现代起重机的特征和发展趋向外文翻译

CharacteristicsandDevelopmentalTendencyofModernCranesWithrapiddevelopmentofmodernscienceandtechnology,magnificationofindustrialproductionscaleandimprovementofautomationlevel,applicationofcranesisbecomingwidespreadanditsfunctionisobvious.Meanwhile,requirementsforcranesaremoreandmorestrict.Especially,thewidespreaduseofelectroniccomputertechnologyspurslotsofsubject-crossingadvanceddesignapproachesandacceleratestheimprovementofmodernmanufacturinganddetectingtechnology.Fiercecompetitionininternationalmarketbecomesmoredependentonthecompetitionoftechnology.Alloftheseimpeltechnologicalfunctionsofcranesintoabrand-newdevelopmentalstage.Cranesarefacingatremendoustransformation.Ourcountryisenteringglobalinternationalcompetitivemarketatanunprecedentedrateandcranemanufactureisconfrontedwithanewsituationwhereopportunitiesandchallengescoexist.Thus,itiscrucialforcranestodevelopandinnovateconstantly.Iwanttomakeabriefexplanationaboutcharacteristicsanddevelopmentaltendencyofmoderncraneswithexamples,basedonnewtheories,technologyandtrendofcranesathomeandoverseas.Makethekeyproductslarge,highspeed,enduredandspecializedBecauseofcontinuousexpansionofindustrialproductionscale,increasinglyimprovementofproductionefficiencyandrisingproportionofmoneyspendingonloadingandunloadingandtransportingmaterialsintheprocessofproduction,requiredamountoflargeorhigh-speedcranesisincreasing.Liftingquantitiesbecomelarger,workingspeedbecomeshigherandrequirementsofenergy-consumingandreliabilitybecomestricter.Craneshavealreadybecomeacriticallinkintheprocessofautomationproduction.Cranesshouldbeeasytouse,maintainandoperateandhavehighsecurity,lesstroublesandlongaveragetimebetweenfailures.Thecentralissueininternationalmarketproductioncompetitionisreliability,andmanycompaniesabroadhavedrawnupinter-controlledstandardofreliability.Themostimportantforustocatchupwithandsurpassworldadvancedlevelofcrane’sfunctionistoimprovereliability,tomakecranesdurable,lesstroubles,maintainableandeconomictobeused.Atthemoment,thebiggestfloatingcraneintheworldweighs6500t,chaincrane3000tandbridgecrane1200t.Diversityofindustrialmodeofproductionandcustomers’needmakescranemarketexpandingandproductsrenewingconstantlytosatisfyspecialneedswithspecificfunctionsandbringitsbestusefulnessintoplay.Functionsofvariouskindsofcranesareimproving.DEMAGERGOTECHhasdevelopedacranespecialforaircraftmaintenance,whichhasmadeitsownwayintointernationalmarket.Thiscraneisgreatinlengthandliftingheightandhasaccuratehalt.Whenaflexiblemaintenanceplatformfixedunderliftingcart,itcanreacheverypartoftheaircraft.Withthefastdevelopmentofnuclearpowerstationsintheworld,craneswhicharespecialforthemachievecorrespondingdevelopment.Forexample,annularbridgecraneinreactors’space,workingunderradiativecircumstances,isusedtoliftdangerousloadsuchastopcoverofpressurecontainerandcomponentsinreactors.Itrequireshighreliability,highsecurity,theabilitytodeterminelocationaccuratelyandautomaticallyandtransfergoodstoalowerlevel,aswellasvariouskindsofprotectionandparticularsecuritydevices.2.Makeseriesofproductionmodularized,combined,standardizedandpracticalMostcranesareproducedbyseriesandbatch,thususeofsystematicmulti-objectionsentireoptimizationtodesignseriesofcraneshasalreadybecomethekeypointindevelopment.Throughrationalmatchingofseriesmainparameter,itsfunctionscanbeimproved,manufacturingcostcanbereduced,anddegreeofgeneralpurposecanberaised.Uselessspecificationsparepartstocomposeseriesproductionwithmulti-speciesandmulti-specifications.Andthus,therequirementsofcustomerscanbefullysatisfied.Byusingmodularizeddesigninsteadofconservativeentiredesign,wecanmakecomponentswithsimilarfunctionsintostandardmoduleswhichhavevarioususes,similarconnectivekeyfactorsandareinterchangeable.Throughcombinationofdifferentmodules,wecanmakedifferentkindsandspecificationsofcranes.Thereareonlyseveralmodulesinvolvedwhenitcomestocraneimprovement.Todesignanewstyleofcrane,allthatyoudoistochoosedifferentmodulestorecompose.Becauseofimprovementindegreeofgeneralpurpose,singleproductswithsmallserialproductioncantransformintomoduleproductionofprettygreatbatches.Asaresult,wecanachievespecializationproductionwithhighefficiencyandcutmanufacturingcost.Itcansatisfymarketingdemandsandincreasecompetitivecapacitybycomposingcranesofvariousseriesandspecificationsusinglessmodularizedforms.BridgecraneproducedbyDEMAGERGOTECHconsideredcarefullymodularizationandcombination.Itmakesinter-parameterofseries,entirety,mechanismandcomponentsmatchedwitheachother.Thedistributionofcapacityobtainsmosteconomicandsuitableeffects.Tomakethemaincomponentsofliftingmechanismreachesitslargestgeneralpurpose,themethodthattheresultofliftingweightsmultiplyingliftingspeedisaconstanthasbeenused.Therearemorespecificationsderivedthroughchangesofpulleymultiplyingpower.Seriesof5-125tbridgecranesonlyneedfourbasicliftingcartsevenwithvariousworkingranks.Moduleseriesofstandardwheelcases,whichareproducedbythecompany,havevariousgroupsoflinkingholeswhichcanchoosedifferentdriveunittoformplatformcarts.Theycanalsocombinewithmet