履带式微耕机的结构设计

00装配图

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 design of crawler micro tiller
(multi-accessories)
Abstract
Driven by the innovation and development of agricultural science and technology and the rapid development of urbanization, China's rural economy has shown a good momentum of development. With the constant improvement of the level of social and economic development, the agricultural industrial structure has also undergone great changes. Under the influence of urbanization, a large number of rural labor force is gradually transferred to urban areas, resulting in the continuous decrease of rural labor resources, which makes it difficult to meet the needs of modern agricultural production development and ensure the level of production. Therefore, there is an urgent need for a new and miniaturized agricultural equipment to provide flexible and convenient production assistance. Therefore, the micro-cultivator emerges at the right moment and shows a good momentum of development.
Most of the existing micro cultivators provide power for diesel or gasoline engines, which will produce a series of problems such as vibration, noise and environmental pollution while working. Therefore, the design of this paper will take electricity as power to overcome the above disadvantages, and adopt the track movement mode to improve the environmental adaptability of micro cultivators.
This article adopts the method of modularization, will march movement and movement decomposition, in combination with the existing on the basis of the structure and principle of micro tillage machine, using Pro/E and CAD software, completed a caterpillar decay tillage machine structure design, and the drive wheels, rotary tillage blade parts, such as check and interference analysis, to ensure the strength and reliability of the operating parts, finally the development trend of micro tillage machine briefly.
The crawler micro cultivator designed in this paper has simple and clear structure and is easy to operate. However, as an agricultural machine, it does not have high precision of component parameters.

Keywords Structural design, micro tiller, load analysis, development trend

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

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