毕业设计（论文）-履带式行走底盘设计（全套图纸）.doc

 PAGE \* MERGEFORMAT 23 履带式行走底盘设计 学 生： 指导老师： （湖南农业大学工学院，长沙，410128） 摘 要：履带式底盘的结构特点和性能决定了它在农田机耕作业中具有明显的优势。根据农田作业对拖拉机的要求，进行履带式农用拖拉机底盘的设计。项目研究对提高农机设计水平和农业机械化技术水平具有重要意义。 该研究应用农业机械学、汽车拖拉机学、机械设计、机械原理等理论，对履带式行走底盘的驱动行走系统进行了理论分析与研究，完成了履带底盘主要工作参数的确定和力学的计算。利用Auto CAD、Pro/E等工程软件完成了底盘的整体设计，达到了技术任务书的要求。从而得到了整体机架与其相关配合的结构框架，对以后的进一步分析提供了一定的资料。 关键词：履带；底盘；行走装置；设计 全套图纸，加153893706 Crawler Type Walking Chassis Design Students: Sun Qianqian Instructor: Li Junzheng (College of Engineering , Hunan Agricultural University, Changsha 410128, China) Abstract: The crawler chassis structure features and performance determines it having obvious advantages in farmland machine-cultivated homework. According to the requirements of farmland homework on tractor designs caterpillar agricultural tractor chassis . Research projects to improve the level of agricultural machinery design level and the agricultural mechanization technology is of great significance. The research application agricultural mechanics,automobile tractor, mechanical design, mechanical principles such as theories ,the crawler walking chassis drive walking system has carried on the theoretical analysis and research, which completed the crawler chassis determination of main working parameters and mechanical calculation. Use of Auto CAD, Pro E engineering such as software to complete the overall design of the chassis, has reached the requirement of technical specification. Thus, get the whole frame related with the structure of the framework, which provides some information later for the further analysis . Key words: Track; Chassis; Walking device; Design 1 前言 1.1 该研究的目的及意义 履带式拖拉机的结构特点和性能决定了它在农田机耕作业中具有明显优势。 首先，履带式拖拉机的接地比压相对较低,从51.8KW到118.4 KW的各型拖拉机的接地比压为30～50KPa,而同级别的轮式拖拉机接地比压要大的多。以96.2 KW拖拉机为例: 东方红1302 履带机接地比压(装推土铲)为47.7KPa;东方红1304 轮式机的接地比压约为104 KPa, 相当于履带拖拉机的二倍多。无论是整地耙地作业还是播种作业履带式拖拉机比轮式拖拉机都占有绝对优势。 其次，履带式底盘的拖拉机不会对翻耕过的土壤造成多次反复的碾压，而轮式底盘在整地和耙地作业时轮胎在翻耕过的土壤上反复碾压，造成对