10立方米挖掘机推压机构设计毕业论文.doc
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1、摘 要挖掘机是大多数露天矿必不可少的生产设备,是工程机械中最重要的采掘设备,在冶金、能源、矿山等方面有广泛的应用。矿用挖掘机是露天矿间断式开采的主要设备,它可以实现完全机械化,具有机械化自动化程度高、斗容量大、环保性能好、挖掘效率高、进度快、机动性能好等优点。由于常常在野外和露天作业,工作环境十分恶劣,要求挖掘机的各个装置既要结构合理,性能安全可靠又要尽可能降低成本。推压机构作为挖掘机的主要的工作部件,它的性能直接影响挖掘机的整体工作性能。本文通过对挖掘机的四种工况进行分析,确定推压机构的计算载荷,确定推压机构所需的功率,确定传动方案,设计推压机构。本文还介绍了挖掘机国内外发展的现状、挖掘机的
2、结构组成及工作过程,以及本论文需要应用的理论基础和应用的工具,并使用AutoCAD2004软件绘制推压机构总装及零部件的二维图纸。关键词:矿用挖掘机 推压机构 二级减速器 有限单元法AbstractExcavator is necessary producing equipment for lots of strip mine, and it is the most excavating equipment of engineering machine which is broadly used in metallurgy, energy sources, mine etc. Large mi
3、ning excavator is the main equipment when exploiting strip mine. It can achieve completely mechanization. It has the characteristic of high automatization, good property of environmental protection, the efficiency of excavation is high, and progress is rapid, quality is reliable,and maneuverability
4、is good. Due to work outside frequently, working environment is very bad. Which needs excavator not only has reasonable configuration, safe and reliable performance, but also has lower cost. pushing mechanism is excavators leading working parts, whose performance can directly influence excavators wo
5、rking performance.Based on the four excavators working conditions,we analyse and determine assumed load ,pushing power and driving scheme of pushing mechanism, then design the pushing mechanism. This paper describes the status of the development of domestic and foreign excavators, the structure and
6、the work process of excavators, the excavatorspushing mechanism theory and application tools are introduced in this paper, and mapping two-dimensional Drawings of assembly and parts of excavatorspushing mechanism by AutoCAD 2004 software. Keywords: mining excavator pushing mechanism secondary reduci
7、ng device FEA目 录摘 要IAbstractII第一章 绪论11.1机械式挖掘机概述11.2 国内外机械式挖掘机发展21.2.1国内机械式挖掘机发展概况21.2.2国外机械式挖掘机发展概况31.3 本设计的研究内容5第二章 推压机构构造与工作原理62.1 机械式挖掘机结构62.2 机械式挖掘机工作原理62.3 动臂结构原理介绍72.3.1动臂整体概述72.3.2 动臂各部分功能概述72.4 推压传动机构的构造和特点102.3.1减速器的主要参数112.3.2减速器的推压工作状态13第三章 工况分析及传动方案的确定143.1工况分析143.1.1推压力计算163.1.2确定电机163
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