双悬浮架磁浮列车二系悬挂参数优化研究

Study on optimization of secondary suspension parameters of double suspension maglev train

空气弹簧作为车辆二系悬挂的关键部件,其性能直接影响车辆的舒适度和安全性。采用一种双悬浮架模块配合悬挂中置的轻型旅游磁浮列车为研究对象,通过建立其动力学模型,对比在不同水平刚度和垂向刚度工况下的动力学性能,根据车辆的舒适度、安全性及结构要求分析空气弹簧水平刚度和垂向刚度的最优范围,并分析不同车体质心高度对空气弹簧刚度选取的影响。结果表明,随着车体质心高度的增大,所需的空气弹簧水平刚度相应增大,对垂向刚度的选取则无明显影响。

As a key component of the vehicle’s secondary suspension,the performance of air springs directly affects the comfort and safety of the vehicle.Using a double suspension frame module with mid-set air springs as the research object,the light tourist maglev train dynamic model was established,and comparing the dynamic performance under different horizontal and vertical stiffness conditions,according to the comfort,safety and structural requirements of the vehicle,the optimal range of air spring horizontal stiffness and vertical stiffness was analyzed,as well as the influence of different vehicle body mass center heights on the selection of air spring stiffness.The results show that as the height of the center of mass of the vehicle body increases,the required horizontal stiffness of the air spring increases correspondingly,but the selection of the vertical stiffness has no obvious effect on it.