Whole overturning single-edge bolt fastening piece

Abstract

The invention relates to a whole overturning single-edge bolt fastening piece for performing single-edge fastening installation for a connecting plate piece (5). The whole overturning single-edge bolt fastening piece is characterized by comprising a bolt (1), a sleeve component (2), a nut (3) and a whole washer (4); the sleeve component (2) includes multiple split washers (2a) and a sleeve (2b); inclined surfaces are respectively arranged at the head parts of all the split washers (2a); and the root parts of all the split washers (2a) are respectively connected with the sleeve (2b) to form a rotating friction pair. Compared with the prior art, the designed combination of the split washers and the sleeve with a special form is installed together, and can bear greater force, so that the mechanical performance is enhanced; and the bolt connecting and fastening operation can be finished by only needing one-side operation, so that the bolt installation under several special working conditions is finished.

Description

technical field [0001] The invention relates to a tool for unilateral fastening and installation of structural parts, which belongs to the technical fields of civil engineering and mechanical assembly, and in particular relates to an integral flip-type unilateral bolt fastener. Background technique [0002] At present, in the field of civil engineering and mechanical installation, there is a large demand for the installation of connection and fastening of structural parts. 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 components at the same time. This connection and fastening method has simple structure, convenient operation and good load bearing, but it is only suitable for open cross-section components. In some special occasions, such as connecting and fastening closed cross-section components or components that are inconvenient to operate on the other side , it is...

AI Technical Summary

Problems solved by technology

This connection and fastening method has simple structure, convenient operation and good load bearing, but it is only suitable for open cross-section members. In some special occasions, such as connecting and fastening closed cross-section members or members that are inconvenient to operate on the other side , it is impossible to use this commonly used bolt and nut connection fastening method

At present, there is no corresponding unilateral bolt product in the domestic market, and the published related patents either weaken the bolt shank too much or the stress points of the bolt head are too few. There are similar products in foreign markets, but the above-mentioned existing patents or products It is difficult to apply a large pre-tension force to the bolts during the installation stage to form a friction-type bolted joint, and its comprehensive mechanical properties under load are not ideal, which is greatly restricted in the application of seismic design of building structures

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