Effect of Four Point Contact Slewing Bearing Groove Curvature Parameters on the Stress State

摘要

Applying the finite element method, the function of finite element analysis software Ansys Workbench is powerful. Analysis 30 groups of different groove curvature radius coefficient model in extreme condition, obtained in applying extreme working conditions, stress and deformation data. Analysis results show that the inner groove curvature coefficient is 0.525, the outer ring raceway curvature coefficient of bearing is 0.52 when the slewing bearing shows maximum carrying capacity. Calculation, results provide analysis basis for slewing bearing design.Wind power has become one of the main forms of utilization of energy in many countries around the world. According to the Global Wind Energy Association (GWEC) statistics, the global wind power installed capacity of the total installed capacity of wind power, reached 282.3GW in 2012. In 2013 China (excluding Taiwan), the new installed capacity is 16088.7MW, increased 24.1%. The total installed capacity is 91412.89MW, an increase of 21.4%. The new installed and the cumulative installed two data are ranked first shin the world. High growth of the wind power industry has put higher requirements to design and manufactur of relevant equipment. Slewing bearing is one of several key components of wind power equipment. It directly affects the efficiency, life, running status of wind power equipment, life, running status etc.. In general, wind power equipment work in the outdoor environment, bad working condition, such as temperature, humidity, dust. Those facts make the bearing's seal and lubrication difficulty. The load and big change of load make higher requirements to wind power bearing, so that the design of wind power bearing manufacturing technology has become an important and restrict factors for China's rapid development of wind power equipment