CN-121993481-A - Bolt with locking stopping function and tunnel segment fastening and mounting structure

Abstract

The invention relates to a bolt with a locking and stopping function and a tunnel segment fastening and installing structure, wherein the bolt comprises a bolt body and a base, the base is sleeved at one end of the bolt body corresponding to a nut, and the base is abutted with the nut of the bolt body; an anti-loosening and anti-backing mechanism is arranged between the base and one end of the bolt body and is used for preventing the bolt body from reversely rotating after being screwed in place. The anti-loosening and anti-slip device has the advantages of simple structure and reasonable design, and can prevent the bolts from loosening and falling off in the vibration process to cause safety accidents by utilizing the effective mode of the anti-loosening and anti-slip mechanism to screw the bolts, so that the anti-loosening and anti-slip device is safe and reliable.

Inventors

• LV JIANPING
• XIA XIN
• Ying Dongji
• Fan Zhifan
• Shang Zuyu

Assignees

• 中铁武汉电气化局集团科工装备有限公司

Dates

Publication Date

20260508

Application Date

20251230

Claims (10)

1. 1. The bolt with the anti-loosening and anti-backing function is characterized by comprising a bolt body (1) and a base (2), wherein the base (2) is sleeved at one end of the bolt body (1) corresponding to a nut, the base (2) is abutted to the nut of the bolt body (1), an anti-loosening and anti-backing mechanism is arranged between the base (2) and one end of the bolt body (1), and the anti-loosening and anti-backing mechanism is used for preventing the bolt body (1) from reversely rotating after being screwed in place.
2. 2. The bolt with the anti-loosening and anti-backing function according to claim 1, wherein the base (2) is of a cylindrical structure and is coaxially sleeved outside the bolt body (1).
3. 3. The bolt with the anti-loosening and anti-backing function according to claim 2, wherein a plurality of anti-backing grooves (3) are uniformly formed in one end of the bolt body (1) at intervals along the circumferential direction of the bolt body, the anti-loosening and anti-backing mechanism comprises a plurality of anti-backing pieces (4), the anti-loosening pieces (4) are uniformly arranged in the base (2) at intervals along the circumferential direction of the base (2), and one ends of the anti-loosening pieces (4) can be respectively inserted into the corresponding anti-backing grooves (3) when the bolt body (1) is overturned.
4. 4. The bolt with the anti-loosening and anti-backing function according to claim 3 is characterized in that a plurality of clamping grooves (5) are uniformly arranged at one end of the bolt body (1) at intervals along the circumferential direction of the bolt body, the clamping grooves (5) are respectively distributed on two sides of the notch of the anti-backing groove (3), an annular groove (6) is formed in the inner wall of the base (2), a clamp spring (7) is sleeved at one end of the bolt body (1), the clamp spring (7) is clamped in the clamping grooves (5), and the outer side of the clamp spring extends into the annular groove (6).
5. 5. A bolt with anti-loosening and anti-backing function according to claim 3, wherein the groove walls of the anti-backing grooves (3) are respectively arc-shaped structures, and the anti-backing pieces (4) are respectively bent plate-shaped structures.
6. 6. The bolt with the anti-loose and anti-back function according to claim 5, wherein the bending angle of the plurality of anti-back pieces (4) ranges from 120 ° to 150 °.
7. 7. The bolt with the anti-loosening and anti-backing function according to claim 2 is characterized in that a plurality of anti-backing grooves (3) are uniformly formed in the inner wall of the base (2) at intervals along the circumferential direction of the base, the anti-loosening and anti-backing mechanism comprises a plurality of anti-backing pieces (4), the anti-loosening pieces (4) are uniformly arranged at one end of the bolt body (1) at intervals along the circumferential direction of the bolt body (1), and one ends of the anti-loosening pieces (4) can be respectively inserted into the corresponding anti-backing grooves (3) when the bolt body (1) is overturned.
8. 8. The bolt with the anti-loosening and anti-backing function according to claim 2, wherein a pair of anti-backing holes (8) are oppositely arranged at one end of the bolt body (1), a pair of anti-backing components are oppositely arranged on the inner wall of the base (2), and the pair of anti-backing components are respectively inserted into the pair of anti-backing holes (8) after the bolt body (1) is screwed and positioned.
9. 9. The bolt with the anti-loosening and anti-backing function according to claim 8, wherein the pair of anti-backing assemblies respectively comprise anti-backing pins (9), the two anti-backing pins (9) are distributed oppositely and respectively extend along the radial direction of the base (2), and one ends, far away from each other, of the pair of anti-backing pins (9) are respectively fixedly connected with the inner wall of the base (2) through springs (10).
10. 10. A tunnel segment fastening installation structure, characterized by comprising the bolt with a loose-proof and stop function as set forth in any one of claims 1 to 9.

