A non-excavation repair device for underground pipeline

Abstract

The utility model relates to the field of pipeline repair, specifically relates to a kind of underground pipeline non-excavation compound top-pull pipe repair device, it includes: the top pipe mechanism installed in one of well and the pulley block mechanism installed in another well, winch is provided on the ground of one side above pulley block mechanism, and the top pipe mechanism includes cross-shaped chassis and the side baffle connected at its one end, and the guide tube assembly with fixed function is slidably installed on cross-shaped chassis, it further includes telescopic rod assembly respectively installed in the top of cross-shaped chassis two sides, and telescopic rod assembly is suitable for driving guide tube assembly to and fro shift. By connecting rod drive U-shaped limit plate moves up and down, make it separate from annular limit slot, and because mounting seat two fixed installation, hydraulic cylinder adjusts telescopic length, make its another annular limit slot move to the corresponding position of limit port, to change the corresponding position of guide tube assembly on hydraulic cylinder, to change its telescopic length, to control pipeline jacking length, to improve the repair efficiency of pipeline.

Description

Technical Field

[0001] This utility model relates to the field of pipeline repair, and in particular to a trenchless double-jacking pipe repair device for underground pipelines. Background Technology

[0002] In urban centers, major traffic arteries, or densely built-up areas, traditional excavation repair methods can severely impact traffic and the surrounding environment. In contrast, trenchless double-jacking pipe repair devices can avoid large-scale excavation and reduce the impact on traffic and the surrounding environment. Trenchless double-jacking pipe repair devices mainly use a hydraulic system to provide power to push new pipes or repair materials from the working shaft into the existing pipe. At the same time, it removes soil or obstacles from the existing pipe and works in conjunction with a winch or pipe pulling machine to further pull the new pipe or repair materials into the existing pipe, ensuring a tight fit between the repair materials and the existing pipe. This repair method is suitable for various geological conditions and pipe materials and can also cope with complex construction environments, hence its widespread adoption.

[0003] When the jacking pipe repair device is used to insert a new pipe or other repair pipe, it needs to continuously adjust the limit plate on the hydraulic cylinder to regulate its extension length. During the jacking pipe repair construction, the jacking distance of the pipe needs to be strictly controlled to ensure that the new pipe or repair pipe can accurately reach the predetermined position. If the jacking distance is too long or too short, it will affect the installation accuracy of the pipe and even lead to construction failure. The main function of the limit plate is to limit the stroke of the hydraulic cylinder piston rod, thereby accurately controlling the jacking distance.

[0004] Regarding the aforementioned technologies, the inventors discovered that, due to the limited construction area inside the well, manually adjusting the limit plate on the hydraulic cylinder not only increases construction time and cost but also affects pipeline repair efficiency. Furthermore, during the pipe jacking process, in coordination with the winch, the traction rope on the winch is prone to deviation during pipeline jacking, especially in long-distance pipe jacking projects, requiring continuous calibration and adjustment by the staff. Utility Model Content

[0005] The main technical problem solved by this utility model is to provide a trenchless double-jacking pipe repair device for underground pipelines, which facilitates the adjustment of the corresponding position of the guide pipe assembly on the hydraulic cylinder, thereby changing its extension length, improving the pipeline repair efficiency, and reducing construction time and construction costs.

[0006] To solve the above-mentioned technical problems, the present invention provides a trenchless double-jacking pipe repair device for underground pipelines, comprising: a pipe jacking mechanism installed in one of the wells and a pulley block mechanism installed in the other well. A winch is provided on the ground on one side above the pulley block mechanism. The pipe jacking mechanism includes a grid-shaped base frame and a side baffle connected to one end thereto. A guide pipe assembly with a fixing function is slidably installed on the grid-shaped base frame. The device also includes telescopic rod assemblies installed on both sides of the top of the grid-shaped base frame. The telescopic rod assemblies are adapted to drive the guide pipe assembly to move back and forth. The telescopic rod assemblies are slidably inserted through both ends of the guide pipe assembly.

