Influence of Backlash on Load Sharing and Dynamic Load Characteristics of Twice Split Torque Transmission System

Affiliation of Author(s):机电学院

Journal:JOURNAL OF VIBRATION ENGINEERING & TECHNOLOGIES

Key Words:Face gear Split torque Load sharing Dynamic load coefficient

Abstract:Introduction Based on the characteristics of the helicopter main reduction gearbox, and combined with the advantages of face gear and cylindrical gear power dividing, a new configuration of helicopter main gearbox with twice split paths is proposed. A bending-torsional coupled dynamic model of the system is developed through the lumped parameter method, and the influence of stiffness, damping and backlash are considered. Methods The dynamic equation is solved by Runge-Kutta method, and the load sharing and the dynamic load coefficients are obtained, as well as their variation with the backlash. Results Results show that with the increase of the backlash, the load-sharing coefficient decreases, the dynamic load coefficient increases, but the other drive stages are almost unaffected. Compared with split torque stages and power confluence stages, the load sharing and dynamic load coefficient of power input stages are the most sensitive to the backlash of the power input stage, and the appropriate increase of the backlash can effectively improve the dynamic properties. Conclusion Therefore, in order to obtain better dynamic performance, it is necessary to allocate the backlash reasonably.

ISSN No.:2523-3920

Translation or Not:no

Date of Publication:2019-12-01

Co-author:XT21307,zrp,lfx

Correspondence Author:jgh

Date of Publication:2019-12-01