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Double-nut locking mechanism

A locking mechanism and double nut technology, applied in the direction of nuts, threaded fasteners, locking fasteners, etc., can solve the problems of loose nuts and low probability of loosening, achieve enhanced stability and avoid premature loosening Effect

Active Publication Date: 2015-04-08
国网福建省电力有限公司明溪县供电公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Although this can reduce the probability of nut loosening (the probability of synchronous loosening of two nuts that are close together due to the influence of external mechanical disturbances is lower than the probability of loosening of a single nut), long-term use will still cause nuts to loosen.

Method used

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Embodiment Construction

[0018] Below in conjunction with accompanying drawing and embodiment the technical solution of the present invention is further described:

[0019] The double-nut locking mechanism of the present invention includes a bolt 1 and a first nut 4 and a second nut 3 threadedly connected to the tail end of the bolt 1, wherein the second nut 3 is arranged between the first nut 4 and the bolt head 2, and the second nut 3 Between the two nuts 3 and the bolt head 2 is a plate 10 that needs to be clamped and fixed.

[0020] The double-nut locking mechanism of the present invention also includes an outer sleeve 5 and an inner sleeve 6, the axes of the inner and outer sleeves 5 are consistent, and the inner sleeve 6 is fixedly connected to the upper end of the outer sleeve 5; The upper end of the inner sleeve 6 abuts against the first nut 4 , and the lower end of the inner sleeve 6 abuts against the second nut 3 .

[0021] The middle part of the inner sleeve 6 has a hole, the size of the h...

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Abstract

The invention discloses a door mounting fastener and particularly relates to a double-nut locking mechanism. The double-nut locking mechanism comprises a bolt, a first nut and a second nut, the first nut is in threaded connection with the bolt, and the second nut is arranged between the first nut and the head of the bolt. The double-nut locking mechanism further comprises an outer sleeve and an inner sleeve, axes of the inner and outer sleeves are uniform, and the inner sleeve is fixedly connected to the upper end of the outer sleeve; the upper end of the inner sleeve is abutted against the first nut, and the lower end of the inner sleeve is abutted against the second nut. The double-nut locking mechanism further comprises an annular hoop which comprises an outer ring and a group of convex teeth, the convex teeth are formed on the inner periphery of the outer ring and all abutted against the lateral side of the second nut, and the annular hoop is fixedly arranged on the inner wall of the outer sleeve. The double-nut locking mechanism has the advantages that the defect of proneness to loosing of nuts in the prior art is overcome, and stability in connection between the bolt and the nuts can be improved.

Description

technical field [0001] The invention relates to a door body installation fastener, in particular to a double-nut locking mechanism. Background technique [0002] Bolt connection is a detachable connection made of threaded parts. It has a simple structure and is easy to assemble and disassemble. It is widely used in various mechanical equipment. However, under the action of shock, vibration or variable load, or under the condition of high temperature or large temperature change, the pretightening force and friction force in the bolted connection will gradually decrease or may disappear instantaneously, resulting in failure of the connection. Once the bolt connection fails, it will seriously affect the normal operation of the machine and even cause accidents. [0003] In order to solve the above problems, a bolt structure with double nuts is provided in the prior art, that is, another nut is installed under the original nut to prevent the original nut from moving down. Altho...

Claims

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Application Information

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IPC IPC(8): F16B5/02F16B39/32
CPCF16B5/02F16B39/105F16B39/12
Inventor 刘侃
Owner 国网福建省电力有限公司明溪县供电公司
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