履带式微耕机的结构设计（多配件） 摘要 在农业科技创新发展与城镇化快速发展的共同推动下，我国农村经济呈现出良好发展势头，社会经济发展水平不断提升的同时农业产业结构也出现了巨大变化。受城镇化的影响，大量农村劳动力逐渐转移至城市地区，导致农村劳动力资源不断减少，难以满足现代农业生产发展的需求，难以保证生产水平。因此，迫切需要一种全新的、小型化的农业设备提供灵活的、便捷的生产辅助，微耕机应运而生并表现出良好的发展势头。 现有微耕机多为柴油或汽油机提供动力，在工作的同时会产生震动、噪声，环境污染等一系列问题，因此本文设计将以电力作为动力，克服以上缺点，并采取履带行进的运动方式，提高微耕机的环境适应能力。 本文采用模块化的方法，将行进运动和作业运动分解，在结合现有微耕机的结构与原理的基础上，使用和CAD等软件，完成了一种履带式微耕机的结构设计，并对驱动轮，旋耕刀等零部件进行了校核与干涉分析，保证了作业部件的强度与可靠性，最后对微耕机的发展趋势做了简单阐述。 本文设计的履带式微耕机结构简单清晰，易于操作，但同时，作为农用机械，没有设置很高的部件参数精度。 关键词结构设计；微耕机；载荷分析；发展趋势 Structure desig
n of crawler micro tiller (multi-accessories) Abstract Drive
n by the i
n
novatio
n a
nd developme
nt of agricultural scie
nce a
nd tech
nology a
nd the rapid developme
nt of urba
nizatio
n, Chi
na's rural eco
nomy has show
n a good mome
ntum of developme
nt. With the co
nsta
nt improveme
nt of the level of social a
nd eco
nomic developme
nt, the agricultural i
ndustrial structure has also u
ndergo
ne great cha
nges. U
nder the i
nflue
nce of urba
nizatio
n, a large
number of rural labor force is gradually tra
nsferred to urba
n areas, resulti
ng i
n the co
nti
nuous decrease of rural labor resources, which makes it difficult to meet the
needs of moder
n agricultural productio
n developme
nt a
nd e
nsure the level of productio
n. Therefore, there is a
n urge
nt
need for a
new a
nd mi
niaturized agricultural equipme
nt to provide flexible a
nd co
nve
nie
nt productio
n assista
nce. Therefore, the micro-cultivator emerges at the right mome
nt a
nd shows a good mome
ntum of developme
nt. Most of the existi
ng micro cultivators provide power for diesel or gasoli
ne e
ngi
nes, which will produce a series of problems such as vibratio
n,
noise a
nd e
nviro
nme
ntal pollutio
n while worki
ng. Therefore, the desig
n of this paper will take electricity as power to overcome the above disadva
ntages, a
nd adopt the track moveme
nt mode to improve the e
nviro
nme
ntal adaptability of micro cultivators. This article adopts the method of modularizatio
n, will march moveme
nt a
nd moveme
nt decompositio
n, i
n combi
natio
n with the existi
ng o
n the basis of the structure a
nd pri
nciple of micro tillage machi
ne, usi
ng Pro/E a
nd CAD software, completed a caterpillar decay tillage machi
ne structure desig
n, a
nd the drive wheels, rotary tillage blade parts, such as check a
nd i
nterfere
nce a
nalysis, to e
nsure the stre
ngth a
nd reliability of the operati
ng parts, fi
nally the developme
nt tre
nd of micro tillage machi
ne briefly. The crawler micro cultivator desig
ned i
n this paper has simple a
nd clear structure a
nd is easy to operate. However, as a
n agricultural machi
ne, it does
not have high precisio
n of compo
ne
nt parameters. Keywords Structural desig
n, micro tiller, load a
nalysis, developme
nt tre
nd 目录 摘要I Abstract II 第1章绪论1 1.1课题研究背景及研究的目的与意义1 1.1.1研究背景1 1.1.2研究目的与意义1 1.2微耕机国内外研究现状分析2 1.2.1国外研究现状2 1.2.2国内研究现状3 1.3研究的主要内容和方法4 1.4基本设计参数4 1.5本章小结5 第2章履带式微耕机总体方案设计6 2.1履带式微耕机的工作原理6 2.2履带式微耕机的工作场景7 2.3微耕机成型机类型比较及选择7 2.3.1柴油、汽油微耕机7 2.3.2新能源微耕机8 2.3.3成型机类型的确定8 2.4本章小结8 第3章履带式微耕机的结构设计9 3.1履带底盘的设计9 3.1.1履带受力情况9 3.1.2履带速度分析10 3.1.3履带环接地长度计算10 3.1.4电机选取与驱动轮动力半径的计算11 3.1.5支撑轮的设计12 3.1.6履带预紧力计算13 3.2旋耕结构的设计13 3.2.1旋耕刀的选取及安装法14 3.2.2旋耕刀轴设计15 3.2.3基于微耕机功耗的计算减速机选取16 3.3接地比压计算17 3.4旋耕模块组合设计17 3.5虚拟装配18 3.5.1虚拟样机技术的发展与应用18 3.5.2履带式微耕机的虚拟装配设计19 3.6本章小结20 第4章关键零部件的载荷分析21 4.1有限元分析法21 4.2旋耕弯刀的载荷分析22 4.3履带驱动轮的载荷分析23 4.4本章小结24 第5章产品发展趋势分析25 5.1研究背景25 5.2农业需求的转变25 5.3产品发展趋势25 5.4本章小结26 结论27 致谢28 参考文献29 附录A 31 附录B 47