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带位移电反馈的二级电液比例节流阀设计 摘要：电液比例技术发展迅猛，以其控制精度较高、结构简单、成本合理等优点在工业生产中获得了越来越来广泛的应用，它的发展程度也可从一个侧面反映一个国家液压工业技术水平，因而日益受到各国工业界的重视。 copyright paper51.com
本设计的课题是电液比例阀中的一类——二级电液比例节流阀。在对该阀各部分的结构、原理及性能参数进行详细分析的基础上，完成了功率级为二通插装阀，先导级为电液比例三通减压溢流阀，通径为32mm，最大流量为480L/min，进油口额定工作压力为31.5MPa，出油口额定工作压力为30.5MPa的电液比例节流阀的结构设计与参数设计。 http://www.paper51.com
关键词：电液比例节流阀； 插装阀； 比例电磁铁 内容来自www.paper51.com The design of two stageelectro-hydraulic proportional throttle valve with displacementelectricity feedback 内容来自论文无忧网 www.paper51.com Majority:MachineDesign ＆ Manufacturing and Automation 内容来自论文无忧网 www.paper51.com
Abstract: The technology of electro-hydraulicproportional develops swiftly and violently, it has more and more come thewidespread application in the industrial production by its precision control,the simply structure, the reasonable cost and so on, its degree of developmentalso might reflect a national hydraulic pressure industrial technology levelfrom a side, so this technology received more and more value by the variouscountries' industrial field. http://www.paper51.com The topic ofthis graduation project is precisely one kind of electro-hydraulic proportionalvalve----two stage electro-hydraulic proportional throttle valve. This designwill first carry on detailed analysis to the structure, principle and functionparameter of various part of this kind of valve, then complete the structuraldesign and the parameter design of the two stage electro-hydraulic proportionalthrottle valve ,this valve's main stage is cartridge valve ,its forerunnerstage is three contacts reduced pressure overflow valve .This valve's rectum is32mm,and its maxregulated flow is 480L/min,theoil input port fixed working pressure is 31.5MPa, the output port fixed workingpressure is 30.5MPa. http://www.paper51.com
Keyword: Electro-hydraulic proportionalthrottle valve; Cartridge valves; Proportion electro-magnetratio electromagnet paper51.com
目录 内容来自www.paper51.com 前言…………………………………………………………………………………………………………1 内容来自论文无忧网 www.paper51.com 正文…………………………………………………………………………………………………………2 copyright paper51.com 1 绪论…………………………………………………………………………………………………………2 http://www.paper51.com 1.1 电液比例阀概述……………………………………………………………………………………2 http://www.paper51.com 1.2 电液比例阀的特点与分类…………………………………………………………………………2 内容来自论文无忧网 www.paper51.com
1.3 电液比例阀的发展阶段……………………………………………………………………………3 copyright paper51.com 1.4 电液比例技术在我国的发展………………………………………………………………………5 http://www.paper51.com 1.5 比例流量阀………………………………………………………………………………………5 内容来自论文无忧网 www.paper51.com 2 流量阀控制流量的一般原理………………………………………………………………………………7 内容来自论文无忧网 www.paper51.com
2.1 流量控制的基本原理………………………………………………………………………………8 内容来自论文无忧网 www.paper51.com 2.4 主阀阀芯节流口形式的确定………………………………………………………………………8 内容来自论文无忧网 www.paper51.com 3 比例节流阀结构设计……………………………………………………………………………………9 copyright paper51.com 3.1 插装阀介绍………………………………………………………………………………………9 paper51.com 3.2 控制盖板的设计…………………………………………………………………………………9 http://www.paper51.com 3.3 插装式主阀设计…………………………………………………………………………………11 http://www.paper51.com 3.4先导阀设计………………………………………………………………………………………21 内容来自www.paper51.com 3.5弹簧的选用………………………………………………………………………………………30 http://www.paper51.com 3.6公差与配合的确定………………………………………………………………………………31 http://www.paper51.com 3.7 比例放大器………………………………………………………………………………………33 paper51.com 3.8 比例电磁铁………………………………………………………………………………………36 copyright paper51.com 3.9 结构设计小结……………………………………………………………………………………37 内容来自www.paper51.com 4 节流阀工作总原理分析及其性能参数指标……………………………………………………………38 内容来自www.paper51.com 4.1 原理分析…………………………………………………………………………………………38 内容来自论文无忧网 www.paper51.com 4.2 静态性能指标……………………………………………………………………………………39 内容来自www.paper51.com 4.3 动态性能指标……………………………………………………………………………………40 copyright paper51.com 5 比例控制系统……………………………………………………………………………………………41 copyright paper51.com 5.1 反馈的概念………………………………………………………………………………………41 copyright paper51.com
5.2 闭环控制与开环控制……………………………………………………………………………41 copyright paper51.com 5.3 电液比例控制系统的组成……………………………………………………………………42 paper51.com 5.4 电液比例控制系统的特点………………………………………………………………………43 http://www.paper51.com 5.5 比例控制系统的分类……………………………………………………………………………43 copyright paper51.com
5.6 比例控制系统的发展趋势………………………………………………………………………44 paper51.com
5.7 小结……………………………………………………………………………………………44 http://www.paper51.com
结论…………………………………………………………………………………………………………45 内容来自www.paper51.com 参考文献……………………………………………………………………………………………………46 copyright paper51.com
致谢…………………………………………………………………………………………………………47 copyright paper51.com |