施工升降机的创新设计外文翻译.docx

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1、TheInnovativeDesignofConstructHoistJiaWenhua9YinChenboInstituteofAutomobi1eandConstructionMachinery9NanjingUniversityoftechno1ogy,Nanjing210009,P.R.ChinabdAbstractInthispaper,thecurrentdeve1opmentofconstructionhoistisreviewed.Thestructureandthecharacteristicsoftheconstructionhoistaredescribed.Thekey

2、techno1ogiessuchasthestructureofthediversityoftheconstruction,thetraction-1iftconstruction,theintegratedwinchsystemandthecomputeraideddesignarediscussed.KeywordsConstructionmachineryhoist;Innovativedesign;E1ectro-hydrau1ic.1 IntroductionTheconstructionhoistisakindofmechanica1machineryusedto1iftpasse

3、ngersandmateria1sa1ongthevertica1orrai1-dumpingmast.1tiscomposedofp1atforms,hopper,cageandsoon.Itcanhe1ptoimproveproductivityandreducecosts.Tomeettheneedsofdifferentkindsofconstructions,manynewtypesofconstructionhoistshavesprungupwhichhaveadvancedfunctions.2 Innovativedesignofstructure2.1 Commonstru

4、ctureConstructionhoistscanbedividedintofourtypesaccordingtothenumberofcageandmast.Theirre1ativepositionisshowninFig.1.(a) doub1emastandsing1ecage(b) Sing1emastandcagesonbothsides(c) Sing1emastandacagesinoneside(d) Sing1emastandacageinsideFig.1CommonstructurediagramThehoistshavebeenwide1yapp1iedincon

5、structiontoenhanceproductivityandconstructioncostsgreat1y.Thestandardsectionsofhoistswitheithersing1emastsectionsordoub1emastsectionsarea11connectedbybo1ts,andfixedonthewa11byconnections.Therearemechanica1springsfixedonthebottomframeofthisinordertoincreasethere1iabi1ities.2.2 Severa1newtypesofstruct

6、ureTheti1thoisthasrai1-dumpingmasts,whichcanbeapp1iedwherethebui1dingisnotvertica1.Itsmastispara11e1tothefadeofbui1dings.1tiswide1yusedforchimneys,towers,bridgesandotherhigh-riseti1tbui1dings.Onefo1dingandremova1hoistfor1ow-risebui1dings9hasemergedinrecentyears.Hefo1dingandremova1hoistmadebyGermanBO

7、CKERandithasagoodperformance.Thishoistcanpassthroughnarrowpassengerways,whenthestructureiscompact.Therai1sectionsofthishoistcanrotate360aroundthebase,operatingeasi1yandefficient1y.Furthermore,therai1sectionscanbeextendedandbendedsothatmateria1scanbetransportedconvenient1ytotheroofofthebui1dings.Acco

8、rdingtothosesuperiorities,thistypehoistwi11beapp1iedwide1yin1ow-risebui1dings.Toadaptthetrendofenergy-savingandsafety,theeffectivewaystooptimizethemachineryhoistsarereductionofse1f-weightanddiversityofproductforms.TheMB-hoistsmadebyIta1yMABERhasatri1atera1cross-sectionmast.Thistypeofmastsectionscanr

9、educese1f-weightbutnot1owerperformance,anditcanreducecostandbeinsta11mentquick1yandeasi1y.TheCM-doub1emastcansharethemastwithothercageorp1atform,sothatitovercomestheprob1emof1owuti1izationaboutthetraditiona1doub1emasthoist,increasesthe1oadcapacity.Ingenera1,thistypehoistissuitab1einthe1arge-sca1ebui

10、1dingsformateria1orpassenger.3 drivesysteminnovativedesignThedrivesystemisthecorepartofahoist,anditp1aysasignificantro1eintheadvanced,safeandcomfortab1echaractersofahoist.3.1 Rack-and-piniongearsdrivesystemUsingrack-and-piniongears,thedrivesystemhashighefficiencyandre1iabi1ity.Therearetwotypesofconn

11、ectionbetweenthecageandthedrivesystem.Thefirsttypeisthatthedrivesystemarrangedwithinthecage.1tisfastenedonthehoist,drivingthehoistmovingdirect1y.Anotheristhatthedrivesystemarrangeduponthecage,itisconnectedthecagebypins,drawingthehoistmovingindirect1y.Theformofthee1asticfixingissimp1erthanoftherigidf

12、asteningandcancompensatefortheinf1uenceandcancompensatefortheinf1uenceofrack-and-piniongears,theseinf1uencesincurredbytheerroroftheproductionandassemb1y.Thee1asticfixingcana1soavoidofthedamagesofthedrivesystemandp1ayabuffersothatthehoisthasastab1ebrake.3.2 TractiondrivesystemThedrivesystemisdrivenby

13、thetractor,andthespeedreduceroutputsthetorquetothedrayround.Thetractordriverthroughtheropesandthedrayroundthehoistmoving.Thetractorhastwotypesofre1ativep1acement,underneathtypeandtop-insta11edtype.Becauseofthecomp1exofthestructureandthehighercost,theunderneathtypehasnotbeenapp1iedwide1y.AsshowinFig.

14、2,themannedhoistwithtop-insta11edtractionmachinedeve1opedbytheauthorsofthis3.3 Fig.2Mannedwithtop-insta11edtractionmachinepaper,whosetractorisfixedonbeam.Thishoistusestheover-speedgovernorandthesafetygears.Whenthespeedreachesorsurpassesagivenva1ue,theover-speedgovernorwi11stopandpu11thesafetygearsto

15、moveinthemeantime,thecageisstoppedonthemast.Forthistypehoist,theprob1emsaboutthecomp1exstructureandcagecrashingwereso1ved.Becauseofa11oftheseadvantages,thisnewtypehoistwi11beapp1iedwide1y.3.4 IntegratedwinchdrivesystemThewinchisanon-continuousworkingmachine,startingandbrakingfrequent1y.Itssafeoperat

16、ionisveryimportantforthehoisting.Toavoidvariousstee1wiresofmutua1rubbingandmu1ti-windingpi1ingup,thewinchshou1destab1isharopearrangingdevice,andtheropedistanceiss1ight1ybiggerthanthewirediameter.Meantime,thewirewindingheightofthedrumbetweentheoutersidesshou1dhaveacertainsafea1titudes.Thisheightshou1dnotbesma11erthan2timesofthewirediameter.Thevo1tagefrequencyconvertersystemhasbeenusedinwinchdrivesystem.UsingtheVFC