Heavy-load retractable electromechanical actuator with dissimilar energy emergency extension function

• Main Authors: WANG LI, KUANG KEHUAN, XIAN ZIJIN, TIAN JIANHONG
• Format: Patent
• Language: Chinese; English
• Published: 18.04.2023
• Subjects: AEROPLANES; AIRCRAFT; AVIATION; BLASTING; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; COSMONAUTICS; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; GENERATION; HEATING; HELICOPTERS; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; THERMAL INSULATION IN GENERAL; TRANSPORTING; WEAPONS

According to the heavy-load retractable electromechanical actuator with the dissimilar energy emergency extension function, the safety of the heavy-load retractable electromechanical actuator can be improved, and multi-redundancy emergency putting down of the piston barrel of different working media is achieved. According to the technical scheme, a boss locking ring arranged on the inner wall of a piston cylinder is embedded into a necking groove in the radial direction through the finger-shaped locking claw necking groove, an inner ring of an end flange locking claw is tightly attached to the outer ring face of an upper locking bush restrained in an annular cavity of the piston cylinder by a spring, and the flange locking claw at the end is kept in a locking groove of the boss locking ring; an emergency unlocking mechanism capable of being unlocked by an emergency medium and a locking mechanism with an emergency forced unlocking function are formed; when the lead screw pair is stuck and needs to emergently e