移動車庫設計的外文翻譯

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<文獻翻譯一：原文>FiniteAnalysisandResearchofLift-slidingStereoGarageStructureLongbiaoZhu,HuiWang,JingliangWang,LiuPeng,TianchengZhu,ZhihuiZhu.FiniteAnalysisandResearchofLift-slidingStereoGarageStructure[A].InformationEngineeringResearchInstitute,USA.Proceedingsof20163rdInternationalConferenceonMechanicLongbiaoZhu,HuiWang,JingliangWang,LiuPeng,TianchengZhu,ZhihuiZhu.FiniteAnalysisandResearchofLift-slidingStereoGarageStructure[A].InformationEngineeringResearchInstitute,USA.Proceedingsof20163rdInternationalConferenceonMechanical,Industrial,andManufacturingEngineering(MIME2016)[C].InformationEngineeringResearchInstitute,USA:智能信息技術(shù)應用學會,2016:10.ABSTRACT:Thepapertookthelift-slidingstereogaragewithfourfloorsandsixcolumnsastheresearchobject,establishedsteelstructurefinitemodel,determinedtheloadtypeandputforwardloadconversionmethods.Onthisbase,aimingatsteelstructurefinitemodel,staticanalysis,modelanalysis,dynamicanalysisandseismicresponsespectrumanalysiswerecarriedout.Itcalculatedandobtainedthemaximumdisplacementofthebeams,steelstructureinherentfrequencyandvibrationmodeaswellasdisplacementchangesofsteelstructureundertheactionofseismicload.Thesimulationresultsshowthestiffnessofsteelstructurecanmeetthedesignrequirementforresisting8gradewindandM7earthquake,andhasgreatsafetymargin.1INTRODUCTIONInrecentyears,withtherapiddevelopmentofnationaleconomy,thedramaticincreaseoftheconsumerswhopossessthecarleadstoamajorityofsocialproblems,suchastrafficcongestionandthedifficultyofparking,etc,andseriouslyaffectsthepeople'slivingenvironment,therefore,solvingthedifficultiesofparkinghasbecomeaurgentsocialproblemtoberesolved.However,thelift-slidingstereogaragebecomesthemostwidelyusedparkingequipmentintermsoftheadvantagesthatincludesmalllandoccupied,amajorityofeffectiveandconvenientparkingstalls,convenientlyparkingandtakingcars,lowercostofconstructionandmaintenanceaswellashighersafetyandreliability.Basedonthecomplexityofbearingofgaragestructure,theadditionofloadcanleadtothelargerdeformationontheweakpartsofthestructure,whichaffectstheoverallperformanceandevencausessomeunpredictablesafetyaccidentsofthefailureofthegarage.Toassurethesafe,reliableandefficientoperationofthegarage,itisverynecessarytodothesimulationaboutfiniteelementanalysisonthegaragestructureforensuringthatstructurehasenoughstrength,stiffnessandstability.Takingliftslidingstereogaragewith4floorsand6columnsastheresearchobject,thedrivingmodeofacombinationofmotor,chainandsteelwirerope,theverticalspeedandtransversespeedarerespectively5m/minand8m/min.Thegaragebuiltmustmeettherequirementofresisting8gradewindandM7earthquake.2CREATEFINITEELEMENTMODELOFGARAGESTRUCTUREPlaneviewoflift-slidingstereogaragewith4floorsand6columnsisshownasfigure1,itismainlycomposedofbearingframe,liftingmotor,trailerpalletandmovabletrailerframe.Forstereogaragebelongtoakindofthelarge,highredundancyandcomplexstructuresystem,itisdifficulttodirectlydofiniteelementanalysisofthegarage,sobeforecarryingoutthesimulation,thestructureofgaragemustbereasonablysimplified.Figure1.Planeviewoflift-slidingstereogarage.Thesteelstructureofgaragesimplifiedisshownasfigure2,itismainlycomposedoffrontandrearcolumns,frontandrearbeams,longitudinalbeamsandinclinedsupports.ThematerialisQ235,elasticmodulusE=2.0×1011pa,poisson'sratioμ=0.3,thedensityρ=7850kg/m3.ThespecificationofcolumnisH200*100,specificationoflongitudinalbeamsarerespectivelyH300*150andH200*200,specificationofhalfH-beam’sisH200*100,specificationofinclinedsupportisH50*50.ThepaperchoseANSYSsoftwaretocreatefiniteelementmodelofsteelstructurethroughtheparameterizedmethod.Intheprocessofbuildingthemodel,thebeams,columnsandinclinedsupportadoptBEAM188unit,thestyleofconnectionofthecomponentsisrigid[1].ThedistancebetweenadjacentparkingstallofthegarageinXdirectionis2.5m,thedistanceinZdirectionis6.4m,theheightoffirstflooris2.54m,theheightofeachfloorsfromthesecondfloortotheforthflooris1.7m.Themodelbuilthasfourfloorsandsixcolumns,andcanprovide21parkingstalls.ThegaragegivesprioritytoDtypeofcars,thesizeofvehicleis5000mm×1850mm×1550mm,theweightis1700kg,theweightofcalculationis2000kg.Figure2.Steelstructureofstereogaragesimplified.3STATICSANALYSISOFGARAGESTRUCTURETheloadsofsteelstructureofstereogaragearedividedintofourcategories,whichincludeconstantload,variableload,windloadandearthquakeload.Theconstantloadismadeupofbearingframe,trailerpallet,liftingandtransferringmotor,andmovabletrailerframeandsoon,applyingthespecificmechanicsformulacalculatestheconstantload,andthentheloadconvertedisallottedtothenodesbearingloadsofsteelstructure.Thevariableloadincludesvehicleload,snowload,andweightofstaffandequipment,etc.Inthispaper,itonlyconsiderscarloadandsnowload.Forcarload,accordingtotherate,itisabletobeevenlyallottedtothenodesbearingloadsofsteelstructurethroughfourpadlocksfromthetrailerpallet[2].Snowloadandwindloadhavesimilarconversionmethod,butthesnowloadisuniformlydistributedtothenodesbearingloadsofsteelstructureontheroofofgarage.Intheprocessoftrailerpalletthatbearsthecarmovingalongthehorizontaldirection,itwillimpactonsteelstructure.Theimpactloadcanbecalculatedthroughthemethodof1.25timesoffullmassthatincludestheloadoftrailerpallet,movabletrailerframeandthecar,anditusuallyisaddedtothenodesbearingloadsofsteelstructureonthesecondandthirdfloor.Themonsoonhavinganeffectontheanti-winddevicecanproducewindload.Thewindloadiscalculatedwiththelinearconversionmethodandevenlyallottedtosteelstructure[3].Theearthquakewillgenerateseismicloadthatisimposedtothegaragestructure,therefore,theseismicloadcanbecalculatedwiththeconversionmethod,andthenaddedtosteelstructureintheformofacceleration[4].Accordingtoloadconditions,theforcestatusofmodelcanbedividedintothetwocategoriesofemptyloadandfullloadconditions.Theload-calculatingundertheconditionofemptyloadismainlymadeupoftheconstantloadsthatincludebearingframe,trailerpallet,motor,movabletrailerframe,etc,butexceptforvehicleloads.Theload-calculatingundertheconditionoffullloadisconsistedoftheconstantloadundertheconditionofemptyloadandtheloadofthecarparkingonthetrailerpallet.3.1ConversionofloadThemassoftrailerpalletis400kg,themassofliftingmotoronthesecondandthirdflooris60kg,themassofliftingmotorontheforthflooris70kg.themassoftransversemotoris8kg.Themassofmovabletrailerframeis1000kg.Dtypeofthecaris1700kg,themassoftheload-calculatingis2000kg.Theweightofthefrontaxleis7kN,theweightoftherearaxleis13kN.Itcanobtainthedatumofloadsunderthetwoworkingconditionsofemptyloadandfullloadthroughtheconversionprocessing[5].AccordingtoAHandbookofArchitectureStructureLoadDesign[6],itcandeterminethecalculationformulaofstandardvalueofsnowload:SIntheformula,Skisthestandardvalueofsnowload,theunitisonethousandnewtonpersquaremeter,μrisdistributioncoefficientofroofsnow,anditsvalueis1.0inthispaper,S0isbasicsnowpressureanditsvalueis0.25kN/m.Intheanalysisofstaticsanddynamics,thecombinationcoefficientofsnowloadisusually0.7,themostunfavorablecombinationcoefficientofsnowloadis0.98,whichhasannegativeeffectonsteelstructure.Intheprocessofseismicanalysis,thecombinationcoefficientofthevariableloadis0.5.Basedontheabovedatum,itcancalculatetheloadsthatroofsnowofthegaragegenerates,andthensnowloadconvertedisaddedtothenodesbearingloadsofsteelstructureontheroofofthegarage.3.2ConversionofloadChoosingANSYSsoftwarecreatesfiniteelementmodelwiththeparameterizedmethod,andthenthemodelismeshed,itcanobtain1108unitsand2080nodes.Undertheconditionofstaticsmodule,itcansetupthesolvercontroloption,addthedisplacementconstraintstothebottomofthecolumns,andequivalentlyaddtheloadstothenodesofsteelstructure[7].Inordertogetthedeformationofsteelstructure,findouttheweakpositionofsteelstructure,anddeterminewhetherthesteelstructureisabletomeetthedesignrequirementsornot,thestaticsanalysisunderthetwoworkingconditionsofemptyloadandfullloadiscarriedout.Thestaticsnephogramofsteelstructureisshownasfigure3andfigure4.Basedonthedatumoffigure3,figure4andtable1,undertheworkingconditionsofemptyloadandfullload,itcancometotheconclusionthatthemaximumdeformationofYdirectionandthetotalvectordisplacementofsteelstructureislocatedattheupperlongitudinalbeamthatplaysanroleofsupport,andbendingdeformationofthelongitudinalbeamoccurredalongthenegativeYdirection.Theresultsofsimulationshowthemaximumdeformationofthetotalvectordisplacementliesinthemiddlelocationoflongitudinalbeamontheforthfloorandfifthcolumn,thevaluesofdeformationarerespectively1.594mmand2.381mm.Accordingtodesignrequirements,allowabledeflectionvaluesoflongitudinalbeamandcrossbeamarerespectively12.8mmand15.2mm,thedeformationvalueshouldnotbegreaterthanrespectiveallowabledeflectionvalue.Undertheconditionoffullload,themaximumdeformationvaluesoflongitudinalbeamandcrossbeamarelessthantheallowabledeflectionvalue,soitsstiffnesscanmeetthedesignrequirements.Table1.Maximumdeformationvaluesofsteelstructureunderdifferentworkingconditions.Figure3.Displacementchangenephogramofsteelstructureundertheconditionofemptyload.Figure4.Displacementchangenephogramofsteelstructureundertheactionoffullload.

