悬挂式单轨车辆悬吊系统横向刚度优化设计与验证  

Optimal design and verification of lateral stiffness of suspension system for suspended monorail train

作　　者：黄晓翠 贾小平 傅茂海[3] 杨亮亮 HUANG Xiaocui;JIA Xiaoping;FU Maohai;YANG Liangliang(School of Automotive and Rail Communication,Nanjing Institute of Technology,Nanjing,Jiangsu 211167,China;Technology Center,CRRC Nanjing Puzhen Co.,Ltd.,Nanjing,Jiangsu 210031,China;School of Mechanical Engineering,Southwest Jiaotong University,Chengdu,Sichuan 610031,China)

机构地区：[1]南京工程学院汽车与轨道交通学院,江苏南京211167 [2]中车南京浦镇车辆有限公司技术中心,江苏南京210031 [3]西南交通大学机械工程学院,四川成都610031

出　　处：《机车电传动》2022年第5期9-16,共8页Electric Drive for Locomotives

基　　金：国家自然科学基金项目(61703200);南京工程学院校基金项目(QKJ201905)。

摘　　要：针对某悬挂式单轨车辆转向架二系弹簧设计空间受限导致的横向柔度不足问题,基于小摆角线性理论推导了四连杆悬吊机构等效回复刚度公式,并以此对悬吊机构几何参数进行优化设计,使整个悬吊系统横向刚度达到与地铁车辆二系空气弹簧相当的水平。结合实际悬挂式单轨车辆设计案例,采用多刚体动力学方法对四连杆悬吊机构开展运动学和动力学分析,总结了四连杆悬吊机构等效回复刚度公式的适用范围和局限性,并建立整车三维耦合动力学模型分析和检验了悬吊系统优化设计方案的有效性。结果表明,通过合理匹配四连杆悬吊机构几何参数的设计方案能够显著提高悬挂式单轨车辆的横向运行品质,但在车辆通过小半径曲线时会引起更多的车体动态偏移。Against the problem of insufficient lateral flexibility due to the design space limitation of secondary springs of the bogie for a suspended monorail train,an equivalent restoring stiffness formula was deduced from the linear theory of small swing angles for the four-linkage suspension mechanism.Based on the formula,the geometric parameters optimization of suspension system was completed,and the lateral stiffness of the suspension system was improved to the level equivalent to the secondary air spring used on metro trains.Combined with the actual design cases of suspended monorail trains,the four-link suspension mechanism was analyzed from the view of kinematics and dynamics using the multi-rigid-body dynamics approach.The applicability scope and limitation of the equivalent restoring stiffness formula were summarized,and a 3D coupling dynamics model for the whole train was established to analyze and verify the effectiveness of the optimized design solution of the suspension system.The results show that the design solution by reasonably matching the geometric parameters of the four-linkage mechanism can significantly improve the lateral riding quality of the train,but when the train passes through a small radius curve,it will cause more dynamic deviation of the train body.

关 键 词：悬挂式单轨车辆 四连杆 回复刚度 优化 城市轨道交通 仿真 

分 类 号：U232[交通运输工程—道路与铁道工程]