EBZ160掘进机截割部设计摘要悬臂式掘进机是为煤矿综采及高档普采工作面采掘巷道的机械设备，它结构紧凑、适应性好机身矮、重心低、操作简单、检修方便。本次设计主要是悬臂式掘进机的截割机构，悬臂式掘进机的截割机构是有伸缩式和固定式两种，按照它的截割头的分布可以分为横轴式和纵轴式两种。我所设计的掘进机截割部是纵轴式带伸缩的形式。纵轴式与横轴式相比，主要有结构简单，设计方便，便于安装和调试。在截割过程中，横轴式可以进行上下左右摆动截割，方便灵活。带伸缩的截割臂，在解决掘进机掘进面窄的问题上发挥了很大作用，掘进机截割部带伸缩，加大了截割部的长度，从而加大了截割头所经过的截割面，提高了掘进效率。我的设计中动力源是电动机，通过联轴器传动，由减速器进行减速，最后输出转速为40r/min。本设计中主要的传动结构为三级行星齿轮减速器，它包含了一级直齿轮传动和两级行星齿轮传动，输入和输出都采用花键联结。本设计中介绍了EBZ160型掘进机的检修及维护保养。关键词：掘进机；截割部；齿轮减速器；带伸缩AbstractThecantilevermechanicalboringmachineispicksandupscalePuforthecoalminesynthesispickstheworkingsurfacetoexcavatethetunnelthemechanicaldevice,itsstructurecompact,thecompatibilitygood,thefuselageshort,thecenterofgravitylow,theoperationsimple,theoverhaulisconvenient.Thisdesignmainlyisthecantilevermechanicalboringmachinecuttingorganization,thecantilevermechanicalboringmachinecuttingorganizationhasextensionandthestationarytwokinds,maydivideintotheabscissaaxistypeandtheordinateaxistypetwokindsaccordingtoitscuttingheaddistribution.Idesignmechanicalboringmachinecuttingdepartmentistheformwhichtheordinateaxistypebeltexpandsandcontracts.Theordinateaxistypeandtheabscissaaxistypecompare,mainlyhasthestructuretobesimple,thedesignisconvenient,isadvantageousfortheinstallmentandthedebugging.Aboutthecuttingprocess,theabscissaaxistypemaycarryonaboutswingscutting,facilitatesnimbly.Thebeltexpandsandcontractsthecuttingarm,playedtheverymajorroleinthesolutionmechanicalboringmachinetunnelingsurfacenarrowquestion,themechanicalboringmachinecuttingdepartmentbeltexpandedandcontracted,hasincreasedthecuttingdepartmentlength,thushasenlargedthecuttingsurfacewhichacuttinginstitutepassedthrough,enhancedthetunnelingefficiency.Inmydesignthepowersupplyisanelectricmotor,throughtheshaftcouplingtransmission,carriesonbythereductiongeardecelerates,thefinaloutputrotationalspeedis40r/min.Thedesignofthethree-tierstructureasthemaintransmissionplanetarygearreducer,whichincludeslevelstraightgeartransmissionplanetarygeartransmissionandlevels,importande