Turnover unilateral bolt fastener

Abstract

The invention relates to a turnover unilateral bolt fastener. The fastener comprises a round head bolt, and a turnover gasket assembly, a sleeve, a washer and a nut which sequentially sleeve the roundhead bolt along the axial direction of the round head bolt, wherein the turnover gasket assembly comprises a turnover cooperating body, and a plurality of turnover gaskets which are evenly distributed on the turnover cooperating body along the circumferential direction of the turnover cooperating body and are rotatably connected with the turnover cooperating body; the turnover gaskets are matchedwith the sleeve. Compared with the prior art, the turnover unilateral bolt fastener adopts a design of a special structure comprising the turnover gaskets, the turnover cooperating body and the sleeve, and the inclined plane of the sleeve is matched with the inclined planes of the gaskets, so that the turnover gaskets are enabled to accurately overturn during work, and installation failure is avoided; the turnover unilateral bolt fastener can realize rapid and accurate unilateral fixed connection by means of the overturning moment of the plurality of turnover gaskets, and the problem of boltmounting failure under certain special working conditions is solved; furthermore, the turnover unilateral bolt fastener is simple and reliable in installation process, convenient to disassemble, reusable, good in mechanical properties and large in bearing capacity.

Description

technical field [0001] The invention belongs to the technical field of unilateral bolts, and relates to a flip-type unilateral bolt fastener. Background technique [0002] In the field of civil engineering and mechanical installation, the demand for connection and fastening of structural parts is increasing. As far as bolts are commonly used at present, when performing connection and fastening operations on components, workers need to work on both sides of the component at the same time, that is, insert a bolt with a nut on one side, and then use a tool to tighten the nut on the other side . This connection and fastening method is simple in structure, easy to operate, and good in load, but it is only suitable for open section members. When it is fixed, this commonly used bolt and nut connection and fastening method cannot be used. For example: in the steel pipe structure and steel pipe concrete structure, at the joint of the beam column, because the steel pipe column is a...

AI Technical Summary

Problems solved by technology

Although this fastener can solve the problem of complex installation and positioning of nested unilateral fasteners, due to its own structural problems, the two ends of each gasket are respectively pressed between the end surface of the bolt and the end surface of the sleeve during actual installation. As a result, the gasket is often pressed by the end face of the bolt and cannot be turned over correctly, which affects the installation and use of the fastener

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