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1、摘要MG300/700-WD型交流电牵引采煤机，采用多点击驱动、横向布置的新型电牵引采煤机，总装机功率700KW，截割功率2×300KW，牵引功率2×40KW，采用机载交流变频技术调速、销轨式牵引，适用于1.9~3.8m，煤层倾角≦16°，煤质中硬或是硬的综采工作面。本说明书主要介绍了采煤机截割部的设计计算。MG300/700-WD型采煤机截割部主要是由一个减速箱和四级齿轮传动组成，截割部电机放在摇臂内横向布置，电动机输出的动力经由三级直齿圆拄齿轮和行星轮系的传动，最后驱动滚筒旋转。截割部采用四行星单浮动结构，减小了结构尺寸，采用大角度弯摇臂设计，加大了过煤空间，提高了装煤效果
2、。在设计过程中，对截割部的轴、传动齿轮、轴承和联接用的花键等部件进行了设计计算、强度校核和选用。本说明书主要针对主要部件的设计计算和强度校核进行了叙述和介绍。此外，还对MG300/700-WD采煤机的使用与维护进行了说明，以便能更好的发挥该采煤机的性能，达到最佳工作效果关键词：采煤机；截割部；减速箱；行星轮系；传动齿轮；设计IAbstractTheMG300/700-WDtypeminingmachineisthatakindofelectricitydrawsthehigh-powerminingmachine,thismachinefuselageislow,Install
3、ationislargeinpower,allelectricalmachineriesarefixeduphorizontally,mechanicaldriveisallthetransmissionofstraighttooth,electricalmachinery,walkcasedrivewheelpackageetc.cantakefromoldpoolsideout,sothetransmissionishighinefficiency,easytoinstallandsafeguard.Calculateindesignwhichcutsthecuttingd
4、epartmentofmainintroductionminingmachineofthismanual.ItismadeupofagearboxandmoderatebreezegearwheeltransmissionthattheMG300/700-WDtypeminingmachinecutsthecuttingdepartment,cuttheelectricalmachineryofcuttingdepartmentandputtofixuphorizontallyintherockerarm,thepowerthatthemotoroutputsleansonar
5、oundoftransmissionofdepartmentofgearwheelandplanetroundviathetertiarystraighttooth,urgethecylindertorotatefinally.Cutthecuttingdepartmentandadoptthefloatingstructureoffourplanetaryforms,havereducedthephysicaldimension,adoptthelargeangletocurvetherockerarmtodesign,havestrengthenedthespaceofco
6、al,haveimprovedthecoalresultofputting.Inthecourseofdesigning,tocuttingtheaxleofthecuttingdepartment,gearwheelofthetransmission,partssuchasthebearingandsplinelinkingusing,etchavedesignedtocalculate,theintensityischeckedandselectedforuse.Thismanualmainlydesignsformainpartonecalculatingtocheckw
7、iththeintensityhavenarratedandintroduced.Inaddition，returninguseforMG300/700-WDminingmachineandmaintenanceproves,Inordertobeabletogoodfullplayperformanceofpersonwhoshouldmine,reachthebestworkingresult.Keyword:MiningmachineCutthecuttingdepartmentGea
