating protrusion 19 will rotate with it. The outer wall of the first rotating column 18 near the first rotating protrusion 19 is screwed with the first sliding column 21. The first sliding column 21 is a square metal column.

[0033] A first threaded groove 65 is provided on the top outer wall of the first sliding post 21 near the first rotating post 18. The first threaded groove 65 is a circular groove with threads on its inner wall, and the inner wall contour of the first threaded groove 65 is adapted to the outer wall contour of the first rotating post 18. Since the outer wall contour of the first sliding post 21 is adapted to the inner wall contour of the second sliding groove 3, the first sliding post 21 can slide on the inner wall of the second sliding groove 3. When the first rotating handle 20 is rotated, the first sliding post 21 will be limited by the second sliding groove 3 as the first rotating post 18 rotates, and slide along the outer wall of the first rotating post 18 within the range where the threads are provided. A semi-circular movable buckle 25 is fixedly connected to the top outer wall of the first sliding post 21.

[0034] The semi-circular movable buckle 25 is made of metal, and a first limiting hole 66 is formed on the outer wall near the top of the semi-circular movable buckle 25. The first limiting hole 66 is a circular groove, and a limiting pin 16 is inserted into the first limiting hole 66. The limiting pin 16 is a nail-shaped metal cylinder, and the outer contour of the limiting pin 16 matches the inner contour of the first limiting hole 66, so the limiting pin 16 can be inserted into the first limiting hole 66. The semi-circular movable buckle 25 is fixedly connected to a rotating disk 26 by screws. The rotating disk 26 is a hollow metal disk, and the inner contour of the rotating disk 26 matches the outer contour of the screws, so the rotating disk 26 can rotate within the semi-circular movable buckle 25. Several second limiting holes 27 are formed on the outer wall of the rotating disk 26 in a circumferential array. The second limiting holes 27 are circular grooves, and the second limiting holes 27 are circular grooves. The inner wall contour of the limit pin 16 is adapted to the outer wall contour of the limit pin 16. Therefore, the limit pin 16 can pass through the first limit hole 66 and then through the second limit hole 27 to fix the rotating disk 26 with the adjusted rotation angle. A fourth fixed cylinder 28 is fixedly connected to the outer wall of the rotating disk 26. The fourth fixed cylinder 28 is composed of a metal cylinder and two metal circular plates. The two metal circular plates are located at the two ends of the metal cylinder. A roller 29 is rotatably connected to the outer wall of the fourth fixed cylinder 28. The roller 29 is a hollow metal cylinder. The inner wall of the roller 29 is adapted to the outer wall contour of the metal cylinder in the middle of the fourth fixed cylinder 28. Therefore, the roller 29 can rotate on the outer wall of the fourth fixed cylinder 28. The two metal circular plates on the fourth fixed cylinder 28 can prevent the roller 29 from sliding off the fourth fixed cylinder 28 when rotating.

[0035] When the first rotating handle 20 is rotated clockwise, the first rotating column 18 and the first rotating protrusion 19 rotate synchronously. Since the first sliding column 21 is limited by the second sliding groove 3, it will not rotate with the first rotating column 18. Therefore, the first sliding column 21 will move along the inner wall of the second sliding groove 3 towards the bottom of the supporting steel plate 1, and drive the semi-circular movable buckle 25, the rotating disk 26, the fourth fixed column, and the roller 29 to move down synchronously. When the first rotating handle 20 is rotated counterclockwise, the first sliding column 21 slides in the opposite direction towards the top of the supporting steel plate 1, and drives the semi-circular movable buckle 25, the rotating disk 26, the fourth fixed column, and the roller 29 to move synchronously, so that the height of the roller 29 can be adjusted as needed. Then, the rotating disk 26 is rotated to a suitable tilt angle, and the limiting pin 16 is inserted into the first limiting hole 66 and the second limiting hole 27 in sequence to lock the rotating disk 26. The above structural design can be adjusted according to the height of the water pipe to be replaced, so that the replacement short pipe is aligned with it, which facilitates subsequent operations. It can also be adjusted according to the diameter of the replacement short pipe, so that the roller 29 can support replacement short pipes of different specifications.

