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1、四．艉軸艉管校中及其固定ALIGNMENTANDFIXINGOFSTERNTUBE4.1艉管就位POSITIONINGOFSTERNTUBE4.1-1:艉管就位條件PREPARATIONOFSTERNTUBEPOSITIONINGA.艉管中心線的找正DECIDINGOFSTERNTUBECENTERLINEA.1將艉管布置于車間平臺上保持水平;PLACESTERNTUBEHORIZONTALONPLATFORMINWORKSHOPA.2根據(jù)艉管前后φ655孔中心線在艉管前后端面上在水平方向及垂直方向上劃出水平線和垂直線并打好洋沖眼,那么前后艉管端面的十字線的交點的連線即為艉管外圓
2、的理論中心線.完工成后需交船東船檢認(rèn)可.DRAWAHORIZONTALLINEANDAVERTICALLINEACCORDINGTOTHECENTERLINEOFφ655HOLEATSTERNTUBEFOREANDAFT.END,ANDMAKEAMARK,SOTHELINEBETWEENTHETWOINTERSECTIONPOINTSSTATEDABOVEISTHETHEORYCENTERLINEOFS/TOUTERCIRCLE,ANDSHOULDBEAPPROVEDBYSHIPOWNERANDSURVEYER.B.在本工藝進行的過程中,船上應(yīng)停止沖擊和有振動的工作.WHENTH
3、ISSTEPISBEINGDONE,ANYIMPACTINGWORKORVIBRATIONJOBSHOULDBESTOPPED.4.2艉管就位POSITIONINGOFSTERNTUBEA.按“澆注環(huán)氧總裝圖”將八只艉管調(diào)整螺栓(圖6)預(yù)先布置到相應(yīng)位置處,螺栓頭部應(yīng)不伸入支撐套內(nèi)部以免影響艉管放入;PREPLACE8PCSJACKINGSCREWS(DRAWING6)ATTHECORRESPONDINGPOSITIONACCORDINGTO“POURINGEPOXYASSEMBLY”DRAWING.B.按“環(huán)氧澆注總裝圖”焊好前后艉管支撐套上的四個透氣管及二個注入管.注入管及透
4、氣管均采用φ27X2.5無縫鋼管.鋼管上應(yīng)無任何油漆,油污等;WELDTHE4PCSAIRVENTPIPESAND2PCSFILLINGPIPESONTHEFWDANDAFTSTERNOUTERBOSSESACCORDINGTOTHE“POURINGEPOXYASSEMBLY”.THEFILLANDVENTPIPESISSEAMLESSSTEELPIPEOFφ27X2.5,WITHOUTANYPAINTANDOILETC.C.為防止艉管塞入支撐套后發(fā)生軸向位移,需按附圖9制作一根法蘭面壓板,并根據(jù)圖9中所示位置焊好固定螺栓M24;MAKE1PCSTOPPINGPLATEBYCHA
5、NNELSTEELFORPREVENTINGTHEMOVEMENTALONGTHESHAFTLINEAFTERPUSHINGTHESTERNTUBEINTOTHESTERNFRAMEBOSS,SEEDRAWING9,ANDWELDTHEFIXINGSCREWM24ASDRAWING9.D.根據(jù)“澆注環(huán)氧總裝圖”安裝密封板(圖5);INSTALLSEALINGPLATE(DRAWING5)ACCORDINGTOTHE“POURINGEPOXYASSEMBLY”.E.準(zhǔn)備至少六只工作載荷為4.5噸的手拉葫蘆.PREPAREATLEAST6PCSCHAINBLOCKSWHOSEWORK
6、LOADIS4.5TON.F.將艉管放至圖7中所示位置,艉管上下方向需按軸系布置圖擺正,調(diào)節(jié)小車上下水平位置使得艉管中心線與軸理論中心線平行.PUTSTERNTUBETOTHEPLACESHOWNONDRAWING7,ADJUSTITALONGVERTICALDIRECTIONASSHAFTINGARRANGEMENTDRAWING,ANDADJUSTTHETROLLEYUNTILSTERNTUBECENTERLINEPARALLELWITHSHAFTTHEORYCENTERLINE.G.將提升桿裝至艉管的艏端,提升桿和艉管接觸部份均需用銅皮襯墊以防劃傷艉管內(nèi)表面并用銅螺栓緊固好
7、（圖8）.檢查艉管清潔度.艉管前后支撐套內(nèi)表面及艉管外表面等與環(huán)氧樹脂接觸處(含澆注孔,透氣孔內(nèi)表面)均需清除鐵銹,油污,毛刺,焊渣,油漆和灰塵等.提交維信服務(wù)工程師檢查清潔并滿足要求;8INSTALLLIFTINGRODTOTHEFWDSTERNTUBE,ADDBRASSPADATCONTACTPARTBETWEENLIFTINGRODANDSTERNTUBEPREVENTINGFROMSCUFFINGTHEINNERSURFACEOFSTERNTUBEANDFIXWITHBR
