预防背及腰扭伤的安全培训.ppt

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1、ForwardTheForcesInvolvedTheamountofforceyouplaceonyourbackinliftingmaysurpriseyou!Thinkofyourbackasalever.Withthefulcruminthecenter,itonlytakestenpoundsofpressuretoliftatenpoundobject.TheForcesInvolvedIfyoushiftthefulcrumtooneside,ittakesmuchmoreforcetoliftthesameo

2、bject.Yourwaistactslikethefulcruminaleversystem,ona10:1ratio.Liftingatenpoundobjectputs100poundsofpressureonyourlowerback.TheForcesInvolvedWhenyouaddinthe105poundsoftheaveragehumanuppertorso,youseethatliftingatenpoundobjectactuallyputs1,150poundsofpressureonthelowe

3、rback.TheForcesInvolvedIfyouwere25poundsoverweight,itwouldaddanadditional250poundsofpressureonyourbackeverytimeyoubendover.CommonCausesofBackInjuriesAnytimeyoufindyourselfdoingoneofthesethings,youshouldthink:DANGER!Mybackisatrisk!Trytoavoidheavylifting..Especiallyr

4、epetitiveliftingoveralongperiodoftimeCommonCausesofBackInjuriesTwistingatthewaistwhileliftingorholdingaheavyload...thisfrequentlyhappenswhenusingashovel.CommonCausesofBackInjuriesReachingandlifting...overyourhead,acrossatable,oroutthebackofatruck....CommonCausesofB

5、ackInjuriesLiftingorcarryingobjectswithawkwardoroddshapes....CommonCausesofBackInjuriesWorkinginawkward,uncomfortablepositions...CommonCausesofBackInjuriesSittingorstandingtoolonginoneposition...sittingcanbeveryhardonthelowerback....CommonCausesofBackInjuriesItisal

6、sopossibletoinjureyourbackslippingonawetfloororice...TheFormationMechanismoflumbardischerniation（slippeddisc）OFFICEERGONOMICS办公室工效学Sitting/Chairs座椅Convenientlyadjustablebacksupport(verticalandhorizontal)水平、垂直方向可调的靠背Goodseatcushioning良好的座位缓冲Swivel(usually)旋转Adjustab

7、leheight(pneumaticliftpreferred)高度可调（气压升降）5legs(forstability)5只椅腿稳定Durablefabricfor“breathing”耐用、透气的织物WorkstationLayout工作台布局ViewAngle视角(10-30)WorkstationSurfaceHeight工作台面高度(65-75cm:Adjustable70cm:notadjustable)SeatDepth座椅深度(38-43cm)ViewingDistance(45-70cm)视距Table

8、HeightAdjustment台高调节5CastorsSeatPanHeightAdjustment座椅高度调节ChairHeight椅高(35-50cm)SeatBackInclinationAdjustment椅背倾斜角度调节LumbarSupport腰部支撑PreventBackI