Assembly type underground passage pipe joint dry type connecting structure

Abstract

The utility model relates to the technical field of pipe joints, and particularly discloses a fabricated underground passage pipe joint dry-type connecting structure which comprises an upper pipe jacking block and a lower pipe jacking block, an opening of the upper pipe jacking block and an opening of the lower pipe jacking block are close to each other, and a flexible sealing gasket is arranged on the side, close to the upper pipe jacking block, of the lower pipe jacking block. The two flexible sealing gaskets are arranged on the two sides, opposite to the lower pipe jacking block, of the lower pipe jacking block, and a fixing assembly used for driving the upper pipe jacking block to press the lower pipe jacking block is arranged between the upper pipe jacking block and the lower pipe jacking block. After the upper pipe jacking block is controlled to be spliced to the lower pipe jacking block, the fixing assembly is controlled to press the upper pipe jacking block to the lower pipe jacking block, so that the flexible sealing gasket can be compressed and deformed, and the gap between the upper pipe jacking block and the lower pipe jacking block can be filled with the flexible sealing gasket. The problem that the sealing performance is poor is solved.

Description

Technical Field

[0001] The present application relates to the technical field of pipe joints, and in particular to an assembled underground passage pipe joint dry connection structure. Background Art

[0002] In the construction of underground projects, it is often necessary to bury underground passages. The large-section jacking pipe segments are huge in size and difficult to transport under difficult road conditions in the city center, so prefabricated underground passage connection structures are often built.

[0003] A common prefabricated underground passage connection structure includes an upper top pipe block and a lower top pipe block. The openings of the upper top pipe block and the lower top pipe block are close to each other. After the upper top pipe block and the lower top pipe block are spliced ​​on opposite sides, the upper top pipe block and the lower top pipe block are fixed by means of bent bolts or oblique bolts.

[0004] Regarding the above-mentioned related technologies, after the upper top pipe block and the lower top pipe block are fixed, water is easy to flow out from the gap between the upper top pipe block and the lower top pipe block, and the sealing performance is poor. Utility Model Content

[0005] In order to improve the problem of poor sealing, the present application provides an assembled underground passage pipe section dry connection structure.

[0006] The present application provides an assembled underground passage pipe section dry connection structure adopting the following technical solution:

[0007] A prefabricated underground passage pipe section dry connection structure comprises an upper top pipe block and a lower top pipe block, the openings of the upper top pipe block and the lower top pipe block are close to each other, a flexible sealing pad is arranged on the side of the lower top pipe block close to the upper top pipe block, two flexible sealing pads are arranged on both sides of the lower top pipe block, a fixing component for driving the upper top pipe block to press against the lower top pipe block is arranged between the upper top pipe block and the lower top pipe block, a first hole is arranged on the upper top pipe block, and a second hole is arranged on the lower top pipe block corresponding to the first hole, the fixing component comprises a prestressed steel rod and a nut, a limited seat is fixedly arranged at one end of the prestressed steel rod, and a thread is arranged at the other end, the prestressed steel rod passes through the first hole and the second hole, and the prestressed steel rod is connected to the nut.

[0008] By adopting the above technical solution, after the upper top pipe block is spliced ​​onto the lower top pipe block, the fixing assembly is controlled to press the upper top pipe block toward the lower top pipe block, so that the flexible sealing pad can be compressed and deformed, and the flexible sealing pad can fill the gap between the upper top pipe block and the lower top pipe block, which is conducive to reducing the outflow of water from between the upper top pipe block and the lower top pipe block, and improves the problem of poor sealing. The operator tightens the nut, and the limit seat cooperates with the nut, which can apply a prestress to the upper top pipe block and the lower top pipe block to approach each other, thereby ensuring the stability between the upper top pipe block and the lower top pipe block.

[0009] Optionally, a limiting groove is provided on the upper top pipe block, the limiting groove is communicated with the first hole, and the limiting seat is located in the limiting groove.

[0010] By adopting the above technical solution, the exposure of the limiting seat is reduced by means of the limiting groove, and the limiting seat can be protected.

[0011] Optionally, the limiting seat is a polygon, and the limiting seat is adapted to the limiting groove.

[0012] By adopting the above technical solution, when the operator tightens the nut, the limit seat cooperates with the limit groove, which can reduce the rotation of the prestressed steel rod and facilitate the operator to tighten the nut.

[0013] Optionally, a positioning block is provided on a side of the lower top pipe block close to the upper top pipe block, and a positioning groove is provided on a side of the upper top pipe block close to the lower top pipe block, and the positioning block is matched with the positioning groove.

[0014] By adopting the above technical solution, the positioning block cooperates with the positioning groove to position the splicing of the upper top pipe block and the lower top pipe block, which is beneficial to reduce the relative slip between the upper top pipe block and the lower top pipe block.

[0015] Optionally, the size of the positioning block gradually decreases from the lower top pipe block toward the upper top pipe block.

[0016] By adopting the above technical solution, it is possible to facilitate the insertion of the positioning block into the positioning groove, thereby improving the convenience of positioning.

