挖掘机工作装置设计.doc

PAGE 43 摘要 液压挖掘机是一种应用广泛的多功能的建设施工机械，作为工程机械的主力机种。出于液压挖掘机具有多品种，多功能，高质量及高效率等特点，因此受到了广大施工作业单位的青睐，其生产制造来了日益蓬勃发展。 液压挖掘机主要由发动机、工作装置、回转装置、行走装置和、电气装置和液压系统等部分组成。本次设计主要是关于挖掘机工作装置设计，工作装置是直接完成挖掘任务的装置，进行工作装置的全面的通用性设计研究对推动国内挖掘机发展具有十分重要的意义。 本设计全面收集了国内外挖掘机工作装置设计的资料，对挖掘机的各种工况进行了分析，总结了挖掘机工作装置的设计要求。分别对工作装置的各个组成部分进行了较为详细的设计，这其中就包括了动臂，斗杆和挖斗的选型，各种组成部分尺寸的计算及它们驱动装置的设计，驱动装置设计包括各种驱动装置的布置，行程，作用力的确定。最后对动臂和斗杆在一些特殊工况下进行了校核。 关键字：挖掘机：工作装置：动臂：斗杆：挖斗 Abstract Hydraulic excavator is a kind of multifunction machine used widely in construction field．It is a primary kind of machine．Because of its multifunction，high quality and efficiency and various kinds，many company like to use it．Its manufacture is developing day by day． Hydraulic excavator consist of engine working equipment，rotator，walking equipment , electric control part and hydraulic system．One main parts—working equipment designing make up of this article．Working equipment is the first equipment to finish digging task．Using universal and professional excavator’s working Equipment’s design methods，having a study of universal design with computer is very important to the development of domestic excavator． In this article，collect most of the world excavator’s working equipment’s designing material．Analyze various kinds of excavator’s working conditions．Detailed design the various components of working device separately, including the selection and calculation of Boom, Stick and bucket and what they drive and design of their drive. The design of drive includes determine of their arrangement and travelling and force. At last checking the intensity of boom and stick in some special conditions. Keywords: excavator，working equipment，boom, stick , bucket 目 录 TOC \o 1-3 \u 1 绪论 PAGEREF _Toc263501799 \h 1 1.1 设计选题的意义 PAGEREF _Toc263501800 \h 1 1.2 国内外液压挖掘机的发展动态和研究现状 PAGEREF _Toc263501801 \h 1 1.2.1 国外液压挖掘机的发展动态和研究现状 PAGEREF _Toc263501802 \h 1 1.2.2 国内液压挖掘机的发展动态和研究现状 PAGEREF _Toc263501803 \h 2 1.3 当前液压挖掘机存在的主要问题