8 Power_tools_c.pptxVIP专享VIP免费原创优质

1Tools–HandandPower2HazardsWorkersusinghandandpowertoolsmaybeexposedtothesehazards:objectsthatfall,fly,areabrasive,orsplashharmfuldusts,fumes,mists,vapors,andgasesfrayedordamagedelectricalcords,hazardousconnectionsandimpropergrounding3BasicToolSafetyRules•Maintainregularly•Userighttoolforthejob•Inspectbeforeuse•Operateaccordingtomanufacturers’instructions•Usetherightpersonalprotectiveequipment(PPE)•Useguards4HandToolHazardsHazardsareusuallycausedbymisuseandimpropermaintenanceDonotuse:wrencheswhenjawsaresprungimpacttools(chiselsandwedges)whenheadshavemushroomedtoolswithloose,crackedorsplinteredhandlesascrewdriverasachiseltoolswithtapedhandles–theymaybehidingcracksCrack5HandTools-ProtectionUsePPE,suchassafetygogglesandglovesKeepfloorsurfacewhereworkingfreefromdebrisandtrippingorslippinghazardsKeepcuttingtoolssharp6PowerToolsMustbefittedwithguardsandsafetyswitchesExtremelyhazardouswhenusedimproperlyDifferenttypes,determinedbytheirpowersource:ElectricPneumaticLiquidfuelHydraulicPowder-actuated7SwitchesHand-heldpowertoolsmustbeequippedwithoneofthefollowing:ConstantpressureswitchshutsoffpoweruponreleaseExamples:circularsaw,chainsaw,grinder,hand-heldpowerdrillOn-OffSwitchExamples:routers,planers,laminatetrimmers,shears,jigsaws,nibblers,scrollsaws8PowerTools-Precautions•Disconnecttoolswhennotinuse,beforeservicingandcleaning,andwhenchangingaccessories•Keeppeoplenotinvolvedwiththeworkawayfromthework•Secureworkwithclampsoravise,freeingbothhandstooperatethetool•Don’tholdtheswitchbuttonwhilecarryingaplugged-intool•Keeptoolssharpandclean•Considerwhatyouwear–looseclothingandjewelrycangetcaughtinmovingparts•Removedamagedelectrictools&tagthem:“DoNotUse”9PowerTools–PrecautionsElectricCordsDon’tcarryportabletoolsbythecordDon’tuseelectriccordstohoistorlowertoolsDon’tyankcordorhosetodisconnectitKeepcordsandhosesawayfromheat,oil,andsharpedges10Toprotectaworkerfromshock,thesetoolsmust:havea3-wirecordpluggedintoagroundedreceptaclebedoubleinsulated,orbepoweredbyalow-voltageisolationtransformerElectricPowerToolsDoubleinsulatedmarkingsPlugwithagroundingpin11ElectricTools–GoodPractices•Operatewithindesignlimits•Useglovesandsafetyshoes•Storeinadryplace•Don’tuseinwetlocationsunlessapprovedforthat•Keepworkareaswelllit•Ensurecordsdon’tpresentatrippinghazard12AbrasiveWheelMachineryWorkrestsmustbewithin1/8-inchofthegrindingwheel.Hub,nutandspindlemustbecovered.Nomorethan25%ofthegrindingwheelexposed.13AbrasiveWheelMachineryThedistancebetweenthewheelperipheryandtheadjustabletonguemustneverexceed1/4-inch.14InspectingAbrasiveWheelsBeforemounting:inspectcloselyfordamageperformsound-orring-testtoensurefreefromcracks/defectsTotest:tapwheelgentlywithalight,non-metallicinstrumentifwheelsoundscrackedordead,donotuseitbecauseitcouldflyapart15AbrasiveWheelUseTopreventcracking:•fitthewheelonthespindlefreely•tightenthespindlenutenoughtoholdthewheelinplacewithoutdistortingtheflangeLetthetoolcomeuptospeedpriortogrindingorcuttingDon’tstandinfrontofthewheelasitcomesuptofullspeedUseeyeand/orfaceprotectionEnsurethespindlespeeddoesn’texceedthemaximumspeedmarkedonthewheel16GuardingGuardexposedmovingpartsofpowertoolsGuardbelts,gears,shafts,pulleys,sprockets,spindles,flywheels,chains,orothermovingpartsNeverremoveaguardwhenatoolisinuse17Thepointofoperati...