中文摘要：

大轴重机车牵引重载列车是世界铁路货运发展的主流趋势.随着载重吨位的增加,机车牵引功率不断提高,对轮轨间传递载荷提出了更高要求,迫切需要深入研究轴重增大后的粘着利用.在启动工况下针对影响2C0机车粘着利用率的因素进行了研究,考虑了车体、前后转向架的浮沉和点头,主要分析了一、二系垂向刚度、二系支撑间距、轴距、牵引销高度对粘着利用率影响.结果表明：机车粘着利用与一二系悬挂刚度及二系悬挂纵向间距联系紧密,而与转向架轴距关系不大.采用一系硬、二系软的悬挂有利于降低机车轴重转移,而加大二系悬挂纵向间距能够改善轮对粘着利用.

英文摘要：

The axle load of locomotive traction heavy-duty train is the mainstream trend in the development of railway freight transportation in the world.With the increase of deadweight, constantly the locomotive traction power also improves, puting forward higher requirements on load transmission between wheel~rail, and urgent needs to further study the adhesion use after the axle load increases. It studied on the influence of adhesion availability under starting working condition~ Bouncing vibration and nodding vibration of car body and bogie were considered~ Factors such as the stiffness of prima~y and secondary suspension, longitudinal support of secondary suspension, wheelbase, traction height were analyzed. The analysis results show that the stiffness of primary and secondary suspension, longitudinal support of secondary suspension, traction height have an closed connection with adhesion availability but hardly with wheel base of bogie. Using harder primary and softer secondary suspension or larger longitudinal support of secoudary suspension also contribute to improving adhesion availability.