行星传动动态均载特性分析

Analysis of Dynamic Load Sharing Behavior in Planetary Gearing

从动力学角度建立2K-H型行星传动系统的计算模型。针对各构件的制造和安装误差,运用当量啮合误差原理和动力学分析方法,推导行星传动的运动微分方程,建立系统的动力学分析模型,分析系统的动态均载特性和各误差的参数变化对系统均载特性的影响,此方法计算结果与已有试验结果十分吻合。分析结果表明,浮动太阳轮对系统的均载特性有很大的改善;装配误差和安装误差共同对系统的均载特性起作用,只减少某一个误差值达不到良好的均载效果;转速对系统的均载有较大的影响。

A calculative model for single stage planetary gear （type 2K-H） is presented with the dynamic way. In consideration of the manufacturing and assembly errors of parts, the vibratory equation of each planetary gear is found by using the theory of equivalent mesh error and equivalent mesh stiffness, and the dynamic analytic model is built. The load sharing behavior of each planetary gear is studied by using the theory of equivalent mesh error and equivalent mesh stiffness, and then the relationship between error and load sharing is analyzed. The calculation results are in good agreement with the known experimental results. The analysis results indicate that the floating sun-gear can improve the load sharing behavior greatly, and the assembly and fixing errors altogether react on the load sharing character. No good effect can be achieved by only decreasing one error. The rotating speed influences the load sharing greatly.