小型马铃薯联合收获机设计 摘要 本文主要对4TU-2型马铃薯联合收获机的起获与分离系统进行研究，并对该机挖掘与旋齿的主要部件和机构进行系统地设计计算和理论探讨。 马铃薯收获机总体结构设计：总体结构分为传动装置，分离装置和挖掘装置。传动装置由万向联轴器、链传动传动组成；分离装置通过连杆机构摆动栅条分离筛实现马铃薯和土壤杂草的分离；挖掘铲由独立铲片、铲片固定板和角度调节机构组成。 整机结构主要由拖拉机减速器、抖动轮、电动机、机架、挖掘铲、传动链、地轮构成。由拖拉机产生动力通过减速器和带轮将需要的动力传递到链轮上，链轮带动链条，从而带动分离装置运动，将挖出的马铃薯运送到收集箱，同时通过抖动轮的作用使得马铃薯和泥土杂草分离。 本研究内容摘要： (1)马铃薯收获机总体结构设计。 (2)马铃薯收获机工作性能分析。 (3)电动机的选择。 (4)对马铃薯收获机的传动系统、执行部件及机架设计。 (5)对设计零件进行设计计算分析和校核。 (6)运用计算机辅助设计，对设计的零件进行三维建模。 (7)绘制整机装配图及重要部件装配图和设计零件的零件图。 关键词：马铃薯收获机；拖拉机；马铃薯；机械设计 The Desig
n of Potato Harvester Abstract This paper mai
nly researched the 4TU-2 potato harvester of the seized a
nd separatio
n system, discuss the calculatio
n a
nd theory of system desig
n a
nd the mai
n part of the machi
ne mi
ni
ng a
nd tooth a
nd mecha
nism.The overall structure of potato harvester desig
n: the overall structure co
nsists of drivi
ng device, separati
ng device a
nd a diggi
ng device. The drivi
ng device is composed of a u
niversal coupli
ng, chai
n tra
nsmissio
n compo
ne
nt; separatio
n through the co
n
necti
ng rod mecha
nism of swi
ng bar scree
n to achieve the separatio
n ofweeds i
n potato a
nd soil; mi
ni
ng shovel shovel, shovel by i
ndepe
nde
nt film fixi
ng plate a
nd a
ngle regulati
ng mecha
nism. The structure is mai
nly composed of tractor retarder, jitterwheel, motor, rack, a diggi
ng shovel, tra
nsmissio
n chai
n,wheel. The tractor to ge
nerate power through a speed reducer a
nd a beltwheelwill
need power delivered to the chai
nwheel, chai
nwheel drives the chai
n, thus separati
ng device moveme
nt, to carry out the potatoes i
nto the collectio
n box, at the same time by shaki
ngwheel fu
nctio
n caused theweeds of potato a
nd soil separatio
n. Abstract this thesis research: (1) the overall structure desig
n of potato harvester. (2) a
nalysis of potato harvesterworki
ng performa
nce. (3) the choice of motor. (4) o
n the tra
nsmissio
n system, potato harvester executive compo
ne
nts a
nd frame desig
n. (5) the desig
n of compo
ne
nts for the desig
n calculatio
n a
nd check. (6) the use of computer aided desig
n, 3D modeli
ng o
n Desig
n of parts. (7) to draw the assembly drawi
ng a
nd parts assembly diagram a
nd parts diagram desig
n. Keywords: potato harvester, tractor, potato, mecha
nical desig
n 目录 摘要II Abstract III 第一章绪论1 1.1课题研究意义1 1.2研究内容2 1.3研究方法3 第二章马铃薯收获机总体方案的设计4 2.1整体布局的设计4 2.2工作原理5 2.3主要性能参数5 第三章传动比的确定与减速器的选择6 3.1传动比的确定6 3.2减速器的选择6 第四章机械传动部分计算8 4.1功率的计算8 4.2传动比8 4.3链轮之间的链传动设计9 4.3.1设计要求9 4.3.2设计过程9 4.4轴的设计11 4.4.1链轮上力的计算11 4.4.2材料12 4.4.3计算轴的最小直径12 4.4.4轴的结构设计12 4.5轴的校核13 4.6键的校核14 4.7轴承的校核15 第五章主要部件的设计17 5.1挖掘部件的设计17 5.2挖掘铲的设计17 5.3挖掘装置的设计18 5.3.1挖掘铲的构成18 5.3.2挖掘铲的设计18 5.4分离部件的设计19 5.5地轮和机架的设计20 5.5.1地轮的设计20 5.5.2机架部分的设计20 第六章三维图的设计21 结论30 参考文献31 致谢32