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扇形可倾推力轴承结构参数对润滑特性影响分析.docx

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扇形可倾推力轴承结构参数对润滑特性影响分析 Title:AnalysisoftheImpactofStructuralParametersontheLubricationCharacteristicsofTilting-PadThrustBearings Abstract: Tilting-padthrustbearingsarewidelyusedinvariousrotatingmachineryapplications,wheretheyplayacriticalroleinsupportingaxialloadswhileallowingrotation.Thelubricationcharacteristicsofthesebearingsareofutmostimportance,astheydirectlyinfluencetheoverallperformanceandreliabilityofthemachinery.Thispaperaimstoanalyzetheimpactofvariousstructuralparametersonthelubricationcharacteristicsoftilting-padthrustbearings,providinginsightsintothedesignandoptimizationoftheseessentialcomponents. 1.Introduction: Tilting-padthrustbearingsconsistofmultiplepadsarrangedinacircularpattern,whichcantiltinresponsetochangesinaxialloads.Thetiltingmotioncreatesahydrodynamicwedgeoflubricatingfilmbetweenthepadandthethrustcollar,reducingfrictionandwear.Thestructuralparametersinvolvedinthedesignoftilting-padthrustbearingsincludepadshape,padsize,padtiltangle,padclearance,andnumberofpads.Understandingtheinfluenceoftheseparametersonthelubricationcharacteristicsiscrucialforoptimizingthebearingdesignandensuringitsefficientoperation. 2.PadShape: Theshapeofthebearingpadshasasignificantimpactonthelubricationcharacteristics.Variouspadshapes,suchascircular,elliptical,andsemi-circular,havebeenusedinthrustbearings.Circularpadsofferuniformpressuredistributionandarerelativelyeasytomanufacture.Ellipticalpadsprovideimprovedloadcapacityandbetterself-aligningcapability.Semi-circularpadsarecommonlyusedinhigh-speedapplicationsduetotheirbetterstability.Thechoiceofpadshapeshouldconsiderthespecificrequirementsofthemachineryandthedesiredlubricationcharacteristics. 3.PadSize: Thesizeofthebearingpadsdirectlyaffectstheloadcapacityandlubricatingfilmthickness.Largerpadsgenerallyofferhigherloadcapacitybutmayalsoleadtoreducedfilmthickness.Smallerpadsshowbetterlubricationperformancebuthavelimitationsinloadcapacity.Findingtherightbalancebetweenloadcapacityandlubricationeffectivenessiscrucialinselectin