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Anti-loosening expansion bolt

An expansion bolt and anti-loosening technology, which is applied in the direction of connecting components, pins, washers, etc., can solve problems such as loosening and unreliable fixing, and achieve the effects of increasing anti-vibration ability, protecting self-locking performance, and prolonging service life

Pending Publication Date: 2021-01-19
杨磊
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But its fixation is not very reliable, if the load has a large vibration, it may loosen;

Method used

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  • Anti-loosening expansion bolt
  • Anti-loosening expansion bolt
  • Anti-loosening expansion bolt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0030] Such as Figure 1-6 As shown, the nut 1 is threadedly linked with the countersunk head bolt 2, and the spring washer 3 and the flat washer 4 are arranged and installed between the nut 1 and the expander 5 to increase the friction between the stud and the external fixture, and The contact area between the nut 1 and the surface of the external fixing part is increased, and the damage of the bolt to the surface of the external fixing part is eliminated;

[0031] One end of the expansion cylinder 5 is in contact with the flat washer 4, and the other end is in contact with the surface of the large head at the bottom of the countersunk bolt 2. The diameter of the expansion cylinder 5 is smaller than the diameter of the large head at the bottom of the countersunk bolt 2. The expansion cylinder 5 is provided with an expansion port near the bottom Groove, when the nut 2 is locked, the countersunk bolt 2 moves upward, and the bottom of the expansion cylinder 5 is squeezed by the ...

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PUM

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Abstract

An anti-loosening expansion bolt comprises a nut, a countersunk bolt, a spring gasket, a flat gasket, an expansion cylinder, a transmission part, a cooperating boss, a compression spring, a guide telescopic column, an extending part and a sliding way. According to the anti-loosening expansion bolt, extending and fixing of the extending part can be completed through cooperation of the transmissionpart, the compression spring and the countersunk bolt, expansion fixing to the expansion cylinder can be completed through fixing of the countersunk bolt by the nut, the extending part and the expansion cylinder are fixed separately and are self-locked mutually, and the stability of the expansion bolt is greatly improved; and the problem that the expansion bolt loosens due to ground vibration andother reasons is solved, the service life of the expansion bolt is prolonged, and the expansion bolt is more practical.

Description

technical field [0001] The invention relates to the technical field of bolts and fasteners, in particular to an anti-loosening expansion bolt. Background technique [0002] Expansion bolt is a special threaded connection used to fix pipeline support / hanging / bracket or equipment on the wall, floor, and column; the fixing principle of the expansion screw: the expansion screw is fixed by using the pull-shaped oblique It can be used to promote the expansion to produce friction and grip force to achieve the fixing effect; it is generally used for the fastening of guardrails, awnings, air conditioners, etc. on cement, bricks and other materials. But its fixation is not very reliable, if the load has a large vibration, it may loosen; [0003] In view of the above problems, the present invention provides an anti-loosening expansion bolt, through the cooperation of transmission parts, compression springs and countersunk bolts, the extension and fixation of the protruding parts can b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B13/06F16B43/00
CPCF16B13/06F16B43/00
Inventor 杨磊
Owner 杨磊