[0007] It also includes a lifting limiting component that changes the travel length of the catheter assembly. The catheter assembly has limiting ports on both sides of its top. The lifting limiting component includes U-shaped limiting plates embedded in the limiting ports. The U-shaped limiting plates are respectively engaged and limited on the surface of the corresponding telescopic rod assembly. The outer side of the catheter assembly is provided with a U-shaped frame. The inner side of the U-shaped frame is symmetrically provided with connecting rods. The bottom end of the connecting rod is connected to the corresponding U-shaped limiting plate. An electric push rod is installed on the top of the catheter assembly. The extended end of the electric push rod is connected to the U-shaped frame.

[0008] By adopting the above technical solution, the grid-shaped base frame ensures the linear motion accuracy of the guide pipe assembly through the distribution of horizontal and vertical reinforcing ribs. The side baffles serve as the reaction support structure for the jacking system, preventing the mechanism from slipping off the base frame due to overload. The guide pipe assembly guides the jacking direction of the pipeline, while the telescopic rod assembly can precisely control the reciprocating movement of the guide pipe assembly through its telescopic movement, thereby realizing the jacking and retraction operations of the pipeline. The lifting limit assembly changes the travel length of the guide pipe assembly, and the limit port provides a position for the installation of the U-shaped limit plate. Through the limit port, the U-shaped limit plate can be accurately embedded and locked onto the guide pipe assembly, thereby limiting the travel of the guide pipe assembly. The locking and limiting effect of the U-shaped limit plate and the telescopic rod assembly means that when the position of the U-shaped limit plate on the telescopic rod assembly changes, the travel range of the guide pipe assembly will also change accordingly, which can precisely control the travel of the guide pipe assembly, ensuring the accuracy and safety of the pipe jacking construction. Furthermore, the U-shaped frame and the connecting rod constitute the transmission structure of the lifting limit assembly. By connecting the U-shaped frame and the connecting rod, the power of the electric push rod can be transmitted to the U-shaped limiting plate, thereby realizing the lifting and lowering movement of the U-shaped limiting plate. When the electric push rod extends and retracts, it drives the U-shaped frame to lift and lower, thereby causing the U-shaped limiting plate to disengage from or embed into the limiting port, so as to adjust the travel of the conduit assembly.

[0009] In a preferred embodiment, the present invention can be further configured such that: guide rails are respectively installed on the top two sides of the grid-shaped base, and sliders are slidably connected to the guide rails, and the sliders are respectively connected to the conduit assembly.

[0010] By adopting the above technical solution, guide rail one provides a clear path and direction for the movement of the guide tube assembly. During the pipe jacking construction process, guide rail one and slider one accurately transmit the power generated by the drive devices such as the telescopic rod assembly to the guide tube assembly, enabling the guide tube assembly to move according to the predetermined stroke and speed. Through the connection of slider one, the stability and reliability of power transmission are achieved, ensuring the smooth progress of pipe jacking construction.

[0011] In a preferred embodiment, the present invention can be further configured as follows: the telescopic rod assembly includes a hydraulic cylinder and annular limiting grooves respectively opened at both ends of the cylinder barrel; the U-shaped limiting plate is engaged in the annular limiting groove; one end of the hydraulic cylinder is connected to a mounting seat one, and the other end is connected to a mounting seat two; the mounting seat one is fixedly connected to a side baffle; the bottom of the mounting seat two is respectively connected to a slider three; and the slider three is slidably mounted on a guide rail one.

[0012] By adopting the above technical solution, when the U-shaped limiting plate disengages from the surface of the annular limiting groove and simultaneously disengages from the limiting port, the hydraulic cylinder extends and retracts to adjust the other annular limiting groove to the corresponding position, and the inner side of the U-shaped limiting plate engages with the surface of the annular limiting groove, thereby adjusting the jacking length of the guide pipe assembly.

[0013] In a preferred embodiment, the present invention can be further configured such that: the conduit assembly includes a base and an air shaft connected to one side thereof, a servo motor is connected to the other side of the base, the output shaft of the servo motor is connected to the air shaft, and a clearance hole corresponding to the servo motor is provided on the side baffle.

