A pipeline in-situ replacement device and replacement method

Abstract

The present invention relates to the technical field of renovation of waste pipelines, in particular to a pipeline in-situ replacement device and a replacement method. The following solution is now proposed. It includes placing a traction device in a receiving well, placing a jacking device and a crushing device in a launching well, passing one end of a chain through the waste pipeline from the receiving well into the launching well and fixedly connecting it to the crushing device, placing a new pipeline in a sheath, starting the traction device and the jacking device. The traction device pulls the chain to drive the crushing device to move into the waste pipeline, and the jacking device advances the new pipeline along with the crushing device. Then start the crushing device, and the crushing device expands and crushes the waste pipeline. Every time the crushing device advances a certain distance, synchronously use the jacking device to jack the new pipeline, replacing the waste pipeline with the new pipeline to complete the in-situ replacement of the waste pipeline. The present invention solves the problems that the pulling force generated by the existing traction mechanism is very small, it cannot be self-locked, the traction stroke is not easy to measure, and the operation well requires a large space.

Description

Technical Field

[0001] The present invention relates to the field of renovation of waste pipelines, in particular to a pipeline in-situ replacement device and a replacement method. Background Art

[0002] With the increasing number of old pipe networks in the main urban area, more and more old pipelines are facing various problems such as blockage and damage. At present, in China, a smaller pipeline is often inserted into the existing pipeline to repair and solve the blockage problem. However, this method will reduce the inner diameter of the existing pipeline and the flow capacity.

[0003] There is also a method of using special equipment to dredge the pipeline: repeatedly flushing the original pipeline with a cleaning vehicle, pulling sludge and sundries to the sewage well. The workers in the well use buckets to transport the sludge and sundries to the ground cleaning vehicle, and use a sanitation sewage suction vehicle to pump out the sludge in the sewage well. When encountering pipelines that cannot be cleaned, a crusher needs to be installed. After cutting and crushing the old pipeline, the broken blocks are pushed out of the wellhead by a push rod, and then a series of processes such as well excavation protection are carried out to replace the new pipeline. This method has low efficiency, and the operation process has high requirements for the size of the working well, and the construction cost is high. Therefore, the present invention proposes a pipeline in-situ replacement device and a replacement method. Summary of the Invention

[0004] To solve the problems in the prior art, the present invention proposes a pipeline in-situ replacement device and a replacement method.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] In the first aspect of the present invention, a pipeline in-situ replacement device is proposed, which includes a traction device. The traction device is connected to a crushing device through a chain. The crushing device includes a flange base. A plurality of first crushing plates are rotatably connected to the flange base. The ends of the first crushing plates far from the flange base are all rotatably connected to second crushing plates. A conical block is provided on one side of the flange base. The ends of the second crushing plates far from the first crushing plates are all rotatably connected to the conical block. A second telescopic device is fixedly connected to the flange base. The second telescopic device is located between the conical block and the flange base. The extending end of the second telescopic device is fixedly connected to a hinge disc. Connecting rods are rotatably connected to the first crushing plates, and the connecting rods are all rotatably connected to the hinge disc. A guide sleeve is fixedly connected to the side of the hinge disc far from the first telescopic device. A guide post is slidably connected in the guide sleeve, and the guide post is fixedly connected to the conical block.

[0007] Furthermore, the traction device includes a support base. Two support rods are fixedly connected to the top surface of the support base. On one side of each of the two support rods, a first fixing rod and a second fixing rod are fixedly connected. The first fixing rods are all located above the second fixing rods. A first telescopic device is fixedly connected to the top surface of each second fixing rod. Each first telescopic device includes a main body base and an extension column. The top ends of the extension columns all pass through the first fixing rods, and the extension columns are all slidably connected to the first fixing rods. A first rod is fixedly connected between the two first fixing rods. A second rod is provided above the first rod. The second rod is fixedly connected to both extension columns. Through grooves are formed in the top surfaces of the first rod and the second rod. Two rotating plates are rotatably connected to the top surfaces of the first rod and the second rod. The two rotating plates are both located above the through grooves. The chain passes through the two through grooves. The chain is located between the two rotating plates above each through groove. The chain cooperates with the rotating plates.

[0008] Furthermore, a fourth column is fixedly connected to one end of each rotating plate. The fourth columns are rotatably connected to the first rod and the second rod respectively. Chute grooves are formed in the top surfaces of the first rod and the second rod. A second rack is slidably connected in each chute groove. A second gear is fixedly connected to the outside of the fourth column close to the chute groove. The second racks cooperate with the second gears respectively. A threaded column is provided in the chute groove of the first rod. A fifth column is fixedly connected to the end of the threaded column close to the chain. The other end of the threaded column is fixedly connected to a second column. The fifth column and the second column are both slidably connected to the second rack. The first column and the second column are both rotatably connected to the first rod. The threaded column is threadedly connected to the second rack. A first spring is sleeved on the outside of the fifth column, and a second spring is sleeved on the outside of the second column. A guiding groove is formed at the bottom of the chute groove of the second rod. The two second racks are fixedly connected by a telescopic rod. The telescopic rod passes through the guiding groove. Two mutually meshing fourth gears are rotatably connected to one side of each of the first rod and the second rod. A third gear is fixedly connected to one end of each fourth column. The two fourth gears on the first rod and the second rod mesh with the two third gears respectively.

