Non-excavation pipeline repairing device and method adaptive to different pipe diameters
The trenchless pipe repair device, which uses a multi-layer support structure and gear transmission system, solves the problem that traditional devices cannot adapt to different pipe diameters, achieves the stability and uniform stress of the inner lining pipe, and improves repair efficiency and safety.
Patent Information
- Application Number
- CN202511951421.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-23
- Publication Date
- 2026-02-13
AI Technical Summary
Traditional trenchless pipeline repair devices cannot flexibly adapt to different pipe diameters, leading to frequent component replacements, reduced work efficiency, and difficulty in ensuring the stability and uniform stress of the inner liner when the pipe diameter changes, affecting the repair effect.
A trenchless pipe repair device adapted to different pipe diameters was designed. It adopts a multi-layer support structure and gear transmission system, including an arc-shaped support plate, an electric telescopic rod and a variable frequency motor. The gear meshing realizes flexible adaptation and multi-point support of the inner liner, ensuring uniform stress and stability.
It improves the working efficiency and applicability of the device, enhances the stability of the inner liner tube during the repair process, reduces the risk of displacement and deformation, improves the repair effect and conveying efficiency, and reduces the vibration and noise of the device operation.
Smart Images
Figure CN121520486A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of trenchless pipeline repair devices, specifically a trenchless pipeline repair device adaptable to different pipe diameters. Background Technology
[0002] Trenchless pipeline repair is a technology that repairs damaged pipelines without large-scale excavation. It utilizes advanced machinery and specialized repair materials to reinforce, repair, or replace damaged sections by manipulating the inside of the pipeline, thereby restoring its normal functionality.
[0003] Traditional trenchless pipeline repair devices often use fixed-size support structures and clamps, which cannot flexibly adapt to pipes of different diameters. With the continuous upgrading and expansion of urban infrastructure, the differences in pipe diameters in pipeline systems are increasing. This fixed-size design means that when the device is applied to non-standard pipe diameters, it either cannot effectively fix the inner liner or requires frequent replacement of components of different sizes, which greatly reduces work efficiency. At the same time, many traditional devices use single-point support or simple clamping methods to fix the inner liner. This design makes it difficult to ensure the stability and uniform stress of the inner liner during the repair process when the pipe diameter changes significantly. The inner liner may shift or deform during transportation due to uneven stress, affecting the repair effect. Summary of the Invention
[0004] The purpose of this invention is to provide a trenchless pipeline repair device adaptable to different pipe diameters, in order to solve the problems mentioned in the background art. Traditional trenchless pipeline repair devices mostly use fixed-size support structures and clamps, which cannot flexibly adapt to pipes of different diameters. With the continuous upgrading and expansion of urban infrastructure, the differences in pipe diameters of pipeline systems are increasing. This fixed-size design means that when the device is applied to non-standard pipe diameters, it either cannot effectively fix the inner liner or requires frequent replacement of components of different sizes, which greatly reduces work efficiency. At the same time, many traditional devices use single-point support or simple clamping methods to fix the inner liner. This design makes it difficult to ensure the stability and uniform stress of the inner liner during the repair process when the pipe diameter changes significantly. The inner liner may shift or deform during transportation due to uneven stress, affecting the repair effect.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a trenchless pipe repair device adaptable to different pipe diameters, comprising a body, a nozzle fixedly mounted on one side of the body, an inner liner tube disposed inside the body and the nozzle, and an arc-shaped support plate II disposed on the other side of the body corresponding to the top and bottom of the inner liner tube. Gear grooves are formed on the top and bottom of the other side of the inner wall of the body, a rotating rod rotatably connected inside the gear groove, the bottom of the rotating rod penetrating into the interior of the body, an internal thread groove formed at the center of the bottom of the rotating rod, an external thread rotating rod threadedly connected inside the internal thread groove, the bottom of the external thread rotating rod rotatably connected to the top of the arc-shaped support plate II, a transverse gear fixedly connected to the top position of the rotating rod corresponding to the gear groove, a one-way gear rotating rod meshing with the top of one side of the transverse gear, and the top and bottom of the machine body... A connecting plate is fixedly connected to the center position. A support frame is provided on the opposite side of each of the two connecting plates. An inner plate is fixedly connected to the front and rear sides of the support frame. Rotating shafts are rotatably connected to both sides between the two inner plates. Conveyor belts are driven to the surfaces of the two rotating shafts on the left and right. The opposite sides of the two conveyor belts on the top and bottom of the inner liner tube are in contact with the surfaces of the top and bottom of the inner liner tube, respectively. Support columns are fixedly connected to the opposite sides of the two inner plates on the top and bottom. The side of the support column away from the inner plate extends to the outside of the support frame. A movable groove is opened inside the support column. A movable block is slidably connected inside the movable groove. Movable rods are fixedly connected to the opposite sides of the two movable blocks on the top and bottom. The sides of the two movable rods on the left and right extend to the outside of the two support columns and are fixedly connected to the connecting plate.
