EDRTrainingRAILWAYSECTORBogieCONTENTSBogieBogie1—sidebeam;2—crossbeam;3—rubberspring;4—axlebox;5—axleboxlowerbaffle;6—sidebearing;7—centerpin;8—bolt;9—brakingrodconnectinglug;10—Brakeshoesupportliftinglug;11—Hydraulicshockabsorberconnectinglug;12—Guideframe;13—Axleboxsupportcylindermountinghole1.

StructureThereareplanefrictionsidebearingsontheleftandrightsidebeamsofthebogieframe.Thereisacenterpininthemiddleoftheframecrossbeam.Thecenterpinisinstalledonthecrossbeamthroughjointbearings.Thecoverisfixed.Therefore,thecarbodycanswingleftandrightwhenpassingthroughthecurve,andtheentireweightofthecarbodyistransmittedtothebogiethroughthecenterpin.ThewheelsetandaxleboxareinstalledintheframeoftheframethroughtwoV-shapedrubbershockabsorbers.Inordertoreducethevibrationforceduringoperation,ahydraulicshockabsorberisinstalledbetweentheaxleboxandthesidebeamoftheframe.Inordertoensuretheaccuracyoftrackdetectionduringthetampingoperation,theframeandthebogiemustberelativelyfixed,sohydraulicsupportdevicesareinstalledbetweentheaxleboxandtheframe,andbetweentheframeandtheframe.Whenthetampingcarisrunning,thebogiebearsforcesinthreedirections:verticalforce,longitudinalforceandlateralforce.Theseforcesaretransmittedinthefollowingorder:verticalforce:carbody→centerpin→frame→rubberspring→axlebox→wheelset→rail.Longitudinalforce(tractionorbrakingforce):wheelset→axlebox→rubberspring→frame→centerpin→frame→coupler.Lateralforce:steelrail→wheelset→axlebox→rubberspring→frame→centerpin→frame.1.

Structure2.

Structureandfunctionofaxlegearbox

Axlegearboxesaredividedintomaindrivegearboxesandauxiliarydrivegearboxes.Thispictureisthemaindrivegearbox,whichismainlycomposedoftheboxbody,drivingbevelgear,passivebevelgear,bearing,lubricationpump,reactionarm,etc.Theauxiliarydrivegearboxismainlycomposedofprimaryandsecondaryspurgears,case,bearing,clutch,reactionarm,etc.

3.ThemainstructureofDC08-32tampingcarbogie

Thedrivinganddrivenbogiesofthetampingcararecomposedofbogieframe,wheel-setaxleboxdevice,axlegearbox,sphericalcenterplate,constantcontactsidebearing,springdampingdevice,basicbrakedeviceandobstacledeflectiondevice.Partscomposition.Itsupportstheframe,bearsandtransmitsvariousloadsandforcesfromtheframetothewheelpairorfromthewheelrailtotheframe.Andmaketheaxleloadevenlydistributed.Toensurethesafeoperationofthetampingvehicle,itcanflexiblyrunalongthestraightlineandsmoothlypassthecurve.Makefulluseoftheadhesionbetweenthewheelandrailtotransmittractionandbrakingforce,amplifythebrakingforcegeneratedbythebrakecylinder,sothatthetampingvehiclehasagoodbrakingeffecttoensurethatitstopswithinthespecifieddistance.Thespringdampingdevicehasgooddampingcharacteristicstoeasetheinteractionbetweenthetampingcarandtheline,reducevibrationandimpact,reducedynamicstress,andimprovetherunningstabilityandsafetyofthetampingcar.3.ThemainstructureofDC08-32tampingcarbogie

ThebogieadoptsanintegratedH-shapedintegralweldedframewithabolsterandasideframe,atwo-axlebogiewithpedestalpositioning,andasphericalcoreplateconnectedtothecarbody.Amongthem,theaxleboxadoptstheguideframepositioningstructure,whichcanallowarelativelylargerelativedisplacementbetweentheaxleboxandthebogiesideframeintheverticaldirection.Smalldisplacement.Theprimaryspringsuspensiondeviceisarrangedbetweenthebogiesideframeandthewheel-setaxlebox,sothatthevibrationofthevehiclebodyundergoesaspringdampingdevice.