[0036] like Figure 2 , Figure 7 , Figure 8 , Figure 11 and Figure 12 As shown, a third sliding groove 22 is formed on one outer wall of the first sliding column 21. The third sliding groove 22 is a convex groove. A third fixed cylinder 23 is fixedly connected to the inner wall of the third sliding groove 22. The third fixed cylinder 23 is a metal cylinder. A second sliding column 30 is slidably connected to the outer wall of the third fixed cylinder 23. The second sliding column 30 is a square metal plate. First sliding protrusions 31 are symmetrically fixedly connected to both ends of the second sliding column 30. The first sliding protrusions 31 are convex metal plates, and the outer contour of the first sliding protrusions 31 matches the inner contour of the third sliding groove 22. Therefore, the first sliding protrusions 31 can slide on the inner wall of the third sliding groove 22. The outer wall of the sliding protrusion 31 is provided with a sliding circular hole 32. The sliding circular hole 32 is a circular groove, and the inner wall contour of the sliding circular hole 32 is adapted to the outer wall contour of the third fixed cylinder 23. Therefore, the first sliding protrusion 31 can slide on the outer wall of the third fixed cylinder 23. A spring 24 is sleeved on the outer wall of the third fixed cylinder 23. The spring 24 is made of metal, and one end of the spring 24 is fixedly connected to the inner wall of the third sliding groove 22 away from the first rotating column 18. The other end is fixedly connected to the outer wall of the first sliding protrusion 31 away from the first rotating column 18. When the spring 24 is subjected to force, it will deform along its bending direction. The spring 24 is a prior art and will not be described in detail.

[0037] A T-shaped steel plate 33 is fixedly connected to the top outer wall of the second sliding column 30. The T-shaped steel plate 33 is a T-shaped metal plate. First sliding cylinders 35 are slidably connected to the outer walls of the T-shaped steel plate 33 near both ends. The inner wall contours of the two first sliding cylinders 35 are respectively adapted to the outer wall contours of the T-shaped steel plate 33 near both ends. Therefore, the two first sliding cylinders 35 can slide on the outer walls of the T-shaped steel plate 33 near both ends. A first limiting plate 36 is fixedly connected to one side outer wall of the first sliding cylinder 35. The first limiting plate 36 is an arc-shaped metal plate used to limit and guide the two sides of the replacement short tube. A guide plate 37 is fixedly connected to the top outer wall of the T-shaped steel plate 33. The guide plate 37 is an arc-shaped metal plate used to guide the replacement short tube when it is placed. Square fixing plates 34 are symmetrically fixed to both ends of the T-shaped steel plate 33. The square fixing plates 34 are square metal plates used to prevent the two first sliding cylinders 35 from sliding on the outer walls of the T-shaped steel plate 33. A sliding cylinder 35 slides out from both ends of the T-shaped steel plate 33, and the T-shaped steel plate 33 and the two square fixing plates 34 are an integrated structure. A second sliding cylinder 38 is slidably connected to the outer wall of the T-shaped steel plate 33 near the bottom end. The second sliding cylinder 38 is a hollow square metal cylinder, and the inner wall contour of the second sliding cylinder 38 is adapted to the outer wall contour of the T-shaped steel plate 33 near the bottom end. Therefore, the first sliding cylinder 35 can slide on the outer wall of the T-shaped steel plate 33 near the bottom end, and the second sliding cylinder 38... A second limiting plate 39 is fixedly connected to the outer side wall. The second limiting plate 39 is a square metal plate. The second limiting plate 39 can cooperate with the roller 29 mentioned above to lift the replacement short pipe. A contact disc 40 is fixedly connected to the other side of the second sliding cylinder 38. The contact disc 40 is a metal disc, and the outer wall of the contact disc 40 away from the second sliding cylinder 38 abuts against one end of the telescopic rod on the pipe jacking machine 68. The telescopic rod of the pipe jacking machine 68 can push the contact disc 40 to move.

