Water stop device of tube push bench

Abstract

The invention discloses a pipe jacking machine water stopping device, and relates to the technical field of water stopping devices, the pipe jacking machine water stopping device comprises a mounting seat, a pipeline penetrating hole is formed in the middle of the mounting seat, and a mounting groove surrounding the pipeline penetrating hole and communicating with the pipeline penetrating hole is formed in the mounting seat; the connecting ring is arranged in the mounting groove, a pipeline connecting hole is formed in the middle of the connecting ring, the central axis of the pipeline connecting hole coincides with the central axis of the pipeline penetrating hole, and a containing groove surrounding the pipeline connecting hole and communicating with the pipeline connecting hole is formed in the connecting ring; the water stop films are connected end to end, surround and wrap the outer wall of the connecting ring, penetrate through the pipeline connecting hole and are in sliding contact with the outer wall of the connecting ring and the wall of the mounting groove; the expansion bag is installed in the containing groove, and the expansion bag drives the water stop film to protrude into the pipeline connecting hole; and the water stop ring is arranged on the mounting base, surrounds the pipeline penetrating hole and is located on the side, away from the pipeline drilling hole, of the connecting ring. The water stopping effect can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of water-stopping devices, and in particular to a water-stopping device for a pipe jacking machine. Background Art

[0002] The pipe jacking machine uses mechanical force to push the pipe underground while using a cutting device to cut the soil.

[0003] Specifically, a pipe jacking machine consists of several parts, including the main jacking system, cutting system, pipe propulsion system, support system, lubrication system, and control system. The main jacking system transmits thrust to the pipe through devices such as jacking rods, propelling it forward. The cutting system is responsible for cutting the soil and discharging the cut soil to the rear of the pipe through a soil discharge device. The pipe propulsion system uses hydraulic cylinders and guide devices to maintain the correct position of the pipe and adjust the propulsion speed and force. The support system is used to maintain the stability of the pipe jacking machine during underground construction. The lubrication system is used to reduce friction during cutting, improve cutting efficiency, and extend tool life. The control system monitors and controls various parts of the pipe jacking machine in real time through sensors and joysticks to ensure construction quality.

[0004] During construction, to reduce the possibility of mud and groundwater leakage from the gap between the pipe jacking machine's sidewall and the soil, a waterstop is typically installed between the excavation opening and the pipe's outer wall. However, in some complex geological conditions, the waterstop's effectiveness is often poor, often unsatisfactory, and can hinder construction progress. Summary of the Invention

[0005] In order to improve the water-stopping effect, the present application provides a water-stopping device for a pipe jacking machine.

[0006] This application provides a water-stopping device for a pipe jacking machine, which adopts the following technical solution: A water-stopping device for a pipe jacking machine, comprising A mounting seat, wherein a pipe penetration hole is formed in the middle of the mounting seat, and a mounting groove is formed on the mounting seat surrounding and communicating with the pipe penetration hole; A connecting ring is disposed in the mounting groove, a pipe connecting hole is formed in the middle of the connecting ring, a central axis of the pipe connecting hole coincides with the central axis of the pipe through-hole, and a receiving groove is formed on the connecting ring that surrounds and communicates with the pipe connecting hole; A water-stop membrane is connected end to end and surrounds the outer wall of the connecting ring, the water-stop membrane passes through the pipe connecting hole, and the water-stop membrane is in sliding contact with the outer wall of the connecting ring and the wall of the installation groove respectively; an expansion bladder installed in the receiving groove, the expansion bladder driving the water-stop membrane to protrude into the pipe connecting hole; A water stop ring is arranged on the mounting seat and surrounds the pipe penetration hole. The water stop ring is located on the side of the connecting ring away from the pipe drilling hole.

