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Railway turnout bolt and nut loosening prevention device and loosening prevention method thereof

A bolt and nut technology, applied in the field of railway turnout parts manufacturing, can solve problems such as loosening of horizontal bolts and nuts, and achieve the effects of reducing the cost of the turnout, the anti-loosening effect is remarkable, and the operation is convenient.

Active Publication Date: 2012-08-08
CHINA RAILWAY BAOQIAO (NANJING) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the structural design of the present invention, bolts or nuts are clamped in the twelve-sided anti-loosening piece inside the belt, and the two form a restrictive relationship. After the bolts are installed and fastened, the anti-loosening piece is fixed by a washer and a cotter pin. It can permanently and reliably prevent bolts and nuts from loosening, and effectively solves the problem of horizontal bolts and nuts loosening caused by long-term vibration of train crossings

Method used

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  • Railway turnout bolt and nut loosening prevention device and loosening prevention method thereof
  • Railway turnout bolt and nut loosening prevention device and loosening prevention method thereof
  • Railway turnout bolt and nut loosening prevention device and loosening prevention method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Embodiment 1: with reference to attached figure 1 and 2 , Two-hole anti-loosening mechanism for nuts and bolts: suitable for anti-loosening of two nuts or bolts. A railway turnout nut and bolt anti-loosening device, which is composed of a support frame 1, a nut anti-loosening sheet 2, a flat washer 3 and a cotter pin 4, the support frame 1 is placed under the nut 5, and the nut or bolt is fastened to the support frame 1, The anti-loosening sheet 2 with internal twelve deformations is installed on the bolt or nut and the anti-loosening sheet is installed and fixed by a flat washer 4 and a cotter pin 3 . The anti-loosening sheet 2 with inner twelve deformations is a nut or bolt anti-loosening sheet. The nut or bolt anti-loosening sheet has two holes. The key technology of the nut or bolt anti-loosening mechanism: the inner dodecagon in the nut or bolt anti-loosening sheet cooperates with the six corners of the hexagonal nut or bolt to restrict the rotation of the nut o...

Embodiment 2

[0013] Embodiment 2: with reference to attached image 3 and 4 , Three-hole anti-loosening mechanism for nuts or bolts: suitable for anti-loosening of three nuts or bolts. A railway turnout bolt and nut anti-loosening device, which is composed of a support frame 1, a nut or bolt anti-loosening sheet 2, a flat washer 3 and a cotter pin 4, the support frame 1 is placed under the bolt or nut 5, and the bolt or nut and the support frame 1 Fastening, the anti-loosening sheet with internal twelve deformations 2 is installed on the bolt or nut and the anti-loosening sheet is installed and fixed by the flat washer 4 and the cotter pin 3. The anti-loosening sheet 2 with inner twelve deformations is a nut or bolt anti-loosening sheet. The bolt or nut anti-loosening sheet has three holes. The key technology of the three-hole anti-loosening mechanism for nuts or bolts: the inner dodecagon in the three-hole anti-loosening sheet for nuts or bolts cooperates with the six corners of the he...

Embodiment 3

[0015] Embodiment 3: On the basis of Embodiment 1, a method for anti-loosening of railway turnout bolts and nut anti-loosening devices, the bolt or nut anti-loosening sheet 2 has an inner dodecagon, and the bolt or nut 5 is clamped inside In the dodecagon, the two form a restrictive relationship to limit the rotation of the bolt or nut. The flat washer 3 and the cotter pin 4 fasten the bolt or nut anti-loosening sheet 2 on the support frame 1 to ensure that the bolt or nut anti-loosening sheet 2 and the The bolt or nut 5 is well clamped to prevent the bolt or nut loosening sheet 2 from falling off during use.

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Abstract

The invention relates to a railway turnout bolt and nut loosening prevention device and a loosening prevention method thereof, which can effectively prevent bolts and nuts of a railway turnout from loosening. The device consists of a supporting frame, a bolt or nut loosening prevention sheet, a flat washer and a split pin, wherein the supporting frame is arranged below the bolts or the nuts; the bolts or the nuts are fastened to the supporting frame; and the loosening prevention sheet with an internal dodecagonal deformation part is arranged on the bolts or the nuts and is fixedly arranged through the flat washer and the split pin. The invention has the advantages that: 1, the problem of loosening of the bolts or the nuts, which puzzles the turnout work maintenance department for a long time, is effectively solved through a mechanical bolt and nut loosening prevention mechanism which has a simple structure and is convenient to operate, and the bolts and the nuts can be continuously used during maintenance or after disassembly and adjustment, so that the turnout cost is greatly reduced; 2, the device contributes to durability, safety and less maintenance of the railway turnout; and3, the device has an obvious loosening prevention effect, so the maintenance work load of the turnout work maintenance department can be greatly reduced, and the requirement on rapid development of arailway is met.

Description

technical field [0001] The invention relates to a railway turnout bolt and nut anti-loosening device and anti-loosening method capable of effectively preventing the railway turnout bolts and nuts from loosening, belonging to the field of railway turnout component manufacturing. Background technique [0002] Due to the long-term impact of railway turnouts, bolts and nuts loosen or fall off due to severe vibrations during use, which brings a lot of workload to line maintenance and seriously affects traffic safety. In order to solve the problem of loose bolts and nuts, many scientific research institutes are doing research in various aspects. They have successfully developed various locknuts, but most of the locknuts are disposable. The anti-loosening function will fail, and the turnout needs regular maintenance and maintenance in the long-term application of the line. The practical application effect of the anti-loosening nut is not ideal, and it is not suitable for the laying...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01B7/22
Inventor 毛建平费维周王阿利李文博张海华
Owner CHINA RAILWAY BAOQIAO (NANJING) CO LTD
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