42号大号码道岔心轨不解锁问题研究  

Study on Failure to Unlocking of Point of Frog of No.42 Turnout

作　　者：李振武 郑起 赵常伟 万大磊 徐健 LI Zhenwu;ZHENG Qi;ZHAO Changwei;WAN Dalei;XU Jian

机构地区：[1]中国铁路沈阳局集团有限公司沈阳高铁基础设施段,沈阳110016 [2]中国铁路沈阳局集团有限公司施工办,沈阳110016

出　　处：《铁道通信信号》2025年第1期104-107,共4页Railway Signalling & Communication

摘　　要：42号大号码道岔通常设置于高铁正线2条线路交汇处或线路所,而作为不同高铁线路的岔路口,线路所多为无人值守。当道岔出现故障后,维修人员处理时间相对较长,对行车影响较大。为此,沈阳高铁基础设施段经过近3年对京哈高速线、哈大高速线22组42号大号码道岔心轨不解锁问题进行深度分析,发现温度变化和结构因素是造成道岔心轨不解锁的主要原因。通过数据比对和研究试验,采取调整道岔框架尺寸、几何参数、道岔密贴力,以及改进外锁闭配件结构等措施,同时规范42号大号码道岔工电联合整治作业流程,可初步解决42号大号码道岔心轨不解锁问题,有益于保障高速铁路行车安全。The No.42 turnout is usually installed at the intersection of two lines or block posts on the main line of a high-speed railway.Located at the fork of different high-speed railway lines,the block posts are mostly unattended.When a turnout malfunctions,maintenance personnel take a long time to deal with it,which has a great influence on train operation.To this end,through nearly three years of in-depth analysis on the failures to unlocking of point of frogs in 22 sets of No.42 turnouts on Beijing-Harbin high-speed line and Harbin-Dalian high-speed line conducted by the Shenyang high-speed railway infrastructure maintenance division,it is found that the main reasons are temperature change and structure factors.By comparing data and conducting experiments,corrective actions such as adjusting the dimensions and geometric parameters of the turnout frame and the conversion resistance adhesion force of the turnout,and improving the structure of the external locking accessories,while standardizing the process of the joint rectification operations of No.42 turnout by signal and track maintenance personnel,the failure to unlocking of point of frog in No.42 turnout can be solved generally,conducive to ensure the safety of train operation of high-speed railway.

关 键 词：高速铁路 大号码道岔 提速道岔 卡阻故障 工电联调 

分 类 号：U282[交通运输工程—交通信息工程及控制] U284[交通运输工程—道路与铁道工程]