[0014] By adopting the above technical solution, the base, as the core support structure of the conduit assembly, provides a stable installation platform for other components such as the air shaft and servo motor. The air shaft changes its diameter by inflating and deflating, thereby clamping and releasing the pipe. During pipe jacking construction, when it is necessary to fix the pipe, air is inflated into the air shaft to increase its diameter, tightly fitting against the inner wall of the pipe and firmly clamping it. When it is necessary to replace the pipe or perform other operations, air is deflated to reduce the diameter of the air shaft, releasing the clamp on the pipe. After the air shaft is connected to the servo motor, the power and torque generated by the servo motor are accurately transmitted to the pipe, driving the pipe to move or assemble with the pipe, and allowing for real-time adjustment of the pipe jacking speed and direction. This meets the pipe jacking construction needs under different geological conditions and construction requirements, improving the quality and efficiency of construction.

[0015] In a preferred embodiment, the present invention can be further configured such that: a second guide rail is installed on the inner side of the U-shaped frame, and a second slider is slidably connected to the second guide rail; the second slider is connected to the U-shaped frame; and when the electric push rod extends, the U-shaped limiting plate separates from the annular limiting groove.

[0016] By adopting the above technical solution, the guide rail 2 provides a precise movement track for the slider 2, ensuring that the slider 2 can only move along the set direction of the guide rail 2. During the movement of the related components of the U-shaped frame, this guiding effect can prevent the slider 2 from deviating or shaking.

[0017] In a preferred embodiment, the present invention can be further configured as follows: the pulley assembly includes an upper pulley assembly and a lower pulley assembly. The upper pulley assembly includes a rectangular frame and a partition connected to its inner side. Each side of the partition is provided with at least two rods connected to the side wall of the rectangular frame. The assembly also includes two symmetrically mounted arc-shaped baffles that are slidably fitted onto the rods. A spring fitted onto the rod is provided between the arc-shaped baffles and the partition. A pulley is installed on one side of the partition, and the pulley is located between two of the rods.

[0018] By adopting the above technical solution, the upper pulley assembly and the lower pulley assembly work together to reasonably share the load borne during pipe jacking construction. By distributing the load to the two assemblies, the pressure borne by a single assembly is reduced, avoiding structural damage or performance degradation caused by excessive local stress, extending the service life of the pulley mechanism, and improving the reliability and stability of the entire pipe jacking equipment. The rectangular frame, as the outer frame of the upper pulley assembly, provides stable structural support for the entire assembly, enabling it to withstand various forces and pressures generated during pipe jacking construction. The rod provides a track for the sliding sleeve of the arc-shaped baffle, allowing the arc-shaped baffle to slide stably along the rod. The symmetrically arranged and sliding sleeve of the arc-shaped baffle on the rod can limit and guide the wire rope used in conjunction with the pulleys. During pipe jacking construction, it ensures that the wire rope or pipeline runs in the correct position, preventing it from deviating from the track and avoiding equipment failure or construction accidents caused by deviation, thus improving the safety and reliability of construction. The spring drives the arc-shaped baffle to move in the opposite direction to fit the wellhead position.

[0019] In a preferred embodiment, this utility model can be further configured as follows: the pulley assembly includes an adjusting rod one and adjusting rod two connected to its two sides respectively. L-shaped mounting arms are connected to opposite sides of the adjusting rod two, and pulley two is installed between the bottom ends of the L-shaped mounting arms. The adjusting rod one includes a rectangular tube with an opening on one side. A rectangular rod slides through the open end of the rectangular tube, and an adjusting screw is threaded through the other end. One end of the adjusting screw is rotatably connected to the rectangular rod via a nut seat, and a handle is installed at the other end. The rectangular rod is positioned away from the adjusting screw. The rectangular tube is connected to a contact plate at one end. A wing bolt is threaded through the end of the rectangular tube near the contact plate and abuts against the surface of the rectangular rod. At least two connecting ribs are connected to both sides of the rectangular tube. One end of each connecting rib is connected to an adjusting rod. The adjusting rod includes a crossbar with an opening on one side and a sliding rod that slides through its opening end. A pad is connected to the end of the sliding rod away from the crossbar. Several through holes are spaced apart on the sliding rod. A wing bolt is threaded through the crossbar, and one end of the wing bolt passes through the corresponding through hole.

