| An important part of the wind turbine is the gear box,which has a design life of more than 20 years.However,due to the poor practical use environment and other reasons,the gear box of the wind turbine often produces some faults,and the fatigue failure of the gear is the most common reason.Therefore,it is of great significance to study the fatigue life of the fan gear box to ensure the safe and reliable operation of the fan in practical use.In this paper,the fatigue life of high-speed helical gear pair of 2.5mw wind turbine gearbox is analyzed.By collecting real-time monitoring data of a wind field SCADA system for 20 days and selecting 4 types of data related to the analysis task,the actual input load history of high-speed helical gear pair of fan gearbox was deduced.In Solidworks,the establishment and simplification of 3d model of high-speed helical gear pair of fan gearbox are completed.The simplified model was imported into the finite element analysis software Ansys Workbench,and Ansys Workbench was used for the finite element analysis of high-speed helical gear pair of fan gearbox.According to the results of finite element analysis and load time history,the fatigue life of helical gear pair was analyzed by Ansys ncode designlife,and the factors affecting the fatigue life were analyzed.Analysis results show that the actual load time history,under the action of the fatigue life of helical gears meet the design requirements,the results of the analysis is consistent with the actual situation,the site of the most prone to fatigue failure distribution in the tooth mesh parts and root,the fatigue life analysis of the factors affecting the residual compressive stress,improve the helical gear pair to enhance the surface quality,can improve the fatigue life. |
PDF Full Text Request