[0038] A first fixing block 41 is fixedly connected to the outer wall of the second sliding column 30 near the spring 24. The first fixing block 41 is a square metal column with an arc. A second threaded groove 42 is formed on the top outer wall of the first fixing block 41. The second threaded groove 42 is a circular groove with threads on its inner wall. A first threaded post 62 is screwed onto the inner wall of the second threaded groove 42. The first threaded post 62 is a metal cylinder with threads on its outer wall. A second rotating handle 63 is fixedly connected to the bottom end of the first threaded post 62. The first threaded column 62 is a metal cylinder with anti-slip grooves on its outer wall. The second rotating handle 63 and the first threaded column 62 are integrated structures. The second rotating handle 63 can be rotated to make the first threaded column 62 rotate synchronously. A first tension spring 64 is sleeved on the outer wall of the first threaded column 62. One end of the first tension spring 64 is fixedly connected to the outer wall of the top of the first fixing block 41, and the other end is fixedly connected to the bottom outer wall of the second limiting plate 39. When the first tension spring 64 is subjected to force, it will deform along its bending direction. The first tension spring 64 is a prior art and will not be described in detail.

[0039] The operator first slides the two first sliding cylinders 35 according to the diameter of the replacement short tube, so that the distance between the two first limiting plates 36 is consistent with the diameter of the replacement short tube. Then, when the second rotating handle 63 is rotated clockwise, the first threaded column 62 will rotate and move along the inner wall of the second threaded groove 42 towards the second limiting plate 39, and push the second limiting plate 39 to drive the second sliding cylinder 38 to move along the outer wall of the T-shaped steel plate 33 towards the top of the T-shaped steel plate 33. At this time, the first tension spring 64 will be under tension and will move along the bending direction. When the operator rotates the second rotating handle 63 counterclockwise, the first threaded post 62 will rotate and move away from the second limiting plate 39 along the inner wall of the second threaded groove 42. At this time, the end of the first threaded post 62 away from the second rotating handle 63 no longer touches the bottom of the second limiting plate 39. The first tension spring 64 will no longer be under force and will deform along its bending direction, pulling the second limiting plate 39 towards the bottom of the T-shaped steel plate 33, and driving the second sliding cylinder 38 to move synchronously along the outer wall of the T-shaped steel plate 33 near the bottom.

[0040] When the pipe jacking machine 68 is started, the telescopic rod on the pipe jacking machine 68 will abut against the abutting disc 40 and push the abutting disc 40 to move away from the supporting steel plate 1, and drive the T-shaped steel plate 33 to move synchronously. At this time, the second sliding column 30 will move away from the supporting steel plate 1 along the inner wall of the third sliding groove 22 under the drive of the T-shaped steel plate 33. This will cause the spring 24 to be stressed and deform along its bending direction. The replacement short pipe placed on the second limiting plate 39 will be pushed towards the water pipe to be replaced. After the jacking is completed, the spring 24 will no longer be stressed and will restore its deformation along its bending direction and push the second sliding column 30 to reset. At this time, the T-shaped steel plate 33 will also reset under the drive of the second sliding column 30, waiting for the next replacement short pipe to be placed. The above structural settings can not only adapt to replacement short pipes of different diameters, but also cooperate with the roller 29 to lift and limit them, so that the replacement short pipe and the water pipe to be replaced are coaxially aligned, which is convenient for the pipe jacking machine 68 to jack in the future.