[0007] By adopting the above technical solution, the pipe penetration hole in the middle of the mounting seat allows the pipe to pass through, and the mounting groove arranged around it is used to install the connecting ring. The pipe connection hole of the connecting ring is coaxial with the pipe penetration hole to ensure smooth passage of the pipe. The water-stop membrane surrounds and wraps the outer wall of the connecting ring, passes through the pipe connection hole, and slides in contact with the outer wall of the connecting ring and the wall of the mounting groove. The expansion bladder is installed in the receiving groove of the connecting ring, and drives the water-stop membrane to protrude into the pipe connection hole through expansion, thereby enhancing the sealing effect, and when the pipe passes through, the water-stop membrane can remain in contact with the outer wall of the pipe. In addition, the setting of the water-stop ring further enhances the water-stopping ability of the device away from the pipe drilling side, effectively reducing the infiltration of groundwater or mud. The overall design is compact and easy to operate, achieving efficient water-stopping during pipe jacking operations.

[0008] Optionally, the connecting ring is slidably penetrated by a sliding membrane connected end to end, and the sliding membrane is located between the expansion bag and the water-stop membrane and is in sliding contact with each other; An elastic member is provided in the connecting ring, and there are a plurality of elastic members which are respectively connected to the two ends of the water-stop membrane and the connecting ring.

[0009] By adopting the above technical solution, the sliding membrane is connected end to end and is located between the expansion bladder and the water-stop membrane, making sliding contact with both, thereby reducing the friction generated when the water-stop membrane slides.

[0010] Optionally, the elastic member is an elastic tension spring, and there are two groups of the elastic tension springs, which are respectively arranged at both ends of the sliding membrane. Each group of the elastic tension springs has multiple elastic tension springs, which are evenly spaced along the circumferential direction.

[0011] By adopting the above technical solution, the elastic tension spring serves as a key component connecting the water-stop membrane and the connecting ring. Through its elastic force, the water-stop membrane always maintains a certain tension, so that the sliding membrane driven by the water-stop membrane to slide can retreat, buffering the extrusion state between the outer wall of the expansion bag and the wall of the accommodating groove.

[0012] Optionally, the mounting seat is provided with a scraper, and the scraper is installed around the side wall of the pipe penetration hole, and the scraper is located on the side of the connecting ring away from the water stop ring.

[0013] By adopting the above technical solution, a scraper is provided on the mounting seat and is installed around the side wall of the pipe penetration hole to remove dirt, mud and other impurities on the surface when the pipe passes through, so that the water-stop membrane has good contact with the pipe surface, thereby improving the sealing effect.

[0014] Optionally, the mounting seat is provided with an annular scraper, which is located at the notch of the mounting groove and away from the side of the water stop ring, and the annular scraper is in sliding contact with the water stop membrane.

[0015] By adopting this technical solution, the annular scraper is located on the side of the mounting groove away from the waterstop ring, in sliding contact with the waterstop membrane. This design further enhances the cleaning effect, effectively removing impurities and residues from the surface of the waterstop membrane, keeping it clean and smooth, and reducing the possibility of mud entering between the mounting groove wall and the outer wall of the connecting ring.

[0016] Optionally, hollow grooves surrounding the pipeline penetration hole are respectively formed on the groove wall relative to the installation groove and the outer walls at both ends of the connecting ring.

[0017] By adopting the above technical solution, hollow grooves surrounding the pipe penetration holes are formed on the relative groove walls of the installation groove and the outer walls at both ends of the connecting ring. The design of these hollow grooves helps to reduce the friction generated when the water-stop film slides.

[0018] Optionally, a plurality of plug-in columns are evenly spaced along the circumferential direction on the outer peripheral side wall of the mounting seat.

[0019] By adopting the above technical solution, a plurality of plug-in columns are provided on the outer peripheral side wall of the mounting seat, which is conducive to improving the installation stability of the mounting seat.

[0020] Optionally, the plug-in post is slidably connected to the mounting seat, the mounting seat is rotatably connected to a drive nut corresponding to the plug-in post one by one, and the plug-in post is threadedly connected to the drive nut; The mounting seat is provided with a limiting member that limits the rotation of the plug-in column; A driving rope is slidably inserted into the mounting seat, the driving rope is wound around the outer periphery of the driving nut, and a driving block corresponding to the plug-in column is slidably connected to the mounting seat, and the two ends of the driving rope are respectively fixed to the opposite side walls of the driving block; When the top pipe is drilled and passes through the pipe penetration hole, the water-stop membrane is driven to slide, which in turn drives the driving block to slide. At this time, the driving rope pulls the driving nut to rotate, driving the plug-in column to slide out of the mounting seat; When the water-stop membrane drives the driving block to move in the reverse direction, the driving rope pulls the driving nut to reverse, and drives the plug-in column to slide into the mounting seat.

[0021] By adopting this technical solution, the plug-in column is slidably connected to the mounting base and threaded via a drive nut. When drilling the pipe through the pipe hole, the sliding of the water-stop membrane causes the drive block to slide, which in turn rotates the drive nut via the drive rope, allowing the plug-in column to slide out of the mounting base and into the soil, simplifying the installation of the plug-in column.

[0022] Optionally, the limiting member is a limiting block, which is arranged on the mounting seat and corresponds one-to-one to the plug-in column, and the plug-in column is formed with a limiting groove for the limiting block to slide axially.

[0023] By adopting the above technical solution, the limiting block is set on the mounting seat and corresponds one-to-one with the plug-in column. The limiting groove formed on the plug-in column allows the limiting block to slide axially. This design enables the plug-in column to be limited in rotation when the drive nut rotates.

[0024] In summary, this application has at least one of the following beneficial effects: 1. The waterstop membrane wraps around the outer wall of the connecting ring and passes through the pipe connection hole, sliding against the outer wall of the connecting ring and the wall of the installation groove. An expansion bladder is installed in the receiving groove of the connecting ring. This expansion drives the waterstop membrane into the pipe connection hole, enhancing the sealing effect. The waterstop membrane maintains contact with the outer wall of the pipe when the pipe passes through. Furthermore, the installation of the waterstop ring further enhances the device's water-stopping ability away from the pipe borehole, effectively reducing the infiltration of groundwater or mud. 2. Multiple plug-in columns are set on the outer side wall of the mounting base, which is conducive to improving the installation stability of the mounting base. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Schematic diagram of the external structure of an embodiment of the present application; Figure 2 This is a schematic diagram of the internal cross-section of the mounting base and the connecting ring in an embodiment of the present application; Figure 3 yes Figure 2 A magnified schematic diagram of part A; Figure 4 yes Figure 2 An enlarged schematic diagram of part B; Figure 5 It is a schematic internal cross-sectional view of an embodiment of the present application.

[0026] Figure numerals: 1. Mounting seat; 11. Pipe penetration hole; 12. Mounting groove; 13. Scraper strip; 14. Annular scraper; 15. Connecting column; 151. Limiting groove; 16. Drive nut; 17. Drive rope; 18. Drive block; 19. Limiting block; 2. Connecting ring; 21. Pipe connecting hole; 22. Accommodating groove; 23. Sliding membrane; 24. Elastic tension spring; 3. Water-stop membrane; 4. Expansion bag; 5. Water-stop ring; 6. Hollow groove. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-5 This application is described in further detail.

[0028] An embodiment of the present application discloses a water-stopping device for a pipe jacking machine.

[0029] The inventors of this application discovered that during the construction of a pipe jacking machine under complex geological conditions, the existing waterstops have poor water-stopping effects, which can easily lead to the intrusion of mud and groundwater, thus affecting the quality and progress of construction. To this end, this application mainly adopts a new waterstop device for pipe jacking machines. Through a multi-level sealing structure and a dynamic adjustment mechanism, it achieves a significant improvement in waterstopping effects, ensuring the quality and progress of construction. This application is further described in detail below.

[0030] See also Figure 1 and Figure 2 The water-stopping device of the pipe jacking machine provided in the embodiment of the present application includes a mounting seat 1, a connecting ring 2 and a water-stopping membrane 3.

