2万吨重载列车牵引启动工况的纵向冲动分析  

Analysis of Longitudinal Impulse for 20000t Heavy Load Train in Traction Start-up Condition

作　　者：杨忠良 孙林平 马卫华[1] 罗世辉[1] 王波[1] Yang Zhongliang;Sun Linping;Ma Weihua;Luo Shihui;Wang Bo(State Key Laboratory of Rail Transit Vehicle System,Southwest Jiao Tong University,Chengdu 610031,China;Locomotive&Car Institute,China Railway,Beijing 100844,China)

机构地区：[1]西南交通大学轨道交通运载系统全国重点实验室,成都610031 [2]中国国家铁路集团有限公司机辆部,北京100844

出　　处：《动力学与控制学报》2024年第9期81-88,共8页Journal of Dynamics and Control

基　　金：国家自然科学基金资助项目(51575458);四川省科技计划项目(2021YJ0002)。

摘　　要：车钩是重载列车的传递纵向冲击的关键部件,车钩力大小对重载列车的运行安全具有重大影响.为分析2万吨重载列车在不同牵引工况启动时的车钩力的大小,基于列车纵向动力学理论、列车操纵方法以及钩缓装置动力学建模方法的基础上,建立了HXD1型机车和C80型运煤敞车编组的2万吨重载列车纵向动力学模型,分析了重载列车在不同牵引力、从控机车滞后及其不同车钩间隙时牵引启动的车钩力分布规律.通过分析可以得出:牵引力提升速度对稳态车钩力大小影响不明显,而牵引档位的增加,稳态最大车钩力明显增加,在保障列车能正常牵引启动的同时应减小牵引档位;随着主控机车与从控机车启动相差时间的增加,编组车辆中部及尾部的拉钩力增加,应尽可能地保障列车同步操纵;重载列车车钩间隙对启动时车钩拉力影响明显,应重视加强对车钩间隙的检修,同时配合牵引杆的使用可以降低车钩力.The coupler is an important component of the heavy-haul train,and the coupler force has a significant impact on the running safety of the heavy-haul train.In order to analyse the coupler force of 20000t heavy-haul train under different working conditions,based on the train longitudinal dynamics theory,train control method and the dynamic modelling method of the hook retarder,the longitudinal dynamics model of 20000t heavy-haul train assembled by HXD1 locomotive and C80 coal haulage converters was established to analyse the coupler force distribution law of heavy-haul trains running though different traction force,slave control locomotive lag and different coupler clearance.The results show that the lifting speed of traction force has no obvious effect on the steady-state coupler force under traction conditions,while the increase of traction gear significantly increases the steady-state maximum coupler force.The traction gear should be reduced while ensuring the normal traction and starting of the train.With the increase of starting time difference between the master locomotive and the slave locomotive,the pull force in the middle and tail of the marshelling vehicle increases,so the simultaneous operation of the train should be guaranteed as much as possible.The clearance of coupler has obvious influence on the tension of coupler during the start of heavy duty train.Attention should be paid to the maintenance of coupler clearance,and the coupler force can be reduced with the use of traction bar.

关 键 词：重载列车 牵引力 车钩间隙 牵引启动 车钩力 

分 类 号：U296[交通运输工程—交通运输规划与管理]