<文獻翻譯一：譯文>升降式立體車庫結(jié)構(gòu)有限元分析與研究摘要：以四層六柱升降式立體車庫為研究對象，建立了鋼結(jié)構(gòu)有限元模型，確定了荷載類型，提出了荷載轉(zhuǎn)換方法。在此基礎上，針對鋼結(jié)構(gòu)有限元模型，進行了靜力分析、模型分析、動力分析和地震反應譜分析。計算得到了地震荷載作用下梁的最大位移、鋼結(jié)構(gòu)的固有頻率和振型以及鋼結(jié)構(gòu)的位移變化。仿真結(jié)果表明，鋼結(jié)構(gòu)剛度滿足8級風和7級地震的設計要求，具有較高的安全性。一、引言近年來，隨著國民經(jīng)濟的大幅增長，擁有汽車的消費者增多，造成了許多的社會問題如交通擁堵和停車難等，產(chǎn)生了嚴重影響。因此，對于人的生存環(huán)境問題,解決停車難已成為社會迫在眉睫的、有待解決的大事。所以，升降式立體車庫成為應用最廣泛的停車場。升降式立體車庫的優(yōu)點包括：占地面積小、提供較多的停車位、方便停車、降低建設成本和維護以及更高的安全性和可靠性。基于車庫軸承的復雜結(jié)構(gòu)中，荷載的增加會導致結(jié)構(gòu)薄弱部分的變形，會影響整體表現(xiàn)，甚至會發(fā)生一些不可預知的車庫的故障，甚至安全事故。為了確保安全、可靠和車庫的高效運轉(zhuǎn)，有限元分析仿真車庫結(jié)構(gòu)是非常必要的，可以確保結(jié)構(gòu)具有足夠的強度、剛度和穩(wěn)定性。本文以4層6柱升降式立體車庫為例研究對象，一個正在運行的電機，由鏈條和鋼絲繩組合，其垂直速度和橫向速度分別是5m/min和8m/min。建造的車庫必須滿足符合抵抗8級風和M7地震的要求。二、建立有限元模型車庫結(jié)構(gòu)圖1為4層6列的升降式立體車庫的平面圖，主要由軸承架，升降馬達，拖車托盤和可移動拖車框架組成。由于立體車庫屬于大型，高冗余，結(jié)構(gòu)復雜的系統(tǒng)之一，很難直接對車庫進行有限元分析，因此在進行仿真之前，必須合理簡化車庫的結(jié)構(gòu)。圖1升降式立體車庫平面圖簡化后的車庫鋼結(jié)構(gòu)如圖2所示，主要由前后柱，前后橫梁，縱梁和傾斜支撐組成。材質(zhì)為Q235，彈性模量E=2.0×1011pa，泊松比μ=0.3，密度ρ=7850kg/m3。柱的規(guī)格為H200*100，縱梁的規(guī)格分別為H300*150和H200*200，半H型鋼的規(guī)格為H200*100，傾斜支撐的規(guī)格為H50*50。本文選擇ANSYS軟件通過參數(shù)化方法建立鋼結(jié)構(gòu)有限元模型。在建立模型的過程中，梁、柱和傾斜支撐采用BEAM188單元，構(gòu)件的連接方式是剛性的[1]。車庫的相鄰停車位之間在X方向上的距離為2.5m，在Z方向上的距離為6.4m，第一層的高度為2.54m，從第二層到第四層的每層高度為1.7m。建造的模型有四層、六列，可提供21個停車位。車庫優(yōu)先使用D型汽車，汽車尺寸為5000mm×1850mm×1550mm，重量為1700kg，計算重量為2000kg。圖2立體車庫鋼結(jié)構(gòu)簡化三、車庫結(jié)構(gòu)的統(tǒng)計分析立體車庫的鋼結(jié)構(gòu)荷載分為恒荷載，變荷載，風荷載和地震荷載四類。恒定載荷由軸承架、拖車托盤、起重和運輸馬達以及可移動的拖車框架等組成，應用特定的力學公式計算出恒定載荷，然后將轉(zhuǎn)換后的載荷，分配給鋼結(jié)構(gòu)體的承重節(jié)點。變荷載包括車輛荷載，雪荷載以及人員和設備的重量等。在本文中，它僅考慮車荷載和雪荷載。對于轎廂負載，可以根據(jù)比率，通過掛車托盤上的四個掛鎖將其平均分配給承受鋼結(jié)構(gòu)負載的節(jié)點[2]。雪荷載和風荷載具有相似的轉(zhuǎn)換方法，但是雪荷載均勻地分布在車庫屋頂上的承受鋼結(jié)構(gòu)荷載節(jié)點上。在承載汽車的拖車托盤沿水平方向移動過程中，它將對鋼結(jié)構(gòu)產(chǎn)生影響。沖擊載荷可以通過質(zhì)量的1.25倍的方法計算得出，其中包括拖車托盤，活動拖車框架和轎廂的載荷，通常將其添加到承受第二層和第三層鋼結(jié)構(gòu)載荷的節(jié)點上。影響防風裝置的季風會產(chǎn)生風荷載。用線性轉(zhuǎn)換法計算風荷載并將其平均分配給鋼結(jié)構(gòu)[3]。地震會產(chǎn)生施加在車庫結(jié)構(gòu)上的地震荷載，因此，可以用轉(zhuǎn)換方法計算地震荷載，然后以加速度的形式添加到鋼結(jié)構(gòu)中[4]。根據(jù)載荷情況，模型的受力狀態(tài)可分為空載和滿載兩種。空載條件下的載荷計算主要由軸承架、拖車托盤、電動機、活動拖車架等恒定載荷組成，但車輛載荷除外。滿載條件下的載荷計算包括空載條件下的恒定載荷和拖車托盤上的停車場的載荷。3.1負載轉(zhuǎn)換拖車托盤的質(zhì)量為400kg，第二和第三層的起重電動機的質(zhì)量為60kg，第四層的起重電動機的質(zhì)量為70kg。橫向電機的質(zhì)量8kg?？梢苿油宪嚰艿馁|(zhì)量為1000kg。D型車為1700kg，計算負荷的質(zhì)量為2000kg。前軸的重量為7kN，后軸的重量為13kN。通過轉(zhuǎn)換處理可以得到空載和滿載兩種工況下的載荷數(shù)據(jù)[5]。根據(jù)《建筑結(jié)構(gòu)荷載設計手冊》[6]，可以確定雪荷載標準值的計算公式：S公式中，Sk為雪荷載的標準值，單位為千牛頓/平方米，μr為屋頂雪的分配系數(shù)，本文值為1.0，S0為基本雪壓，值為0.25千牛/米。在靜力學和動力學分析中，雪荷載的組合系數(shù)通常為0.7，最不利的雪荷載的組合系數(shù)為0.98，這會對鋼結(jié)構(gòu)產(chǎn)生不利影響。在地震分析過程中，變荷載的組合系數(shù)為0.5。根據(jù)以上數(shù)據(jù)，可以計算出車庫屋頂積雪產(chǎn)生的載荷，然后將轉(zhuǎn)換后的積雪載荷加到車庫屋頂承受鋼結(jié)構(gòu)載荷的節(jié)點上。3.2負載轉(zhuǎn)換選擇ANSYS軟件，通過參數(shù)化方法創(chuàng)建有限元模型，然后對該模型進行網(wǎng)格劃分，可獲得1108個單位和2080個節(jié)點。在靜力學模塊的條件下，它可以設置求解器控制選項，在柱的底部添加位移約束，并等效地將載荷添加到鋼結(jié)構(gòu)的節(jié)點[7]。為了得到鋼結(jié)構(gòu)的變形，找出鋼結(jié)構(gòu)的薄弱位置，確定鋼結(jié)構(gòu)是否滿足設計要求，在空載和滿載兩種工況下進行靜力分析。鋼結(jié)構(gòu)的靜電云圖如圖3和圖4所示。根據(jù)圖3，圖4和表1的數(shù)據(jù)，在空載和滿載的工作條件下，可以得出以下結(jié)論：Y方向的最大變形和鋼結(jié)構(gòu)的總矢量位移位于上方縱梁起支撐作用，縱梁的彎曲變形沿負Y方向發(fā)生。仿真結(jié)果表明，總矢量位移的最大變形位于縱梁在第四層和第五列的中間位置，變形值分別為1.594mm和2.381mm。