A pipe jacking connection structure crossing a railway

Abstract

The present application relates to a pipe jacking connection structure for crossing a railway, belonging to the technical field of pipeline construction, which includes a pipe jacking and a sealing pipe, wherein a plug ring is fixed to one end of the pipe jacking near the sealing pipe, and a first slot for the plug ring to be inserted is provided at both ends of the sealing pipe; a first accommodating chamber is provided inside the sealing pipe, a first spring is located below a support block, a limit block is fixed on the top of the support block, and the limit block can pass through the jack and be inserted into the limit slot; a second accommodating chamber is located on the side of the first accommodating chamber away from the pipe jacking, a connecting block is fixed to one end of the abutment block near the first slot, one end of the connecting block extends out of the second accommodating chamber and is located in the first slot, and the bottom of the abutment block contacts the top of the support block; when the plug ring is inserted into the first slot, the plug ring pushes the connecting block and the abutment block to move toward the inside of the second accommodating chamber, the abutment block is separated from the support block, and the limit block moves upward and is inserted into the limit slot. The present application has the effect of increasing the connection strength between pipe jacking and pipe jacking.

Description

Technical Field

[0001] The present application relates to the technical field of pipeline construction, and in particular to a pipe jacking connection structure for crossing a railway. Background Art

[0002] When underground pipelines cross obstacles such as railways, roads, rivers, or buildings, a method of tunneling is often employed. During construction, a hydraulic jack supported on the rear seat of the foundation pit presses the pipe into the soil using a force-transmitting jacking iron and guide rails. The soil in front of the pipe is simultaneously removed and transported away. Once the first section of pipe is fully inserted into the soil, the second section is connected and continues to be pushed in, one section at a time.

[0003] The jack continuously pushes the jacking pipe into the installation position, and the jacking pipe abuts against the jacking pipe in the soil layer. The joint between the jacking pipes is unstable and prone to breakage, so a new jacking pipe needs to be laid again, which reduces the laying work efficiency. Summary of the Invention

[0004] In order to increase the connection strength between jacking pipes, the present application provides a jacking pipe connection structure for crossing a railway.

[0005] The present application provides a pipe jacking connection structure for crossing a railway, which adopts the following technical solutions:

[0006] A jacking pipe connection structure for crossing a railway comprises a jacking pipe and a sealing pipe. Two adjacent jacking pipes are connected by the sealing pipe. An insert ring is fixed to one end of the jacking pipe close to the sealing pipe. Both ends of the sealing pipe are provided with a first slot for inserting the insert ring.

[0007] A first accommodating cavity is defined within the sealing tube, a support block and a first spring are disposed within the first accommodating cavity, the first spring being located below the support block and being fixed between the support block and the bottom wall of the first accommodating cavity, a limit block being fixed on the top of the support block, an insertion hole being defined on the groove wall of the first slot, a limit groove being defined on the inserting ring for inserting the limit block, and the limit block being able to pass through the insertion hole and be inserted into the limit groove;

[0008] A second accommodating cavity is defined inside the sealing tube, and the second accommodating cavity is located on a side of the first accommodating cavity away from the top pipe. An abutment block is provided in the second accommodating cavity, and a connecting block is fixed to one end of the abutment block close to the first slot. One end of the connecting block extends out of the second accommodating cavity and is located in the first slot, and the bottom of the abutment block contacts the top of the support block.

[0009] When the insert ring is inserted into the first slot, the insert ring pushes the connecting block and the abutting block to move toward the inside of the second accommodating cavity, the abutting block disengages from the supporting block, and the limiting block moves upward and is inserted into the limiting groove.

