External - locked switch system designed by our institute won the standard design gold medal of the fourth national excellent projects 我院设计的外锁闭道岔系统荣获全国第四届优秀工程标准设计金奖。
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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。
