西南交通大学学报2025，Vol.60Issue(2)：364-373,10.DOI:10.3969/j.issn.0258-2724.20220577
基于机电液耦合的钢轨打磨模型
Rail Grinding Model Based on Mechanical-Electric-Hydraulic Coupling
摘要
Abstract
Rail grinding occurs when the rail grinder is in traveling status,which is affected by the dynamic performance of the vehicle.Rail grinding is generally set as constant power grinding,involving a wheel-track contact relationship,wheel-track grinding relationship,hydraulic system,and control system.It is a mechanical-electric-hydraulic coupling process.The whole model of rail grinding based on mechanical-electric-hydraulic coupling was formed by considering the mechanical-electric-hydraulic coupling of the rail grinding process on the basis of vehicle-track coupling dynamics.This model included a vehicle-track coupling dynamics submodel,wheel-track contact submodel,grinding submodel,and hydraulic system submodel.This rail grinding model was validated by comparing it with experimental data.The results show that in vehicle-track dynamics model verification,the maximum deviation of derailment coefficient is 11.11%,and the maximum deviation of wheel unloading rate is 7.69%.The maximum deviation of the lateral force of the wheel is 11.68%.In hydraulic and control model verification,under 0.7 Hz and 1.7 Hz rail corrugation,the deviation range of pressure in the rodless cavity are between(-2.96%-2.92%)and(-0.32%-1.38%),and the deviation range of flow in the rodless cavity are between(-24.11%-0)and(-48.72%-0).In grinding model verification,the trend is generally consistent,with a deviation of 0.036 mm at the point of maximum deviation.The above deviations are all within the acceptable range,proving that this model can be applied to practical rail grinding study.关键词
钢轨打磨/动力学性能/机电液耦合/PID控制/赫兹接触Key words
rail grinding/dynamic performance/mechanical-electric-hydraulic coupling/PID control/Hertz contact分类
交通工程引用本文复制引用
曾鲁庆,崔大宾,李立..基于机电液耦合的钢轨打磨模型[J].西南交通大学学报,2025,60(2):364-373,10.基金项目
四川省科技计划(2021YJ0026) （2021YJ0026）