[0009] Furthermore, a third column is provided above the second rod. The third column is rotatably connected to the two support rods. A winding roller is fixedly connected to the outside of the third column. The winding roller is located between the two support rods. One end of the chain is fixedly connected to the winding roller. A ratchet mechanism is connected to the outside of the third column. The ratchet mechanism is drivingly connected to a first gear. A first rack is fixedly connected to the top surface of the second rod. The first rack meshes with the first gear. One end of the second column passes through the chute groove and the first fixing rod and extends to the outside of the first fixing rod. The third column is drivingly connected to the second column through a pulley assembly.

[0010] Further, the ratchet mechanism includes an inner ratchet and a disc. The disc is located inside the inner ratchet. The inner ratchet is fixedly connected to the third column. One side of the disc is fixedly connected with a rotating sleeve. The rotating sleeve is sleeved outside the third column and rotatably connected to the third column. The rotating sleeve is fixedly connected to the first gear. One side of the disc is rotatably connected with a pawl and fixedly connected with a spring piece. The spring piece is fixedly connected to the pawl.

[0011] Further, two support frames are fixedly connected to the top surface of the support base. A first column is rotatably connected between the two support frames. A sprocket is fixedly connected to the outside of the first column. The endless chain is matched with the sprocket. A driving motor is fixedly connected to the support rod. The output shaft of the driving motor is in transmission connection with the third column.

[0012] Further, it includes a jacking device which cooperates with the crushing device. The flange base is fixedly connected with a sheath.

[0013] In a second aspect of the present invention, a method for replacing a pipeline in situ is proposed. By using the above replacement device, it includes placing the traction device in the receiving well, placing the jacking device and the crushing device in the launching well, passing one end of the endless chain from the receiving well through the waste pipeline into the launching well and fixedly connecting it to the crushing device, placing a new pipeline in the sheath, starting the traction device and the jacking device. The traction device pulls the endless chain to drive the crushing device to move into the waste pipeline. The jacking device advances the new pipeline along with the crushing device. Then start the crushing device. The crushing device expands and crushes the waste pipeline. Then turn off the crushing device. Use the traction device to pull the crushing device a certain distance again. Every time the crushing device advances a certain distance, synchronously use the jacking device to jack the new pipeline. After the jacking device reaches the jacking stroke, retract the jacking device and place another new pipeline again. Use the jacking device to continue jacking to replace the waste pipeline with the new pipeline and complete the in-situ replacement of the waste pipeline.

[0014] Further, the outer diameter of the new pipeline is greater than or equal to the outer diameter of the waste pipeline.

[0015] Further, the diameter of the launching well is 2 - 3m, and the receiving well is an inspection well.

[0016] The beneficial effects of the present invention:

[0017] 1. First, release the chain. Start the driving motor. The output shaft of the driving motor rotates to drive the third column to rotate. The third column rotates to drive the winding roller to rotate. The endless chain wound on the winding roller starts to release the chain. Synchronously, the third column rotates to drive the pulley assembly to rotate. The pulley assembly rotates to drive the second column to rotate. The second column rotates to drive the threaded column to rotate. The interaction between the threaded column and the second rack makes the second rack move towards the direction close to the rotating plate. During the movement of the second rack, it comes into contact with and interacts with the second gear, causing the second gear to rotate. The second gear rotates to drive one of the rotating plates according toFigure 2 The position shown in the figure rotates counterclockwise, and the rotating plate drives the third gear to rotate during the rotation process, and the rotation of the third gear drives a fourth gear to rotate, and the rotation of the fourth gear drives another fourth gear to rotate, and the rotation of the other fourth gear drives another third gear to rotate, so that one end of the two rotating plates on the first rod and the second rod moves upward and away from each other, and the two rotating plates are "opened", and the ring chain lowered by the winding roller passes through the two through grooves and is released downward to lengthen the ring chain, so that the chain can be automatically released during the chain release process, which solves the problem of manually rotating the rotating plate to release the chain;

[0018] 2. After the second rack moves to a certain position in the direction close to the rotating plate, the second rack is located on the fifth column, the first spring is compressed, and under the elastic force of the first spring, the second rack is always in contact with the threaded column, so that when the third column is reversed to drive the pulley assembly to reverse, the second rack can continue to be threadedly connected with the threaded column and move in the opposite direction; as the chain continues to be released, the continued rotation of the third column drives the pulley assembly and the second column to rotate. At this time, the second rack will not move, and the two rotating plates will always remain in an "open" state, so as to achieve the purpose of continuous chain release, avoiding the problem that the rotating plate is stuck and cannot continue to rotate after rotating to a certain angle, resulting in the inability to continuously release the chain;

