电液比例阀设计.doc

带位移电反馈得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得应用，它得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得重视。本设计得课题就是电液比例阀中得一类——二级电液比例节流阀。在对该阀各部分得结构、原理及性能参数进行详细分析得基础上，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得电液比例节流阀得结构设计与参数设计。关键词：电液比例节流阀；插装阀；比例电磁铁Thedesignoftwostageelectro-hydraulicproportionalthrottlevalvewithdisplacementelectricityfeedbackMajority:MachineDesign＆ManufacturingandAutomationAbstract:Thetechnologyofelectro-hydraulicproportionaldevelopsswiftlyandviolently,ithasmoreandmorecomethewidespreadapplicationintheindustrialproductionbyitsprecisioncontrol,thesimplystructure,thereasonablecostandsoon,itsdegreeofdevelopmentalsomightreflectanationalhydraulicpressureindustrialtechnologylevelfromaside,sothistechnologyreceivedmoreandmorevaluebythevariouscountries'industrialfield、Thetopicofthisgraduationprojectispreciselyonekindofelectro-hydraulicproportionalvalve----twostageelectro-hydraulicproportionalthrottlevalve、Thisdesignwillfirstcarryondetailedanalysistothestructure,principleandfunctionparameterofvariouspartofthiskindofvalve,thencompletethestructuraldesignandtheparameterdesignofthetwostageelectro-hydraulicproportionalthrottlevalve,thisvalve'smainstageiscartridgevalve,itsforerunnerstageisthreecontactsreducedpressureoverflowvalve、Thisvalve'srectumis32mm,anditsmaxregulatedflowis480L/min,theoilinputportfixedworkingpressureis31、5MPa,theoutputportfixedworkingpressureis30、5MPa、Keyword:Electro-hydraulicproportionalthrottlevalve;Cartridgevalves;Proportionelectro-magnetratioelectromagnet目录前言…………………………………………………………………………………………………………1正文…………………………………………………………………………………………………………21绪论…………………………………………………………………………………………………………21、1电液比例阀概述……………………………………………………………………………………21、2电液比例阀得特点与分类…………………………………………………………………………21、3电液比例阀