Dynamic Analysis Of ET200 Two-speed Gearbox Planetary Gear Train

In recent years,environmental pollution,energy crisis and other issues are increasingly paid attention to by people,new energy vehicles gradually lead the changes in the automotive industry,electric vehicles equipped with automatic gearbox can effectively solve the poor acceleration performance,short range and other problems,gearbox research and promotion has a good development prospect.In order to solve the problems of power and economy of electric vehicles,a new twospeed automatic transmission was designed,and the structural characteristics and working principles of transmission components were analyzed.The curve of the output angular velocity and angular acceleration of the system is obviously periodic,and the error between the simulation analysis and the theoretical result is 0.6%;there is a 90° phase difference between the radial and tangential meshing forces of the sun gear and the planet gear,and the planet gear contact The force meets the force balance relationship,which is consistent with the theoretical analysis,which proves the correctness and reliability of the structural design of the ET200 two-speed gearbox.By establishing the dynamic equation of the planetary gear system of the gearbox,the influence of the flexibility of the system structure on the dynamic meshing force of the gear teeth is solved,and the factors affecting the transmission of the mechanism and the system vibration are analyzed;The flexibility of the planet carrier has the least influence on the vibration of the planetary gear system.In conclusion,the dynamic simulation study of planetary gear train mechanism of twogear transmission of ET200 electric vehicle and the influence of structural flexibility on the vibration of the transmission system were carried out,which provided certain reference value for studying the transmission characteristics and dynamic analysis of this kind of transmission.Figure 42;Table 4;Reference 68...