A single-sided bolt fastener in a reversed form

A technology of unilateral bolts and deformed parts, which is applied in the direction of connecting components, pins, mechanical equipment, etc., can solve the problems that bolts and nuts can not be used to connect fastening methods, the mechanical properties of bolt rods weaken, and cannot be operated on both sides, etc., to achieve easy The effect of simple and fast implementation and installation and simple structure
CN103967902BInactive Publication Date: 2016-01-20TONGJI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TONGJI UNIV
Publication Date
2016-01-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an overturn deforming type unilateral bolt fastener which is formed by a bolt, a jacking sleeve, an overturn deforming piece, a gasket and a nut. A bolt head and a bolt rod are in circular conical surface transition, threads are arranged at the tail of the bolt rod, and the overturn deforming piece is an annular part with certain plastic deformability. The overturn deforming piece, the jacking sleeve and the gasket are arranged on the bolt rod in a sleeved mode, and the nut is screwed at the tail of the bolt rod. In the mounting process, one side of the bolt head is stretched into a mounting hole, the operation of screwing the nut at the tail of the bolt rod is started after the bolt head reaches the inner side of the mounting hole, the nut is screwed in continually to push the jacking sleeve to move forward, the overturn deforming piece overturns in the same direction and has corresponding deformation under the dual action of the jacking sleeve and the circular conical surface of the bolt head, the effect of radial expansion is achieved, in this way, the overturn deforming piece is made to directly act on the inner side surface of the mounting hole, and the unilateral connection and fastening of a structural piece are achieved. According to the overturn deforming type unilateral bolt fastener, unilateral operation can be achieved, the connection and fastening of the structural piece can be completed, and good mechanical properties can be achieved.
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Description

technical field

[0001] The invention relates to a unilateral bolt fastener of a reversed form that can be used for unilateral installation in the connection and fastening operation of structural parts, and belongs to the technical fields of civil engineering and mechanical assembly. Background technique

[0002] At present, in the field of civil construction and mechanical installation, there is a large demand for the installation of structural connection and fastening. As far as the currently commonly used bolts are concerned, when connecting and tightening components, workers need to work on both sides of the component at the same time, that is, insert bolts with nuts on one side, and then use tools to tighten the nuts on the other side. . This connection and fastening method is simple in structure, convenient in operation, and good in load bearing, but it is only suitable for open-section members. , it is impossible to use this common bolt-and-nut connection and tighten...

Claims

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