双路功率分流传动系统的静态均载特性分析  

Static load sharing characteristics analysis for power split transmission system

作　　者：董皓[1,2] 方宗德[2] 杜进辅[2] 

机构地区：[1]西北机电工程研究所,陕西咸阳712099 [2]西北工业大学机电学院,西安710072

出　　处：《哈尔滨工业大学学报》2013年第9期94-99,共6页Journal of Harbin Institute of Technology

基　　金：国家自然科学基金资助项目(51175423)

摘　　要：为了解决双路功率分流系统的载荷均匀分配的问题,建立该系统的力学模型.首先,采用轮齿几何接触分析和承载接触分析方法对齿轮副实际啮合过程进行仿真,得到齿轮副的时变啮合刚度,提高了计算的精确度,然后,根据系统构成功率流闭环的特点推导出系统的变形协调条件,并结合力矩平衡方程和弹性支撑条件计算各齿轮副传递的扭矩,得到系统的均载系数,最后,分析了浮动轮基于花键间隙和径向限位环约束浮动时对均载特性的影响.结果表明:误差对系统均载特性共同起作用,单独减小某一误差的影响,并不能完全达到均载,基本构件浮动有利于提高均载性能.通过花键间隙和径向限位环的辅助均载作用明显改善了系统的均载特性.与相关实验数据对比,验证了该方法的正确性.To implement the uniform load distribution of the power-split transmission, a pseudo static model is built. First, according to the method of theoretical analysis of tooth contact analysis （TCA） and loaded tooth contact analysis （LTCA）, the actual meshing process of each gear pair is simulated, and the fitting curves of time-varying mesh stiffness are obtained, which can improve the numerical precision. Next, according to the closed-loop characteristic of system power flow, the conditions for deformation compatibility of torsion angle are proposed, which are then combined with the torque equilibrium conditions and elastic support conditions to calculate the transmission torque of each gear pair. Finally, the load-sharing coefficient of the system is obtained, and the influence of the floating pinion based on spline clearance floating and constrained by the radial spacing ring is analyzed. The results show that the errors collectively influence the load sharing characteristics, only reducing a certain error never fully reach the perfect loading sharing characteristics. The floating component can significantly improve the load sharing characteristics. By comparing the theoretical data with the experimental data, the correctness of the method proposed is verified.

关 键 词：功率分流 承载接触分析 变形协调 力矩平衡 间隙浮动 限位环 均载 

分 类 号：TH132.4[机械工程—机械制造及自动化]