[0041] like Figure 2 , Figure 13 and Figure 14As shown, a third rotating groove 9 is formed on the bottom inner wall of the first sliding groove 2. The third rotating groove 9 is a convex groove. A fourth rotating groove 10 is formed on the top inner wall of the first sliding groove 2. The fourth rotating groove 10 is a circular groove. A second rotating column 43 is rotatably connected to the inner wall of the third rotating groove 9. The second rotating column 43 is a metal cylinder with threads on its outer wall near the bottom. A second rotating protrusion 45 is fixedly connected to the bottom end of the second rotating column 43. The second rotating protrusion 45 is a convex metal cylinder, and the outer contour of the second rotating protrusion 45 matches the inner contour of the third rotating groove 9. Therefore, the second rotating protrusion 45 can rotate on the inner wall of the third rotating groove 9. A third rotating handle 46 is fixedly connected to the top end of the second rotating column 43. The third rotating handle 46 is a metal cylinder with anti-slip grooves on its outer wall. The third rotating handle 46, the second rotating column 43, and the second rotating protrusion 45 are an integrated structure. Therefore, when the third rotating handle 46 is rotated, the second rotating column 43... The second rotating protrusion 45 rotates synchronously. A sliding block 67 is screwed onto the outer wall of the second rotating column 43 near the second rotating protrusion 45. The sliding block 67 is a square metal block with a threaded groove on its top. The outer contour of the sliding block 67 matches the inner contour of the first sliding groove 2, so the sliding block 67 can slide on the inner wall of the first sliding groove 2. The inner contour of the sliding block 67 matches the outer contour of the second rotating column 43, so the second rotating column 43 can slide... The moving block 67 rotates on the inner wall, and an L-shaped steel plate 47 is slidably connected to the outer wall of the second rotating column 43. The L-shaped steel plate 47 is a metal plate with an L-shaped structure. A second tension spring 44 is sleeved on the outer wall of the second rotating column 43. One end of the second tension spring 44 is fixedly connected to the top inner wall of the first sliding groove 2, and the other end is fixedly connected to the top outer wall of the L-shaped steel plate 47. When the second tension spring 44 is subjected to force, it will deform along its bending direction. The second tension spring 44 is a prior art disclosure, so it will not be described in detail.

[0042] A fourth sliding groove 48 is provided on the top outer wall of the L-shaped steel plate 47 near the second rotating column 43. The fourth sliding groove 48 is a circular groove, and the inner wall contour of the fourth sliding groove 48 is adapted to the outer wall contour of the second rotating column 43. Therefore, the L-shaped steel plate 47 can slide on the outer wall of the second rotating column 43. Since the outer wall contour of the L-shaped steel plate 47 is adapted to the inner wall contour of the first sliding groove 2, the L-shaped steel plate 47 can slide on the inner wall of the first sliding groove 2. Therefore, when the L-shaped steel plate 47 slides along the outer wall of the second rotating column 43, it will be limited by the first sliding groove 2 and will not rotate on the outer wall of the second rotating column 43. A third clearance groove 49 is provided on the outer wall of the L-shaped steel plate 47 away from the second rotating column 43. The third clearance groove 49 is a square groove with arcs at both ends. One end of the first clamping column 50 is fixedly connected to the outer wall of the L-shaped steel plate 47 near the third clearance groove 49. The first clamping column 50 is a metal cylinder, and the other end of the first clamping column 50 is open. A third elastic plate 51 is fixedly connected to the outer wall of the L-shaped steel plate 47 away from the first clamping column 50. The third elastic plate 51 is a C-shaped metal plate. When the third elastic plate 51 is subjected to force, it will deform along its bending direction. A circular fixing plate 52 is fixedly connected to the end of the third elastic plate 51 away from the L-shaped steel plate 47. The circular fixing plate 52 is a circular metal plate. A second clamping column 53 is fixedly connected to the outer wall of the circular fixing plate 52 away from the third elastic plate 51. The second clamping column 53 is a cylinder, and the outer wall contour of the second clamping column 53 matches the inner wall contour of the third clearance groove 49. Therefore, the end of the second clamping column 53 away from the circular fixing plate 52 passes through the third clearance groove 49 and can slide on the inner wall of the third clearance groove 49. The circular fixing plate 52 can prevent the second clamping column 53 from sliding out of the third clearance groove 49.

