曳引带的截短

SECTION2：Beltshortening第二节曳引带的截短INTRODUCTION：ThisdocumentwillgiveastepbystepprocedureonhowtoshortentheCoatedSteelBelts.简介：本文详细说明如何截短曳引带。TASK#工作步骤：PerformJ.H.A.withsupervisor和监督一起进行J.H.A.（作业危险分析）。Positionmaterialatappropriatefloorlevels.将材料放在适当的楼层。.Positionelevatorattoplanding.电梯开至顶层。PowerDown断电，锁闭电源并加警示。Accesspit进入底坑。Measureandrecordcounterweightrun–by测量并记录对重侧越程距离。Powerup送电。Runcartotoplanding(topofcarattoplanding)将轿厢运行至顶层（轿顶与顶层楼层平行）。Accessthepit进入底坑。Installblockingundercounterweight.在对重下面安装支撑垫块。Accesstopofcar进入轿顶。Hoist(winch)car–twoliftingpoints吊链吊起轿厢-需有两个悬挂提升点。HoistsoTOCisat.85mabovethesill,suchthatthecartopwillbeat.7mwhenloweredonsafeties轿顶升至高于顶层地坎0.85米处，这样当轿厢下降至安全钳夹紧位置时，轿顶刚好高于顶层地坎0.7米。Activatesafetygear触动安全钳装置。Lowercaronsafeties.放低轿厢，将安全钳夹紧。TOCshouldbeat.7mabovethesill轿顶应高于顶层地坎0.7米。Keeptensiononhoist.吊链保持有张力。Installrepairplatform安装工作平台。Markallofthebeltswithamarkeratthebottomoftheopeningwherethebeltcomesoverthewedge在所有的曳引带上加注标记，标记在曳引带将要刚好穿过末端悬挂楔块处。Clampthebelttobeshortenedtoanadjacentbeltwitha“C”clamp.Ensureenoughfreebeltisbetweentheclampandtheterminationtoallowshorteningtothedesiredlength.用一个“C”形夹把要缩短的曳引带夹到其相邻的曳引带上。确保在夹钳和带端之间有足够的长度，可满足所要截短的长度。Thisremovetheweightofthebeltthatisinthehoistway.这将减少井道内曳引带的重量Loosenthetwoboltsandtheclampingplateatthelowerfrontofthetermination,andfeedthebelttailoutoftheclamp松开位于末端悬挂下部的两颗螺栓和夹钳板，并把曳引带从夹钳中拉出。Loosenthebeltandwedge.Thewedgemayhavetobeforcedoutbyusingahammerandpunch松开曳引带楔块。可能需要用锤子和凿子打出楔块。Thebeltcanbepulledthroughtheterminationtothedesiredlength.Measurefromthemarkjustapplied,tothebottomoftheopeningtocheckfordesiredlengthtobeshortened（Rememberitis2:1roping）也可从悬挂端另一处拉入曳引带，拉入适当的长度。测量先前标记处到曳引带末端的距离，验证需截短的长度。（注意绳速比为2:1）Pullsharplyontheloadsideofthebelttosetthewedge在承重侧快速用力拉入曳引带，以使楔块卡入。Feedthebeltthroughthefrontclampandtightenthebolts将曳引带穿进前侧夹钳，收紧螺栓。Trimthebelttailto30mm曳引带尾部保证留有30mm长后，截掉多余部分。Repeatsteps18through24forallbelts重复第18至24步骤，截短其它曳引带。Liftcarupandresetsafeties提升轿厢，复位安全钳。Lowercarandputtensionontheropes放低轿厢，施加张力于曳引带上。Equalizethebelts.Measurethespringsandmakethemallthesamelength.使曳引带张力均衡。测量弹簧长度并把它们调整相等。Removerigging/platform拆除吊链和工作平台。Runcardownandremovecounterweightblocking轿箱下行，撤掉对重支撑垫块。Runcardowntobottomandbackup下行轿厢至底层，再上行返回。Checkterminations：检查曳引带悬挂终端：-makesureequaltensionBeltsarerunningtruewithinbeltgroove. 确认曳引带张力相等，于曳引轮带槽内运行。Adjustterminationsifrequired假如需要，则重新调整曳引带终端。ExitTOC退出轿顶。Runsystematratedspeed.1