[0020] By adopting the above technical solution, rotating the handle drives the adjusting screw to rotate. Under the action of the thread, the adjusting screw pushes the nut seat and the rectangular rod to slide inside the rectangular tube, thereby achieving precise adjustment of the length of the first adjusting rod. During pipe jacking construction, the lateral or longitudinal dimensions of the sliding wheel assembly can be easily adjusted according to different pipe specifications, construction site conditions, and equipment layout requirements, enabling the sliding wheel assembly to better adapt to various construction scenarios and improve the versatility and flexibility of the equipment. The connecting rib tightly connects the rectangular tube and the second adjusting rod together, forming a more stable overall structure. During pipe jacking construction, the sliding wheel assembly will be subjected to various complex external forces. The connecting rib can effectively disperse and transmit these forces, enhancing the structural strength and stability of the entire sliding wheel assembly. The sliding rod slides within the crossbar, allowing the second adjusting rod to be finely adjusted within a certain range. During pipe jacking construction, based on actual construction conditions such as minor pipe offsets and equipment installation errors, the position of the sliding pulley assembly can be precisely adjusted by adjusting the position of the moving rod within the crossbar. This ensures that relevant components can accurately pass through pulley two, improving the accuracy and quality of pipe jacking construction. Once the moving rod is adjusted to the appropriate position within the crossbar, the wing bolt two is screwed into the crossbar, with one end passing through the corresponding through hole on the moving rod. This securely locks the moving rod onto the crossbar, preventing it from sliding due to force during pipe jacking construction and ensuring the stability and reliability of the position of the adjusting rod two.

[0021] In summary, this utility model includes at least one of the following beneficial technical effects of a trenchless double-jacking pipe repair device for underground pipelines:

[0022] The electric push rod drives the U-shaped limit plate to move up and down through the connecting rod, causing it to disengage from the annular limit groove. Since the mounting base is fixedly installed, the hydraulic cylinder adjusts the extension length, causing the other annular limit groove to move to the corresponding position of the limit port, thereby changing the corresponding position of the conduit assembly on the hydraulic cylinder, thus changing its extension length, controlling the pipe jacking length, and improving the pipe repair efficiency.

[0023] The upper and lower pulley assemblies work together to reasonably distribute the load borne during pipe jacking construction. By distributing the load to the two assemblies, the pressure on a single assembly is reduced. Furthermore, the position of the lower pulley assembly can be precisely adjusted by adjusting the position of the moving rod within the crossbar, ensuring that relevant components can accurately pass through pulley two, preventing slippage due to force during pipe jacking construction, and guaranteeing the stability and reliability of the position of adjusting rod two, thereby preventing the traction rope from deviating. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the pipe jacking mechanism of this utility model;

[0027] Figure 3 for Figure 2 The right view;

[0028] Figure 4 for Figure 2 A partial exploded view;

[0029] Figure 5 This is a schematic diagram of the upper pulley assembly of this utility model;

[0030] Figure 6 This is a schematic diagram of the structure of the pulley assembly of this utility model;

[0031] Figure 7 for Figure 6 Sectional view of AA.

[0032] In the diagram: 10. Pipe jacking mechanism; 20. Pulley block mechanism; 3. Winch;

[0033] 11. Grid-shaped base frame; 12. Side baffle; 13. Guide tube assembly; 14. Telescopic rod assembly; 15. Lifting limit assembly; 16. Limiting port; 17. Guide rail one; 18. Slider one; 19. Slider three; 1a. Clearance hole;

[0034] 21. Upper pulley assembly; 22. Lower pulley assembly;

[0035] 131. Base; 132. Air shaft; 133. Servo motor;

[0036] 141. Hydraulic cylinder; 142. Annular limiting groove; 143. Mounting base one; 144. Mounting base two;

[0037] 151. U-shaped limiting plate; 152. U-shaped frame; 153. Connecting rod; 154. Electric push rod; 155. Guide rail two; 156. Slider two;

[0038] 211. Rectangular frame; 212. Partition; 213. Rod; 214. Curved baffle; 215. Spring; 216. Pulley 1;

[0039] 221. Adjusting rod one; 222. Adjusting rod two; 223. L-shaped mounting arm; 224. Pulley two;