[0043] When the worker places the replacement tube between the first clamping post 50 and the second clamping post 53, the second clamping post 53 will slide along the inner wall of the third clearance groove 49 towards the top of the L-shaped steel plate 47, according to the thickness of the replacement tube, and drive the circular fixing plate 52 to move. At this time, the third elastic plate 51 will be subjected to force and deform along its bending direction, and at the same time, it will recover its deformation under its own elasticity, driving the second clamping post 53 to form a clamping force, which, together with the first clamping post 50, clamps the replacement tube. After the worker releases it, the replacement tube will, under its own gravity, drive the L-shaped steel plate 47 along the first sliding groove 2. The inner wall moves towards the bottom of the supporting steel plate 1. At this time, the second tension spring 44 will be stressed and deform along its bending direction. To ensure that the L-shaped steel plate 47 slides down to be flush with the water pipe to be replaced, the third rotating handle 46 can be rotated to make the sliding block 67 slide along the inner wall of the first sliding groove 2 to a suitable position. If the weight of the replacement short pipe is too heavy, a rope can be tied to the L-shaped steel plate 47 to slow down its falling speed. The workers outside the inspection well can hold it to assist in controlling the falling. If the weight of the replacement short pipe is too light, a rope can also be tied to the L-shaped steel plate 47 to be held by the workers inside the inspection well to assist in guiding the falling.

[0044] When the pipe jacking machine 68 is started, as it pushes out the replacement short pipe between the first clamping column 50 and the second clamping column 53, the second tension spring 44 will no longer be under force and will recover its deformation along its bending direction. It will also pull the L-shaped steel plate 47 to slide along the inner wall of the first sliding groove 2 towards the top of the supporting steel plate 1. The first clamping column 50 and the second clamping column 53 will also move accordingly. At the same time, the third elastic plate 51 will no longer be under force and will recover its deformation along its bending direction, causing the second clamping column 53 to slide along the inner wall of the third clearance groove 49 towards the first clamping column 50, thereby completing the reset and waiting for the placement of a new replacement short pipe. The above structural settings can not only adapt to replacement short pipes of different thicknesses, but also use the weight of the replacement short pipe itself to transport it to the working area of ​​the pipe jacking machine 68. Furthermore, it can automatically reset after the jacking is completed, waiting for the replacement short pipe to be placed again, thereby effectively improving the work efficiency of the workers.

[0045] The workflow of the technical solution provided by this invention is as follows: Before use, the workers first use a crane to place the pipe jacking machine 68 into the inspection well, and then use the crane to place the support base into the inspection well. With the assistance of the workers, and in conjunction with the guide at the curved end of the first contact plate 14, the pipe jacking machine 68 is secured. During the securing process, the first elastic plate 13 will be subjected to force and deform along its bending direction. At this time, the two sliding cylinders 15 will slide along the inner walls of the two fifth sliding grooves 6 towards both sides of the support steel plate 1. Simultaneously, the first elastic plate 13 will push the first contact plate 14 towards the central axis of the second clearance groove 4 under its own elasticity, thus securing the pipe jacking machine 68. The pipe jacking machine 68 forms a clamping effect, thereby fixing the pipe jacking machine 68. The outer walls of the two second elastic plates 17 near their respective free ends will abut against the inner wall of the inspection well. Then, the fourth rotating handle 59 is rotated clockwise, which drives the second threaded column 57 to rotate and move along the inner wall of the third threaded groove 56 towards the bottom of the supporting steel plate 1. The second abutting plate 60 will move with the second threaded column 57 until the bottom outer wall of the second abutting plate 60 abuts against the ground near the top of the inspection well. During this process, the second abutting plate 60 can be moved so that the diameter of the arc formed by the two second abutting plates 60 is larger than the diameter of the inspection well.

