1、附录ATheverticalBoom-typeRoadheaderdesign1IntroductionMechanicaldesignisintheprocessofproductdesignandanimportantpartofthemainlinks,itisfollowedinprogrammedesignafterthedesignwork.TheverticalBoom-typeroadheader(theroadheader)totheoveralldesignofthemeritsofcompletemachineplayadecisiverole,andthedecisio
2、noftheassembly,thesystem,coordinationbetweenthevariouscomponentsoftheunityandmatch,toobtainthehigh-endperformanceandoverallbettereconomicefficiencytechnology.Roadheaderdesign,includingthefollowing:1)Accordingtodesignprojectdescriptionchoicetypeandvariouscellularconstructionpattern2)Decidesthecomplet
3、emachinethemaintechnicalperformanceparameter,Includingsizeparameter,heavyparameter,theparameterofmovementandthetechnicaleconomyreferparameter,3)Accordingtosystemdesignperformancerequirement,definitecompletemachinesystemcompositionandbetweenthemmatchaswellaseachpartmaintechnicalsenateparameter,4)Then
4、ecessarywhole,andthemappingoftransmission,hydraulic,electroniccontrolsystems,andotherplans.2theselectedmodelsandvariouscomponentsandstructuraltype,drive,andtheoveralllayoutofthereasonableIndeterminingthecontent,firsttaskshouldbedesignedtomeetthecontents,especiallytheusersofthemaindemandsoftheinvesti
5、gation,thetwosidesexchangedviewsrepeatedly,tosatisfybothusers(orsuperior)conditions,canbettermeettheproductdevelopmentoftheoverallplan.2.1theselectedmodelsAccordingtoroadheaderuse,forthecoalminetunnelboringorusedforothersectorsoftheworks,roadheaderworkingconditionsforcuttingcoalroadwayorsemi-CoalLan
6、e,thecompressivestrengthofcoalandrockone-way(orthevalueofplattscoefficientf)andtherockabrasionfactor.AtthesametimethecontrollineshouldbesuperscriptMT1381995cantileveredRoadheadertypesandparameters,accordingtocuttingcoalandrockthebiggestone-waycompressivestrength,thetypeofselectedmodels.2.2thestructu
7、reofthevariouscomponents,thewaythedriveridentifiedRoadheaderbycuttinggeneralagencies,shippingagencies,walking,hydraulicsystem,electroniccontrolsystemsandauxiliarydevices(suchasdustremovaldevices,securitydevices,remotemonitoringdevices)andothercomponents.1)Cuttingagencies.CuttingthedrivefromACmotor-d
8、riven,inthetransmissionsystemlocatedinthegeneralprofilecouplingwithnomechanicaloverloadprotectiondevice,thetwoplanetsreducerdrivenspindlefrontofthecuttinghead.Somesectionsoftheworkingbodiesboringmachinehascutchain,disc-millingandcutting-suchascantilever.Cantileverduetothecutting-boringmachinebodyfle
9、xible,relativelysmall,cancutavarietyofshapesandsectionsoftheroadway,andtoachieveselectivecutting,butcuttinggoodeffect,ahigherrateofboring,sonowusedmainlycantileverCutting-andhasbecomeboringmachineworkingbodyofabasicpattern.Bycuttingheadofthelayout,isdividedintohorizontalandverticalaxisofthetwo.Theli
10、ne-cuttingheadoftheadvantagesare:Transmissionconvenient,compactandcanbecuttoanyshapeoftheprofile,easyaccesstotheformationofacross-sectionandisconducivetoexpansionintheuseofcantilever,orditchdigging,inWaterloo.Cuttingheadtheshapeofacylindrical,coneandtheconeandcylindrical,asthelattertwocuttingheadtod
11、rilling,andthecuttingsurfacethantheformation,useitmore.Thisistheworkoftheshortcomings:Asthelongitudinalaxisofcuttingheadinthehorizontalswingatthecuttingreactionforceisnotpassedmachinecentres,withcantileveredformoftorquetoboringmachinehaveagreatervibration,stabilityispoor.Therefore,thecoalroadwayexca
12、vation,theneedtoincreasethebodyweightorsupporttheinstallationofauxiliaryequipment.Atpresent,suchaboringmachineinsomesectionsoftheuseofmoreboringmachine.2)Shipmentofbodies.Itgenerallyfromthemiddleloadingandconveyorcomponents.Theyweredrivenorfocusmaybelinked,eitherbyACmotordrive,canalsobeusedhydraulic
13、motordrive.Trailingclaw-istouseaturnmovestherakeclawstocontinuetorakematerialsandinareprintfromtransportoperatorsThisstructureissimple,reliable,smallformfactor,loadinggoodeffect,theapplicationiswidespread.However,suchinstitutionsloadingwidthrestricted(becauseboringmachinerunningtrackwhenagenciesgenerallydonotarouse).Toexpandtheloadingwidth,willshoveltheentireharrowboard,togetherwiththeclawagenciesinthelevelofswing,ordesigndualrakeclaws,toexpandthescopeofloading.Institutionsthantherake-wheel-clawsimple,highintensity,reliable,butwithlessbulkmaterials.Loadingagencyprogrammeis