[0040] 2211. Rectangular tube; 2212. Rectangular rod; 2213. Adjusting screw; 2214. Handle; 2215. Connecting rib; 2216. Contact plate; 2217. One wing bolt;

[0041] 2221. Crossbar; 2222. Moving rod; 2223. Foot pad; 2224. Through hole; 2225. Two wing bolts. Detailed Implementation

[0042] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0043] It should be noted that these figures are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0044] Reference Figures 1-7This utility model discloses a trenchless double-jacking pipe repair device for underground pipelines, comprising: a pipe jacking mechanism 10 installed in one of the shafts and a pulley block mechanism 20 installed in the other shaft. A winch 3 is installed on the ground on one side above the pulley block mechanism 20. The pipe jacking mechanism 10 includes a grid-shaped base frame 11 and a side baffle 12 connected to one end thereto. A guide pipe assembly 13 with a fixing function is slidably installed on the grid-shaped base frame 11. It also includes telescopic rod assemblies 14 respectively installed on both sides of the top of the grid-shaped base frame 11. The telescopic rod assemblies 14 are adapted to drive... The movable conduit assembly 13 moves back and forth, and the telescopic rod assemblies 14 slide through both ends of the conduit assembly 13. It also includes a lifting limiting assembly 15 that changes the travel length of the conduit assembly 13. Limiting openings 16 are respectively opened on both sides of the top of the conduit assembly 13. The lifting limiting assembly 15 includes U-shaped limiting plates 151 respectively embedded in the limiting openings 16. The U-shaped limiting plates 151 are respectively engaged and limited on the surface of the corresponding telescopic rod assembly 14. A U-shaped frame 152 is provided on the outer side of the conduit assembly 13, and connecting rods 153 are symmetrically provided on the inner side of the U-shaped frame 152. The bottom ends of connecting rods 153 are connected to corresponding U-shaped limiting plates 151. An electric push rod 154 is mounted on the top of the conduit assembly 13, and the extended end of the electric push rod 154 is connected to the U-shaped frame 152. Guide rails 17 are mounted on both sides of the top of the grid-shaped base frame 11, and sliders 18 are slidably connected to the guide rails 17. The sliders 18 are connected to the conduit assembly 13. The telescopic rod assembly 14 includes a hydraulic cylinder 141 and annular limiting grooves 142 respectively opened at both ends of its cylinder. The U-shaped limiting plate 151 is engaged within the annular limiting groove 142. One end of the hydraulic cylinder 141 is connected to a mounting base 143, and the other end is connected to a mounting base 144. The mounting base 143 is fixedly connected to the side baffle 12. The bottom of the mounting base 144 is connected to a slider 19, which is slidably mounted on the guide rail 17. The inner side of the U-shaped frame 152 is equipped with a guide rail 155, and a slider 156 is slidably connected to the guide rail 155. The slider 156 is connected to the U-shaped frame 152. When the electric push rod 154 extends, the U-shaped limiting plate 151 separates from the annular limiting groove 142.

[0045] Anchor bolts can be installed around the bottom of the grid-shaped base frame 11 to adjust the level of the device. The side of the side baffle 12 away from the grid-shaped base frame 11 can also be set as an arc surface or a flat surface to better fit different well wall conditions. During the insertion of pipes or other auxiliary pipe fittings, the U-shaped limiting plate 151 is engaged with the annular limiting groove 142 near the side baffle 12 and, together with the conduit assembly 13, fixes the corresponding pipe fittings. Then, the hydraulic cylinder 141 extends and retracts, due to the mounting base 143. For fixed installation, the cylinder body of the hydraulic cylinder 141 moves during its extension and retraction. When it extends to its maximum stroke, the extension of the electric push rod 154 causes the U-shaped limiting plate 151 to completely separate from the annular limiting groove 142. Then, the hydraulic cylinder 141 retracts again, so that another annular limiting groove 142 aligns with the limiting port 16, causing the lifting limiting assembly 15 to descend and the U-shaped limiting plate 151 to engage with the corresponding annular limiting groove 142, thereby changing the extension and retraction stroke of the subsequent hydraulic cylinder 141.

