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Expansion bolt

A technology of expansion bolts and bolt bodies, which is applied in the direction of connecting components, pins, mechanical equipment, etc., can solve the problems of poor reliability, difficult removal of expansion bolts, weak strength, etc., and achieve good expansion effect, strong fastening force, and easy installation quick and easy effect

Inactive Publication Date: 2012-07-11
JIANGSU ZHENYA SPECIAL SCREW
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of expansion bolt has the following defects: 1. The end of the expansion tube is in a hollow state, with weak strength and poor reliability; The expansion bolts are often left in the building

Method used

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Comparison scheme
Effect test

Embodiment Construction

[0016] See attached figure 1 The expansion bolt of this embodiment includes a bolt body 1, an expansion sleeve 2 and a washer 9. The end of the expansion sleeve 2 is fixed with a nut 3 that matches the bolt body 1. The expansion sleeve 2 There are five slotted holes 5 along the axial direction in the middle part, and the middle part of the slotted holes 5 is expanded to both sides with grooves 7; the other end of the expansion sleeve 2 is fixedly connected with a flat washer 4 , the surface of the flat washer 4 corresponding to the expansion sleeve 2 is provided with nails 8; the slots 5 are distributed symmetrically; the outer surface of the expansion sleeve 2 is provided with strip-shaped protrusions 6.

[0017] When the nut 3 is locked with the bolt body 1, under the action of the axial extrusion force, the expansion sleeve 2 will have a radial displacement at its weak point. Since the inner wall of the expansion sleeve 2 is hindered by the bolt body 1, the expansion sleeve...

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PUM

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Abstract

The invention discloses an expansion bolt, which comprises a bolt body, an expansion sleeve and a gasket, wherein a nut matched with the bolt body is fixedly connected with the interior of the tail end of the expansion sleeve, four to six groove holes along the axial direction are arranged in the middle of the expansion sleeve, and the middles of the groove holes expand towards two sides to be provided with grooves. The expansion bolt has the advantages of being good in expansion effect, strong in fastening force, good in reliability, fast and convenient to install, convenient to demount, capable of being reused and the like.

Description

technical field [0001] The invention relates to a connecting piece, in particular to an expansion bolt. Background technique [0002] An existing expansion bolt includes a bolt and an expansion sleeve. The end of the bolt has a protrusion, the inner surface of the expansion sleeve is formed with an internal thread that matches the bolt, and the end of the expansion sleeve is provided with an open seam. When the nut is tightened, the protruding part of the bolt will stretch the opening seam of the expansion sleeve, so that the expansion bolt and the connecting body (wall, plate body) will be tightened to form a whole. This kind of expansion bolt has the following defects: 1. The end of the expansion tube is in a hollow state, with weak strength and poor reliability; Expansion bolts are often left in the building. Contents of the invention [0003] The purpose of the present invention is to provide an expansion bolt with good expansion effect and easy removal of the bo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B13/06
Inventor 杭汉林邢健
Owner JIANGSU ZHENYA SPECIAL SCREW
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