Multi-redundancy locking backup mechanical lock electromechanical actuator

Abstract

The invention discloses a multi-redundancy locking backup mechanical lock electromechanical actuator which is simple in structure, safe and reliable. According to the technical scheme, a reset lock spring assembled between two spring sliding sleeves provides the maintaining upper locking force for a steel lock ball, the spring sliding sleeves are connected with stepped barrel spring sleeves in a coupling mode, a boosting spring is restrained in a barrel opening of a sliding barrel through a spring seat ring on a stepped body, the boosting spring supports a steel ball in the radial direction through the sliding barrel to provide the maintaining upper locking force, a lead screw drives a lock ball in the middle of a piston rod rigid body and a steel ball at the tail of the piston rod rigid body to move, sliding sleeve spring sleeves provided with lead screw nuts drives the spring sliding sleeves to overcome the movement of the reset lock spring together to jack the lock ball into a locking groove in the radial direction, the spring sliding sleeves drive the sliding barrel to overcome the movement of the boosting spring together, the steel ball is pushed into a locking groove of an upper lock barrel to achieve locking, and on the contrary, the lead screw rotates reversely to drive the sliding sleeve spring sleeves, the spring sliding sleeves, a stepped barrel spring sleeve and the sliding barrel to retract, and the lock ball and the steel ball are separated from the lock ring.

Description

technical field [0001] The present invention is a redundancy locking backup device applied to electromechanical actuators, more specifically, the present invention is an electromechanical actuator that can improve the safety of electromechanical actuators and realize redundant locking backup. Background technique [0002] As a linear motion actuator, the electromechanical actuator is an energy conversion device used to realize the linear reciprocating motion of the working mechanism or the swing motion of less than 360°. The basic components of common electromechanical actuators include: motor, gearbox, transmission components, ball screw pair, outer cylinder assembly, piston rod assembly, self-locking assembly, etc. Due to the complex structure of the electromechanical actuator and the reliability of each part is different, different redundancy structure designs will lead to completely different reliability results. Especially the electromechanical actuator with self-locki...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems existing in the prior art, to provide a simple structure, safe and reliable redundancy locking backup electromechanical actuator, to solve the problem that the single redundancy locking device of conventional electromechanical actuators cannot meet the requirements of high safety application work. situation problem

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