英文文献装载机.docx

英文文献装载机.docx

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英文文献装载机

英文文献-装载机

Loader

Theloaderisawidelyusedinhighway,railway,construction,electricity,ports,minesandotherconstructionprojectsofearthandstoneconstructionmachinery,whichismainlyusedforloadingsoil,gravel,lime,coalandotherbulkmaterials,isalsoavailableontherock,hardsoilformilddiggingoperation.Dressupdifferentauxiliaryassemblycanalsobebulldozing,liftingandothermaterialssuchastimberloadingandunloadingoperations.Ontheroad,especiallyinhighgradehighwayconstruction,theloaderforsubgradeengineeringexcavation,asphaltmixtureandcementconcretematerialfieldofaggregateandloadingoperations.Inadditioncanalsobepushedandtransportedsoil,scrapethegroundandtractionmachineryandotheroperations.Becausetheloaderisoperatingspeed,highefficiency,goodmobility,convenientoperationandotheradvantages,soitbecomestheconstructionofearthandstoneconstructionofoneofthemainmachine.

Chinaloaderindustrydevelopment

ChinesemodernwheelloaderbeganinthenineteensixtiesmiddletypeZ435.

Themachineasawholeframe,rearaxlesteering.Afterseveralyearsofefforts,intheabsorptionoftheworld'smostadvancedtechnologyonthebasisofwheeled

loader,thesuccessfuldevelopmentofthepowerof162KWshoveltypewheelloader,stereotypedasZ450（laterZL50）,andinDecember18,1971officiallyidentifiedbyexperts.SothebirthofChina'sfirstarticulatedwheelloader,thusinauguratingChinaloaderindustryformationanddevelopment.Z450typeloadingmachinewithhydraulicmechanicaltransmission,powershift,doubledrive,hydrauliccontrol,articulatedsteering,brakingandothermodernafterburnergaspushesthewheelloader'sbasicstructure,thentheworld'sadvancedlevel.AlsobasicallyrepresentsthefirstgenerationofChinesebasicstructureforwheelloader.Themachineisinoverallperformancehasgooddynamicperformance,insertionforcealargebreakoutforce,flexible,convenientoperation,highoperationefficiencyandaseriesofadvantages.1978,dayaccordingtothemachineryoftherequest,toformulateawillowlabourZ450asabasictypeofwheelloaderseriesofstandardchinese.Whenformulatestandard,theZrepresentsloader,replaceLwith"4"representsthewheel,Z450forZL50,thenworkedoutinLiuoftypeZL50asabasictypeofChineseZLwheelloaderseriesstandard,thisistheChineseloaderhistorysignificantturningpoint.Thestandarddevelopedbytheindustrydivisionoflabor,industrialengineering,LiumanufacturingZL40aboveislargeandmedium-sizedwheeledloaders,asworkers,appropriateindustrymanufacturingZL30belowthesmallwheelloader,andgraduallyformedawillowindustry,building,asworkersandtoworkersatthetimeoftheloaderfourbackboneenterprises.To70timeend,atthebeginningof80timeChinaloadermanufacturingenterpriseshasincreasedtomorethan20,preliminaryformedChinaloaderindustry.Sofar,Chinawheeledloaderhasbeendevelopedtothethirdgeneration,butthebasicstructureremainsbyZ450（ZL50）evolved.Thesecondgenerationisnotvariedgreatly,thethirdgenerationchangesslightlylargernumber.In2001Chinaloaderindustrytotalsaleshaveexceeded30000,houseworldtheloadertotheforefrontofthemarket.Therefore,atpresent,Chinahasbecometheworld'sloaderpowerproduction.In2006Chinaloaderindustryentireindustrytotalsalesof129793units,morethan112527unitsin2005,up15.3%,anetincreaseof17266,netincrementoverChinaloaderindustry"eightfive"anypreviousyeartotalsales,itcanbesaidthatin2006Chinaloaderindustryisalsoaprosperousyear.20071-11month,loader26majorenterprisessoldatotalof143794,anincreaseof34397（109397）,anincreaseof31.4%;totalexportsfor8606,accountingfortotalsalesvolume6%,（3234）increasecomparedtothesameperiod5372,amplitudeisamountedto166.1%.In2008,Chinaloaderindustrygrowthratereduction,1-7month,accumulativetotalofcountrywidefork-lifttrucksalesvolumeis120449,anincreaseof30.5%.Chinaloaderindustryindevelopmentatthesametime,someproblemsalsoareshownincreasinglycomeout.Especiallytheindustryentersadoorsilllow,viciouspricecompetitionleadstolowerprofitabilityofthebusiness,themarketingideaismissing,themarketisexpanding,productqualityandreliability,moreover,theproductstructureandtheagingandupgradingofservicesincreasedcostisdifficulttodigestandotherfactorsseverelyrestrictthefurtherdevelopmentofindustryandtheimprovementofquality.Therefore,Chineseloaderenterprisesmustseizenewdevelopmentsituation,intheproductR&Dreflectthedifferentialstrategyandcostleadingstrategy,continueto

strengthentheindustrytotheenterprisecenterofnationalleveltechnologyandinstitutionsofhigherlearningandscientificresearchinstitutesasthemainresearchanddevelopmentsystemconstruction,buildthevaluechainmarketing,strengthenbrandconstruction,enhancebrandvalue,onlyinthiswaytoremaininvincibleinthenewsituation.China'slargestwheelloaderisXugongLW1200K.

