A longitudinal joint quick connecting joint for tunnel segment

Abstract

The utility model discloses a kind of longitudinal joint quick connection joint for tunnel segment, including male connector assembly and female connector assembly, the connector bolt of outside exploration is provided in male connector assembly, the female connector of female connector assembly is slidably inserted into the connector bolt of outside exploration, after connector bolt and female connector insertion fixation, the longitudinal joint quick connection of tunnel segment is realized.The utility model does not need to set hand hole on tunnel segment, can effectively improve the stress performance of longitudinal joint, effectively solve the problems, such as weakening segment bearing capacity, needing a large number of manual work, construction speed slow etc. when bolt connecting piece is used in shield tunnel. Threaded sleeve and anti-pulling screw in female connector assembly and male connector assembly are mutually used, connector bolt is standard part, with simple structure, low manufacturing difficulty, the advantages of good economy.The utility model realizes automatic fast tightening locking after tunnel segment assembly in position, with simple structure, construction is convenient, safe and reliable, the advantages of good economy.

Description

Technical Field

[0001] This utility model belongs to the field of bridge construction technology, specifically relating to a quick-connect joint for longitudinal seams of tunnel segments. Background Technology

[0002] Shield tunnels are composed of prefabricated lining segments, and the joints of these segments are the weakest points in the shield tunnel structure. Currently, bolts are commonly used as connectors for longitudinal joints in domestic shield tunnels, including short straight bolts, long straight bolts, oblique bolts, and bent bolts. However, bolts, as a commonly used connector for longitudinal joints, present several problems in practical use. Using bolted connectors requires manholes to be installed in the lining segments, which weakens the segments' load-bearing capacity. During construction, bolted connectors require manual tightening by workers, which consumes a significant amount of manpower and slows down the construction process.

[0003] To address the shortcomings of the aforementioned technologies, a quick-connect joint for longitudinal joints of tunnel segments was developed to solve problems such as the inability to adapt to construction errors and low installation efficiency in existing technologies. Summary of the Invention

[0004] This utility model is proposed to solve the problems existing in the prior art, and its purpose is to provide a quick connection joint for longitudinal seams of tunnel segments.

[0005] The technical solution of this utility model is: a quick connection joint for longitudinal joints of tunnel segments, including a male joint assembly and a female joint assembly. The male joint assembly is provided with an outwardly protruding joint bolt, which is slidably inserted into the female joint of the female joint assembly. After the joint bolt and the female joint are inserted and fixed, the longitudinal joint of the tunnel segments is quickly connected.

[0006] Furthermore, the female connector includes a retaining cavity that accommodates the nut of the connector bolt. The lower part of the retaining cavity is open to facilitate the insertion of the connector bolt from bottom to top.

[0007] Furthermore, the slot cavity has a U-shaped groove on the side facing the male connector assembly that communicates with its interior, and the U-shaped groove facilitates the passage of the shank of the connector bolt.

[0008] Furthermore, the width of the U-shaped groove is greater than the diameter of the shank of the connector bolt, but smaller than the diameter of the nut of the connector bolt.

[0009] Furthermore, the slot cavity forms an upper platform and a lower ramp on the inner sidewall of the male connector assembly.

[0010] Furthermore, the male connector assembly includes a male sleeve with a central hole formed at the end of the male sleeve facing the female connector into which the connector bolt is inserted.

[0011] Furthermore, a nut is provided inside the male sleeve, and the threaded section of the connector bolt is inserted into the male sleeve and connected to the nut.

[0012] Furthermore, a disc spring is fitted onto the joint bolt, with one end of the disc spring contacting the nut and the other end contacting the male sleeve.

[0013] Furthermore, the male sleeve and female connector are also equipped with fixing components.

[0014] The beneficial effects of this utility model are as follows:

[0015] This invention eliminates the need for handholes on tunnel segments, effectively improving the load-bearing capacity of longitudinal joints and solving problems associated with bolted connections in shield tunnels, such as reduced segment bearing capacity, high labor requirements, and slow construction speed. The threaded sleeves and pull-out bolts in the female and male joint assemblies are interchangeable, and the joint bolts are standard parts, offering advantages such as simple structure, low manufacturing difficulty, and good economic efficiency.

[0016] This invention enables automatic and rapid tensioning and locking of tunnel segments after they are assembled and positioned. It has the advantages of simple structure, convenient construction, safety and reliability, and good economy. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the present invention;

[0018] Figure 2 This is a perspective view of the present invention;

[0019] Figure 3 This is a schematic diagram of the female connector in this utility model;

[0020] in:

[0021] 1. Male connector assembly; 2. Connector bolts

[0022] 3 Female connector assembly

[0023] 1-1 Anti-pull-out screw 1-2 Threaded sleeve

[0024] 1-3 Male sleeve 1-4 Nut

[0025] 1-5 disc springs

[0026] 3-1 Female connector. Detailed Implementation

[0027] The present invention will now be described in detail with reference to the accompanying drawings and embodiments:

[0028] like Figures 1 to 3As shown, a quick-connect joint for longitudinal seams of tunnel segments includes a male connector assembly 1 and a female connector assembly 3. The male connector assembly 1 is provided with an outwardly protruding connector bolt 2, which is slidably inserted into the female connector 3-1 of the female connector assembly 3. After the connector bolt 2 and the female connector 3-1 are inserted and fixed, the longitudinal seam of the tunnel segments is quickly connected.

[0029] The female connector 3-1 includes a retaining cavity that accommodates the nut of the connector bolt 2. The lower part of the retaining cavity is open to facilitate the insertion of the connector bolt 2 from bottom to top.