[0006] Preferably, four electric telescopic rods are fixedly installed at the top and bottom of the nozzle. An arc-shaped support plate is fixedly connected to the side of the four electric telescopic rods away from the inner wall of the nozzle. The opposite sides of the two arc-shaped support plates are respectively in contact with the surface of the inner liner tube. The inner wall of the arc-shaped support plate is coated with an anti-friction coating.
[0007] Preferably, one side of the one-way gear lever extends to the outside of the machine body and is fixedly connected to a rotary knob. Limiting telescopic rods are fixedly connected to the four corners of the opposite sides of the two upper and lower arc-shaped support plates. The side of the limiting telescopic rod away from the arc-shaped support plate is fixedly connected to the inner wall of the machine body. The inner walls of the opposite sides of the two upper and lower arc-shaped support plates are in contact with the surface of the inner liner tube. The inner walls of the arc-shaped support plates are coated with an anti-friction coating.
[0008] Preferably, cylinders are fixedly mounted on the opposite side of the top and bottom of the machine body. Connecting rods are fixedly connected to the output ends of the two cylinders on opposite sides. The two connecting rods, which are set up vertically, penetrate into the interior of the machine body on opposite sides and are fixedly connected to the opposite sides of the two support frames. A buffer spring is sleeved on the surface of the connecting rod. The top and bottom of the buffer spring are fixedly connected to the connecting plate and the support column, respectively.
[0009] Preferably, an inverted L-shaped bracket is fixedly connected to one side of the support frame, and an arc-shaped support plate three is fixedly connected to the opposite side of the two upper and lower inverted L-shaped brackets. The inner walls of the opposite sides of the two upper and lower arc-shaped support plates three are in contact with the surface of the inner liner tube. The inner walls of the arc-shaped support plates three are coated with an anti-friction coating. A variable frequency motor is fixedly installed on one side of the front surface of the support frame, and the output end of the variable frequency motor on the rear side passes through the support frame and the inner plate in sequence and is fixedly connected to the rotating shaft.
[0010] Preferably, an arc-shaped plate is fixedly connected to the top and bottom of one side of the machine body. Several limiting seats are fixedly connected to the opposite side of the two arc-shaped plates. A supporting inclined plate is movably connected to the side of the limiting seat away from the arc-shaped plate. The side of the supporting inclined plate away from the limiting seat is in contact with the surface of the inner liner tube.
