重型楔形锁紧装置的研制  

Research of the heavy wedge lock

作　　者：何恩[1] 程皓月[1] 赖天华[1] 冷国俊[1] HE En;CHENG Hao-yue;LAI Tian-hua;LENG Guo-jun(The 29th Research Institute of CETC.,Chengdu 610036,China)

机构地区：[1]中国电子科技集团公司第二十九研究所,四川成都610036

出　　处：《机电工程》2020年第6期715-718,共4页Journal of Mechanical & Electrical Engineering

基　　金：国家自然科学基金青年基金资助项目(51605452)。

摘　　要：针对普通楔形锁紧装置(以下简称锁紧装置)的夹持力较小,不适用于锁紧大质量电子设备的问题,对锁紧装置的结构组成进行了优化,对锁紧装置的夹持力进行了力的推导和研究。提出了锁紧装置的夹持力与螺钉的预紧力、楔形滑块节数、滑块相互夹角及摩擦系数之间的公式关系;同时,结合力学有限元仿真的方法,计算了锁紧装置的应力分布;最后进行了电子设备的随机振动试验。研究结果表明:钛合金材料更适合重型锁紧装置,通过选择合适的材料和夹持力匹配计算,重型锁紧装置满足大质量电子设备的振动环境要求,但应注意提高重型锁紧装置和锁紧槽之间接触面的耐磨性。Aiming at the clamping force of the ordinary wedge lock is small,and it is not suitable for locking the electronic equipment of high quality,the structure of the wedge lock was optimized.The clamping force of the wedge lock was deduced and studied.The formulae of the clamping force,the force of the screw,the number of joints,the angle between the sliders and the friction coefficient were presented.The stress distribution of the wedge lock was calculated by finite element simulation.Finally,the random vibration test of electronic equipment was carried out.The results indicate that titanium alloy is more suitable for heavy wedge lock,by selecting suitable materials and calculating the clamping force,the heavy wedge lock can meet the requirement of the vibration environment of the electronic equipment.However,attention should be paid to improving the wear resistance of the contact surface between the heavy wedge lock and the locking groove.

关 键 词：楔形锁紧装置 夹持力 电子设备 

分 类 号：TH122[机械工程—机械设计及理论] TH123.4