本科毕业设计（论文）通过答辩
Abstract
Straw is the mature crop stems and leaves (ear) part. Usually refers to wheat, rice, maize, potato, oil, cotton, sugarcane and other crops in the remaining part of harvest seeds. Products of crop photosynthesis more than half in the straw, straw is rich in nitrogen, phosphorus, potassium, calcium, magnesium and organic matter, it is a kind of multi-purpose renewable biological resources. Feed processing of straw, the first step should be the straw crushing or cutting short. Throw the feeding and the designing are the use of automation device, thereby saving manpower. The chopped straw can have multiple choices, in order to adapt to the different requirements of livestock. Feeding hold-down mechanism device in a unique design, realization of the feeding straw had more no blockage in the feeding roller is not produced, no broken too long too little phenomenon. The design of the main features are largely improve the processing ability and the degree of automation of the crusher. Keywords: straw crusher blade cutter broken section

本科毕业设计（论文）通过答辩
目 录
摘 要............................................................................................................................1
ABSTRACT................................................................................................................... 2 1. 概述...........................................................................................................................5 1.1 国内外研究现状................................................................................................. 5 1.2 秸秆加工机械存在的主要问题及发展趋势................................................... 6
5.3 链的设计........................................................................................................... 20 5.4 链轮的设计....................................................................................................... 21 5.5 喂入链主动轮轴的设计................................................................................... 22 6 常见的故障原因及排除方法..................................................................................27 7 结论..........................................................................................................................28 致 谢..........................................................................................................................29
1.4.1 设计内容.......................................................................................................7 1.4.2 技术要求.......................................................................................................8 1.5 设计的基本依据............................................................................................... 8
1.2.1 主要问题.......................................................................................................6 1.2.2 发展趋势.......................................................................................................6 1.3 1.4 设计的目的及意义........................................................................................... 7 设计内容及应达到的技术要求....................................................................... 7
1.5.1 功能设计思想...............................................................................................8 1.5.2 总体设计依据...............................................................................................8 2. 设计方案拟定...........................................................................................................9 3. 总体方案设计.........................................................................................................10 3.1 性能指标和技术参数....................................................................................... 10 3.2 主要工作部件结构设计................................................................................... 11 3.2.1 喂入装置的构成......................................................................................... 11 3.2.2 喂入辊工作分析.........................................................................................12 3.2.3 切碎长度及生产率.....................................................................................13 3.2.4 上喂入辊压紧机构.....................................................................................14 3.2.5 切碎器及其技术要求.................................................................................14 3.2.6 动刀.............................................................................................................15 3.2.7 定刀（底刀）.............................................................................................16 3.2.8 抛送装置.....................................................................................................16 3.3 机架和箱体的材料选择................................................................................... 16