[0046] The conduit assembly 13 includes a base 131 and an air shaft 132 connected to one side thereon. A servo motor 133 is connected to the other side of the base 131. The output shaft of the servo motor 133 is connected to the air shaft 132. A clearance hole 1a corresponding to the servo motor 133 is provided on the side baffle 12.

[0047] The base 131 does not contact the hydraulic cylinder 141 to ensure the stability of the hydraulic cylinder 141's extension and retraction. This also ensures that the base 131 cannot move without being limited by the U-shaped limiting plate 151. Furthermore, when the servo motor 133 moves into the clearance hole 1a, one end of the servo motor 133 does not exceed the end face of the clearance hole 1a. When assembling the jacking pipe or other auxiliary pipe fittings onto the conduit assembly 13, air is injected into the air shaft 132 to increase its diameter, tightly fitting against the inner wall of the pipe and firmly clamping it. When pipe replacement or other operations are required, air is released to reduce the diameter of the air shaft 132, releasing the clamping force on the pipe. After the air shaft 132 is connected to the servo motor 133, the power and torque generated by the servo motor 133 are accurately transmitted to the pipe, driving the pipe to move or assemble with it. Real-time adjustment of the pipe jacking speed and direction is also provided to meet the needs of pipe jacking construction under different geological conditions and construction requirements, thereby improving the quality and efficiency of construction.

[0048] The pulley block mechanism 20 includes an upper pulley assembly 21 and a lower pulley assembly 22. The upper pulley assembly 21 includes a rectangular frame 211 and a partition 212 connected to its inner side. There are at least two rods 213 connected to the side wall of the rectangular frame 211 on both sides of the partition 212. It also includes two arc-shaped baffles 214 symmetrically and slidably mounted on the rods 213. Springs 215 mounted on the rods 213 are respectively provided between the arc-shaped baffles 214 and the partition 212. A pulley 216 is installed on one side of the partition 212. The pulley 216 is located between two of the rods 213.

[0049] The arc surfaces of the arc-shaped baffles 214 are respectively set on opposite sides to better fit the arc surface of the wellhead. Before the winch 3, together with the traction rope, connector and other equipment, pulls the pipeline, the arc-shaped baffles 214 move towards each other, so that the arc surfaces of the arc-shaped baffles 214 fit against the pipe opening, and under the action of the spring 215, they play a limiting and fixing role, thereby initially guiding the traction rope, and together with the pulley assembly 22, improving the stability of the entire pipe jacking equipment.

[0050] The pulley assembly 22 includes an adjusting rod 1 221 and adjusting rods 222 connected to its two sides respectively. L-shaped mounting arms 223 are connected to opposite sides of the adjusting rods 222, and pulleys 224 are installed between the bottom ends of the L-shaped mounting arms 223. The adjusting rod 1 221 includes a rectangular tube 2211 with one open side. A rectangular rod 2212 slides through the open end of the rectangular tube 2211, and an adjusting screw 2213 is threaded through the other end. One end of the adjusting screw 2213 is rotatably connected to the rectangular rod 2212 via a nut seat, and a handle 2214 is installed at the other end. A contact plate 2216 is connected to the end of the rectangular rod 2212 away from the adjusting screw 2213. The rectangular tube 2211 is close to... One end of the contact plate 2216 is threaded with a wing bolt 2217 that abuts against the surface of the rectangular rod 2212. Two or more connecting ribs 2215 are connected to both sides of the rectangular tube 2211. One end of the connecting ribs 2215 is connected to the adjusting rod 222. The adjusting rod 222 includes a crossbar 2221 with an opening on one side and a sliding rod 2222 that slides through its opening end. The end of the sliding rod 2222 away from the crossbar 2221 is connected with a pad 2223. Several through holes 2224 are spaced apart on the sliding rod 2222. A wing bolt 2225 is threaded through the crossbar 2221. One end of the wing bolt 2225 is inserted into the corresponding through hole 2224.

