This paper, respectively, considers the nonlinear contact and Coulomb friction between rollers and rails, the characteristics of a hydraulic cylinder, and the contact characteristics between sleepers and ballast. The models of hydraulic cylinders are employed to realize the characteristics of hydraulic circuits and clamping forces. And the effects of the Coulomb friction between the track roller and the rail are simulated by calling the Boolean operation in the bond graph simulation software 20-sim. Based on the above analyses, this paper explores deeply which effect the pressures in the hydraulic cylinders and the hydraulic resistances of the flow passes at the inlets and outlets of the hydraulic cylinders will have on roller–rail contacts and working effects. As a result, the increase in pressure of the hydraulic cylinder will stabilize the roller–rail contact and improve the energy transmission efficiency. The increase in the hydraulic resistance value can enhance the working effect to some extent. With regard to the friction, there are four forms of frictional contact between the roller and the rail.

本文分别考虑了滚子与导轨之间的非线性接触和库仑摩擦，液压缸的特性以及轨枕与道ast之间的接触特性。采用液压缸模型来实现液压回路和夹紧力的特性。并通过在键合图模拟软件20-sim中调用布尔运算来模拟履带支重轮与轨道之间的库仑摩擦的影响。在以上分析的基础上，本文深入研究了哪些因素会影响液压缸中的压力，并且在液压缸的入口和出口处通过的流动阻力对辊-轨接触和工作效果都有影响。因此，液压缸压力的增加将稳定滚柱与导轨的接触并提高能量传输效率。液压阻力值的增加可以在某种程度上增强工作效果。关于摩擦，滚子和导轨之间有四种形式的摩擦接触。