[0031] The mounting base 1 is cylindrical in structure. A support groove is formed in the soil around the hole formed by the pipe jacking machine. The mounting base 1 is installed in the support groove. A support plate is fixed to the mounting base 1, and the support plate extends away from the mounting base 1. The mounting base 1 is also penetrated by a fixing post, which is inserted into the soil to fix the mounting base 1.

[0032] A pipe hole 11 is formed in the center of the mounting base 1, with the central axis of the hole parallel to the drilling direction of the pipe jacking machine. The mounting base 1 is constructed of high-strength aluminum alloy. The hole 11 ensures smooth passage of the pipe used by the pipe jacking machine. The mounting base 1 is formed with a mounting groove 12, which is an annular groove structure and surrounds and communicates with the pipe hole 11. When the pipe jacking machine drills a hole in the soil, the pipe passes through the hole 11.

[0033] See also Figure 2 and Figure 3 The mounting base 1 is provided with a scraper 13. The scraper 13 is annular and fixedly connected to the side wall of the pipe penetration hole 11. The scraper 13 is located on the side of the pipe drilling direction. The scraper 13 can be made of rubber, silicone, or other materials. The scraper 13 is in sliding contact with the outer wall of the pipe. The scraper 13 is used to reduce the possibility of mud and groundwater passing through the pipe and the wall of the pipe penetration hole 11. On the other hand, it limits the scraping of mud from the outer wall of the pipe during the retraction process of the pipe, ensuring a better sealing effect.

[0034] The connecting ring 2 is an annular structure and is installed in the mounting groove 12. A pipe connection hole 21 is formed in the center of the connecting ring 2. The diameter of the pipe insertion hole 11 is equal to that of the pipe connection hole 21, and the central axis of the pipe connection hole 21 coincides with the central axis of the pipe insertion hole 11. The connecting ring 2 is also made of high-strength aluminum alloy. The pipe connection hole 21 of the connecting ring 2 ensures smooth passage of the pipe of the pipe jacking machine.

[0035] The water-stop membrane 3 is connected end to end and wraps around the outer wall of the connecting ring 2. The water-stop membrane 3 passes through the pipe connection hole 21. When the water-stop membrane 3 is installed in the installation groove 12 following the connecting ring 2, the water-stop membrane 3 abuts the side groove wall of the installation groove 12. The connecting ring 2 is formed with a receiving groove 22, which is an annular groove structure and surrounds and communicates with the pipe connection hole 21. The connecting ring 2 is provided with an expansion bladder 4, which is an annular structure and is installed in the receiving groove 22. The expansion bladder 4 surrounds the pipe connection hole 21.

[0036] During use, the expansion bladder 4 drives the water-stop membrane 3 into the pipe connection hole 21. Made of a special rubber material, the expansion bladder 4 can be replaced with other high-compression and resilient materials. Inflated by air or hydraulic pressure, the water-stop membrane 3 dynamically adjusts during advancement, further enhancing the water-stopping effect. The design of the expansion bladder 4 allows the water-stop membrane 3 to dynamically adjust according to the pipe's outer diameter and geological conditions during advancement, ensuring excellent sealing performance.

[0037] When the pipe passes through the pipe connection hole 21, the expansion bladder 4 expands and drives the water-stop membrane 3 to fit on the outer wall of the pipe. When the pipe slides, it drives the water-stop membrane 3 to slide. At this time, the water-stop membrane 3 is in sliding contact with the outer wall of the connecting ring 2 and the side groove wall of the installation groove 12 respectively. The water-stop membrane 3 can be dynamically adjusted during the advancement of the pipe jacking machine to form a good seal, which is conducive to maintaining the fit between the water-stop membrane 3 and the outer wall of the pipe, reducing the possibility of mud and groundwater leaking through the pipe and the water-stop membrane 3, and improving the water-stop effect. The water-stop membrane 3 can be made of high-strength polyurethane film material and can be replaced with other high-friction coefficient materials, such as polytetrafluoroethylene film, to ensure its sealing and wear resistance under complex geological conditions.

