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Shape memory alloy cotter

A memory alloy and cotter pin technology, which is applied to threaded fasteners, connecting components, screws, etc., can solve the problems of loss of anti-retraction, anti-loosening functions, difficult removal, time-consuming and labor-intensive problems, etc.

Inactive Publication Date: 2020-05-19
兰州西脉科立新材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above technical problems, the present invention provides a shape memory alloy cotter pin, which can avoid the breakage of the tail caused by the repeated use of the current cotter pin, and the loss of the anti-retraction and anti-loosening functions. At the same time, it needs to be fastened with the help of other utensils or tools after installation Operation, and dismantling is difficult, time-consuming and labor-intensive

Method used

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Examples

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Embodiment Construction

[0011] Such as figure 1 As shown, the shape memory alloy cotter pin includes a NiTi shape memory alloy cotter pin body 2, the NiTi shape memory alloy cotter pin body 2 is a U-shaped card structure with a ring structure at one end, and the NiTi shape memory alloy cotter pin body 2 has two tails. a transverse tail.

[0012] Such as figure 2 As shown, when the present invention is in use, the operator puts the present invention in an environment below 0°C to fully cool it, and deforms its tail, and straightens the two transverse tail fins for easy installation. After the bolt 1 and nut 3 are installed in place, Insert the deformed cotter pin into the bolt hole, and heat it with a heat source above 40°C (a lighter, hair dryer or heat gun can be used for heating). The cotter pin undergoes reverse transformation of martensite when heated, and the macroscopic performance shows that it returns to the shape before deformation, so as to achieve anti-corrosion. The function of anti-lo...

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Abstract

The invention discloses a shape memory alloy cotter. The device comprises a NiTi shape memory alloy cotter body. The NiTi shape memory alloy cotter body is of a U-shaped clamp structure with one end being of an annular structure. By means of the shape memory alloy cotter, the problems that due to repeated usage of a current cotter, tail fracture is caused, the functions of retreat stopping and loosening preventing are lost, meanwhile, after installation, other appliances or tools need to be utilized for fastening operation, dismounting is difficult, and time and labor are wasted can be effectively solved.

Description

technical field [0001] The invention relates to the technical field of cotter pins, in particular to shape memory alloy cotter pins. Background technique [0002] Cotter pins are a product commonly used in industrial equipment, especially mechanical devices, and are mainly used for pin shaft and nut loosening prevention. Common cotter pins are mainly made of high-quality steel, and their tails need to be opened during installation to prevent the cotter pins from falling out so as to realize the anti-loosening and anti-loosening function. [0003] The repeated use of the current cotter pin will cause the tail to break and lose the functions of anti-retraction and anti-loosening. At the same time, after installation, it needs to be fastened with the help of other utensils or tools, and it is difficult to remove, time-consuming and labor-intensive. Contents of the invention [0004] Aiming at the above technical problems, the present invention provides a shape memory alloy c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B19/02F16B39/02
CPCF16B19/02F16B39/02
Inventor 韩步云聂永胜李景元申光马悦辉王红娟
Owner 兰州西脉科立新材料有限公司
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