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1、摘要本设计基于各种脱粒机的结构，主要研究玉米脱粒机的传动系统的结构、工作原理，并在此依据基础上完成零部件的设计，并依据相关机械设计软件来完成零部件的设计。本着从经济性和实用性的角度出发，针对农业发展的需要设计出一种结构简单，工作效率高的玉米脱粒机。首先应该根据玉米盘的自身形状来展开初步设计，从而展开总体方案的传动设计。研究的主要内容基本包括玉米脱粒机构、电机的选择、带轮的结构设计。一般机械设计方法，通常多从总体方案开始，在总体方案中又首先从机构的分析开始，确定方案后再进行必要的设计计算和结构设计，最后以
2、完成的设备图纸和设计计算书作为整个设计计算的成果。为了减轻农民的劳动强度，提高农业作业的机械化程度，填补农业机械的一项空白，针对玉米盘本身特征进行设计，在脱粒时钉齿滚筒高速旋转，使玉米在机箱壁和罗底之间不断被钉齿打击，而这个作用又使玉米棒之间不断互相碰撞，以达到籽盘分离，然后净粒，完成脱粒。关键词：玉米脱粒机；钉齿滚筒；传动系统；带轮AbstractThisdesignbasedonvariouskindsofthreshingstructure,themainresearchcornoftransmi
3、ssionsystemofseparatingthrasherstructure,workingprinciple,andonthisbasistocompletepartsdesignbasedon,andaccordingtotherelevantmechanicaldesignsoftwaretocompletepartsdesign.Inlinewithfromthepointofviewofeconomyandpracticability,accordingtotheneedsofthedev
4、elopmentofagriculturedesignedakindofsimplestructure,highefficiencyofthecorn26threshers.Firstshouldaccordingtotheirownshapeofcorndishonthepreliminarydesign,andoperatetheoverallschemeofthetransmissiondesign.Themaincontentsincludecornthreshinginstitutions,b
5、asicmotorselection,withthestructuredesignofthewheel.Generalmechanicaldesignmethod,usuallyfromtheoverallschemestarted,theoverallschemeandtheanalysisofthefirstfromtheagencybegan,determinetheschememorenecessarydesigncalculationandstructuredesign,andfinallyt
6、ocompleteequipmentdrawingsanddesigncalculationsasthewholedesigncalculationresults.Inordertoreducethefarmerlaborintensity,improveagriculturalmechanizationofhomework,fillagapofagriculturalmachinery,aimingatthecharacteristicsofthecorndiskitselfdesign,whenth
7、ethreshingnailtoothrollerhigh-speed,makethecornincasewallconstantlywasnailedtoothbetweenblow,buttheeffectandthecobcollisionbetweenthatconstantly,inordertoachievetheseeddishseparate,thennetgrain,completethethreshing.Keywords:cornseparatingthrasher;Nailtoo
8、throller;thetransmissionsystem;Beltround目录1、绪论…………………..…………………................................…..............................................11.1研究内容的现状………..………………………………........................………………..11.2选题意义…………………………………
