英文原文TheverticalBoom-typeRoadheaderdesign1IntroductionMechanicaldesignisintheprocessofproductdesignandanimportantpartofthemainlinks,itisfollowedinprogrammedesignafterthedesignwork.TheverticalBoom-typeroadheader(theroadheader)totheoveralldesignofthemeritsofcompletemachineplayadecisiverole,andthedecisionoftheassembly,thesystem,coordinationbetweenthevariouscomponentsoftheunityandmatch,toobtainthehigh-endperformanceandoverallbettereconomicefficiencytechnology.Roadheaderdesign,includingthefollowing:1)Accordingtodesignprojectdescriptionchoicetypeandvariouscellularconstructionpattern2)Decidesthecompletemachinethemaintechnicalperformanceparameter,Includingsizeparameter,heavyparameter,theparameterofmovementandthetechnicaleconomyreferparameter,3)Accordingtosystemdesignperformancerequirement,definitecompletemachinesystemcompositionandbetweenthemmatchaswellaseachpartmaintechnicalsenateparameter,4)Thenecessarywhole,andthemappingoftransmission,hydraulic,electroniccontrolsystems,andotherplans.2theselectedmodelsandvariouscomponentsandstructuraltype,drive,andtheoveralllayoutofthereasonableIndeterminingthecontent,firsttaskshouldbedesignedtomeetthecontents,especiallytheusersofthemaindemandsoftheinvestigation,thetwosidesexchangedviewsrepeatedly,tosatisfybothusers(orsuperior)conditions,canbettermeettheproductdevelopmentoftheoverallplan.2.1theselectedmodelsAccordingtoroadheaderuse,forthecoalminetunnelboringorusedforothersectorsoftheworks,roadheaderworkingconditionsforcuttingcoalroadwayorsemi-CoalLane,thecompressivestrengthofcoalandrockone-way(orthevalueofplattscoefficientf)andtherockabrasionfactor.AtthesametimethecontrollineshouldbesuperscriptMT1381995cantileveredRoadheadertypesandparameters,accordingtocuttingcoalandrockthebiggestone-waycompressivestrength,thetypeofselectedmodels.2.2thestructureofthevariouscomponents,thewaythedriveridentifiedRoadheaderbycuttinggeneralagencies,shippingagencies,walking,hydraulicsystem,electroniccontrolsystemsandauxiliarydevices(suchasdustremovaldevices,securitydevices,remotemonitoringdevices)andothercomponents.1)Cuttingagencies.CuttingthedrivefromACmotor-driven,inthetransmissionsystemlocatedinthegeneralprofilecouplingwithnomechanicaloverloadprotectiondevice,thetwoplanetsreducerdrivenspindlefrontofthecuttinghead.Somesectionsoftheworkingbodiesboringmachinehascutchain,disc-millingandcutting-suchascantilever.Cantileverduetothecutting-boringmachinebodyflexible,relativelysmall,cancutavarietyofshapesandsectionsoftheroadway,andtoachieveselectivecutting,butcuttinggoodeffect,ahigherrateofboring,sonowusedmainlycantileverCutting-andhasbecomeboringmachineworkingbodyofabasicpattern.Bycuttingheadofthelayout,isdividedintohorizontalandverticalaxisofthetwo.Theline-cuttingheadoftheadvantagesare:Transmissionconvenient,compactandcanbecuttoanyshapeoftheprofile,easyaccesstotheformationofacross-sectionandisconducivetoexpansionintheuseofcantilever,orditchdigging,inWaterloo.Cuttingheadtheshapeofacylindrical,coneandtheconeandcylindrical,asthelattertwocuttingheadtodrilling,andthecuttingsurfacethantheformation,useitmore.Thisistheworkoftheshortcomings:Asthelongitudinalaxisofcuttingheadinthehorizontalswingatthecuttingreactionforceisnotpassedmachinecentres,withcantileveredformoftorquetoboringmachinehaveagreatervibration,stabilityispoor.Therefore,thecoalroadwayexcavation,theneedtoincreasethebodyweightorsupporttheinstallationofauxiliaryequipment.Atpresent,suchaboringmachineinsomesectionsoftheuseofmoreboringmachine.2)Shipmentofbodies.Itgenerallyfromthemiddleloadingandconveyorcomponents.Theyweredrivenorfocusmaybelinked,eitherbyACmotordrive,canalsobeusedhydraulicmotordrive.Trailingclaw-istouseaturnmovestherakeclawstocontinuetorakematerialsandinareprintfromtransportoperators.Thisstructureissimple,reliable,smallformfactor,loadinggoodeffect,theapplicationiswidespread.However,suchinstitutionsloadingwidthrestricted(becauseboringmachinerunningtrackwhenagenciesgenerallydonotarouse).Toexpandtheloadingwidth,willshoveltheentireharrowboard,togetherwiththeclawagenciesinthelevelofswing,ordesigndualrakeclaws,toexpandthescopeofloading.Institutionsthantherake-wheel-clawsimple,highintensity,reliable,butwithlessbulkmaterials.Loadingagencyprogrammeisnotonlytheinstallationoftheclaw-rake-wheelcanalsobeinstalled,thetwocanbeusedinterchangeably.Usually,thechoicerakeclaw-loaded,butconsideringloadingwidthoftheproblem,maychoosetodoublerakeclaws,canalsobedesignedtorakeclaw-roundinterchangeablewiththeloadingmechanism.Somesectionsboringmachineuseofscraperchainconveyoragencies.Transportationagenciesaregenerallyundertakenbythetailtothenosetiltedupwarddirectionofthelayout.Transportationagenciescanbethedriver,isabouttomotororhydraulicmotorandreducerlayoutinthescraperconveyorandaroundthesideofthefuselage,thebodyinthedriverloadingatthesametime,indirectly,totransportbodiestotaketheinitiativetothetailshaftdrivenscraperTransportationagencies.Thisdrivesystemcomponentsinsmall,relativelysimplebodies,butloadingandtransportationagenciesinvolvedinthetwocampaigns,mutualinfluence.Asthelocationlessspacelayoutmoredifficult.Transmissionorganizationstoadoptanindependentdriver,isabouttomotororhydraulicmotorlayoutawayfromthemachineside,drivenbyslowdeliveryagencies.Thismodeoftransmissiondrivelayoutsimple,andfillingthecampaignHubuyingxiang.However,duetotransmissionandmoredynamiccomponents,thepointoffailurehasincreased.Atpresent,thetwotransportationagenciesareused,asappropriate,thedesignshouldbeidentified.Generalloadingandinstitutionsoftenusethesamedrive.Loadingagenciescanusemotor-driven,canalsobeusedhydraulicmotordrive.However,inconsiderationoftheworkingenvironmentandwetwithmud,optionalhydraulicmotordriveforgood.3)Runinstitutions.Walkingagenciestrackedthegeneralpattern,crawler-runinstitutionsapplytothefloorisunevenorsoftconditions,noroadtracklaying.Tractionwithlargecapacity,goodmobility,reliability,flexibilityandmobilityontheflooradaptabilityoftheadvantagesofgood.Butitscomplexstructure,componentsandwearmoreserious.Atpresentcross-sectionoftheboringmachineisusuallyusedcrawler-runinstitutions.Walkingagenciestrackedthegeneralpattern,thetwotrackedseparatelybytherespectivepowertodrive,toachieveinsitu.Caterpillaristhedrivingforceoftwomotorsandhydraulicmotors,motordriverisgenerallysetupawalkingspeed,hydraulicmotor-drivenlargelow-speedtorquemotorcanbedrivendirectlytrackedsprocket,orusedinthehydraulicmotorspeedReducerledthedrivesprockettrack,itcanachievePromisegovernor.Trackedstructureofaslidingandrollingtwo,whenthespeedmachinetomobilize10m/mininthelightRoadheader,shouldadoptthestructureofslidingwhenthemobilizationofspeedmachines10m/minofheavy,severeRoadheadershouldbeusedRollingstructuraltype.4)Thehydraulicsystem.Hydraulicsystemsuseofopen-wayvalvesystemmorecentralizedcontrol(directorremotecontrolmanipulation)way.Domesticandforeignuseofthepast,gearpumps,hydraulicsysteminrecentyearsRoadheaderusedpistonpumphaveincreasedthetrend.5)Electroniccontrolsystem.Electroniccontrolsystems,includingsomepower,controlandinspectionofthepart.Electroniccontrolsystemmustbeinaccordancewiththerequirementsofcoalmineexplosion-proofdesign,manufacture,testing,GB3836-2000mustmeetthestandardsoftherelevantprovisionsandrequirements.InordertoimproveoperationsattheRoadheaderinthesecurity,operationalflexibilityandmechanicaltransmissionpartofthefaultdiagnosisandmonitoringfunctions,fromthepracticalpointofview,theinstallationofthenecessarymachinesfromaremotecontroldevice,monitoringpressure,temperature,levelandkeypartsthefaultdiagnosisdevice.2.3LayoutGenerallayoutofthecontentsincludethefollowing:1)Identifythecomponentsincompletemachinesaidthelocation,shapeandsizeoftherequest；2)Toidentifytheparts,componentsandtheconnectionsbetweencompletemachine；3)estimatescompletemachineweightandtheweightofallcomponentsrequested；4)layoutofthemanipulationofinstitutions,thedriversseat；5)examinationofmovingpartsofthemovementspace,ruleoutthepossibilityofinterferenceinthecampaign.2.4specificrequirementsBoringmachineinthegenerallayout,theneedtopayattentiontothefollowingquestions:1)institutionsintothereducerreducer,asfaraspossibletocoaxaxis；2)cantileverandspade-suitedtothesizeofrelations,notonlyconducivetoloading,toavoidcuttingthefirstshovelcuttingboard；3)thelevelofcantileverandverticalpositioncanswingthecentercoincidence,cannotoverlap.Fromtheincreasedstabilityofthemachine,thesearehighlyswingshouldbereduced.Inthecantileverisnotguaranteedtointerferewithotheragenciesundertheconditionsofswingcentresarelocatedshouldtrytorelyon,butmustensurethatthemachinesinthecentreplaneofverticalsymmetry；4)Whenallthemajorcomponentsdesignedafter.Checkingshouldbecarriedout,doesnotmeetrequirementstobeadjustedjustsothatthefocusintrackandlessthantheformercenterShaopianL/6(Lgroundingforthetracklength).Inaddition,thecenterofgravitypositioninthedemandforcuttingbodiesturretafterthecenterline,andYuediyuehaohighcenterofgravitytoenhancestabilitywhenoperatingmachinery.5)theoveralllayoutshouldconsidertheweightofsymmetricalleftandrightandtakecareofworkhabitsandtofacilitatetheoperation.Generaldriverintheleftsideofthefuselageandthefuselageintherear,driverseatheightshouldensurethatthepeoplesattention,whatgoodcontroloftheirmachines,cuttingouttherulesoftheroadway；6)CaozongTaipositionshouldbeappropriate,shouldensurethatdriverseasymanipulation,andeffort.Instrumentsshowedthatthelocationdevicesfordriverstoobserve,notscatterednormaloperationofthedriversattention.2.5typesandpowertransmissioncomponentschoicetransmissionpatternsandcomponentsshouldfollowtheprincipleofchoice1)theadvancednatureoftechnology:machinestoimproveperformance,increaseproductivity；2)economicrationality:drivesystemassimpleaspossible,fewercomponentsandeasyprocessing,lowprice,easymaintenance,longlife；3)reliabilityofthework:thetransmissionsystemreliabilityperformanceforthelifeofcomponents,aswellascomponentqualityrequirements；4)adaptation:thedrivesystemcomponentsshouldbeadaptedtoload,workingconditionsandenvironmentalconditionsoftherequest.Agenciestothetransmissionsystemrequirementsandthechoiceoftransmissionpatterns.Boringmachinecutting,loading,transport,walkingandotherinstitutionsgenerallyarerespectivelytransmission,allpartsofthestateandsubjecttodifferentworkingconditions,thusdrivingpatternshavedifferentrequirements.1)institutionsrequireagreatershort-termGuozainengli,motoroilisverysensitivetotheimpactload,theloadingcapacityoflow-impactcuttingheadfornormalfunctioning.Therefore,theboringmachineworkingbodyshouldadoptthemotor-drivenmechanicaltransmissiontype.Shouldmakeuseofsmallsize,power,astrongcapacityforelectricmotors,andequippedwithreliableelectricalprotectiondevice.Accordingtothecompactbodyofworkfeatures,usuallyworkinthereducercantilever,anintegralpartofacantilever.Cuttingthefirstgovernorgeneralwaywitharoundpegforthemethodoftransmissionorganizationstosimple.2)rakewithinstitutionstransmissiondeviceischaracterizedby:reducerbeinstalledinthelimitedsizeofthelowerpartoftheshovelplate,thusdesignasmallerspace,poorworkingconditions.Reduceroftensoakedinmuddycoalandrockinthecardswhenthematerialeasytooverload.Trailingequipment,transportationagenciestheuseofmechanicaltransmission,forthelargermotor,nottheendoftheconveyorinstallation,theshovelisgenerallyinstalledonbothsidesoftheboardtwomotor,witharake,acommonpowertransmissionorganizations,suchboundtomaketheSlowdownmethesizeoftheincreaseinthespadeundertheboardlayoutmoretense.Inaddition,considertheclawandrakeboardslinkedlinkedoverloadsituation,toprotectthemotordidnotburn,thegeneralneedsofinternalsecurityinreducerfriction-clutch.Trailingequipment,transportationagenciestheuseofmotoroiltransmissiongear,assmallsize,lightweight,willenablethetwoseparatedrive,thussimplifyingtransmissiondevice,forthespadeundertheboardlayout,designedforgoodresultssealedmechanicalsealorreducerAndshovelplateseparation,whileachievingautomaticoverloadprotection.3)walkthetrack-drivenapproachandamotor-drivenmotoroilintwoways.Respectively,throughmechanicaldevicesordirectlyfromtheslowdowninmotoroilledtheinitiativesprocketrunningtrack.Mechanicaltransmissionofthewalkingtrack,withGeneralMotorswillbetrackedintworeducerrear,thebrakehydraulicbrakingbymechanicalmeansway.Thistransmissionmodedrivehighreliabilityandlowpricesofmotor,easymaintenance,butnotspeed,slowmelarger,LinShuimajorroadway,themotoreasilyexposedtomoistureandburned.Trackedwalktoadopthydraulictransmissionpatterns,simplesystem,betterperformanceandad