Self-tightening bolt and self-tightening stud

A bolt and stud technology, applied in the field of general machinery, can solve the problems of loose bolts and nuts, affecting work efficiency, waste and other problems

Active Publication Date: 2019-04-19
朱志胤
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The actual use shows that the bolt thread pitch is shortened, the double nuts cooperate with self-locking, and the spring washer is tightened. It does have a certain locking effect, but when encountering high vibration frequency and long construction period, the bolts and nuts will inevitably loosen.
However, if the nut is welded dead, the nut is damaged and the thread is unscrewed, when the mechanical device is to be disassembled, the nut needs to be cut off first, and then the bolt is loosened, which will greatly affect the work efficiency and cause unnecessary waste

Method used

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  • Self-tightening bolt and self-tightening stud

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0084] According to a first embodiment of the present invention, a self-tightening bolt is provided:

[0085] A self-tightening bolt, the self-tightening bolt includes: a bolt body 1, a bolt head 2, a tightening part 3, and a thread structure 4; the bolt head 2 is arranged at one end of the bolt body 1; the tightening part 3 is arranged at The other end of the bolt main body 1; the threaded structure 4 is arranged on the outer surface of the tightening part 3; the tightening part 3 includes: a warping body 301, a deformation pretension seam 302; the tightening part 3 is composed of the The deformation pretension seam 302 separates a plurality of warping bodies 301; the outer circumference of the warping bodies 301 is provided with a thread structure 4; the parts of the warping bodies 301 close to the end of the bolt head 2 are closely attached to each other; The part of the warping body 301 away from the end of the bolt head 2 is separated from each other; the diameter of the ...

Embodiment 1

[0109] A self-tightening bolt, the self-tightening bolt includes: a bolt body 1, a bolt head 2, a tightening part 3, and a thread structure 4; the bolt head 2 is arranged at one end of the bolt body 1; the tightening part 3 is arranged at The other end of the bolt main body 1; the threaded structure 4 is arranged on the outer surface of the tightening part 3; the tightening part 3 includes: a warping body 301, a deformation pretension seam 302; the tightening part 3 is composed of the The deformation pretension seam 302 separates a plurality of warping bodies 301; the outer circumference of the warping bodies 301 is provided with a thread structure 4; the parts of the warping bodies 301 close to the end of the bolt head 2 are closely attached to each other; The part of the warping body 301 away from the end of the bolt head 2 is separated from each other; the diameter of the thread structure 4 on the side of the warping body 301 close to the end of the bolt head 2 is D1, and th...

Embodiment 2

[0111] Repeat Example 1, except that the tightening part 3 also includes: the installation guide head 303, the installation guide head 303 is arranged on the end surface of the tightening part 3; the installation guide head 303 is coaxial with the tightening part 3; the installation guide head 303 and the The connected warping body 301 is separated by the deformation pretension seam 302; the diameter of the installation guide head 303 after separation is D5; D5≤D1.

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PUM

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Abstract

The invention discloses a self-tightening bolt or self-tightening stud. The self-tightening bolt comprises a bolt body, a bolt head, a tightening portion and threaded structures. The self-tightening stud comprises a stud body, a screwing portion and threaded structures. The screwing portion comprises outward warped bodies and a deformation pretension gap; the screwing portion is divided into the multiple outward warped bodies from the deformation pretension gap; the outward warped bodies are provided with the threaded structures; the portions of the ends, close to the bolt head or the stud body, of the outward warped bodies are closely attached to one another; and the portions of the ends, far away from the bolt head or the stud body, of the outward warped bodies are separated from one another. According to the scheme, the self-tightening bolt or self-tightening stud can continuously bear the force in the direction that the bolt or stud is installed in a threaded hole after being installed in the threaded hole through the outward warped bodies on the screwing portion, therefore, the self-tightening effect that the bolt or stud is closer and closer to the threaded hole in the vibration process is achieved, and the durability of a fastening device is improved.

Description

technical field [0001] The invention relates to a bolt or a stud, in particular to a self-tightening bolt or a self-tightening stud, which belongs to the technical field of general machinery. Background technique [0002] With the vigorous development of mechanical devices in our country, the mechanical mechanisms in many mechanical devices need to be assembled in a replaceable form. Bolts and nuts are the most widely used detachable fastening devices. The application of the detachable fastening device can greatly reduce the production difficulty of the mechanical device and improve the repair efficiency of the mechanical device. [0003] In practical applications, there are many high-frequency vibration conditions in the use scene of bolt and nut fastening devices. Under the high-frequency vibration conditions, ordinary bolt and nut devices are especially used on high-speed railway car bodies. , there will be loosening. It causes great hidden danger to production and con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B39/284F16B35/04
CPCF16B35/044F16B39/284
Inventor 朱振武朱志胤
Owner 朱志胤
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