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MG200-475-W型采煤机设计说明书.doc

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MG200-475-W型采煤机设计说明书.doc

第1章绪论..............................................................................................................11.1引言..............................................................................................................11.2采煤机械概述................................................................................................11.2.1采煤机械化的发展...............................................................................11.2.2机械化采煤的类型...............................................................................21.3采煤机简述...................................................................................................31.31采煤机的分类、组成和工作原理...........................................................31.32滚筒采煤机的工作原理.........................................................................41.33滚筒采煤机的特点................................................................................51.34煤机与刨煤机的比较............................................................................5第2章MG200/475-W型采煤机............................................................................72.1概述..............................................................................................................72.2主要用途及适用范围.....................................................................................72.3型号的组成及其代表的含义...........................................................................72.4使用环境条件...............................................................................................8第3章MG200/475-W型采煤机截割部的设计.......................................................93.1截割部传动总体方案....................................................................................93.1.1设计总则............................................................................................93.1.2已知条件............................................................................................93.1.3截割电动机的选择..............................................................................93.1.4计算传动效率...................................................................................103.1.5传动比的分配及配齿情况..................................................................103.2截割部传动系统齿轮的校核计算.................................................................113.2.1Z1与Z2啮合参数及强度计算.........................................................113.2.2Z2与Z3啮合参数及强度计算.........................................................163.2.3Z4与Z5啮合参数及强度计算.........................................................203.2.4Z6与Z7啮合参数及强度计算............................................................253.2.5Z8与Z9啮合参数及强度计算..........................................................303.2.6行星传动齿轮参数及强度计算...........................................................353.3截割部传动系统各传动轴、轴承的校核计算...............................................473.3.1截一轴轴、轴承的校核计算...............................................................473.3.2惰一轴轴、轴承的校核计算...............................................................493.3.3截二轴轴、轴承的校核计算...............................................................523.3.4截三轴轴、轴承的校核计算.....................................................................543.3.5惰二轴轴、轴承的校核计算..............................................................573..3.6惰三轴轴、轴承的校核计算.............................................................603.3.7截四轴轴、轴承的校核计算............................................................603.3.8太阳轮轴轴、轴承的校核计算...........................................................623.3.9行星轮轴轴、轴承的校核计算...........................................................633.4各轴花键的设计与校核................................................................................643.4.1截一轴花键设计计算.........................................................................643.4.2截二轴花键设计计算.........................................................................653.4.3截三轴花键设计计算.........................................................................663.4.4截四轴花键设计计算.........................................................................673.4.5输出轴花键设计计算.........................................................................68总结........................................................................................................................70参考文献.................................................................................................................71摘要本说明书描述了MG200/475W型液压牵引采煤机整机方案设计以及截割部的设计和计算过程。MG200/475W型液压牵引采煤机可用于煤层厚度为1.32.5m、煤质中硬的缓倾斜煤层。与传统的纵向布置的单电机采煤机相比,该采煤机将截割电机直接安装在截割部壳体内,齿轮减速装置全部集中在截割部壳体及行星减速器内,取消了螺旋伞齿轮、固定减速箱、摇臂回转套等结构,使其结构更简单、紧凑,可靠性更高。截割部是采煤机直接落煤、装煤的部分,其消耗的功率约占整个采煤机功率的8090,主要由截割部壳体、截割电机、齿轮减速装置、滚筒等组成。该采煤机的截割部采用四级传动前三级为直齿传动,第四级为行星传动。二级传动的圆柱齿轮为可换齿轮,使输出转速可根据不同的煤质硬度在两档速度内选取。截割部采用了三个惰轮轴,使采煤机能够满足截割高度对截割部长度的要求。设计将截割部行星减速器和滚筒直接联结,取消了安装在滚筒上的截齿,使结构简单、可靠。关键词采煤机,截割部,结构,设计AbstractThisbrochuredescribesthetypeofhydraulicMG200/475WshearertractionunitprogramdesignandcuttingtheDepartmentofDesignandcalculationprocess.MG200/475WtractionShearerhydraulicseamthicknesscanbeusedfora.32.5m,Hardcoaltothegentlyinclinedseam.WiththetraditionalverticallayoutofthesinglemotorcomparedtoShearer,Shearerwillbetherangingarminstalleddirectlyinthecuttingoftheshell,geardeviceexclusivelyoncuttingShellandplanetaryreducer,theabolitionofthespiralbevelgears,gearboxfixed,Rockerrotatingsetsofstructures,theirstructureissimpler,morecompactandhigherreliability.Rangingarmoftheshearerisdirectlychargedcoal,thecoalloaded,itsaboutthepowerconsumptionoftheentirepowershearer8090,mainlybycuttingShell,cuttingelectrical,Gearanddrumcomponents.TheshearercuttingunitusedfourdriveBeforethreestraighttoothdrive,thefourthlevelofplanetarytransmission.2DriveGeartobeforthegears,enablingtheoutputspeedcanbebasedondifferentcoalhardnessintwotrancheswithintheselectedspeed.CuttingtheDepartmenthasadoptedathreelazyaxle,tomeettheshearercuttingheightontherangingarmdegreerequirements.Designedtobecuttingplanetaryreduceranddrumdirectlink,canceledinstalledinthedrumPick,simpleandreliable.Keywordsshearer,rangingarm,structure,design

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