Description

Bolt with locking stopping function and tunnel segment fastening and mounting structure Technical Field The invention relates to the technical field of tunnel fastening bolts, in particular to a bolt with anti-loosening and anti-backing functions and a tunnel segment fastening and installing structure. Background In the tunnel construction, there is a machine called shield machine for equipment to start and tunnel, which has the functions of excavating and cutting soil body, transporting soil slag, assembling tunnel lining and the like. However, when the shield machine is used for lining a tunnel, a plurality of segments are assembled, a screw is used for connecting and fastening, a cylindrical pipeline is formed by assembling, and the segments are cylindrical walls. The method has the characteristics of effectively controlling ground subsidence, reducing influence on ground buildings, not influencing water surface traffic during underwater excavation and the like, and combines all segments together to form a pipeline. The design is a straight line or a fastening connecting piece with a certain arc shape, namely a duct piece bolt. The segment bolts are key fasteners used for connecting prefabricated lining segments in tunnel shield construction and are mainly divided into two types of annular bolts and longitudinal bolts, wherein the annular bolts are generally longer in length so as to realize inter-segment annular connection. The segmented duct pieces are assembled into a tunnel structure through a straight line or arc-shaped design, and the tunnel structure has the core functions of guaranteeing the overall stability of a tunnel and controlling ground subsidence. The application field of the segment bolts covers projects such as subways, high-speed rails, submarine tunnels and the like, and a double-stage fastening process is required to be executed in construction, namely the segments are immediately and initially screwed after being assembled, and the shield is screwed again after being pushed so as to ensure the sealing of the structure. At present, the duct piece bolt in the prior art is simple in general structure, does not have a locking and stopping function, and is easy to fall off due to vibration in the use process, so that safety accidents are easy to cause. Disclosure of Invention Aiming at the technical problems in the prior art, the invention provides a bolt with anti-loosening and anti-backing functions and a tunnel segment fastening and mounting structure. The technical scheme for solving the technical problems is as follows: The bolt with the anti-loosening and anti-backing function comprises a bolt body and a base, wherein the base is sleeved at one end of the bolt body corresponding to a nut, the base is abutted with the nut of the bolt body, an anti-loosening and anti-backing mechanism is arranged between the base and one end of the bolt body, and the anti-loosening and anti-backing mechanism is used for preventing the bolt body from reversely rotating after being screwed in place. The invention has the advantages that in the use process, the bolts are manually screwed (i.e. the bolts are rotated in the forward direction) by means which can be thought by a person skilled in the art, so as to carry out corresponding fastening operation, and the base is fixed on a corresponding carrier; When the bolts are loosened due to external factors such as vibration and the like in the using process, the anti-loosening and anti-backing mechanism can be utilized to effectively prevent the bolts from reversely rotating, so that the bolts are prevented from loosening and falling off from the carrier, the stability and durability of bolt installation are improved, and the anti-loosening and anti-loosening bolt is safe and reliable. The anti-loosening and anti-loosening device is simple in structure and reasonable in design, and the bolt is reversely rotated after being screwed by using the anti-loosening and anti-loosening mechanism, so that safety accidents caused by loosening and falling of the bolt in the vibration process are prevented, and in addition, each part can be obtained by adopting multi-element metal co-permeation anti-corrosion, so that the service life of the material is prolonged, the overall service life of the structure is prolonged, the product replacement frequency is reduced, and the cost is reduced. On the basis of the technical scheme, the invention can be improved as follows. Further, the base is of a cylindrical structure, and is coaxially sleeved outside the bolt body. The beneficial effect of adopting above-mentioned further scheme is simple structure, and the shape reasonable in design of base can effectually cooperate with the bolt body, guarantees the steadiness of bolt assembly. Furthermore, a plurality of retaining grooves are uniformly arranged at one end of the bolt body at intervals along the circumferential direction of the bolt body, the anti-loosening retaining m