Insertion expansion type detachable pipe piece connecting structure

Abstract

The invention discloses an insertion expansion type detachable pipe piece connecting structure which comprises a first pipe piece, a second pipe piece and a connecting assembly for splicing. The first pipe piece and the second pipe piece are built in a tunnel for connection, sealing and load transmission. The first duct piece is spliced with the second duct piece through the connecting assembly; the connecting assembly comprises an embedded assembly and an inserting assembly which are arranged on the second segment in advance, and a locking assembly which is arranged on the first segment in advance. A spring bolt is slidably arranged at one end of the inserting assembly; the embedded assembly is arranged in the inserting assembly in an embedded mode, the inserting assembly is provided with a spring bolt in a sliding mode, and the spring bolt can enable the inserting assembly to be arranged in the locking assembly in an embedded mode, so that the effect that the first pipe piece and the second pipe piece are conveniently installed and connected through the connecting assembly and are detachable is achieved; therefore, the sealing and load transmission requirements required by segment connection are met, and the method has the advantage that the labor cost in the construction process is remarkably reduced.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel engineering, and in particular to an insertion expansion type detachable pipe segment connection structure. Background Art

[0002] With the rapid growth of urban population, land resources are becoming increasingly scarce, and the development of large-span underground projects is seen as an effective way to ease traffic congestion and improve the efficiency of underground space use, and its importance is increasing. In the development of urban underground space, it is very important to improve the standards and structural performance of construction projects; therefore, the innovation and improvement of shield technology is of great significance to expanding the use of underground space, reducing urban congestion and relieving traffic pressure. In this process, the shield segment connection structure plays a vital role.

[0003] The tightness and reliability of the shield segment connection structure is a key link in ensuring the quality and safety of tunnel construction. It is not only related to the stability of the tunnel, but also the basis for achieving long-term stable operation of the tunnel, and directly affects the waterproof performance and structural integrity of the tunnel.

[0004] The current shield segment connection structure has the following shortcomings:

[0005] 1. Currently, most of the shield segment connection structures on the market require a lot of manual tightening operations, which not only increases the construction cost, but the uncertainty of manual operations also increases the difficulty of construction quality control.

[0006] 2. Traditional connection methods may result in insufficient joint connection accuracy, thereby affecting the overall stiffness and stability of the tunnel structure.

[0007] 3. Design limitations of the connecting structure may also lead to insufficient structural stiffness, limiting the bearing capacity and durability of the tunnel.

[0008] 4. The shield segment connection structure exposed to humidity and groundwater environment for a long time is prone to rust and aging, which not only weakens its bearing capacity, but also shortens the service life of the tunnel and greatly reduces its safety.

[0009] In order to solve the above-mentioned deficiencies of the current shield segment connection structure, an insert-expandable detachable segment connection structure is urgently needed. Summary of the invention

[0010] In order to solve the shortcomings of the shield segment connection structure mentioned in the above background technology, the present invention provides an insertion expansion type detachable segment connection structure. The technical solution adopted by the present invention is as follows:

[0011] An insertion expansion type detachable pipe segment connection structure comprises a first pipe segment and a second pipe segment constructed in a tunnel for connection, sealing and load transfer, and a connection component for splicing; the first pipe segment is spliced ​​with the second pipe segment via the connection component; the connection component comprises an embedded component preset in the second pipe segment, a plug-in component and a locking component preset in the first pipe segment.

[0012] In one embodiment, the embedded component is configured to be bolt-like and has a cylindrical body, and a round head is provided at one end of the cylindrical body, and an outer surface of the round head is provided with an external thread near the end of the cylindrical body.

[0013] In one embodiment, the plug-in component includes a threaded cavity, an embedded cavity and a locking tongue; the threaded cavity is arranged at the bottom of the plug-in component, the embedded cavity is arranged at the upper end of the threaded cavity, and the embedded cavity is connected to the threaded cavity and passes through both ends of the plug-in component.

[0014] In one of the embodiments, an inner surface of the threaded cavity is provided with an internal thread near the embedded cavity end; and a locking tongue is slidably provided on the plug-in assembly near the embedded cavity end.

[0015] In one of the embodiments, the plug-in assembly is fixedly provided with an inclined connecting tenon near the embedding cavity end; a movable groove is provided in the locking tongue, and the connecting tenon is slidably installed in the movable groove at one end away from the embedding cavity.