[0017] Optionally, the flexible sealing pad is located on a side of the positioning block close to the upper top pipe block, and the flexible sealing pad is a rubber pad.

[0018] By adopting the above technical solution, the flexible sealing pad can be effectively protected, the shedding of the flexible sealing pad is reduced, the rubber pad is easy to obtain, the rubber pad has good elasticity and the cost is relatively low.

[0019] In summary, the present application includes at least one of the following beneficial technical effects:

[0020] 1. After the upper jacking pipe block is spliced ​​onto the lower jacking pipe block, the fixing assembly is controlled to press the upper jacking pipe block toward the lower jacking pipe block, so that the flexible sealing gasket can be compressed and deformed. The flexible sealing gasket can fill the gap between the upper jacking pipe block and the lower jacking pipe block, which is beneficial to reduce the outflow of water from between the upper jacking pipe block and the lower jacking pipe block, and improve the problem of poor sealing performance;

[0021] 2. The operator tightens the nut, and the limit seat cooperates with the nut to apply prestressing force to the upper and lower jacking blocks, thereby ensuring the stability between the upper and lower jacking blocks;

[0022] 3. When the operator tightens the nut, the limit seat cooperates with the limit groove to reduce the rotation of the prestressed steel rod, making it easier for the operator to tighten the nut. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0025] Figure 2 This is a schematic diagram showing the local structure of an embodiment of the present application;

[0026] Figure 3 It is a schematic diagram of the partial structure without showing the position of the rubber block.

[0027] Figure numerals: 1. upper top pipe block; 11. positioning groove; 12. first hole; 13. limiting groove; 2. lower top pipe block; 21. positioning block; 22. second hole; 3. flexible sealing pad; 4. fixing assembly; 41. prestressed steel rod; 411. limiting seat; 42. nut; 5. rubber block. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-3 This application is described in further detail.

[0029] The present application embodiment discloses a prefabricated underground passage pipe segment dry connection structure. Figure 1 and Figure 2The assembled underground passage pipe section dry connection structure includes an upper top pipe block 1 and a lower top pipe block 2. The openings of the upper top pipe block 1 and the lower top pipe block 2 are close to each other. A flexible sealing pad 3 is provided on the side of the lower top pipe block 2 close to the upper top pipe block 1. Two flexible sealing pads 3 are provided on both sides of the lower top pipe block 2. A fixing component 4 for driving the upper top pipe block 1 to press the lower top pipe block 2 is provided between the upper top pipe block 1 and the lower top pipe block 2. After the upper top pipe block 1 is controlled to be spliced ​​onto the lower top pipe block 2, the fixing component 4 is controlled to press the upper top pipe block 1 to the lower top pipe block 2, so that the flexible sealing pad 3 can be compressed and deformed. The flexible sealing pad 3 can fill the gap between the upper top pipe block 1 and the lower top pipe block 2, which is conducive to reducing the outflow of water from between the upper top pipe block 1 and the lower top pipe block 2, and improving the problem of poor sealing.

[0030] In order to facilitate the lifting of the upper top pipe block 1, a lifting ring is integrally cast on the upper side of the upper top pipe block 1. A plurality of lifting rings are arranged along the length direction of the upper top pipe block 1. With the help of the lifting rings, the operator can easily lift the upper top pipe block 1.

[0031] Reference Figure 1 and Figure 2 A positioning block 21 is provided on the side of the lower top pipe block 2 close to the upper top pipe block 1, and the length direction of the positioning block 21 is consistent with the length direction of the upper top pipe block 1. A positioning groove 11 is provided on the side of the upper top pipe block 1 close to the lower top pipe block 2, and the positioning block 21 is adapted to the positioning groove 11. The positioning block 21 cooperates with the positioning groove 11 to position the splicing of the upper top pipe block 1 and the lower top pipe block 2, which is conducive to reducing the relative slip between the upper top pipe block 1 and the lower top pipe block 2.

[0032] The size of the positioning block 21 gradually decreases from the lower top pipe block 2 toward the upper top pipe block 1. Furthermore, the cross section of the positioning block 21 is inverted trapezoidal. When the upper top pipe block 1 is hoisted, the positioning block 21 can be conveniently inserted into the positioning groove 11, thereby improving the convenience of positioning.

[0033] The flexible sealing pad 3 is a rubber pad, which is easy to obtain and has good elasticity, thus reducing the construction cost and having good sealing performance. The flexible sealing pad 3 is located on the side of the positioning block 21 close to the upper top pipe block 1, and the positioning groove 11 can effectively protect the flexible sealing pad 3 and reduce the falling off of the flexible sealing pad 3.

