封闭行星齿轮传动系统的扭振特性研究

本文建立了封闭行星齿轮传动系统的扭振计算模型 ,模型中考虑了行星轮和星轮的啮合相位 ,行星架的弹性变形和负载惯性。用数值解法获得了在受周期性变化的齿轮啮合刚度和齿频综合误差激励下的齿轮啮合动载荷和在不同的输入转速下的动载荷系数。分析了在星形轮系和行星轮系动力耦合情况下齿轮系统的动态特性 ,得出了对封闭行星齿轮传动设计有意义的结论

A Study on Torsional Vibrations in an Encased Differential Gear Train

A torsional vibration model formulated by time varying mesh stiffness and composite gear errors was established to predict the dynamic characteristics of the encased differential gear train.The mesh phases of the planet and star gears,elastic deformation and load inertia of planet carrier were also taken into account.A numerical method was applied to solving the large parametrically excited dynamic system.From the numerical results it was concluded that the gear meshing forces of the planetary gear train mainly fluctuated in meshing frequency of the planetary gear train;but the gear meshing forces of the star gear train fluctuated not only at the meshing frequency of the planetary gear train but also at that of the star gear train.A maximal dynamic load occurred at the high frequency resonance.The dynamic load factor of the planetary gear train was larger than that of the star gear train in the work speed area.