【摘要】 针对列车曲线通过安全性问题,设计了一种电磁增粘装置,通过增大轮轨间的垂向电磁吸力来增加轴重,从而改善列车曲线运行过程中的轮轨粘着关系,保障列车安全运行。在SIMPACK中建立CRH2型车动力学模型进行仿真分析,结果发现随着励磁电流的增加,列车曲线通过性明显改善。励磁电流的增大可以明显降低四个车轮的脱轨系数与轮轨垂向力和横向力,降低对钢轨的冲击力。在速度250～300 km·h^-1的高速运行工况情况下,装有电磁增粘装置的转向架对脱轨系数的改善效果明显,脱轨系数降低6%左右。更多还原

【Abstract】 Aiming at the safety problem of train curve passing, this paper designs an electromagnetic viscosity increasing device to increase the axle load by increasing the vertical electromagnetic attraction between the wheel and rail, thereby improving the wheel-rail adhesion relationship during the train curve operation and ensuring the safety of the train run. The dynamic model of the CRH2 car was established in SIMPACK for simulation analysis, and the result found that with the increase of the excitation current, the train’s curve passability improved significantly. The increase of the excitation current can significantly reduce the derailment coefficient of the four wheels and the wheel-rail vertical force and lateral force, and reduce the impact force on the rail. Under the high-speed operating conditions of 250～300 km·h^-1, the bogie equipped with electromagnetic viscosity increasing device has obvious improvement effect on the derailment coefficient, and the derailment coefficient is reduced by about 6%.更多还原