[0010] By adopting the above technical solution, when the hydraulic jack pushes the jacking pipe in, the insert ring on the jacking pipe is inserted into the first slot. During the process of inserting the insert ring into the first slot, the end of the insert ring away from the jacking pipe abuts against the connecting block in the first slot, pushing the connecting block toward the inside of the second accommodating cavity. The connecting block pushes the abutting block to move toward the second accommodating cavity away from the first slot. The insert ring on the jacking pipe completely enters the first slot, and the bottom of the abutting block just falls off the supporting block. Then the supporting block moves upward under the action of the first spring, and the limiting block moves upward with the supporting block. Finally, the limiting block passes through the insertion hole and is inserted into the limiting groove on the insert ring, thereby limiting the insert ring, reducing the possibility of the insert ring escaping from the first slot, increasing the stability between the insert ring and the sealing tube, thereby increasing the stability between the jacking pipe and the sealing tube, and the setting of the sealing tube increases the connection strength between the jacking pipe and the jacking pipe.

[0011] Optionally, the limiting groove is arranged around the insert ring.

[0012] By adopting the above technical solution, after the insert ring is inserted into the first slot, the limit block is inserted into the limit groove. Since the limit groove is arranged in a circle on the insert ring, the limit block can be inserted into the limit groove without rotating the insert ring when the insert ring is inserted into the first slot, which makes installation more convenient.

[0013] Optionally, the abutment block includes a first abutment block and a second abutment block, the bottom of the first abutment block is provided with a receiving hole, one end of the second abutment block is inserted into the receiving hole, a second spring is provided in the receiving hole, the second spring is fixed between the second abutment block and the hole wall of the receiving hole away from the second abutment block, and the bottom of the second abutment block is in contact with the support block.

[0014] By adopting the above technical solution, when the insert ring is completely inserted into the first slot, the second abutment block falls off the support block, and under the action of the second spring, the bottom of the second abutment block contacts the bottom of the first accommodating cavity, thereby making the top of the first abutment block contact the top of the second accommodating cavity, and the bottom of the second abutment block contacts the bottom of the first accommodating cavity, thereby supporting the first accommodating cavity and the second accommodating cavity and increasing the stability of the sealing ring.

[0015] Optionally, the top of the limit block is arc-shaped.

[0016] By adopting the above technical solution, the top of the limiting block is in an arc shape, and when the first spring pushes the supporting block and the limiting block to move upward, it is convenient for the limiting block to be inserted into the limiting groove.

[0017] Optionally, a ball is installed at a position where the support block contacts the second abutting block, and the ball contacts the second abutting block.

[0018] By adopting the above technical solution, when the insert ring is inserted into the first slot, the second abutment block gradually falls off the support block. Since the support block is equipped with ball bearings, the ball bearings reduce the friction between the second abutment block and the support block, thereby facilitating the second abutment block to fall off from the support block.

[0019] Optionally, a first support ring is fixed on the inner wall of the sealing tube on a side close to the top tube, and a second support ring is fixed on the inner wall of the top tube on a side close to the sealing tube.

[0020] By adopting the above technical solution, the first support ring and the sealing tube support each other, thereby increasing the strength of the first support ring, and the second support ring supports the jacking pipe, thereby increasing the strength of the jacking pipe.

[0021] Optionally, a reinforcement ring is fixed to one end of the first support ring close to the second support ring, and a second slot for inserting the reinforcement ring is provided on the second support ring.

[0022] By adopting the above technical solution, when the insert ring is inserted into the first slot and the reinforcement ring is inserted into the second slot, the connection strength between the first support ring and the second support ring is increased.

[0023] Optionally, a locking bolt is provided on the second support ring, and the reinforcement ring and the second support ring are fixed by the locking bolt.