[0038] The mounting base 1 is provided with an annular scraper 14, which surrounds the pipe penetration hole 11 and is fixedly connected to the sidewall of the mounting groove 12 and located at the notch of the mounting groove 12. The annular scraper 14 is located on the side of the connecting ring 2 away from the water stop ring 5. The annular scraper 14 is in sliding contact with the outer wall of the water stop membrane 3. When the pipe advances through the pipe penetration hole 11, the annular scraper 14 scrapes mud on the outer wall of the water stop membrane 3, reducing the possibility of mud entering the space between the mounting groove 12 and the connecting ring 2.

[0039] The connecting ring 2 is slidably penetrated by a sliding membrane 23, which is connected end to end. The sliding membrane 23 is located between the expansion bladder 4 and the water-stop membrane 3, and the sliding membrane 23 is in sliding contact with the water-stop membrane 3 and the expansion bladder 4 respectively. The sliding membrane 23 can be made of plastic, and the sliding membrane 23 is smooth and has a certain elastic deformation ability. Hollow grooves 6 are formed on the groove walls on the opposite sides of the installation groove 12 facing the connecting ring 2 and the outer walls at both ends of the connecting ring 2, respectively. The hollow grooves 6 are in an annular groove structure and surround the pipe penetration hole 11. When the pipe drives the water-stop membrane 3 to slide through the pipe connection hole 21, the water-stop membrane 3 slides on the sliding membrane 23 through the hollow groove 6 and the water-stop membrane 3, thereby reducing the friction generated during the sliding of the water-stop membrane 3.

[0040] An elastic member, in the form of a tension spring 24, is disposed within the connecting ring 2. Two sets of tension springs 24 are provided, one for each end of the sliding membrane 23. Each set of tension springs 24 includes multiple springs evenly spaced circumferentially about the central axis of the connecting ring 2. One end of the tension spring 24 is fixedly connected to the water-stop membrane 3, while the other end is fixedly connected to the connecting ring 2. The elastic member can be a high-strength tension spring 24, and can be replaced with other high-performance elastic materials, such as a natural rubber tension spring.

[0041] When a section of pipe passes through the pipe connecting hole 21, causing the water-stop membrane 3 to slide, the water-stop membrane 3 applies a friction force in the same direction of pipe movement to the sliding membrane 23 during the process of sliding on the sliding membrane 23, driving the sliding membrane 23 forward. At this time, a group of elastic tension springs 24 in the forward direction of the sliding membrane 23 contracts, and the other group of elastic tension springs 24 stretches; when the tension of the stretched elastic tension springs 24 reaches a critical value, the elastic tension springs 24 drive the sliding membrane 23 to retreat in the opposite direction of pipe sliding, so that the state of extrusion between the outer wall of the expansion bag 4 and the wall of the receiving groove 22 when the sliding membrane 23 moves forward is alleviated; at the same time, during the gap time when the lower section of the pipe enters the pipe connecting hole 21, the elastic tension springs 24 are released to drive the sliding membrane 23 to return to the state before sliding, and at the same time, the state of extrusion between the outer wall of the expansion bag 4 and the wall of the receiving groove 22 is restored.

[0042] The mounting base 1 is provided with a water stop ring 5, which is fixed to the side wall of the pipe penetration hole 11. The water stop ring 5 surrounds the pipe penetration hole 11 and is located on the side of the connecting ring 2 away from the scraper 13. The water stop ring 5 is in sliding contact with the outer wall of the pipe to further reduce the possibility of groundwater and mud leakage.

[0043] See also Figure 2 and Figure 4 The mounting base 1 is slidably provided with a plug-in column 15, which is provided in plurality and is evenly spaced along the axial direction with the central axis of the pipe penetration hole 11 as the center. The plug-in column 15 can be made of a high-strength alloy material and can be replaced with other high-hardness materials to ensure its stability and reliability under complex geological conditions.

