Top-pull concrete pipe joint reinforcing device
The design of the outer ring assembly and the locking assembly solves the problems of cracking and leakage of the top-pull concrete pipe section during construction, realizes the stability and sealing of the pipe section connection, reduces construction costs and material waste, and improves project quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-03-20
AI Technical Summary
During the process of jacking up concrete pipe sections, cracking and leakage are prone to occur. Existing reinforcement methods are complicated to construct, costly, and have poor sealing effects.
The reinforcement device, consisting of an outer ring assembly, a connecting ring, and a locking assembly, ensures the stability and sealing of the pipe section connection by employing the combination of an outer ring assembly, a limiting protrusion, a sealing ring, and a locking assembly. The limiting protrusion engages with the limiting groove to form a circumferential limit, while the sealing ring and reinforcing ribs improve the sealing performance. The locking assembly achieves longitudinal limit by locking with a connecting rod and a nut.
It effectively prevents pipe section cracking and leakage, improves connection stability and sealing, reduces construction costs and material waste, and improves project quality and resource utilization efficiency.
Smart Images
Figure CN224016453U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sewage pipe installation technology, specifically to a top-pull concrete pipe section reinforcement device. Background Technology
[0002] In urban infrastructure construction, the laying of sewage pipelines on narrow roads has always been a challenging task. Traditional open-cut construction methods can severely affect traffic flow, generate a lot of noise and dust pollution, and pose a significant risk of damage to surrounding buildings and existing underground pipelines in narrow road environments. Therefore, the pipe jacking technology has emerged. It uses jacking equipment to push concrete pipe sections into the soil layer one by one in the working pit, without the need for large-scale road excavation, which greatly reduces the impact on urban traffic and the environment. It has been widely used in the laying of sewage pipelines on narrow roads.
[0003] In existing technologies, concrete pipe sections are prone to cracking during the jacking process due to various factors such as uneven jacking force, lateral pressure from complex geological conditions, and the pipe section's own weight. Traditional methods include external steel plate reinforcement and applying sealant at the pipe section joints. However, these methods have many limitations. External steel plate reinforcement is complex, costly, and difficult to adapt to the needs of pipe sections with different diameters. Simply applying sealant does not provide a lasting seal, and under long-term jacking stress, the sealant is prone to peeling off or failing, failing to fundamentally solve the leakage problem. Summary of the Invention
[0004] This utility model addresses the shortcomings of existing technologies by providing a top-pull concrete pipe section reinforcement device. Through the cooperation of the outer ring assembly, connecting ring, and locking assembly, it solves the problem that pipe sections are prone to cracking during construction due to various factors such as uneven top pull, lateral pressure from complex geological conditions, and the pipe section's own weight.
[0005] To achieve the above objectives, this utility model designs a concrete pipe section reinforcement device. This device is installed between adjacent concrete pipe sections for reinforcing adjacent concrete pipe sections. Multiple concrete pipe sections are reinforced by this device to form an integral concrete pipe. It includes an outer ring assembly installed on the connecting end of one pipe section, and a connecting ring that cooperates with the outer ring assembly is provided on the connecting end of the corresponding pipe section. One or more locking assemblies are also provided on the outer walls of the one pipe section and the other pipe section along the circumferential direction. The locking assembly includes two connecting seats that are respectively fixed on the outer walls of the one pipe section and the other pipe section, and a detachable connecting rod is installed between the two connecting seats.
[0006] Preferably, the outer ring assembly includes an outer ring, and a plurality of limiting protrusions are evenly spaced on the inner wall of the outer ring, the limiting protrusions being arranged circumferentially along the outer ring.
[0007] Preferably, one end of the limiting protrusion is flush with one side of the outer ring of the outer sleeve, and the other end has a gap with the other side of the outer ring. The gap is the reserved space for the connection of a certain pipe section.
[0008] Preferably, the outer ring is made of ductile iron. Ductile iron has good strength and toughness, which can effectively withstand the stress generated during the top tensioning process, prevent the outer ring from deforming or being damaged, and extend the service life of the device.
