Aiming at a certain NGW planetary reducer with high power and high speed

the method of convergence mass is adopted to simplify the parts of reducer as convergence mass

the connection of each part

parts and rack is simplified to elastic part

and the total system is simplified to a spring-mass system.In the modeling process

the mass center of gear and planet carrier component vibration displacement along lateral orientation and longitudinal orientation is considered

and the retortion-lateral vibration coupling model is built.Through solving dynamic differential equations

the each order inherence frequency and corresponding each resonance speed which representing the system dynamics characteristic is obtained.According to the design rotating speed

the rationality of reducer each structure parameter is verified.