[0019] 3. After the two rotating plates on the second rod are close to each other and "closed", the chain is tightened. At this time, pay attention to the extension distance of the extension column. As the second rod moves upward, the iron ring in the chain is located above the two rotating plates on the second rod. The end of the two rotating plates close to each other tends to move downward, and the rotating plate body will be supported by the side of the through groove, so that the iron ring is stuck on the upper surface of the two rotating plates, thereby driving the chain to move upward. When the chain passes through the through groove in the first rod, the two rotating plates on the first rod are driven as the chain moves upward, so that the end of the two rotating plates on the first rod close to each other moves upward slightly, so that when the crushing device is pulled, the second rod The two rotating plates on the first rod can be self-locking, and the two rotating plates on the first rod can be opened, so that the chain can be pulled; after the extension column moves upward to a certain distance, the crushing device is moved to the predetermined waste pipe, and the first telescopic device is stopped. The upward movement distance of the first telescopic device is easy to control, and the crushing device can be accurately moved to the predetermined position, so that the traction stroke can be accurately measured and controlled and the chain can generate a large pulling force to pull the crushing device, which solves the problem that the common traction mechanism on the market usually adopts winches, electric hoists, etc., which usually generate very small pulling force, cannot self-lock, and the traction stroke is not easy to measure;

[0020] 4. The extension end of the second telescopic device in the crushing device extends and pushes the hinge plate in the direction close to the conical block. The movement of the hinge plate drives the connecting rod to rotate, and the connecting rod pushes the first crushing plate and the second crushing plate outwards. The first crushing plate and the second crushing plate rotate, and under the pressure of the first crushing plate and the second crushing plate, the waste pipe is crushed outwards, so as to achieve the purpose of crushing and expanding the diameter of the waste pipe.

[0021] 5. Every time the crushing device advances a certain distance, the jacking device is synchronously used to jack the new pipe. After the jacking device reaches the jacking stroke, the jacking device is retracted, and a new pipe is placed again. The jacking device is used to continue jacking, and the new pipe replaces the waste pipe to complete the original position replacement of the waste pipe, solving the problems of low efficiency in the existing technology method, large requirements for the size of the working well in the operation process, and high construction cost. Brief Description of the Drawings

[0022] Figure 1 Front view of the traction device of the present invention;

[0023] Figure 2 Enlarged view of part A of the present invention;

[0024] Figure 3 Rear view of the traction device of the present invention;

[0025] Figure 4 Enlarged view of part B of the present invention;

[0026] Figure 5 Partial structural schematic diagram of the traction device of the present invention;

[0027] Figure 6 Structural schematic diagram of the ratchet mechanism of the present invention;

[0028] Figure 7 Structural schematic diagram of the chain releasing mechanism of the present invention;

[0029] Figure 8 Internal structural schematic diagram of the crushing device of the present invention when it is expanded;

[0030] Figure 9 Internal structural schematic diagram of the crushing device of the present invention when it is tightened;

[0031] Figure 10 Working scenario schematic diagram of the device of the present invention.

[0032] Reference numerals in the figures: 1 waste pipe, 2 drive motor, 3 first rack, 4 second rod, 5 extension column, 6 first fixed rod, 7 first telescopic device, 8 second fixed rod, 9 support frame, 10 support base, 11 first column, 12 sprocket, 13 support rod, 14 second column, 15 telescopic rod, 16 pulley assembly, 17 third column, 18 winding roller, 19 endless chain, 20 first gear, 21 ratchet mechanism, 22 second gear, 23 first rod, 24 third gear, 25 fourth gear, 26 rotating plate, 27 fourth column, 28 first spring, 29 fifth column, 30 second rack, 31 second spring, 32 threaded column, 33 chute, 34 crushing device, 35 sheath, 36 slide rail, 37 new pipe, 38 through slot, 39 inner ratchet, 40 elastic piece, 41 pawl, 42 disc, 43 rotating sleeve, 44 first crushing plate, 45 connecting rod, 46 second crushing plate, 47 hinge disc, 48 guide post, 49 guide sleeve, 50 second telescopic device, 51 flange base, 52 tapered block, 53 workbench frame, 54 jacking device, 55 top plate, 56 traction device. Specific embodiments

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0034] Refer to Figures 1 - 10 :

[0035] Embodiment 1

[0036] A pipeline in-situ replacement device includes a traction device 56. The traction device 56 is connected to a crushing device 34 through a ring chain 19. The crushing device 34 includes a flange base 51. A plurality of first crushing plates 44 are rotatably connected to the flange base 51. In this embodiment, the number of the first crushing plates 44 is four. A second crushing plate 46 is rotatably connected to one end of each first crushing plate 44 away from the flange base 51. A conical block 52 is provided on one side of the flange base 51. One end of each second crushing plate 46 away from the first crushing plate 44 is rotatably connected to the conical block 52. A second telescopic device 50 is fixedly connected to the flange base 51. The second telescopic device 50 includes an oil cylinder, a cylinder, a jack, etc. In this embodiment, the second telescopic device 50 is a jack. The second telescopic device 50 is located between the conical block 52 and the flange base 51. The extending end of the second telescopic device 50 is fixedly connected to a hinge disc 47. A connecting rod 45 is rotatably connected to each first crushing plate 44. The connecting rods 45 are all rotatably connected to the hinge disc 47. A guide sleeve 49 is fixedly connected to one side of the hinge disc 47 away from the first telescopic device 7. A guide post 48 is slidably connected in the guide sleeve 49. The guide post 48 is fixedly connected to the conical block 52. A sheath 35 is fixedly connected to one side of the flange base 51 away from the conical block 52. During use, the crushing device 34 is placed in the waste pipeline 1, and then the second telescopic device 50 is started. The extending end of the second telescopic device 50 extends to push the hinge disc 47 to move away from the flange base 51. The hinge disc 47 drives the connecting rods 45 to move to support the first crushing plates 44 and the second crushing plates 46 outwards, thereby bursting the waste pipeline 1 and extruding it into the soil, so as to achieve the purpose of crushing and expanding the diameter of the waste pipeline 1.

