中心构件浮动对行星传动系统均载特性的影响

为探讨2K-H行星齿轮传动系统的均载性能,建立了考虑时变啮合刚度、综合啮合误差等非线性因素的平移-扭转耦合动力学模型,推导了系统的无量纲化18自由度的微分方程组。通过求解微分方程组,分析中心构件的支承刚度以及间隙浮动对行星轮系均载性能的影响。结果表明,在一定范围内,随着中心构件支撑刚度的减小与轴孔间隙的增大,构件的浮动量增大,系统的均载系数减小。

Influence of Center Component Floating on the Load-sharing Characteristic of Planetary Transmission System

In order to investigate the load-sharing performance of the 2K-H planetary gear transmission system,a translation-torsion coupling dynamics model is established with considering the nonlinear factors of time-varying meshing stiffness and the overall meshing error and so on,the dimensionless differential equations with 18 degrees of freedom of the system are deduced in this model.By solving the differential equations,the in.fluences of the support stiffness of the center component and the clearance floating on the load-sharing perfor.mance of the planetary gear train are analyzed.It is shown that the floating amount of the component increases with the reduction of the support stiffness of the center component and the increase of the clearance of the shaft hole within a certain range,the load-sharing factor of the system decreases when the floating amount of the com.ponent increases.