Stepped self-locking sealing solid-wall top pull pipe
By adopting a stepped self-locking structure and a three-peak rubber ring design in the jacking pipe, the problem of poor sealing performance of existing jacking pipes is solved, achieving a good sealing performance and making it suitable for stable connections in underground engineering.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 重庆利财管道有限公司
- Filing Date
- 2025-05-22
- Publication Date
- 2026-04-17
AI Technical Summary
Existing solid-wall jacking pipes typically use simple plug-in or threaded connections, which have poor sealing performance and are prone to leakage problems, especially in underground engineering, which may lead to groundwater pollution and pipe corrosion.
The stepped self-locking structure is adopted, including a stepped structure and a self-locking structure on the outside of the first tube body, and a matching groove on the inside of the second tube body. Combined with a three-peak rubber ring and anti-slip texture, it ensures the sealing and stability of the tube body connection.
It significantly improves the sealing performance of pipe joints, prevents leakage, ensures the stability and practicality of the connection, and is suitable for the sealing needs of underground engineering.
Smart Images
Figure CN224135405U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of top-pull pipe technology, specifically a stepped self-locking sealed solid-wall top-pull pipe. Background Technology
[0002] The flexible, self-locking polyethylene solid-wall jacking pipe is manufactured using a multi-layer thermal winding process, forming a solid structural wall pipe section on equipment similar to that used for winding A-type pipes. The ends are then machined with sockets for trenchless jacking construction. The jacking pipe process combines the advantages of directional drilling (wide geological adaptability, strong obstacle handling capability, and minimal secondary disasters) with the precise control of jacking elevation. This process falls between directional drilling and slurry balance, and, combined with the flexible, self-locking polyethylene wound solid-wall pipe, replaces the traditional pipe pullback with a jacking process. A pipe section is installed at the end of the well, and the drill pipe passes through the center of the pipe, jacking the pipe at the tail end.
[0003] In pipeline engineering, solid-wall jacking pipes are widely used in municipal drainage, water supply, and communication cable laying. Existing solid-wall jacking pipes typically employ simple plug-in or threaded connections, resulting in poor sealing performance and a tendency to leak. Especially in underground engineering, the sealing of pipe connections is crucial; leaks can lead to groundwater pollution and pipe corrosion. Therefore, a stepped self-locking sealing solid-wall jacking pipe is proposed to address these issues. Utility Model Content
[0004] To address the shortcomings of existing technologies, this invention provides a stepped self-locking sealing solid-wall top-pull pipe, which boasts advantages such as excellent sealing performance and strong practicality. It solves the problem that existing solid-wall top-pull pipes typically employ simple plug-in or threaded connections, resulting in poor sealing performance and a tendency to leak. Especially in underground engineering, the sealing performance of pipe connections is crucial; leaks can lead to groundwater pollution, pipe corrosion, and other problems.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A stepped self-locking sealed solid wall top-pull pipe includes a pipe body structure, the pipe body structure includes a first pipe body and a second pipe body, the first pipe body is provided with a stepped structure on the outside, and the first pipe body is provided with a self-locking structure on the outside.
[0007] The stepped structure includes a first step opened on the outside of the first tube body, and a second step opened on the side of the first tube body away from the first step;
[0008] The self-locking structure includes a mounting groove formed on the outside of the first tube, and a three-peaked rubber ring is fitted onto the outside of the mounting groove.
[0009] Furthermore, the inner wall of the second tube is provided with a first slot and a second slot respectively corresponding to the positions of the first step and the second step. The first slot is adapted to the first step, and the second slot is adapted to the second step.
[0010] Furthermore, the cross-sections of the first and second card slots are both arc-shaped, and they respectively fit against the arc-shaped outer walls of the first and second steps.
[0011] Furthermore, the cross-section of the three-peaked rubber ring is three-peaked, and the three-peaked rubber ring includes three mutually spaced peaks and valleys located between the peaks, and the three peaks are respectively in close contact with the connecting surfaces of the first tube and the second tube.