Thesphericalcoreplateisthemainload-bearingcomponentofthetampingcar.Inadditiontoconnectingtheframeandthebogie,italsotransferstheload,andisthecenterofrotationoftheentirebogieduringtheoperationofthetampingcar.Therefore,thecoreplatestructureisoneofthekeystructuresofthetampingvehicle.4.StructureandfunctionofsphericalcoreplateTheforceconditionofthesphericalcoreplate:Thecoreplateisanimportantload-bearingcomponent,andthemainforcesreceivedandtransmittedare:①verticalload(includingverticalstaticloadandverticaldynamicload);②lateralforce;③longitudinalforce;④rotationalfrictionresistance.Thestressofthesphericalcoreplate:thetampingvehicleisinoperation,duetotheinfluenceoftheline,theclimateandthestructureofthetampingvehicleitself,theforcesituationisverycomplicated.Thepositionofthecorediscisthesprungmasspartofthetampingcar.Duringoperation,thecorediscissubjectedtovariousloads.Theseforcesaresuperimposedwithhighloadandlowcycle,sothatthecorediskintegrateshugetensilestress,compressivestress,impactforce,strongvibration,andheavyloadfriction.Thecorediskissubjectedtostrongshockandvibration.Theworkingprincipleofthesphericalcoredisc:theupperandlowercorediscmatingsurfacesofthesphericalcorediscareallspherical,andtheverticalforce,transverseforceandlongitudinalforcearealltransmittedbythesphericalsurface.Theupperandlowercorediscsareconnectedbyacenterpin,sothattheupperandlowercorediscsarenoteasytofalloutwhenalargelongitudinalforceacts.Sphericalcontactincreasesthedegreeoffreedomoftheframerelativetothebogie,whichcancompensatefortheimpactofmanufacturingandinstallationerrorsonthealignmentoftheframeandthebogie.Thefunctionofthesphericalcoreplate:Whentheframerollsagainstthebogiebolster,theframeproducesacertainangleanddeflection.Thesphericalcoreplatestillhasagoodfit,andtheupperandlowercontactsurfacesarestillcloselyattached,andthecontactareawillnotoccur.Change,thepressureofthecoreplatewillnotfluctuatelikeaflatcoreplateundertheactionofedgeload.Inthisway,fatiguecrackscausedbytheincreaseofthepressureofthecoreplateareavoided,andthewearofthecoreplateisalsomorereasonable.5.Structureandfunctionofelasticsidebearing

Itismainlycomposedofupperandlowerspringseats,springs,andfrictionplates.Theelasticsidebearingcannotonlybearpartoftheverticalload,butalsoprovideproperturningresistancetorquetotherunningbogietolimititsswayingmotion,improvethestabilityofthetampingcar,andatthesametime,itcanalsolimittherollingmotionoftheframe,Conducivetoanti-overturningsafety.Theinteractionbetweenthesphericalcoreplateandtheelasticsidebearing,ontheonehand,thefrictioninthesphericalcoreplaterealizesthedampingeffectrequiredbythebogie,andontheotherhand,iteliminatestheadverseeffectscausedbymanufacturingandinstallationerrors.Thepositivefunctionoftheelasticsidebearingensuresthatthesphericalcoreplatecanbeinanormalworkingstate.6.Thestructureandfunctionoftheframework

Thebogieframeiscomposedofthemiddlebeam,sideframe,sphericalcenterplateseat,sidebearingspringseat,bearingboxguideseat,brakecylindersupportframe,brakebeamhangerandotherworkingmechanismsupports.ThebogieframeisanH-typefullyweldedstructurebogie,whichhasthecharacteristicsofsimplestructure,highstrength,goodrigidityandlightweight.Themanufacturingaccuracyoftheframeisguaranteedbyassemblywelding.Aftertheframeiswelded,nomechanicalprocessingorspecialheattreatmentisrequiredtoeliminateweldingstress.7.Structureandfunctionofspringsuspensiondevice

