Double-nut same-diameter forward and reverse bidirectional compound thread anti-loosening anti-theft self-locking bolt

A double-nut, two-way technology, applied in the direction of nuts, bolts, threaded fasteners, etc., can solve the problems of cumbersome structure, poor safety and economy, and insufficient strength of anti-loosening bolts, and achieve low production cost, low weight, and convenient operation , the effect of simple structure

Pending Publication Date: 2020-04-10
封国玉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] For this reason, the present invention provides anti-loosening and anti-theft self-locking bolts with double nuts of the same diameter, positive and negative two-way composite threads, to solve the problem of the cumbersome structure of the anti-loosening bolts in the prior art, low reliability, insufficient strength, poor safety and economic efficiency. and so on

Method used

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  • Double-nut same-diameter forward and reverse bidirectional compound thread anti-loosening anti-theft self-locking bolt
  • Double-nut same-diameter forward and reverse bidirectional compound thread anti-loosening anti-theft self-locking bolt
  • Double-nut same-diameter forward and reverse bidirectional compound thread anti-loosening anti-theft self-locking bolt

Examples

Experimental program
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Effect test

Embodiment 1

[0045] Such as Figure 1-4 As shown, the embodiment of the present invention provides a self-locking bolt with double nuts with the same diameter forward and reverse bi-directional compound threads for anti-loosening and anti-theft, including a nut 1, a bolt shank threaded portion 2, and a tightening screw threaded with the bolt shank threaded portion 2 respectively. The fastening nut 3 and the locking nut 4, as well as the positioning and anti-loosening assembly arranged between the fastening nut 3 and the locking nut 4, are used for simple anti-reversal design, that is, the threaded part 2 of the bolt rod with the same diameter is simultaneously provided with Two left-handed and right-handed threads allow nuts with different rotation directions to pass through smoothly. The two threads of the fastening nut 3 and the lock nut 4 with opposite rotation directions are superimposed on the same bolt with the same diameter. The direction is different, the loosening force of the fas...

Embodiment 2

[0056] In embodiment 2, for the same structure as in embodiment 1, give the same symbol, omit the same description, embodiment 2 has made improvement on the basis of embodiment 1, as Figure 5-6 As shown, the positioning and anti-loosening assembly includes a lower anti-backward sawtooth groove 31, an upper anti-backward sawtooth groove 42 and a positioning block 6, and the upper anti-backward sawtooth groove 42 is arranged on the side of the lock nut 4 near the nut 1 along a ring. The inner ring of the upper end face, and the upper anti-reversal sawtooth groove 42 is vertically corresponding to the lower anti-reversal sawtooth groove 31 on the fastening nut 3, forming a circular cavity space together. The anti-reversal direction of the upper anti-reversal sawtooth groove 42 is opposite to that of the lower anti-reversal sawtooth groove 31 .

[0057] The positioning block 6 is arranged in the annular cavity formed by the lower anti-backward sawtooth groove 31 and the upper ant...

Embodiment 3

[0060] In embodiment 3, for the same structure as in embodiment 1, the same symbols are given, and the same description is omitted. Embodiment 3 is improved on the basis of embodiment 1. The lower anti-backlash groove 31 The teeth adopt positive angle teeth, and the slope angles on both sides of the positive teeth are 45°, so that when the U-shaped steel wire 5 elastically abuts against the lower anti-reverse saw tooth groove 31, it can effectively prevent natural loosening and vibration. , It can also be easily disassembled under the action of external traditional tools, which realizes the practical requirement of secondary utilization of anti-loosening bolts, and solves the technical problem that the existing anti-loosening bolts cannot be disassembled and reused.

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Abstract

The invention discloses a double-nut same-diameter forward and reverse bidirectional compound thread anti-loosening anti-theft self-locking bolt, which belongs to the technical field of mechanical fastening pieces. The technical scheme key point of the bolt is that the bolt comprises a bolted cap and a bolt bar thread end, wherein the bolted cap and the bolt bar thread end are subjected to integral manufacture and forming; the bolt bar thread end is independently subjected to screw joint and compounding with a fastening nut and a locking nut, and the fastening nut and the locking nut have opposite thread rotation directions; a positioning anti-loosening component is arranged between the fastening nut and the locking nut and comprises a first spacing structure and a second spacing structure, wherein the first spacing structure is arranged on a traditional threaded section on the fastening nut, and the second spacing structure is arranged near a threaded section end surface on the locking nut; and a connecting and clamping structure is arranged between the first spacing structure and the second spacing structure. By use of the device, on a premise that no weight is added, the integral intensity and stability of the bolt can be improved, and the practical requirements of low-cost powerful loosening prevention, theft prevention and eradication of a situation that the bolt works around the clock can be realized. The bolt disclosed by the invention has a simple and reliable structure, is convenient in operation, has a simple processing technology and is suitable for using for standardized production, and the product cost of the bolt disclosed by the invention is lower than the production cost of a Down bolt.

Description

technical field [0001] The invention relates to the technical field of mechanical fasteners, in particular to a series of anti-loosening and anti-theft self-locking bolts with double nuts of the same diameter, positive and negative bidirectional composite threads. Background technique [0002] At present, due to the continuous vibration of the equipment, the bolt structure is likely to cause the fixed equipment to loosen, which in turn causes problems such as equipment failure and accidents. However, the diameter of the existing Tang’s anti-loosening bolts is variable cross-section and discontinuous, so the overall strength of the bolt is insufficient, easy to break and difficult to process; the existing anti-loosening bolts have complex / complex / unreliable structure / many parts / heavy weight / The cost is high and there are various disadvantages and deficiencies that are not easy to produce in large quantities. [0003] There are four ways to prevent loosening of threaded fast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B33/02F16B35/04F16B39/10F16B39/14F16B39/20F16B39/26F16B39/282
CPCF16B33/02F16B35/041F16B39/10F16B39/14F16B39/20F16B39/26F16B39/282F16B2033/025
Inventor 封国玉
Owner 封国玉
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