Retracting internal lock emergency unlocking electromechanical actuator

• Main Authors: KUANG KEHUAN, WANG CHI, ZENG HUAYONG, TIAN JIANHONG
• Format: Patent
• Language: Chinese; English
• Published: 03.10.2023
• Subjects: BLASTING; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR; FLUID-PRESSURE ACTUATORS; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; HEATING; HYDRAULICS OR PNEUMATICS IN GENERAL; LIGHTING; MECHANICAL ENGINEERING; SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; WEAPONS

The utility model discloses a retraction internal lock emergency unlocking electromechanical actuator, which effectively solves the problem that a conventional dual-redundancy electromechanical actuator still needs to depend on electric power to realize emergency retraction and release. According to the technical scheme, a radial necking groove of a lead screw nut corresponds to a locking guide groove of a nut sleeve and is restrained by a sliding block below the nut sleeve, the sliding block is connected with an emergency sliding sleeve, and a locking force spring and a reset spring are restrained on the end face of a piston head, the end face of the emergency sliding sleeve and the end face of a locking sliding sleeve of a stepped sleeve. The lead screw nut drives the nut sleeve to push the stepped barrel and the locking sliding sleeve to overcome the elastic force movement of the reset spring and the upper locking force spring together, mechanical switching locking or unlocking of the rigid locking ball is