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为了从理论上验证新型护轨在小半径曲线上的防脱、增稳和减磨作用,以列车-曲线轨道系统空间振动分析模型为基础,考虑新型护轨的结构特点及其与车轮、钢轨之间相互作用,建立带新型护轨装置的曲线轨道-列车系统空间振动分析模型.采用Fortran语言编制相应计算程序,利用现场试验结果验证本方法及程序的可靠性;分析新型护轨对系统空间振动响应的影响规律.计算结果表明:计算得出的护轨力分摊曲线外轨轮缘力比例达38.81%,与通过试验得到的新型护轨能够分摊33.3%~40.0%的曲线外轨轮缘力的结论相符;在试验工况及参数条件下,新型护轨可使车体、轮对及曲线外轨的横向位移分别减少28.62%,37.67%及14.64%,明显改善货物列车运行的平稳性.
In order to theoretically verify the anti-shedding, stabilizing and reducing effect of the new guard rail on the small radius curve, based on the analysis model of the space vibration of the train-curve rail system, considering the structural characteristics of the new guard rail and its relationship with the wheel, And establishes the model of space vibration analysis of curved track-train system with a new type of guardrail device.The corresponding calculation program is compiled by Fortran language and the reliability of the method and program is verified by the field test results. The effect of the new guardrail on the system space The results show that the ratio of the outer flange force of the outer wall of the force distribution curve calculated by the calculation reaches 38.81%, and the new type of guard rail obtained through the experiment can share the curve outer flange of 33.3% -40.0% The conclusion is that under the conditions of test and parameters, the new type of retaining rail can reduce the lateral displacement of the body, the wheelset and the curve outer rail by 28.62%, 37.67% and 14.64% respectively, which can obviously improve the stability of the cargo train operation. .