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外文翻译--起重机金属结构.doc

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外文翻译--起重机金属结构.doc

附录AHoistcranemetalstructureFlowslikeinthehoistcrane,themajorityoftirehoistcrane,thecrawlercraneaswellasthepartialautohoistandspecialpurposeflowslikethehoistcrane,allinstallshasclothesrackthebracketarm,andthroughliftsusingitspeakblockandtackleinstallschangesliftsthesteelwireposition,thusrealizationheavyitemfluctuationAgainchangesitsheightofliftandtheworkingradiusthroughthechangeclothesrackbracketarmlengthandtheangleoftilt.Therefore,maintenanceclothesrackbracketarmincompletenessisextremelyimportant.Becausethehoistcranerisesandfallstheheavyitemworkcontentthemultiplicityandallkindsofworkenvironment,aswellasthehoistcranepilotoperationallevelhighlowstatusreasonhasalsocontraryoperation,thesecancreateclothesrackthebracketarmvaryingdegreedamage,evenfoldsthearmorthepersonnelcasualtyOnclothesrackthebracketarmsteelpipeisspeciallyintheweldingplace,veryeasytoappearthecrackThismustexaminecarefully,whennecessityappliesthemagnifyingglasscarefulobservation.Accordingtowemanyyearexperiences,isverysmallwhenthecraterplacecrack,mustcarryontheregulartrackinspection,gazesatthecrackcloselythedevelopmentchange,inordertotakethemeasurepromptly.Whencrackwidthasbigas1mmabove,shouldthepromptpatching.Theconcretemethodis,carriesonfirsttothecrackplaceoriginalcraterpolishes,removeshowmanytoregardthespecialdetailstodecideThencarriesonthepatchingFinallyrenovateswellthen.Whenthepitdepthachievedthesteelpipethearmthicksize,alsothepitdistortiondiameterachieveswhen25mmdiameterfor25mmandastraightedge,ifthepitpositioninclothesrackonthebracketarmsteelpipesurface,thendeferstothemethodwhichshowninFigure1todeterminethepitthedepth,soonchoosesthegoodsteelballtoputinthepit,ifthesteelballapexupjustcouldwithrightangleunderalongthecontact,webepossibletoregardthesteelballbynowthediameterforthepitdepth.Ifthepitpositioninthesteelpipesideorunder,aftermayusethebuttertosticktofirstthesteelballcarriesonagainthesurvey.Tothiskindofmaintenancedamage,theavailablegeneralmaterialqualityandtheoriginalsteelpipesamesteelpipeweldingreinforcement,namelytakessectionofsteelpipestodivideintoalongthemiddlelinetwohalf,buildsitsnosetheincline,hasexemptedthecratertobeverticaltoclothesrackthebracketarmsteelpipelengthdirection.Musttreatinfrontofweldingtheoriginalclothesrackbracketarmsteelpipeaboveweldsplacepaintspolishescleanlyfront,preparesforweldsWhenclothesrackthebracketarmsimplerootsteelpipesurfacedamagequiteisserious,shouldadoptitsdamageserioussectionofsteelpipesremoves,weldssectionofsteelpipesthemethodtocarryonprocessing,butmustaddonasectioninsidethesteelpipetostrengthenthesteelpipe.Frontinordertocausetoweldstrengthensthesteelpipetobeablethesmoothinsertiontoremoveinasectionofclothesrackbracketarmsteelpipe,strengthensthesteelpipetobesupposedtomakethesimilarlylongtwosections,andusesthethreadsuccessivelyandweldstwowaystocarryontheconnection.StrengthenssteelpipeL1andL2slengthmustasectionofshort20mmwhichremovescomparedtoclothesrackthebracketarmsteelpipe,alsoitsouterdiametershouldcomparedtoclothesrackbracketarmsteelpipeinsidediametersmall2040μm,causetostrengthenthesteelpipebothtobepossibletomoveinclothesrackthebracketarmsteelpipeandnolongerbecomeslesscrowded.WillstrengthensteelpipeL1andL2firstinsertsclothesrackinseparatelythebracketarmsteelpipe,andwillusethemthescrewjointnottobeabletogetup,thenwillscrewtightcausestwoshoulderstodependonstrictly,willholdlooksstrengthensthesteelpipeaftertheposition,afterwilloccupyseparatelyitsscrewtoptheposition,separatelyandtwowillwelditsscrewtopplacethejailalreadytobepossible.Clothesrackthebracketarmsteelpipecratermustmaketheincline,whenthesteelpipespoolthreadperpendicularlineincludedanglefor10°30°between,likethedamageisthemultirootsteelpipe,shouldchoose10°.Here,againearnestlysurveysclothesrackthebracketarmsteeltubeweldinggoodafteractualgapsize,andreferstotheshapewhichshowninFigure2,thenextsectionofsteeltubingmaterial,thebothsidesmake30inclines,cutsopentheweldingalongamonginclothesrackinthebracketarmsteelpipegapFinishingtouch,paintsthenThistime,4steelpipesallmustweld