Abstract Model QY40 automobile crane hydraulic pressure systematic design this type hoist the most key one of the design text analyses , demand to carry on the scheme to work out on this performance systematic in hydraulic pressure. Prove to its function and operation principle Have confirmed the basic structure of system every return circuit and ponent tentatively According to giving anization performance parameters and choice of carrying on ponent of performance parameter of hydraulic pressure to calculate Through to the putations and generating heat to check of systematic function, in order to respond to the request that this hoist should reach This text, still to an advanced technology that the automobile crane adopts at present —Control technology of proportion of the electric liquid .Carry on the case study from principle , controlling part , return circuit controlling , control measure and impact on automobile crane ,etc. Therefore give the abundant affirmation to the application of the proportion of the electric liquid in the automobile crane of control technology The development prospect has very great hopes.
key words:Crane truck Hydraulic pressure system Energy-efficient Performance parameter Proportion of the electric liquid 目录 摘要 I ABSTRACT II 第1章概述 1 关于汽车起重机 1 液压传动应用于汽车起重机上的优缺点 1 1 缺点 2 液压系统的类型 2 汽车起重机液压系统功能、组成和工作特点 2 汽车起重机液压系统的运用现状和发展趋势 4 本课题来源、任务要求和整机性能参数 5 本课题主要研究工作 7 第2章液压系统元件选择 8 典型工况分析及对系统要求 8 8 8 8 8 系统要求 9 液压系统类型选择 10 本机液压系统分析 10 各机构动力组合、分配及控制 11 各种执行
