新型锁扣结构对道岔心轨与叉跟轨变形影响的分析计算  

Analysis and Calculation of the Influence on the Deformation of the Point Rail and the Rail at Forg Heel of the Switch Connected by the New Locking Buckle Structure

作　　者：崔琨喨 王宁 CUI Kunliang;WANG Ning

机构地区：[1]中铁山桥集团有限公司,河北秦皇岛066004

出　　处：《铁道技术监督》2025年第3期51-55,共5页Railway Quality Control

摘　　要：为减小温度力对辙叉伸缩变形的影响,提出一种连接心轨和叉跟轨的新型锁扣结构。介绍新型锁扣结构,采用理论分析计算和有限元仿真2种方法计算,采用新锁扣结构后的叉跟轨纵向阻力及其温度差。结果表明,采用新型锁扣结构连接的心轨与叉跟轨可以抵抗温差67.1℃的变形,并在中国铁路北京局集团有限公司某站试用采用新型锁扣结构的组合辙叉。试用结果表明,经历1个冬季后,心轨和叉跟轨之间没有出现缝隙。这表明采用新型锁扣结构能够增强辙叉组件抵抗大幅温差变化的能力。To reduce the influence of temperature force on the expansion and contraction deformation of the frog,a new type of locking buckle structure is proposed at the connection position between the point rail and the rail at frog heel.The new locking buckle structure is introduced,and theoretical analysis and finite element simulation are used to calculate the longitudinal resistance and temperature difference at the rail at frog heel connected by the new locking buckle structure.The results show that the point rail and rail at frog heel connected by the new locking buckle structure can resist the deformation of the temperature difference of 67.1℃,and bolted rigid frog with the new locking buckle structure is tried out on a station of China Railway Beijing Group Co.,Ltd.The trial results show that after a winter,there is no gap between the point rail and the rail at frog heel.The ability of the frog component connected by new locking buckle structure to resist significant temperature differences can be enhanced.

关 键 词：道岔 辙叉 连接方式 温差 温度力 纵向阻力 

分 类 号：U213.62[交通运输工程—道路与铁道工程]