[0037] Embodiment 2

[0038] Based on Embodiment 1, considering that common traction mechanisms on the market usually adopt winches, electric hoists, etc., usually the pulling forces they generate are very small, they cannot self-lock, and the traction stroke is not easy to measure, which is not suitable for cooperating with the jacking device 54 and the crushing device 34 in the present invention. Therefore, in this embodiment, a traction device 56 is proposed. The traction device 56 includes a support base 10. On the top surface of the support base 10, two support rods 13 are fixedly connected. On one side of the two support rods 13, a first fixed rod 6 and a second fixed rod 8 are fixedly connected respectively. The first fixed rods 6 are all located above the second fixed rods 8. On the top surface of the second fixed rods 8, a first telescopic device 7 is fixedly connected respectively. The first telescopic device 7 includes a cylinder, an oil cylinder, a jack, etc. In this embodiment, the first telescopic device 7 is an oil cylinder. The first telescopic device 7 all includes a main body base and an elongation column 5. The top ends of the elongation columns 5 all pass through the first fixed rods 6, and the elongation columns 5 are all slidably connected with the first fixed rods 6. A first rod 23 is fixedly connected between the two first fixed rods 6. Above the first rod 23, there is a second rod 4. The second rod 4 is fixedly connected with the two elongation columns 5 respectively. Through grooves 38 are opened on the top surfaces of the first rod 23 and the second rod 4. On the top surfaces of the first rod 23 and the second rod 4, two rotating plates 26 are rotatably connected respectively. Specifically, one end of each rotating plate 26 is fixedly connected with a fourth column 27. The fourth columns 27 are all rotatably connected with the first rod 23 and the second rod 4. The two fourth columns 27 are both located on both sides of the through groove 38. One end of the two rotating plates 26 close to each other is located above the through groove 38. A chain 19 passes through the two through grooves 38. The chain 19 is located between the two rotating plates 26 above each through groove 38. The chain 19 cooperates with the rotating plates 26. The chain 19 is composed of a plurality of long-shaped ring-shaped iron rings. The planes where each adjacent iron ring is located are perpendicular to each other. When one end of the two rotating plates 26 approaches each other and is located above the through groove 38, the iron rings can be clamped, so that the iron rings cannot fall, so that the two rotating plates 26 can play a self-locking function on the chain 19. Moreover, the pulling force of the oil cylinder is significantly greater than that of the winch and the electric hoist. The elongation distance of the oil cylinder can be accurately controlled, so that the traction stroke of the chain 19 can be controlled, which is convenient for cooperating with the crushing device 34 and the jacking device 54.

[0039] Embodiment 3

[0040] On the basis of Embodiment 2, considering the problems that when the traction device 56 is working and during traction, the drawn chain 19 is too long and not wound up, and when the chain 19 is lowered, it is necessary to manually rotate the rotating plate 26 for the chain 19 to be lowered, making the operation process inconvenient, the following design is made: Sliding grooves 33 are formed on the top surfaces of the first rod 23 and the second rod 4. The sliding grooves 33 are both located below one of the fourth columns 27. Second racks 30 are slidably connected in the sliding grooves 33. Second gears 22 are fixedly connected to the outsides of the fourth columns 27 close to the sliding grooves 33. The second racks 30 are all engaged with the second gears 22. A threaded column 32 is provided in the sliding groove 33 on the first rod 23. One end of the threaded column 32 close to the chain 19 is fixedly connected to a fifth column 29. The other end of the threaded column 32 is fixedly connected to a second column 14. Both the fifth column 29 and the second column 14 are slidably connected to the second rack 30. The first column 11 and the second column 14 are both rotatably connected to the first rod 23. The threaded column 32 is threadedly connected to the second rack 30. A first spring 28 is sleeved on the outside of the fifth column 29. A second spring 31 is sleeved on the outside of the second column 14. A guiding groove is formed at the bottom of the sliding groove 33 on the second rod 4. The two second racks 30 are fixedly connected by a telescopic rod 15. The telescopic rod 15 passes through the guiding groove. Two mutually engaged fourth gears 25 are rotatably connected to one side of each of the first rod 23 and the second rod 4. One end of each of the fourth columns 27 is fixedly connected to a third gear 24. The two fourth gears 25 on the first rod 23 and the second rod 4 are respectively engaged with the two third gears 24 thereon. A third column 17 is provided above the second rod 4. The third column 17 is rotatably connected to the two support rods 13. A winding roller 18 is fixedly connected to the outside of the third column 17. The winding roller 18 is located between the two support rods 13. One end of the chain 19 is fixedly connected to the winding roller 18. A ratchet mechanism 21 is connected to the outside of the third column 17. The ratchet mechanism 21 is drivingly connected to a first gear 20. Specifically, the ratchet mechanism 21 includes an internal ratchet 39 and a disc 42. The disc 42 is located inside the internal ratchet 39. The internal ratchet 39 is fixedly connected to the third column 17. A rotating sleeve 43 is fixedly connected to one side of the disc 42. The rotating sleeve 43 is sleeved on the outside of the third column 17 and is rotatably connected to the third column 17. The rotating sleeve 43 is fixedly connected to the first gear 20. A pawl 41 is rotatably connected to one side of the disc 42 and a spring piece 40 is fixedly connected. The spring piece 40 is fixedly connected to the pawl 41. A first rack 3 is fixedly connected to the top surface of the second rod 4. The first rack 3 is engaged with the first gear 20. One end of the second column 14 passes through the sliding groove 33 and the first fixing rod 6 and extends to the outside of the first fixing rod 6. The third column 17 and the second column 14 are drivingly connected by a pulley assembly 16. A driving motor 2 is fixedly connected to the support rod 13. The output shaft of the driving motor 2 is drivingly connected to the third column 17. Through the cooperation of the above structures, the purpose of winding and unwinding the chain 19 can be achieved.

