Home технология Surface vibrator

Surface vibrator



Mainmechanismanditsfunction

Surfacevibratorismainlycomposedofmotorvibratorandvibrationplate.

Figure1showsaflat-platesurfacevibrator.Itsmotorandeccentricvibratormeetasawhole,whichiscalledmotorvibratorforshort.Thebottomisequippedwithavibratingplate.Forvibrationonthehandle,abufferspring3isinstalledbetweenthemotorvibrator2andthehandle.Whenthemotorrotor8rotates,theeccentricblock9onthefixedrotorshaftgeneratesacyclicallyvaryingcentrifugalforce,whichpromptsthemotorvibratortovibrateandtransmitthevibrationtothevibrationplate,therebyvibratingtheconcrete.

Figure2isasurfacevibratorwithatrough-shapedvibrationplate.Theoperatinghandle7isinstalledonbothsidesofthetrough-shapedvibratingplate,andcanbeliftedandmovedbyatether.

Figure3showsaflatsurfacevibratormodifiedfromanattachedvibrator.Thisvibratoronlyneedstobeboltedtoawoodormetalplateonthebaseoftheattachedvibrator.Thenthesurfacevibratingworkofconcretecanbecarriedout.

Themotorvibratorofthestrip-typesurfacevibratoristhesameasthatoftheplate-typesurfacevibratorexceptthatthebottomplateisalongI-beam.Thistypeofvibratorismainlyusedfortampingroads,slopesandotherconcretestructures.

Featuresandscopeofapplication

Therearemanytypesofconcretesurfacevibrators,ofwhichthemostcommonlyusedistheflatsurfacevibrator.Theflatsurfacevibratorisdirectlyplacedontheconcretesurface,andthevibrationwavegeneratedbythevibrator2istransmittedtotheconcretethroughthevibrationbaseplate1fixedwithit.Becausethevibrationwaveistransmittedfromthesurfaceoftheconcrete,itiscalledasurfacevibrator.Whenworking,twopeopleholdthehandle4ofthevibratoranddragitaccordingtotheneedsofthework.Itissuitableforlarge-area,small-thicknessconcrete,suchasprefabricatedconcreteslabs,pavements,bridgedecks,etc.

Usepoints

(1)Whenusing,theconcreteirrigationareashouldbedividedintoseveralrows.Slowlymoveinarowandmoveforwardinsequence.Themovingdistanceshouldbesuchthattheflatplateofthevibratorcancoverabout500mmoftheedgeoftheconcretethathasbeenvibratedtopreventvibrationleakage.

(2)Whenvibratingtheinclinedconcretesurface,itshouldgraduallymovefromalowplacetoahighplacetoensuretheconcretevibrates.

(3)Thevibratingdurationoftheplatevibratorateachpositionisbasedontheconcretestoppingsinkingandslurringupwards,orthesurfaceissmoothandtheslurryappearsevenly,generally25-40secondsTherangeisappropriate.

(4)Theeffectivedepthofactionoftheplatevibratorisapproximately200mmintheunreinforcedandsingle-layerreinforcedplate,andapproximately120mminthedouble-layerreinforcedplate.

(5)Forlarge-areaconcretefloors,oneortwovibratorscanbeinstalledontwowoodenpoles,andtheconcretecanbecompactedthroughthevibrationofthewoodenpoles.

Useandmaintenance

Theuseofthesurfacevibratorisrelativelysimple,aslongasitisconnectedtothespecifiedpowersupplyasrequiredbythebrand,itcanbeoperatedandused.

Surfacevibratorsarethesameasinternalvibrators.Mostofthemworkintheopenandhumidenvironment.Therefore,theelectricalpartispronetofailure,andifthereisaleakagephenomenon,itiseasytocausepersonalinjuryordeath.Therefore,itisnecessarytostrictlyabidebytheelectricalsafetyoperationrules.

Duringthetestvibrationofthesurfacevibrator,donotrunitforalongtimeondryandhardgroundtoavoiddamagetothevibrator.

Whenmovingduringoperation,thewireofthemotormustbemaintainedwithsufficientlengthandslack,anddonotmakeittootighttoavoidthewireendfrombreaking.

Whenseveralattachedvibratorsareusedonacomponenttoworkatthesametime,thefrequencyofeachvibratormustbeconsistenttoavoidmutualinterference.

Theoutersurfaceofthevibratorshouldbekeptclean,donotmakethecementpastesticktothemotorshell,soasnottohinderthemotor'sheatdissipation.

Duringwork,alwayscheckwhetherthemotorfeet,casingandvibrationplateareintactandwhethertheconnectionsaretight.Iftherearecracksandlooseness,theymustberepairedorre-fastenedintime.Flatsurfacevibratorswithbufferspringsshouldhavegooddampingperformance.

Thebearingendcapsatbothendsofthesurfacevibratormotorcannotbeloosened,andthescrewsmustalwaysbetight.

Inthework,wemustalsopayattentiontothecircuitandswitchmustbewellconnected.

Cleanthemachinebodyandvibrationplateafterwork,andapplyathinlayerofengineoiltopreventtheconcretefromstickingtothenextwork.

Surfacevibratorscangenerallybemaintainedatthefirstlevelevery600workinghours.Inthefirstlevelmaintenance,theinsulationresistanceofthemotorshouldbetested,andthemotorshouldbedisassembledandinspected,andthebearingsandvibratorsshouldbechecked.Theinnerandouterracewaysofthemotorbearingshouldnothaveflakingspots,andtheradialclearanceshouldnotbegreaterthan0.12mm.Whenrotatingthebearingbyhand,itsrotationshouldbeevenwithoutobstruction,butaslightanduniformsoundisallowed.Thepositionoftheeccentricvibratorshouldbeaccurate,andthefitoftheconnectingkeyandthekeywayshouldnotbeloose.

Forthesurfacevibratorwithtransformer,theinsulationresistanceofthetransformermustbetestedduringthefirst-levelmaintenance.Whenmeasuring,itcanbeshakenevenlywitha500-voltshakerfor3minutes,andtheinsulationresistancevalueshouldnotbelessthan1.5megohms,otherwiseitmustbedried.

Motorbearingsshouldberefilledwithlubricatingoil(grease)after300workinghours,andcleanedandreplacedwithnewgreaseduringthefirst-levelmaintenance.No.2calcium-basedgreasecanbeusedinsummerandno.2calcium-basedgreaseinwinter.No.1calcium-basedgrease.

Themotorofthesurfacevibrator,thefailurethatmayoccurduringuse,canrefertothesimilartroubleshootingmethodoftheinternalmailvibratorforrepairandexclusion.However,becausetheeccentricblockisattachedtothemotorshaftofthisvibrator,themotoritselfbecomesavibratorandworksundertheconditionofvibration,whichmakesthebearingofthemotoreasytobedamaged.Whenthebearingisworntoomuch,therotorwillrubagainstthestator.Phenomenon,themotorwillhaveafrictionsound,andthebearingmustbereplacedintime.Otherfaultscanberepairedandeliminatedbyreferringtothefollowingtable.

This article is from the network, does not represent the position of this station. Please indicate the origin of reprint
TOP