[0011] A method for using a trenchless pipeline repair device adaptable to different pipe diameters includes the following steps:
[0012] Step 1: Fix the nozzle to one side of the machine body, ensuring the nozzle is accurately and stably positioned. Place the inner liner tube inside the machine body and nozzle, ensuring the inner liner tube is centered. Install the second arc-shaped support plate on the top and bottom of the other side of the machine body, ensuring they are in contact with the top and bottom of the inner liner tube. Rotate the rotating rod to the machine body through the gear groove, and thread the external threaded rotating rod into the internal thread groove, so that the bottom of the external threaded rotating rod is rotatably connected to the second arc-shaped support plate. Install the one-way gear rotating rod, making it mesh with the transverse gear, and fix the rotary knob on the outside of the machine body. Install four electric telescopic rods on the top and bottom of the nozzle, and fix the first arc-shaped support plate to the output end of the electric telescopic rod, ensuring that the first arc-shaped support plate is in contact with the inner liner tube and applying an anti-friction coating.
[0013] Step 2: Rotate the rotary knob to drive the horizontal gear to rotate through the one-way gear rod, which in turn drives the rotating rod and the external threaded rod to rotate, so that the arc-shaped support plate 2 moves inward or outward to adapt to the inner liner tubes of different diameters. This ensures that the arc-shaped support plate 2 is firmly fixed in the machine body through the limiting telescopic rod and is in close contact with the surface of the inner liner tube.
[0014] Step 3: Install a support frame between the two connecting plates, and install an inner plate and a rotating shaft inside the support frame. Connect the conveyor belt drive to the two rotating shafts set on the left and right sides, ensuring that the conveyor belt contacts the top and bottom of the inner liner tube.
[0015] Step four: Use the cylinder to adjust the position of the support frame via the connecting rod to ensure that the conveyor belt applies appropriate pressure to the inner liner tube. Install a buffer spring on the connecting rod to provide additional support and cushioning to reduce vibration during device operation. Install an inverted L-shaped bracket and an arc-shaped support plate three on the support frame, ensuring that the arc-shaped support plate three contacts the surface of the inner liner tube and applies an anti-friction coating. Install a variable frequency motor and connect its output end to the rotating shaft to drive the conveyor belt.
[0016] Step 5: Install the arc-shaped plate and limit seat at the top and bottom of the machine body, and install the support inclined plate on the limit seat. Ensure that the support inclined plate can tilt with the movement of the inner liner tube to provide additional support. Conduct a comprehensive inspection to ensure that all components are installed correctly and without looseness or abnormalities. Connect the power supply, start the electric telescopic rod, cylinder and frequency converter motor, and observe the operation of the device to ensure that the inner liner tube moves smoothly under the combined action of the conveyor belt and the support system, and complete the trenchless pipeline repair operation.
[0017] Compared with the prior art, the beneficial effects of the present invention are:
[0018] This trenchless pipe repair device, adaptable to different pipe diameters, utilizes a rotating knob to drive an externally threaded rotating rod within an internally threaded groove through the meshing of a one-way gear and a transverse gear. This, in turn, moves an arc-shaped support plate two along the inner wall of the machine body, achieving flexible adaptation to liner pipes of different diameters. This design avoids the limitations of traditional devices that cannot adapt to multiple pipe diameters due to fixed dimensions, significantly improving work efficiency and applicability. The device employs a multi-layered support structure, including arc-shaped support plate one, arc-shaped support plate two, and arc-shaped support plate three. These plates are in close contact with the liner pipe via an electric telescopic rod, an externally threaded rotating rod, and an inverted L-shaped bracket, forming multi-point support. This design not only enhances the stability of the liner pipe during the repair process but also ensures uniform stress distribution, effectively preventing damage to the liner pipe due to... Uneven stress leading to displacement or deformation improves repair effectiveness. The coordinated action of the electric telescopic rod and cylinder enables precise control of the support structure and conveying system. The electric telescopic rod responds quickly, ensuring a tight fit between the arc-shaped support plate and the inner liner. The cylinder, through a combination of connecting rod and buffer spring, provides stable support and adjustment space for the conveyor belt, reducing vibration and noise during operation and improving automation. Driven by a variable frequency motor, the conveyor belt smoothly transports the inner liner into the pipeline. Simultaneously, the support inclined plate tilts with the movement of the inner liner, providing additional support force and ensuring the stability and safety of the inner liner during transport. This design not only improves conveying efficiency but also reduces the risk of damage to the inner liner due to improper transport. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of the present invention;
[0020] Figure 2 For the present invention Figure 1 A magnified view of part A in the diagram;
[0021] Figure 3 For the present invention Figure 1 A magnified view of part B in the diagram;
[0022] Figure 4 For the present invention Figure 1 A magnified view of part of C;
[0023] Figure 5 This is a three-dimensional structural view of the support frame of the present invention;
[0024] Figure 6 This is a three-dimensional view of the inverted L-shaped bracket of the present invention.
