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外文翻译--现代工程机械行业的技术进步.doc外文翻译--现代工程机械行业的技术进步.doc -- 5 元

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1ModernconstructionmachineryindustryoftechnicalprogressLargesizemechanicalminingexcavatorisusedwidelyininternationalanddomesticengineeringconstructionandminingperformance,anditspropertydefinestheefficiencymuch.Nowbecausetheinternationalmarketisopenedstepstep,howtopromotethequalityofexcavatoristhekeythatafactoryreinforcesitscompetingforce.Inourcountry,thedesigningelevationandproductionqualityonexcavatorcannotkeepupwithinternationaladvancedtechnologyapplyingonexcavator.Nowtheadvancedtechnologyhasalreadyappliedadvanceddesigningmethodonexcavatordesigning,suchaselectronicsimulatingtheory,dynamicdesign,reliabilitydesignandsoon.Butinourcountry,themostexcavatordesignhasstillappliedthetraditionaldesignmethod,themoderndesignmethodhasnotbegantobeactuallyapplied.Theprimedisplayisthatthecapabilityofselfdesignisnotenoughandthebasicworkhasnotdoneperfectlyespeciallytheexcavatorkinetics.Theconstructofexcavatorisverycomplexandthemultiplemoversoftenworksimultaneously.atthesametimeitsworkingenvironmentisverybadandtheeternalloadvariesrandomly.Asaresult,whendesigningthenewproductofexcavator,inordertoensuretheperformancesafety,thedesignernotonlyhasthebasictheoryanalysisonstaticloadcomputing,butalsodonecessaryworkaboutthekineticsofmechanismtoqualifythedynamicreliabilityintheperiodofdesigning.Troughthekineticanalysis,theloadpropertyofalltheelementsinexcavatorcanbedecidedsoastodesignreliableproduct.Fromthe1980softhe20thcenturytothebeginningofthiscentury.Chineseandforeignengineeringmachinerytechnologyproductscomefromamaturityperiodofmodernizationalongwithanewtechnologicalrevolution,Mechanicalengineeringproductsintegratedtechnologytoanewlevel.Electronictechnology,microcomputer,sensors,electrohydraulicservocontrolsystemintegrationandtransformationofthetraditionalmechanicalengineeringproducts,Computeraideddesignandcomputeraided2manufacturingandcomputeraidedmanagementofconstructionmachineryandequipmentmanufacturing,ITnetworktechnologyequipment,constructionmachinerysalesandinformationtransfersystems,thusenablingpeopletoseeabrandnewconstructionmachineryindustry.Newconstructionmachineryproductsintheefficiencyandoperationalquality,environmentalprotection,performanceandautomationaremanyareasduetothepast.andtowardthefurtherroboticandintelligentdirection.1、operatingprinciplesofInnovationgroundbreakingnewlawwiththehighfrequencyvibrationWithscientificandtechnologicalresearchinthedevelopment,engineeringmachineryoperatingtheoryisconstantlyinnovating.Operatingmechanicalengineeringprinciples,includingthecuttingofearth,brokengroundonthescreengeotextilematerial,mixedwithheating,rightmixtureofpaving,levelingandcompaction,etc..TheseoperationsJimmyinitiallybionicsandNewtonianmechanicsbased,Modernscienceandthedevelopmentofengineeringmachineryoperatingprincipleoflayingthefoundationforinnovation.Forexample,mechanicalvibrationandpulsejet,thephotoelectriceffectandthermalphysics,theapplicationofmechanicalengineeringtosaveresourcesandimprovethequalityofconstructionimproveproductionefficiency,reliabilityanddrivingcomfortandadegreeofautomationtocreateconditions.Excavators,bulldozers,loaders,andotherearthmovingmachinerycuttinggroundbreakingproject,wehadnostrugglemilling,highfrequencyvibration,Liquidgasjetmethodandporousgroundbreakinglaw.Groundbreakinguseofthenewoperatingprincipleoftransformationtoabucket,canloosenthesoilexcavationforthehighintensityrock,Undernormalcircumstancescanreducetheunitcostofearthworkandimproveproductionefficiency,andthesoilnearthebuildingwhensubstituteboredblastingmethod.VibratoryRollerisamechanicalvibrationandhavereachedasluggishvibrationtooperationaleffectivenessofthemostpowerfulnote.3Highfrequencyvibrationcompactiontechnologyistheapplicationofmoderndynamicsinthemechanicalengineeringimportantresearchresults,Invibratoryrollersimultaneouslywiththeapplicationofvibrationisolationtheory.90softhe20thcentury,therehavebeenalevelofvibrationvibrationandverticalvibrationdirectionalvibrationcompactionmethod,andanAMvibrationanddifferentfromtheharmonicvibrationofchaoticvibrationvibratorycompactionoperatingprinciple,andtheformationofthecorrespondingseriesofvibratoryroller.ImpactRollerbroketheexistingtraditionalcylindricalrollerstructure,Use35edgewiththepressurerollerpolygondraggedbyatractor,23timespersecondinordertoimpactontheground.Thishasdramaticimpactontheseismicwavepropagationcharacteristics,thedepthofcompactionseveraltimeswiththeRCCandincremental,5minthedepthsofthedegreeofcompactionofup9092.ImpactRollerisstaticshock,vibrationandrubitsmashesthecomprehensiveroleforlargefill,Collapsedrysandandsoilfillingthecompaction.AsphaltpaverWeipingequipmentisoperatingprinciplesofmechanicalengineeringinnovationtypicalexample.Fungplatediesel,liquefiedpetroleumgasorelectricheatingand60Hzfrequencyofvibration,andusinginfrared,ultrasonicorlaserleveling,isamultidisciplinaryhightechapplications.Thislevelingthetechnologycanbeappliedtothegroundplane,asamlodipineorfinelevelingtheslope.Transferfrequencymechanicalvibrationisalsocommonlyusedfordrilling,stonecrushingandsievingandShenpullingpilingworks.Thestonedryingcanusediesel,fueloilandcoalcombustionofvariousfuelsontheasphaltfromthebarrel,heatingandasphaltmixture,stirringandinsulationprocessisthefulluseofthermaltheoryofphysics.Asphaltemulsionandsomearemodifiedchemicalreactionphysicalspecificapplication.2、driveinnovationuniversalhydraulicandelectricdriveHydraulicdriveinthe20thcentury,the1960sappliedtotheroller,only10yearsonthetimehasbeenspreadandpopularize.Nowrollertravel,vibration,steeringandbrakingsystemshasachievedthefullhydraulicdrive.4Hydraulicdrivegreatlysimplifiedtherollerdriveandcontrolsystemdesign,hydraulicdriveasmooth,convenientmanipulationeffort,easytoachievevariablespeedandautomation,ingeneral,improvetheproductionefficiencyofrollercompactionandquality.Nowforeignmarketshaveseenverylittlemechanicaltransmissionoftheroller.Hydrostaticdrivetechnologyinthe1970sbegantousebulldozers,andwillsoonbeextendedtoanumberofsmallandmediumbulldozersandloaders,theUnitedStatesJohnDeere,Caterpillar,GermanyBohaibenefitcompaniesandDoleproducedbyKomatsuofJapanhasproductionandsalespushedTemplehydraulicmachinesandloaders.Hydrostaticdrivenottousehydraulictorqueconverter,whichdispensewiththeleftlaneandbrakepartsandmechanicaldrive,useofasafetyvalveonmechanicalandhydraulicsystemsoverloadprotection,andtheindexofsmallerpowerplaybiggestindex,itsremainingpoweravailableintheauxiliarymachineryoperation.GermancompanyDeutschemarkandLeeBohaiFallofotherpubliccompaniesin1954andin1955tooktheleadindevelopingahydraulicexcavator,butthehydrostatictransmissioninlargeexcavatoristhepopularizationandapplicationofthe1970s.Sincetheearly1980s,excavatorsandsubdivided,isgraduallyrealizedpowered,rotaryandthehydraulicexcavatorof.Intheinternationalmarketexcavators,werealleliminatedvariousmechanicaldrive.Latehistoryofthebirthoftheroadismoremechanicalhydraulicdrivebased,suchaspaver,soilstabilizer,Pavementmillingmachine,hydraulictransmissionsmoothnesshelpimprovethequalityoftheroadspaved.Drillinginthecaranddrillingmachines,hydraulictransmissionhasreplacedthepreviousaerodynamic,Wheeledmoderncranesandmachineryalsopilingworktothewholeinthedirectionofhydraulicdevelopment.Electricityinindustrialproductionwhiletheapplicationhasalonghistory,butinmobilemachineryisseldomused.Thisisbecause,firstly,tothemotorcapacityof,amotorwiththesamepowerascomparedtothehydraulicmotor,itsweightandbulktogoodtimes,tothemachineryspacelayout
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