[0051] The opposite sides of the contact plate 2216 and the pad 2223 can be set with corresponding arc surfaces or planes according to the conditions inside the well for better fixation. During the installation of the pulley assembly 22, the length of the moving rod 2222 is adjusted according to the diameter inside the well to make it fit against the well wall, and the wing bolt 2225 is limited to the corresponding through hole 2224. Then, the handle 2214 is turned to drive the adjusting screw 2213 to rotate. Under the action of the thread, the adjusting screw 2213 pushes the rectangular rod 2212 to slide inside the rectangular tube 2211. The length of the adjusting rod 221 is precisely adjusted so that the contact plate 2216 fits against the well wall on the other side. It is then fixed by the butterfly bolt 2217, thereby fixing the pulley assembly 22 and adjusting it to a horizontal state. Since the pulley 216 initially guides the traction rope, the downward-pulling traction rope then passes through the pulley 224, ensuring that the relevant components can accurately pass through the pulley 224, improving the accuracy and quality of pipe jacking construction, and preventing the traction rope from deviating during the pipe jacking process.

[0052] The implementation principle of this embodiment is as follows: During use, the lower pulley assembly 22 is assembled and adjusted into the well, and the upper pulley assembly 21 is assembled and adjusted to the wellhead. Simultaneously, in conjunction with the winch 3, the traction rope wound on the winch 3 passes sequentially through pulley one 216 and pulley two 224. Auxiliary tools such as connectors are used to connect to one end of the pipe fitting. The jacking operation is performed when the hydraulic cylinder 141 extends and retracts. During this process, when the jacking pipe or other auxiliary pipe fittings are assembled onto the guide pipe assembly 13, air is injected into the air shaft 132 to increase its diameter, tightly fitting against the inner wall of the pipe and firmly clamping it. When it is necessary to replace the pipe or perform other operations, the air is released, causing the diameter of the air shaft 132 to decrease, releasing the clamping of the pipe. After the air shaft 132 is connected to the servo motor 133, the power and torque generated by the servo motor 133 are accurately transmitted to the pipe, driving the pipe. The pipe is moved or assembled with the pipeline, and the pipeline jacking speed and direction are adjusted in real time. During this process, the U-shaped limiting plate 151 is engaged with the annular limiting groove 142 on the right side, and the hydraulic cylinder 141 is in a retracted state. Then the hydraulic cylinder 141 extends and works with the winch 3 to pull the pipe. The base 131 moves away from the side baffle 12. At this time, part of the assembled pipe fitting enters the pipeline. Then the extension of the electric push rod 154 separates the U-shaped limiting plate 151 from the annular limiting groove 142. Then the hydraulic cylinder 141 retracts, causing the annular limiting groove 142 on the left side to move to the corresponding position of the limiting port 16. At this time, the lifting limiting component 15 descends, causing the U-shaped limiting plate 151 to engage with the corresponding annular limiting groove 142. Then the hydraulic cylinder 141 continues to extend, thereby increasing the distance between the base 131 and the side baffle 12. The above extension and retraction operation is repeated when the pipe is jacked.

[0053] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A trenchless double-jacking pipe repair device for underground pipelines, comprising: The pipe jacking mechanism (10) installed in one well and the pulley block mechanism (20) installed in the other well, with a winch (3) provided on one side of the ground above the pulley block mechanism (20), characterized in that the pipe jacking mechanism (10) includes a grid-shaped base frame (11) and a side baffle (12) connected to one end thereto, a guide tube assembly (13) with a fixing function is slidably installed on the grid-shaped base frame (11), and also includes telescopic rod assemblies (14) respectively installed on both sides of the top of the grid-shaped base frame (11), the telescopic rod assemblies (14) being adapted to drive the guide tube assembly (13) to move back and forth, and the telescopic rod assemblies (14) respectively slidingly passing through both ends of the guide tube assembly (13); It also includes a lifting limiting component (15) for changing the travel length of the catheter assembly (13). The top two sides of the catheter assembly (13) are respectively provided with limiting ports (16). The lifting limiting component (15) includes U-shaped limiting plates (151) respectively embedded in the limiting ports (16). The U-shaped limiting plates (151) are respectively snapped and limited on the surface of the corresponding telescopic rod assembly (14). The outer side of the catheter assembly (13) is provided with a U-shaped frame (152). The inner side of the U-shaped frame (152) is symmetrically provided with connecting rods (153). The bottom end of the connecting rod (153) is respectively connected to the corresponding U-shaped limiting plate (151). The top of the catheter assembly (13) is equipped with an electric push rod (154). The extended end of the electric push rod (154) is connected to the U-shaped frame (152).

