客货混运条件下轮轨匹配静态接触特性分析  

Analysis of wheel-rail static contact characteristics of passenger and freight mixed transportation

作　　者：那桐 温炳光 陶功权[1] 温泽峰[1] NA Tong;WEN Bingguang;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,四川成都610031

出　　处：《电力机车与城轨车辆》2022年第6期32-38,共7页Electric Locomotives & Mass Transit Vehicles

基　　金：国家自然科学基金项目(U21A20167);中国博士后科学基金项目(2021T140571)。

摘　　要：客货混运的铁路线路运行着具有不同车轮型面的动车组、机车、货运列车和普通客运列车,从而形成复杂的轮轨匹配关系。为研究不同车轮型面(LM、JM3、LMA、LMB10)与钢轨型面(60和60N)的静态匹配关系,分别从轮轨接触几何参数和轮轨静态接触力学特征两方面进行分析对比。计算结果表明:与60轨相比较,60N轨与LM、JM3、LMA车轮型面匹配时,接触光带更居中,接触点在钢轨横向分布范围较窄;接触应力略大;滚动圆半径差与接触角差均较小,具有更好的车辆运行稳定性;曲线通过能力有所降低。LMB10车轮型面与两种不同钢轨匹配时的轮轨静态接触特征相差不大。The railway line of mixed transportation of passenger and freight has EMUs,locomotives,freight trains and ordinary passenger trains with different wheel profiles,which lead to more complex wheel-rail matching relationship on the line.To study the static matching relationship between different wheel profiles (LM,JM3,LMA,LMB10) and rail profiles (60 and 60N),the wheel-rail contact geometry parameters and mechanical characteristics of wheel-rail static contact are analyzed and compared.The calculation results show that compared with the 60 rail profile,the 60N rail profile has the following characteristics while matching with the LM,JM3 and LMA wheel profiles:the contact band is more centered on the rail crown and the contact point has a narrow transverse distribution range in the rail;the contact stress is slightly larger;the rolling radius difference and the contact angle difference are smaller,which is better for the vehicle running stability;the curving performance is reduced.The static contact characteristics between the LMB10 wheel profile and two different rails are similar.

关 键 词：轮轨型面 接触几何 滚动接触 接触应力 

分 类 号：U211.5[交通运输工程—道路与铁道工程]