道岔锁 meaning in Chinese

switch lock point lock
switch lock, point lock

In this paper a finite element model with several couples of contact surfaces is established to calculate the stress of outside turnout locking device on railway . the effects caused by the deformation of different rails on the stress field in the locking hooks are analyzed by marc software
本文对一种铁路道岔外锁闭装置建立了三维有限元接触计算模型，采用商业软件marc来进行计算，分析了心轨的变形对道岔锁闭钩的受力影响。