两级星型五分支传动静态均载分析

Load-sharing characteristics of two-stage five-branching star gear by considering deformation coordination

为分析两级星型五分支传动系统的均载问题,根据该系统构成功率流动闭环的特点,推导扭转角变形协调条件,结合力矩平衡条件,运用当量啮合误差理论,建立静态条件下的均载力学分析模型,求解得到均载系数,分析制造误差、安装误差、构件浮动对均载特性的影响。结果表明:太阳轮、内齿圈、星轮的误差单独影响均载特性时,内齿圈的误差影响最大,各构件制造误差影响的均载系数随时间做周期变化;太阳轮基于花键间隙浮动和内齿圈径向浮动,改善了均载特性,通过试验验证了理论分析的正确性。

In order to analyze the load sharing of two-stage five-branching star gear, the coordination conditions of torsion angle deformation were derived according to the power flow close＆loop characteristics of the system. Based on the theory of moment equilibrium condition and equivalent meshing error, the load sharing model under static condition was established, and the load sharing coefficient was obtained. The influence of manufacturing error, installation error, component floating on load sharing characteristics was analyzed. Results show that when sun gear, ring gear and star gear error independently act on load sharing characteristics, the the ring gear error influence is the biggest. Each component manufacturing error periodically affect the load sharing coefficient. The sun gear floats based on spline clearance and radially in the ring gear, which helps to improve the load sharing characteristics. The correctness of the theoretical analysis is Verified by experiments.