Research of the heavy wedge lock

HE En, CHENG Hao-yue, LAI Tian-hua, LENG Guo-jun
(The 29th Research Institute of CETC., Chengdu 610036, China)

Abstract: 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.
Key words: wedge lock; clamping force; electronic equipment