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Expansion stud

A technology of expansion screw and expansion sleeve, which is applied in the field of expansion studs, can solve problems such as poor positioning accuracy, and achieve the effect of improving positioning accuracy

Pending Publication Date: 2022-05-10
舒城嘉恒磁业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention is mainly used to solve the problem of poor positioning accuracy when using bolts or expansion bolts to temporarily locate equipment in the prior art

Method used

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Embodiment Construction

[0037] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0038] Such as Figure 1 to Figure 8 As shown, an expansion stud includes a positioning connection bolt 1, a positioning expansion bolt 2, an expansion sleeve 3 and an expansion tube 4; one end between the positioning connection bolt 1 and the positioning expansion bolt 2 is close to each other Through threaded connection; the other end of the positioning expansion bolt 2 is provided with an expansion head 21; the middle part of the positioning connection bolt 1 is connected to the expansion sleeve 3; the expansion sleeve 3 and the expansion head 21 The expansion tube 4 is arranged in between; the expansion tube 4 is sleeved on the positioning connection bolt 1 and the positioning expansion bolt 2; both ends of the expansion tube 4 are provided wi...

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Abstract

The invention belongs to the technical field of fasteners, and particularly relates to an expansion stud which comprises a positioning connecting bolt, a positioning expansion bolt, an expansion sleeve and an expansion pipe. The distance between the expansion sleeve and the expansion head is gradually reduced by screwing the positioning connecting bolt, the first conical surface is arranged on the expansion head, the second conical surface is arranged on the expansion sleeve, openings are formed in the two ends of the expansion pipe, and then the two ends of the expansion pipe are gradually expanded and expanded through the first conical surface and the second conical surface; as the two ends of the expansion pipe abut against the wall of the hole, the situation that when only one end of the expansion pipe abuts against the wall of the hole, the expansion stud deflects when being stressed in the radial direction, and consequently positioning is not accurate is avoided. And therefore, the positioning precision when the expansion stud is used for temporary positioning is improved.

Description

technical field [0001] The invention belongs to the technical field of fasteners, in particular to an expansion stud. Background technique [0002] Expansion bolts use the inclination of the shape to promote the expansion to generate friction and grip force to achieve the fixing effect. One end of the stud is threaded, the other end has a cone, and it is wrapped with a layer of metal sleeve. The metal sleeve has a number of cuts at the end of the cone. Put them together into the punched hole, and then lock the nut. The nut pulls the screw outward, and The outer metal sleeve does not move, so the vertebra is pulled into the metal sleeve, and the metal sleeve is expanded to fill the entire hole. At this time, the expansion bolt cannot be pulled out. [0003] When it is necessary to set up measuring equipment or processing equipment on some large parts, it is necessary to temporarily locate and lock the measuring or processing equipment to fix it on the parts to facilitate the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B13/06F16B13/12
CPCF16B13/068F16B13/124
Inventor 张平磊
Owner 舒城嘉恒磁业有限公司
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