制动工况关门车位置对全列空车安全性影响  

Effects of the Marshalling Position of Vehicles without Braking Function on the Safety of Empty Freight Trains While Braking

作　　者：蒋益平 池茂儒[2] 杨春辉[1] 朱海燕 JIANG Yi-ping;CHI Mao-ru;YANG Chun-hui;ZHU Hai-yan(School of Mechatronics & Vehicle Engineering, East China Jiaotong University, Nanchang 330013, China;Traction Power State Key Laboratory, Southwest Jiaotong University, Chengdu 610031, China)

机构地区：[1]华东交通大学机电与车辆工程学院,南昌330013 [2]西南交通大学牵引动力国家重点实验室,成都610031

出　　处：《科学技术与工程》2021年第14期5981-5987,共7页Science Technology and Engineering

基　　金：国家自然科学基金(51665015);江西省教育厅重点项目(GJJ170358)。

摘　　要：在既有线货物列车提速背景下,为研究关门车(关闭制动支管截断塞门从而不起制动作用的车辆)编组位置对全空货物列车安全性的影响,根据车辆系统动力学理论和车辆-轨道耦合动力学理论,建立了列车-轨道耦合系统动力学模型,分析了制动初速从80 km/h提到90 km/h时,关门车编组在全空货物列车的前、中、后三部分时,货物列车的轮轴横向力、脱轨系数、轮重减载率等安全性指标,并与无关门车时的动力学安全性指标进行了对比,结果表明:在常用制动工况下列车中有无关门车时,安全性相差不大,且均满足《机车车辆动力学性能评定和试验鉴定规范》(GB/T 5599—2019)标准要求;关门车的安全性能与正常车辆相比,差异不明显;关门车位于列车头部时,轮轴横向力和脱轨系数略大于位于其他部位时的情况;关门车位于列车中部、后部时,动力学性能相差不大。Under the trend of speeding up of freight trains on existing railway,in order to study the influence of the position of vehicles without braking function because of closed the cut-off cock thus to cut off the connection between the vehicle brake pipe and the train brake main pipe on the safety of empty freight trains,a dynamic model of the train-track coupling system was established based on the theory of vehicle system dynamics and the theory of Vehicle-Track coupling dynamics.And the safety indicators of the empty freight train’s lateral wheelset force,derailment coefficient,and wheel unloading rate were analyzed and compared with the dynamic safety indicators of the empty freight trains with braking function,while the vehicles without braking function located in the front,middle and rear parts of the empty freight train with the initial braking speed increased from 80 km/h to 90 km/h.The results show that during the service brake conditions,whether there are vehicles without braking function or not,the safety performance of the empty freight train is not much different,and they all meet the requirements of the specification for dynamic performance assessment and testing verification of rolling stock(GB/T 5599—2019)standard of and the safety performance of the vehicles without braking function are not significantly different from that of the normal vehicles,the lateral wheelset force and the derailment coefficient are slightly greater than those in other parts while the vehicles without braking function located at the front part of the train,and the dynamic performance is not much different when the vehicles without braking function located in the middle and rear of the train.

关 键 词：关门车 编组位置 全列空车 安全性 

分 类 号：U271[机械工程—车辆工程]