MG200-487型薄煤層采煤機(jī)截割部設(shè)計(jì)說明書.doc

中國礦業(yè)大學(xué)2008屆本科生畢業(yè)設(shè)計(jì)第1頁摘要本文介紹了采煤機(jī)的發(fā)展歷史、組成及工作原理，在分析煤炭工業(yè)及煤炭工業(yè)的行業(yè)背景的基礎(chǔ)上，展望了采煤機(jī)的發(fā)展趨勢(shì)，并針對(duì)采煤機(jī)的發(fā)展現(xiàn)狀，進(jìn)行了MG200/487型采煤機(jī)的截割部設(shè)計(jì)。本文首先確定了設(shè)計(jì)方案和選擇了基本部件并開展了傳動(dòng)系統(tǒng)的可靠性分析，MG200/487型采煤機(jī)截割部主要是由一個(gè)減速箱和四級(jí)齒輪傳動(dòng)組成，截割部電機(jī)放在搖臂內(nèi)橫向布置，電動(dòng)機(jī)輸出的動(dòng)力經(jīng)由三級(jí)直齒圓拄齒輪和行星輪系的傳動(dòng)，最后驅(qū)動(dòng)滾筒旋轉(zhuǎn)。并對(duì)所設(shè)計(jì)的齒輪和花鍵進(jìn)行了公差分析，同時(shí)介紹了截割部的安裝、維護(hù)和故障處理。本采煤機(jī)截割部具有較高的可靠性和安全維修性。關(guān)鍵詞：滾筒式采煤機(jī)；截割部；行星齒輪傳動(dòng)中國礦業(yè)大學(xué)2008屆本科生畢業(yè)設(shè)計(jì)第2頁ABSTRACTThispaperpresentsthedevelopmenthistory,thecompositionandtheprincipleofshearersinbrief.Onthefoundationofanalyzingthetradebackgroundofcoalindustryandminingequipment,lookaheadthedevelopmentofshearers,andaccordingtothepresentdevelopmentsituationofshearers,wecarriedoutthedesignofMG200/487-WDShearerscuttingunit.Thisdesignfirstlyfixedondesignschemeandselectedbasiccomponents,andbesides,developedthereliabilityanalysisoftransmissionsystem.ThedesignofMG200/487-WDShearerscuttingunit.ItismadeupofagearboxandmoderatebreezegearwheeltransmissionthattheMG200/487-WDtypeminingmachinecutsthecuttingdepartment,Cuttheelectricalmachineryofcuttingdepartmentandputtofixuphorizontallyintherockerarm,Thepowerthatthemotoroutputsleansonaroundoftransmissionofdepartmentofgearwheelandplanetroundviathetertiarystraighttooth,Urgethecylindertorotatefinally.Andgearsandinvolutesplinestolerancesofgeometricalquantitywereanalyzed.Atthesametime,introducedtheinstallation,maintenanceandfaultdisposalofthiscuttingunit.ThecuttingunitofMG200/487-WDShearerhasreliabilityandinstallationmaintainability.Keywords:shearer；thecuttingunit；planetarygeardrive中國礦業(yè)大學(xué)2008屆本科生畢業(yè)設(shè)計(jì)第3頁目錄1概述.11.1引言.41.2我國采煤機(jī)30多年的發(fā)展進(jìn)程.51.2.120世紀(jì)70年代是我國綜合機(jī)械化采煤起步階段.51.2.220世紀(jì)80年代是我國采煤機(jī)發(fā)展的興旺時(shí)期.61.2.320世紀(jì)90年代至今是我國電牽引采煤機(jī)發(fā)展的時(shí)代.71.2.4國際上電牽引采煤機(jī)的技術(shù)發(fā)展?fàn)顩r.81.3國內(nèi)電牽引采煤機(jī)的發(fā)展?fàn)顩r.101.4結(jié)構(gòu)特征與工作原理.111.4.1搖臂.111.4.2截割電動(dòng)機(jī).111.4.3牽引部.132總體方案的確定.162.1主要技術(shù)參數(shù)如下：.162.2傳動(dòng)方案的確定.182.2.1傳動(dòng)比的確定.182.2.2傳動(dòng)比的分配.183傳動(dòng)系統(tǒng)的設(shè)計(jì).193.1各級(jí)傳動(dòng)轉(zhuǎn)速、功率、轉(zhuǎn)矩的確定.203.2齒輪設(shè)計(jì)及強(qiáng)度效核.213.3截割部行星機(jī)構(gòu)的設(shè)計(jì)計(jì)算.283.3.1齒輪材料熱處理工藝及制造工藝的選定.293.3.2確定各主要參數(shù).293.3.3幾何尺寸計(jì)算.323.3.4.嚙合要素驗(yàn)算.343.3.5齒輪強(qiáng)度驗(yàn)算.353.4軸的設(shè)計(jì)及強(qiáng)度效核.463.4.1選擇軸的材料.463.4.2軸徑的初步估算.463.4.3求作用在齒輪上的力.463.4.4軸的強(qiáng)度效核：.473.4.5安全系數(shù)效核計(jì)算.50中國礦業(yè)大學(xué)2008屆本科生畢業(yè)設(shè)計(jì)第4頁3.5軸承的壽命校核.523.5.1對(duì)截軸的軸承22219c和Nj419進(jìn)行壽命計(jì)算.523.5.2行星輪軸承壽命的計(jì)算.533.6花鍵的強(qiáng)度校核.543.6.1截軸花鍵校核.543.6.2行星輪系花鍵校核.544采煤機(jī)的使用和維護(hù).544.1潤滑及注油.554.2地面檢查與試運(yùn)轉(zhuǎn).554.2.1試運(yùn)轉(zhuǎn)前的檢查：.554.2.2試運(yùn)轉(zhuǎn)時(shí)檢查：.554.3下井及井下組裝.564.4采煤機(jī)的井下操作.564.4.1操作前的檢查：.564.4.2試運(yùn)轉(zhuǎn)中注意事項(xiàng)：.564.5機(jī)器的維護(hù)與檢修.574.6采煤機(jī)軸承的維護(hù)及漏油的防治.584.7硬齒面齒輪的疲勞失效及對(duì)策.604.8煤礦機(jī)械傳動(dòng)齒輪失效的改進(jìn)途徑.634.8.1設(shè)計(jì).634.