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Expansion bolt

A technology of expansion bolts and expansion sheets, which is applied in the direction of connecting components, pins, mechanical equipment, etc., can solve the problems of high production cost and complex structure, and achieve the effects of low cost, good effect and easy manufacture

Inactive Publication Date: 2012-10-31
兴化市长江铁路器材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the structure is complex and the production cost is high

Method used

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  • Expansion bolt
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Embodiment Construction

[0012] The specific embodiment of the present invention will be further described in detail in conjunction with the accompanying drawings.

[0013] See attached figure 1 , attached figure 2 , an expansion bolt, comprising a screw 2 and a nut 3 with a nut 1, the nut 3 and the screw 2 are respectively provided with internal and external threads matching each other, the nut 1 is threadedly connected with the screw 2, the The other end of the nut 1 relative to the screw 2 is also provided with four expansion pieces 4 with internal threads, the screw 2 penetrates the nut 1 and is threadedly connected with the expansion pieces 4, each of the expansion pieces 4 A protruding hoop 5 is provided on the top.

[0014] The embodiment is only for the convenience of understanding the technical solution of the present invention, and does not constitute a limitation to the protection scope of the present invention. Any simple modification, equivalent change and Modifications still fall wit...

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PUM

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Abstract

The invention discloses an expansion bolt which comprises a screw with a screw cap, and a nut. The nut and the screw are respectively provided with matched internal and external screw threads; the screw cap is in threaded connection with the screw; the other end of the screw cap relative to the screw is also provided with a plurality of expansion pieces with internal screw threads; and the screw passes through the screw cap to be in threaded connection with the expansion pieces. The expansion bolt has simple structure and low production cost, is easy to manufacture and has good expanding and fastening effects.

Description

technical field [0001] The invention relates to an expansion bolt for fixing parts in a hole, in particular to the connection of plate expansion bolts. Background technique [0002] Fasteners composed of bolts and nuts are widely used in many occasions such as science and technology, production, processing and testing, as well as mechanical equipment and instruments. Ordinary bolts generally do not have a self-locking function, and they can basically meet the requirements for use in general occasions. However, when used in some occasions with high vibration, the bolts will loosen due to the vibration. Especially on a moving vehicle or a dynamic instrument, this imperceptible looseness will affect the normal operation of the work, and the severe one will cause an accident. Therefore, in some special occasions, it is necessary to use self-locking bolts to prevent loosening. Marble and other stone walls or all kinds of wall tiles were laid directly on the wall with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B13/06
Inventor 钱中民王有清范军平蒋东升王春梅
Owner 兴化市长江铁路器材有限公司
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