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MG200/475W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MG200/475W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MG200/475-W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。MG200/475-W型液压牵引采煤机可用于煤层厚度为1.3-2.5m、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80%-90%，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AbstractThisbrochuredescribesthetypeofhydraulicMG200/475-WshearertractionunitprogramdesignandcuttingtheDepartmentofDesignandcalculationprocess.MG200/475-WtractionShearerhydraulicseamthicknesscanbeusedfora.3-2.5m,Hardcoaltothegentlyinclinedseam.Withthetraditionalverticallayoutofthesingle-motorcomparedtoShearer,Shearerwillbetheranging-arminstalleddirectlyinthecuttingoftheshell,geardeviceexclusivelyoncuttingShellandplanetaryreducer,theabolitionofthespiralbevelgears,gearboxfixed,Rockerrotatingsetsofstructures,theirstructureissimpler,morecompactandhigherreliability.Ranging-armoftheshearerisdirectlychargedcoal,thecoalloaded,itsaboutthepowerconsumptionoftheentirepowershearer80%-90%,mainlybycuttingShell,cuttingelectrical,Gearanddrumcomponents.Theshearercuttingunitusedfourdrive；Beforethreestraighttoothdrive,thefourthlevelofplanetarytransmission.2DriveGeartobeforthegears,enablingtheoutputspeedcanbebasedondifferentcoalhardnessintwotrancheswithintheselectedspeed.CuttingtheDepartmenthasadoptedathreelazyaxle,tomeettheshearercuttingheightontheranging-armdegreerequirements.Designedtobecuttingplanetaryreduceranddrumdirectlink,canceledinstalledinthedrumPick,simpleandreliable.Keywords:shearer,ranging-arm,structure,design