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Folding gasket type unilateral bolt fastener

A technology of folding gaskets and unilateral bolts, which is applied in the direction of threaded fasteners, screws, washers, etc., can solve the problems of unsatisfactory comprehensive performance, small stress point of the bolt head, complicated installation, etc., and achieve good fastening effect , Improve the fastening effect and make the effect of convenience

Pending Publication Date: 2020-01-14
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there is no such unilateral bolt product in the domestic market, and the unilateral bolt products that have been disclosed at present either have too small stress points on the bolt head, or are complicated to install, and their comprehensive performance is not very ideal. The application is very limited

Method used

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  • Folding gasket type unilateral bolt fastener
  • Folding gasket type unilateral bolt fastener
  • Folding gasket type unilateral bolt fastener

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Embodiment Construction

[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] Such as figure 1 A folded one-sided bolt fastener is shown, which is used to fix the connecting piece 9 . The fastener includes a round head nut 5 , a screw 1 , and a folded washer assembly 4 , a sleeve 2 , a washer 7 and a nut 8 sleeved on the screw 1 in sequence.

[0032] Such as figure 2 As shown, the inside of the sleeve 2 is hollow, the wall thickness of the sleeve 2 is not more than 5 mm, the outer diameter of the sleeve 2 is smaller than the inner diameter of the connector mounting hole 10, and the inner diameter of the sleeve 2 is the same as the outer diameter of the screw 1 Adaptation, the surface of one end of the sleeve 2 close to the folded gasket assembly 4 is evenly provided with several protrusions 3 according to the circumference. In this embodiment, the surface of the sleeve is provided with six protrusions...

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Abstract

The invention discloses a folding gasket type unilateral bolt fastener. The unilateral bolt fastener comprises a round head screw nut and a screw rod, and a folding gasket assembly, a sleeve, a gasketand a nut which are sequentially sleeved on the screw rod, wherein a plurality of protrusions are uniformly arranged on the surface of one end of the sleeve in a circumferential manner, the folding gasket assembly comprises a plurality of first-layer folding gaskets close to the sleeve and a plurality of second-layer folding gaskets close to the round head screw nut, one ends of the first-layer folding gaskets are connected with the protrusions on the sleeves through connecting hinges A, and the other ends of the first-layer folding gaskets are connected with the second-layer folding gasketsthrough connecting hinges B. Compared with the prior art, the folding gasket assembly is added, meanwhile, the connecting hinges of the first-layer folding gaskets and the second-layer folding gasketsare provided with frictional resistance, the two layers of the folding gaskets form a certain angle, so that the folding gaskets can be folded normally during working, and installation failure is avoided. The unilateral bolt fastener solves the problem of unilateral fastening, is simple in principle, safe, reliable, good in mechanical property and convenient to install.

Description

technical field [0001] The invention belongs to the field of fastening components, and relates to a unilateral bolt, in particular to a folded washer type unilateral bolt fastener. Background technique [0002] In the field of civil engineering and mechanical installation, there is an increasing demand for the connection and fastening of structural parts. As far as bolts are commonly used at present, when performing connection and fastening operations on structural parts, the staff need to be on both sides of the structure at the same time. Side work, that is, insert a bolt with a nut on one side, and then tighten the nut with a tool on the other side. This connection fastening method is simple in structure, easy to operate, and has good bearing capacity, but it is only suitable for open sections. In some special occasions, such as connecting and fastening closed-section components or components that are inconvenient to operate on the other side, this commonly used bolt-nut ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B35/00F16B43/00F16B1/00
CPCF16B35/00F16B43/00F16B1/00F16B2200/83
Inventor 常鸿飞张小威王冠凯江峰李硕王玉龙
Owner CHINA UNIV OF MINING & TECH
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