[0016] In one of the embodiments, the connecting tenon is configured as a "T"-shaped member, the locking tongue is configured as a pentagonal trapezoidal column, and the connecting tenon is slidably installed in the movable groove perpendicular to the lower inclined surface of the locking tongue.

[0017] In one of the embodiments, two connecting tenons are disposed opposite to each other on the plug-in assembly, and a spring is fixedly disposed between two locking tongues correspondingly connected to the two connecting tenons.

[0018] In one of the embodiments, the locking assembly includes an inner cavity and a limiting cavity. The inner cavity is provided at the bottom of the locking assembly, and the limiting cavity is semi-enclosed at the upper end of the inner cavity.

[0019] In one embodiment, the lateral dimension of the limiting cavity is larger than that of the inner cavity, and the limiting cavity is provided with an inclined limiting groove near the inner cavity end.

[0020] In one embodiment, the embedded component is nested inside the plug-in component, and the plug-in component is nested inside the locking component.

[0021] The beneficial effects of the insertion expansion type detachable pipe segment connection structure of the present invention are as follows:

[0022] 1. By nesting the embedded component inside the plug-in component, the plug-in component is nested inside the locking component, the embedded component is preset on the second pipe segment, and the locking component is preset on the first pipe segment, the first pipe segment and the second pipe segment are conveniently installed and connected through the connecting component, which has the advantage of significantly reducing the labor cost during the construction process.

[0023] 2. The lock tongue is slidably arranged by the plug-in assembly, and a spring structure is arranged between the lock tongues, so that the lock tongue can be controlled to be in a retracted or limited state through the embedded assembly, which has the advantages of convenience and detachability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of a partial cross-sectional structure of an insertion expansion type detachable pipe segment connection structure of the present invention;

[0025] Figure 2 It is a schematic cross-sectional structure diagram of a connection assembly of an insertion expansion type detachable pipe segment connection structure of the present invention;

[0026] Figure 3 It is a schematic cross-sectional structure diagram of an embedded component of an insertion expansion type detachable segment connection structure of the present invention;

[0027] Figure 4 It is a schematic cross-sectional structure diagram of a plug-in assembly of an insertion expansion type detachable pipe segment connection structure of the present invention;

[0028] Figure 5 It is a schematic cross-sectional structure diagram of a locking assembly of an insertion expansion type detachable segment connection structure of the present invention;

[0029] Figure 6 It is a first structural schematic diagram of a locking tongue and a connecting tenon of an insertion expansion type detachable pipe segment connection structure of the present invention;

[0030] Figure 7 A second structural schematic diagram of a locking tongue and a connecting tenon of an insertion expansion type detachable pipe segment connection structure of the present invention;

[0031] Figure 8 It is a schematic cross-sectional structure diagram of a locking tongue and a connecting tenon of an insertion expansion type detachable pipe segment connection structure of the present invention;

[0032] Among them, 1. first pipe segment; 2. second pipe segment; 3. connection component; 301. embedded component; 302. plug-in component; 303. locking component; 311. external thread; 321. threaded cavity; 322. embedded cavity; 323. locking tongue; 324. spring; 325. connecting tenon; 331. inner cavity; 332. limiting groove; 333. limiting cavity; 3231. movable groove. DETAILED DESCRIPTION

[0033] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] like Figure 1-8 As shown, an insertion expansion type detachable pipe segment connection structure includes a first pipe segment 1 and a second pipe segment 2 constructed in a tunnel for connection, sealing, and load transfer, and a connection component 3 for splicing; the first pipe segment 1 is spliced ​​with the second pipe segment 2 through the connection component 3; the connection component 3 includes an embedded component 301 preset in the second pipe segment 2, a plug-in component 302, and a locking component 303 preset in the first pipe segment 1.

[0035] In this embodiment, the connection component 3 is formed by the cooperation of the embedded component 301, the plug-in component 302 and the locking component 303, and the first pipe segment 1 and the second pipe segment 2 are spliced ​​and sealed by the connection component 3.

[0036] In one embodiment, the embedded component 301 is configured to be bolt-like and has a cylindrical body, and a round head is provided at one end of the cylindrical body, and an external thread 311 is provided on the outer surface of the round head near the end of the cylindrical body.

[0037] In this embodiment, the embedded component 301 is fixedly installed in the plug-in component 302 through the external thread 311 .

[0038] In one embodiment, the plug-in component 302 includes a threaded cavity 321, an embedded cavity 322 and a locking tongue 323; the threaded cavity 321 is arranged at the bottom of the plug-in component 302, the embedded cavity 322 is arranged at the upper end of the threaded cavity 321, and the embedded cavity 322 is connected to the threaded cavity 321 and passes through both ends of the plug-in component 302.

