Connecting and separating device based on memory alloy wire driving

Abstract

The invention provides a connecting and separating device based on memory alloy wire driving, which comprises a driving end and a driven end, wherein the driving end comprises a shell, an outer sleeve, a fixed sheet, a compression spring, a rotary sleeve, a base, a memory alloy wire, a guide wheel, a lock pin, a limiting sleeve I and a limiting sleeve II, and the driven end comprises a screw rod,a loading nut, a separating piece and an adapter piece; the upper end of the screw rod is a threaded section matched with the loading nut, and the lower end of the screw rod is provided with multiplelayers of inclined bulges; the multiple layers of inclined bulges extend into the upper part of an accommodating space formed by the limiting sleeve I and the limiting sleeve II; when the memory alloywire is powered on, the memory alloy wire is shortened, the base and the lock pin move upwards, the lock pin relieves limiting of the lower ends of the limiting sleeve I and the limiting sleeve II, the two limiting sleeves rotate simultaneously, the lower portions of the limiting sleeve I and the limiting sleeve II are folded, the upper portions of the limiting sleeve I and the limiting sleeve IIare opened and separated from the screw rod, and the driving end and the driven end are separated. The device realizes rapid separation, and has the advantages of no impact, energy conservation, environmental protection, small size, high reliability and reusability.

Description

technical field [0001] The invention belongs to the field of aerospace technology, in particular to a connection and separation device driven by a memory alloy wire. Background technique [0002] The connection and separation release technology is a key technology in the field of aviation weapons and space vehicle technology. The traditional fast-response connection and separation devices usually use pyrotechnic devices. The pyrotechnic devices have poor safety, large load impact, non-repeatable detection, and detonation. Afterwards, problems such as excess or polluted gas are easily generated. With the advancement of national defense aviation weapons and equipment, aviation lunar exploration projects, and future space station construction, the characteristics of low impact or even no impact, energy saving and environmental protection, small size, high reliability, and reusability have become the new development direction of connection and separation technology. It is a tec...

AI Technical Summary

Problems solved by technology

[0002] The connection and separation release technology is a key technology in the field of aviation weapons and space vehicle technology. The traditional fast-response connection and separation devices usually use pyrotechnic devices. The pyrotechnic devices have poor safety, large load impact, non-repeatable detection, and detonation. Afterwards, it is easy to produce redundant substances or polluting gases and other problems

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