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1、机车车辆问答题（Thelocomotivevehicleq&a）Iii.Q&a:Whatarethefivemostcommonvehicles?Answer:thegeneralvehicleconsistsofthefollowingfiveparts:(1)thewalkingdevice(1),andthe"walkpart"or"bogie"isalsocorrect);(2)carbody(1point,thebodyandchassisarealsocorrect);(3)carhookbufferdevice;(1po
2、int)(4)brakingdevice;(1point)(5)vehicleequipment.(1)2.Whatisthemotorvehiclelimit?Howdoesthevehiclequalify?Answer:thelimitboundaryofthelocomotivevehicleisalineperpendiculartothecenterlineoftheline(3points,"perpendiculartothecenterline","extremecrosssection"and"contour"ea
3、ch).Whetherthecarisemptyorheavy,(0.5point)stopsatthehorizontalline,(0.5points)nolateraltiltanddeviation,(0.5points),anypartofitshouldbecontainedwithinthelimitsoftheboundary,notbeyond.(0.5)Answer:othervehicleslimitisthelimit(1)vehiclescross-sectionalmaximumpermissiblesiz
4、e(1)theoutlineofthefigure(1)(orvehiclescrosssection(1)themaximumallowablesizeof(1)theoutlineofthegraphics),(1)eitheremptyorheavycar,stop(0.5)onthestraightandlevel,(0.5)thelongitudinalcenterlineandthecenterlineofthelineislocatedinthesameverticalplane,(0.5)thatprotrudesfr
5、omthecarandsuspensionpartsshouldbeholdwithinlimitscontour.(0.5)3.Whatistheroleoftheaxleboxoilrundevice?Answer:themainfunctionoftheoilrundeviceoftheaxleboxis:(1)toconnectthewheelpairtothesideframe(ortheframe)toformabogie;(1)(2)theverticalandhorizontalloadofthevehicleispa
6、ssedtotherailthroughthewheel;(1)(3)lubricateshaftneck,reducerunningresistanceandpreventcombustionshaft;(1point)(4)limitwheeltolargehorizontalandverticalmovement;(1point)(5)preventrain,dustandotherintrusionsandseal.(1)4.Whatarethefunctionsofthespringandvibrationdampingde
7、viceofthebogie?A:whenthevehicleisinoperation,duetotheunevencircuitandthevehicleitself,itisinevitablethatthevibrationandimpactofvariousperiodicornon-periodicwillbecaused.(1)springdampingdeviceisusedtomitigateandreducethevibrationandimpact,improvetherunningsmoothnessof(2p
8、oints),andensurethepassengercomfortandthegoodsintact,(1)prolongingthelifeofthevehiclecomponentsandcircuitcompo
