Shape memory alloy spring-actuated controlled unlocking device

Abstract

The invention discloses a shape memory alloy spring-actuated controlled unlocking device, comprising a separated part and an unlocking device for driving the separated part to generate displacement, wherein the unlocking device comprises a cylinder body and an unlocking driving device arranged in the cylinder body, one end of the separated part is accommodated in the cylinder body, the outer surface of the separated part is provided with a clamping groove, the unlocking driving device comprises an elastic clamping ring, a shape memory alloy spring and a heating guiding post for heating the shape memory alloy spring for enabling the shape memory alloy spring to generate deformation. The shape memory alloy spring-actuated controlled unlocking device has the beneficial effects that the shape memory alloy spring is used for driving the separated part, so that the separation of the separated part from a separating part can be quickly and accurately realized under a variety of working conditions; and the unlocking device is simple in structure, flexible in movement and convenient to use and maintain, is pollution-free and can be recycled for repeated utilization, the reliability and the stability of the unlocking device are improved, the service life of the unlocking device is prolonged, and the development of the unlocking device is promoted.

Description

technical field [0001] The invention relates to an unlocking device, in particular to a controllable unlocking device driven by a shape memory alloy spring, which belongs to the field of mechanical engineering and intelligent material application disciplines. Background technique [0002] At present, some unlocking devices are often required in the missile and civilian fields to control the separation and unlocking of certain mechanical structures. Therefore, the performance of the unlocking device during the separation process is directly related to the success or failure of certain mechanisms. Therefore, the unlocking device in actual use must meet the requirements of ensuring that the two separate parts are reliably connected in a self-locking state before separation; It will not affect the follow-up work of the institution. The unlocking devices often used in the current technology are mostly explosive unlocking methods. figure 1 It is a weakened groove type explosive ...

AI Technical Summary

Problems solved by technology

When the unlocking device of this structure in the prior art explodes, the explosive products will overflow from the separation surface, and the explosion will produce fragments, which will cause a certain degree of pollution to the surrounding equipment or environment, and may seriously affect the mechanism. Follow-up work, and secondly, this unlocking method is a one-time mechanism that cannot be reused multiple times, resulting in unnecessary waste of energy

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