[0039] In this embodiment, the embedded component 301 is nested in the threaded cavity 321 and the embedded cavity 322 , and the embedded component 301 can penetrate the plug-in component 302 .

[0040] In one embodiment, an internal thread (not shown in the figure) is provided on the inner surface of the threaded cavity 321 near the end of the embedded cavity 322 ; a locking tongue 323 is slidably provided on the plug-in component 302 near the end of the embedded cavity 322 .

[0041] In this embodiment, the internal thread (not shown in the figure) provided in the threaded cavity 321 is assembled with the external thread 311 of the embedded component 301, so as to fix the embedded component 301 in the plug-in component 302, and the longitudinal dimension of the embedded component 301 is larger than that of the plug-in component 302, and one end of the embedded component 301 is in contact with the locking tongue 323.

[0042] In one embodiment, the plug-in component 302 is fixedly provided with an inclined connecting tenon 325 near the embedding cavity 322; a movable groove 3231 is provided in the locking tongue 323, and the connecting tenon 325 is slidably installed in the movable groove 3231 at one end away from the embedding cavity 322.

[0043] In this embodiment, one end of the connecting tenon 325 is fixedly connected to the plug-in assembly 302, and the other end of the connecting tenon 325 is slidably installed in the movable groove 3231. The movable installation of the locking tongue 323 can be achieved by assembling the connecting tenon 325 and the locking tongue 323.

[0044] In one embodiment, the connecting tenon 325 is configured as a “T”-shaped member, the locking tongue 323 is configured as a pentagonal trapezoidal column, and the connecting tenon 325 is slidably installed in the movable groove 3231 perpendicular to the lower inclined surface of the locking tongue 323 .

[0045] In this embodiment, the “T”-shaped connecting tenon 325 is slidably installed in the movable groove 3231 , so that the connecting tenon 325 limits the locking tongue 323 .

[0046] In one embodiment, two connecting tenons 325 are disposed opposite to each other on the plug-in assembly 302 , and a spring 324 is fixedly disposed between two locking tongues 323 connected to the two connecting tenons 325 .

[0047] In this embodiment, the spring 324 is configured as a tension spring 324 , and the spring 324 provides a pulling force toward the two locking tongues 323 , so that the locking tongues 323 move toward each other until the lateral dimension of the spring 324 is consistent with the lateral dimension of the plug assembly 302 .

[0048] In one embodiment, the locking assembly 303 includes an inner cavity 331 and a limiting cavity 333 . The inner cavity 331 is disposed at the bottom of the locking assembly 303 , and the limiting cavity 333 is semi-enclosed at the upper end of the inner cavity 331 .

[0049] In this embodiment, the splicing assembly extends from the inner cavity 331 into the limiting cavity 333 .

[0050] In one embodiment, the lateral dimension of the limiting cavity 333 is larger than that of the inner cavity 331 , and an inclined limiting groove 332 is provided at the end of the limiting cavity 333 close to the inner cavity 331 .

[0051] In this embodiment, the inclination of the limiting groove 332 is consistent with the inclination of the bottom of the locking tongue 323 of the plug-in component 302 , and the plug-in component 302 can be fixed by the cooperation between the limiting groove 332 and the locking tongue 323 .

[0052] In one embodiment, the embedded component 301 is nested inside the plug-in component 302 , and the plug-in component 302 is nested inside the locking component 303 .

[0053] In this embodiment, the first pipe segment 1 and the second pipe segment 2 are spliced ​​together by the cooperation of the embedded component 301, the plug-in component 302 and the locking component 303, thereby completing the structural connection between the pipe segments.

[0054] The specific installation principle of the insertion expansion type detachable pipe segment connection structure of the present invention is as follows:

[0055] First, the embedded component 301 preset in the second pipe segment 2 is embedded in the plug-in component 302 until the external thread 311 of the embedded component 301 contacts the internal thread of the plug-in component 302; the plug-in component 302 equipped with the embedded component 301 is embedded in the locking component 303, and the locking tongue 323 of the plug-in component 302 is completely embedded in the limiting cavity 333 of the locking component 303; then the embedded component 301 is rotated so that the embedded component 301 is completely embedded in the embedding cavity 322 of the plug-in component 302. In this process, due to the The longitudinal dimension of the embedded component 301 is greater than the longitudinal dimension of the plug-in component 302. As the embedded component 301 continues to go deeper, the locking tongue 323 of the plug-in size is pushed out to the surrounding areas by the top of the embedded component 301 in the limiting cavity 333, and at this time, the locking tongue 323 contacts the limiting groove 332 of the locking component 303 to fix the plug-in component 302, thereby completing the fixed connection between the embedded component 301 and the locking component 303, that is, completing the fixed splicing of the first pipe segment 1 and the second pipe segment 2, thereby realizing the connection and sealing between the pipe segments.

