机械毕业设计外文翻译Word文档格式.docx

机械毕业设计外文翻译Word文档格式.docx

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专业班级：

机械设计制造及其自动化04级2班

指导教师：

杨庆山

河北工程大学机电学院

2008年6月

装载机发展概况

Abstract

Thispaperhavediscusseds.s.ZL-50typefork-lifttruckmainlyoverallfictitiousprototypedesignaswellassomekindsoftypicalschoolworkoperatingmodesimitateandemulate,includeequipmentandtheoverallpartsneededbuildmould.Inthisdesigncourse,haveappliedADAMSsoftwareandthesoftwareofPRO/ENGINEER.ADAMSsoftwareisusedintheemulationofsomekindsofschoolworkoperatingmodes,andthesoftwareofPRO/ENGINEERisusedtobuildmouldmainly.Throughthesimulatedemulationforsomekindsofoverallschoolworkoperatingmodes,canseerelativelydistinctlytheoverallpossibleconditioninactualschoolworkcoursethatmet,canintimemodify,havereducedactualdesigntime,haveraisedproductionefficiency.

TheinnovationofthisdesignZhiisinin,imitateandhaveemulatedfork-lifttruckthe3kindsoftypicalschoolworkoperatingmodeinactualschoolwork,iseffectagainhaveimitatedinactualschoolworkthehydraulicimpactofuse,sowhenbeinghelpfultosolveactualloading,theactualproblemofmeetingthestockthatishardtouninstallcansoraiseproductionefficiency.

Keywords:

Fork-lifttruck、fictitiousprototype,buildmould,emulation,optimization、productionefficiency

LoaderDevelopment

China'

smodern20wheelloadersbeganinthemid-1960softheZ435.Theaircraftasawholerack,rearaxlesteering.Afteryearsofhardwork,theattractionwastheworld'

smostadvancedtechnologywheelloaderonthebasisofthesuccessfuldevelopmentofthepowerof162KWofshovel-fitwheelloaders,stereotypesforZ450（laterZL50）,andin1971December18,formallyappraisedbyexperts.ThusthebirthofChina'

sfirstarticulatedwheelloader,thuscreatingourindustryloaderformationanddevelopmenthistory.

Z450-typeloaderwithhydraulicmechanicaltransmission,powershift,Shuangqiaoshandrive,hydraulicmanipulation,articulatedpowersteering,gasoilAfterburnerbrakewheelloaders,andothermodern,thebasicstructureoftheworld'

sadvancedlevelforthetime.Basicallyrepresentthefirstgenerationofwheeledloadingthebasicstructure.Theaircraftintheoverallperformanceofdynamic,andinsertionforceariseofpowerandflexibility,manipulationoflight,thehigheroperatingefficiencyofaseriesofadvantages.

1978,HeavenlyCreationsbytheDepartmentinaccordancewiththerequirementsofmachinery,workedouttoLIUGONGZ450-basedtypeofwheelloadersseriesofstandards.Thedevelopmentofstandards,withreservationsZrepresentativesloaders,Lreplacedby"

4"

onbehalfofwheel,forZL50toZ450,itissodevelopedaLIUGONGZL50-basedChinaZL-wheelloadersseriesofstandards,thisisWongloaderonthedevelopmentofChina'

samajorturningpoint.Thestandardwasworkedoutbytheindustryafterthedivisionoflabor,LIUGONGXiamenZL40themanufactureofthelargeandmediumwheelloaders,asworkers,tothefollowingsmallandmedium-sizedmanufacturingZL30wheelloaders,andgraduallyformedaLIUGONGXiamenworkers,and10%forworkersattheloadertofourbackboneenterprises.Tothelate1970s,early1980sloadermanufacturingenterprisesinChinahasincreasedtomorethan20,Chinahasinitiallyformedtheloaderindustry.Sofar,Chinahasdevelopedwheelloadertothethirdgeneration,butthebasicstructureisstilltheZ450（ZL50）evolvedfrom.Changeisnotaverylargesecondgeneration,thirdgenerationofsomelargerchanges.2001Chinaloaderindustry-widetotalsaleshaveexceeded30,000Taiwan,theworldloaderintheforefrontofthemarket.Therefore,atpresent,Chinahasbecometheworld'

sloadermarketingpower.

Prospectofsmallloader

Foralongtime,smallloaderalwaysbeenneglectedinthestatusofagovernmentdepartment,nottoregulatethemanagementoftheindustry,well-knownbusinessesloaderproductsisdismissive.However,thesedidnotaffectsmallloader（hereinafterreferredtosmallequipment）rapiddevelopment,andnowwithasmallmarketdespiteitshugemarketdemandhasattractedsuchastheLongrenownedengineeringmachineryenterprisestoparticipateinthecompetition,themainbattlefieldintheruralareaswiththesmallsizeofthemarket,saleshavealreadyreached4~5million,morethan200brandstoparticipateinmarketcompetition.Butsmallmarketcanbesaidtobeinstalledspeedexpansiondisorderlycompetitioncoexist.Howtoachieveindustrialupgradingisplacedinfrontofthesmallequipmentindustrymustresolveaproblem.

