Improved unilateral bolt fastener convenient to assemble and disassemble

Abstract

The invention discloses an improved unilateral bolt fastener convenient to assemble and disassemble. The improved unilateral bolt fastener comprises a round head bolt, a ring sleeve, a plurality of elastic bodies, a plurality of blocking bodies, a compression sleeve, a fastening body, a plurality of rod bodies, a plurality of inserting slots, a plurality of rubber sleeves, an annular groove and an annular rubber body, wherein the rod bodies of the round head bolt are sequentially sleeved with the fastening body, the slidable compression sleeve and the slidable ring sleeve which are connected in a threaded manner from front to back, the fastening body and the compression sleeve are rotationally connected together, the annular groove is formed in the fastening body, the annular rubber body is arranged in the annular groove, and the outer diameter of the annular groove is larger than that of the fastening body; and the rod bodies are arranged at the front end of the ring sleeve, the inserting slots in one-to-one correspondence with the rod bodies are formed in the rear end of the compression sleeve, the rubber sleeves are arranged in the inserting slots, the rod bodies are inserted into the rubber sleeves, and the inner diameters of the rubber sleeves are slightly smaller than the inner diameters of the rod bodies. Compared with the prior art, the improved unilateral bolt fastener convenient to assemble and disassemble has the advantages that the unilateral fastening can be carried out, and the improved unilateral bolt fastener can be conveniently dismounted and mounted according to the requirement and can be repeatedly used.

Description

【Technical field】 [0001] The invention relates to an improved unilateral bolt fastener which is easy to assemble and disassemble, and belongs to the technical fields of civil engineering and mechanical assembly. 【Background technique】 [0002] As far as ordinary bolts composed of screws and nuts are commonly used at present, when performing fastening operations, it is necessary to insert the screw on one side and clamp the nut, and then tighten the nut with a tool on the other side. Installers work on both sides of the member at the same time. However, compared with the installation of more common open-section components, such commonly used bolts are inconvenient to use for components such as closed-section components and components that are inconvenient to access one side. For example, in steel pipe concrete structures, beam-column joints, etc., because the column sections are mostly closed sections, ordinary bolts cannot be operated on both sides, so ordinary methods cann...

AI Technical Summary

Problems solved by technology

However, compared with the installation of more common open-section components, such commonly used bolts are not convenient to use for components such as closed-section components and components that are inconvenient to access one side.

For example, in steel pipe concrete structures, beam-column joints, etc., because the column sections are mostly closed sections, ordinary bolts cannot be operated on both sides, so ordinary methods cannot be installed.

Ordinary expansion one-way bolts are difficult to apply the bolt pre-tightening force, and the fastening effect cannot meet the design requirements under large loads

However, the core-through bolts in the prior art have particularly high requirements for the reserved accuracy of the bolt holes, and it is difficult to install on site, and it is difficult to apply at the joints of side columns and corner columns.

However, the existing unilateral bolts are not suitable for large-span or large-load structures, and require more complicated installation tools and more cumbersome installation steps

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