[0025] In the diagram: 1. Machine body; 2. Nozzle; 3. Inner liner tube; 4. Arc-shaped support plate one; 5. Electric telescopic rod; 6. Arc-shaped support plate two; 7. Gear groove; 8. Rotating rod; 9. Internal thread groove; 10. External thread rotating rod; 11. Limiting telescopic rod; 12. Horizontal gear; 13. One-way gear rotating rod; 14. Rotary knob; 15. Support frame; 16. Rotating shaft; 17. Conveyor belt; 18. Internal plate; 19. Support column; 20. Connecting plate; 21. Movable groove; 22. Movable block; 23. Movable rod; 24. Buffer spring; 25. Inverted L-shaped bracket; 26. Arc-shaped support plate three; 27. Cylinder; 28. Connecting rod; 29. Arc-shaped plate; 30. Limiting seat; 31. Support inclined plate; 32. Variable frequency motor. Detailed Implementation
[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0027] Please see Figure 1-6This invention provides a technical solution: a trenchless pipe repair device adaptable to different pipe diameters, comprising a body 1, a nozzle 2 fixedly mounted on one side of the body 1, an inner liner 3 disposed inside the body 1 and the nozzle 2, and an arc-shaped support plate 6 disposed on the other side of the body 1 corresponding to the top and bottom of the inner liner 3, gear grooves 7 being formed on the top and bottom of the other side of the inner wall of the body 1, a rotating rod 8 being rotatably connected inside the gear grooves 7, the bottom of the rotating rod 8 penetrating into the interior of the body 1, an internal thread groove 9 being formed at the center of the bottom of the rotating rod 8, an external thread rotating rod 10 being threadedly connected inside the internal thread groove 9, the bottom of the external thread rotating rod 10 being rotatably connected to the top of the arc-shaped support plate 6, a transverse gear 12 being fixedly connected near the top of the rotating rod 8 corresponding to the inside of the gear groove 7, a one-way gear rotating rod 13 meshing with the top of one side of the transverse gear 12, and connecting plates 20 being fixedly connected near the center of the top and bottom of the body 1. Each plate 20 has a support frame 15 on its opposite side. The front and rear sides of the support frame 15 are fixedly connected to the built-in plate 18. Rotating shafts 16 are rotatably connected to both sides between the two built-in plates 18. The surfaces of the two rotating shafts 16 are connected to the conveyor belts 17. The opposite sides of the two conveyor belts 17 are in contact with the top and bottom surfaces of the inner liner tube 3, respectively. Support columns 19 are fixedly connected to the opposite sides of the two built-in plates 18. The side of the support column 19 away from the built-in plate 18 extends to the outside of the support frame 15. The inside of the support column 19 has a movable groove 21. The movable block 22 is slidably connected inside the movable groove 21. The opposite sides of the two movable blocks 22 are fixedly connected to the movable rods 23. The sides of the two movable rods 23 away from the two movable blocks 22 extend to the outside of the two support columns 19 and are fixedly connected to the connecting plate 20.
[0028] Four electric telescopic rods 5 are fixedly installed at the top and bottom of the nozzle 2. An arc-shaped support plate 4 is fixedly connected to the side of the four electric telescopic rods 5 away from the inner wall of the nozzle 2. The opposite sides of the two arc-shaped support plates 4 are in contact with the surface of the inner liner tube 3. The inner wall of the arc-shaped support plate 4 is coated with an anti-friction coating.
