中间车轴自由横动量对A-1-A架悬动车的影响  

Influence of the Free Lateral Displacement of the Middle Axle Bearing on A—1—A Power Car with the Motor Mounted on the Frame

作　　者：罗赟[1] 杨勇军[2] 张红军[1] 张开林[1] 

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]中国南车集团戚墅堰机车有限公司产品设计部,江苏常州213011

出　　处：《中国铁道科学》2009年第3期91-96,共6页China Railway Science

基　　金：长江学者和创新团队发展计划资助项目(IRT0452);国家重点实验室自主研究资助项目(2008TPL_T05)

摘　　要：针对A-1-A轴式架悬动车运用条件发生的变化，为了设置合理的中间车轴轴承的横向自由间隙（即中轴自由横动量），采用多刚体动力学软件SIMPACK建立了动车动力学模型，比较中轴自由横动量对动车非线性稳定性、直线运行横向性能、曲线通过性能和曲线外轮磨耗功的影响。研究表明：当动车运行线路以曲线半径200-300m的小半径曲线为主时，为了改善曲线通过性能和降低轮轨横向力，中轴自由横动量应在10～14mm;当动车运行线路以曲线半径500~800m的曲线为主时，为了均衡第1轮对和第2轮对的磨耗，中轴自由横动量应在6～8mm。Since the application conditions of the power-car with four driving equipment mounted m the frame of six axles （i. e. A--1--A） have changed, in order to set the reasonable axial free clearances for middle axle box bearings （namely the free lateral displacement of the middle axle）, a dynamics model of the power car is established by adopting the multi-rigid-body dynamics software SIMPACK. The nonlinear stability, the lateral performances on tangent tracks, curve negotiation performance, and the wear work between outside wheel and rail on curving of the power car are compared with different middle axial free movements. The analysis indicates that when the power car runs on lines mostly with smaller curvature radius of 200-300 m, for modifying its curve negotiation performance and reducing wheel rail lateral force, the axial free movements of the middle axles should be 10-14 mm. When it moves on lines with smaller radius of 500-800 m, in order to balance the wear of first and the middle wheelsets, the free lateral displacement of the middle axle should be 6~8 mm.

关 键 词：车轴轴承 自由横动量 A-1-A轴式 动车 动力学 

分 类 号：U266.2[机械工程—车辆工程] U260.33[交通运输工程—载运工具运用工程]