Influences of carrier assembly errors on the dynamic characteristics for wind turbine gearbox

摘要

Due to the existence of assembly errors, the dynamic characteristics of planetary gear system could be changed compared with the original ideal design. Considering the assembly errors of component, a bending-torsional-pendular coupled vibration model of the 1st helical planetary gear system in wind turbine gearbox was built using lumped parameter method. Then the variable step Runge-Kutta algorithm was applied to solve the dynamic model of helical planetary gear system. The effects of carrier horizontal assembly error, carrier axis assembly error and carrier spatial assembly error on the dynamic characteristics were investigated. Results show that the influence of carrier assembly error along the z-axis on the variations for DTE response of the system is worse than other axis error cases. The carrier assembly errors along the different directions tend to make the dynamic responses for dynamic mesh forces (DMFs) larger. The frequency responses for DMFs of helical planetary gear system are influenced comprehensively by carrier assembly errors along the different directions. The frequency positions of DMFs are reduced under carrier spatial assembly errors (<2000 Hz). (C) 2016 Elsevier Ltd. All rights reserved.