Lackindustryattribution

Comparedwithlargeandmedium-sizedindustriesloaders,smallwiththedevelopmentoftheindustrycanuse"

plan"

todescribe,notonlygovernmentdepartmentsrelatedtotheabsenceofindustrialpoliciesordevelopmentplans,andtodate,industryhasnotcompletelyclearattribution,therealityofthesmallequipmentindustriesacrossengineeringmachinery,agriculturalmachineryandconstructionmachinery,thethreeindustriesofgreyareas.Despitethesmallmarketwithaflourishing,butallsmallequipmentmanufacturersanddealerscandodgeexistsintheindustrybeforethemanyobstaclestodevelopment.

Smallinstalledmainlyreferstotheratedloadbetween0.3~0.9Tproducts,alsoknownasmicro-loader.Asindustryownershipisnotclear,withsmallproductshasbeennounifiednationaltechnologyandqualitystandards,theoverwhelmingmajorityofproductsareinstalledinthesmall-wheeledtractordevelopedonthebasisofthe.Inadditionsmallinstalledtheproductiscurrentlyusedbythemaincomponentpartsfromtractorsandlighttruck,notbytheneedsofsmallequipmentforlow-speedheavy-dutybridge,specialbinskeycomponentparts,includingevensmallprojectswithspecialtires.Asalowtechnicalcontent,resultinginaverylowthresholdofindustryandbecomethedefacto"

open"

industry,anyperson,businesscanbeveryeasilyinstalledintosmallindustries.

Smallenterpriseshaveinstalledanumberof"

fans"

accordingtoConstructionMachineryAssociationScraperBranchSecretary-GeneralChenKaiYun,aconservativeestimateatmorethan200.MoreconcentratedinShandongLaizhou,Taian,Weifang,inLuoyang,HenanProvince,Quanzhou,FujianProvince,andotherplaces,annualsalesofmorethan2,000Taiwanenterpriseswithasmallhandful,themajorityofsmallbusinesseswithannualsalesin3200bythefollowing,withtheproductionofsmallenterprises,thesameeasytosetupandclosedown.

Itispreciselybecausethestrengthofsmallenterpriseswithverylimitedproductswithouthightechnologycontent,inthevastmajorityofenterprisestoparticipateinmarketcompetitionareintheprocessofbasicallyasinglemeanstopricecompetitiontosellproductsforthepurpose,withouttakingintoaccountfuturemarketthings.Inthecommonwiththecreditindustry,services,brandcompetitionmeanssmallindustrybasicallynotinstalled,inadditiontodifferencesinthestrengthofenterprisesandproductdifferentiation,marketingandmanagementphilosophythatisthedeep-seatedcauses.

Becauseusersoftheproductsofsmallequipmenttomainlyruralusers,anduserscanonlycoverruralfarmmachinerysalesnetworks,constructionmachineryandconstructionmachinerysalesareonlypartofthenetworkcoverageinruralareas.Andthesaleofequipmentsimilar,withsmallproductsalsorequiresagentsordistributorscantaketheinitiativetosellproductstousersandtouserswithstandardandthoughtfulservice,andfarmmachinerydealersmorecustomarysitshopoperator,hasnosalesforce,Thereisnospecializedserviceteams,moredifficulttoexpectthemarketplanning,customermanagement.Constructionmachinerydealersandfarmmachinerydealersalsohavealotofsimilarities,andengineeringmachinerydealersnotaccustomedtodealwithruralusers.Therefore,thesmallmarketisnotmaturewiththesalesnetwork,toalargeextentaffectedthemarketmaturationprocesscannotbeachievedontheonehand,theuserguide,ontheotherhand,cannotbeachievedonthemanufacturersfacilitatingrole.Operatingenvironmentandtheuseofthedifferenthabits,resultinginalackofsupportfornon-smallpiecesofinstalledproductscanhardlymeettheactualneedsofusers,increasingthecostofservicesatthesametime,improvecustomersatisfactionbecomealmostimpossibletask.

Increasedmarketdifferentiation

Unliketheprecedingtwoyears,withnosmallonthefutureofthemarketisbasicallynodoubts.However,whenthesmallruralinstalledbythenewfaceofthebuildingthevastpotentialmarketdemand,whetheritistheproductitself,orthelevelofindustrialdevelopmentisclearlynotsatisfied.

Andbecauseofthedoubleimpactofexternalfactors,withsmallmarketdifferentiationisaninexorabletrend.

Relyingsolelyonpricecompetitionmeansdoesnotmakethesmallfavorablywithindustrydevelopment.Infact,itisduetoexcessivepricecompetition,leadingtosmallenterpriseswithlowprofitability,sales,andtheprosperityoftheentireindustrycannothidethecrisisofsurvival.Anticipatewithafewsmallcompanieshavestartedthe"

innovation"

intheproductupgradesatthesametime,learnfromtheequipmentindustryandotherrelatedindustriesexperience,toestablishtheirownmarketingteamanddistributionnetworkandmarketcompetitiontendstodifferentiation.

Inthehigh-enduserswiththeneedsofsmallchange,directlycontributingtosmallenterpriseswiththedifferentiation,withtheconceptofprogressandconsumerfinancialstrengthof