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Super-elastic SMA belt bundled non-initiating-explosive unlocking mechanism

An unlocking mechanism, superelastic technology, applied in the field of bundled, non-pyrotechnic unlocking mechanism, can solve the problems of small unlocking load, difficult assembly, high energy consumption, etc., to achieve large unlocking load, complete release, and low energy consumption Effect

Inactive Publication Date: 2018-07-27
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The invention mainly solves the problems of small unlocking load, large energy consumption, slow response, and difficult assembly in the prior art, and provides an unlocking load with large unlocking load, small energy consumption, fast response, self-adaptive adjustment, and strong impact resistance. , higher reliability bundled non-fireworks unlocking mechanism

Method used

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  • Super-elastic SMA belt bundled non-initiating-explosive unlocking mechanism
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  • Super-elastic SMA belt bundled non-initiating-explosive unlocking mechanism

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Embodiment Construction

[0038] The content of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0039] The invention provides a superelastic SMA belt-bound non-firework unlocking mechanism, such as Figure 1(a) ~ Figure 2(b) As shown, it includes: the first split body 1, the second split body 2, the third split body 3, the first limit pin 4, the second limit pin 5, the third limit pin 6, and the release bolt 7 , SMA belt 8, base 9, shell 10, burning rope 11, first heating wire 12, second heating wire 13, third heating wire 14, release spring 15.

[0040] The first split body 1, the second split body 2, and the third split body 3 have the same structure, and they are 120° fan-shaped when viewed from above. In the locked state, the three split bodies together form a complete limiting cone surface, locking Release bolt 7. Taking the first split body 1 as an example, as shown in Figure 3(a) and Figure 3(b), its inner side is pr...

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Abstract

The invention provides a super-elastic SMA belt bundled non-initiating-explosive unlocking mechanism and relates to the field of spacecraft unlocking devices. By the adoption of the device, three assembled section bodies are restrained to a complete limiting conic face through a base, limiting pins and an SMA belt, and a release bolt is locked; and the tail of the SMA belt bundling the outer sidesof the section bodies is connected with a combustion rope, and the combustion rope alternately compresses three electric heat wires in a crossing mode when the SMA belt is twined and tightened through the combustion rope. In the releasing process, the electric heat wires are powered on to heat the combustion rope, the combustion rope is burnt out, the SMA belt expands under the restoring force ofthe SMA belt, the restraint on the section bodies is released, the release bolt is pushed out by a release spring, and the mechanism is unlocked and released. The adopted SMA belt has super-elasticity and a high damping characteristic, and the mechanism is large in unlocking load and high in anti-impact capacity; the mechanism can be adaptively adjusted through transitional spherical surface design of the release bolt; and by the adoption of the scheme that the combustion rope is burnt out through the three electric heat wires, energy consumption is reduced, release time is shortened, and redundant design is achieved.

Description

technical field [0001] The invention relates to the technical field of spacecraft unlocking devices, in particular to a binding-type, non-pyrotechnic unlocking mechanism. Background technique [0002] The spacecraft needs a variety of unlocking devices to realize the connection and unlocking functions, such as the separation of multi-stage launch vehicles, the deployment of solar wings on satellites or spacecraft, and so on. At present, this unlocking device includes pyrotechnics and non-pyrotechnics. Due to the impact and pollution problems caused by the unlocking process, pyrotechnic products can no longer meet the needs of technological development. Especially after the emergence of a new generation of small satellites, the research and development of non-pyrotechnic unlocking devices has received more and more attention. The bundled non-pyrotechnic unlocking mechanism is an important type of non-pyrotechnic unlocking device, which uses flexible materials or structures t...

Claims

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Application Information

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IPC IPC(8): B64G1/64B64G1/44
CPCB64G1/44B64G1/64
Inventor 张小勇闫晓军聂超黄大伟漆明净
Owner BEIHANG UNIV
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