电动挖掘机电控系统.docVIP

摘 要 挖掘机是用来开挖土壤的施工机械，在国民经济各个领域均具有广泛应用。传统挖掘机以柴油机作为动力源，消耗大量石油的同时污染环境。电动挖掘机在解决资源危机的同时，对环境友好。因此对电动挖掘机的研究具有了重要意义。 本课题主要对电动挖掘机的电控系统进行研究和设计。以小松PC200-6挖掘机为研究对象，分析了该挖掘机的结构组成，工作原理，液压系统。在此基础上对电动挖掘机电控系统进行模块分解，划分为电气系统和电子控制系统，并将两子系统划分为若干功能模块。依据子模块功能，分别设计出电源电路、启动/停止电路、充电电路、辅助电路、电机调速电路、泵阀控制电路、监控系统电路、先导电路，完成了对电动挖掘机各项功能控制的设计任务。 电动挖掘机工作效率高、无污染，对于优化资源结构，提高环境质量具有良好的应用前景。 关键词： 电动挖掘机 液压系统 电控系统 Abstract Excavator as construction machinery used in excavating soil , has extensive applications in various fields in national economy. Traditional excavator takes diesel engine as power source , consuming quantities of oil and polluting the environment ,While electric excavator resolves resource crisis and it do good to surroundings. Therefore, studying electric excavator has an important significance. This subject mainly studys electric excavator’s electric control system. Basing on the study , it is necessary to design another electric control system. Taking KOSATSU PC200-6 excavator for study, I analyzed the structure of the excavator , checked its working principle , and investigated the hydraulic system. On the basis of pre-work , the electric control system is divided into two parts——electrical system and electronic control system . Then the two sub-system break down into several parts . And following the function of these parts ,I finish circuit design , including the power supply circuit , charging circuit , auxiliary circuits , motor control circuit ,valve control circuit ,monitoring system circuit and the pilot circuit . Electric excavator has high efficiency and no pollution . It is significant for optimizing resource structure and improve the quality of the environment. Key words : electric excavator hydraulic system electric system 目 录 第1章 序论 1 1.1课题来源 1 1.2 国内外研究现状 2 1.2.1 国内研究现状 2 1.2.2 国外研究现状 3 1.3 关键技术以及技术难点 3 1.3.1 主要研究内容 3 1.3.2技术难点 3 1.4 本章小结 4 第2章 主要技术指标和主要功能 5 2.1 技术指标 5 2.2 主要实现功能 5 2.3 预期达到的成果形式 6 2.4 本章小结 6 第3章 总体设计方案 7 3.1设计思想 7 3.2技术路线 8 3.2.1 电路框图 8 3.2.2