车轮打滑对2万吨重载列车纵向冲动影响分析  

Analysis of impact of wheel slip on longitudinal impulse of a 20000-ton heavy-haul train

作　　者：曾周 郭欣茹[3] 陈清华 陈哲[3,4] 凌亮[3] ZENG Zhou;GUO Xinru;CHEN Qinghua;CHEN Zhe;LING Liang(School of Electrical Engineering,Southwest Jiaotong University,Chengdu,Sichuan 611756,China;Locomotive Branch,Shuohuang Railway Development Co.,Ltd.,Suning,Hebei 062350,China;State Key Laboratory of Rail Transit Vehicle System,Southwest Jiaotong University,Chengdu,Sichuan 610031,China;CRRC Zhuzhou Locomotive Co.,Ltd.,Zhuzhou,Hunan 412001,China)

机构地区：[1]西南交通大学电气工程学院,四川成都611756 [2]朔黄铁路发展有限责任公司机辆分公司,河北肃宁062350 [3]西南交通大学轨道交通运载系统全国重点实验室,四川成都610031 [4]中车株洲电力机车有限公司,湖南株洲412001

出　　处：《机车电传动》2024年第3期108-116,共9页Electric Drive for Locomotives

基　　金：国家自然科学基金项目(U2268210,52072317)。

摘　　要：针对低黏着接触条件下车轮滑行所引起的列车纵向冲动问题,文章建立了“1+1”编组2万吨重载列车-轨道垂纵耦合动力学模型,对比分析电制动工况下不同轮轨接触状态对2万吨列车纵向冲动的影响,分别计算了车轮发生滑行位置和电制动力载荷大小对纵向冲动的影响规律。结果表明,在电制动运行工况下,当列车施加100%电制动力时,列车在湿润、油污和冰雪接触条件下均检测到了车轮滑行,在25%~75%电制动工况下列车仅在冰雪接触条件下检测到了车轮滑行;车轮滑行导致了车钩力的波动,特别是中部机车发生车轮滑行时会引起其前、中、后部车钩力较大幅度波动,并增大中部机车前部车辆压钩力,严重影响列车的平稳运行;随着制动力的降低,低黏着接触状态下的车轮滑行对最大车钩力的影响明显减小。In response to the longitudinal impulse issue caused by wheel slip under low-adhesion contact conditions,this paper established a vertical-longitudinal coupled dynamics model for a 20,000-ton heavy-haul train in a‘1+1’formation.A comparative analysis was conducted to examine the impact of different wheel/rail contact states on the longitudinal impulse of the 20,000-ton train under electric braking conditions.The impact of wheel slip position and electric braking force loads on the longitudinal impulse was calculated separately.The results indicate that under electric braking operation,wheel slip was detected for the train under wet,oily and icy contact conditions when the train applies 100%electric braking force.In contrast,under 25%~75%electric braking conditions,wheel slip was only detected when the train under icy contact conditions.Wheel slip led to fluctuations in the coupler forces,particularly when wheel slip occurred in the middle locomotive,causing significant fluctuations in the coupler forces at the front,middle,and rear of the middle locomotive and increasing the coupler force at the front of the middle locomotive,thereby seriously affecting the smooth operation of the train.As the braking force decreased,the impact of wheel slip on the maximum coupler force reduced significantly under low-adhesion contact conditions.

关 键 词：重载列车 轮轨黏着 纵向冲动 再黏着防滑控制 

分 类 号：U292.921[交通运输工程—交通运输规划与管理]