Waterproof structure of pipe joint of power jacking pipe

Abstract

The utility model belongs to the technical field of electric power jacking pipe joint waterproof structures, and particularly relates to an electric power jacking pipe joint waterproof structure which comprises a front jacking pipe and a rear jacking pipe, one end of the front jacking pipe is fixedly connected with a connecting ring, and a plurality of connecting ports are evenly distributed in the annular surface of the connecting ring. The connecting structure has the advantages that the first side plate and the second side plate are arranged, so that the connecting efficiency is improved, the construction progress is prevented from being influenced, the slope is arranged, and the connecting structure is convenient to use, simple in structure, convenient to operate and high in practicability. The connecting ring is arranged between the first side plate and the second side plate, so that in the process that the first side plate and the second side plate are unfolded towards the two sides, the connecting ring is more tightly in extrusion contact with the rear jacking pipe, the sealing effect between pipe joints is disturbed and improved, and after connection, concrete is poured into the connecting ring, the structural strength of the pipe joints can be greatly improved, and the service life of the pipe joints is prolonged. And therefore, the problem of sealing failure caused by dislocation at the pipe joints is effectively avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric power pipe jacking joint waterproof structure, in particular to an electric power pipe jacking joint waterproof structure. Background Art

[0002] In recent years, with the acceleration of social modernization, trenchless technology, especially pipe jacking technology, has been rapidly promoted and applied. Pipe jacking technology is widely used in the field of municipal engineering, among which power pipe jacking is used for underground laying of cables, and power pipe jacking is installed in sections, which makes the joints of the power pipe jacking sections more fragile, and the waterproof performance of the pipe joints is required to be high during construction.

[0003] In order to prevent groundwater from invading the pipeline, waterproof measures are usually set up at the joints of the power pipe jacking pipe joints. However, when the soil layer that the power pipe jacking passes through is mainly gravel soil, the commonly used waterproof measures can no longer meet the waterproof requirements, and the power pipe jacking is prone to leakage.

[0004] A Chinese patent with authorization announcement number CN218581622U discloses a waterproof structure for an electric power pipe joint. A front thin-walled rigid tube and a rear thin-walled rigid tube are provided as the first waterproof structure. Reinforcing ribs are provided to provide stable support for the front and rear pipes. A waterproof rubber ring and a water-swellable waterstop strip are used as the second waterproof structure. A sealing component is used to further increase the waterproof effect of the connection structure between the front and rear pipes, which is beneficial to improving the waterproof performance between the front and rear pipes. A sleeve ring is provided to limit the displacement of the front and rear pipes, reduce the misalignment of the front and rear pipes under the action of external forces, and is beneficial to maintaining a stable connection between the front and rear pipes.

[0005] However, the above patent has the following disadvantages:

[0006] The above patent is not convenient for workers to operate the connection during the actual construction process, which will affect the connection efficiency and further affect the construction progress.

[0007] The connection firmness between the pipe sections of the power jacking pipe in the above-mentioned patent is relatively poor, and it is difficult to effectively improve the structural strength of the connection between the pipe sections to avoid the problem of water leakage at the pipe sections due to misalignment of the front and rear jacking pipes. Utility Model Content

[0008] In order to overcome the deficiencies of the prior art, the technical problem to be solved by the present utility model is that by providing a first side plate and a second side plate, after the front jacking pipe and the rear jacking pipe are preliminarily connected, workers can use tools to screw the two-way bolt, so that the first side plate and the second side plate can be unfolded to both sides to clamp the connecting ring, realizing a quick and convenient connection, improving the connection efficiency and avoiding affecting the construction progress. By providing a slope, during the process of the first side plate and the second side plate unfolding to both sides, the connecting ring can be more closely squeezed and contacted with the rear jacking pipe, thereby improving the sealing effect between pipe joints. And after connection, by pouring concrete into the connecting ring, the structural strength at the pipe joint can be greatly improved, and further effectively avoiding the problem of sealing failure caused by dislocation at the pipe joint.

[0009] In order to achieve the above object, the present utility model provides the following technical solution: A waterproof structure for a power jacking pipe joint, including a front jacking pipe and a rear jacking pipe. One end of the front jacking pipe is fixedly connected with a connecting ring, and a plurality of connecting ports are evenly distributed on the circumferential surface of the connecting ring. At each position corresponding to the connecting port near the connecting ring of the rear jacking pipe, a convex platform is provided, and each convex platform is provided with a connecting component capable of penetrating into the corresponding connecting port.

[0010] The connecting component includes a connecting seat. Each convex platform is fixedly connected with a connecting seat. Two groups of first side plates are respectively rotatably connected at both ends of each connecting seat. One end of each first side plate away from the connecting seat is rotatably connected with a second side plate. A slider is movably connected between the ends of every two adjacent second side plates. A two-way bolt with opposite pitch at both ends is rotatably connected in each connecting seat, and each two-way bolt is threadedly connected with the corresponding two sliders.

