机械毕业设计英文外文翻译304栏板起重装置的结构与设计 2.docx
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机械毕业设计英文外文翻译304栏板起重装置的结构与设计 2.docx
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机械毕业设计英文外文翻译304栏板起重装置的结构与设计2
附录
Steeplechaseliftingdevicestructureanddesign
LiftingGearsteeplechaseanddesignofthestructureoftheliftingmechanismisrelativelytraditional,thetailplateliftingmechanismusingonlyasinglefueltank,sothatthehydraulicsystemofthepipeissimple,convenientcontrolandhighreliabilityofthehydraulicsystem,andandeaseofinstallation.Theaboveanalysisandcalculationoftheinstitutionssuchasthestructureandpropertiesofthemathematicalrelationshipbetweenparameters.Topromoteinter-relatedwiththesleeveofthefrictionandwear,thesleeveguidegrooveangleandflipangleandahighdegreeofadaptability,suchasliftingwillbesubjecttofurtherresearchandtheanalysisofthestructureofhair.
LiftingGearsteeplechasevehiclemovementsinforeigncountriesasthereardoor(endplate),itsinstalledinthecarnamedafterthetail.Inthispaper,accordingtonationalstandardscallaliftinggearsteeplechase.Steeplechasealiftingdeviceinstalledonthevaninthecarriageofgoods,notonlytodemonstrateitsproprietarywater-resistantdust-prooffunction,butalsointheloadingandunloadingofgoodsmechanizationachieved.
1.steeplechasedevelopmentLiftingGear
LiftingGearsteeplechasedevelopment,largelyinforeigncountriescanbedividedintofourperiods.Thefirstgenerationofproductsinthe30'sattheendofthiscentury,characterizedmainlyliftingcylinder,andthesteeplechasemanuallyturnedon,fromoraboutthequalityof500kg,steeplechase(alsoknownasloadingplatforms)touchdownangle9°~10°.Atpresent,thisproductinSouth-EastAsia,Japanstillinuse,90years,isstilltheUnitedStatesbythenewdevelopment.Second-generationproductsintheearly50'stheEuropeanmarket,inthefirstgenerationofproductsbasedontheincreaseofturnovertoclosethefueltank.Liftandflipthefueltankbytwotoachieveindependence.Themostcommonisatype4tank,butalsoofthedouble.Liftingthequalityofmorethan500kg,platformloadingtouchdownangle10°,flipactioncontrolbasedontheexperienceoftheoperator.TheproductsaremainlyusedintheAmericasandSoutheastAsia.Third-generationproductsinthe70'sattheendoftheEuropeanmarketisthesecondgenerationofproductsbasedontheincreaseinthefueltankofthefifth.Onlythefueltankofthehydraulicsystemintherelativepositionsofthemaineffectofmemoryfunction,sothattouchdowntoloadingplatform,offtheflipactionisnolongercontrolledbytheoperatorbythehydrauliccontrolsystemitself,sothattheprocessisrelativelysmoothtake-offandlandingandsecurity.Touchdownangleisgenerally8°~10°.Ifitdoublesasacardoor,andaresultofincreasedplatformsize,anglemayalsobelessthan8°.AtpresenttheseproductstoEuropeandAmericaingeneral.Fourth-generationproductsduringtheearly90s,anditshydraulicsystemandfunctionofprincipleswiththethird-generationproducts,onlyanincreaseofthefueltankthesizeofmemory,somemoryandincreasethescopeofaction.Itisdifferentfromthethirdgenerationoftheproductliesintheloadingplatformtoincreaseitsspecialstructure,fromonebodytotwoactivitiesconnectedtotheplatformafterthetouchdown,notonlycanautomaticallyflip,butthereisasinkingactiontoachievethetouchdownangle6°,evenin6below.Atpresent,theproductsintheNetherlands,YugoslaviaandChinahasappliedforautilitymodelpatent.Thedomesticmarkethasbeenstereotyped.Fromtheperformance,security,reliabilityresults,thefourth-generationproductswillbegraduallyreplacedthesecondandthirdgenerationproducts.Thefirstgenerationofproducts,becauseofitssimplestructure,lightweight,althoughthetechnicalcontent,butwiththeadvantagesofeasymaintenance,etc.,indevelopingcountrieswillstillhaveacertainmarket.LiftingGearsteeplechasedevelopmentinChinaonlyafewthingsmorethanadecade.TheformerMinistryofPostsandTelecommunicationsin1985importedfromJapanwithanumberofliftingdevicessteeplechasevan.Sincethen,bytheSpecialPurposeVehicleInstituteofHanyang,HubeiautopartsplantandCommunicationMinistryofPostsandTelecommunicationsMachineryFactoryMingshuithreecooperationmadetheresearchanddevelopment,whichlastedmorethantwoyears,duetovariousreasonscannotbeputintouse.Inearly1988,MinistryofPostsandTelecommunicationsCommunicationsMachineryFactoryMingshuitechnicalstaff,continuetodevelop.PostOfficeinBeijingtohelpthestrong,thankstotheeffortsofthepastfouryears,increasingproductqualitystabilized.Earlyuseofdomesticproductsasadrivingforceforcarengines.Toachievein1992acarbatteryasthedrivingforceofthehydraulicpumpstation.After1992,liftinggearsteeplechas
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- 机械毕业设计英文外文翻译304栏板起重装置的结构与设计 机械 毕业设计 英文 外文 翻译 304 栏板 起重 装置 结构 设计
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