[0046] When the pipe jacking machine 68 is started, the reaction force of the pipe jacking machine 68 will act on the first abutment plate 14, causing the sliding cylinder 15 and the support steel plate 1 to move towards the inner wall of the inspection well. At this time, the second elastic plate 17 will be subjected to force and deform along its bending direction, which will counteract the reaction force of the pipe jacking machine 68. Since the force of the pipe jacking machine 68 acts on the outer wall of the support steel plate 1 near the bottom, the top of the support steel plate 1 will tend to tilt forward. The second abutment plate 60 will abut against the ground to prevent this tilting forward, further counteracting the reaction force generated by the pipe jacking machine 68.

[0047] Before placing the replacement short tube, the staff can first rotate the first rotating handle 20 to adjust the position of the first sliding column 21: When the first rotating handle 20 is rotated clockwise, the first rotating column 18 and the first rotating protrusion 19 rotate synchronously. Since the first sliding column 21 is limited by the second sliding groove 3, the first sliding column 21 will not rotate with the first rotating column 18. Therefore, the first sliding column 21 will move along the inner wall of the second sliding groove 3 towards the bottom of the supporting steel plate 1, and drive the semi-circular movable buckle 25, the rotating disk 26, the fourth fixed column and the roller 29 to move down synchronously. When the first rotating handle 20 is rotated counterclockwise, the first sliding column 21 slides in the opposite direction to the top of the supporting steel plate 1, and drives the semi-circular movable buckle 25, the rotating disk 26, the fourth fixed column and the roller 29 to move synchronously. Thus, the height of the roller 29 can be adjusted as needed. Then, the rotating disk 26 is rotated to a suitable tilt angle, and the limiting pin 16 is inserted into the first limiting hole 66 and the second limiting hole 27 in sequence to lock the rotating disk 26.

[0048] When the worker places the replacement tube between the first clamping post 50 and the second clamping post 53, the second clamping post 53 will slide along the inner wall of the third clearance groove 49 towards the top of the L-shaped steel plate 47 according to the thickness of the replacement tube, and drive the circular fixing plate 52 to move. At this time, the third elastic plate 51 will be stressed and deformed along its bending direction, and at the same time, it will recover its deformation under its own elasticity, driving the second clamping post 53 to form a clamping force, which, together with the first clamping post 50, clamps the replacement tube. After the worker releases it, the replacement tube will move the L-shaped steel plate 47 under its own gravity. Plate 47 moves along the inner wall of the first sliding groove 2 toward the bottom of the supporting steel plate 1. At this time, the second tension spring 44 will be stressed and deform along its bending direction. To ensure that the L-shaped steel plate 47 slides down to be flush with the water pipe to be replaced, the third rotating handle 46 can be rotated to make the sliding block 67 slide along the inner wall of the first sliding groove 2 to an appropriate position. If the weight of the replacement short pipe is too heavy, a rope can be tied to the L-shaped steel plate 47 and pulled by the staff outside the inspection well to slow down the falling speed. If the weight of the replacement short pipe is too light, the staff inside the inspection well can pull the rope to assist in the falling.

[0049] According to the diameter of the replacement short tube, slide the two first sliding cylinders 35 respectively so that the distance between the two first limiting plates 36 matches the diameter of the replacement short tube. When the second rotating handle 63 is rotated clockwise, the first threaded column 62 will rotate and move along the inner wall of the second threaded groove 42 towards the second limiting plate 39, pushing the second limiting plate 39 to drive the second sliding cylinder 38 to move along the outer wall of the T-shaped steel plate 33 near the bottom towards its top. At this time, the first tension spring 64 will be stretched and deformed along its bending direction. When the operator rotates the second rotating handle 63 counterclockwise, the first threaded column 62 will rotate and move along the inner wall of the second threaded groove 42 away from the second limiting plate 39. The end away from the second rotating handle 63 will no longer touch the bottom of the second limiting plate 39. The first tension spring 64 will restore its deformation along its bending direction, pulling the second limiting plate 39 towards the bottom of the T-shaped steel plate 33, and driving the second sliding cylinder 38 to move synchronously along the outer wall of the T-shaped steel plate 33 near the bottom.

