Self-locking electric steering engine

Abstract

The invention discloses a self-locking electric steering engine which comprises a motor, a reducer and a locking device. The locking device comprises an installing shell, a micro motor, a proximity switch, a fixed tooth disc, a threaded rod and a movable tooth disc, wherein the micro motor is fixed to the installing shell and used for providing locking torque; the proximity switch is used for providing locking in-position signals and unlocking in-position signals; the fixed tooth disc and a reduction gear are coaxially installed; the threaded rod is coaxially connected with the micro motor; the movable tooth disc is driven through the threaded rod. According to the self-locking electric steering engine, the locking device is designed to be in the primary stage of a transmission mechanism of the electric steering engine through middle gears; under the amplification action of the reduction ratio of the reducer to torque, large locking torque can be provided; meanwhile, after the steering engine is unlocked, additional inertial influences of the locking device on the motor are small, and therefore the self-locking electric steering engine is high in reliability and practicability.

Description

technical field [0001] The invention belongs to the field of electric steering gear, and more specifically relates to a self-locking electric steering gear. Background technique [0002] The electric steering gear is the executive part that drives the deflection of the rudder piece during the flight of the missile. When the steering gear is powered on, the attitude of the projectile is controlled through the output torque and speed of the motor. The traditional control method of the electric steering gear is: motor-reducer-rudder piece , the electric steering gear does not have the self-locking ability, the steering gear cannot be continuously powered on during the flying process of the projectile, and the steering surface swings due to the air flow washing, this unfavorable factor seriously interferes with the flight of the aircraft, and even threatens the flight safety. To ensure flight safety, it is necessary to lock the rudder surface at zero position during the flight o...

AI Technical Summary

Problems solved by technology

[0004] In view of the above defects or improvement needs of the prior art, the present invention provides a self-locking electric steering gear, the purpose of which is to improve the reliability of locking, thereby solving the problem of locking due to brake failure in the prior art due to impact overload. unreliable technical issues

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