摘要
对京津城际铁路CRH3C型动车组车轮磨耗、车辆振动性能进行长期跟踪试验研究。研究发现部分动车组车轮镟修后车体横向失稳,而镟修后车轮外形等效锥度过小是车体失稳的主要原因。通过理论分析与试验研究,确定新的系列薄轮缘车轮形面设计原则为:提高轮轨等效锥度;统一轮缘高度;高次曲线连接轮缘根部与踏面外形。通过仿真计算、试镟修与线路运用考核薄轮缘车轮外形。仿真计算和线路测试结果表明:京津城际铁路CRH3C型动车组车轮采用该系列薄轮缘外形镟修后,轮轨等效锥度为0.17,动车组车体失稳现象消失,构架稳定性和运行平稳性均满足标准要求,直径镟修量控制在2mm以内。
Long-term follow-up measurements were made to study the wheel tread wear and its influence to the running behavior of CRH3C EMUs operated on the Beijing-Tianjin Inter-city High-speed Railway Line .The re-sults showed that lateral car-body hunting unstability appeared after some wheels were profiled ,and the main reason was that the wheel tread profile conicity was too low . To solve such problems , the new series of thin flange wheel profiles were designed for CRH3C EMUs running on the Beijing-Tianjin Inter-city Railway Line . Three design principles were determined ,i.e. , to raise the equivalent wheel-rail profile conicity , to apply uni-form flange heights and to connect the flange root and tread contour by the high-order curve . T he new w heel profiles were tested and verified by dynamic simulation , trial profile and line operation . Simulation calculations and line measurements show that when the new series of thin flange wheel profiles are adopted with CRH 3C E-MUs running on the Beijing-Tianjin Inter-city Railway Line ,the equivalent wheel-rail conicity is 0.17 and the w heel diameter loss is controlled as less than 2 mm , the phenomena of carbody unstability disappear , and the CRH3C EM Us bogie stability and running stability satisfy the requirements specified in relevant standards .
出处
《铁道学报》
EI
CAS
CSCD
北大核心
2014年第2期11-17,共7页
Journal of the China Railway Society
基金
铁道部科技研究开发计划(2001J011)
国家重点基础研究发展计划(973计划)(2011CB711104)
关键词
车轮形面
轮轨关系
仿真计算
试验验证
wheel tread profile
wheel-rail relationship
simulation and calculation
test verification
