风电机组变桨轴承载荷与疲劳寿命分析

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中图分类号：TH133.3 文献标志码：A 文章编号：2095-2945(2025)14-0091-04

Abstract:Basedontheanalysisoftheloadandfatiguelifeofthepitchbearingofwindturbines,theanalysistheoryof the racewayloadofthepitchbearingisfirstintroducedandamechanicalanalysismodelisconstructed.Thenusingthisodelthe changesintheracewayloadofthepitchbearingwhenthecontactangleischangedandtheclearanceisadjustedareanalyzed, andtherelationshipsbetween thesetwoparameters haveposiveandnegativeefectsontherollingloadofthepitchbearingare summaried.Thenthenominalstressmethodandlocalstressmethodareusedtoanalyzethefatiguelifeofthevariablepitch bearing.Itisfoundthatthefatiguelifeofthebearingislargeunderbothmethods.Itisfoundfromtheanalysisofthefactors affectingbearingfatiguelifethattheracewayhardenedlayerandracewaysufaceroughnessaretwoimportantinfluencingfactors. Increasingtheracewayhardenedlayerandreducingtheracewaysurfaceroughnesswillhelpimprovethefatiguelifeof pitch bearings;therefore,itis hopedthat thisresearch canprovide reference for theoptimal design of pitch bearings.

Keywords:windturbine;variableblade bearing;raceway load;fatiguelife；mechanical analysismodel

在风电行业高速发展的时代背景下，风电轴承的研究逐步深入。（剩余8034字）