[0041] Embodiment 4

[0042] On the basis of Embodiment 3, two support frames 9 are fixedly connected to the top surface of the support base 10. A first column 11 is rotatably connected between the two support frames 9. A sprocket 12 is fixedly connected to the outside of the first column 11. The endless chain 19 is engaged with the sprocket 12, and the sprocket 12 serves to guide the endless chain 19. The pipeline in-situ replacement device further includes a jacking device. The jacking device 54 is engaged with the crushing device 34. The jacking device 54 includes a workbench frame 53. A jack is fixedly connected to the workbench frame 53. The jack is horizontal with the workbench frame 53. An extension end of the jack is fixedly connected to a top plate 55. A pulley is fixedly connected to the bottom of the top plate 55. A slide rail 36 is provided on the workbench frame 53. The pulley is slidably connected to the slide rail 36.

[0043] In a second aspect, the present invention provides a method for a pipeline in-situ replacement device, which uses the above-mentioned replacement device, including placing the traction device 56 in the receiving well, placing the jacking device 54 and the crushing device 34 in the launching well, passing one end of the endless chain 19 from the receiving well through the waste pipeline 1 and into the launching well and fixedly connecting it to the crushing device 34, placing a new pipeline 37 in the sheath 35, starting the traction device 56 and the jacking device 54, the traction device 56 pulling the endless chain 19 to drive the crushing device 34 to move into the waste pipeline 1, the jacking device 54 pushing the new pipeline 37 along with the crushing device 34, then starting the crushing device 34, the crushing device 34 expanding and crushing the waste pipeline 1, then closing the crushing device 34, and using the traction device 56 to pull the crushing device 34 a certain distance again. Every time the crushing device 34 advances a certain distance, synchronously use the jacking device 54 to jack the new pipeline 37. After the jacking device 54 reaches the jacking stroke, retract the jacking device 54, and place another new pipeline 37 again, and continue to jack using the jacking device 54 to replace the waste pipeline 1 with the new pipeline 37, completing the in-situ replacement of the waste pipeline 1. The outer diameter of the new pipeline 37 is greater than or equal to the outer diameter of the waste pipeline 1. The diameter of the launching well is 2-3 m. The receiving well can be an inspection well or can be excavated.

[0044] Working principle: At the location where the pipeline needs to be replaced, first excavate a launching well with a diameter of 2-3 m, use the original inspection well as the receiving well, set up the jacking device 54 in the launching well, and set up the traction device 56 in the receiving well;

[0045] First, release the chain. Start the drive motor 2. The output shaft of the drive motor 2 rotates to drive the third column 17 to rotate. The rotation of the third column 17 drives the winding roller 18 to rotate, and the endless chain 19 wound around the winding roller 18 starts to release the chain. Synchronously, the rotation of the third column 17 drives the pulley assembly 16 to rotate. The rotation of the pulley assembly 16 drives the second column 14 to rotate. The rotation of the second column 14 drives the threaded column 32 to rotate. The interaction between the threaded column 32 and the second rack 30 causes the second rack 30 to move towards the rotating plate 26. During the movement of the second rack 30, it comes into contact with and interacts with the second gear 22, causing the second gear 22 to rotate. The rotation of the second gear 22 drives one of the rotating plates 26 to rotate counterclockwise according to the position shown in Figure 2 . During the rotation of this rotating plate 26, it drives the third gear 24 to rotate. The rotation of the third gear 24 drives one of the fourth gears 25 to rotate. The rotation of this fourth gear 25 drives the other fourth gear 25 to rotate. The rotation of the other fourth gear 25 drives the other third gear 24 to rotate. As a result, one end of the two rotating plates 26 on the first rod 23 and the second rod 4 moves upward and away from each other, and the two rotating plates 26 "open up". The endless chain 19 released by the winding roller 18 passes through the two through slots 38 to release the chain, lengthening the endless chain 19. Thus, it can achieve automatic chain release during the chain release process, solving the problem of manually rotating the rotating plate 26 for chain release;

