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Anti-retraction and anti-loosening combined nut

A combined nut and anti-retraction technology, which is applied in the direction of nuts, screws, bolts, etc., can solve the problems of loose connection of bolts and nuts

Active Publication Date: 2021-04-23
ZHEJIANG RONNIE PRECISION MACHINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In a working environment subject to high-strength impact loads, high-strength alternating loads, and severe temperature changes, the bolt-nut connection will have self-loosening problems

Method used

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  • Anti-retraction and anti-loosening combined nut
  • Anti-retraction and anti-loosening combined nut
  • Anti-retraction and anti-loosening combined nut

Examples

Experimental program
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Embodiment Construction

[0021] see Figure 1 to Figure 8 The present invention is a combination nut with anti-backoff and anti-loosening, comprising a first nut body 1, a second nut body 2, an elastic pressure block 3, a driving washer 4, a back-stop sleeve 5 and an anti-theft protection sleeve 6. The first nut body 1. The second nut bodies 2 are arranged in order from bottom to top, the outer parts of the two are covered with anti-theft protective sleeves 6, and the bottom of the first nut body 1 is provided with a first limit step groove 12 to prevent the anti-theft protective sleeves 6 from coming out , the top of the first nut body 1 is provided with a second annular boss 11, the bottom of the second nut body 2 is provided with an installation groove 22, the back-stop sleeve 5 is arranged in the installation groove 22, the first The two annular bosses 11 abut against and cooperate with the backstop sleeve 5 , and a plurality of backstop cards 52 are arranged at intervals in the circumferential di...

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PUM

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Abstract

The present invention proposes an anti-retraction and anti-loosening combined nut, which includes a first nut body, a second nut body, an elastic pressing block, a driving gasket, a back-stop sleeve and an anti-theft protection sleeve, the first nut body, the second nut body The body is arranged sequentially from bottom to top, and the outer cover of the two is provided with an anti-theft protective cover. The top of the first nut body is provided with a second annular boss, and the bottom of the second nut body is installed with a backstop sleeve. The second annular boss abuts against the anti-retraction sleeve. Under the abutting action of the second annular boss, the anti-retreat card of the anti-retraction sleeve shrinks radially inward. The bottom of the first nut body is equipped with an elastic A pressure block, a first annular boss is provided above the driving gasket, and the first annular boss is squeezed and fitted with the elastic pressure block, and the elastic pressure block is deformed under the extrusion action of the first annular boss . It can ensure that the nuts installed on the bolts will not loosen under various harsh working environments such as frequent vibration and load changes.

Description

technical field [0001] The invention relates to the technical field of fasteners, in particular to a combination nut for preventing backlash and loosening. Background technique [0002] At present, bolt and nut connection is a very common connection method in the field of mechanical technology, and it is widely used in the fields of automobile, aerospace, rail transit and production equipment manufacturing. In the working environment subjected to high-intensity shock loads, high-intensity alternating loads and drastic changes in temperature, the bolt-nut connection will have the problem of self-loosening. Anti-looseness of bolted connection is a very important link in the field of mechanical engineering. Now a combination nut for preventing backlash and anti-looseness is proposed. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to solve the problems in the prior art, and propose a combination nut for preventing and loosening, which ensures that t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16B39/284F16B41/00
CPCF16B39/284F16B41/005
Inventor 唐旭文
Owner ZHEJIANG RONNIE PRECISION MACHINE