HX_N5型内燃机车车轮非正常磨耗问题分析

针对HXN5型内燃机车在运营过程中出现的非正常磨耗问题展开研究,通过分析其试验数据,得出HXN5型机车非正常磨耗问题主要源自于机车一系导框间隙内的轮对定位刚度过小,由于导框间隙值设置较为合理,因此提出通过增大机车一系导框间隙内的水平定位刚度来改善车轮的非正常磨耗问题,建议刚度优化范围为0.54~0.72MN/m,最后对优化方案进行了动力学仿真分析,结果表明提高一系导框间隙内的水平定位刚度有利于提高机车横向稳定性,但会略微降低司机室的横向平稳性,对曲线段外轮脱轨系数影响不大。

Analysis of Abnormal Wear Problem of HXN5 Diesel Locomotive

Based on the abnormal wear problem of HXN5 diesel locomotive in the operating process, this paper draw a conclusion from the experimental data： the abnormal wear problem of HXN5 locomotive is mainly caused by the soft axle guiding stiffness in axle box play. Because the value of axle box play set to be reasonable, so put forward a solution to improve the abnormal wear problem that was increasing the axle guiding stiffness in axle box play, and suggested the stiffness optimization range from 0.54 to 0.72 MN/m. Finally, this paper made a dynamic simulation analysis for the optimization scheme, and the results show that increasing the axle guiding stiff- ness in axle box could play a beneficial role to increasing the lateral stability of locomotive, and improving the horizon ride index of the driver chamber slightly, but the stiffness does not much affect the derailment coefficient o{ outside wheel on curve passing.