基于不同车轮直径的轮轨接触关系问题  

Wheel-rail Contact Relation Based on Different Wheel Diameter

作　　者：张茂松[1] 李芾[1] 杨阳[1] 

机构地区：[1]西南交通大学机械工程学院,四川成都610031

出　　处：《机车电传动》2016年第6期30-34,共5页Electric Drive for Locomotives

摘　　要：针对不同车辆的车轮直径差异问题,研究了车轮直径对轮轨接触几何关系、轮轨接触斑、轮轨最大接触应力、蠕滑率、车辆稳定性以及轮轨磨耗等的影响。通过计算可以得出:随着车轮直径增加,左右车轮滚动圆半径差逐渐增大,等效锥度随着车轮横移量逐渐增大;接触斑面积逐渐变大,轮轨接触最大应力显著下降;轮轨的横向和纵向蠕滑率逐渐减少;车辆的稳定性变好,车辆过曲线时的磨耗变大。Aim at the wheel diameter difference problem, infl uence of wheel diameter on wheel-rail contact geometrical relationship, contact spot, the maximum contact stress, creepage, vehicle stability and wheel-rail abrasion was researched. The result of calculation showed that with the increase of wheel diameter： left and right wheel rolling radius difference increased, and the equivalent conicity gradually increased with the wheel sliding; the contact spot area became large and the maximum stress decreased signifi cantly; the wheel rail lateral and longitudinal creepage gradually decreased; the stability of the vehicle became better, and the wear became larger when the vehicle was over the curve.

关 键 词：车轮 车轮直径 轮轨接触关系 铁道车辆 

分 类 号：U260.11[机械工程—车辆工程]