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Self-locking bolt or stud and nut fastening device

A fastening device and nut technology, applied in the field of fastening devices, bolts, nut fastening devices, nut fastening devices or self-tightening studs, can solve the problems of loose bolts and nuts, affecting work efficiency, waste, etc.

Active Publication Date: 2019-04-23
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-locking bolt or stud and nut fastening device
  • Self-locking bolt or stud and nut fastening device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0102] According to a first embodiment of the present invention, a self-tightening bolt and nut fastening device is provided:

[0103] A self-tightening bolt and nut fastening device, the device includes: a bolt 1, a nut 2; the nut 2 is assembled with the bolt 1 through a threaded structure; the bolt 1 includes: a bolt body 101, a bolt head 102, a tightening Part 4, external thread structure 5; the bolt head 102 is arranged at one end of the bolt body 101; the tightening part 4 is arranged at the other end of the bolt body 101; the external thread structure 5 is arranged at the tightening part 4 The outer surface of the nut 2 includes: a nut body 201, a nut through hole 202, and an internal thread structure 203; the nut through hole 202 is disposed on the nut body 201; the internal thread structure 203 is disposed on the On the inner wall of the nut through hole 202; the tightening part 4 includes: a warping body 401 and a deformation pretension seam 402; the tightening part 4...

Embodiment 1

[0131] A self-tightening bolt and nut fastening device, the device includes: a bolt 1, a nut 2; the nut 2 is assembled with the bolt 1 through a threaded structure; the bolt 1 includes: a bolt body 101, a bolt head 102, a tightening Part 4, external thread structure 5; the bolt head 102 is arranged at one end of the bolt body 101; the tightening part 4 is arranged at the other end of the bolt body 101; the external thread structure 5 is arranged at the tightening part 4 The outer surface of the nut 2 includes: a nut body 201, a nut through hole 202, and an internal thread structure 203; the nut through hole 202 is disposed on the nut body 201; the internal thread structure 203 is disposed on the On the inner wall of the nut through hole 202; the tightening part 4 includes: a warping body 401 and a deformation pretension seam 402; the tightening part 4 is divided into a plurality of warping bodies 401 by the deformation pretension seam 402; The outer circumference of the warpin...

Embodiment 2

[0133] Repeat Example 1, except that the internal diameter of one end of the internal thread structure 203 is D5, and the internal diameter of the other end of the internal thread structure 203 is D6; and D5>D6; the internal diameter of the internal thread structure 203 is from D5 at one end to the other end The D6 gradually becomes smaller and excessive.

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Abstract

The invention discloses a self-locking bolt and nut fastening device or a self-locking stud and nut fastening device. The self-locking bolt and nut fastening device comprises a bolt and a nut. The bolt comprises a bolt body, a bolt head and a tightening portion. The self-locking stud and nut fastening device comprises a stud and a nut. The nut and the stud are assembled through a threaded structure. The stud comprises a stud body, a tightening portion and an external thread structure. The tightening portion comprises outward-warped bodies and a deformation pre-stress seam and is divided into the multiple outward-warped bodies through the deformation pre-stress seam. The parts of the ends, close to the bolt head, of the outward-warped bodies are attached to each other. The parts of the ends, away from the bolt head, of the outward-warped bodies are separated. According to the scheme, through the outward-warped bodies on the tightening portion, after being screwed into the bolt or the stud, the nuts continuously bear force in the direction that the nut is assembled in the bolt or the stud, and therefore the self-locking effect of the nut in the vibration process is achieved, and durability of the fastening device is improved.

Description

technical field [0001] The invention relates to a fastening device, in particular to a bolt and nut fastening device or a self-tightening stud and nut fastening device, belonging 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 hid...

Claims

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Application Information

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IPC IPC(8): F16B39/282F16B39/284
CPCF16B39/282F16B39/284
Inventor 朱振武朱志胤
Owner 朱志胤
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