[0009] Preferably, each of the limiting protrusions has a slot, and a first sealing ring is disposed in one of the slots. Installing the first sealing ring through the slot not only facilitates installation but also ensures that the sealing ring is not easily displaced or detached under stress, thereby effectively improving the sealing performance of the pipe joint and preventing leakage.
[0010] Preferably, the sealing ring is made of a sealing strip, and the sealing strip is made of polytetrafluoroethylene (PTFE). PTFE has excellent corrosion resistance, aging resistance, and self-lubricating properties, enabling it to adapt to complex underground environments, maintain a long-term sealing effect, and reduce maintenance costs.
[0011] Preferably, the outer wall of the outer ring is provided with a plurality of reinforcing ribs evenly spaced. The addition of reinforcing ribs can significantly improve the stiffness and strength of the outer ring, enabling it to better distribute stress during the top tensioning process, reducing the risk of cracking due to stress concentration, and enhancing the reliability of the entire device.
[0012] Preferably, the connecting ring is provided with a limiting groove that mates with the limiting protrusion. This design can effectively prevent relative rotation or displacement of the pipe section during the pulling process, ensuring the accuracy of the pipe section connection and improving the stability of the connection.
[0013] Preferably, a second sealing ring is provided on the outer wall of the connecting ring, with one side of the second sealing ring tightly abutting the outer end of the other pipe section. The provision of the second sealing ring further enhances the sealing performance of the pipe section connection, forming a double seal, effectively preventing leakage of sewage or harmful gases, and ensuring the safety of the construction environment and the cleanliness of the inside of the pipe section.
[0014] Preferably, the connecting seat includes a base plate, one end of which is fixed with an end plate. The end plate has a through hole, and both ends of the connecting rod have external threads. The two ends of the connecting rod pass through the through holes of the two end plates respectively and are locked with nuts. This structural design makes the installation and disassembly of the locking assembly more convenient. By locking the connecting rod with nuts, the tightness of the connection can be adjusted according to actual needs, ensuring the stability of the pipe section connection.
[0015] Preferably, springs are fitted at both ends of the connecting rod, and a spring groove is formed on the inner side of the end plate. The spring is disposed in the spring groove, with one end of the spring abutting against the end plate and the other end abutting against the nut. A spring washer is provided between the spring and the end plate. The spring provides a certain degree of elastic compensation to accommodate the slight displacement that may occur during the pulling process of the pipe section, preventing uneven stress on the pipe section due to over-tightening. At the same time, the spring washer increases the reliability of the connection and prevents the nut from loosening.
[0016] Preferably, the base plate is fixed to the outer wall of one or more pipe sections by multiple bolts.
[0017] Preferably, there are two locking components, one at the top and one at the bottom of the pipe section. Having one locking component at each bottom ensures that the pipe section is subjected to uniform force in the vertical direction, enhances the overall stability of the connection, and effectively prevents the pipe section from swinging or shifting during the pulling process.
[0018] Preferably, there are four limiting protrusions. The four limiting protrusions are evenly distributed, which can provide a more stable limiting effect, making the force on the pipe sections more uniform during docking, and further improving the reliability and torsional resistance of the connection.
[0019] The beneficial effects of this utility model are:
[0020] 1. This utility model uses an outer ring in the outer ring assembly to fit between one pipe section and another, and uses a limiting protrusion and a limiting groove to engage, forming a circumferential limit between the two pipe sections, ensuring the stability of the installation between the pipe sections. By setting a first sealing ring between one pipe section and the outer ring, the integrity and sealing between the pipe sections can be further improved, effectively preventing leakage, ensuring the structural integrity and waterproof performance of municipal water supply and drainage pipelines and integrated pipe corridors, improving the overall quality of the project, and reducing later maintenance costs.