[0046] Among them, after the second rack 30 moves towards the rotating plate 26 to a certain position, the second rack 30 is located on the fifth column 29, and the first spring 28 is compressed. Under the elastic force of the first spring 28, the second rack 30 always contacts the threaded column 32. Thus, when the third column 17 rotates in reverse to drive the pulley assembly 16 to rotate in reverse, the second rack 30 can continue to be threadedly connected to the threaded column 32 and move in the reverse direction. As the chain release continues, the continued rotation of the third column 17 drives the pulley assembly 16 and the second column 14 to rotate. At this time, the second rack 30 will not move, and the two rotating plates 26 will always remain in the "open" state. Thus, it can achieve continuous chain release, avoiding the problem that the rotating plate 26 gets stuck after rotating to a certain angle and cannot continue to rotate, resulting in the inability to continuously release the chain;

[0047] Release the chain so that the length of the endless chain 19 is slightly longer than the length of the area of the waste pipe 1. After releasing the chain, stop the driving motor 2. Pass one end of the endless chain 19 from the receiving well through the waste pipe 1 into the launching well and fixedly connect it to the conical block 52 of the crushing device 34. Place the crushing device 34 at the mouth of a waste pipe 1 near the launching well. Place a new pipe 37 in the sheath 35. Make the top plate 55 of the jacking device 54 fit with the tail of the new pipe 37. Start the traction device 56 and the jacking device 54. The extension column 5 of the first telescopic device 7 of the traction device 56 moves upward, driving the second rod 4 to move upward. The upward movement of the second rod 4 drives the first rack 3 to move upward. The interaction between the first rack 3 and the first gear 20 causes the first gear 20 to rotate. The rotation of the first gear 20 drives the rotating sleeve 43 to rotate. The rotation of the rotating sleeve 43 drives the disc 42 to rotate. The rotation of the disc 42 drives the pawl 41 to move. The pawl 41 pushes the internal ratchet 39 to rotate. The rotation of the internal ratchet 39 drives the third column 17 to rotate. The rotation direction of the third column 17 is opposite to the previous one. The rotation of the third column 17 drives the winding roller 18 to rotate. The winding roller 18 winds up the overly long endless chain 19, and at the same time, it also achieves the purpose of winding the endless chain 19 during the traction process. Synchronously, the rotation of the third column 17 drives the pulley assembly 16, the second column 14, and the threaded column 32 to rotate. The interaction between the threaded column 32 and the second rack 30 causes the second rack 30 to move away from the rotating plate 26. The second rack 30 drives the telescopic rod 15, causing another second rack 30 to move accordingly. The interaction between the second rack 30 and the second gear 22 causes the second gear 22 to rotate. The rotation of the second gear 22 drives the rotating plate 26 to rotate. One end of the two rotating plates 26 moves downward and approaches each other. After the second rack 30 separates from the second gear 22, the second rack 30 completely moves onto the second column 14, and the second spring 31 is compressed;

[0048] After the two rotating plates 26 on the second rod 4 approach each other and "close", the endless chain 19 is tightened. At this time, pay attention to the distance that the extension column 5 extends. As the second rod 4 moves upward, the iron rings in the endless chain 19 are located above the two rotating plates 26 on the second rod 4. One end where the two rotating plates 26 approach each other has a tendency to move downward, and the body of the rotating plate 26 will be resisted by the side of the through groove 38, causing the iron rings to be stuck on the upper surfaces of the two rotating plates 26, thereby driving the endless chain 19 to move upward. When the endless chain 19 passes through the through groove 38 in the first rod 23, the two rotating plates 26 on the first rod 23 are driven to move upward slightly at one end where they approach each other as the endless chain 19 moves upward, so as to achieve the purpose that when the traction and crushing device 34 is pulled, the two rotating plates 26 on the second rod 4 can be self-locked, and the two rotating plates 26 on the first rod 23 can be opened, enabling the endless chain 19 to be pulled and driven; after the extension column 5 moves upward a certain distance, the crushing device 34 is moved into the predetermined waste pipe 1, and the first telescopic device 7 is stopped. The distance that the first telescopic device 7 moves upward is easy to control, which can make the crushing device 34 accurately move to the predetermined position, so as to achieve the purpose that the traction stroke can be accurately measured and controlled and the endless chain 19 can generate a large pulling force to pull the crushing device 34, solving the problems that common traction mechanisms on the market usually use winches, electric hoists, etc., usually with very small pulling forces, unable to be self-locked and difficult to measure the traction stroke;

[0049] Synchronously, during the process of the endless chain 19 pulling the crushing device 34, the jacking device 54 is started synchronously, and the top plate 55 jacks the new pipe 37 into the waste pipe 1 along with the crushing device 34. The jacking distance and speed can be well coordinated with the crushing device 34, and at the same time, it can also generate a thrust for the crushing device 34 to avoid the problem of the crushing device 34 being stuck;