[0056] Similarly, when disassembling an insertion and expansion type detachable pipe segment connection structure of the present invention, it is only necessary to rotate the embedded component 301 to remove it from the plug-in component 302. When the locking tongue 323 loses the force of the embedded component 301, the locking tongue 323 moves toward each other under the action of the spring 324, so that the plug-in component 302 can be removed from the locking component 303, thereby completing the disconnection of the first pipe segment 1 and the second pipe segment 2.

[0057] The present invention and its embodiments are described above, which is not restrictive. What is shown in the accompanying drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and do not deviate from the purpose of the invention, they can creatively design structural methods and embodiments similar to the technical scheme, which should all fall within the scope of protection of the present invention.

Claims

1. An insertion expansion type detachable segment connection structure, characterized in that: It comprises a first pipe segment (1) and a second pipe segment (2) constructed in a tunnel for connection, sealing and load transmission, and a connection assembly (3) for splicing; The first pipe segment (1) is spliced ​​with the second pipe segment (2) via the connection assembly (3); The connection component (3) comprises an embedded component (301) preset on the second pipe segment (2), a plug-in component (302), and a locking component (303) preset on the first pipe segment (1).

2. The insertion expansion type detachable segment connection structure according to claim 1, characterized in that: The embedded component (301) is configured to be bolt-like and has a cylindrical body, and a round head is provided at one end of the cylindrical body, and an external thread (311) is provided on the outer surface of the round head near the end of the cylindrical body.

3. The insertion expansion type detachable segment connection structure according to claim 1, characterized in that: The plug-in component (302) comprises a threaded cavity (321), an embedded cavity (322) and a locking tongue (323); the threaded cavity (321) is arranged at the bottom of the plug-in component (302), the embedded cavity (322) is arranged at the upper end of the threaded cavity (321), and the embedded cavity (322) is connected to the threaded cavity (321) and passes through both ends of the plug-in component (302).

4. The insertion expansion type detachable segment connection structure according to claim 3, characterized in that: An internal thread is provided on the inner surface of the threaded cavity (321) near the end of the embedded cavity (322); and a locking tongue (323) is slidably provided on the plug-in assembly (302) near the end of the embedded cavity (322).

5. The insertion expansion type detachable pipe segment connection structure according to claim 4, characterized in that: The plug-in assembly (302) is fixedly provided with an inclined connecting tenon (325) near the embedding cavity (322); a movable groove (3231) is provided in the locking tongue (323), and the connecting tenon (325) is slidably installed in the movable groove (3231) at one end away from the embedding cavity (322).

6. The insertion expansion type detachable segment connection structure according to claim 5, characterized in that: The connecting tenon (325) is configured as a "T"-shaped member, the locking tongue (323) is configured as a pentagonal trapezoidal column, and the connecting tenon (325) is slidably installed in the movable groove (3231) perpendicular to the lower inclined surface of the locking tongue (323).

7. The insertion expansion type detachable segment connection structure according to claim 6, characterized in that: Two connecting tenons (325) are arranged opposite to each other on the plug-in assembly (302), and a spring (324) is fixedly arranged between two locking tongues (323) correspondingly connected to the two connecting tenons (325).

8. The insertion expansion type detachable segment connection structure according to claim 1, characterized in that: The locking assembly (303) comprises an inner cavity (331) and a limiting cavity (333); the inner cavity (331) is arranged at the bottom of the locking assembly (303); and the limiting cavity (333) is arranged in a semi-enclosed manner at the upper end of the inner cavity (331).

9. The insertion expansion type detachable segment connection structure according to claim 8, characterized in that: The lateral dimension of the limiting cavity (333) is larger than that of the inner cavity (331), and an inclined limiting groove (332) is provided at the end of the limiting cavity (333) close to the inner cavity (331).

10. The insertion expansion type detachable segment connection structure according to claim 1, characterized in that: The embedded component (301) is nested inside the plug-in component (302), and the plug-in component (302) is nested inside the locking component (303).

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