,thereforeshoulddefertoFigure4requeststhevehicletomake4insidediameterstostrengthenthetube,aftertheinsidediameterstrengthenswallthicknesswhichthetubeturningremainstobesupposednottobebiggerthanclothesrackthebracketarmsteelpipethickness,themiddlecraterslopemustbeabletosatisfythestrengthofaweldtheneed.Atthesametime,theentireclothesrackbracketarm4steelpipeweldingpositionmuststagger,cannotintheidenticallateralsection,alsoeachsteelpipecraterinitsspoolthreadperpendicularlineincludedangleshouldbe10°.WeldsrepairstimemustpayattentionChoosestheappropriateweldingrodandthematerialqualityreasonablestrengthensthesteelpipeAlsomustpayattentiontotheambienttemperatureinthefallwinterseasonandweldtheexplanationlaborembryoclampingapparatusandsoontoentiretoweldrepairsthequalitytheinfluence,aswellastheweldingcircumferenceweldedjointdonothavetobeverticalwiththeoriginalsteelpipelengthdirection.Theweakclothesrackbracketarmgoesagainstthesheavepintlethewearingcapacitytosurpassthefullsizetime5,namelyshouldreplace.Whenexamination,clothesrackthebracketarmwillplaceinabearingpoint,willcausetoliftthesteelwiretorelax,thehandwillpushthepulleyifwillrockthequantitytobeverybig,willhavetodismantlewiththerulersurveys,otherwiseaddedanoiltobepossible.Toconnectsthecrownarmfestivallifthookblockandtackle,themiddlearmfestivalexpandsandcontractscylinderfixedly,thefoundationarmfestivalwithturnplate,amplitudecylinder,keepsoffcordpulleyaxisandsoonplacetoselltheaxisalsotohavetoinspectfrequently.Whenitswearingcapacityachievedwhenfullsize5,mustreplacepromptly.Wheninspection,alsoisplacesclothesrackthebracketarminabearingpoint,dismantlesone,inspectsone,againinstallsone,byrootinspection,untilcheckoff.Inspectsthelifthookthemarkandguardsagainstescapesinstallswhetherconformstotherequirement,flawsandsoonlifthookwhetherthereiscrack,strippingThelifthookcrosssectionwears,theapertureincrease,thetorsionaldeflection,whetherexceedstheallowedfigureThelifthookpateandthesuperficialwhetherthereiswearydistortion,thecrackanddothecorrelationselltheaxis,thewrapattritionsituation.Theinspectionsteelwirespecification,themodelandthepulleyreelmatcheswhetherconformstothedesignrequirement.Steelwiresteelwireattachmentsystemsandsoonfixedendclamp,lineanchor,agreementblockwhetherconformstotherequirement.Thesteelwireattrition,breaksthesilk,thekinking,compressing,thebend,breaksthestock,thecorrosionandsoonwhetherexceedstheallowedfigure.Brakeestablishment,brakepatternwhetherconformstothedesignrequirement,brakeflawsandsoontensionbar,springwhetherthereiswearydistortion,crackSellstheaxis,thespindle,thebrakepulley,thebrakeliningplatewhetherwearsexceedstheallowedfigure,hydraulicbrakewhetheroilleakAppliesthebrakethegapadjustment,whetherbrakepowerconformstotherequirement.Thereelbody,doesthetubereasonwhetherthereisfatiguecracking,damageandsoonthesituationsTheropetroughandthetubewallwearswhetherexceedstheallowedfigureWhetherthereelwheelrimhighlyanddoesthesteelwiretwinethelayertomatchGuiderope,wirelineguideworkingconditionwhetherconformstotherequirementWhetherthepulleyisequippedwithguardsagainstescapestheropetroughinstallmentPulleyropetrough,wheelrimwhetherhasthecrack,theraggededges,theattritionexceedstheallowedfigureandsoontheconditions,thepulleyrotateswhethernimbly.Thespeedreducermoveswhenwhetherthereisfiercemetalfricative,vibration,shellradiationandsoonunusualsoundWhethertheaxialtabterminaldoessealcomplete,whetherthesetboltdoeshaveconditionslooselyandsoondamageThespeedreducerlubricatingoilchoice,theoillevelheight,theverticalspeedreducergunmovement,opensthetypegeardrivelubricationandsoonwhetherconformstotherequirement.Wheelrollerface,wheelaxlewhetherhasthefatiguecrackingphenomenon,thewheelrollerfacewheelaxlewearswhetherexceedstheallowedfigure.Whetherinthemovementappearsgnawstheaxlephenomenon.Createsgnawstheaxlethereasonisany.Doestheshaftcouplingcomponentswhetherthereisdamage,theconnectionbecomelesscrowded,movementimpactphenomenon.Theshaftcoupling,sellstheaxis,theaxiscotterhole,thecushionoakrubberorplasticringswearswhetherexceedstheallowedfigure.Theshaftcouplingwithtwopartswhichconnectswhetherconcentric。

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