[0044] See also Figure 4 and Figure 5 The plug-in column 15 is threadedly connected to the mounting base 1, and a drive nut 16 is rotatably connected inside the mounting base 1. There are multiple drive nuts 16 and they correspond one to one with the plug-in column 15. The plug-in column 15 and the drive nut 16 are coaxially arranged and threadedly connected. The mounting base 1 is provided with a limiting member that limits the rotation of the plug-in column 15. The limiting member can adopt a design structure of a limiting block 19. The limiting block 19 is fixed to the mounting base 1. The outer peripheral side wall of the plug-in column 15 is formed with a limiting groove 151 extending in the circumferential direction. The limiting block 19 slides in the limiting groove 151. During the rotation of the drive nut 16, the limiting block 19 limits the rotation of the plug-in column 15, so that the plug-in column 15 can slide in the direction close to or away from the pipe penetration hole 11.

[0045] See also Figure 2 and Figure 4 A driving rope 17 is slidably inserted into the mounting base 1. There are multiple driving ropes 17 that correspond one-to-one with the plug-in columns 15. The driving rope 17 is wound around the outer periphery of the driving nut 16. A driving block 18 is slidably connected to the mounting base 1. There are multiple driving blocks 18 that correspond one-to-one with the plug-in columns 15. The sliding direction of the driving block 18 is parallel to the central axis of the pipe penetration hole 11. The water-stop membrane 3 abuts the side of the driving block 18 facing away from the plug-in column 15, and the two ends of the driving rope 17 are respectively fixed to the side walls on opposite sides of the driving block 18. When the pipe jacking machine drills a hole and the pipe passes through the pipe penetration hole 11, driving the water-stop membrane 3 to slide, the water-stop membrane 3 drives the driving block 18 to slide. At this time, the driving rope 17 pulls the driving nut 16 to rotate, driving the plug-in column 15 to slide out of the mounting base 1, and inserts it into the soil around the mounting base 1, thereby improving the installation stability of the mounting base 1. When the water-stop membrane 3 drives the driving block 18 to move in the reverse direction, the driving rope 17 pulls the driving nut 16 to reverse, and drives the plug-in column 15 to slide into the mounting seat 1, making it easy to disassemble and remove the mounting seat 1.

[0046] The implementation principle of the water-stopping device for a pipe jacking machine in the embodiment of the present application is as follows: The water-stop device significantly improves the water-stopping effect under complex geological conditions through a multi-level sealing structure and dynamic adjustment mechanism. The tight fit between the mounting base 1 and the connecting ring 2 forms a good basic seal; the design of the water-stop membrane 3 and the expansion bladder 4 ensures that they can be dynamically adjusted during the advancement of the pipe jacking machine, forming a more sealed effect; the design of the water-stop ring 5 and the scraper 13 further enhances the sealing performance of the water-stop device; ultimately, the reliability and stability of the water-stop device under complex geological conditions are significantly improved, ensuring the construction quality and progress. This water-stop device has significant innovation and practicality in actual application. Compared with the existing water-stop solution, it significantly improves the water-stopping effect and improves the construction quality and efficiency of the pipe jacking machine under complex geological conditions.

[0047] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A water stopping device for a pipe jacking machine, characterized in that: include A mounting seat (1), wherein a pipe penetration hole (11) is formed in the middle of the mounting seat (1), and a mounting groove (12) is formed on the mounting seat (1) surrounding and communicating with the pipe penetration hole (11); A connecting ring (2) is arranged in the installation groove (12), a pipe connecting hole (21) is formed in the middle of the connecting ring (2), the central axis of the pipe connecting hole (21) coincides with the central axis of the pipe penetration hole (11), and the connecting ring (2) is formed with a receiving groove (22) surrounding and communicating with the pipe connecting hole (21); A water-stop membrane (3) connected end to end and surrounding the outer wall of the connecting ring (2), the water-stop membrane (3) passing through the pipe connecting hole (21), and the water-stop membrane (3) respectively making sliding contact with the outer wall of the connecting ring (2) and the groove wall of the installation groove (12); An expansion bag (4) is installed in the containing groove (22), and the expansion bag (4) drives the water-stopping membrane (3) to protrude into the pipe connecting hole (21); A water stop ring (5) is arranged on the mounting seat (1) and surrounds the pipeline penetration hole (11); the water stop ring (5) is located on the side of the connecting ring (2) away from the pipeline drilling hole.

