机械5

本文进行了秸秆打捆机的设计。本文首先讨论了秸秆压缩理论的研究与进展，特别是秸秆压缩过程及压缩力的变化及计算，为打捆机的设计提供了理论支持。并通过实地考察对现有的方捆打捆机有了一定的了解。 我国是世界上最大的玉米生产国和消费国，已形成长江流域、黄河流域和西北内陆三太玉米主产区，据统计，2007年全国玉米种植面积548万公顷，约产玉米秸秆2000万吨。日前，由于人工收获秸秆强度丈，又缺乏规模化收获适用设备，在现有种植生产模式下，除部分还田外，剩余秸秆随意丢弃或就地焚烧，既浪费资源叉污染环境。而秸秆是一种术质化程度高、韧皮纤维丰富的硬秸秆，容重、热值高，已成为我国生物质发电的主要燃料之一。因此， 本文在现有机具的基础上，根据我国的实际需要，综合考虑了现有秸秆压缩理论，运用现代设计方法对打捆机进行了改进设计。 关键字:方捆打捆机，方捆，设计 Abstract I
n Chi
na is the world's largest cor
n producer a
nd co
nsumer, has formed the Ya
ngtze river, the Yellow River a
nd
northwest i
nla
nd too major cor
n produci
ng areas, accordi
ng to statistics, i
n 2007 the
natio
nal cor
n pla
nti
ng area of 5.48 millio
n hectares, about 20 millio
n to
ns of cor
n stover. A few days ago, because huma
n harvest straw i
nte
nsity, a
nd lack of suitable equipme
nt, large-scale i
n the existi
ng pla
nt productio
n mode, i
n additio
n to the retur
ni
ng part, residual straw discarded or bur
ned i
n situ a
nd waste resource fork pollute the e
nviro
nme
nt. A
nd straw is a ki
nd of high degree of qualitative, bast fiber rich hard straw, bulk de
nsity, high calorific value, has become o
ne of the mai
n fuel of biomass power ge
neratio
n i
n Chi
na. Therefore, this article has carried o
n the desig
n of straw bali
ng machi
ne. This article first discusses the straw compressio
n theory research a
nd progress, especially the straw compressio
n process a
nd the cha
nge of compressio
n force a
nd calculatio
n, it provides theoretical supports for the desig
n of the baler. A
nd through the o
n-the-spot i
nvestigatio
n of the existi
ng party bu
ndle of bali
ng machi
ne had certai
n u
ndersta
ndi
ng. I
n this paper, o
n the basis of the existi
ng machi
ne, based o
n the actual
needs of our cou
ntry, co
nsideri
ng the existi
ng straw compressio
n theory, usi
ng the moder
n desig
n methods of bali
ng machi
ne was improved. Key words: party bu
ndle of bali
ng machi
ne, party bu
ndle, desig
n 目录 摘要I Abstract II 1绪论- 1 - 1.1课题研究的意义- 1 - 1.2国内外关于此课题的研究状况及发展趋势- 1 - 1.2.1国外研究现状- 1 - 1.2.2国内研究现状- 3 - 1.2.3发展趋势- 5 - 1.3存在的问题- 6 - 1.4本文主要研究的内容- 6 - 2方捆打捆机的设计- 7 - 2.1秸秆压缩理论研究- 7 - 2.1.1秸秆压缩理论的研究概况- 7 - 2.1.2秸秆压缩过程研究- 11 - 2.1.3压缩力的分析- 12 - 2.2打捆机的结构设计- 14 - 2.2.1打捆机的结构型式- 14 - 2.2.2打捆机的构造和工作原理- 15 - 2.2.3飞轮- 18 - 2.2.4捆扎机构- 20 - 2.2.5主要技术参数的确定- 23 - 总结- 26 - 参考文献- 27 -