机械快门的高速碰撞过程分析与结构优化

High-speed Collision Analysis and Structural Optimization of the Mechanical Shutter

机械快门组件在某诊断系统采集到X光信号后能够迅速关闭通光孔以防止爆炸飞溅物损坏贵重光学元件。在该过程中,快门以20 m/s的速度撞击缓冲垫而停止。为了使快门能重复使用,对快门组件进行碰撞分析,发现快门撞击缓冲垫的能量除了自身的动能外还包括电动机动子的动能,进而通过优化电动机动子和快门的连接结构,使快门在每次碰撞过程中都不会发生破坏。

After receiving the X-ray signal in the diagnostic system,the mechanical shutter can close the light holes to prevent the damage of the precious optical devices induced by the explosion fragments.It stops by impacting the blotter at a speed of 20 meters per second.For using the shutter repeatedly,this paper analyzes the collision process and finds that not only the kinetic energy of the shutter but also the one of the rotor contribute to the collision energy,and then optimizes the structure of the connector between the shutter and the rotor,ensuring that the shutter will not be destroyed after the collision.