[0021] 2. This utility model can quickly assemble and connect one pipe section to another through a locking component, forming a longitudinal limit between two adjacent pipe sections, ensuring the stability of the connection between the pipe sections. The device has a reasonable structural design, is easy to install and disassemble, and reduces labor and time costs during construction. Compared with traditional reinforcement methods, such as frequent replacement of pipe sections damaged by cracks or leaks, this device greatly reduces material waste and repeated construction costs, improves resource utilization efficiency, and effectively controls the cost of the entire jacking construction project. Attached Figure Description
[0022] Figure 1 This is a perspective view of the present utility model;
[0023] Figure 2 This is a perspective view of a certain pipe section of this utility model;
[0024] Figure 3 This is a perspective view of the outer ring assembly of this utility model;
[0025] Figure 4 This is a partial structural diagram of the locking assembly of this utility model;
[0026] Figure 5 This is a perspective view of another pipe section of this utility model.
[0027] Figure label:
[0028] 1. A certain pipe section
[0029] 2. Another pipe section
[0030] 3. Outer ring assembly, 31. Outer ring, 311. Reinforcing rib, 32. Limiting protrusion, 321. Slot, 33. First sealing ring.
[0031] 4. Connecting ring, 41. Limiting groove, 42. Second sealing ring,
[0032] 5 Locking assembly, 51 Connecting seat, 511 Base plate, 512 End plate, 513 Bolt, 514 Spring groove, 52 Connecting rod, 53 Nut, 54 Spring, 55 Spring washer. Detailed Implementation
[0033] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.
[0034] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.
[0035] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0037] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.
[0038] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0039] like Figures 1-5 The concrete pipe section reinforcement device shown is installed between two adjacent concrete pipe sections 1 and 2 for reinforcement. It includes an outer ring assembly 3 at the connecting end of section 1, and a connecting ring 4 at the connecting end of section 2 that mates with the outer ring assembly 3. Two locking assemblies 5 are fixed to the outer walls of both sections, located at the top and bottom of the pipe sections respectively. Each locking assembly 5 includes two connecting seats 51 fixed to the outer walls of sections 1 and 2, with a detachable connecting rod 52 installed between the two connecting seats 51.
[0040] The outer ring assembly 3 includes an outer ring 31. Four limiting protrusions 32 are evenly spaced on the inner wall of the outer ring 31, arranged circumferentially around the outer ring 31. One end of each limiting protrusion 32 is flush with one side of the outer ring 31, while the other end has a gap with the other side of the outer ring 31. The connecting ring 4 has limiting grooves 41 that mate with the limiting protrusions 32. Each limiting protrusion 32 has a slot 321, and a first sealing ring 33 is disposed within each slot 321. Multiple reinforcing ribs 311 are evenly spaced on the outer wall of the outer ring 31. A second sealing ring 42 is provided on the outer wall of the connecting ring 4, with one side of the second sealing ring 42 tightly abutting the outer end of the other pipe section 2.
[0041] The connecting seat 51 includes a base plate 511, with an end plate 512 fixed to one end of the base plate 511. The end plate 512 has through holes, and the connecting rod 52 has external threads at both ends. The two ends of the connecting rod 52 pass through the through holes of the two end plates 512 respectively and are locked by nuts 53. Springs 54 are sleeved on both ends of the connecting rod 52. A spring groove 514 is opened on the inner side of the end plate 512, and the springs 54 are located in the spring groove 514. One end of the spring 54 abuts against the end plate 512, and the other end abuts against the nut 53. A spring washer 55 is provided between the spring 54 and the end plate 512. The base plate 511 is fixed to the outer wall of one pipe section 1 or another pipe section 2 by multiple bolts 513.
