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Shaft holding and limiting integrated device using memory alloy wire

A memory alloy wire and memory alloy technology, applied in the fields of aerospace and mechanical engineering, can solve the problems of dust pollution to instruments, cannot be reused, large weight and volume, etc., and achieve the effect of low cost, compact structure, and increased contact area.

Active Publication Date: 2021-02-23
CHANGCHUN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the existing locking mechanism has a large impact on the load when it is unlocked, dust pollutes the instrument, and it cannot be reused, and the equipment can only be locked at a single position, the problem of large weight and volume is proposed. Shaft holding and limiting integrated device using memory alloy wire

Method used

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  • Shaft holding and limiting integrated device using memory alloy wire
  • Shaft holding and limiting integrated device using memory alloy wire
  • Shaft holding and limiting integrated device using memory alloy wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0025] Such as Figure 1-2 As shown, the rotating shaft holding and limiting integrated device adopting memory alloy wire includes: holding unit 1, locked rotating shaft 2, memory alloy wire 3, pressure plate 4, locked shaft mounting plate boss 5, memory Alloy mounting block 6 and mounting plate 7.

[0026] Such as image 3 As shown in (a) and (b), the holding unit 1 includes: V-shaped block 1-1, V-shaped block guide column 1-2, mounting plate 1-3, spring 1-4, mounting groove 1-5; The type block 1-1 is installed on the V-shaped block guide column 1-2, and the V-shaped block 1-1 is connected with the mounting plate 1-3 by the spring 1-4 and the V-shaped block guide column 1-2, and the V-shaped block 1-1 can slide in the V-shaped block guide column 1-2, the position where the V-shaped block 1-1 and the V-shaped fast guide column 1-2 are in contact is plated with molybdenum disulfide to prevent vacuum cold welding, and the installation groove 1-5 is in the V Formed on the type...

Embodiment approach 2

[0032] Such as Figure 4 with 5 As shown, the rotating shaft holding and limiting integrated device using memory alloy wire, the device includes: holding unit 1, locked rotating shaft 2, memory alloy wire 3, pressure plate 4, locked shaft mounting plate boss 5, Memory alloy mounting block 6, mounting disc 7, movement limiter 8 and static limiter 9.

[0033] For the shaft with limited rotation angle, a mechanical limit can be added to the locking device, such as Figure 5 As shown, the static limit 9 is set on the V-shaped block 1-1 of the two groups of clamping units 1, and the angle of the two static limit 9 is the same as the rotation range of the locked rotating shaft 2, and the locked rotating shaft 2 A movement limiter 8 is arranged on the top, and the position of the movement limiter 8 is within the rotation range of the locked rotating shaft 2, and its specific position is at the initial rotation position of the locked rotating shaft 2.

[0034] When locking, by adju...

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Abstract

The shaft holding and limiting integrated device using memory alloy wire belongs to the technical field of mechanical engineering. In order to solve the problem that the existing locking mechanism has a large impact on the load when it is unlocked, dust pollutes the instrument, and it cannot be reused. The problem of locking the equipment at a single position is that the weight and volume are relatively large. The device includes: three sets of clamping units, locked rotating shafts, memory alloy wires, pressure plates, mounting plate bosses, memory alloy mounting blocks and mounting plates; The group of clamping units are evenly distributed and fixed on the installation plate, and the three will be pressed and fixed by the locking shaft. The memory alloy wire is installed in each group of clamping units; the head and tail ends of the memory alloy wire are wound around the memory alloy wire for installation. block, and then directly connected to the power supply; the memory alloy wire mounting block is fixedly installed between the pressure plate and the boss of the mounting plate. The invention can be used for single-axis or multi-axis equipment for spaceflight such as tracking, ranging, communication and reconnaissance.

Description

technical field [0001] The invention relates to a locking device which adopts the restoring force of the memory alloy wire to hold the rotating shaft tightly, and realizes locking the rotating shaft of the equipment when the satellite is launched and in operation. The device is protected by a mechanical limit, which belongs to the technical field of mechanical engineering and is applied in the aerospace field. Background technique [0002] In order to complete functions such as ranging, communication, reconnaissance and space survey, aerospace equipment has a single-axis or multi-axis rotation function. When the satellite is launched, the impact is large, and the movement of the rotating shaft will cause safety hazards. At the same time, moving the rotating shaft will reduce the fundamental frequency of the equipment, which is easy Resonance is caused, and the shaft system needs to be locked during satellite launch. On the one hand, it can improve the structural rigidity of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D49/18F16B21/10
CPCF16B21/10
Inventor 张家齐李响李小明白杨杨孟立新张立中
Owner CHANGCHUN UNIV OF SCI & TECH