A push-and-turn type unilateral bolt fastener with positioning buckle

Abstract

The invention discloses a positioning buckle push-turn type unilateral bolt fastener, which comprises a round head bolt and a positioning buckle push-turn type gasket assembly which is sequentially sleeved on the round head bolt in the axial direction, Sleeve assembly, washer and nut, positioning buckle push-turn gasket assembly includes gasket matching body and a plurality of positioning buckle push-turn gaskets evenly arranged along the circumference of the gasket matching body, positioning buckle push-turn There is an arc-shaped protrusion on the type gasket. The sleeve assembly includes a sleeve body and a plurality of sleeve gaskets evenly arranged along the circumference of the sleeve body. The sleeve gasket is equipped with an arc-shaped protrusion. The arc-shaped groove, when fastened, the arc-shaped protrusion engages with the arc-shaped groove concave-convex and turns outward synchronously. The fastener can achieve fast and accurate unilateral fixed connection through the flipping motion of multiple positioning buckle push-turn gaskets and sleeve gaskets, and the installation process is simple and reliable, easy to disassemble, reusable, and has relatively high mechanical properties. Well, it can bear a large bearing capacity.

Description

technical field [0001] The invention relates to the technical field of unilateral bolts, in particular to a positioning buckle push-and-turn unilateral bolt fastener. Background technique [0002] At present, in the field of civil engineering and mechanical installation, the installation demand for the connection and fastening of structural parts is increasing. But as far as the bolts commonly used at present are concerned, when the components are connected and fastened, the staff needs to work on both sides of the components at the same time, that is, insert the bolts with nuts on one side, and then use tools to tighten the nuts on the other side. Tighten. 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, ...

AI Technical Summary

Problems solved by technology

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, it is impossible to use this commonly used bolt and nut connection fastening method

For example: in the steel pipe structure and the steel pipe concrete structure, at the joint of the beam column, because the steel pipe column is a closed section, it cannot be operated on both sides, and can only be connected and installed on one side, so this commonly used bolt and nut connection fastening method cannot be used For fast installation

At present, there is no corresponding unilateral bolt product in the domestic market, and the published related patents often weaken the bolt shank too much so that the mechanical properties are not ideal, or the installation is inconvenient: there are similar products in foreign markets.

However, it is expensive and difficult to be widely used in China, and it is difficult for this type of product to apply a large pre-tension force to the bolts during the installation stage to form a friction-type bolted joint. The comprehensive mechanical properties of the bearing are not ideal. heavily restricted in

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