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Z552/51222i;Z/,~~~~~~~~~~~:,,,,,,,,,,,,,1,2}}}}}}}}}}}}}}}}}}}}}}}rrr,;;;;;;;;;;;;;;;;;;;}}}--,21.2.3.4.5.6.7.8.11.2.3.4.5.6.7.8.9.221Ll,;LZ1.2.1GB85327(15034505),,1999(10)1(((km/h)))(kg)))(m)))(m)))32223200000F,/65+(FZ/124)(G/32000)))FZ/39+(FZ/130)(G/32000)))3200000VZ/4444VZ/300032223200000FZ/68FZ/124)(G/000)+0.1(F)))FZ/39+(FZ/130)(G/000).1(32F)))3200000FZ/44.1(32V)))FZ/30.1(32V)))*,(Km/h)G(kg)()11.2.2,25%(14.0)1.2.3;,%(8.5),18%(10.2),1=Ggsin14r(Nm)g(m/52)º2Ggsinlo.2r(Nm)»3=(G+)gsins.5r(Nm)W(kg)2.12.2,22.1,l:M,1=Ga,r*(Nm)a,;/25.92(s,,/3.6)(m/s)G(kg)al-(m/52)r(m)-1+4J;+,,,)/(::G)(kgm)~(kgmZ),J1.1Vo(km/h)V20km/hS01VV(m)tlwe(s),tl0.22.2¹M*max{1,Mmax{1,};2.3¹=Ggr(Nm)=0.6ºMP=Ggfr10.2/(laif)(Nm)f---»=(G+W)gf.r058.5/(laifXNm),122.42.12.22.3,:min{M*,}:MPmin{MP,MPol},aS:,1999(10)23a=/(Gr=(0.320.37)g(m/52)s:/(25.92a)+,,/3.6(m),aSe:aMP/(GJ0.259(m/sz)s:/(25.92a)+,/3.6(m)SS133,(N)0.IFre~es(m),:r=Rl(l:)2/16(1)]l2)/2Rl/RZ4VIVl=(L)Ap(mZ)(mm)(0505)(mm)5-31.2.3.4.5.6.7.8.,4F.(d--1)JreMnjn-een1(N)FpAJeeFsp(MPa)JJ(MPa)AJ-(mZ)AJ3.,4(R:R)RlRZ-(m),5.1:=FZ/25.92(J)ElE()0.51234EEEEEEEEE{}}}}}}}}}...............:::-J7,,41.2.3.4.5.5.224,1999(10)=El/(Clml+C2m2)=GFZ/[25.92(C,ml2m2)][At]CICZ-()J/(kgK)mlmZ~.()(kg)](K)[At],,,18,200,,,4(1999527)()20001966,:;200016CN341055/TD,26139,,64,6.00,1272.00,:::243004:7815:2072490046153:(0555)2475118221222142481894,,GBJBJB/ZQJB/TQ/ZBYZBGY,.:t.,,:158():05156262999:8888:224700::01395116821BP:05151296929708::261020248044329:::710025/:0293313463:1918412881,1999(10)25ConstructionMaehineryVol.30No.andEquiPment10AbstraetsinEnshExperi.entalResearchinthe011FilmMeaniOfSliPShoePainHydraulicMotorsThemovingPair(referredtoassliPshoePair)betweenlinkagebushingandeeeeniriewheel15aeritiealfrietionPairoferanklinkagehydrauliemotor.Inordertoovercomeproblemsofburntshoel/andoffsetfrietioandtoincreaseefficiency,thedesignandoPeratingPrinciPleofexPerimentalsystemforsliPshoe011filmmechasmindraulicmotorsareintrodueedindetailintheartiele.ThetiltingeharacteristiesofsliPshoePair15analyzedthroughexPerimentalresearch.Keyword,HydraulictorSlipshoepairExPerimentalresearchAIyststothePrineipleofDualLongltudi15ddlingBalaceBeamonAsphaltPaverThedatumreferenceconditionsofautomatielevelingonPaversarestudiedintheartiele.TheadvantagesandshortcomingsofdifferenttypeofbalancebeamsarecomPared.TheinciPleofstraddlingbalancebeam15analyzedindetail.APPlicationtrendsarePoiniedoutaccordingtothesituationofdomesticroadconstruetfon.Keywords:AutomatieleveliogofpaverStraddlinglanceamRoadflatoessFiniteElemeAnalysisofWorkingEquipmeandDeeisionofCrossBmonLoadThepositfonoferossbeamonworkingequiPment15movedwithinpossibleareaaecordillgtotheaetualworkingeharacteristicsofloaders.Boomfiniteelementanalysisiscarriedoutandtheinfluenceofcrossbeampositiononboomstrengthandstiflness15studied.50therationalpositionoferossbeam15determinedtoensurethehigheststrengthandstiflnessofboomandthemostrationaldesignofboomstrueture.ywordgLoaderPositionoferossbeamFiniteelementmoreusedinthedesignofbrakesystemonwheeltypefoadersbeeauseofitsadvantages,suchaslightoPerationforee,shortenergyaccumulatingtime,nowaterfreezeandcorrosion,comPaetstrueture,maintenaneeandadjustmentfree,highreliabilityandeteThemethodandProeedurestodesignandealeulatethebrakeareintrodueedinthisartiele.Keywords:WheeltyPeloaderWet--tyPeFulldisktyPeBrakeANoneircularGearHydraulicM0torThenoncireulargearintroducedintheartiele15thedrivingPartofanewkindoflowPeedandhightorquehydrauliemotor.ThislowPeedandhightorquehydrauliemotorwithgoodPerformancefeaturessimPlestructure,highworkingPressure,highdisPlaeement,lownoiseandlowsensitivitytocontaminatfon.TheParameterdeterminationofgearPiteheurve,Problemsinmaehiningandtbeirremedies,aswellasexamPletest,arecomPrehensivelyPresented.Keywords:NoneireulargearPiheurveMaehiningTestAPrimaryDiscussiononSkidSteerLoadersThemarketdemandonskidsteerloaders15graduallyincreasillgbecauseoftheeconomydeveloPment.ThedeveloPmenthomeandabroad,mainsPeeifications,mainaPPlieationanddesignfeaturesofskidsteerloadersarediseussedintheartiele.KeywordsSkidtyPeLoaderFullhydraulieFeatUreDevelopmentDesignandCaleulationofWetyPeFullDiskBrakeFullhydrauliedisktypebrakesystemwillbemoreandAPPlicationofMagnesiumChrysoUteinWetMoldCastingIt15normallyeonsideredthatPreeisecastillgsmustbeProdueedbyinvestmentmoldingPattern.Theexperienceintrodueedinthisarticle15toProdueemiddleandsmallsizepleisealloyteeleastillgsunder1tonswithwetmoldusingYiehangmagnesiumehrysolitesandandGuilinNo.lPatentedadhesive.TheadvantagesofthisProcessarehighlyfinishedquality,easeinsandcleaning,nopollutiosandreeyelingandlowProduettoncost.KeywordMoldingmaterislMagnesiumeysolitesaWetmocasting,1999(10)