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1毕业设计说明书中文摘要旋耕机的设计摘要我国对旋耕机的研制始于20世纪50年代末�初期主要研制与手扶拖拉机配套的旋耕机�后来研制出与中型轮式拖拉机配套的旋耕机�70年代初完成了与当时国产的各类拖拉机配套的系列旋耕机的设计�并使之得到了推广应用�到80年代�与手扶拖拉机配套的旋耕机由专用型发展到兼用型�由于手扶拖拉机配套发展到与轮式及履带式拖拉机配套。旋耕机在我国的发展经历了单机研制、发展系列产品、新产品开发和换代3个阶段�随着新的种植、耕作农艺的发展和推广�在旋耕机基础上还研制出了多种用途的联合复式作业机。新系列旋耕机采用的新型旋耕刀�综合了合理的速度参数、宽幅和复式作业功能�采用旋耕机基础件组合式结构�可组装在多种机型上�满足不同的用途与农艺要求。为了提高旋耕机工作效率�符合农业发展要求�本设计为宽幅大功率旋耕机�如果按传统方法设计�由于刀轴跨度大�传动不平稳�致使刀轴寿命大大降低�所以我采用三箱传动方案�将拖拉机输入的动力传至刀轴�刀轴受力均衡�传动平稳�刀轴使用寿命提高。关键词农机旋耕机三箱传动2毕业设计说明书外文摘要ThedesignofrotarycultivatorofthreecasestransmissionAbstractMyrotarycultivatorofthe1950sandthe20thcenturybeganwiththeendoftheinitialdevelopmentandthemainwalkingtractorsupportingrotarycultivatorandsubsequentlydevelopedwithmedium-wheeledtractorsupportingrotarycultivator;701990swasmadeinChinawiththecompletionofthevariousseriesofrotarycultivatortractorssupportingthedesign,andhasbeenpromotingtheapplication;Tothe1980s,fromtherotarycultivatorandwalkingtractorsupportingdedicatedtothedevelopmentofbothtype,andbysupportingthedevelopmentofthewalkingtractorwithwheeledandtrackedtractorsmatching.Rotarycultivatorinthecountry'sdevelopmenthasasingleresearchanddevelopmentseriesproducts,newproductdevelopmentandupdatingofthreestages,withnewcultivation,thedevelopmentandpromotionoffarmingtechniques,rotarycultivatorbasisalsodevelopedamulti-purposejointcompoundoperationsaircraft.Anewseriesofrotarycultivatornewrotaryknife,areasonablespeedintegratedparameters,andthebreadthofoperationalfunctions,theintroductionofrotarycultivatorbasisofmodularstructure,assemblyinavarietyofmodels,andtechniquestomeettherequirementsofdifferentuses.Inordertoimprovetheworkefficiency,Withagriculturaldevelopmentrequirements,Thedesignforthewidehigh-powerrototiller,ifmethod,themethodoftraditionaldesign,Duetothelargespan,transmissionshaft,causinginstabilitycutterlifegreatlyreduced.soIusethreecasesoftransmission3scheme,separatetheinputpoweroftractortotheshaft,knifeshaftbearingbalanced,stabletransmission,improvetheknifeshaft'slife.Keywordsfarmmachineryrotarycultivatorthreecasestransmission4目录1绪论......................................................11.1课题要求................................................11.2旋耕机的研究现状与发展趋势..............................11.2.1国内旋耕机的发展现状..................................11.2.2国外旋耕机的发展现状..................................11.2.3旋耕机的发展趋势......................................22旋耕机的总体设计..........................................32.1旋耕机的工作原理........................................32.2拖拉机的选择............................................32.3旋耕机与拖拉机的挂接....................................42.4旋耕机与拖拉机的配置型式................................42.5传动方案设计............................................52.5.1设计方案分析.........................................52.5.2机构运动分析与动力参数选择与计算.......................52.5.3传动装置的运动和动力参数计算..........................653齿轮设计与校核............................................83.1齿轮的材料..............................................83.2分传动箱齿轮的设计与校核................................83.2.1齿轮设计参数..........................................83.2.2设计计算..............................................83.2.3参数确定..............................................93.2.4齿轮校核.............................................103.3中间箱齿轮的设计与校核.................................123.3.1按齿面接触强度设计...................................123.3.2锥齿轮校核...........................................134轴的设计与校核...........................................164.1轴的材料...............................................164.2轴1的设计计算.........................................164.2.1按转矩初步估算轴径...................................164.2.2轴的受力分析.........................................164.3轴2设计与校核.........................................184.3.1按转矩初步估算轴径...................................1864.3.2轴的受力分析.........................................194.3.3轴的强度校核.........................................194.4轴3的设计与校核.......................................204.4.1按转矩初步估算轴径...................................204.4.2轴的受力分析.........................................214.4.3轴的强度校核.........................................214.5轴4的设计与校核.......................................224.5.1按转矩初步估算轴径...................................224.5.2轴的受力分析.........................................224.5.3轴的强度校核.........................................224.6轴5的设计与校核.......................................234.6.1按转矩初步估算直径...................................234.6.2轴的受力分析.........................................234.6.3轴的强度校核.........................................245工作前的安装与调整.......................................256旋耕机使用技术要点.......................................26结论......................................................287参考文献.................................................29致谢......................................................30山西农业大学工学院毕业设计11绪论中国农业正处于从传统农业向现代农业转变的关键时期。在这一进程中�农业机械化的作用越来越显著。其中旋耕机主要用于农田栽植、播种前的耕整地作业。耕后�地表平整、松软、细碎�能够满足精耕细作的农艺要求。在潮湿地或水田上工作时�可减少拖拉机轮子的下陷和打滑丢转现象。旋耕机的发展大幅提高了农业生产效率�旋耕机械在我国已被广泛使用�正逐步发展成为农业机械的一个重要门类。我国现有旋耕机产品系列虽然在名义上可以配套58.8~73.5kw�80~100马力�拖拉机�但实际上因受传动系统强度及结构尺寸、机架结构强度的局限�配套合理范围仅达48kw