吴旺旺论文排版.doc

题目: 葵花籽重力分选机设计姓名:吴旺旺班级学号: 07080541 指导教师:魏天路毕业论文(设计)用纸佳木斯大学教务处第 I页摘要谷物清选是收获后不可缺少的环节收获后的谷物中不仅包含饱满和成熟的籽粒而且还有机械损伤破碎和不成熟的谷粒此外还包含有许多的杂质如草籽泥沙断穗硬壳等等因此无论留作种子还是其他用途,在此理论基础作了分析,通过对振动筛机构的设计,实现了他在农业机械领域的应用实践。本文着重对葵花籽重力清选机构做了简单的分析和研究,讨论了重力清选机的发展历程。同时,对国外大型清选机做了初步的分析。这里主要是针对葵花籽重力清选机清选机的设计进行的,从整体布局到个别零件的选用都进行了改良,不仅包括筛箱的设计,支撑方案的设计,还包括轴,带轮,偏心块等零件的设计。采用单电机带动,带轮传动来使得两个偏心块同步,采用了座式结构,使得结构更加安全,占地面积更小。机架和筛体为主要部件,采用高强度和高冲击韧性的钢材,不仅仅提高了整机的耐用度,还减轻了整个结构的重量,设计中还包括对连接和固定件的选用,采用销连接和部分螺钉连接,机架采用焊接。通过对以前清选机构的借鉴,采用一级筛分,负压吸风式,适用于对不同密度的谷物杂质进行清选。关键词:清选重力葵花籽机架筛体毕业论文(设计)用纸佳木斯大学教务处第 II页 Abstract Grain Cleaning is an essential part of post-harvest grain harvest not only contains the full and mature but also mechanical damage of grain crushing and immature grains also contain many impurities, such as seeds and nuts of sediment off ear Etc. Therefore, both reserved for seed or for other purposes, the basis of this theory are analyzed, through the vibrating screen body design, implementation of his application in the practice of agricultural machinery. This article focuses on the gravity of the sunflower seed cleaning body todoa simple analysis and research, discuss the gravity of the development process of cleaning machine. Meanwhile, foreign large cleaning machine todoa preliminary analysis. This is mainly gravity cleaning machine for sunflower seed cleaning machine design, from the overall layout to the choice of the ponents have been improved, including not only the design of screen box, supporting the design, including shaft, pulley, Eccentric block and other parts of the design. Single-motor drive, pulley drive to make the synchronization of two eccentric blocks, using a seat structure, making the structure more secure, the area is smaller. And sieve frame as the ponent, high strength and high impact toughness of steel, not only improve the overall durability, but also reduces the weight of the whole structure, the design also includes the selection of connections and fixtures, using Pin connection and so