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1、第 页电液执行器的设计摘要电液执行器是一种智能型机、电、液一体化动力装置，随着阀门技术的不断应用与发展，电液执行器也得到了更广泛的应用。本课题所设计的是一种快关阀上应用的电液执行器，很大程上减小了阀门的开关时间，使得阀门的完全开启和关闭的时间提高到了0.2s。通过对国外电液执行器的借鉴，本课题对电液执行器的液压系统原理图及执行器的执行机构进行了整体设计。本文介绍了电液执行器的组成、液压原理图及其控制机构。设计的执行机构采用拨叉式机构，以其独特的扭矩曲线成为驱动大部分角行程阀最理想的机械，为大口径阀门提供较大的开启扭矩。采用的液压系统则由各液压元件按逻辑原理组成，通过电气信号的转换从而实现功率的
2、转换，控制执行机构动作，驱动阀门开启和关闭。液压系统采用内置小油缸一体化设计无需额外配置庞大的液压站，减小了执行器的整体体积。关键词：电液执行器、快关阀、拨叉式结构辽宁科技大学本科生毕业设计（论文） 第 页The design of the electro-hydraulic actuatorAbstractThe design of operation structure of the electro-hydraulic actuators digest electro-hydraulic actuator is a kind of intelligent machine, with a i
3、ntegration of electricity, liquid and power installation.With the continuous application and development of valve technology, electro-hydraulic actuator has been more widely used. This topic is design of the quick closing valve on the application of electro-hydraulic actuator, largely reduced the sw
4、itching time of the valve, the valve fully open and close time increased to 0.2 second. Based on the reference of foreign electro-hydraulic actuator, this topic is about the overall design of the electro-hydraulic actuator hydraulic system principle diagram and the structure of the actuator. This pa
5、per expounds the composition, hydraulic principle diagram and the control mechanism of the electro-hydraulic actuator. Actuator uses fork type, it is the most ideal driving mechanical of most of the quarter-turn valves cause of its unique torque curve , it can provide large diameter valves with a la
6、rger torque. Hydraulic system is composed of various hydraulic components, which combine in a logical way. The system realize the transformation of the power by the transformation of the electrical signals to control the actuator motion, driving valve opening and closing. Hydraulic system adopt the
7、design of integration of built-in small oil cylinder , so there is no need of additional configuration large hydraulic station, so as to reduce the overall volume of the actuator.Key words: electro-hydraulic actuators,quick closing valves,fork type structure辽宁科技大学本科生毕业设计（论文） 第 页目录第一章 绪论.11.1 引言.1 1.
8、2 电液执行器的发展背景及优势.1 1.3 近些年电液执行器在国内外的发展情况.2 1.4 课题研究的方法及意义.2第二章 电液执行器液压系统原理设计.42.1 电液执行器的基本结构和液压系统.4 2.1.1 电液执行器的基本结构.4 2.1.2 电液执行器的执行机构.4 2.1.3 电液执行器的液压控制系统.5 2.2 电液执行器的液压系统原理图.5 2.2.1 液压控制原理.5 2.2.2 液压系统原理图.6 2.2.3 液压系统主要元件.6 2.2.4 液压系统结构图.7 2.3 电液执行器的设计参数.8 2.4 电液执行器的工况分析.8 2.4.1 电液执行器液压缸工况分析.8 2.4.2 电液执行器液压缸负载和速度循环图.9第三章 电液执行器液压缸的计算.103.1 液压缸的负载计算.10 3.2 液压缸缸筒的确定.11 3.2.1 缸筒的的选择.11 3.2.2 缸筒的计算.
