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1、英文原文：ModernconstructionmachineryindustryoftechnicalprogressLarge-sizemechanicalminingexcavatorisusedwidelyininternationalanddomesticengineeringconstructionandminingperformance,anditspropertydefinestheefficiencymuch.Nowbecausetheinternationalmarketisopenedstepstep,howtopromotethequalityofexcavatori
2、sthekeythatafactoryreinforcesitscompetingforce.Inourcountry,thedesigningelevationandproductionqualityonexcavatorcannotkeepupwithinternationaladvancedtechnologyapplyingonexcavator.Nowtheadvancedtechnologyhasalreadyappliedadvanceddesigningmethodonexcavatordesigning,suchaselectronicsimulatingtheory,d
3、ynamicdesign,reliabilitydesignandsoon.Butinourcountiy,themostexcavatordesignhasstillappliedthetraditionaldesignmethod,themoderndesignmethodhasnotbegantobeactuallyapplied.Theprimedisplayisthatthecapabilityofself-designisnotenoughandthebasicworkhasnotdoneperfectlyespeciallytheexcavatorkinetics・Theco
4、nstructofexcavatorisverycomplexandthemultiplemoversoftenworksimultaneously.atthesametimeitsworkingenvironmentisverybadandtheeternalloadvariesrandomly.Asaresult,whendesigningthenewproductofexcavator,inordertoensuretheperformancesafety,thedesignernotonlyhasthebasictheoryanalysisonstaticloadcomputing
5、,butalsodonecessaryworkaboutthekineticsofmechanismtoqualifythedynamicreliabilityintheperiodofdesigning.Troughthekineticanalysis,theloadpropertyofalltheelementsinexcavatorcanbedecidedsoastodesignreliableproduct・Fromthe1980softhe20thcenturytothebeginningofthiscentury・Chineseandforeignengineeringmach
6、inerytechnologyproductscomefromamaturityperiodofmodernizationalongwithanewtechnologicalrevolution,Mechanicalengineeringproductsintegratedtechnologytoanewlevel.Electronictechnology,micro-computer,sensors,electro・hydraulicservocontrolsystemintegrationandtransformationofthetraditionalmechanicalengine
7、eringproducts,Computer-aideddesignandcomputer-aidedmanufacturingandcomputer-aidedmanagementofconstructionmachineryandequipmentmanufacturing,ITnetworktechnologyequipment,constructionmachinerysalesandinformationtra
