风电主轴配对单列圆锥滚子轴承工作游隙分析

Analysis on Operating Clearance of Matched Single Row Tapered Roller Bearings for Wind Turbine Main Shaft

[目的]单列圆锥滚子轴承双支撑的主轴系结构在风电机组中得到了广泛的应用,确定合适的轴承工作游隙,对轴承和主轴系的可靠运行至关重要。[方法]以某中速永磁风电机组主轴系为研究对象,建立了轮毂、主轴、上风向轴承和下风向轴承一体化的动力学分析模型;计算得到了不同轴向游隙下,轴承滚道寿命、承载区域以及最大接触应力的变化趋势。[结果]确定了配对单列圆锥滚子轴承理想的轴向工作游隙范围为-0.74~-0.3 mm。[结论]研究结果对轴承和主轴系的可靠运行具有重大意义,为配对单列圆锥滚子轴承轴向工作游隙的确认提供了方法和参考。

[Introduction]The main shafting structure with double supports of single row tapered roller bearings has been widely used in wind turbines,and determining the appropriate bearing operating clearance is crucial for the reliable operation of bearings and the main shafting.[Method]A dynamics analysis model was established focusing on the main shafting of a medium speed permanent magnet wind turbine,incorporating the hub,main shaft,and both upwind and downwind bearing.The variation trends of bearing raceway life,load area,and maximum contact stress under different axial clearances were calculated.[Result]The ideal axial operating clearance range of matched single row tapered roller bearings has been identified as−0.74~−0.3 mm.[Conclusion]The research results have significant implications for the reliable operation of bearings and main shafting,providing a method and reference for determining the axial operating clearance of matched single row tapered roller bearings.