4000TH差动分级齿辊式破碎机设计说明书毕业论文.doc

第1页摘要随着我国煤炭、冶金矿山向大型化发展，以大型破碎站为关键设备的半连续开采工艺得到了广泛的应用。而大型破碎站的主机设备一直依赖于欧、美发达国家的产品。因此，开发高效节能新型破碎设备、替代进口、满足国内大型矿山的需要势在必行。本文对差动分级齿辊式破碎机的原理、结构进行了概括介绍，重点围绕4000t/h差动分级齿辊式破碎机的研制、开发。传统破碎机依靠工作部件运动时施加与被破碎物料上的冲击压力实现破碎，效率低、能耗高、机器笨重，这些缺点限制了破碎机破碎能力的提高。为了提高破碎机的破碎能力，研制了一种差动分级齿辊式破碎机。介绍了该破碎机的工作原理、结构组成和技术特点。我国大型露天煤矿可移式破碎站始于90年代。其破碎性能仅能满足煤及较软剥离物的破碎，使用受到了限制，不能满足矿山使用要求。而本论文研究的高效、节能差动分级齿辊式破碎机由于其结构上独特的优点，使得生产能力大、破碎硬度高、破碎比大、排料粒度均匀、过粉碎小，同时，该破碎机具有分级破碎的能力。因此，是一种发展前途广阔的高效破碎设备。关键词：差动分级；齿辊式破碎机；分级破碎；结构；工作原理第2页ABSTRACTWiththedevelopmenttrendofChinesecoalandmetalminetowardstheupsizing,thehalfcontinuousminingtechnologyfeaturingalarge-scalecrushingstationasthekeyequipmenthasbeenusedwidely.Consideringthemainmachineofthelarge-scalecrushingstationalwaysdependonproductsfromthedevelopedcountriessuchasEuropeancountiesandUSA,itisimperativetodevelopanewhigh-efficiencyandenergysavingcrushingequipmenttosubstituteimportedequipmentandmeettheneedsforthedomesticlarge-scalemine.Thisarticlegivesageneraldescriptionoftheprincipleandstructureof4000t1hdifferentialclassificationtoothedrollcrusher.Whenthetraditionalcrushersmaterial,itdependsontheimpactpressurewhichtheworkingpartsmovetoimposeonthecrackingmaterial,theefficiencyislow,energyconsumptionishighandweightisheavy.Thesedisadvantageslimittheimprovementofitsbreakingability.Inordertoimprovethebreakingabilityofthecrusher,adifferentialclassificationtoothedrollcrusherisstudiedanddeveloped,andtheoperatingprinciple,structureandtechniquecharacteristicsareintroduced.ThemobilecrushingstationbegantobeusedinChineselarge-scaleopen-pitcoalmineinthe1990s.Itscrushingperformancecanonlymeetthecrushingrequirementsforthecoalandthesofterdeclaimnationsothattheapplicationisrestrictedandthemineapplicationrequirementscannotbemet.Thenewhigh-efficiencyandenergysavingdifferentialclassificationtoothedrollcrusherdevelopedbythisarticle,featureshighcapacity,highcrushinghardness,highcrushingratiouniformdischargegrain-sizeandasmallamountofover-crushingbecauseofitsuniquestructuraladvantages.While,thecrusherhavethebreakingabilityofclassification.Asaresult,itisahigh-efficiencycrushingequipmentwithabroaddevelopingfuture.Keywords:differentialclassification；toothedrollcrusher；gradedbrokenly；structure；operatingprinciple第3页目录第一章绪论·····················································································11.1煤用破碎机的国内外技术发展及现状·········································11.2选题的目的和意义···································································61.3新型双齿辊破碎机开发的意义···················································71.4新型双齿辊破碎机发展综述······················································81.4.1露天矿破碎煤和岩石的破碎机技术发展现状·······················81.4.2新型双齿辊破碎机技术发展趋势·······································9第二章总体方案的确定···································································102.1设计要求·············································································102.2参数的选取··········································································102.3方案确定·············································································10第三章差动分级齿辊式破碎机破碎机理的研究···································123.1差动分级齿辊式破碎机的用途、结构组成及基本原理·················123.1.1用途及基本原理····························································123.1.2结构组成及特点····························································123.2差动分级齿辊式破碎机的破碎机理··········································133.3差动分级齿辊式破碎机所采用的破碎理论·································153.4齿形结构、齿的布置形式及制造材料·······································163.4.1齿形结构及其与产品粒度的关系·····································163.4.2齿的布置形式及其与产品粒度的关系·······························173.4.3制造破碎齿的材料·························································18第四章差动分级齿辊式破碎机的总体设计·········································194.1参数理论计算分析·································································194.1.14000吨差动分级齿辊式破碎机破碎能力的估算·················194.1.24000吨差动分级齿辊式破碎机破碎功率的估算·················204.1.34000吨差动分级齿辊式破碎机破碎动力源选择·················214.1.4液力偶合器的选型·························································214.1.5驱动滚轴筛以及高破碎辊运动的减速系统的选型···············224.2主传动中及驱动低破碎辊运动减速系统的确定及设计·················22第4页4.2.1减速器的选用·······························································234.2.2总传动比及传动比分配··················································234.2.3减速器的设计·······························································244.3主传动结构中破碎辊轴及偏心轴的结构设计·····························444.4差动分级齿辊式破碎机颚板的材质及选择·································464.4.1颚式破碎机的工作原理··················································464.4.2颚板磨损机制·······························································474.4.3颚板材质·····································································484.4.4颚板材质选择的几点建议···············································49第五章筛分设备的分类、用途、筛面及有关设计·······························505.1筛分设备分类·······································································505.2筛分设备的用途····································································505.3筛分设备的筛面····································································515.4滚轴筛结构中闭式齿轮传动的设计··········································525.5滚轴筛辊轴的结构设计及有关参数计算····································555.5.1最小直径的确定····························································565.5.2滚轴筛辊轴的强度校核··················································575.2.3滚轴筛辊轴的轴承校核··················································60第六章破碎物料对筛分、破碎过程的影响·········································626.1影响筛分过程的因素·····························································626.1.1煤的水分对筛分过程的影响············································626.1.2煤的粒度对筛分的影响··················································636.1.3筛孔尺寸和形状的影响··················································636.1.4筛面长度和宽度····························································636.2入料粒度组成对破碎效果的影响·············································646.3入料水分对破碎效果的影响····················································64第七章破碎机械的操作和维修·························································657.1破碎机械的操作····································································657.2破碎机械的维修····································································65第八章润滑和密封·········································································668.1减速器的润滑与密封·····························································668.2破碎机的润滑与密封·····························································66