Abstract
The meshing parameters and geometrical dimensions of a 2K-H multistage micro-planetary gearing transmission are calculated, and its motion is analyzed. On this basis the power flows of multistage micro-planetary gearing transmission are analyzed under two situations which are firstly considering the power loss and then without considering it by virtual power theory, the functional expression is established between the transmission efficiency and the characteristic parameter, the meshing friction coefficient, and the meshing angle of multistage micro-planetary gearing transmission. The research results show that with the increasing of the characteristic parameter, the transmission efficiency of multistage micro-planetary gearing transmission decreases under the meshing power loss coefficients are determined; with the increasing of the meshing power loss coefficient, the transmission efficiency of multistage micro-planetary gearing transmission decreases under the characteristic parameter is determined, There are differences that the transmission efficiency of multistage micro-planetary gearing transmission is affected by the gear meshing pairs power loss coefficient; with the increasing of the meshing friction coefficient, the transmission efficiency of multistage micro-planetary gearing transmission decreases under the characteristic parameter and the meshing angle are determined; with the increasing of the meshing angle, the transmission efficiency of multistage micro-planetary gearing transmission decreases under the characteristic parameter and the meshing friction coefficient are determined.
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