根據(jù)設計要求，縱梁和橫梁的允許撓度值分別為12.8mm和15.2mm，變形值應不大于相應的允許撓度值。在滿載條件下，縱梁和橫梁的最大變形值均小于允許的撓度值，因此其剛度可以滿足設計要求。表1不同工況下鋼結(jié)構(gòu)的最大變形值圖3空荷載作用下鋼結(jié)構(gòu)位移變化云圖圖4全荷載作用下鋼結(jié)構(gòu)位移變化云圖<文獻翻譯二：原文>DesignofFiveParkingLiftingStereoGarageBasedonS7-200ChenHuiqin,ChenYulin.DesignofFiveParkingLiftingStereoGarageBasedonS7-200[A].ResearchInstituteofManagementScienceandIndustrialEngineering.Proceedingsof20172ndInternationalConferenceonEducation,Sports,ArtsandManagementEngineering(ICESAME2017)[C].ResearchInstituteofManagementScienceandIndustrialEngineering:計算機科學與電子技術(shù)國際學會(ComputerScienceandElectronicTechnologyInternationalSociety),2017:5.Abstract:Thestereogaragehasbecomeanimportantmeansanddevelopmenttrendstosolvetheproblemofcity’sparkingdifficulty.Inthispaper,ittakestwo-layerandfive-locationoflift-slidingstereogarageforexample,instroducingitssystemstructureandworkingprocess,focusingonitsComponent,SoftwareandhardwaredesignbaseonS7-200.Itimplementsautomaticaccessvehicle,operationmonitoringandfaultalarmforstereogarage.Keywords:lift-sliding;stereogarage;controlsystem;S7-200;design1IntroductionWiththeimprovementoflivingstandardandthedevelopmentofeconomy,automobileintothemostfamilies,becomethemostpeople'smeansoftransport,buttospeeduptheprocessofurbanization,therapiddevelopmentofrealestateindustry,makingurbanspacemoreandless,theparkingproblemhasbecomeoneoftheproblemsurgentlytobesolvedinthecity,thetraditionalplanetypeparkinghadgoneintoadeadend,intotheairtoparkingspaces,implementingstereoparkingissolutionfastparkingproblemtheonlywaytobigcities,variousthree-dimensionalgaragespringinguplikegetrapiddevelopment.Three-dimensionalgaragetypeliftingandtransferringverticalcirculationtype,horizontalcirculationtype,multicirculatingtypeetc..Indevelopedcountries,theapplicationofup-downandtranslationstereogaragehasahistoryofnearly30.Japan,Germanyandothercountrieshaveformedaseriesofmaturetechnologyofup-downandTranslationStereogarage.Theup-downandtranslationhassimplestructure,convenientoperation,accordingtothesafety,reliability,lowcost,etc.,inthedomesticmarketofthestereogarageoccupiesanabsoluteadvantage.Thedesignforthedouble5carliftslidinggarage,twolayersofthree-dimensionaldesign:onelayerandtwolayer.Thetwolayermobileonlyliftingboard,ahorizontalboardlayeronlytranslationalmotion.Theup-downandtranslationstereogaragesysteminatotalofsixparkingspaces,includingavacancywiththetemplatetheriseandfallofthechannel,theotherfivespaceswiththetemplatecanbeusedforstorageofvehicles.Alayerofparkingspacesforparkingortakingthecarsignals,donotneedtomovetheotherfivefloorsforparkingandtakingoutofthecar.Secondlayerofparkingspacesforparkingortakingthecar,shouldfirstdeterminethecorrespondinglayerifthepositionisempty,ifnotemptytoshifttoalayer,untilthebottomoftheemptytowerefallingactionreachalayer,andthentoparkingthecar,inandoutofthecarafterrisingbacktoitsoriginalposition.Thesystemstructureisshowninfigure1.Figure1.Systemstructurediagram2SolidGarageSystem2.1controlsectionControlsystemofliftingandtransferringgarageisthevehicleaccesscommandcenterisaprerequisiteforrealizingintelligent.Mainlyconsistsofthemaincircuitandcontrolcircuit.Themaincircuitcontrolloadtheriseandfallofthefloorsandshifting.Theequipmentismainlytraversingasmallmotorandaliftingmotor,inordertorealizethemotorrunningsmoothly,nonoise,lowenergyconsumption,highaccuracyandhighspeed,traverseasmallmotormainlyadoptsgearreducer,largeliftingmotormainlyadoptsspecialbeltbrakereducer,speedcontrolsystemusingACvariablefrequencyspeedregulation;controlcircuitismainlydesignedforthesafetyofthecar,thevariouscontrolloops.Thecontrolsystemisdividedintohardwarepartandsoftwarepart.Themainoperatingmodesofthecontrolsystemaredividedintotwotypes,automaticoperationmodeandmanualoperationmode.Referstotheso-calledautomaticoperationmode,whentheoperatorinputandoutofthegaragepasswordandparkingnumber,pressconfirmationkey,remotecontrolandoperationsystem,garagetrayliftingandtraversingactionwillautomatically,whenthesetofparkingspacesatgroundlevel,userscanwilldrivethecarcarryingboard,orfromthecarcarriesthetemplatetoremovethecar.Theautomaticmodeismainlyusedfornormalusers,theoperatorinputsignalremotecontroloperationofthegarage.Theso-calledmanual(orpoint)operationmodeoperationpersonneloperatedseparatelycontinuousorintermittentoperationofacertainaction,suchasacarliftalone,aloneshifting,theoperationmodeforgaragemanagementpersonneloroperationandmaintenancepersonneltouse.2.2ThepartofliftingandslidingtransmissionLiftingdriveisthemainpartofthegaragedrivesystem,whichisresponsibleforthemovementsofpalletandvehicle.Themotorandachaindrivedevicetemplatefromtheunderlyingspacesascendtotheupperparkingspaces,orthetemplatefromtheupperparkingfelltothebottomofparkingspacestoachievelifttruckaccess.Liftingdrivepartiscomposedofmotor,frequencyconverter,chainwheel,chainandsoon.Duringoperating,electricmotordrivesthechainwheels,thechainwheeldrivethechain.Thetraymoveupanddownthroughthecontrolofmotor’srotationdirection.Duringaccesstothevehicle,theliftingsystemistobeaccessedbythevehicletoadesignatedpositionbytheparkingtrayortodropthetraycarryingthevehiclefromthespecifiedposition.Transversetransmissionsystemisresponsibleforparkingtray’smovementonthebeam.Traversingtransmissionmechanismconsistsofmotor,inverter,drivingwheelandrail.Bottomtraversedrivesystemareintegratedwithvehicles,transversetransmissionsystemoftheotherlayersareplacedontheparkingframe.Driveshaftworkperformanceisgoodorbadwilldirectlyaffecttheworkingconditionofthewholegarage.Accordingtotheworkingprincipleofthelift-slidingstereogarage,carcarrier,exceptthetoplayerone,shouldmoveleftandrightthroughslidingrailineachlayer.Withthesemovement,theuppercarcarrierwillhaveenoughspace.2.3SteelstructureframeThesteelframestructureismainlycomposedofbeams,rails,rails,racksandtraycomponents.Themainfunctionofthisstructureisforbearing,anumberofparkingspaces,andtheinstallationofmechanicaltransmission,electricalcontrol,firecontrolsystems,drainageandotherrelatedequipment.Framestructureisthesupportingpartofthewholegarage.Themainframesystemisbuiltbytheconnectionofhorizontalbeamandverticalcolumn’ssteelnodes.3Designofliftingandtransferringparkingcontrolmodule3.1SelectionofcontrolhardwareControlsystemisanimportantequipmentofthree-dimensionalgarage,whichdirectlyaffectstheworkingefficiencyofthegarage.Thecontrolsystemshouldhavethefeaturesofreliability,easyoperation,importandexportautomatically.Thecontrolsystemmainlyconsistsofthehost,contactor,circuitbreaker,travelswitch,limitswitch,photoelectricswitchandsoon.Besides,asanindustrialautomationcontroller,PLChashighreliability,stronganti-interferenceability,smallvolume,goodversatility,convenientuse.Therefore,thisstudyselectsS7-200CPU226PLCasthecoreofthecontrolsystemmanagesandmonitorgarage.3.2CompositionofcontrolsystemThecontrolsystemmainlyconsistsofhardwaresystemandsoftwaresystem,anditsstructureisshowninFigure2.Themaincontrolobjectofthecontrolsystemistotraverseasmallmotorandliftalargemotor.Thesemotorswilloperatethroughpressofcontrolbuttonbasedonthecustoms’purposes.Changeofthepowerphasewillachievethecarcarriers’movement.Besides,theothercontrolobjectisavarietyofauxiliarydevices,suchasdetectiondeviceanditsvarioussecurityfacilities,etc.Figure2.SystemarchitecturediagramProcessduringupanddownmotionisthemostpronetoproblems.Thereforeliftsystemwithinverterdrivestheliftingmotor.Whiledecelerationdevicewillcontroltheliftingspeed.Travelswitchpositioningistakeninordertoensurethecarcarrierdroppingatthespecifiedlocation.Thephotoelectricswitchisusedtodeterminewhetherthereisavehicleonthecarcarrier.Besides,anti-fallingsystemwithanti-fallingelectromagnetisusedinthesecondfloorparkingspacetopreventcardrop.Safetyhooksystemwillbeopenedwithpowerandlockedwithoutpower.Then,itcanpreventparkingspacedroppedbecauseofwirefractureatpower-offcondition..Detectionsignalsendingbythedetectiondeviceistoensuretheprecisepositioningoftheparkingspacesandsecurity.Requiredtestingdevicesconcludeparkingspacesleftinplace,rightinplace,ontheupperlimit,undertheplace,thesafetyhookopenandotherdetectiondevices.Thecontrolprincipleisshowninfigure3.Figure3.Principlecontroldiagram3.3DesignofcontrolprogramFigure4.SoftwareflowchartPLCcontrolsystemismainlyaimedtocompletetheoperationofstorageandtakingvehiclesautomatically.Thecontrolprogramisdesignedwithmodularstructure,whichiscomposedofinitializationprogram,maincontrolprogramandfaultalarmprogram.Initializationprogramismainlytoscantheportandthestate,thentransfertothecorrespondingprogramaccordingtotheresultsofthetests.Inaccesstovehicles,ifdriverchooseparkingspaceinlayeronethedrivercandirectlydrivethecarintotheparkingspaceoroutofthecarcarrier.Whileifdriverchoosethelayertwo,PLCcontrolprogramcandeterminetheparkingspaceinlayeronejustbelowthechosenonewhetherisfree.Thenthecarcarrierwilldropwhenitisfree.Otherwise,thecarcarrierwillbemovedandfreethespacefirstly.Oncecompletethecarstorageorcartaking,systemwillresetautomaticallyandwaitforthenextoperationinstructions.Whenthevehicleistoolongoroverweight,ortherearesomeothersecurityrisks,thefaultalarmprogramwillbesenttothesoundandlightsignalalarm,whilethesystemwillstopallactions,clearallports