[0034] Reference Figure 1 and Figure 2, the upper top pipe block 1 and the lower top pipe block 2 are both semicircular tubes, and the upper top pipe block 1 is located on the upper side of the upper top pipe block 1. The upper top pipe block 1 is provided with a first hole 12, and the upper top pipe block 1 is provided with a first hole 12 on both sides, and the lower top pipe block 2 is provided with a second hole 22 corresponding to the first hole 12. The fixing assembly 4 includes a prestressed steel rod 41 and a nut 42. A limit seat 411 is fixedly provided at one end of the prestressed steel rod 41, and a thread is provided at the other end. The prestressed steel rod 41 passes through the first hole 12 and the second hole 22, and the prestressed steel rod 41 is connected to the nut 42. The operator tightens the nut 42, and the limit seat 411 cooperates with the nut 42, which can apply a prestressed force that is close to each other between the upper top pipe block 1 and the lower top pipe block 2, thereby ensuring the stability between the upper top pipe block 1 and the lower top pipe block 2.

[0035] Multiple nuts 42 are arranged on the prestressed steel rod 41. The cooperation of multiple nuts 42 can reduce the slippage of the nuts 42 on the prestressed steel rod 41, thereby ensuring the stability of the connection between the upper top pipe block 1 and the lower top pipe block 2. In the embodiment of the present application, two nuts 42 are arranged.

[0036] Reference Figure 1 and Figure 3 In order to protect the limiting seat 411, a limiting groove 13 is opened on the upper side of the upper top pipe block 1, and the limiting seat 411 is located in the limiting groove 13. The limiting groove 13 reduces the exposure of the limiting seat 411, so that the limiting seat 411 can be protected.

[0037] The limit seat 411 is polygonal, and further, the limit seat 411 is rectangular, and the limit seat 411 is adapted to the limit groove 13. When the operator tightens the nut 42, the limit seat 411 cooperates with the limit groove 13 to reduce the rotation of the prestressed steel rod 41, making it easier for the operator to tighten the nut 42.

[0038] The limiting groove 13 is filled with a rubber block 5, which is located on the upper side of the limiting seat 411. With the help of the limiting block, the limiting seat 411 can be protected and water can be reduced from entering the limiting groove 13, which is beneficial to reducing water corrosion on the prestressed steel rod 41.

[0039] The implementation principle of the assembled underground passage pipe segment dry connection structure in the embodiment of the present application is: after controlling the upper top pipe block 1 to be spliced ​​onto the lower top pipe block 2, the fixing assembly 4 is controlled to press the upper top pipe block 1 toward the lower top pipe block 2, so that the flexible sealing gasket 3 can be compressed and deformed. The flexible sealing gasket 3 can fill the gap between the upper top pipe block 1 and the lower top pipe block 2, which is beneficial to reduce the outflow of water from between the upper top pipe block 1 and the lower top pipe block 2, and improves the problem of poor sealing.

[0040] Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The words "first", "second", "third" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "One" or "one" and similar words do not indicate a quantitative limit, but indicate that there is at least one. "Include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0041] The above are all optional embodiments of the present application, and are not intended to limit the protection scope 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 protection scope of the present application.

Claims

1. An assembled underground passage pipe segment dry connection structure, comprising an upper top pipe block (1) and a lower top pipe block (2), wherein the openings of the upper top pipe block (1) and the lower top pipe block (2) are close to each other, and characterized in that: A flexible sealing pad (3) is provided on one side of the lower top pipe block (2) close to the upper top pipe block (1), and two flexible sealing pads (3) are provided on both sides of the lower top pipe block (2). A fixing component (4) for driving the upper top pipe block (1) to press against the lower top pipe block (2) is provided between the upper top pipe block (1) and the lower top pipe block (2). A first hole (12) is provided on the upper top pipe block (1), and a second hole (22) is provided on the lower top pipe block (2) corresponding to the first hole (12). The fixing component (4) comprises a prestressed steel rod (41) and a nut (42). A limited position seat (411) is fixedly provided at one end of the prestressed steel rod (41), and a thread is provided at the other end. The prestressed steel rod (41) passes through the first hole (12) and the second hole (22), and the prestressed steel rod (41) is connected to the nut (42).

2. The assembled underground passage pipe section dry connection structure according to claim 1 is characterized in that: The upper top pipe block (1) is provided with a limiting groove (13), the limiting groove (13) is communicated with the first hole (12), and the limiting seat (411) is located in the limiting groove (13).

3. The assembled underground passage pipe section dry connection structure according to claim 2 is characterized in that: The limiting seat (411) is polygonal, and the limiting seat (411) is compatible with the limiting groove (13).

4. The assembled underground passage pipe section dry connection structure according to claim 1, characterized in that: A positioning block (21) is provided on one side of the lower top pipe block (2) close to the upper top pipe block (1), and a positioning groove (11) is provided on one side of the upper top pipe block (1) close to the lower top pipe block (2), and the positioning block (21) is adapted to fit the positioning groove (11).

5. The assembled underground passage pipe section dry connection structure according to claim 4 is characterized in that: The size of the positioning block (21) gradually decreases in a direction from the lower top pipe block (2) toward the upper top pipe block (1).

6. The assembled underground passage pipe section dry connection structure according to claim 5, characterized in that: The flexible sealing pad (3) is located on a side of the positioning block (21) close to the upper top pipe block (1), and the flexible sealing pad (3) is a rubber pad.

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