[0050] Then start the crushing device 34. The extending end of the second telescopic device 50 in the crushing device 34 extends and pushes the hinge plate 47 to move towards the direction close to the conical block 52. The movement of the hinge plate 47 drives the connecting rod 45 to rotate, and the connecting rod 45 pushes the first crushing plate 44 and the second crushing plate 46 outward. The first crushing plate 44 and the second crushing plate 46 rotate, and under the pressure of the first crushing plate 44 and the second crushing plate 46, the waste pipe 1 is crushed outward, so as to achieve the purpose of crushing and expanding the diameter of the waste pipe 1;

[0051] After the crushing is completed, turn off the crushing device 34, and continue to start the traction device 56 to pull the crushing device 34 forward. The process is as follows: First, start the first telescopic device 7 to retract the extension column 5. The downward movement of the extension column 5 drives the second rod 4 to move downward. The downward movement of the second rod 4 drives the first rack 3 to move downward. The interaction between the first rack 3 and the first gear 20 causes the first gear 20 to rotate in the opposite direction as before. The rotation of the first gear 20 drives the rotating sleeve 43 to rotate. The rotation of the rotating sleeve 43 drives the disc 42 to rotate. The rotation of the disc 42 drives the pawl 41 to move. The pawl 41 slides with the internal ratchet 39, and the pawl 41 does not push the internal ratchet 39 to rotate, thus avoiding the problem of the chain release of the winding roller 18 during the traction work. During the downward movement of the second rod 4, the two rotating plates 26 on the second rod 4 move relative to the endless chain 19, causing the ends of the two rotating plates 26 on the second rod 4 that are close to each other to move slightly upward. At this time, the two rotating plates 26 on the first rod 23 are tightly "closed" under the action of the self-weight of the endless chain 19 and the traction force on the crushing device 34, so that the endless chain 19 does not move downward. Thus, when the first telescopic device 7 contracts, the endless chain 19 is self-locked to prevent the endless chain 19 from falling and maintain the tension between the endless chain 19 and the crushing device 34. When the second rod 4 moves downward to an appropriate distance, extend the first telescopic device 7 again, and each component performs the same actions as during the previous traction, so as to further pull the crushing device 34 and repeat the crushing operation. During this process, every time the crushing device 34 advances a certain distance, synchronously use the jacking device 54 to jack the new pipeline 37. After the jacking device 54 reaches the jacking stroke, retract the jacking device 54 and place another new pipeline 37. Use the jacking device 54 to continue jacking, and replace the waste pipeline 1 with the new pipeline 37 to complete the replacement of the waste pipeline 1 at its original position.

[0052] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0053] In addition, the terms "first", "second", "third", "fourth", "fifth", "sixth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features.

[0054] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A pipeline in-situ replacement device, characterized in that: It includes a traction device (56). The traction device (56) is connected to a crushing device (34) through a ring chain (19). The crushing device (34) includes a flange base (51). A plurality of first crushing plates (44) are rotatably connected to the flange base (51). The ends of the first crushing plates (44) away from the flange base (51) are rotatably connected to second crushing plates (46). A conical block (52) is provided on one side of the flange base (51). The ends of the second crushing plates (46) away from the first crushing plates (44) are rotatably connected to the conical block (52). A second telescopic device (50) is fixedly connected to the flange base (51). The second telescopic device (50) is located between the conical block (52) and the flange base (51). The extending end of the second telescopic device (50) is fixedly connected to a hinge disc (47). Connecting rods (45) are rotatably connected to the first crushing plates (44). The connecting rods (45) are rotatably connected to the hinge disc (47). A guide sleeve (49) is fixedly connected to the side of the hinge disc (47) away from the first telescopic device (7). A guide post (48) is slidably connected in the guide sleeve (49). The guide post (48) is fixedly connected to the conical block (52). The traction device (56) includes a support base (10). Two support rods (13) are fixedly connected to the top surface of the support base (10). A first fixed rod (6) and a second fixed rod (8) are fixedly connected to one side of each of the two support rods (13). The first fixed rods (6) are all located above the second fixed rods (8). A first telescopic device (7) is fixedly connected to the top surface of each of the second fixed rods (8). Each first telescopic device (7) includes a main body base and an extending column (5). The top ends of the extending columns (5) pass through the first fixed rods (6). The extending columns (5) are slidably connected to the first fixed rods (6). A first rod (23) is fixedly connected between the two first fixed rods (6). A second rod (4) is provided above the first rod (23). The second rod (4) is fixedly connected to the two extending columns (5). Through grooves (38) are formed in the top surfaces of the first rod (23) and the second rod (4). Two rotating plates (26) are rotatably connected to the top surfaces of the first rod (23) and the second rod (4). The two rotating plates (26) are all located above the through grooves (38). The ring chain (19) passes through the two through grooves (38). The ring chain (19) is located between the two rotating plates (26) above each through groove (38). The ring chain (19) cooperates with the rotating plates (26).

