某火箭炮高低行军固定器设计与仿真分析

Design and Simulation Analysis of Elevation Marching Fixture of a Rocket Launcher

根据某火箭炮的特点和行军固定器的设计要求,对比各种锁紧方式的优缺点,为其设计了机械式高低行军固定器,通过计算初步确定了楔形块和驻钩上斜面的倾角、回复弹簧的刚度系数等主要参数。在Adams中仿真行军固定器的锁紧、解锁和受冲击载荷作用的过程,检验其是否能满足使用要求。根据动力学仿真结果得到的载荷数据,在Abaqus中对行军固定器的关键部件支臂进行有限元分析。仿真和计算结果表明:行军固定器可实现自动锁紧,解锁过程所需的手柄力符合设计要求,在冲击载荷作用下锁紧可靠,支臂的刚强度满足要求。

According to the features of a rocket launcher and the design requirements of marching fixture,the advantages and disadvantages of the various of lock modes are contrasted,and then a mechanical elevation marching fixture is designed. The wedge＇s and the hook＇s tilt angles and the spring＇s stiffness coefficient are determined preliminarily by computing. The process of the marching fixture locking,unlocking,and being affected is simulated by impact load in Adams,and investigated whether it worked well. The result of load data is used to make finite element analysis of the supporting arm in Abaqus. The simulation results show that the marching fixture can lock automatically,the unlocking handle force meet the design requirements,the marching fixture can lock reliably under the condition of impact load,and the supporting arm＇s stiffness and strength can meet the requirement.