关键词: 封闭式人字齿轮行星传动；固有特性；科氏惯性力；离心惯性力；频率分岔

Abstract:

A rotational and translational vibration model including the coupling between two stage trains was established to predict the natural modes of encased differential herringbone gear train. Vibration modes of this gear train were classified into rotational mode, translational mode of differential stage, translational mode of encased stage, planet mode of differential stage and planet mode encased stage. The natural frequencies were calculated by considering the Carioles inertial force and centrifugal force and the influence of rotating speed on natural frequencies was evaluated. The results show that the frequencies of translational mode in encased stage bifurcate while the rotating speed increases. 

Key words: encased differential herringbone gear train, vibration mode, Carioles inertial force, centrifugal force, frequency bifurcation