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22吨履带式液压挖掘机总体设计


摘 要 参照国内外著名品牌的先进机型,收集分析挖掘机的尺寸参数,性能参数,作业要 求等相关资料。以此为基础,进行对挖掘机的机械结构,液压系统,电气控制的设计等。 设计思路是从挖掘机总体的工作性能和动作要求入手, 确定整机必要的性能参数并对整 机的稳定性进行校核。随后将对挖掘机工作装置的具体结构、基于单片机对柴油机油门 控制系统进行设计并运用软件将其绘制。 关键词:液压挖掘机,总体设计,单片机,柴油机油门控制 ABSTRACT According to the domestic and international famous brands of advanced type,collecting and analyzing the information of the hydraulic excavator about their size, performance parameters, operational requirements other relevant information. On this basis, I designed the mechanical structure, hydraulic excavator, electrical control system of hydraulic excavator and so on. The way to solve the task is on the basis of the function of the whole of the excavator ,calculated the performance parameters of the excavator and checked the stability of the excavator. Then I designed the structure of the platform of type excavator, desgin control system based on MCU(Micro Controller Unit) ,and use software to draw. Key words: Hydraulic excavator, overall design, micro-controller unit (MCU), control of diesel engine’s accelerator 目 录 1 绪论????????????????????????????????? 01 1.1 液压挖掘机的工作特点和基本类型 ?????????????????01 1.2 液压挖掘机的发展状况 ?????????????????????? 03 2 总体设计方案 ??????????????????????????? 05 2.1 工作装置设计方案原则 ??????????????????????05 2.2 液压设计方案原则 ???????????????????????? 05 3 液压系统及元件的选型 ???????????????????????07 3.1 液压系统的工况分析 ???????????????????????07 3.2 挖掘机液压系统的回路分析 ???????????????????? 08 3.3 系统初步计算和液压元件的选型 ?????????????????? 11 4 挖掘机工作装置的设计 ???????????????????????14 4.1

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