2. The in-situ replacement device for pipelines according to claim 1, wherein One end of each of the rotating plates (26) is fixedly connected to a fourth column (27), and the fourth columns (27) are respectively rotationally connected to the first rod (23) and the second rod (4). Chute grooves (33) are formed in the top surfaces of the first rod (23) and the second rod (4). Second racks (30) are slidably connected in the chute grooves (33). Second gears (22) are fixedly connected to the outsides of the fourth columns (27) close to the chute grooves (33). The second racks (30) are respectively engaged with the second gears (22). A threaded column (32) is provided in the chute groove (33) on the first rod (23). One end of the threaded column (32) close to the endless chain (19) is fixedly connected to a fifth column (29), and the other end of the threaded column (32) is fixedly connected to a second column (14). The fifth column (29) and the second column (14) are respectively slidably connected to the second rack (30). The first column (11) and the second column (14) are respectively rotationally connected to the first rod (23). The threaded column (32) is threadedly connected to the second rack (30). A first spring (28) is sleeved on the outside of the fifth column (29), and a second spring (31) is sleeved on the outside of the second column (14). A guiding groove is formed in the bottom of the chute groove (33) on the second rod (4). The two second racks (30) are fixedly connected by a telescopic rod (15). The telescopic rod (15) passes through the guiding groove. Two mutually engaged fourth gears (25) are respectively rotationally connected to one side of the first rod (23) and the second rod (4). One end of each of the fourth columns (27) is fixedly connected to a third gear (24). The two fourth gears (25) on the first rod (23) and the second rod (4) are respectively engaged with the two third gears (24).

3. The in-situ replacement device for pipelines according to claim 2, characterized in that, A third column (17) is provided above the second rod (4). The third column (17) is rotationally connected to the two support rods (13). A winding roller (18) is fixedly connected to the outside of the third column (17). The winding roller (18) is located between the two support rods (13). One end of the endless chain (19) is fixedly connected to the winding roller (18). A ratchet mechanism (21) is connected to the outside of the third column (17). The ratchet mechanism (21) is drivingly connected to a first gear (20). A first rack (3) is fixedly connected to the top surface of the second rod (4). The first rack (3) is engaged with the first gear (20). One end of the second column (14) passes through the chute groove (33) and the first fixing rod (6) and extends to the outside of the first fixing rod (6). The third column (17) and the second column (14) are drivingly connected by a pulley assembly (16).

4. The in-situ replacement device for pipelines according to claim 3, wherein The ratchet mechanism (21) includes an inner ratchet (39) and a disc (42). The disc (42) is located inside the inner ratchet (39). The inner ratchet (39) is fixedly connected to the third column (17). A rotating sleeve (43) is fixedly connected to one side of the disc (42). The rotating sleeve (43) is sleeved on the outside of the third column (17) and is rotationally connected to the third column (17). The rotating sleeve (43) is fixedly connected to the first gear (20). A pawl (41) is rotationally connected to one side of the disc (42), and a leaf spring (40) is fixedly connected to the disc (42). The leaf spring (40) is fixedly connected to the pawl (41).

5. The in-situ replacement device for a pipeline according to claim 4, characterized in that, The top surface of the support base (10) is fixedly connected with two support frames (9). A first column (11) is rotatably connected between the two support frames (9). A sprocket (12) is fixedly connected to the outside of the first column (11). The endless chain (19) is engaged with the sprocket (12). A driving motor (2) is fixedly connected to the support rod (13). The output shaft of the driving motor (2) is in transmission connection with a third column (17).

6. The in-situ replacement device for pipeline according to claim 5, characterized in that, It includes a jacking device. The jacking device (54) is engaged with the crushing device (34). The flange base (51) is fixedly connected with a sheath (35).

7. A method for in-situ replacement of pipelines, which uses the pipeline in-situ replacement device according to any one of claims 1-6, characterized in that, It includes placing the traction device (56) in the receiving well, placing the jacking device (54) and the crushing device (34) in the launching well. One end of the endless chain (19) passes through the waste pipe (1) from the receiving well and enters the launching well and is fixedly connected with the crushing device (34). A new pipe (37) is placed in the sheath (35). The traction device (56) and the jacking device (54) are started. The traction device (56) pulls the endless chain (19) to drive the crushing device (34) to move into the waste pipe (1). The jacking device (54) pushes the new pipe (37) along with the crushing device (34). Then the crushing device (34) is started. The crushing device (34) expands and crushes the waste pipe (1). Then the crushing device (34) is closed. The traction device (56) is used again to pull the crushing device (34) for a certain distance. Every time the crushing device (34) advances a certain distance, the jacking device (54) is synchronously used to jack the new pipe (37). After the jacking device (54) reaches the jacking stroke, the jacking device (54) is retracted, and a new pipe (37) is placed again. The jacking device (54) is used to continue jacking, replacing the waste pipe (1) with the new pipe (37) to complete the in-situ replacement of the waste pipe (1).

8. A method for in-situ replacement of pipelines according to claim 7, characterized in that The outer diameter of the new pipe (37) is greater than or equal to the outer diameter of the waste pipe (1).

9. A method for in-situ replacement of a pipeline according to claim 8, characterized in that, The diameter of the launching well is 2 - 3m, and the receiving well is an inspection well.

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