1、 I 本科生毕业设计(论文)本科生毕业设计(论文) 题 目: 小型液压挖掘机液压系统的设计 系 别: 机械工程 专 业: 机械设计制作及其自动化 II 小型液压挖掘机液压系统的设计 摘要 近年来,有关挖掘机液压系统方面的文献并不少见,但文献的内容大多针对某一专题 进行研究,系统地论述现代液压挖掘机液压系统的论文却较少,因此研究和设计液压挖掘 机液压系统具有重要的现实意义和理论意义。 本论文主要概述挖掘机液压技术的发展史及其目前在国内的外发展情况,简述了液压 挖掘机发展趋势,本文对液压挖掘机的常用液压回路进行了简单阐述和分析,对课题要求 设计的小型液压挖掘机液压系统进行了方案设计及分析,并通过进
2、一步计算确定了需要的 液压元件完成选型。运用 AutoCAD 绘制液压系统原理图、工作油箱总成、液压布置图、油 箱零件图。最后通过验算证明了本设计的可行性。 关键词:液压系统,挖掘机, III Mini Hydraulic Excavator Hydraulic System of Design Abstract . In recent years, the excavator hydraulic systems, the literature is not uncommon, but most of the content documents of a topic for research,
3、 systematic exposition of modern hydraulic excavator hydraulic system of the paper is less, so the research and design of hydraulic excavator system has important practical and theoretical significance. Hydraulic excavator of this thesis outlines the history of technology and its current development
4、s in the foreign country, outlines the development trend of hydraulic excavators, hydraulic excavators used this hydraulic circuit for a simple set and analysis, subject to design small hydraulic excavator hydraulic system design and analysis, and by further calculation to determine the need for complete selection of hydraulic components. AutoCAD drawing using hydraulic system diagram, work tank assembly, hydraulic layout, tank parts diagram. Finally, tests prove