A型地铁车辆车轮多边形磨损成因初探  

Preliminary Analysis of Mechanism of Wheel Polygon Wear of Type A Metro Vehicle

作　　者：杨晓璇 李伟 陶功权 温泽峰[1] YANG Xiaoxuan;LI Wei;TAO Gongquan;WEN Zefeng(State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, China)

机构地区：[1]西南交通大学牵引动力国家重点实验室

出　　处：《机械制造与自动化》2019年第4期22-25,共4页Machine Building & Automation

基　　金：国家重点研发计划项目(2017YFB1201103-08)

摘　　要：针对国内某A型地铁车辆振动噪声大的情况,对车轮表面状态进行了勘查,发现车轮普遍存在多边形磨损现象。为探寻车轮多边形磨损的形成机理,计算了轮对的自由模态,并开展了车辆零部件的振动试验。研究表明:轮对扭转和1阶弯曲共振模态是车轮多边形磨损形成的主要原因;车辆在通过梯形轨枕轨道时极易激发轮对的1阶弯曲模态,该线路大量使用梯形轨枕轨道是车轮多边形磨损现象频发的环境诱因。Aiming at vibration and noise of type A metro vehicle in China, the surface condition of the wheel is investigated and it is found that the polygonal wear occurs on the wheels. To explore the mechanism of the polygon on wheels, the free motion of the wheelset is calculated and the vibration test of the vehicle components is carried out. The results show that the torsion and the first-order bending resonance modes of the wheelset are the main reason for the polygonal wear of the wheels. The first-order bending mode of the wheelset can be excited easily when the vehicle passes the ladder sleeper track, which is the environmental incentives to the polygonal wear of the wheels.

关 键 词：地铁车辆 车轮多边形磨损 模态 振动试验 

分 类 号：U27[机械工程—车辆工程]