[0012] Furthermore, the bottom of the mounting groove is fixedly connected with anti-slip texture, and the three-peaked rubber ring is tightly fitted with the anti-slip texture.
[0013] Furthermore, the outer diameter of the first tube body is adapted to the inner diameter of the second tube body, the outer diameter of the three-peaked rubber ring is adapted to the outer diameter of the mounting groove, and the inner diameter of the three-peaked rubber ring is smaller than the outer diameter of the first tube body.
[0014] Furthermore, a chamfer is provided at the connection between the first tube and the second tube, and the angle of the chamfer is between thirty and sixty degrees.
[0015] Compared with the prior art, this utility model provides a stepped self-locking sealing solid wall top-pull pipe, which has the following beneficial effects:
[0016] 1. This stepped self-locking sealing solid wall top-pull pipe, after the first pipe body and the second pipe body are connected in place, allows the three peaks of the three-peak rubber ring to fit tightly with the connection surfaces of the first pipe body and the second pipe body respectively, forming multiple seals, which significantly improves the sealing performance at the connection between the first pipe body and the second pipe body, effectively prevents leakage, and achieves the advantage of good sealing performance.
[0017] 2. This stepped self-locking sealing solid wall top pull pipe, with its chamfered design, facilitates the insertion of the first pipe body into the second pipe body, ensuring that the first step and the first slot, and the second step and the second slot are aligned and connected. The anti-slip texture effectively prevents the three-peak rubber ring from sliding in the installation groove, ensuring the stability of the connection and achieving the advantage of strong practicality. Attached Figure Description
[0018] Figure 1 This is a cross-sectional view of the structure of this utility model;
[0019] Figure 2 This is a cross-sectional view of the structure of the first tube body of this utility model;
[0020] Figure 3 This is a front view of the structure of the first tube body and the three-peaked rubber ring of this utility model;
[0021] Figure 4 This is a three-dimensional view of the structure of the three-peaked rubber ring of this utility model.
[0022] In the diagram: 1. Pipe structure; 11. First pipe body; 12. Second pipe body; 2. First step; 3. Second step; 4. Mounting groove; 5. Three-peak rubber ring; 6. First slot; 7. Second slot. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Please see Figures 1 to 4 In this embodiment, a stepped self-locking sealed solid wall top-pull pipe includes a pipe structure 1, which includes a first pipe body 11 and a second pipe body 12. The first pipe body 11 has a stepped structure on its outside and a self-locking structure on its outside. The stepped structure includes a first step 2 opened on the outside of the first pipe body 11 and a second step 3 opened on the side of the first pipe body 11 away from the first step 2.
[0025] The inner wall of the second tube 12 is provided with a first slot 6 and a second slot 7 corresponding to the positions of the first step 2 and the second step 3, respectively. The first slot 6 is adapted to the first step 2, and the second slot 7 is adapted to the second step 3.
[0026] Specifically, the cross-sections of the first groove 6 and the second groove 7 are both arc-shaped, and they respectively fit against the arc-shaped outer walls of the first step 2 and the second step 3. After the first tube 11 and the second tube 12 are connected in place, the three peaks of the three-peaked rubber ring 5 are tightly fitted with the connecting surfaces of the first tube 11 and the second tube 12, forming a multiple seal. This significantly improves the sealing performance at the connection between the first tube 11 and the second tube 12, effectively preventing leakage and achieving the advantage of good sealing performance.
[0027] Please see Figure 1 , Figure 3 and Figure 4 In this embodiment, the self-locking structure includes a mounting groove 4 opened on the outside of the first tube 11, and a three-peaked rubber ring 5 is sleeved on the outside of the mounting groove 4.
[0028] The cross-section of the three-peaked rubber ring 5 is three-peaked. The three-peaked rubber ring 5 includes three mutually spaced peaks and valleys located between the peaks, and the three peaks are respectively tightly attached to the connecting surfaces of the first tube 11 and the second tube 12.
