The invention provides an SMA-spring-driven flywheel repeatable locking mechanism. The SMA-spring-driven flywheel repeatable locking mechanism comprises two sets of SMA-spring driving assemblies, twosets of lock column-wedge block units, a connecting rod, a sliding block and the like. An unlocking SMA wire-jacking spring is used for driving the locking process and the unlocking process, a triggering and locking SMA wire-unlocking keeping spring is used for controlling the unlocking state, a jacking spring simultaneously drives the left and right sets of lock column-wedge block units through the sliding block, the sliding block is connected with a wedge block through a connecting rod, and the wedge block is matched with the bottom surface of the lock column; in the locking process, the sliding block moves forwards to drive the wedge block to move outwards, and the lock column is pushed to move upwards to make contact with the flywheel. During releasing, the unlocking SMA wire is powered on and contracted, the sliding block moves backwards to drive the wedge block to move inwards, and the lock column moves downwards to be separated from the flywheel. And when locking is conducted again, the triggering and locking SMA wire is powered on, so that the triggering and locking SMA wire contracts and pulls out of the limiting block, limiting on the sliding block is relieved, and the mechanism can be locked again. Repeated locking can be achieved, synchronism is high, and vibration resistance and impact resistance are high.

    本发明提供一种SMA-弹簧驱动的飞轮可重复锁紧机构,包括两套SMA-弹簧驱动组件、两组锁柱-楔块单元、连杆、滑块等。其中,解锁SMA丝-顶紧弹簧用于驱动锁紧过程和解锁过程,触发锁紧SMA丝-保持解锁弹簧用于控制解锁状态。顶紧弹簧通过滑块同时驱动左右两组锁柱-楔块单元,滑块通过连杆与楔块连接,楔块与锁柱底面配合;锁紧时,滑块前移带动楔块向外侧移动,推动锁柱上移与飞轮接触。释放时,解锁SMA丝通电收缩,滑块后移带动楔块向内侧移动,锁柱下移与飞轮脱离。再次锁紧时,对触发锁紧SMA丝通电,使其收缩拉出限位块,解除对滑块的限位,机构可再次锁紧。本发明可实现重复锁紧,同步性高,抗振动、冲击能力强。


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    Title :

    SMA-spring-driven flywheel repeatable locking mechanism


    Additional title:

    一种SMA-弹簧驱动的飞轮可重复锁紧机构


    Contributors:
    ZHANG XIAOYONG (author) / RAO ZHIXIANG (author) / YAN XIAOJUN (author) / HUANG DAWEI (author) / QI MINGJING (author) / LIU ZHIWEI (author)

    Publication date :

    2020-04-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64G Raumfahrt , COSMONAUTICS



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