A plate-shaped bending type split unilateral bolt fastener installation tool

Abstract

The invention relates to a plate-shaped bending type split single-side bolt fastener mounting tool which is used for mounting a single-side bolt fastener. The single-side bolt fastener comprises a round head bolt, a deformation shrinkage self-recovery split gasket, a sleeve, a gasket and a nut, wherein the deformation shrinkage self-recovery split gasket, the sleeve, the gasket and the nut are sequentially arranged on the round head bolt in a sleeving mode in the axial direction. The mounting tool comprises an operation handle and an ejector pin arranged on the operation handle. The mounting tool further comprises a threaded head. One end of the threaded head is hinged to the head of the operation handle, and the other end of the threaded head is fixedly connected with the round head bolt.The operation handle is matched with the threaded head, so that the mounting tool is in a straight handle state or a bent state. Compared with the prior art, the plate-shaped bending type split single-side bolt fastener mounting tool has the advantages of being convenient to mount, high in adaptability and the like.

Description

technical field [0001] The invention relates to the technical fields of civil engineering and mechanical assembly, in particular to a plate-shaped bending type split unilateral bolt fastener installation tool. 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 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 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 ...

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

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 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

[0003] The Chinese patent with the patent application publication number CN 108571505A discloses a deformation shrinkage self-healing split type unilateral bolt fastener and its installation tool. In this application, the round head bolt is sent into the installation hole through the installation tool and then continues to pass through the thimble Push inward the deformation and shrinkage self-returning split gasket, but the tool disclosed in this application still has some defects. The necessary installation distance in the axial direction inside the installation hole is greater than the length of the round head bolt and the deformation and shrinkage self-recovering split gasket. The sum of the lengths after pinching and flattening can not complete the installation of unilateral bolt fasteners when facing the installation situation with limited axial distance, such as narrow square tube connection. At the same time, the position of the thimble cannot be changed, which further limits the installation tool. flexibility of use

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