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Shape memory alloy eccentric locking device and mounting method thereof

A memory alloy and eccentric locking technology, which is applied in the field of nut locking, can solve problems such as difficult to meet the anti-loosening requirements, inability to disassemble, poor seismic performance, etc.

Inactive Publication Date: 2020-06-05
SUZHOU GUOJIA MEMORY ALLOY CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above technical problems, the present invention provides a shape memory alloy eccentric locking device, which can avoid the current nut locking means, which has poor shock resistance in a high-frequency vibration environment and is difficult to meet the anti-loosening requirements. Partial anti-loosening methods It can only be used as a one-time use, and it is difficult or impossible to disassemble, which brings a lot of inconvenience to the maintenance and repair of the connected parts

Method used

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  • Shape memory alloy eccentric locking device and mounting method thereof
  • Shape memory alloy eccentric locking device and mounting method thereof
  • Shape memory alloy eccentric locking device and mounting method thereof

Examples

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Effect test

Embodiment 1

[0023] Such as Figure 1-Figure 4 As shown, a shape memory alloy eccentric locking device includes a bolt 1, a connecting piece 31 and a connected piece 32. The bolt 1 passes through the through holes of the connected piece 32 and the connecting piece 31 in sequence and is connected to the locking mechanism. The tightening mechanism includes a memory alloy fastening ring 21, a slotted nut 22 and a locking washer 23, the locking washer 23 is set on the bolt 1, the bottom of the locking washer 23 is in contact with the surface of the connector 31, and the upper part of the locking washer 23 is a cone Shaped eccentric connector, conical eccentric connector and the bottom of the slotted nut 22 are installed together, the upper part of the slotted nut 22 is annularly distributed with a number of internal thread petals, the internal thread petals are matched with a memory alloy fastening ring 21, and the inner side of the bottom of the slotted nut 22 It is a tapered structure, and t...

Embodiment 2

[0026] Such as Figure 1-Figure 4 As shown, a shape memory alloy eccentric locking device includes a bolt 1, a connecting piece 31 and a connected piece 32. The bolt 1 passes through the through holes of the connected piece 32 and the connecting piece 31 in sequence and is connected to the locking mechanism. The tightening mechanism includes a memory alloy fastening ring 21, a slotted nut 22 and a locking washer 23, the locking washer 23 is set on the bolt 1, the bottom of the locking washer 23 is in contact with the surface of the connecting piece 31, and the upper part of the locking washer 23 is a cone Shaped eccentric connector, conical eccentric connector and the bottom of the slotted nut 22 are installed together, the upper part of the slotted nut 22 is annularly distributed with a number of internal thread petals, the internal thread petals are matched with a memory alloy fastening ring 21, and the inner side of the bottom of the slotted nut 22 It is a tapered structure...

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Abstract

The invention discloses a shape memory alloy eccentric locking device. The shape memory alloy eccentric locking device comprises a bolt, a connecting piece and a connected piece, wherein the bolt sequentially penetrates through the through holes of the connected piece and the connecting piece and is connected with a locking mechanism. The invention also discloses a mounting method of the shape memory alloy eccentric locking device, the method comprises the following steps that 1, a memory alloy fastening ring is placed in a dry ice industrial alcohol solution to be cooled to a martensite state; 2, a slotted nut is subjected to cold spraying for 20s-30 s through liquid nitrogen; 3, a locking pad, the slotted nut and the memory alloy fastening ring are sequentially mounted on the bolt; and 4, the memory alloy fastening ring is heated. The shape memory alloy eccentric locking device and the mounting method thereof can effectively solve the problems that an existing nut locking means is poor in anti-vibration property in a high-frequency vibration environment, the anti-loosening requirement is difficult to meet, the part of anti-loosening methods can only be used for one time and the shape memory alloy eccentric locking device are difficult or cannot be disassembled, and much inconvenience is brought to maintenance and repair of the connected piece.

Description

technical field [0001] The invention relates to the technical field of nut locking, in particular to a shape memory alloy eccentric locking device and an installation method thereof. Background technique [0002] At present, the main anti-loosening methods such as mechanical anti-loosening, frictional anti-loosening, and riveting and bonding anti-loosening, etc., these methods have poor seismic performance in high-frequency vibration environments, and it is difficult to meet the anti-loosening requirements. Some anti-loosening methods can only As a one-time use, it is difficult or impossible to disassemble, which brings a lot of inconvenience to the maintenance and repair of the connected parts. Contents of the invention [0003] Aiming at the above-mentioned technical problems, the present invention provides an eccentric locking device of shape memory alloy, which can avoid the current nut locking means, which has poor shock resistance in high-frequency vibration environm...

Claims

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Application Information

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IPC IPC(8): F16B39/02
CPCF16B39/02F16B2200/77
Inventor 刘福顺王红娟孙宝辉韩步云申光史芳杰王科
Owner SUZHOU GUOJIA MEMORY ALLOY CO LTD
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