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1、TheInnovativeDesignofConstructHoistJiaWenhua,YinChenboInstituteofAutomobileandConstructionMachinery,NanjingUniversityoftechnology,Nanjing210009,P.R.ChinaAbstractInthispaper,thecurrentdevelopmentofconstructionhoistisreviewed.Thestructureandthecharacteristicsoftheconstructionhoist
2、aredescribed.Thekeytechnologiessuchasthestructureofthediversityoftheconstruction,thetraction-liftconstruction,theintegratedwinchsystemandthecomputeraideddesignarediscussed.KeywordsConstructionmachineryhoist;Innovativedesign;Electro-hydraulic.1IntroductionTheconstructionhoistisak
3、indofmechanicalmachineryusedtoliftpassengersandmaterialsalongtheverticalorrail-dumpingmast.Itiscomposedofplatforms,hopper,cageandsoon.Itcanhelptoimproveproductivityandreducecosts.Tomeettheneedsofdifferentkindsofconstructions,manynewtypesofconstructionhoistshavesprungupwhichhavea
4、dvancedfunctions.2Innovativedesignofstructure2.1CommonstructureConstructionhoistscanbedividedintofourtypesaccordingtothenumberofcageandmast.TheirrelativepositionisshowninFig.1.abcd(a)doublemastandsinglecage(b)Singlemastandcagesonbothsides(c)Singlemastandacagesinoneside(d)Singlem
5、astandacageinsideFig.1CommonstructurediagramThehoistshavebeenwidelyappliedinconstructiontoenhanceproductivityandconstructioncostsgreatly.Thestandardsectionsofhoistswitheithersinglemastsectionsordoublemastsectionsareallconnectedbybolts,andfixedonthewallbyconnections.Therearemecha
6、nicalspringsfixedonthebottomframeofthisinordertoincreasethereliabilities.2.2SeveralnewtypesofstructureThetilthoisthasrail-dumpingmasts,whichcanbeappliedwherethebuildingisnotvertical.Itsmastisparalleltothefadeofbuildings.Itiswidelyusedforchimneys,towers,bridgesandotherhigh-riseti
7、ltbuildings.Onefoldingandremovalhoistforlow-risebuildings’hasemergedinrecentyears.HefoldingandremovalhoistmadebyGermanBOCKERandithasagoodperformance.Thishoistcanpassthroughnarrowpassengerways,whenthestructureiscompact.Therailsectionsofthishoistcanrotate360aroundthebase,operating
8、easilyandefficiently.Furthermore,therailsection
