Longitudinal seam quick connection joint for tunnel segment

Abstract

The invention discloses a longitudinal seam quick connector for tunnel segments, which comprises a male connector assembly and a female connector assembly, an outward-extending connector bolt is arranged in the male connector assembly, and the outward-extending connector bolt is inserted into a female connector of the female connector assembly in a sliding manner; and the joint bolt and the female joint are inserted and fixed to realize quick connection of the longitudinal joint of the tunnel segment. A hand hole does not need to be formed in the tunnel segment, the stress performance of the longitudinal joint connector can be effectively improved, and the problems that when a shield tunnel adopts a bolt connecting piece, the segment bearing capacity is weakened, a large amount of manpower is needed, and the construction speed is low are effectively solved. Threaded sleeves and anti-pulling screws in the female connector assembly and the male connector assembly are universal, connector bolts are standard parts, and the connector has the advantages of being simple in structure, low in manufacturing difficulty and good in economical efficiency. The automatic tensioning and locking device realizes automatic and quick tensioning and locking after the tunnel segments are assembled in place, and has the advantages of simple structure, convenience in construction, safety, reliability and good economical efficiency.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of bridge construction, and particularly relates to a longitudinal joint quick connecting joint for a tunnel segment. BACKGROUND

[0002] A shield tunnel is composed of assembled lining segments, and the joint of the lining segment is a weak part of the shield tunnel structure. At present, bolts are generally used as connecting pieces of longitudinal joints in domestic shield tunnels, such as short straight bolts, long straight bolts, inclined bolts and bent bolts. The bolt as a commonly used connecting piece of longitudinal joints will bring many problems in actual use. When the bolt connecting piece is used, a hand hole needs to be arranged on the lining segment, which will weaken the carrying capacity of the segment. In construction, the bolt connecting piece needs to be fastened by workers, which will consume a large amount of manpower and slow down the construction speed.

[0003] In view of the above technical deficiencies, the longitudinal joint quick connecting joint for a tunnel segment is developed to solve the problems that the prior art cannot adapt to construction errors and has low installation efficiency. SUMMARY

[0004] The application is proposed to solve the problems in the prior art, and aims to provide a longitudinal joint quick connecting joint for a tunnel segment.

[0005] The technical scheme of the application is: a longitudinal joint quick connecting joint for a tunnel segment, comprising a male joint assembly and a female joint assembly, an externally protruding joint bolt is arranged in the male joint assembly, the externally protruding joint bolt is slidably inserted into a female joint of the female joint assembly, and the joint bolt and the female joint are inserted and fixed to realize the longitudinal joint quick connection of the tunnel segment.

[0006] Further, the female joint comprises a clamping groove cavity, the clamping groove cavity accommodates a nut of the joint bolt, and the clamping groove cavity is open at the lower part to facilitate the joint bolt to be placed from bottom to top.

[0007] Further, a U-shaped groove is formed in the side of the clamping groove cavity facing the male joint assembly and communicating with the inside of the clamping groove cavity, and the U-shaped groove facilitates the rod part of the joint bolt to pass through.

[0008] Further, the width of the U-shaped groove is greater than the diameter of the rod part of the joint bolt and less than the diameter of the nut of the joint bolt.

[0009] Further, an inner side wall of the clamping groove cavity facing the male joint assembly forms a platform at the upper part and an inclined table at the lower part.

[0010] Further, the male joint assembly comprises a male sleeve, and a center hole for the joint bolt to be loaded is formed in the end of the male sleeve facing the female joint.

[0011] Further, the male sleeve is provided with a nut, and the threaded segment of the joint bolt is inserted into the male sleeve and connected with the nut.

[0012] Further, a disc spring is sleeved on the joint bolt, one end of the disc spring is in contact with the nut, and the other end of the disc spring is in contact with the male sleeve.

[0013] Further, the male sleeve and the female joint are further provided with a fixing assembly.

[0014] The beneficial effects of the present application are as follows: The present application does not need to set a hand hole on the tunnel segment, can effectively improve the stress performance of the longitudinal joint, effectively solve the problems of weakening the bearing capacity of the segment, needing a large amount of manual work, slow construction speed and the like when the bolt connecting piece is used in the shield tunnel. The threaded sleeve and the anti-pulling screw rod in the female joint assembly and the male joint assembly are mutually used, the joint bolt is a standard part, has the advantages of simple structure, low manufacturing difficulty and good economy.

