crane notes 塔吊知识

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时间:2017-11-10

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1、CranesCranesMobileCranesMechanicalorhydraulictypesMechanicalalsoreferredtoas“conventional”craneMechanicalcraneshavegreatercapacityHydrauliccraneshavegreatermobilityandrequirelesssetuptimeCranesMobileCranesLatticeboomortelescopicboomCranecapacityiscontrolledbyitsoperatingra

2、diusOperatingradiusis:horizontaldistancefromcenterofrotationtothehookafunctionofboomlengthandboomanglewiththehorizontalCranesMobileCranesOtherfactorsthatinfluencecapacity:positionofboomwithrespecttothecarrieri.e.:overthefrontvs.overtherearorsidesamountandconfigurationofthe

3、counterweightconditionofthesupportingsurfacetirecapacity(stationaryandpick&carry)CranesLiftingDataCranemanufacturersprovideliftingdatathatincludes:RangediagramLoadratingchartsPCSARatingClassMiscellaneousnotesanddimensionsCranesLiftingDataPCSARatingNumberfirstnumberindicate

4、stheoperatingradiusfornominalcapacitysecondnumberindicatestheratedload(inhundredsofpounds)ata40’operatingradiususinga50’boomallloadsaretakeninthedirectionofleaststabilitywithoutriggerssetgoodwaytocompareappleswithapplesCranesLiftingDataLoadRatingChartsliftingcapacitiesbase

5、don85%oftippingloadonoutriggersliftingcapacitiesbasedon75%oftippingloadontiresandcrawlershookblocks,slings,spreaders,andotherliftingdevicesarepartoftheloadincludeaspartofthemaximumsafeloadordeducttheirweighttodeterminenetloadcapacityTowerCranesHeavyliftingfortallbuildin

6、gsMax.unsupportedheighttypically265’(80m)Muchgreaterheightswhensupportedbybuilding’sframeworkTowerCranesMax.reach230’(70m)Max.lift19.8Tons(18t)Counterweight=20TonsMaximumload-moment=300tonne-meterex.:30m(100’)radiusyieldsa10tliftingcapacityLimitswitchesformax.load&load-mom

7、entTowerCranesMastanchor-boltedto30’x30’x4’padConcretepadweighsover500,000#’sMastsectionsaretypically20’x10’squareTowerCranesSlewingunitmountsattopofmast(tower)Cat-head,jib,trolley,machineryarm,ties,&operator’scabMachineryarmcontainsmotors,electronics,cabledrum,andcounterw

8、eightTowerCranesUtilityConstructionUndergroundvs.aerialPublic&privateTransmission,distrib

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《crane notes 塔吊知识》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库

1、CranesCranesMobileCranesMechanicalorhydraulictypesMechanicalalsoreferredtoas“conventional”craneMechanicalcraneshavegreatercapacityHydrauliccraneshavegreatermobilityandrequirelesssetuptimeCranesMobileCranesLatticeboomortelescopicboomCranecapacityiscontrolledbyitsoperatingra

2、diusOperatingradiusis:horizontaldistancefromcenterofrotationtothehookafunctionofboomlengthandboomanglewiththehorizontalCranesMobileCranesOtherfactorsthatinfluencecapacity:positionofboomwithrespecttothecarrieri.e.:overthefrontvs.overtherearorsidesamountandconfigurationofthe

3、counterweightconditionofthesupportingsurfacetirecapacity(stationaryandpick&carry)CranesLiftingDataCranemanufacturersprovideliftingdatathatincludes:RangediagramLoadratingchartsPCSARatingClassMiscellaneousnotesanddimensionsCranesLiftingDataPCSARatingNumberfirstnumberindicate

4、stheoperatingradiusfornominalcapacitysecondnumberindicatestheratedload(inhundredsofpounds)ata40’operatingradiususinga50’boomallloadsaretakeninthedirectionofleaststabilitywithoutriggerssetgoodwaytocompareappleswithapplesCranesLiftingDataLoadRatingChartsliftingcapacitiesbase

5、don85%oftippingloadonoutriggersliftingcapacitiesbasedon75%oftippingloadontiresandcrawlershookblocks,slings,spreaders,andotherliftingdevicesarepartoftheloadincludeaspartofthemaximumsafeloadordeducttheirweighttodeterminenetloadcapacityTowerCranesHeavyliftingfortallbuildin

6、gsMax.unsupportedheighttypically265’(80m)Muchgreaterheightswhensupportedbybuilding’sframeworkTowerCranesMax.reach230’(70m)Max.lift19.8Tons(18t)Counterweight=20TonsMaximumload-moment=300tonne-meterex.:30m(100’)radiusyieldsa10tliftingcapacityLimitswitchesformax.load&load-mom

7、entTowerCranesMastanchor-boltedto30’x30’x4’padConcretepadweighsover500,000#’sMastsectionsaretypically20’x10’squareTowerCranesSlewingunitmountsattopofmast(tower)Cat-head,jib,trolley,machineryarm,ties,&operator’scabMachineryarmcontainsmotors,electronics,cabledrum,andcounterw

8、eightTowerCranesUtilityConstructionUndergroundvs.aerialPublic&privateTransmission,distrib

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