资源描述：
《工程机械的发展》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。
1、工程机械的发展DevelopmentofconstructionmachineryFrom1980stothebeginningofthiscentury,foreignengineeringmachinerytechnologyhasmsturedfromtimetomodernization,anditscomprehensivetechnicallevelhasleaptintoanewoneSteps.Thismakespeopleseeanewconstructionmachineryindustry
2、,newconstructionmachineryproductsworkefficiency,operationquality,environmentslprotection,operationPerformaneeandautomationareincomparableinthepast,andaremovingtowardsthedirectionofintelligenceandrobotics・1,thespeedofupgradingisspeedingup.Withthedevelopmentof
3、modernhighandnewtechnology,thetechnologydevelopmentandirmovationoftheworldengineeringmachineryproductsaremoreandmorefastThecycleofgenerationisbecomingshorterandshorter,theproductpopulationcanbeexpanded,andtheproductlineisimprovingdaybyday.Allthebigcompaniesi
4、ntheUnitedStates,EuropeandJapanhavesuccessivelylaunchedthesecondgenerationandthirdGenerationuntilthefifthgenerationofconstructionmachinerynewproducts・2,theenvironmentalprotectionrequirementsareimprovingdaybyday.Forthesustainabledevelopmentofhumansocietyandec
5、onomy,thepublicoftheworldhasputforwardmoreandmorestrictenvironmentalprotectionRequirements,whethertheconstructionmachinerygoodenvironmentalperformance,willbecomeoneoftheimportantindexestoparticipateintheinternationalmarketcompetition,andhasbecomealotofindust
6、rialdevelopedcountries"Marketaccesscard"〃・Therefore,theUnitedStates,Europe,Japanandothercountrieshavedevelopedthe"peopleandtheenvironmentarefriendly"constructionmachinery.1,smallandlargespecificationswiththedevelopmentoflargeandmedium-sizedconstructionmachin
7、eryisstillthemainstreamoftheglobalconstructionmachinery,theannualsalesofabout70billionU・s.dollars,buttheworkThetendencyofthemachinetoextendtowardsboththeminiaturizationandthelargescaleisobvious・ThecountriesoftheUnitedStates,EuropeandJapanarethemajorconsumerm
8、arketsforconstructionmachineryTheconstructionofinfrastructureprojectsisdecreasingdaybyday,whiletherenovation,protectionandurbansmall-scaleengineeringprojectsareincreasing・Inordertosavehighermanp