[0015] The present application realizes automatic and rapid tensioning and locking after the tunnel segment is assembled and positioned, has the advantages of simple structure, convenient construction, safety and reliability and good economy. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 is a sectional view of the present application; Fig. 2 is a perspective view of the present application; Fig. 3 is a structure schematic view of the female joint in the present application; Among them: 1 male joint assembly 2 joint bolt 3 female joint assembly 1-1 anti-pulling screw rod 1-2 threaded sleeve 1-3 male sleeve 1-4 nut 1-5 disc spring 3-1 female joint. DETAILED DESCRIPTION

[0017] Hereinafter, the present application is described in detail with reference to the drawings and examples: As Figs. 1 to 3 shown, a longitudinal joint quick connecting joint for tunnel segment, comprising a male joint assembly 1 and a female joint assembly 3, the male joint assembly 1 is provided with an externally protruding joint bolt 2, the externally protruding joint bolt 2 is slidably inserted into a female joint 3-1 of the female joint assembly 3, and the joint bolt 2 is inserted and fixed with the female joint 3-1 to realize the longitudinal joint quick connection of the tunnel segment.

[0018] The female joint 3-1 comprises a clamping groove cavity accommodating the nut of the joint bolt 2, and the lower part of the clamping groove cavity is open, facilitating the joint bolt 2 to be placed from bottom to top.

[0019] The clamping groove cavity is formed with a U-shaped groove in communication with the inside of the male joint assembly 1, and the U-shaped groove facilitates the rod part of the joint bolt 2 to pass through.

[0020] The width of the U-shaped groove is greater than the diameter of the rod part of the joint bolt 2 and less than the diameter of the nut of the joint bolt 2.

[0021] The inside side wall of the clamping groove cavity towards the male joint assembly 1 is formed with a platform at the upper part and an inclined table at the lower part.

[0022] The male joint assembly 1 comprises a male sleeve 1-3, and the male sleeve 1-3 is formed with a central hole at the end part of the female joint 3-1 for accommodating the joint bolt 2.

[0023] The male sleeve 1-3 is provided with a nut 1-4, the threaded segment of the joint bolt 2 is inserted into the male sleeve 1-3 and connected with the nut 1-4.

[0024] The joint bolt 2 is further sleeved with a disc spring 1-5, 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.

[0025] The male sleeve 1-3 and the female joint 3-1 are further provided with a fixing assembly.

[0026] Specifically, the fixing structure comprises an anti-pulling screw rod 1-1, the threaded segment of the anti-pulling screw rod 1-1 is screwed into the internal thread of a threaded sleeve 1-2, the threaded sleeve 1-2 is formed with external threads outside, and the external threads are used for connecting the male sleeve 1-3 / female joint 3-1.

[0027] Specifically, the nut 1-4 is provided with the disc spring 1-5 for support, can adapt to the rotation of the joint bolt 2 and provide certain tensile displacement and tensile force, and facilitates the joint bolt 2 to slide and displace at the inclined table at the front end of the female joint 3-1.

[0028] Specifically, when the pipe piece is longitudinally positioned, the joint bolt 2 is at 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 the safety of the structure.

[0029] Specifically, the tail part of the female joint 3-1 is formed with a mounting position, and the mounting position is formed with internal threads, so as to mount the threaded sleeve 1-2.

[0030] The installation process of the present application is as follows: The application is embedded in the longitudinal joint surface of adjacent tunnel segments, and a notch is reserved on the embedded longitudinal joint surface of the female joint assembly 3; when the tunnel segments are assembled, the joint bolt 2 head is put into the notch by adjusting the attitude of the lining segment, and the joint bolt 2 nut head is slid into the female joint 3-1 by the jacking of the shield machine, so that the assembly of the tunnel segment is quickly completed.

[0031] The application can effectively improve the stress performance of the longitudinal joint, and effectively solve the problems of weakening the bearing capacity of the segment, requiring a large amount of manual work, slow construction speed and the like when the bolt connecting piece is used in the shield tunnel. The threaded sleeve and the anti-pulling screw in the female joint assembly and the male joint assembly are mutually used, and the joint bolt is a standard part, which has the advantages of simple structure, low manufacturing difficulty and good economy.

[0032] The application realizes the automatic and rapid tensioning and locking after the assembly of the tunnel segment, and 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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