Electromechanical actuator capable of achieving full-scale, non-full-scale or follow-up function after lead screw is stuck

Abstract

The invention discloses an electromechanical actuator capable of achieving a full-scale, non-full-scale or follow-up function after a lead screw is stuck. A hydraulic actuating unit or a follow-up unit is ingeniously connected between a motor end and a rear support lug end of the electromechanical actuator, and when a lead screw pair of the electromechanical actuator is stuck at any position, thehydraulic actuating unit works, and the full-scale function or the non-full-scale function of the electromechanical actuator is achieved; or the follow-up unit works, and the follow-up function of theelectromechanical actuator is achieved. During bearing, the hydraulic actuating unit or the follow-up unit does not work, once the lead screw pair of the electromechanical actuator is stuck at any position, the hydraulic actuating unit or the follow-up unit is activated and starts to work, and the full-scale function or the non-full-scale function or the follow-up function is achieved according to actual working conditions.

Description

technical field [0001] The invention relates to an electromechanical actuator capable of realizing full-scale, non-full-scale or follow-up functions after the lead screw pair of an all-electric or non-all-electric electromechanical actuator for aerospace is stuck at any position, belonging to flight control Execution field. Background technique [0002] Electromechanical actuators are developing rapidly, and because of their outstanding advantages, their applications are also rapidly expanding, followed by requirements for longer working hours, but electromechanical actuators may be stuck when working for a long time , the action object will be affected after being stuck: [0003] 1. After the aviation electromechanical actuator is stuck, the aircraft wing and other actuating objects are forced to be fixed, which is uncontrollable and has a huge impact, which may cause crashes, casualties or other losses; [0004] 2. After the aerospace electromechanical actuator is stuck,...

AI Technical Summary

Problems solved by technology

[0002] Electromechanical actuators are developing rapidly, and because of their outstanding advantages, their applications are also expanding rapidly, followed by requirements for longer working hours, but electromechanical actuators may be stuck when working for a long time , the action object will be affected after being stuck:

[0003] 1. After the aviation electromechanical actuator is stuck, the aircraft wings and other actuating objects are forced to be fixed, which is uncontrollable and has a huge impact, which may cause crashes, casualties or other losses;

[0004] 2. After the aerospace electromechanical actuator is stuck, the movement of the nozzle and other actuating objects stops, and the direction is out of control, resulting in the launch failure of the launch vehicle and huge losses;

[0005] 3 After the marine electromechanical actuator is stuck, the steering rudder and other actuating objects are stuck, and the ship's course is out of control, resulting in losses

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