Explosion type emergency unlocking device for built-in mechanical lock of actuator cylinder

Abstract

The invention discloses an explosion type emergency unlocking device for built-in mechanical lock of an actuator cylinder, belonging to the field of actuator cylinder unlocking device for a built-in mechanical lock. The emergency unlocking device comprises an unlocking mechanism and a disconnection transmission mechanism, wherein the unlocking mechanism comprises a cylinder; an emergency piston and a sealing spacer bush are arranged in an inner cavity of the cylinder; the cylinder is provided with a through hole for placing a first electric squib; a closed cavity is formed between the first electric squib and the emergency piston and sealing spacer bush; the disconnection transmission mechanism comprises a cylinder bottom and a ball screw shaft; the cylinder bottom is provided with a through hole for placing a second electric squib; an emergency shaft sleeve for placing an emergency shaft is arranged at the bottom of an inner hole of the cylinder bottom; and a closed cavity is formed between the second electric squib and the cylinder bottom and emergency shaft. Through the invention, the existing electric retraction actuator cylinder obtains an emergency unlocking function, the electric operation control system and structure of the original actuator cylinder are simplified, the manufacturing and using cost is reduced, and the safety of airplane is greatly improved.

Description

technical field [0001] The invention relates to a built-in mechanical lock actuating cylinder unlocking device, in particular to an explosive emergency unlocking device with a built-in mechanical lock in the actuating cylinder. The invention is applicable to other actuating cylinders with built-in locks of similar structure. Background technique [0002] The electric retractable actuator is used for retracting and retracting the landing gear of small (unmanned) aircraft and automatically locking it in the retracted and lowered positions. The device realizes the all-electric control action of the landing gear of a small (unmanned) aircraft, thereby replacing the traditional hydraulic control, and improving the overall performance of the aircraft such as maneuverability, reliability, and maintainability. [0003] The electric retractable actuator is controlled by the electric control system on the aircraft. In case of an emergency such as failure of the electric control syste...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defect that the existing actuator has no emergency unlocking function, or can only sacrifice the effective space of the aircraft, and back up the electric control system and device to complete the emergency unlocking and release of the landing gear, the present invention aims to provide an explosive type lock with a built-in mechanical lock in the actuator. Emergency unlocking device, the emergency unlocking device enables the existing electric retractable actuator to increase the emergency unlocking function on the basis of not changing the existing functions and basic structures, so as to ensure the safe flight of the aircraft

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