Thespringsuspensiondeviceisinstalledbetweenthebogiesideframeandthewheelsetaxlebox,andconsistsofaspringseat,acoilspring,etc.Ontheonehand,thedevicetransfersthemassandloadofthevehicletotheaxlesinarelativelybalancedmanner,andenablesthevehicletomeettheheightrequirementsfromthecenterofthecouplertotherailsurfaceunderastaticloadcondition,andensurethenormalcouplingofthevehicle.Ontheotherhand,thespringsuspensiondevicecaneffectivelyalleviatethevibrationandimpactgeneratedduringvehicleoperation,reducenoise,andimprovethecomfortandstabilityofvehicleoperation.8.VariablefrictionshockabsorberTheshockabsorberofthedrivinganddrivenbogieofthetampingcarisavariablefrictionshockabsorber,thestructureisbasicallythesameasthatoftheLinoershockabsorber,andthewedgeangleis23°.Itiscomposedofguideframe,shockabsorbersupport,springcap,spring,toppiece,wearplateandotherparts,asshowninFigure.Theshockabsorbersupportframeisconnectedtotheframebywelding.Ontheotherhand,theverticalloadonthebogiecoreplateistransmittedtothedampersupport3throughtheframe1,andthentothespring5throughthespringcap4,andfinallytotheaxlebox8,thebearingandthewheelset.superior.Ontheotherhand,sincethelowerpartoftheshockabsorberbracketisabevelededge23°withthehorizontalplane,thebevelededgeisembeddedintheinclinedwedgegrooveattheupperendofthespringcap,sotheshockabsorberbracketalsogivesthespringcapalongitudinalhorizontalcomponentofforce.thishorizontalforcemakesthespringcappressthetopplateinthelongitudinaldirection,makingthetopplatetightlyattachedtothewearplateoftheaxlebox,andatthesametimemaketheleftsideguideframeandthewearplateontheleftsideoftheaxleboxclose.Whenthetampingcarvibrates,frictionresistanceisgeneratedbetweenthetopandthewearplateandbetweentheguideframeontheleftsideoftheaxleboxandthewear.SincethehorizontalcomponentforceFh(thatis,thepositivepressurebetweenthejackandthewearplate)isproportionaltotheverticalloadFVreceivedbythespring,thefrictionforceisproportionaltotheloadreceivedbythebogie.Itisavariablefrictionshockabsorber8.VariablefrictionshockabsorberVariablefrictionshockabsorberhasattenuationeffectonverticalandlateralvibration,itsperformanceisstable,frictionislessaffectedbyexternalweatherconditionsandwearstate,andthewearsurfaceiseasytorepair.Sincethereisnogapbetweentheaxleboxandtheframe,thelongitudinalpositioningrigidityofthewheelsetisincreased,andtherunningstabilityisimproved.8.Variablefrictionshockabsorber9.Assemblyofdoublerowtaperedrollerbearings

Structuralcharacteristicsofdouble-rowtaperedrollerbearings⑴Sealeddouble-rowtaperedrollerbearings.⑵Adoptcontacttypesealingdevice.⑶Adoptintegralplasticsteelcage.⑷Thereare23rollersineachrow,withfullcrowndesign.10.Structureandfunctionofaxlegearbox

Theaxlegearboxisthekeydrivingdeviceofthetampingcar.Itisastraight-toothtwo-stagereductiongearboxandanexternalgearshiftgearbox.Atotalof0position(coupling),Iposition(workingtravel),andIIposition(highspeedtravel)aredesigned.Therearetwogearswithspeedratiosof0,1:5.93,and1:17.91.Athree-positioncylindercontrolsthegearconversiontomeettheneedsofthetampingcarforcoupling,working,andhigh-speedwalking.TheworkingspeedItis0～7.7Km/h,whichishigherthanothertypesoftampingtrucks;itisconvenienttomovequicklyontheworksite,andthehigh-speedtravelspeedis0～100Km/h.Eachgearboxisdesignedwithamanualneutrallockingmechanism,oneofwhichislinkedwithanair-controlledswitchingvalve,whichcaneffectivelypreventthedrivingmotorfrombeingdraggedbackandcausingdamagetothehydrauliccomponentsduetomisoperationduringjointtravel.Eachgearboxisequippedwithareactionarm,whichisconnectedtothef