摘要
重载组合列车在长大下坡路段制动缓解时常常出现较大的车钩力,严重时会导致脱轨、断钩事故,威胁到行车安全。使用空气制动与纵向动力学联合仿真系统,计算了“神8+神8”,“神8+神12”与“神12+神8”三种列车编组在长大坡道制动缓解工况中不同的再生制动力分布对列车纵向冲动的影响。计算结果表明,在总再生制动力相同情况下,神12作为主控机车时缓解后最大拉钩力比神“8+神8”编组平均减小了12.6%,提出了车钩力降低的发生机理,长大坡道缓解时大再生制动力机车作为主控机车较为合理,为重载组合列车差异化控制提供了基础。
The excessive coupler force induced by locomotive regenerative braking force often occurs when a heavy haul combined train is releasing on a long steep ramp,and the overlarge coupler force may cause derailment and coupler fracture,threatening the security of train operation.Using the train air brake and longitudinal dynamics simulation system(TABLDSS),the influences of different locomotive regenerative braking force distribution of“S8+S8”,“S8+S12”and“S12+S8”train marshalling on the longitudinal impulse during braking and releasing process were simulated.The results show that,under the same total regenerative braking force,the maximum tensile coupler force of“S12+S8”marshalling is reduced by 12.6%than“S8+S8”marshalling.The mechanism of reducing coupler force was presented.It’s reasonable for reducing the tensile coupler force that a high-powered locomotive acts as main control locomotive during the train is releasing on the long steep ramp.The study provides a foundation for the differentiated control of heavy haul combined trains.
作者
晏新凯
魏伟
YAN Xinkai;WEI Wei(School of Locomotive and Rolling Stock Engineering,Dalian Jiaotong University,Dalian 116028,China)
出处
《振动与冲击》
EI
CSCD
北大核心
2021年第22期161-166,共6页
Journal of Vibration and Shock
关键词
纵向动力学
重载列车
再生制动力
车钩力
longitudinal dynamics
heavy haul train
regenerative braking force
coupler force
