踏面磨耗

机车轮对踏面磨耗的非接触光电检测方法研究

Research on Measurement of Wheel Set Tread Wear by Non-contact Optoelectronic Detecting Method

由于盘形制动功率大、摩擦系数稳定，同时还可减小车轮踏面磨耗，一般在速度高于120km、h的列车上普遍采用盘形制动。

However , the disc brake has larger power , its friction coefficient is stable , which can reduce the wheel tread wear .

通过统计分析车辆安全性指标、平稳性指标、磨耗功率以及轮轨作用力等参数，根据相应动力学标准，确定了CRH2型动车组轮对踏面磨耗的检修限度。

According to the dynamic standards , the maintenance limit of tread wear is proposed by statistical analyzing of safety index , stability index , wear power and wheel-rail force .

高速列车轮轨参数对车轮踏面磨耗的影响

Influence of wheel / rail parameters on wheel profile wear of high-speed train

提出了机车轮对踏面磨耗的一种非接触光电检测方法。

A non-contact optoelectronic measuring method of wheel set tread wear was researched .

车轮踏面磨耗及轮径差对高速动车组动力学性能影响研究

Study on the Influence of Wheel Tread Worn and Roll Radii Difference on EMU System Dynamics

车轮踏面磨耗和擦伤在线自动检测诊断系统探讨

A discussion on an automatic on-line system for the inspection and diagnosis of wheel tread wear and scratch

若转向架稳定裕度不充裕，则时常发生温升报警故障，踏面磨耗具有下凹型磨耗特征。

If the bogie stability margin is not abundant , axle horizontal force is larger , so the trailer frequent occur temperature alarm failure . At the same time , the tread wear has local hollow-type worn tread characteristics .

所以，独立轮对的使用对提高车辆运动的稳定性、通过曲线性能、降低车轮踏面磨耗和轮轨滚动接触疲劳是十分有益的。

The use of an independent wheelset in railway engineering can increases the motion stability of trains , the qualitative negotiation in curve lines , and also runs low tread the wear and rolling contact fatigue of wheel / rail effectively .

在真实轮轨接触摩擦力作用下，对于锥型车轮踏面-磨耗型新轨的接触外形，计算了钢轨表面不同长度的微裂纹在不同轴重下的裂尖应力强度因子及其应力。

Considered the real wheel-rail contact friction , the stress intensity factor at the crack tip and the stresses of " conical profile tread-new rail " was calculated for different lengths of rail surface micro-cracks and different axle loads .

车轮踏面下凹磨耗危害大应旋修

Harmful Concave Worn Wheel Tread Needing Turning

东风5型内燃机车已被广泛应用于大型机械化驼峰编组站，但作业时存在着轮箍踏面非正常磨耗严重的问题。

DF 5 diesel locomotives have widely been used at large mechanized hump marshalling stations .

该方法能自动判断被测轮对轮缘踏面是否因磨耗过限而需要镟修。

This method can automatically judge whether the wheel profile needs to repair because of wears and tears .

轮缘磨耗主要是轮轨相互作用的结果，而踏面上的凹槽磨耗可能主要由闸瓦制动引起。

The wheel flange wear is caused by the flange action of the wheel and rail , whereas the double-groove wear on tread may be mainly caused by the break shoe .

采用数值仿真方法研究了不同车轮踏面外形、轮对内侧距、轨底坡和车速对踏面磨耗深度和磨耗分布的影响。

Numerical simulation was used to study the influence of profile shape , vehicle speed , wheel back distance and rail cant on the wear depth and wear distribution of wheel profile .