螺旋槳安裝工藝

1.在本工藝安裝前，螺旋槳及與其相配的螺旋槳軸均已經(jīng)精加工好，并經(jīng)驗(yàn)船師和船東認(rèn)可完畢。Propellershaftandsterntubesealtobepreinstalledaccordingtothedrawingrequirementandconfirmedbyowner&surveyor.2?螺旋槳錐孔與尾軸錐體的刮配ScrapingfittingjobforinterfacebetweenPropellerconeholeandtailshafttaper螺旋槳放在碼頭上，如圖：放置錐孔大端朝上，葉片用木墩墊好，用水平儀將轂朝上端面調(diào)正到水平位置，確保水平度在0.5/1000范圍內(nèi)，然后用吊車將吊鉤吊在專用吊環(huán)上吊起尾軸，用框式水平儀將尾軸校垂直，并對(duì)準(zhǔn)螺旋槳錐孔的軸中心線，慢慢地把尾軸放下使尾軸錐體恰好插入錐孔內(nèi)，將尾軸吊起，在尾軸錐體上涂色油，再放下尾軸螺放槳錐孔與呢軸錐體劭配示意圖當(dāng)尾軸錐體與螺旋槳錐孔配合的相應(yīng)位置距離等于50~100MM時(shí)急放吊車剎車，使尾軸借自重快速落下插入錐孔內(nèi)再吊起刮削，反復(fù)進(jìn)行，從粗刮到精刮，直至尾軸錐體與螺旋槳錐孔的接觸面積在75%以上，且每一平方英寸的面積上不少于3~4點(diǎn)，并且接觸面應(yīng)該用0.03mm的塞尺檢查，錐孔大端接觸面應(yīng)好于小端，即大端接觸點(diǎn)要略硬。本螺旋槳為無(wú)鍵連接，但尾軸與螺旋槳的配刮時(shí)的方向同樣要固定，以便安裝時(shí)照此方向。PutthePropelleronthedockandsupportbywoodenpiecesandkeepithorizontalasfigure.HavethelargetaperholeofPropellerupward,andkeepthehorizontaldeflectionofthelargetaperholeplaneofthepropellerintherangeof0.5/1000,Liftthetailshaftusinghookandspecialliftingring,adjusttailshaftverticalbyframegradienterandkeepitscenterlineassameasthepropeller,thenlowerthetailshaftslowlyandmakethescrewshaftconeinsertintothetaperholeofpropeller,liftthetailshaftandputsomeblueoilontheslopefaceofthetailshaft.loweritslowlyuntiltheheighttothepropellertopisabout5o-100,thenloweritasfastaspossible.letthetailshaftfallendownbyitsweight,afterthis,liftthetailshaftandscrapethetaperholeofpropeller,putblueoilonthetaperfaceagain,letthesternshaftfallendownagain,scrapethetaperholeofpropelleragainuntiltheinterfacemorethan75%,andkeepatleast3or4pointinpersquareinchtobefoundandthecontactfaceofthetaperholelargeendisbetterthantheotherend.Theinterfacealsoshouldbecheckedbyfeelerofthickness0.03mm.Afterthesesteps,wecansaytheinterfacebetweentheslopefaceoftailshaftandthetaperholeofthepropellerisOK.Asthepropelleriskeylessconnectionsomarksshouldbemadeandpainattentiontowhenmatching,sothatinstallaccordingtothemarks.3.螺旋槳安裝時(shí)的準(zhǔn)備條件Requirementsbeforeinstallation前后軸承按要求安裝到位，尾軸及前密封暫時(shí)布置到相對(duì)準(zhǔn)確的位置，放入尾軸管內(nèi)，并經(jīng)船檢和船東認(rèn)可。Afterandforebearingshouldbefittedcompletely,andpropellershaftandforesealequipmentshouldbesetinthesterntube.AndthesejobsmustbeinspectedandapprovedbyRINAsurveyorandshipowner.在現(xiàn)場(chǎng)驗(yàn)船師和船東代表的監(jiān)督下先將艉密封裝置布置于艉軸上，暫不固定，然后將螺旋槳安裝到艉軸上，(安裝螺旋槳時(shí)，請(qǐng)調(diào)整好螺旋槳與尾軸的徑向位置，左右偏差不能超過(guò)5mm),并將液壓螺母安裝到位(參照軸系布置圖M252-104)。PuttheaftersealequipmentontheshaftunderRINAsurveyorandshipowner'surveillance,(itcannotfixednow),thenputthepropellerontheshaft.Adjustthemarkonthecircumferentialdirectionandkeepthedeviationwithin5mminrightandleftdirection.Nowwecansecurethehydraulicnuttothecorrectpositionaccordingtothedrawingofshaftarrangement(drawingNo.:M252-104).