[0030] The slot cavity forms a U-shaped groove on the side facing the male connector assembly 1, which communicates with its interior. The U-shaped groove facilitates the passage of the shank of the connector bolt 2.

[0031] The width of the U-shaped groove is greater than the diameter of the shank of the connector bolt 2, but less than the diameter of the nut of the connector bolt 2.

[0032] The slot cavity forms an upper platform and a lower inclined platform on the inner sidewall facing the male connector assembly 1.

[0033] The male connector assembly 1 includes a male sleeve 1-3, the end of which facing the female connector 3-1 forms a central hole into which the connector bolt 2 is inserted.

[0034] The male sleeve 1-3 is provided with a nut 1-4, and the threaded section of the joint bolt 2 is inserted into the male sleeve 1-3 and connected to the nut 1-4.

[0035] A disc spring 1-5 is also fitted on the joint bolt 2. One end of the disc spring 1-5 is in contact with the nut 1-4, and the other end of the disc spring 1-5 is in contact with the male sleeve 1-3.

[0036] The male sleeve 1-3 and the female connector 3-1 are also equipped with fixing components.

[0037] Specifically, the fixing structure includes an anti-pull-out screw 1-1, the threaded section of which is screwed into the internal thread of the threaded sleeve 1-2, and the external thread of the threaded sleeve 1-2 is formed on the outside. The external thread is used to connect the male sleeve 1-3 / female connector 3-1.

[0038] Specifically, a disc spring 1-5 is provided at the nut 1-4 for support, which can accommodate the rotation of the connector bolt 2 and provide a certain tensile displacement and tensile force, so as to facilitate the sliding displacement of the connector bolt 2 at the inclined platform at the front end of the female connector 3-1.

[0039] Specifically, when the segment is longitudinally positioned, the joint bolt 2 is in the platform position, and the nut of the joint bolt 2 is in contact with the plane of the female joint 3-1, which is more conducive to structural safety.

[0040] Specifically, the tail of the female connector 3-1 forms an installation position, and an internal thread is formed in the installation position, thereby installing the threaded sleeve 1-2.

[0041] The installation process of this utility model is as follows:

[0042] This utility model is pre-embedded in the longitudinal joint surface of adjacent tunnel segments, and a groove is reserved in the longitudinal joint surface of the female joint component 3. When assembling the tunnel segments, by adjusting the posture of the lining segments, the head of the joint bolt 2 is placed into the groove, and the jack of the shield machine pushes it so that the nut head of the joint bolt 2 slides into the female joint 3-1, thereby quickly completing the assembly of the tunnel segments.

[0043] This invention eliminates the need for handholes on tunnel segments, effectively improving the load-bearing capacity of longitudinal joints and solving problems associated with bolted connections in shield tunnels, such as reduced segment bearing capacity, high labor requirements, and slow construction speed. The threaded sleeves and pull-out bolts in the female and male joint assemblies are interchangeable, and the joint bolts are standard parts, offering advantages such as simple structure, low manufacturing difficulty, and good economic efficiency.

[0044] This invention enables automatic and rapid tensioning and locking of tunnel segments after they are assembled and positioned. It has the advantages of simple structure, convenient construction, safety and reliability, and good economy.

Claims

1. A quick-connect joint for longitudinal seams in tunnel segments, characterized in that: It includes a male connector assembly (1) and a female connector assembly (3). The male connector assembly (1) is provided with an outwardly protruding connector bolt (2). The outwardly protruding connector bolt (2) is slidably inserted into the female connector (3-1) of the female connector assembly (3). After the connector bolt (2) and the female connector (3-1) are inserted and fixed, the longitudinal joint of the tunnel segment is quickly connected.

2. The quick-connect joint for longitudinal seams of tunnel segments according to claim 1, characterized in that: The female connector (3-1) includes a slot cavity that accommodates the nut of the connector bolt (2). The lower part of the slot cavity is open to facilitate the insertion of the connector bolt (2) from bottom to top.

3. The longitudinal joint quick-connector for tunnel segments according to claim 2, characterized in that: The slot cavity forms a U-shaped groove on the side facing the male connector assembly (1) that communicates with its interior, and the U-shaped groove facilitates the passage of the shank of the connector bolt (2).

4. A quick-connect joint for longitudinal seams of tunnel segments according to claim 3, characterized in that: The width of the U-shaped groove is greater than the diameter of the shank of the connector bolt (2) and less than the diameter of the nut of the connector bolt (2).

5. A quick-connect joint for longitudinal seams of tunnel segments according to claim 2, characterized in that: The slot cavity forms an upper platform and a lower ramp on the inner sidewall of the male connector assembly (1).

6. A quick-connect joint for longitudinal seams of tunnel segments according to claim 2, characterized in that: The male connector assembly (1) includes a male sleeve (1-3) with a central hole formed at the end of the male sleeve (1-3) facing the female connector (3-1) into which the connector bolt (2) is inserted.

7. A quick-connect joint for longitudinal seams of tunnel segments according to claim 6, characterized in that: The male sleeve (1-3) is provided with a nut (1-4), and the threaded section of the joint bolt (2) is inserted into the male sleeve (1-3) and connected to the nut (1-4).

8. A quick-connect joint for longitudinal seams of tunnel segments according to claim 7, characterized in that: A disc spring (1-5) is also fitted on the joint bolt (2). One end of the disc spring (1-5) is in contact with the nut (1-4), and the other end of the disc spring (1-5) is in contact with the male sleeve (1-3).

9. A quick-connect joint for longitudinal seams of tunnel segments according to claim 6, characterized in that: The male sleeve (1-3) and female connector (3-1) are also equipped with fixing components.

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