[0029] One side of the one-way gear lever 13 extends to the outside of the body 1 and is fixedly connected to a rotary knob 14. The four corners of the opposite sides of the two upper and lower arc-shaped support plates 2 6 are fixedly connected to limit telescopic rods 11. The side of the limit telescopic rod 11 away from the arc-shaped support plate 2 6 is fixedly connected to the inner wall of the body 1. The inner walls of the opposite sides of the two upper and lower arc-shaped support plates 2 6 are in contact with the surface of the inner liner tube 3. The inner walls of the arc-shaped support plates 2 6 are coated with an anti-friction coating.
[0030] Cylinders 27 are fixedly mounted on the top and bottom sides of the body 1. Connecting rods 28 are fixedly connected to the output ends of the two cylinders 27 on opposite sides. The two connecting rods 28, which are set up vertically, penetrate into the interior of the body 1 on opposite sides and are fixedly connected to the opposite sides of the two support frames 15. Buffer springs 24 are sleeved on the surface of the connecting rods 28. The top and bottom of the buffer springs 24 are fixedly connected to the connecting plate 20 and the support column 19, respectively.
[0031] An inverted L-shaped bracket 25 is fixedly connected to one side of the support frame 15. An arc-shaped support plate 36 is fixedly connected to the opposite side of the two inverted L-shaped brackets 25. The inner walls of the opposite sides of the two arc-shaped support plates 36 are in contact with the surface of the inner liner tube 3. The inner walls of the arc-shaped support plates 36 are coated with an anti-friction coating. A variable frequency motor 32 is fixedly installed on one side of the front surface of the support frame 15. The output end of the variable frequency motor 32 passes through the support frame 15 and the inner plate 18 in sequence and is fixedly connected to the rotating shaft 16.
[0032] Arc-shaped plates 29 are fixedly connected to the top and bottom of one side of the body 1. Several limiting seats 30 are fixedly connected to the opposite side of the two arc-shaped plates 29. A supporting inclined plate 31 is movably connected to the side of the limiting seat 30 away from the arc-shaped plate 29. The side of the supporting inclined plate 31 away from the limiting seat 30 is in contact with the surface of the inner liner tube 3.
[0033] A method for using a trenchless pipeline repair device adaptable to different pipe diameters includes the following steps:
[0034] Step 1: Fix the nozzle 2 to one side of the machine body 1, ensuring the nozzle 2 is accurately and stably positioned. Place the inner liner tube 3 inside the machine body 1 and the nozzle 2, ensuring the inner liner tube 3 is centered in the device. Install the arc-shaped support plate 2 6 on the top and bottom of the other side inside the machine body 1, ensuring they are in contact with the top and bottom of the inner liner tube 3. Rotate the rotating rod 8 to the machine body 1 via the gear groove 7, and thread the external threaded rotating rod 10 into the internal threaded groove 9, so that the bottom of the external threaded rotating rod 10 is rotatably connected to the arc-shaped support plate 2 6. Install the one-way gear rotating rod 13, making it mesh with the transverse gear 12. Fix the rotary knob 14 on the outside of the machine body 1. Install four electric telescopic rods 5 on the top and bottom inside the nozzle 2, and fix the arc-shaped support plate 1 4 to the output end of the electric telescopic rod 5, ensuring that the arc-shaped support plate 1 4 is in contact with the inner liner tube 3 and applying an anti-friction coating.
[0035] Step 2: Rotate the rotary knob 14, which drives the transverse gear 12 to rotate through the one-way gear rod 13, thereby driving the rotating rod 8 and the external threaded rod 10 to rotate, so that the arc-shaped support plate 2 6 moves inward or outward to adapt to the inner liner tube 3 of different diameters, ensuring that the arc-shaped support plate 2 6 is firmly inside the machine body 1 through the limiting telescopic rod 11 and is in close contact with the surface of the inner liner tube 3.
