茶树修剪机的设计1

学士学位论文姓名：何元浩学号：201415310312指导教师：张兴蕾学院：机电工程学院专业：机械设计制造及其自动化完成日期：2016年4月26日学校代码：10904学士学位论文姓名：何元浩学号：201415310312指导教师：张兴蕾学院：机电工程学院专业：机械设计制造及其自动化完成日期：2016年4月26日毕业设计（论文）诚信责任书本人郑重声明：所呈交的毕业设计（论文），是本人在导师的指导下独立进行研究所取得的成果。毕业设计（论文）中凡引用他人已经发表或未发表的成果、数据、观点等，均已明确注明出处。尽我所知，除文中已经注明引用的内容外，本论文不包含任何其他个人或集体已经公开发表或撰写过的研究成果。对本文的研究做出重要贡献的个人和集体，均已在文中以明确方式标明。本人毕业设计（论文）与资料若有不实，愿意承担一切相关的法律责任。I摘要茶树修剪机是基于生产过程中茶树修剪的实际需要而设计的高效茶树修剪设备，主要用于茶树的深修剪和重修剪。本次设计的是手推式茶树修剪机，避免了背负式和手提式的负荷作业。整个设计经历了茶树修剪机总体、传动系统和机架等的设计过程。首先进行茶树修剪机的总体结构设计，包括设计步骤、设计构思和拟定传动方案；其次进入到零部件的选型和设计，依次包括汽油机的型号选择、普通V带传动系统的设计、刀片的设计、轴的设计校核以及机架的设计。其中，设计的弧形刀刃能锁紧茶树枝干，增加了切口的平整度，将对茶树的伤害降到最低；最后阶段进行了零件图和装配图的绘制工作。本次设计的茶树修剪机可以实现茶树的机械化修剪，能降低劳动强度，有效的提高了生产效率，保证鲜叶品质，符合清洁化规模生产的要求，降低了生产成本。关键词：茶树修剪机；传动系统；弧形刀片IIABSTRACTTeatreepruningmachineisdesignedbasedontheactualneedsoftheteatreepruningintheproductionprocessandhighteatreetrimmingequipment,mainlyfordeeppruningandheavypruningoftea.Thedesignofthepushteatrimmerscanavoidtheknapsackandhand-heldloadoperation.Thedesignexperienceoftheteatreetrimmersconsistofthetransmissionsystemandrackdesignprocessingeneral.Firstly，itneedstoconductoverallstructuraldesignoftheteatreetrimmers,includingthedesignsteps,designideasandthedevelopmentofthetransmissionscheme;Secondly，itisgoingontheselectionanddesignofcomponents,followedbygasolinemodeltoselecttheordinaryV-beltdrivesystemdesign,bladedesignaxisofthedesigncheckanddesignoftherack.Amongthem,thecurvedbladecanlockteatreebranchestoincreasetheflatnessoftheincision,thedesignwilldecreaseteatreedamagetoaminimum;Inthefinalstage,ithastogoonthedrawingofthepartsandassemblydrawings.Thedesignedteatreetrimmerscanbemechanizedpruningoftea,canalsoreducelaborintensity,improveproductionefficiency,atthesametime,itcanensurethequalityoffreshleaves,inlinewiththerequirementsoftheclean-scaleproductionandevenreduceproductioncosts.Keywords：Teatreetrimmers;Transmissionsystem;CurvedbladeIII目录摘要...............................................................................................................................IABSTRACT.....................................................................................................................II1绪论..............................................................................................................................11.1设计目的及意义................................................................................................11.2国内外发展现状...............................................................................................11.2.1国内发展现状........................................................................................11.2.2国外发展现状........................................................................................21.3设计的主要技术指标.......................................................................................32设计构思......................................................................................................................52.1设计步骤...........................................................................................................52.2机器的结构构思...............................................................................................52.3拟定传动方案...................................................................................................63零部件的选型和设计..................................................................................................73.1汽油机型号的选择............................................................................................73.1.1汽油机的功率计算................................................................................73.1.2选取的汽油机型号................................................................................83.2普通V带传动系统的设计...............................................................................83.2.1带Ⅰ的设计............................................................................................93.2.2带Ⅱ的设计..........................................................................................123.2.3带轮Ⅰ的设计......................................................................................133.2.4带轮Ⅱ的设计......................................................................................143.2.5带轮Ⅲ和Ⅳ的设计..............................................................................153.3刀片的设计.....................................................................................................153.3.1刀片材料的选择..................................................................................163.3.2刀片的结构设计..................................................................................163.3.3刀片加工路线的制定..........................................................................173.4轴的设计和校核.............................................................................................173.4.1轴Ⅰ的设计..........................................................................................173.4.2轴Ⅱ的设计..........................................................................................223.4.3轴Ⅲ的设计..............................................................