[0050] After the pipe jacking machine 68 is started, its telescopic rod will abut against the abutment disc 40, pushing the abutment disc 40 to move away from the supporting steel plate 1, and causing the T-shaped steel plate 33 to move synchronously. At this time, the second sliding column 30 will move away from the supporting steel plate 1 along the inner wall of the third sliding groove 22 under the action of the T-shaped steel plate 33, causing the spring 24 to be stressed and deformed along its bending direction. The replacement short pipe placed on the second limiting plate 39 will be pushed towards the water pipe to be replaced. After the jacking is completed, the spring 24 will no longer be stressed and will recover its deformation along its bending direction, pushing the second sliding column 30 to reset, and the T-shaped steel plate 33 will move away from the supporting steel plate 1. The steel plate 33 will also be reset along with the second sliding column 30. At the same time, after the replacement short tube is pushed out between the first clamping column 50 and the second clamping column 53, the second tension spring 44 is no longer under force and restores its deformation along its bending direction, pulling the L-shaped steel plate 47 to slide along the inner wall of the first sliding groove 2 towards the top of the supporting steel plate 1. The first clamping column 50 and the second clamping column 53 will also move accordingly. In addition, the third elastic plate 51 is no longer under force and restores its deformation along its bending direction, driving the second clamping column 53 to slide along the inner wall of the third clearance groove 49 towards the first clamping column 50, thereby completing the reset and waiting for the placement of a new replacement short tube.

[0051] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the preferred embodiments, while those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0052] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A trenchless pipeline support device for municipal drainage pipelines, characterized in that, The support includes a supporting steel plate, on the outer wall near the middle of the supporting steel plate, a first sliding groove is formed, and second sliding grooves are symmetrically formed on both sides of the outer wall near the first sliding groove. First clearance grooves are symmetrically formed on the outer walls near the top of both sides of the supporting steel plate. A first fixed cylinder is fixedly connected to the inner wall of the first clearance groove. A second clearance groove is formed on the outer wall near the bottom of the supporting steel plate. A support assembly for fixing the pipe jacking machine and protecting the inner wall of the inspection well, the support assembly being connected to the supporting steel plate; The support assembly includes two second fixed cylinders, which are symmetrically arranged on the inner walls of the two sides of the second clearance groove. A fifth sliding groove is provided on the end wall of the second fixed cylinder. A sliding cylinder is slidably connected to the inner wall of the fifth sliding groove. A first abutting plate is fixedly connected to the end of the sliding cylinder away from the second fixed cylinder. Two first elastic plates are fixedly connected to the outer wall of the first abutting plate on the side close to the second fixed cylinder. Second elastic plates are symmetrically arranged on the outer walls of the two sides of the support steel plate near the bottom. A connecting cylinder is rotatably connected to the outer wall of the first fixed cylinder, and a connecting column is fixedly connected to the outer wall of the connecting cylinder. A third threaded groove is opened on the top outer wall of the connecting column, and a second threaded column is screwed onto the inner wall of the third threaded groove. A second abutment plate is rotatably connected to the bottom end of the second threaded column.

2. The trenchless pipeline support device for municipal drainage pipelines according to claim 1, characterized in that, The second sliding groove has a first rotating groove on the bottom inner wall and a second rotating groove on the top inner wall. A first rotating column is rotatably connected to the inner wall of the first rotating groove. A first rotating protrusion is fixedly connected to the end of the first rotating column near the first rotating groove. A first rotating handle is fixedly connected to the end of the first rotating column away from the first rotating groove. A first sliding column is screwed onto the outer wall of the end of the first rotating column near the first rotating protrusion.

