Investigation on the load sharing characteristic of a two-stage planetary transmission system involving relative floating between stages

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Journal of Vibration and Shock ›› 2021, Vol. 40 ›› Issue (14) : 77-84.

LU Chongshan，WANG Xiaosun，LENG Xiaolu，WU Shijing

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Abstract

The translation-torsion coupling dynamics equations of motion(EOM) were established for a two-stage planetary gear transmission system, using the lumped parameter method.The nonlinear factors such as time-varying mesh stiffness, backlash, comprehensive meshing error and relative floating between stages were considered.The EOM were solved by the numerical integration method, and the effects of the multi-error coupling and the relative floating clearance on the load sharing characteristic of the system were analyzed.The results show that the coupling effect of comprehensive meshing errors will deteriorate the system’s load sharing performance.The load sharing characteristic of the stage becomes worse when the comprehensive meshing errors are introduced by the components of this stage.The relative floating between stages can effectively improve the load sharing performance of the system and reduce the inter-stage coupling effect of component errors.Meanwhile, the first-stage load sharing performance of the system is improved with the additional consideration of the relative floating clearance in the EOM.

Key words

two-stage planetary gear train / translation-torsion coupling / integrated meshing error / relative floating between stages / load sharing characteristic

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LU Chongshan，WANG Xiaosun，LENG Xiaolu，WU Shijing. Investigation on the load sharing characteristic of a two-stage planetary transmission system involving relative floating between stages[J]. Journal of Vibration and Shock, 2021, 40(14): 77-84

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