毕业设计（论文）-苹果分选机机械系统设计（全套图纸）.doc

设计说明书

题目: 苹果分选机机械系统设计设计
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摘要
最近几年随着人民生活水平的提高和食品安全意识的提高,国内外引进的水果品种愈来愈多,因此能否对水果无损分级和装箱,不但关系到广大消费者的食用安全和能否满足消费者对优质安全水果的需求,而且也将大大影响水果产业的出口贸易,提高我国水果的市场竞争力,将很大程度上促进我国水果产业的发展和农民收入的增加。本课题主要设计一种称重式苹果分级生产线的机械系统设计,它克服了目前电子称重式水果分选机存在的问题和不足,提出以苹果重量作为分级标准,实现水果自动分级、卸料。按重量分级法来保证苹果托盘与苹果间不存在相对运动,避免对水果造成严重的机械损伤。
关键词:苹果,分级,生产线
全套图纸加153893706
Abstract
In recent years with the increase and food safety awareness of people's living standards improve, more and more fruit varieties introduced at home and abroad, so to lossless grading and packing of fruit, not only in relation to the consumers of food safety and can meet consumer demand for the quality and safety of fruit, but will also significantly affect the fruit industry's export trade, to improve China's fruit petitiveness, will largely increase the development of fruit industry in China and the e of farmers. This paper design a weighing type apple grading production line of mechanical system, the existing electronic weighing type fruit grading machine problems and the insufficiency, proposed to Apple's weight as grading standards, to achieve discharge automatic grading of fruits. According to the weight grade method to ensure the apple tray and apple does not exist between the relative motion, to avoid mechanical damage serious on fruit.
Keywords: Apple;Classification;Production Line
目录
摘要 2
第一章前言 5
5
5
6
6
7
第二章苹果分选机机械系统的结构设计 11
11
11
托辊 12
电动机的选择 13
计算总传动比和分配传动比 15
传动动力系数 15
V带的选用 15
18
18
18
19
19
20
20
21
22
24
托辊轴的设计及强度校核 26
托辊轴强度计算 26
托辊轴的疲劳强度校核 27
托辊轴的接触应力校核 29
第三章总结和展望 31
致谢 32
参考文献 33
第一章前言
本课题主要设计一种称重式苹果分级生产线的机械系统设计,它克服了目前电子称重式水果分选机存在的问题和不足,提出以苹果重量作为分级标准,实现水果自