新型160km·h^(-1)集装箱专用平车动力学性能分析  

Analysis of the Dynamic Performance of the New-Type 160 km·h^(-1) Special Container Flat Car

作　　者：孟宏[1,2] 翟婉明[1] 王开云[1] 安卫 

机构地区：[1]西南交通大学牵引动力国家重点实验室,四川成都610031 [2]南车二七车辆有限公司产品开发部,北京100072

出　　处：《中国铁道科学》2009年第6期91-96,共6页China Railway Science

基　　金：国家"八六三"计划项目(2007AA11Z239);"天府英才"工程自主创新资助项目(2)

摘　　要：针对研制中的时速160 km新型快速集装箱专用平车存在的横向运动稳定性差、对线路的动力作用相对较大等问题,提出如下4项改进措施优化车辆设计。①采用增大车体抗扭刚度和侧滚转动惯量的侧墙结构;②一系悬挂采用单拉杆加钢弹簧结构的弹性定位方式;③适当减小二系悬挂的横向刚度;④选择常接触弹性旁承参数时兼顾车辆的横向运动稳定性和曲线通过性能。建立平车与轨道动态相互作用分析模型,并采用机车车辆—轨道耦合动力学仿真分析软件分析改进后时速160 km新型快速集装箱专用平车的动力学性能。仿真结果表明:改进后的时速160 km新型快速集装箱专用平车具有良好的横向运动稳定性、曲线通过性能和直线运行平稳性,轮轨动力作用较低;以时速50 km侧向通过12#固定辙叉道岔和以时速160 km通过轨道低接头时,对线路的动力作用均满足设计规范要求。In view of the problems existed in the new-type 160 km·h^-1 special container flat being developed, such as the poor lateral motion stability and greater dynamic action upon the track, etc. , the following four countermeasures were proposed to optimize vehicle design. （1） The structure of wagon with side- wall should be used possibly to enlarge the anti-torsion stiffness and the roll moment of inertia of car body. （2） The elastic alignment of the primary suspension should be composed of the single link and steel springs. The lateral stiffness of the secondary suspension should be decreased properly. （3） The parameter optimization of the constant contact side bearing should take into account the lateral motion stability and the curve negotiation performance. The analysis model of flat-car/track dynamic interaction was built, and the dynamic performance of the new-type 160 km · h^-1 special container flat car was analyzed by using vehicle- track coupling dynamics simulation software. Simulation results show that the improved special container flat car not only has better lateral motion stability, the curve negotiation performance and linear motion stability, but also has low wheel/rail dynamic interaction on the existing railway lines. The wheel/rail dy- namic interaction can both meet the requirements defined in the design criteria when passing through No. 19 fixed frog turnout with the speed of 50 km· h^-1 and a dipped rail joint with the speed of 160 km · h^-1.

关 键 词：集装箱专用平车 动力学性能 优化设计 临界速度 轮轨动力作用 

分 类 号：U272.66[机械工程—车辆工程]