《小型荔枝大小筛选机的设计》-毕业论文.docVIP

PAGE 摘 要 毕业设计是因为南方果农对自己荔枝的大小品级筛选的需求而确定的。主要任务是是果园可用的小型荔枝大小筛选机的设计。 本文详述在直线振动筛的基础上进行改造设计，从而满足果园用小批量的筛选，对其中一部分进行了设计计算。重点是筛选机的筛网，驱动系统进行设计及校合。 本文的设计是以直线振动筛为基础的，使其能更便捷，体积更小可以更适合果园用的小型机械。筛选网可以对荔枝进行大小筛选，驱动系统可以刚好适应于果园用。 本文对筛网的设计是对荔枝的大小品级进行大量研究后的研究的，更符合实际。结构简单，动力驱动系统用家用电源。使筛选机更符合小批量的生产，更适应于家庭作坊使用 关键词：荔枝大小筛选机；筛网；驱动系统 Abstract Graduation themes from the South litchi fruit of their low-volume screening to determine the needs of the subject. Main task is available for small family size filter Machine litchi.  This article details the linear vibrating screen to transform the basis of design, to meet the domestic small-volume screening, part of which the design calculations. Focus on screening machine screen, drive system design and intercourse.  This design is based on the basis of linear vibrating screen, make it more convenient and more suitable for smaller and smaller machines for small home. Litchi filter mesh size can be selected, the drive system can be exactly adapted to home.  This paper is designed to screen the size grade of litchi extensive research studies, more realistic. Simple structure, power drive systems for domestic power supply. Screening more to small-volume production, more suitable for home workshop use Keywords: Lychee size screening machine;screen; drive system 目 录 摘要…………………………………………………………………1 Abstract…………………………………………………………….2 1 绪论………………………………………………………………7 1.1 引言…………………………………………………………7 1.2 筛选机国内外的现状及发转趋势……………………………...7 1.2.1筛选机的发展概况………………………………………7 1.2.2筛分机械的应用现状 …………………………………..9 1.23筛分机械的发展方向 …………………………………10 1.3 筛选机的分类及各自的特点………………………………11 2. 筛选机的工作原理及结构组成 ……………………………..14 2.1筛选机的工作原理…………………………………………..15 2.2筛选机基本结构……………………………………………..15 2.2.1筛箱………………………………………………….15 2.2.2激振器……………………………………………….15 2.2.3支承装置和隔振装置 ……………………………..16 2.2.4 传动装置…………………………………………….16 3. 动力学基本理论………………………………………………17 4筛面物料运动理论 …………..…………………………………22 4.1筛上物料的运动分析……………………………………..…22 4.2正向滑动……………………………………………………23 4.3反向滑动……………………………………………………25 4.4跳动条