[0024] By adopting the above technical solution, the reinforcement ring and the second support ring are fixed by locking bolts, thereby reducing the possibility of the reinforcement ring escaping from the second slot, thereby increasing the stability of the connection between the top pipe and the connecting pipe.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. When the hydraulic jack pushes the jacking pipe in, the insert ring on the jacking pipe is inserted into the first slot. During the process of inserting the insert ring into the first slot, the end of the insert ring away from the jacking pipe abuts against the connecting block in the first slot, pushing the connecting block toward the inside of the second accommodating cavity. The connecting block pushes the abutting block to move toward the second accommodating cavity away from the first slot. The insert ring on the jacking pipe completely enters the first slot, and the bottom of the abutting block just falls off the supporting block. Then the supporting block moves upward under the action of the first spring, and the limiting block moves upward with the supporting block. Finally, the limiting block passes through the insertion hole and is inserted into the limiting groove on the insert ring, thereby limiting the insert ring, reducing the possibility of the insert ring coming out of the first slot, increasing the stability between the insert ring and the sealing tube, thereby increasing the stability between the jacking pipe and the sealing tube, and the provision of the sealing tube increases the connection strength between the jacking pipe and the jacking pipe;

[0027] 2. When the insert ring is inserted into the first slot, the second abutment block gradually falls off the support block. Since the support block is equipped with a ball bearing, the ball bearing reduces the friction between the second abutment block and the support block, thereby facilitating the second abutment block to fall off the support block.

[0028] 3. The reinforcement ring and the second support ring are fixed by locking bolts, thereby reducing the possibility of the reinforcement ring coming out of the second slot, thereby increasing the stability of the connection between the top pipe and the connecting pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of this application.

[0030] Figure 2 It is an exploded schematic diagram of the jacking pipe and the connecting pipe in this application.

[0031] Figure 3 It is a schematic diagram embodying the first accommodating cavity and the second accommodating cavity in this application.

[0032] Figure 4 It is a schematic diagram showing the insertion of the insert ring into the first slot in this application.

[0033] Figure 5 It is a schematic diagram showing that the insert ring in this application is located outside the first slot.

[0034] Explanation of the accompanying drawings: 1. Top pipe; 11. Insert ring; 111. Limiting groove; 2. Sealing tube; 21. First slot; 22. First accommodating chamber; 221. Support block; 222. First spring; 223. Limiting block; 224. Insert hole; 23. Second accommodating chamber; 24. Connecting hole; 25. Ball; 3. Abutment block; 31. First abutment block; 311. Accommodating hole; 312. Second spring; 32. Second abutment block; 33. Connecting block; 4. First support ring; 41. Reinforcement ring; 42. Locking bolt; 5. Second support ring; 51. Second slot. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1 -Attached Figure 5 This application is described in further detail.

[0036] The embodiment of the present application discloses a pipe jacking connection structure for crossing a railway. Figure 1 、 Figure 2 and Figure 3 The jacking pipe connection structure crossing the railway includes a jacking pipe 1, a sealing pipe 2 is connected between two adjacent jacking pipes 1, a first slot 21 is opened at both ends of the sealing pipe 2, and an insert ring 11 is fixed at both ends of the jacking pipe 1, and the insert ring 11 is plugged into the first slot 21.

[0037] A first accommodating chamber 22 is provided inside the sealing tube 2, and the first accommodating chamber 22 is located below the first slot 21. A second accommodating chamber 23 is provided inside the sealing tube 2, and the second accommodating chamber 23 is located on the side of the first slot 21 away from the top pipe 1. The first accommodating chamber 22 is connected to the second accommodating chamber 23.

[0038] Reference Figure 3 、 Figure 4 ,and Figure 5 A support block 221 is disposed in the first accommodating cavity 22. Two first springs 222 are fixed to the bottom of the support block 221. The ends of the first springs 222, away from the support block 221, are fixed to the bottom of the first accommodating cavity 22. A limit block 223 is fixed to the top of the support block 221. A hole 224 is defined in the wall of the first slot 21, through which the limit block 223 can extend. A limit groove 111 is defined in the insert ring 11, into which the limit block 223 can be inserted.

