摘要
对运营中的高速动车组进行振动在线测试,分析高速动车组车内振动的时频特性,同时对车轮踏面形状进行同步测试,研究车轮等效锥度特征,分析比较晃车车轮和正常车轮等效锥度的差异以及对晃车现象的影响.测试结果表明,车体出现晃动时平稳性指标明显大于2.5,晃动主频为1.5 Hz左右,主要表现为车体侧滚和摇头的耦合振型;轮轨匹配等效锥度偏小以及抗侧滚扭杆、抗蛇行减振器性能衰减是造成车体晃动的主要原因,因此控制轮轨匹配的等效锥度和保证转向架悬挂系统正常对车辆运营具有重要意义.
The interior vibration of the high-speed EMUs were measured on the line with the purpose of identifying their characteristics. The obtained results were analyzed to obtain the vibration level and the spectra. Meanwhile, the profile of wheel was also measured in order to study equivalenteonicity of the wheelset, and analyze diffrences between normal wheel and wheel of carbody swing. It is found that sperling index is more than 2.5 obviously while carbody swinging, corresponding to themain frequency of about 1.5 Hz, plays a coupling model shape of roll and yaw. The main reason is that equivalentconicity is lower and performance decay of yaw damper or anti-rolling bar. So there is important signification for vehicle normal operation controlingequiva- lentconicity of wheel/rail matching and normal bogie suspension system.
出处
《大连交通大学学报》
CAS
2017年第1期21-25,共5页
Journal of Dalian Jiaotong University
基金
牵引动力国家重点实验室开放课题资助项目(TPL1402)
关键词
晃车
平稳性
等效锥度
carbody swing
sperling index
equivalent conicity
作者简介
何旭升（1984-），男，工程师，学士，主要从事动车组运用检修的研究E—mail：emuhexs@126．com．
