Study on the load-sharing characteristics of face-gear four-branching split-torque transmission system

Dong Hao,Zhang Hao-Qin,Zhao Xiao-Long,Duan Ling-Ling

doi:10.1177/16878140211009984

Dong Hao, Zhang Hao-Qin + Show 2 more

Open Access

https://doi.org/10.1177/16878140211009984

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Abstract

In order to solve the load-sharing characteristics of face-gear four-branching split-torque transmission system (FGFBSTTS), the static load-sharing mechanical analysis model was established. In the model, the deformation coordination conditions of torsional angle and torque balance condition were considered. By using Loaded Tooth Contact Analysis (LTCA) technology of face gear and herringbone gear, the time-varying meshing stiffness was calculated. The influences of manufacturing errors, installation errors, I-stage pinion floating, II-stage pinion spline clearance floating, and radial limit ring clearance floating on the load-sharing characteristics are analyzed. The results show that the LTCA technology is more accurate to reflect the load-sharing characteristics of each meshing position. When the I-stage pinion and the II-stage pinion floated at the same time, the best load-sharing characteristics can be obtained. The load-sharing characteristics affected by manufacturing errors showed obvious periodic change. The radial limit ring plays a better auxiliary role in load-sharing characteristics. The theoretical results were compared with the experiments to verify the correctness of the theoretical analysis. The research results can provide a theoretical basis for the optimal design of the load-sharing structure, error control, and assembly of the face gear four branch transmission system.

Highlights

Li et al.[10] studies the load sharing of the input pinion floating under the static load sharing of the concentric face gear
In the research of these papers, most of the load sharing models are established to consider the fluctuation of the average meshing stiffness, which can not reflect the change of the meshing position points on the load sharing characteristics of the system
The load-sharing mechanics under the condition of floating factor is analyzed. It provides a theoretical basis for further optimization design of the system under uniform load

Summary

Introduction

Keywords Face gear, floating, load sharing, split-torque, errors The functional relationship between the load transmission errors and the torque is fitted, and the time-varying meshing stiffness of each pair of gears is obtained.

Results

Conclusion