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圆盘式割草机的设计1圆盘式割草机的设计摘要牧草收割是草产业生产中的一个重要环节，提高牧草收割机械化水平和生产率，对于确保草产业丰收极为重要。切割器是各种牧草收割机械的重要工作部件，目前，各种牧草收割机械普遍采用的切割器有往复式和回转式两种。回转式切割机属无支承切割，不产生堵塞现象，更换刀片简易。本次设计的双圆盘式割草机，选用回转式切割器，对牧草的适应性强，特别适应于稠密、倒伏和缠连的牧草，工作平稳，生产率高。设计的双圆盘割草机有以下几个特点:一、该机具由小四轮拖拉机前悬挂作业，主要有挂接、升降、传动、切割等机构组成，设计简单，结构紧凑;二、本机具的升降由拖拉机液压手柄操纵，通过升臂、钢丝绳、滑轮等机构提升拉杆，完成机具的水平升降;三、动力由拖拉机飞轮传递，机具皮带轮布置在两个齿轮箱中间，两个皮带圆盘式割草机的设计2轮处在同一个平面内，结构更紧凑;四、机具前端设置了防护栏和防护罩，刀盘制作成碟形，使刀片旋转时与地面成一定角度，且脱落或飞出时不致伤人，安全可靠。本次设计主要完成了圆盘式割草机的总体方案的选型，切割器的总体设计，传动系统的设计，主要零部件的设计与校核。关键词:圆盘切割器；牧草；收割机Designofdouble—diskcutterwithrotarycutterAbstractGrazingharvestingisanimportantPartoftheProductionofgrassindustry,improvingforageharvestingmechanizationlevelandProductivityisvitaltoensurethegrassindustryabundantharvest.ThecutterisimportantworkingPartofvariousharvestingmachinery.AtPresent，variousforageharvestingmachinerycommonlyusetwokindsofcutterbar---reciprocatingandrotary.TherotarycuttingmachinewithoutsupportcuttingandthereisnoPluggingPhenomenonandreplacingbladeeasily.Thistopicresearchesanddesignsdouble—diskcutterwithrotarycutter,theadaptabilityofforage,particularlyadaptedtothedense,lodgingandevenwrappedaroundthegrass，workingstably,outputhighly.Inthispaper,researchesandanalysesforeignforagegrassesharvester,usingtheprincipleandmethodofmachinedesign,theoptimaldesignofmachine，thedevelopmentofthedouble---diskgrasscutterhasinnovationspotsasfollowing:1.Themachinewithasmallfour-wheeltractorhangingbeforeit.Mainly圆盘式割草机的设计3includingtheofhoist、articulate、movement、transmission、cuttingandotheragencieswithsimpledesign、compactstructure、strongadaptabilityandlowcost.2.Liftofthemachineiscontrolledbyhydraulichandleofthetractor,throughthelifting---arm，steelrope,Pulleyandsoonachievingtheliftinghorizontally.3.Powertransmissiondependsontheflywheelofthetractor.TheretwostrapPulleysbetweenthetwogear-boxes,andthetwostrapsPulleysarePlacedonthesamePlanewithmorecompactstructure.4.TherearefencingandProtectivemaskattheforesideofthemachine,andthebladewasmadeintotheshapeasdishsothatthebladerotatingatacertainangleontheground,andflysafelyandreliablyoffwithoutwounding.InthisPaperanalysis’sandteststheforceofthePrincipaltransmissionParts.BydoingExperiments,weknowthemachinehasthecharacteristicsofstrongapplicability、reasonablestructure、excellentcapability、highProductivityandsoon.Keywords:Double—diskcutter:grazing;harvester目录圆盘式割草机的设计..................................................1摘要...............................................................11割草机相关背景....................................................51.1研究背景........................................................................................................................51.2我国割草机的研究现状................................................................................................51.2.1割草机的组成........................................................................................................51.2.2割草机的分类........................................................................................................51.3割草机的发展方向........................................................................................................91.4本设计的目的、要求和意义......................................................................................102双圆盘割草机总体设计.............................................112.1本设计需要解决的技术问题.....................................................................................112.2收获对象对机械性能的要求......................................................................................112.3总体设计原则..............................................................................................................112.4要求达到的技术参数..................................................................................................112.5总体参数的确定..........................................................................................................12圆盘式割草机的设计42.6总体方案的确定..........................................................................................................123旋转式切割器的设计...............................................153.1割刀运动分析..............................................................................................................153.2割刀转速的确定..........................................................................................................163.3刀片数的确定..............................................................................................................173.4刀片伸出高度h...........................................................................................................173.5切割器主体部分设计..................................................................................................184主要工作部件的方案选择及相关参数的确定...........................194.1传动系统总体方案的确定..........................................................................................194.2动力参数设计..............................................................................................................194.2.1传动比分配..........................................................................................................194.2.2功率消耗.......