YW0.2型小型挖掘机液压系统的设计(附CAD图纸).docVIP

需全套CAD图纸 联系QQ 648328618各专业都有 摘 要 液压挖掘机是工程机械的一个重要品种，是一种广泛用于建筑、铁路、公路、水利、采矿等建设工程的土方机械。液压挖掘机利用液压元件（液压泵、液压马达、液压缸等）带动各种构件动作，具有许多优点，于是它对液压系统的设计提出了很高的要求，其液压系统也是工程机械液压系统中最为复杂的。因此，对挖掘机液压系统的分析设计对推动我国挖掘机发展具有十分重要的意义。 在搜集了国内外挖掘机液压系统相关资料的基础上，了解了挖掘机液压系统的发展历史，并对挖掘机液压系统的技术发展动态进行了分析总结。本次毕业设计课题是液压挖掘机。挖掘机由多个系统组成，包括液压系统，传动系统，操纵系统，工作装置，底架，转台，油箱，发动机安装等。本人的设计主要致力于分析和设计中型液压挖掘机液压系统的液压元件。以液压元件和液压回路为主。 关键词：挖掘机，液压系统，液压泵 Abstract Construction machinery hydraulic excavator is an important species, and it is widely used in construction, railway, highway, water conservancy, mining and other construction projects of Earthmoving Machinery. The use of hydraulic excavator hydraulic components (hydraulic pumps, hydraulic motors, hydraulic cylinders, etc.) bring a variety of component movement, has many advantages, so it is the design of the hydraulic system of the high demands, and its hydraulic system engineering machinery hydraulic system is the most complex. Therefore, the analysis of excavator hydraulic system design in promoting the development of Chinas excavator of great significance. At home and abroad in gathering relevant information excavator hydraulic system on the basis of the understanding of the excavators of the historical development of the hydraulic system, hydraulic excavators and technical developments have been analyzed and summarized. The graduation project is the subject of hydraulic excavators . Mini-excavator from multiple systems, including hydraulic system, transmission system, control system, the working devices, chassis, turntable, fuel tanks, engine installation were designed. I focused on the design of the analysis and design of medium-sized hydraulic excavator hydraulic system hydraulic components such as hydraulic components and the main hydraulic circuit. Keywords: hydraulic pump, hydraulic system of excavator 目 录 前 言 1 1 液压挖掘机结构与工作原理 2 1.1 液压挖掘机整机性能 2 1.2 液压挖掘机结构 3 1.3 液压挖掘机传动原理 4 2 液压挖掘机工况分析及