摘要
开发了一种主副构架弹性铰接的新型城市轨道交通车辆转向架,其轮对定位采用不对称悬挂,主构架上轮对纵向定位刚度小,副构架上轮对纵向定位刚度大。此新型转向架具有主动径向功能:转向架正向通过曲线时,作动器动作使得副构架相对主构架产生弯折角,并带动其轮对处于径向位置,提高了曲线通过性能;转向架反向通过曲线时,利用主构架轮对自身的导向特性实现曲线通过。此种转向架的曲线通过性能大大提高,并同时兼顾了其直线运行稳定性。
A new bogie of rail vehicle equipped with two frames coupled by a pair of flexible joints is designed, which adopts unsymmetrical primary suspensions, the longitudinal stiffness of wheel is set to be soft on the main frame, while the hard longitudinal stiffness is on the subframe. Active radial function is implemented on this new bogie, the angle around Z-axis between the main frame and sub-frame becomes larger with the performance of actuator when bogie moves forward through a curve, the action will lead the wheel on sub-frame to radial position, enhancing the curving performance. The steering characteristics of wheel itself on main frame is fully used when bogie moves backward through a curve. In conclusion, the curving performance of this new bogie is increased significantly and the stability is balanced as well.
出处
《城市轨道交通研究》
北大核心
2016年第12期1-5,共5页
Urban Mass Transit
基金
国家科技支撑计划项目(2015BAG12B01-21)
