mechanical-power-presses-presentation.pptxVIP专享VIP免费原创优质

SubpartO1910.217Mechanicalpowerpresses1910.217MechanicalPowerPresses•(a)GeneralRequirements•(b)MechanicalPowerPressGuardingandConstruction,General•(c)SafeguardingthePointofOperation•(d)Design,Construction,SettingandFeedingDies•(e)Inspection,Maintenance,andModificationofPresses•(f)OperationofPowerPresses•(g)ReportsofInjuriestoEmployee’sOperatingMechanicalPowerPresses•(h)PresenceSensingDeviceInitiation•(1)-(3)Reserved•(4)ReconstructionandModification•(5)ExcludedMachines1910.217(a)GeneralRequirementsHYDRAULIC&PNEUMATICPOWERPRESSESPRESSBRAKESHOTBENDNG&HOTMETALPRESSESFORGINGPRESSES&HAMMERSRIVETINGMACHINES&SIMILARTYPESOFFASTENERAPPLICATORS1910.217(a)(5)Excludedmachines.eEXAMPLESEXAMPLES•(1)Hazardstopersonnelassociatedwithbrokenorfallingmachinecomponents•(2)Brakes•(3)Machinesusingfullrevolutionpositiveclutches•(4)FootPedals(treadle)•(5)Handoperatedlevers•(6)Twohandtrip•(7)Machinesusingpartrevolutionclutches•(8)Electrical•(9)Slidecounterbalancesystems•(10)AirControllingequipment•(11)Hydraulicequipment•(12)Pressurevessel•(13)ControlReliability•(14)BrakeSystemMonitoring1910.217(b)MechanicalPowerPressGuardingandConstruction,GeneralSUBPARTSSUBPARTS1910.217(b)(3)Machinesusingfullrevolutionpositiveclutches.SingleStrokeMechanism•(i)shallincorporateasingle-strokemechanism.•(ii)Ifthesingle-strokemechanismisdependentuponspringaction,thespring(s)shallbeofthecompressiontype,operatingonarodorguidedwithinaholeortube,anddesignedtopreventinterleavingofthespringcoilsineventofbreakage.1910.217(b)(3)Machinesusingfullrevolutionpositiveclutches.SingleStrokeMechanism•(i)Thepedalmechanismshallbeprotectedtopreventunintendedoperationfromfallingormovingobjectsorbyaccidentalsteppingontothepedal.•(ii)Apadwithanonslipcontactareashallbefirmlyattachedtothepedal.FootPedal1910.217(b)(4)Footpedals(treadle).FoottreadleTreadleCanopyguardRemovablefootpedal•(i)Atwo-handtripshallhavetheindividualoperator'shandcontrolsprotectedagainstunintentionaloperationandhavetheindividualoperator'shandcontrolsarrangedbydesignandconstructionand/orseparationtorequiretheuseofbothhandstotripthepressanduseacontrolarrangementrequiringconcurrentoperationoftheindividualoperator'shandcontrols.•(ii)Two-handtripsystemsonfullrevolutionclutchmachinesshallincorporateanantirepeatfeature.1910.217(b)(6)Two-handtrip.1910.217(b)(6)Two-handtrip.1910.217(b)(6)(iii)Iftwo-handtripsystemsareusedonmultipleoperatorpresses,eachoperatorshallhaveaseparatesetofcontrols.1910.217(b)(7)Machinesusingpartrevolutionclutches.1910.217(b)(7)DistinguishingPartRevfromFullRev•(ii)Aredcolorstopcontrolshallbeprovidedwiththeclutch/brakecontrolsystem.Momentaryoperationofthestopcontrolshallimmediatelydeactivatetheclutchandapplythebrake.Thestopcontrolshalloverrideanyothercontrol,andreactuationoftheclutchshallrequireuseoftheoperating(tripping)meanswhichhasbeenselected.1910.217(b)(7)Machinesusingpartrevolutionclutches.(continued)•beactivatedanddeactivatedincompletesetsoftwooperator'shandcontrolsperoperatingstationbymeanscapableofbeingsupervisedbytheemployer.•Theclutch/brakecontrolsystemshallbedesignedandconstructedtopreventactuationoftheclutchifalloperatingstationsarebypassed.•1910.217(b)(7)(Continued)(vii)Controlsformorethanoneoperatingstationshallbedesignedto:•1910.217(b)(8)Electrical.–(i)Amainpowerdisconnectswitchcapableofbeinglockedonlyi...