论文部分内容阅读
介绍用轮轨摩擦试验装置测量摩擦因数的基本原理及试验装置的组成部分,通过测量车轮空载转动的阻力、不同车轮转速下受不同载荷转动基本停止所需制动力的值以及计算对应的制动扭矩,得出不同载荷下制动力以及相应摩擦因数的整体趋势。结果表明:不同载荷和速度下轮轨间的摩擦因数基本处于0.16~0.18之间,与轮轨材质钢和铸铁滑动摩擦因数一致,并验证了在摩擦区域温度越高摩擦因数越小以及车轮制动力与载荷成正相关关系。因此,用轮轨摩擦试验装置测滑动摩擦因数的方法接近实际工况,适用于不同材质组合的摩擦因数的测量。
This paper introduces the basic principle of measuring the friction coefficient with wheel and rail friction test device and the components of the test device. By measuring the resistance of wheel no-load rotation, the value of braking force required by different load rotation under different wheel speeds and the corresponding system Dynamic torque, draw the braking force under different loads and the overall trend of the corresponding friction factor. The results show that the friction coefficient between the wheel and rail under different loads and speeds is basically between 0.16 and 0.18, which is consistent with the sliding friction coefficient of the wheel and rail material steel and cast iron. It is also verified that the friction coefficient increases with the increase of the friction coefficient, Power and load into a positive correlation. Therefore, the wheel-rail friction test device measured sliding friction factor approach to the actual conditions, suitable for different combinations of materials friction factor measurement.