[0036] Step 3: Install the support frame 15 between the two connecting plates 20, and install the built-in plate 18 and the rotating shaft 16 inside the support frame 15. Connect the conveyor belt 17 to the two rotating shafts 16 on the left and right sides to ensure that the conveyor belt 17 is in contact with the top and bottom of the inner liner tube 3.
[0037] Step four: Use cylinder 27 to adjust the position of support frame 15 via connecting rod 28 to ensure that conveyor belt 17 applies appropriate pressure to inner liner tube 3. Install buffer spring 24 on connecting rod 28 to provide additional support and buffering to reduce vibration during device operation. Install inverted L-shaped bracket 25 and arc-shaped support plate 3 26 on support frame 15, ensuring that arc-shaped support plate 3 26 contacts the surface of inner liner tube 3 and is coated with anti-friction coating. Install variable frequency motor 32 and connect its output end to rotating shaft 16 to drive conveyor belt 17.
[0038] Step 5: Install the arc plate 29 and the limiting seat 30 at the top and bottom of the machine body 1, and install the supporting inclined plate 31 on the limiting seat 30 to ensure that the supporting inclined plate 31 can tilt with the movement of the inner liner tube 3 to provide additional support. Conduct a comprehensive inspection to ensure that all components are installed correctly and without looseness or abnormality. Connect the power supply and start the electric telescopic rod 5, cylinder 27 and frequency conversion motor 32. Observe the operation of the device to ensure that the inner liner tube 3 moves smoothly under the combined action of the conveyor belt 17 and the support system to complete the trenchless pipeline repair operation.
[0039] In summary, this trenchless pipe repair device, adaptable to different pipe diameters, utilizes the meshing transmission between the one-way gear rod 13 and the transverse gear 12 by rotating the rotary knob 14. This drives the external threaded rod 10 to rotate within the internal threaded groove 9, thereby moving the arc-shaped support plate 2 6 along the inner wall of the machine body 1. This achieves flexible adaptation to inner lining pipes 3 of different diameters. This design avoids the limitations of traditional devices that cannot adapt to multiple pipe diameters due to fixed dimensions, significantly improving work efficiency and applicability. The device employs a multi-layer support structure, including an arc-shaped support plate 1 4, an arc-shaped support plate 2 6, and an arc-shaped support plate 3 26. These plates are in close contact with the inner lining pipe 3 via an electric telescopic rod 5, an external threaded rod 10, and an inverted L-shaped bracket 25, forming multi-point support. This design not only enhances the stability of the inner lining pipe 3 during the repair process but also ensures uniform stress distribution, effectively preventing damage to the inner lining. The uneven force on the pipe 3 causes displacement or deformation, which improves the repair effect. Through the synergistic action of the electric telescopic rod 5 and the cylinder 27, precise control of the support structure and conveying system is achieved. The electric telescopic rod 5 responds quickly to ensure a tight fit between the arc-shaped support plate 4 and the inner liner pipe 3. The cylinder 27, through the combination of the connecting rod 28 and the buffer spring 24, provides stable support and adjustment space for the conveyor belt 17, reducing vibration and noise during device operation and improving the level of automation. The conveyor belt 17 is driven by the variable frequency motor 32, which can smoothly transport the inner liner pipe 3 into the pipeline. At the same time, the support inclined plate 31 tilts with the movement of the inner liner pipe 3, providing additional support force and ensuring the stability and safety of the inner liner pipe 3 during the conveying process. This design not only improves the conveying efficiency but also reduces the risk of damage to the inner liner pipe 3 due to improper conveying.