將泵接到槳?dú)ず鸵簤郝菽干?，注入液壓油，直到放氣口有液壓油溢出即可，同時(shí)擰緊放氣旋塞。Connectflexiblehoseasattacheddrawingpipingsystem.Thenventoutairinthehyd.nutandinthepropellerbossbyusingthemanualpump,afterthattightentheplugsonthepropellerandhydraulicnut.4.螺旋槳的安裝Installationofpropeller根據(jù)現(xiàn)場(chǎng)的環(huán)境溫度(用點(diǎn)溫計(jì)點(diǎn)取每片槳葉的根部和尾軸的溫度)，確定出螺旋槳的實(shí)際壓入量：即0°C時(shí)的壓入量為15.47mm,35°C的壓入量為13.48mm。其他溫度對(duì)應(yīng)的壓入量見下表見表：壓入量L(mm)與環(huán)境溫度t(C)。Accordingtotablepush-updistance&temperature,decidethedistancebasedonthetemperatureofthehyd.nut&propeller.(Locationistobebetweeneachbladerootandontheshaft.)AccordingtomessagesuppliedbymakerHHI,thepush-updistanceis15.47mmattemperature0°C,andthedistaneeis13.48mmattemperature35°C.Others

intermediatedistancebetweenthesevaluescanbecalculatedbylinearinterpolation,andshowninfollowingtab環(huán)境溫度相對(duì)應(yīng)的螺旋槳的壓入長(zhǎng)度見下表;Temperature(t,oc)-push-updistanee(L,mm)-80c-70C-60c-50C-40C-30C-20C-10C00CX15.9315.8715.8115.7615.7015.6415.5815.5315.4710C20C30C40c50C60c70c80c90CX15.4115.3615.3015.2415.1915.1315.0715.0214.96100C110C120C130C140C150C160c170C180cX14.9014.8414.7914.7314.6714.6214.5614.5014.45190C200C210C220C230C240C250C260c270C14.3914.3314.2814.2214.1614.1114.0513.9913.93280C290C300C310C320C330C340C350C360C13.8813.8213.7613.7113.6513.5913.5413.4813.42X370C380C390C400C410C420C430C440C450CX13.3713.3113.2513.2013.1413.0813.0212.9712.91螺旋槳零位的確定：Decide0point.根據(jù)無(wú)鍵連接計(jì)算：當(dāng)在干態(tài)(僅有油供給液壓螺母，螺旋槳無(wú)漲轂壓力的狀態(tài))時(shí)，當(dāng)壓力達(dá)到692KN(對(duì)應(yīng)的壓強(qiáng)為：壓力/液壓螺母活塞面積=692*103N/1173cm2=59bar)時(shí)，認(rèn)為該點(diǎn)為零點(diǎn)位置。Accordingtoresultofpush-upcalculationforkeylesspropellersupplied圖3橫坐標(biāo)上的A點(diǎn)即為圖3橫坐標(biāo)上的A點(diǎn)即為0點(diǎn)(correspondingpressureis59bar)indry-typecondition.我們?cè)诂F(xiàn)場(chǎng)安裝時(shí)，可用以前作圖求零點(diǎn)的方法驗(yàn)證如下： A在干態(tài)時(shí)，當(dāng)壓力表壓力達(dá)到 P50bar時(shí)，千分表重新調(diào)零。然后每壓入0.2mm為一取值點(diǎn)，記下壓力-壓入量的值。取3~4點(diǎn)，然后按圖3作出零點(diǎn)位置。Closevalveaandb,openthevalvec,thenpumpoilintothepropellernut,whentheoilpressureupto50bar,adjustthecentigradegaugetozeroposition,thenstop,andrecordtheoilpressureper0.2mm(pulluplength).Thenmakearectangularcoordinateasshowninfig.3,andpointAisthezeroposition.Thenregularthecentigradetozero.根據(jù)上述零點(diǎn)的位置，確定出需要的壓入量。Decidethepush-updistanceaccordingtothezeropoint.打開閥門a和b,啟動(dòng)液壓油泵，逐步升高液壓螺母壓力和螺旋槳漲轂壓力。根據(jù)現(xiàn)場(chǎng)測(cè)量的溫度，將螺旋槳壓到位。允許壓入量偏差為2％。在壓油的同時(shí)，每隔1mm記錄下對(duì)應(yīng)的壓力，并將記錄結(jié)果計(jì)入。并將記錄結(jié)果與附表-壓入量表相比較作校核。Openthevalveaandb,starttheliquidtopresstheoilpumpA.Pressuretothehydraulicnutandpropellerbossinterfaceandpoitrinetheminstepwithdistanceabout1mm.Push-uptothedesigneddistancecorrespondingtothemeasuredtemperatur