[0039] An abutment block 3 is provided in the second accommodating cavity 23, and the abutment block 3 includes a first abutment block 31 and a second abutment block 32. The first abutment block 31 is located above the second abutment block 32, and an accommodating hole 311 is provided at one end of the first abutment block 31 close to the second abutment block 32. The end of the second abutment block 32 close to the first abutment block 31 is inserted into the accommodating hole 311, and a second spring 312 is provided in the accommodating hole 311. One end of the second spring 312 is fixed to the end of the second abutment block 32 close to the first abutment block 31, and the other end of the second spring 312 is fixed to the hole wall of the accommodating hole 311 away from the second abutment block 32.

[0040] A connecting block 33 is fixed to the end of the first abutting block 31 close to the jacking pipe 1. A connecting hole 24 is defined in the wall of the first slot 21 away from the insert ring 11. The end of the connecting block 33 away from the abutting block 3 passes through the connecting hole 24 and is located in the first slot 21. The bottom of the second abutting block 32 abuts the top of the support block 221.

[0041] When the hydraulic jack is used to push the jacking pipe 1, the insert ring 11 of the jacking pipe 1 is inserted into the first slot 21 of the sealing tube 2. When the insert ring 11 is inserted into the first slot 21, the insert ring 11 pushes the connecting block 33 inward, thereby moving the connecting block 33 toward the second accommodating chamber 23. When the connecting block 33 completely enters the second accommodating chamber 23, the second abutting block 32 is disengaged from the supporting block 221. The supporting block 221 moves upward under the action of the first spring 222, and the limiting block 223 passes through the insertion hole 224 and is inserted into the limiting groove 111. The top of the limiting block 223 is arc-shaped, so that the limiting block 223 is conveniently inserted into the limiting groove 111.

[0042] After the second abutment block 32 is disengaged from the top of the support block 221, the second abutment block 32 moves downward under the action of the second spring 312, and the bottom of the second abutment block 32 abuts against the bottom wall of the first accommodating cavity 22, thereby supporting the first accommodating cavity 22 and the second accommodating cavity 23, thereby increasing the stability of the sealing tube 2.

[0043] The limiting groove 111 is arranged around the insert ring 11. When the limiting block 223 is placed at any position along the circumference of the top pipe 1, the limiting block 223 can be inserted into the limiting groove 111, facilitating the insertion of the limiting block 223 into the limiting groove 111. A plurality of balls 25 are mounted on the top of the support block 221 where it contacts the second abutment block 32. The top of the support block 221 contacts the balls 25. The provision of the balls 25 facilitates the second abutment block 32 to slide off the top of the support block 221.

[0044] A first support ring 4 is fixed to the inner wall of the sealing tube 2 near the top tube 1. A second support ring 5 is fixed to the inner wall of the top tube 1 near the sealing tube 2. A reinforcement ring 41 is fixed to one end of the first support ring 4 near the second support ring 5. The second support ring 5 is provided with a second slot 51 for the reinforcement ring 41 to be inserted into.

[0045] The second support ring 5 is provided with a locking bolt 42 , and the second support ring 5 and the reinforcement ring 41 are fixed by the locking bolt 42 , thereby further fixing the sealing tube 2 and the jacking tube 1 and increasing the stability of the connection between the sealing tube 2 and the jacking tube 1 .

[0046] The implementation principle of a jacking pipe connection structure for crossing a railway in an embodiment of the present application is as follows: when a hydraulic jack is used to push a jacking pipe 1, two adjacent jacking pipes 1 are connected by a sealing pipe 2. When the insert ring 11 on the jacking pipe 1 is inserted into the first slot 21, the insert ring 11 pushes the connecting block 33 to move into the second accommodating cavity 23.

[0047] When the insert ring 11 completely enters the second accommodating chamber 23, the second abutting block 32 disengages from the top of the support block 221. Since the ball 25 is provided on the top of the support block 221, it is easy for the abutting block 3 to disengage from the support block 221. After that, the support block 221 moves upward under the action of the first spring 222, and the limiting block 223 is inserted into the limiting groove 111 through the insertion hole 224, thereby limiting the position of the jacking tube 1 and the sealing tube 2, making it difficult for the jacking tube 1 to disengage from the sealing tube 2. After the second abutting block 32 disengages from the support block 221, the second abutting block 32 abuts against the bottom wall of the first accommodating chamber 22 under the action of the second spring 312.

