设计简介
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。
本论文研究内容摘要：
(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 Design of Potato Harvester
Abstract
This paper mainly researched the 4TU-2 potato harvester of the seized and separation system, discuss the calculation and theory of system design and the main part of the machine mining and tooth and mechanism.The overall structure of potato harvester design: the overall structure consists of driving device, separating device and a digging device. The driving device is composed of a universal coupling, chain transmission component; separation through the connecting rod mechanism of swing bar screen to achieve the separation of weeds in potato and soil; mining shovel shovel, shovel by independent film fixing plate and angle regulating mechanism.The structure is mainly composed of tractor retarder, jitter wheel, motor, rack, a digging shovel, transmission chain, wheel. The tractor to generate power through a speed reducer and a belt wheel will need power delivered to the chain wheel, chain wheel drives the chain, thus separating device movement, to carry out the potatoes into the collection box, at the same time by shaking wheel function caused the weeds of potato and soil separation.
Abstract this thesis research:
(1) the overall structure design of potato harvester.
(2) analysis of potato harvester working performance.
(3) the choice of motor.
(4) on the transmission system, potato harvester executive components and frame design.
(5) the design of components for the design calculation and check.
(6) the use of computer aided design, 3D modeling on Design of parts.
(7) to draw the assembly drawing and parts assembly diagram and parts diagram design.
Key words: potato harvester, tractor, potato, mechanical design
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