[0029] Specifically, the bottom of the mounting groove 4 is fixedly connected with anti-slip textures, and the three-peaked rubber ring 5 fits tightly against these textures. The outer diameter of the first tube 11 matches the inner diameter of the second tube 12, and the outer diameter of the three-peaked rubber ring 5 matches the outer diameter of the mounting groove 4, with the inner diameter of the three-peaked rubber ring 5 being smaller than the outer diameter of the first tube 11. By setting the anti-slip textures, the three-peaked rubber ring 5 is effectively prevented from sliding within the mounting groove 4, ensuring connection stability and achieving the advantage of high practicality.
[0030] It should be noted that both the first tube 11 and the second tube 12 have chamfers at their connection points, with the chamfer angle ranging from 30 to 60 degrees. The chamfers facilitate the insertion of the first tube 11 into the second tube 12, ensuring that the first step 2 aligns with the first slot 6 and the second step 3 aligns with the second slot 7.
[0031] The working principle of the above embodiments is as follows:
[0032] In use, the three-peaked rubber ring 5 is fitted into the mounting groove 4 of the first tube 11, ensuring a tight fit between the three-peaked rubber ring 5 and the anti-slip texture in the mounting groove 4. The first tube 11 and the second tube 12 are prepared, ensuring their surfaces are clean and free of impurities. The outside of the first tube 11 is inserted into the inside of the second tube 12, ensuring that the first step 2 mates with the first slot 6 and the second step 3 mates with the second slot 7. A chamfer facilitates the smooth insertion of the first tube 11 into the second tube 12. Once the first tube 11 and the second tube 12 are connected, the three peaks of the three-peaked rubber ring 5 are tightly fitted to the connecting surfaces of the first tube 11 and the second tube 12, forming a multiple seal. After connection, a sealing test is performed to ensure there is no leakage at the connection point.
[0033] It should be noted that the orientations or positional relationships indicated herein are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of facilitating the description of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0034] 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0035] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A stepped self-locking sealed solid wall top-pull tube, characterized by: It includes a tube structure (1), which includes a first tube (11) and a second tube (12). The first tube (11) has a stepped structure on its exterior and a self-locking structure on its exterior. The stepped structure includes a first step (2) opened on the outside of the first tube (11), and a second step (3) opened on the side of the first tube (11) away from the first step (2). The self-locking structure includes a mounting groove (4) opened on the outside of the first tube (11), and a three-peaked rubber ring (5) is sleeved on the outside of the mounting groove (4).
2. A stepped self-locking sealed solid wall top-pull tube according to claim 1, characterized in that: The inner wall of the second tube (12) is provided with a first slot (6) and a second slot (7) corresponding to the positions of the first step (2) and the second step (3), respectively. The first slot (6) is adapted to the first step (2), and the second slot (7) is adapted to the second step (3).
3. A stepped self-locking sealed solid wall top-pull tube according to claim 2, characterized in that: The cross-sections of the first slot (6) and the second slot (7) are both arc-shaped, and they are respectively attached to the arc-shaped outer walls of the first step (2) and the second step (3).
4. A stepped self-locking sealed solid wall top-pull tube according to claim 1, characterized in that: The cross-section of the three-peaked rubber ring (5) is three-peaked. The three-peaked rubber ring (5) includes three mutually spaced peaks and valleys located between the peaks. The three peaks are respectively in close contact with the connecting surfaces of the first tube (11) and the second tube (12).
5. A stepped self-locking sealed solid-wall top-pull pipe according to claim 1, characterized in that: The bottom of the mounting groove (4) is fixedly connected with anti-slip texture, and the three-peak rubber ring (5) is tightly fitted with the anti-slip texture.
6. A stepped self-locking sealed solid wall top-pull tube according to claim 1, characterized in that: The outer diameter of the first tube (11) is adapted to the inner diameter of the second tube (12), the outer diameter of the three-peaked rubber ring (5) is adapted to the outer diameter of the mounting groove (4), and the inner diameter of the three-peaked rubber ring (5) is smaller than the outer diameter of the first tube (11).
7. A stepped self-locking sealed solid wall top-pull tube according to claim 1, characterized in that: Both the first tube (11) and the second tube (12) are provided with chamfers, and the angle of the chamfer is between 30 and 60 degrees.