[0011] A through hole is provided at each position corresponding to the two-way bolt on the outer side of the connecting ring, and a rubber plug is connected in each through hole.

[0012] A group of symmetric slopes are provided on both sides of each connecting port on the inner side of the circumferential part of the connecting ring.

[0013] A sealing gasket is provided between the contact surface of the connecting ring and the rear jacking pipe, and the sealing gasket is made of a water-swelling material.

[0014] To sum up, compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] After preliminary connection, workers can use tools to screw the two-way bolt, so that the first side plate and the second side plate can be unfolded to both sides to clamp the connecting ring, realizing a quick, convenient and firm connection, improving the connection efficiency and avoiding affecting the construction progress.

[0016] By setting a slope, during the process of the first side plate and the second side plate expanding to both sides, the connecting ring is made to be in closer extrusion contact with the rear jacking pipe, thereby disturbing and improving the sealing effect between the pipe sections.

[0017] After connection, by pouring concrete into the connecting ring, the structural strength at the pipe section can be greatly improved, and further, the problem of sealing failure caused by dislocation at the pipe section can be effectively avoided. Brief Description of the Drawings

[0018] Figure 1 Schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 Top view of the overall structure of the present utility model;

[0020] Figure 3 Schematic sectional structure diagram at A - A of the present utility model;

[0021] Figure 4 Exploded sectional view of some parts of the present utility model;

[0022] Figure 5 Enlarged structural diagram of B of the present utility model;

[0023] Figure 6 Schematic diagram of some parts of the present utility model;

[0024] Figure 7 Enlarged structural diagram of C of the present utility model; Detailed Description of the Preferred Embodiment

[0025] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0026] Reference Figures 1-7, A waterproof structure for a power jacking pipe joint, including a front jacking pipe 10 and a rear jacking pipe 11. A plurality of bosses 18 are evenly distributed at one end of the rear jacking pipe 11. A connecting seat 19 is fixedly connected inside each boss 18. Two groups of first side plates 20 are respectively rotatably connected at both ends of each connecting seat 19. One end of each first side plate 20 away from the connecting seat 19 is rotatably connected to a second side plate 21. A slider 22 is movably connected between the ends of every two adjacent second side plates 21. A two-way bolt 23 is rotatably connected at a position corresponding to the slider 22 inside each connecting seat 19. The thread pitches of the two ends of each two-way bolt 23 extending out of the connecting seat 19 are equal and the thread directions are opposite. Each two-way bolt 23 is threadedly connected to the corresponding two sliders 22. A connecting ring 12 is fixedly connected to the annular part of the front jacking pipe 10 close to the rear jacking pipe 11. A plurality of connection ports 15 are evenly distributed on the annular surface of the connecting ring 12 at positions corresponding to each boss 18. Each connection port 15 allows the boss 18 to be inserted.

[0027] By screwing the two-way bolt 23, after the first side plate 20 and the second side plate 21 are inserted into the connection port 15, the first side plate 20 and the second side plate 21 can be unfolded to both sides, thus clamping the edges on both sides of the connection port 15, realizing the docking of the front jacking pipe 10 and the rear jacking pipe 11, and the connection method is simple and convenient, and the connection effect is firm and stable.

[0028] Reference Figures 1-2 , Through holes 13 are provided on the outside of the connecting ring 12 at positions corresponding to each two-way bolt 23. A rubber plug 14 is connected inside each through hole 13.

[0029] By providing the through holes 13, it is convenient for workers to screw the two-way bolt 23 after the first side plate 20 and the second side plate 21 are inserted into the connection port 15. And after the fixed connection is completed, concrete can be poured into the empty area inside the connecting ring 12 through the through holes 13, thus realizing a more firm connection effect and completely blocking the gaps at the connection, improving the waterproof effect.

[0030] Reference Figure 7 , A set of symmetric slopes 16 are provided on both sides of each connection port 15 on the inner side of the annular part of the connecting ring 12.

[0031] By providing the slopes 16, when the first side plate 20 and the second side plate 21 are inserted into the connection port 15 and unfolded to both sides, the ends of the first side plate 20 and the second side plate 21 slide on the inclined surfaces of the slopes 16, so that the connecting ring 12 can be more closely attached to the end of the rear jacking pipe 11, further improving the waterproof effect and the firmness of the connection.

[0032] Reference Figure 4 , A sealing gasket 17 is provided between the contact surface of the connecting ring 12 and the rear jacking pipe 11. The sealing gasket 17 is made of a water-swellable material.

[0033] By setting the sealing gasket 17, the waterproof performance between the contact surface of the connecting ring 12 and the rear jacking pipe 11 is improved.

[0034] In this embodiment, before the construction of the electric jacking pipe, each component is first processed and assembled in the prefabrication factory, and after the prefabrication is completed, each component is transported to the construction site.

[0035] When the electric jacking pipe needs to be erected at the construction site, first, the front jacking pipe 10 with the connecting ring 12 is erected at the designated position by construction machinery, and then the rear jacking pipe 11 is hoisted by construction machinery and moved forward towards the front jacking pipe 10.