2. The trenchless double-jacking pipe repair device for underground pipelines according to claim 1, characterized in that, The top two sides of the grid-shaped base frame (11) are respectively equipped with guide rails (17), and sliders (18) are slidably connected on the guide rails (17). The sliders (18) are respectively connected to the conduit assembly (13).

3. The trenchless double-jacking pipe repair device for underground pipelines according to claim 2, characterized in that, The telescopic rod assembly (14) includes a hydraulic cylinder (141) and annular limiting grooves (142) respectively opened on both ends of its cylinder barrel. The U-shaped limiting plate (151) is snapped into the annular limiting groove (142). One end of the hydraulic cylinder (141) is connected to a mounting seat one (143), and the other end is connected to a mounting seat two (144). The mounting seat one (143) is fixedly connected to the side baffle (12). The bottom of the mounting seat two (144) is connected to a slider three (19), and the slider three (19) is slidably mounted on the guide rail one (17).

4. The trenchless double-jacking pipe repair device for underground pipelines according to claim 1, characterized in that, The conduit assembly (13) includes a base (131) and an air shaft (132) connected to one side thereon. A servo motor (133) is connected to the other side of the base (131). The output shaft of the servo motor (133) is connected to the air shaft (132). A clearance hole (1a) corresponding to the servo motor (133) is provided on the side baffle (12).

5. The trenchless double-jacking pipe repair device for underground pipelines according to claim 2, characterized in that, The inner side of the U-shaped frame (152) is respectively equipped with guide rails (155), and sliders (156) are slidably connected on the guide rails (155). The sliders (156) are respectively connected to the U-shaped frame (152). When the electric push rod (154) extends, the U-shaped limiting plate (151) separates from the annular limiting groove (142).

6. The trenchless double-jacking pipe repair device for underground pipelines according to claim 1, characterized in that, The pulley assembly (20) includes an upper pulley assembly (21) and a lower pulley assembly (22). The upper pulley assembly (21) includes a rectangular frame (211) and a partition (212) connected to its inner side. The partition (212) has at least two rods (213) connected to the side wall of the rectangular frame (211) on both sides. It also includes two arc-shaped baffles (214) symmetrically and slidably mounted on the rods (213). The arc-shaped baffles (214) and the partition (212) are respectively provided with springs (215) mounted on the rods (213). A pulley (216) is installed on one side of the partition (212). The pulley (216) is located between two of the rods (213).

7. The trenchless double-jacking pipe repair device for underground pipelines according to claim 6, characterized in that, The pulley assembly (22) includes an adjusting rod one (221) and adjusting rod two (222) connected to its two sides respectively. L-shaped mounting arms (223) are connected to opposite sides of the adjusting rod two (222). A pulley two (224) is installed between the bottom ends of the L-shaped mounting arms (223). The adjusting rod one (221) includes a rectangular tube (2211) with an opening on one side. A rectangular rod (2212) slides through the open end of the rectangular tube (2211), and an adjusting screw (2213) is threaded through the other end. One end of the adjusting screw (2213) is rotatably connected to the rectangular rod (2212) via a nut seat, and a handle (2214) is installed at the other end. A contact plate (2216) is connected to the end of the rectangular rod (2212) away from the adjusting screw (2213). The rectangular tube (2211) rests against... One end of the near contact plate (2216) is threaded with a butterfly bolt (2217) that abuts against the surface of the rectangular rod (2212). The two sides of the rectangular tube (2211) are connected with at least two connecting ribs (2215). One end of the connecting ribs (2215) is connected to the second adjusting rod (222). The second adjusting rod (222) includes a crossbar (2221) with an opening on one side and a moving rod (2222) that slides through its opening end. The end of the moving rod (2222) away from the crossbar (2221) is connected with a pad (2223). The moving rod (2222) is provided with several through holes (2224) spaced apart. The crossbar (2221) is threaded with a butterfly bolt (2225). One end of the butterfly bolt (2225) is inserted into the corresponding through hole (2224).

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