Locking and releasing structure driven by shape memory alloy strip

A locking and releasing, memory alloy technology, applied in the direction of the docking device of the spacecraft, can solve the problems of severe shock and vibration, unstable safety, pyrotechnic pollution, etc., achieve good impact resistance, short unlocking time, The effect of long service life

Active Publication Date: 2020-06-02
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Although the traditional pyrotechnic separation device often used in aerospace has experienced many in-orbit flight verifications and has high reliability, it has two inherent shortcomings: one is that the unlocking process is accompanied by severe shock and vibration, Second, only a single unlock and release can be achieved
On the one hand, the instability and potential safety hazards caused by high impact loads, on the one hand, the uneconomical effects of single use, and the pollution caused by explosives is becoming more and more serious

Method used

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  • Locking and releasing structure driven by shape memory alloy strip
  • Locking and releasing structure driven by shape memory alloy strip
  • Locking and releasing structure driven by shape memory alloy strip

Examples

Experimental program
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Embodiment 1

[0037] combine figure 1 , figure 2 and image 3 as shown, figure 1 It is a structural schematic diagram of the locked state of the locking and releasing structure driven by the shape memory alloy strip according to the present invention; figure 2 Yes figure 1 sectional view of image 3 It is a sectional view of the unlocked state of the locking and releasing structure driven by the shape memory alloy strip according to the present invention. In order to solve the technical problem that only a single unlocking and releasing can be realized in the unlocking process of the traditional pyrotechnic separation device, this embodiment discloses a locking and releasing structure driven by a shape memory alloy strip. The lock release structure driven by shape memory alloy strips includes a support frame, and the support frame includes: a support frame 1, which includes a sleeve 12 and at least one support arm 13 connected to the sleeve 12; an ejector 2 , which is movably arrang...

Embodiment 2

[0052] combine figure 1 , figure 2 and image 3 As shown, the locking and releasing structure driven by the shape memory alloy strip described above, the difference between this embodiment and the above embodiment is that the locking and releasing structure driven by the shape memory alloy strip further includes: locking The assembly 3 also includes a second return compression spring 33 and a second hook 34, the support frame 1 includes two support arms 13, and the two support arms 13 are symmetrical about the sleeve 12, and the locking and releasing structure driven by the shape memory alloy strip also Including the first pulley 6 and the second pulley 7; the second hook 34 and the first hook 31 are mirror-symmetrically arranged with respect to the ejector 2; the second return compression spring 34 and the first return compression spring 32 are arranged symmetrically with respect to the ejector 2 In the support arm 13, the second reset compression spring 34 is located belo...

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Abstract

The invention discloses a locking and releasing structure driven by a shape memory alloy strip, and relates to the field of locking and releasing mechanisms. The locking and releasing structure drivenby the shape memory alloy strip further comprises a supporting frame and a locking mechanism, wherein the supporting frame comprises a sleeve and at least one supporting arm connected with the sleeve; the ejection piece is movably arranged in the sleeve; the locking assembly is suitable for limiting the movement of the ejection piece in the axial direction in a locking state and releasing the movement limitation on the ejection piece in an unlocking state; and the shape memory alloy strip is suitable for enabling the locking assembly to enter an unlocking state when powered on and enabling the locking assembly to enter a locking state when not powered on. The plane hook locking and releasing structure driven by the shape memory alloy strip has the advantages of being low in impact, shortin unlocking time, easy to reset, high in motion precision, low in friction, free of pollution and capable of being repeatedly used.

Description

technical field [0001] The invention relates to the technical field of locking and releasing mechanisms, in particular to a locking and releasing structure driven by shape memory alloy strips. Background technique [0002] Although the traditional pyrotechnic separation device often used in aerospace has experienced many in-orbit flight verifications and has high reliability, it has two inherent shortcomings: one is that the unlocking process is accompanied by severe shock and vibration, The second is that only a single unlock and release can be realized. On the one hand, the instability and potential safety hazards caused by high impact loads, on the one hand, the uneconomical effects of single use, and the pollution caused by explosives is becoming more and more serious. In view of the above-mentioned defects, the creator of the present invention has finally obtained the present invention through long-term research and practice. Contents of the invention [0003] In or...

Claims

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Application Information

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IPC IPC(8): B64G1/64
CPCB64G1/64
Inventor 孙健刘彦菊冷劲松周宝徐渠鳗
Owner HARBIN INST OF TECH
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