[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A trenchless pipe repair device adaptable to different pipe diameters, comprising a body (1), characterized in that: A nozzle (2) is fixedly mounted on one side of the body (1). An inner liner tube (3) is provided inside the body (1) and the nozzle (2). An arc-shaped support plate (6) is provided on the other side of the body (1) at the top and bottom of the inner liner tube (3). Gear grooves (7) are provided on the top and bottom of the other side of the inner wall of the body (1). A rotating rod (8) is rotatably connected inside the gear groove (7). The bottom of the rotating rod (8) extends into the interior of the body (1). An inner liner tube is provided at the center of the bottom of the rotating rod (8). The internal thread groove (9) is connected to an external threaded rotating rod (10). The bottom of the external threaded rotating rod (10) is rotatably connected to the top of the arc-shaped support plate (6). A transverse gear (12) is fixedly connected to the gear groove (7) at the top position of the rotating rod (8). A one-way gear rotating rod (13) meshes with the top of one side of the transverse gear (12). Connecting plates (20) are fixedly connected to the top and bottom of the body (1) near the center. The two connecting plates (20) are opposite to each other. Each side is provided with a support frame (15), and the front and rear sides of the support frame (15) are fixedly connected with an inner plate (18). The two inner plates (18) are rotatably connected to both sides. The surfaces of the two rotating shafts (16) are connected to the surfaces of the two rotating shafts (16) on the left and right. The opposite sides of the two upper and lower conveyor belts (17) are in contact with the surfaces of the top and bottom of the inner liner tube (3), respectively. The two inner plates (18) are fixedly connected to the two sides at opposite ends. (19) The side of the support column (19) away from the built-in plate (18) extends to the outside of the support frame (15). The inside of the support column (19) is provided with a movable groove (21). The movable groove (21) is slidably connected with a movable block (22). The two movable blocks (22) set up vertically are fixedly connected to movable rods (23) on opposite sides. The two movable rods (23) set up horizontally and vertically extend to the outside of the two support columns (19) on opposite sides and are fixedly connected to the connecting plate (20).
2. The trenchless pipeline repair device adaptable to different pipe diameters according to claim 1, characterized in that: Four electric telescopic rods (5) are fixedly installed at the top and bottom of the nozzle (2). An arc-shaped support plate (4) is fixedly connected to the side of the four electric telescopic rods (5) away from the inner wall of the nozzle (2). The opposite sides of the two arc-shaped support plates (4) are respectively in contact with the surface of the inner liner tube (3). The inner wall of the arc-shaped support plate (4) is coated with an anti-friction coating.
3. The trenchless pipeline repair device adaptable to different pipe diameters according to claim 2, characterized in that: One side of the one-way gear rod (13) extends through to the outside of the body (1) and is fixedly connected to a rotary knob (14). The four corners of the opposite sides of the two arc-shaped support plates (6) are fixedly connected to limit telescopic rods (11). The side of the limit telescopic rod (11) away from the arc-shaped support plate (6) is fixedly connected to the inner wall of the body (1). The inner walls of the opposite sides of the two arc-shaped support plates (6) are in contact with the surface of the inner liner tube (3). The inner walls of the arc-shaped support plates (6) are coated with an anti-friction coating.
4. The trenchless pipeline repair device adaptable to different pipe diameters according to claim 1, characterized in that: Cylinders (27) are fixedly mounted on the top and bottom sides of the body (1). The output ends of the two cylinders (27) on opposite sides are fixedly connected to connecting rods (28). The two connecting rods (28) are set up vertically and vertically, and their opposite sides penetrate into the interior of the body (1) and are fixedly connected to the opposite sides of the two support frames (15). A buffer spring (24) is sleeved on the surface of the connecting rod (28). The top and bottom of the buffer spring (24) are fixedly connected to the connecting plate (20) and the support column (19) respectively.
5. The trenchless pipeline repair device adaptable to different pipe diameters according to claim 1, characterized in that: One side of the support frame (15) is fixedly connected to an inverted L-shaped bracket (25). The two inverted L-shaped brackets (25) set up above and below are fixedly connected to the opposite side of an arc-shaped support plate three (26). The inner walls of the opposite side of the two arc-shaped support plates three (26) set up above and below are in contact with the surface of the inner liner tube (3). The inner wall of the arc-shaped support plate three (26) is coated with an anti-friction coating. A variable frequency motor (32) is fixedly installed on one side of the front surface of the support frame (15). The output end of the variable frequency motor (32) on the rear side passes through the support frame (15) and the inner plate (18) in sequence and is fixedly connected to the rotating shaft (16).