[0042] The specific implementation method is as follows:
[0043] During the jacking construction of sewage pipelines in narrow urban roads, construction workers use the jacking method to install the pipeline. After the first pipe section is fixed by a directional drilling rig, each subsequent connected pipe section needs to be reinforced with a jacking concrete pipe section reinforcement device. Taking two adjacent pipe sections as an example, they are defined as pipe section 1 and pipe section 2, respectively. First, the connecting ends of pipe section 1 and pipe section 2 are respectively fitted with outer ring assembly 3 and connecting ring 4, ensuring that the outer ring assembly 3 and connecting ring 4 fit tightly to form a circumferential limit and prevent relative rotation or displacement of the pipe sections during the jacking process. Next, the connecting seat 51 of the locking assembly 5 is fixed to the outer wall of pipe section 1 and pipe section 2, respectively, ensuring that the connecting seat 51 is firmly installed. Then, the connecting rod 52 is passed through the through hole of the connecting seat 51, and springs 54 and spring washers 55 are installed between the two ends of the connecting rod 52 and the connecting seat 51 to increase the elasticity and stability of the connection. Finally, tighten the connecting rod 52 with nut 53, and adjust the tightness of nut 53 to ensure a tight connection between one pipe section 1 and another pipe section 2, preventing loosening or displacement during the jacking process. Through these steps, construction personnel can quickly and easily complete the installation of the jacking concrete pipe section reinforcement device, ensuring the stability and sealing of the pipe section during the jacking process, effectively preventing pipe section cracking and leakage, and improving construction efficiency and project quality.
[0044] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.
Claims
1. A concrete pipe section reinforcement device, wherein the device is disposed between adjacent concrete pipe sections for reinforcing adjacent concrete pipe sections, and multiple concrete pipe sections are reinforced by the device to form a whole concrete pipe, characterized in that: It includes an outer ring assembly (3) disposed on the connecting end of a certain pipe section (1), and a connecting ring (4) that cooperates with the outer ring assembly (3) is provided on the connecting end of the corresponding other pipe section (2). One or more locking assemblies (5) are also provided on the outer walls of the certain pipe section (1) and the other pipe section (2) in the circumferential direction. The locking assembly (5) includes two connecting seats (51) respectively fixed on the outer walls of the certain pipe section (1) and the other pipe section (2), and a detachable connecting rod (52) is installed between the two connecting seats (51).
2. The concrete pipe section reinforcement device according to claim 1, characterized in that: The outer ring assembly (3) includes an outer ring (31), and a plurality of limiting protrusions (32) are provided at intervals along the circumferential direction on the inner wall of the outer ring (31).
3. The concrete pipe section reinforcement device according to claim 2, characterized in that: One end of the limiting protrusion (32) is flush with one side of the outer ring of the outer ring (31), and the other end has a gap with the other side of the outer ring (31).
4. The concrete pipe section reinforcement device according to claim 2, characterized in that: Each of the limiting protrusions (32) is provided with a slot (321), and a first sealing ring (33) is provided in each of the slots (321).
5. The concrete pipe section reinforcement device according to claim 2, characterized in that: The outer wall of the outer ring (31) is provided with a plurality of reinforcing ribs (311) evenly spaced.
6. The concrete pipe section reinforcement device according to claim 2, characterized in that: The connecting ring (4) is provided with a limiting groove (41) that cooperates with the limiting protrusion (32).
7. The concrete pipe section reinforcement device according to claim 1, characterized in that: The outer wall of the connecting ring (4) is provided with a second sealing ring (42), and one side of the second sealing ring (42) is in close contact with the outer end of another pipe section (2).
8. The concrete pipe section reinforcement device according to claim 1, characterized in that: The connecting seat (51) includes a base plate (511), one end of which is fixed with an end plate (512). The end plate (512) has a through hole, and the connecting rod (52) has external threads at both ends. The two ends of the connecting rod (52) pass through the through holes of the two end plates (512) respectively and are locked by nuts (53).
9. The concrete pipe section reinforcement device according to claim 8, characterized in that: Springs (54) are fitted at both ends of the connecting rod (52). A spring groove (514) is provided on the inner side of the end plate (512). The spring (54) is located in the spring groove (514). One end of the spring (54) abuts against the end plate (512), and the other end abuts against the nut (53). A spring washer (55) is provided between the spring (54) and the end plate (512).
10. The concrete pipe section reinforcement device according to claim 8, characterized in that: The base plate (511) is fixed to the outer wall of one pipe section (1) or another pipe section (2) by a plurality of bolts (513).