一种单纵臂悬架轮边电驱动系统设计与分析

Design and Analysis of Electric Wheel Drive System for A Single Trailing Arm Suspension

为了进一步减少汽车簧下质量,采用电机等驱动组件布置于车架的方法,设计了一种单纵臂悬架轮边电驱动系统,同时采用中心距允许有一定变化范围的同步带和同步带轮传动作为其传动系统。对单纵臂几何关系模型建立相关参数关系式,并针对某一轮边驱传动系统进行具体参数计算,找到电机输出轴线中心与单纵臂位置关系以使主从动轮的中心距变化量最小。设计并搭建了同步带试验台架,进行了同步带拉力实验,得出了带轮张紧力随带轮中心距的变化关系曲线。通过实验验证了结构设计的可行性。

To further reduce unsprung mass of cars,motor and other drive parts are disposed on the frame.Electric wheel drive system for a single trailing arm suspension is designed.At the same time,transmission system with synchronous belt and synchronous pulley which allows pulley center distance to change in a certain range is used.Related parameters equation for single trailing arm geometry model is established.And parameters of a wheel drive transmission system are substituted into the equation.In this way,the positional relationship of the center axis of the motor output and single trailing arm suspension is found with the minimum center distance change of driving and driven pulleys.Synchronous belt test bench is designed and set up and the synchronous belt tension experiment is conducted.The variation curve of tensioning force of synchronous pulley and center distance of synchronous pulley is obtained.The feasibility of this structure design is proved by experiment.