InNovember23,2010,baumachina2010exhibitionheldagrandoccasion,theXulaborscienceandtechnologyshocklaunchedthelargesttonnageLoaders--LW1200K,andspotsales,intwenty-firstCenturysecondtenyearscome,leadingtheChineseloaderproducttechnologydevelopmentinthenewera.TheappearanceofLW1200K,maketheXugongandEurope,beautyenterprisesjuxtaposed,tobecometheworld'sabilitytodevelopthelevelofproducts,oneofthefourgiants.LW1200KloaderisXugongbasedonmarketdemand,targetingtheinternationalhigh-endtechnologymainstream,independentresearchanddevelopmentofnewproducts,iscurrentlyChina'slargesttonnagewheeledloader,withinternationaladvancedtechnology,equipment,internationalfirst-classparts,reflectsthequality,safetyandenvironmentalvalues.AndsuccessfullypassedbytheJilinUniversity,BeijingInstituteofTechnology,SoutheastUniversity,ChinaUniversityofMiningandTechnologyandanumberofindustryexpertsidentification.Identificationofthecommitteegaveahighevaluation,andagreedthat"isChinaloaderindustryamajortechnologicalupgradeandbreakthrough,tobreakforeignlargeloadersabsolutemonopoly,promoteChinaloaderindustrytechnicalprogress,leadingtheloaderindustrytowardhighreliability,hightechnologycontent,highperformance,largetonnagethedirectionofdevelopmentofepoch-makingsignificance".Use

Theloadingmachineismainlyusedforloading,unloading,shovel,earthandstonetypebulkmaterial,alsoonrock,hardsoilformilddigging.Ifadifferentworkdevice,canalsocompletethebulldozing,lifting,loadingandunloadingmaterialswork.Inthehighwayconstructionismainlyusedforsubgradeengineeringexcavation,asphaltandcementconcretematerialfieldofaggregate,chargingandotheroperations.Duetoitshighoperatingspeed,goodmaneuverability,convenientoperationandotheradvantages,andisdevelopingveryquickly,becomethemainmachineryconstructionofearthandstone.

Classification

Thecommonlyusedsinglebucketloadingmachine,accordingtothepoweroftheengine,transmission,walkingsystemstructure,loadingwayclassification.In1,theenginepower:

thepowerislessthan74kwforsmallloader.Thepowerinthe74~147kwformedium-sizedloadersandpowerinthe147~515kwforlargeloader;thepowerismorethan515kwforoversizeloadingmachine.In2,transmissionforms:

ofhydraulicmechanicaltransmission,smallimpactvibration,transmissionandlongservicelife,convenientoperation,speedandloadcanbeadjustedautomatically,

generallyinlargeloaderuses;thehydraulictransmission:

steplessspeedregulation,betweentheoperationisstarted,butpoor,generallyonlyinsmallloaderontheuseof;thepowertransmission:

steplessspeedregulation,reliablework,simplerepair,highcost,generallyinlargeloadersused.3,walkingstructure:

1tiretype:

lightquality,speed,flexibility,highefficiency,noteasilydamagedpavement,groundpressure,poorthrough,butarewidelyused;thecrawler:

groundingthanthesmall,throughthegood,lowcenterofgravity,goodstability,strongadhesion,largetractionforce,cuttingforce,ratiooflowspeed,flexibility,highcost,relativedifferencewhenwalkingeasilydamagedpavement.4,loadingandunloadingmethod:

1beforeunloadingtype:

hastheadvantagesofsimplestructure,reliablework,goodvision,suitableforavarietyofoperatingfield,wideapplication;therotary:

workingdeviceisinstalledontherotary360Otable,lateralunloadingwithoutturning,highworkefficiency,butthecomplexstructure,quality,highcost,sidestabilityispoor,isapplicabletosmallvenues.Theunloadingtype:

front-endloaded,unloaded,theoperationefficiencyishigh,therearsafetygood.

Selectionprinciple

Typeselectionofmainbasis:

operationandusetoselectanddeterminethe.Generallyinthequarryandsoftbaseoperations,usingacrawlerloader;2,powerselection:

thegeneraluseofengineeringmechanicaldieselengine,thespecialregionaloperations,suchaselevationhigherthanthatof3000mplace,shouldusethespecialhighprototypedieselengine;3,transmissiontypeselection:

selectionofhydraulic-GeneralMechanicaltransmission.Thekeycomponentsareconverterselectionform.Chinanowproducesloaderselectsthedoublesinglestage,twophasefluidpowerconverter.4,intheselectionoftheloader,andfullyconsidertheloaderbrakingperformance,includingapluralityofthebrake,parkingbrakeandemergencybrakethree.Brakeshoetype,acaliperdiscand