6. The trenchless pipeline repair device adaptable to different pipe diameters according to claim 1, characterized in that: Arc plates (29) are fixedly connected to the top and bottom of one side of the body (1). Several limiting seats (30) are fixedly connected to the opposite side of the two arc plates (29) set up above and below. A supporting inclined plate (31) is movably connected to the side of the limiting seat (30) away from the arc plate (29). The side of the supporting inclined plate (31) away from the limiting seat (30) is in contact with the surface of the inner liner tube (3).
7. The method of using a trenchless pipeline repair device adaptable to different pipe diameters according to any one of claims 1-6, characterized in that, Includes the following steps: Step 1: Fix the nozzle (2) to one side of the machine body (1), ensuring that the nozzle (2) is in an accurate and stable position. Place the inner liner (3) inside the machine body (1) and the nozzle (2), ensuring that the inner liner (3) is in the center of the device. Install the arc-shaped support plate 2 (6) on the top and bottom of the other side inside the machine body (1), ensuring that they are in contact with the top and bottom of the inner liner (3). Rotate the rotating rod (8) to the machine body (1) through the gear groove (7), and screw the external threaded rotating rod (10) into the machine body (1). The threaded connection is in the internal thread groove (9), so that the bottom of the external threaded rod (10) is rotatably connected to the arc support plate two (6), a one-way gear rod (13) is installed so that it meshes with the transverse gear (12), and a rotary knob (14) is fixed on the outside of the machine body (1). Four electric telescopic rods (5) are installed at the top and bottom inside the nozzle (2), and the arc support plate one (4) is fixed at the output end of the electric telescopic rod (5) to ensure that the arc support plate one (4) contacts the inner liner tube (3) and is coated with an anti-friction coating. Step 2: Rotate the rotary knob (14), which drives the transverse gear (12) to rotate through the one-way gear rod (13), thereby driving the rotating rod (8) and the external threaded rod (10) to rotate, so that the arc support plate 2 (6) moves inward or outward to adapt to the inner liner tube (3) of different diameters, ensuring that the arc support plate 2 (6) is firmly in the machine body (1) through the limiting telescopic rod (11) and in close contact with the surface of the inner liner tube (3); Step 3: Install a support frame (15) between the two connecting plates (20), and install an inner plate (18) and a rotating shaft (16) inside the support frame (15). Connect the conveyor belt (17) to the two rotating shafts (16) set on the left and right sides to ensure that the conveyor belt (17) contacts the top and bottom of the inner liner tube (3). Step 4: Use cylinder (27) to adjust the position of support frame (15) via connecting rod (28) to ensure that conveyor belt (17) applies appropriate pressure to inner liner tube (3). Install buffer spring (24) on connecting rod (28) to provide additional support and buffering effect, and reduce vibration during device operation. Install inverted L-shaped bracket (25) and arc support plate three (26) on support frame (15) to ensure that arc support plate three (26) contacts the surface of inner liner tube (3) and applies anti-friction coating. Install variable frequency motor (32) and connect its output end to rotating shaft (16) to drive conveyor belt (17) to run. Step 5: Install the arc plate (29) and the limit seat (30) at the top and bottom of the machine body (1), and install the support inclined plate (31) on the limit seat (30) to ensure that the support inclined plate (31) can tilt with the movement of the inner liner (3) to provide additional support. Conduct a comprehensive inspection to ensure that all components are installed correctly and without looseness or abnormality. Connect the power supply and start the electric telescopic rod (5), cylinder (27) and frequency converter (32). Observe the operation of the device to ensure that the inner liner (3) moves smoothly under the combined action of the conveyor belt (17) and the support system to complete the trenchless pipeline repair operation.