【摘要】 为了阐明机车驱动系统弹性架悬对改善机车的横向动力学性能的机理,建立具有10自由度的驱动系统弹性架悬的机车单转向架横向动力学模型,比较不同的驱动系统悬挂形式和参数,对机车横向稳定性和轮对轮轴横向力的影响,并从动力吸振角度解释这一现象。结果表明:驱动系统相对构架横向及摇头振动转移了构架的振动能量,减小了构架的蛇行运动幅值,从而提高了机车横向稳定性并减小轮轴横向力;当驱动系统横向悬挂频率接近于轮对蛇行运动频率时,机车横向动力学性能最佳;驱动系统较小的横向悬挂阻尼,有利于提高机车的横向稳定性和减小轮轨动作用力,当阻尼比为0.2～0.3时,弹性架悬显著减小了轮轴横向力。最后利用反共振理论给出了驱动系统横向悬挂刚度的选取原则和规律。更多还原

【Abstract】 The driving system elastically suspended on the bogie frame is conducive to the lateral dynamics performance of the locomotive.In order to clarify the mechanism,a bogie dynamics model with 10 degrees of freedom which includes the elastic driving system was established.The lateral stability and lateral force of the wheelset were analyzed with different suspension structures and parameters of the driving system,and those phenomena were made clear in view of dynamic vibration absorption.The results show that according to lateral vibration and yawing of the driving system relative to the bogie frame its vibration energies are transferred,which reduces the amplitude of frame hunting,thus improving the lateral stability and reducing lateral forces of the wheelset.When lateral suspension frequency of the driving system is close to the hunting frequency of wheelset,the lateral dynamic performance of locomotive is optimum.The smaller lateral suspension damping is helpful to improve the lateral stability of the locomotive and reduce the W/R dynamical forces.With the damping ratio of elastic suspension from 0.2 to 0.3,the lateral forces of the axle can be reduced significantly.Finally,the reasonable selection for lateral suspension stiffness of the driving system is proposed using the anti-resonance theory.更多还原