资源描述:
《圆盘割草机的毕业设计》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
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,
2、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?diskcutterwit
3、hrotarycutterAbstractGrazingharvestingisanimportantPartoftheProductionofgrassindustry,improvingforageharvestingmechanizationlevelandProductivityisvitaltoensurethegrassindustryabundantharvest.ThecutterisimportantworkingPartofvariousharvestingmachinery.AtPre
4、sent,variousforageharvestingmachinerycommonlyusetwokindsofcutterbar---reciprocatingandrotary.TherotarycuttingmachinewithoutsupportcuttingandthereisnoPluggingPhenomenonandreplacingbladeeasily.Thistopicresearchesanddesignsdouble?diskcutterwithrotarycutter,th
5、eadaptabilityofforage,particularlyadaptedtothedense,lodgingandevenwrappedaroundthegrass,workingstably,outputhighly.Inthispaper,researchesandanalysesforeignforagegrassesharvester,usingtheprincipleandmethodofmachinedesign,theoptimaldesignofmachine,thedevelop
6、mentofthedouble---diskgrasscutterhasinnovationspotsasfollowing:1.Themachinewithasmallfour-wheeltractorhangingbeforeit.Mainlyincludingtheofhoist、articulate、movement、transmission、cuttingandotheragencieswithsimpledesign、compactstructure、strongadaptabilityandl
7、owcost.2.Liftofthemachineiscontrolledbyhydraulichandleofthetractor,throughthelifting---arm,steelrope,Pulleyandsoonachievingtheliftinghorizontally.3.Powertransmissiondependsontheflywheelofthetractor.TheretwostrapPulleysbetweenthetwogear-boxes,andthetwostrap
8、sPulleysarePlacedonthesamePlanewithmorecompactstructure.4.TherearefencingandProtectivemaskattheforesideofthemachine,andthebladewasmadeintotheshapeasdishsothatthebladerotatingatacertainangleontheground,andflys