麦田免耕施肥播种机设计说明书.doc -- 6 元

毕业设计论文麦田免耕施肥播种机设计Designofthewheatfieldexemptsplowsfertilizerandseeddrills学生姓名学院名称机电工程学院专业名称机械设计制造及其自动化指导教师2008年6月2徐州工程学院毕业设计论文I摘要保护生态环境，实现可持续发展现在已经成为我们国家在谋求经济快速发展过程中所要遵循的基本方针。面对土地沙漠化面积的迅速扩大和沙尘暴的肆虐一年更盛一年，国家除了实施大规模的防沙治沙工程和全面退耕还草的重大举措之外，在农业方面则一直在积极倡导和推广应用保护性耕作技术。小麦免耕播种机采用的是动力圆盘断草、与动力圆盘贴合的夹持式开沟器同位分层播种在已覆有秸杆的地中能一次性完成行方向秸杆切断、同位分层播种和中后镇压等多项作业的保护性耕作机具。本文设计了一种新型免耕播种机，采用无动力双圆盘式开沟器，机具结构简单，使用方便，具有碎土作用强，不缠草以及具有播种深度精度高，播种均匀，一次作业能完成6行播种，利于种子的生长，满足在免耕播种后，对麦田行向杂草予于锄除。关键词保护性耕作机具开沟器免耕播种机徐州工程学院毕业设计论文IIAbstractEcologicalenvironmentprotectionandsustainabledevelopmentbecomethebasicpolicyofourcountrywhichnowintheeconomyfastdevelopingprocessmustbefollowed.Facingthelanddesertificationareasrapidexpansionandthesandstorm,thecountrynotonlyimplementthelargescaleagainstsandtocontrolthesandstheprojectbutalsotakebackfromagriculturegrasssmajorstepcomprehensively,positivelyhasbeeninitiatingandpromotestheapplicationprotectionculivationtechniqueintheagriculturalaspect.Thewheatexemptsplowstheseedertouseisthepowerdiscbreaksthegrassandwithpowerdiscfittingclamptypefurrowopenerisotopiclaminationsowingseedsafterduplicatehadinthestrawplacecandisposableformalinethedirectionstrawcutoff,isotopiclaminationsowingseedsandthesuppressionandsoonmanyworkprotectiontillageimplements.Idesignedanewexemptsinthewheatfieldwork.Usingthenopowerdoublecirculardisctypefurrowopener,thestructureissimpleandeasytobeoperated,whichbrokeearthstronglyanddoesnotentanglethegrass,aswellashasthesowingdepthprecisiontobehigh,sowingseedsiseven,Thecatchernotillageplantercancomplete6sowingseeds,theseedcangrowsbetter.KeywordsProtectiontillagemachineFurrowopenerExemptsplowstheseeder徐州工程学院毕业设计论文I目录1绪论......................................................................11.1引言...................................................................11.2背景及原理介绍.........................................................11.3论文的主要工作和意义...................................................21.4总体方案的确定.........................................................32动力性能的设计与校核......................................................42.1丰收180型拖拉机的配套适应性计算.......................................42.2拖拉机液压提升能力计算.................................................62.3机组操向稳定性计算.....................................................72.4坡道极限倾翻角计算.....................................................83主要部件的设计...........................................................103.1轴的设计..............................................................103.1.1传动轴的设计......................................................103.1.2轴的计算与校核....................................................113.1.3键的选择与校核....................................................173.2链轮的设计............................................................193.2.1链轮的计算........................................................193.2.2链轮的材料........................................................263.3链的选择..............................................................263.4开沟器的设计..........................................................263.5侧传动箱的设计........................................................273.5.1链轮材料的选择....................................................293.6播种部分的传动设计....................................................293.6.1传动方式的选择....................................................293.6.2链传动比..........................................................303.7播种施肥器总成........................................................304总结.....................................................................31致谢.....................................................................32参考文献...................................................................33附录........................................................错误未定义书签。附录1....................................................错误未定义书签。附录2....................................................错误未定义书签。