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TBM推进机构位姿误差分析 Title:ErrorAnalysisofTBMThrustBearingPositionandOrientation Abstract: ThesuccessofaTunnelBoringMachine(TBM)projectheavilyreliesontheprecisecontrolandaccuratepositioningofthemachine.OnecriticalcomponentthatplaysavitalroleintheTBM'sperformanceisthethrustbearing.Inthispaper,wepresentanin-depthanalysisofthepositionalandorientationalerrorsoftheTBMthrustbearing.Weanalyzethesourcesoftheseerrorsandtheirimpactonthemachine'soveralloperation.Furthermore,weproposepotentialsolutionsandstrategiestominimizetheseerrors,therebyenhancingtheperformanceandproductivityofTBMprojects. Introduction: TunnelBoringMachines(TBMs)haverevolutionizedtheconstructionindustrybyprovidinganefficientandcost-effectivemethodforexcavatingtunnels.TheprecisepositioningandorientationoftheTBMplayasignificantroleinensuringthesuccessfulcompletionofundergroundconstructionprojects.AmongthevariouscomponentsoftheTBM,thethrustbearingisparticularlycriticalasittransferstheaxialloadfromthecutterheadtothemachine'smainbody.However,thethrustbearingissubjecttoinherentpositionalandorientationalerrorsduetoseveralfactors,whichcannegativelyimpacttheTBM'soverallperformanceandefficiency.Hence,itisessentialtoanalyzeandunderstandtheseerrorstomitigatetheiradverseeffects. AnalysisofPositionalErrors: PositionalerrorsoftheTBMthrustbearingcanarisefromvarioussources,suchasmisalignmentintheassembly,inaccuratemeasurementtools,ordeformationsinthesupportingstructure.Theseerrorscanleadtotheeccentricityofthebearing,resultinginunevenloaddistributionandincreasedwear.Furthermore,inappropriatelubricationduetomisalignmentcanresultinadditionalfrictionandpowerloss.Toanalyzethesepositionalerrors,precisemeasurementsandalignmenttechniquesmustbeemployed.Advancedsurveyingandlasermeasurementtechnologiescanbeutilizedtoaccuratelydetectandcorrectanymisalignmentordeviations.Additionally,carefulinspectionofthebearingassemblyduringregularmaintenancecanhelpidentifyandrectifyanypotentialissues. AnalysisofOrientationalErrors: Orientationalerrorsinthe