[0036] Make the positions of the respective bosses 18 correspond to the respective connection ports 15, and stably move the rear jacking pipe 11 closer to the front jacking pipe 10 until each boss 18 and the components on the boss 18 are inserted into the corresponding connection port 15 to complete the preliminary docking.

[0037] Subsequently, the worker holds the pneumatic screwdriver and inserts the pneumatic screwdriver into the through hole 13 in sequence to connect with the double-headed bolt 23, and starts the pneumatic screwdriver to screw the double-headed bolt 23. Since the sliding blocks 22 are threadedly connected to both ends of the double-headed bolt 23, and the thread pitches at both ends of the double-headed bolt 23 are opposite, the two sliding blocks 22 move towards the direction close to the connecting seat 19, so that the first side plate 20 and the second side plate 21 are closed to each other, and the edges of the first side plate 20 and the second side plate 21 will move out of the boundary of the connection port 15 and get stuck, making the front jacking pipe 10 and the rear jacking pipe 11 firmly connected.

[0038] During the process that the first side plate 20 and the second side plate 21 are stuck at the edge of the connection port 15, the ends of the first side plate 20 and the second side plate 21 contact the inclined surface of the slope 16. The more the ends of the first side plate 20 and the second side plate 21 extend outwards, the more the connecting ring 12 is pressed against the rear jacking pipe 11, so that the connecting ring 12 and the rear jacking pipe 11 squeeze the sealing gasket 17 more tightly, thereby improving the sealing and waterproof effect between the connecting ring 12 and the rear jacking pipe 11.

[0039] After all the double-headed bolts 23 are screwed, the worker fills the rubber plugs 14 into the through holes 13, and the two through holes 13 at the top are not filled with rubber plugs 14 first. Then, concrete is poured into the connecting ring 12 through one of the through holes 13 at the top, and the other through hole 13 without the rubber plug 14 serves as an exhaust hole to discharge the excess air. The concrete completely fills all the voids in the connecting ring 12. After the concrete completely solidifies, the firmness between the front jacking pipe 10 and the rear jacking pipe 11 is greatly increased, and various gaps in the connecting ring 12 are blocked, further improving the sealing and waterproof performance.

[0040] As used in the specification and claims, certain terms are used to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not distinguish components by the difference in names, but by the difference in functions of the components. As used throughout the specification and claims, "comprising" is an open-ended term and should be interpreted as "comprising but not limited to". "Substantially" means within an acceptable error range. Those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

[0041] It should be noted that the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a good or system including a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such good or system. Without further limitation, an element defined by the statement "including a..." does not exclude the presence of additional identical elements in the good or system including the said element.

[0042] The above description shows and describes several preferred embodiments of the present application. However, as mentioned above, it should be understood that the present application is not limited to the forms disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the application concept described herein through the above teachings or the technology or knowledge in the relevant field. And any changes and variations made by those skilled in the art without departing from the spirit and scope of the present application shall fall within the protection scope of the appended claims of the present application.

Claims

1. A waterproof structure for a power pipe joint, characterized in that: The invention comprises a front top tube (10) and a rear top tube (11), wherein one end of the front top tube (10) is fixedly connected to a connecting ring (12), a plurality of connecting ports (15) are evenly distributed on the annular surface of the connecting ring (12), and a boss (18) is arranged at a position corresponding to each connecting port (15) at one end of the rear top tube (11) close to the connecting ring (12), and each boss (18) is provided with a connecting component capable of penetrating into the corresponding connecting port (15).

2. The waterproof structure of a power pipe joint according to claim 1, characterized in that: The connecting component comprises a connecting seat (19), each of the bosses (18) is fixedly connected with the connecting seat (19), two ends of each of the connecting seats (19) are rotatably connected with two groups of first side plates (20), one end of each of the first side plates (20) away from the connecting seat (19) is rotatably connected with a second side plate (21), and a slider (22) is movably connected between the ends of each two adjacent second side plates (21).

3. The waterproof structure of a power pipe joint according to claim 2, characterized in that: A bidirectional bolt (23) with opposite thread pitches at both ends is rotatably connected in each connection seat (19), and each bidirectional bolt (23) is threadedly connected to two corresponding sliders (22).

4. The waterproof structure of a power pipe joint according to claim 2, characterized in that: A through hole (13) is provided on the outside of the connection ring (12) at a position corresponding to each bidirectional bolt (23), and a rubber plug (14) is connected to each through hole (13).

5. The waterproof structure of a power pipe joint according to claim 1, characterized in that: A group of mutually symmetrical slopes (16) are arranged on the inner side of the annular portion of the connecting ring (12) at both sides of each connecting port (15).

6. The waterproof structure of a power pipe joint according to claim 1, characterized in that: A sealing gasket (17) is provided between the contact surface between the connecting ring (12) and the rear top tube (11), and the sealing gasket (17) is made of a water-swellable material.

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