[0048] 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 pipe jacking connection structure for crossing a railway, characterized by: It comprises a top pipe (1) and a sealing pipe (2), wherein two adjacent top pipes (1) are connected via the sealing pipe (2), an insert ring (11) is fixed to one end of the top pipe (1) close to the sealing pipe (2), and both ends of the sealing pipe (2) are provided with a first slot (21) for inserting the insert ring (11); A first accommodating cavity (22) is provided inside the sealing tube (2), a support block (221) and a first spring (222) are provided inside the first accommodating cavity (22), the first spring (222) is located below the support block (221), the first spring (222) is fixed between the support block (221) and the bottom wall of the first accommodating cavity (22), a limiting block (223) is fixed on the top of the support block (221), a socket (224) is provided on the wall of the first slot (21), a limiting groove (111) for the limiting block (223) to be inserted is provided on the insert ring (11), and the limiting block (223) can pass through the socket (224) and be inserted into the limiting groove (111); A second accommodating cavity (23) is provided inside the sealing tube (2), and the second accommodating cavity (23) is located on a side of the first accommodating cavity (22) away from the top tube (1). An abutting block (3) is provided in the second accommodating cavity (23), and a connecting block (33) is fixed to one end of the abutting block (3) close to the first slot (21). One end of the connecting block (33) extends out of the second accommodating cavity (23) and is located in the first slot (21), and the bottom of the abutting block (3) contacts the top of the supporting block (221); When the insert ring (11) is inserted into the first slot (21), the insert ring (11) pushes the connecting block (33) and the abutting block (3) to move toward the inside of the second accommodating cavity (23), the abutting block (3) is disengaged from the supporting block (221), and the limiting block (223) moves upward and is inserted into the limiting slot (111).

2. The pipe jacking connection structure for crossing a railway according to claim 1, characterized in that: The limiting groove (111) is arranged around the inserting ring (11).

3. The pipe jacking connection structure for crossing a railway according to claim 1, characterized in that: The abutment block (3) comprises a first abutment block (31) and a second abutment block (32); a receiving hole (311) is provided at the bottom of the first abutment block (31); one end of the second abutment block (32) is inserted into the receiving hole (311); a second spring (312) is provided in the receiving hole (311); the second spring (312) is fixed between the second abutment block (32) and a hole wall of the receiving hole (311) away from the second abutment block (32); and the bottom of the second abutment block (32) contacts the support block (221).

4. A pipe jacking connection structure for crossing a railway according to any one of claims 1 to 3, characterized in that: The top of the limiting block (223) is arc-shaped.

5. The pipe jacking connection structure for crossing a railway according to claim 3, characterized in that: A ball (25) is installed at the position where the support block (221) contacts the second abutting block (32), and the ball (25) contacts the second abutting block (32).

6. The pipe jacking connection structure for crossing a railway according to claim 1, characterized in that: A first support ring (4) is fixed on the inner wall of the sealing tube (2) on the side close to the top tube (1), and a second support ring (5) is fixed on the inner wall of the top tube (1) on the side close to the sealing tube (2).

7. The pipe jacking connection structure for crossing a railway according to claim 6, characterized in that: A reinforcement ring (41) is fixed to one end of the first support ring (4) close to the second support ring (5), and a second slot (51) for inserting the reinforcement ring (41) is provided on the second support ring (5).

8. The pipe jacking connection structure for crossing a railway according to claim 7, characterized in that: A locking bolt (42) is provided on the second support ring (5), and the reinforcement ring (41) and the second support ring (5) are fixed via the locking bolt (42).

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