2. A water stopping device for a pipe jacking machine according to claim 1, characterized in that: The connecting ring (2) is slidably penetrated by a sliding membrane (23) connected end to end, and the sliding membrane (23) is located between the expansion bag (4) and the water stop membrane (3) and is in sliding contact with each other; An elastic member is arranged inside the connecting ring (2), and there are a plurality of elastic members which are respectively connected to the two ends of the water stop membrane (3) and the connecting ring (2).

3. A water stopping device for a pipe jacking machine according to claim 2, characterized in that: The elastic member is an elastic tension spring (24), and there are two groups of the elastic tension springs (24) which are respectively arranged at two ends of the sliding membrane (23), and each group of the elastic tension springs (24) has a plurality of elastic tension springs (24) which are evenly spaced along the circumferential direction.

4. A water stopping device for a pipe jacking machine according to claim 1, characterized in that: The mounting seat (1) is provided with a scraper strip (13), the scraper strip (13) being mounted around the peripheral wall of the pipeline penetration hole (11), and the scraper strip (13) being located on a side of the connecting ring (2) away from the water stop ring (5).

5. A water stopping device for a pipe jacking machine according to claim 4, characterized in that: The mounting seat (1) is provided with an annular scraper (14), the annular scraper (14) is located at the notch of the mounting groove (12) and away from the side of the water stop ring (5), and the annular scraper (14) is in sliding contact with the water stop membrane (3).

6. A water stopping device for a pipe jacking machine according to claim 1, characterized in that: Hollow grooves (6) surrounding the pipeline penetration hole (11) are respectively formed on the groove wall relative to the installation groove (12) and the outer walls at both ends of the connecting ring (2).

7. A water stopping device for a pipe jacking machine according to claim 1, characterized in that: A plurality of plug-in columns (15) are evenly spaced along the circumferential direction on the outer peripheral side wall of the mounting seat (1).

8. A water stopping device for a pipe jacking machine according to claim 7, characterized in that: The plug-in column (15) is slidably connected to the mounting seat (1), and the mounting seat (1) is rotatably connected to a driving nut (16) corresponding to the plug-in column (15) one by one, and the plug-in column (15) is threadedly connected to the driving nut (16); The mounting seat (1) is provided with a limiting member for limiting the rotation of the plug-in column (15); A driving rope (17) is slidably inserted into the mounting seat (1), the driving rope (17) is wound around the outer peripheral side of the driving nut (16), and a driving block (18) corresponding to the plug-in column (15) is slidably connected to the mounting seat (1), and two ends of the driving rope (17) are respectively fixed to the side walls of the driving block (18) on opposite sides. When the top pipe is drilled and passes through the pipe penetration hole (11), the water stop membrane (3) is driven to slide, thereby driving the driving block (18) to slide. At this time, the driving rope (17) pulls the driving nut (16) to rotate, driving the plug-in column (15) to slide out of the mounting seat (1); When the water-stop membrane (3) drives the driving block (18) to move in the reverse direction, the driving rope (17) pulls the driving nut (16) to reverse, thereby driving the plug-in column (15) to slide into the mounting seat (1).

9. A water stopping device for a pipe jacking machine according to claim 8, characterized in that: The limiting member is a limiting block (19), the limiting block (19) is arranged on the mounting seat (1) and corresponds one-to-one with the plug-in column (15), and the plug-in column (15) is formed with a limiting groove (151) for the limiting block (19) to slide along the axial direction.

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