A quick separation device driven by memory alloy wire

Abstract

The invention provides a quick separation device driven by a memory alloy wire, comprising a passive end installed on the docking star and an active end installed on the active star, the passive end includes an arc-shaped gasket, and the arc-shaped gasket There is a spigot in the circumferential direction of the sheet; the active end includes a housing, a locking rod, a hook, a loading nut, a shift fork, a bracket, a bearing ring, a memory alloy wire and an inclined block, and the bottom of the bearing ring is supported on the bead cap. On the boss, the top of the bearing ring is in contact with the bottom end of the slanting block arranged on the bracket, and the top of the slanting block is in contact with the lower surface of the hook. When the memory alloy wire is energized, the memory alloy wire shortens and drives the bearing ring to rotate. Through the downward movement of the inclined block in contact with the top of the bearing ring, the constraint of the hook to the shift fork is released, and then the constraint on the locking rod is released, so that the separation and unlocking of the active star and the docking star are realized. The separation device of the present invention realizes rapid separation, has low impact, energy saving and environmental protection, small volume, high reliability and can be used repeatedly.

Description

technical field [0001] The invention belongs to the field of aerospace technology, and in particular relates to a quick 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, cannot be reused, and detonate. 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 technical ...

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