3. The trenchless pipeline support device for municipal drainage pipelines according to claim 2, characterized in that, The first sliding column has a first threaded groove on the top outer wall near the first rotating column. The first sliding column has a third sliding groove on one side outer wall. A third fixed cylinder is fixedly connected to the inner wall of the third sliding groove. A second sliding column is slidably connected to the outer wall of the third fixed cylinder. A spring is sleeved on the outer wall of the third fixed cylinder. A semi-circular movable buckle is fixedly connected to the top outer wall of the first sliding column.

4. The trenchless pipeline support device for municipal drainage pipelines according to claim 3, characterized in that, The second sliding column has first sliding protrusions symmetrically arranged at both ends. The outer wall of the first sliding protrusion has a sliding circular hole. A first fixing block is fixedly connected to the middle outer wall of the second sliding column near the spring. A second threaded groove is opened on the top outer wall of the first fixing block. A first threaded column is screwed onto the inner wall of the second threaded groove. A second rotating handle is fixedly connected to the bottom end of the first threaded column. A first tension spring is sleeved on the outer wall of the first threaded column.

5. The trenchless pipeline support device for municipal drainage pipelines according to claim 4, characterized in that, A T-shaped steel plate is fixedly connected to the top outer wall of the second sliding column. A first sliding cylinder is slidably connected to the outer wall of the T-shaped steel plate near both ends. A first limiting plate is fixedly connected to one side outer wall of the first sliding cylinder. A guide plate is fixedly connected to the top outer wall of the T-shaped steel plate. Square fixing plates are symmetrically arranged at both ends of the T-shaped steel plate. A second sliding cylinder is slidably connected to the outer wall of the T-shaped steel plate near the bottom end. A second limiting plate is fixedly connected to one side outer wall of the second sliding cylinder. An abutment disc is fixedly connected to the other side of the second sliding cylinder.

6. The trenchless pipeline support device for municipal drainage pipelines according to claim 3, characterized in that, The semi-circular movable buckle has a first limiting hole on its outer wall near the top, and a limiting pin is inserted into the first limiting hole. The semi-circular movable buckle is fixedly connected to a rotating disk by screws. The outer wall of the rotating disk has several second limiting holes arranged in a circumferential array. A fourth fixing cylinder is fixedly connected to the outer wall of the rotating disk, and a roller is rotatably connected to the outer wall of the fourth fixing cylinder.

7. The trenchless pipeline support device for municipal drainage pipelines according to claim 1, characterized in that, A third rotating groove is formed on the bottom inner wall of the first sliding groove, and a fourth rotating groove is formed on the top inner wall of the first sliding groove. A second rotating column is rotatably connected to the inner wall of the third rotating groove. A second rotating protrusion is fixedly connected to the bottom end of the second rotating column. A third rotating handle is fixedly connected to the top end of the second rotating column. A sliding block is screwed onto the outer wall of the second rotating column near the second rotating protrusion. An L-shaped steel plate is slidably connected to the outer wall of the second rotating column. A second tension spring is sleeved on the outer wall of the second rotating column.

8. The trenchless pipeline support device for municipal drainage pipelines according to claim 7, characterized in that, A fourth sliding groove is provided on the top outer wall of the L-shaped steel plate near the second rotating column. A third clearance groove is provided on the outer wall of the L-shaped steel plate away from the second rotating column. A first clamping column is fixedly connected to the outer wall of the L-shaped steel plate near the third clearance groove. A third elastic plate is fixedly connected to the outer wall of the L-shaped steel plate away from the first clamping column. A circular fixing plate is fixedly connected to the end of the third elastic plate away from the L-shaped steel plate. A second clamping column is fixedly connected to the outer wall of the circular fixing plate away from the third elastic plate.

9. The trenchless pipeline support device for municipal drainage pipelines according to claim 1, characterized in that, The top end of the second threaded post is fixedly connected to a fourth rotating handle, the bottom end of the second threaded post is fixedly connected to a third rotating protrusion, and the top of the second abutment plate is provided with a fifth rotating groove on the outer wall near the second threaded post.

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