搜索
河南理工大学本科毕业设计（论文）I摘要目前，国内外使用的颚式破碎机种类很多,复摆颚式破碎机结构简单，质量较轻，构件较少，结构更紧凑，生产率高，操作和维修方便等优点，所以在物料破碎作业中运用最广泛的还是复摆颚式破碎机。本毕业设计主要是为满足生产需求出料口尺寸：20～60mm；进料块最大尺寸：210mm；产量：75m³/h而研究的。根据以上要求我设计了复摆颚式破碎机PE250×400（E：颚；P：破；250×400：进料口宽度×长度），其工作原理是：电机驱动皮带，通过皮带轮带动偏心轴旋转。动颚与偏心轴相连，当偏心轴旋转时，动颚随之上下往复运动。当动颚向上运动时，肘板与动颚夹角变大，肘板推使动颚向前运动而靠近定颚，致使物料被挤压碾碎。当动颚向下运动时，肘板与动颚夹角变小，通过拉杆与弹簧装置，动颚离开定颚，物料被排卸出去。随着偏心轴不断旋转，动颚作往复循环运动，物料不断被破碎排卸，而达到连续生产目的。设计内容主要包括了复摆颚式破碎机的动颚、偏心轴、皮带轮、动颚齿板、机架等一些重要部件；另外对颚式破碎机的工作原理及特点和主要部件作了介绍，包括保险装置、调整装置、机架结构、润滑装置等；同时对机器参数（主轴转速、生产能力、破碎力、功率等）作了计算。此外也简单介绍了破碎的意义、破碎工艺和破碎比的计算，颚式破碎机的主要部件的安装、颚式破碎机的操作及维修等。关键词：颚式破碎机；工作原理；动颚。河南理工大学本科毕业设计（论文）IIABSTRACTAtpresent,domesticandinternationaluseofmanydifferenttypesofjawcrusher,JawCrushersimplestructure,thequalityoflight,fewercomponents,morecompactstructure,highproductivity,easyoperationandmaintenance,etc.,sothematerialcrushingoperationisthemostwidelyusedJawCrusher.Thisgraduationprojectmainlyisformeetstheproductionneed:Dischargeholesize:20～60mm;Feedingblockgreatestsize:210mm;output:75m³/hAccordingtotheaboveaskedmetodesignaJawCrusherPE250x400（EstandsforJaw;PstandsforCrusher;250x400standsforthedischargeport’swidthandlength）,itsworkingprincipleis:themotordrivebelt,pulleydrivenbytheeccentricaxis.Movingjawandtheeccentricshaft,whentheeccentricshaftrotates,movingupanddownreciprocatingmotionalongthejaw.Whenthemovingjawmovesupward,theanglebetweentoggleplateandmovingjawbecomeslarger,fixedjawbracketbringingforwardmovementclosetothescale,causingthematerialtobeextrudedcrushed.Whenthemovingjawmovesdown,theanglebetweentoggleplateandmovingjawdecreases,throughtherodandspringmechanism,movingthefixedjawtoleave,thematerialisrankeddischargeout.Withtheconstantrotationofeccentricshaft,movingthejawbackandforthcycleofmovement,constantlybeingbrokendisposingofthematerial,toachievethepurposeofcontinuousproduction.Thecontentofthisdesigntotallyincludejawcrusher’smovejaw,eccentricshaft,beltpulley,toothedrackofmovejaw,rackandsomeimportantcomponents;inotherweintroducedtheprincipleofjawcrusher,Featuresofjawcrusherandimportantcomponents,included河南理工大学本科毕业设计（论文）IIIinsuranceunit,adjustmentunit,rackstructure,lubricationunitandsoon.Atthesametime,wecomputedparameterofthemachine(thespeedofmainaxle,Productivity,thestrengthofstavepowerandsoon)anddesignedtheeccentricshaf.Furthermore,wesimplyintroducedthesignificanceofstave,stavetechnologyandthecomputationofstavestrength,Installationofthemaincomponentsinjawcrusher,theoperationandmaintenanceofjawcrusherandsoon.Keyword:JawCrusher；Workingprinciple；Jawcrusher’smovingjaw.河南理工大学本科毕业设计（论文）IV目录摘要..............................................................................................................................I目录..................................................................................................................................IV前言................................................................................................................................11物料性能及破碎机分类...................................................................................................21.1物料破碎及其意义...........................................................................................................21.1.1破碎的目的...............................................................................................................21.1.2破碎产品的粒级特性...............................................................................................21.2矿石的破碎及力学性能....................................................................................................41.3破碎机的分类及动颚轨迹特性........................................................................................61.3.1破碎机分类................................................................................................................61.3.2颚式破碎机的动颚轨迹特性...................................................................................72颚式破碎机工作原理及结构分析....................................................................................102.1颚式破碎机的工作原理..................................................................................................102.1.1简摆颚式破碎机工作原理.....................................................................................102.1.2复摆颚式破碎机工作原理.....................................................................................112.2主要零部件的结构分析..................................................................................................112.2.1动颚.........................................................................................................................122.2.2齿板.........................................................................................................................122.2.3肘板（推力板）.....................................................................................................132.2.4调整装置.................................................................................................................142.2.5保险装置.................................................................................................................152.2