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1、19帶位移電反饋的二級(jí)電液比例節(jié)流閥設(shè)計(jì)摘要:電液比例技術(shù)發(fā)展迅猛,以其控制精度較高、結(jié)構(gòu)簡(jiǎn)單、成本合理等優(yōu)點(diǎn)在工業(yè)生產(chǎn)中獲得了越來(lái)越來(lái)廣泛的應(yīng)用,它的發(fā)展程度也可從一個(gè)側(cè)面反映一個(gè)國(guó)家液壓工業(yè)技術(shù)水平,因而日益受到各國(guó)工業(yè)界的重視。本設(shè)計(jì)的課題是電液比例閥中的一類——二級(jí)電液比例節(jié)流閥。在對(duì)該閥各部分的結(jié)構(gòu)、原理及性能參數(shù)進(jìn)行詳細(xì)分析的基礎(chǔ)上,完成了功率級(jí)為二通插裝閥,先導(dǎo)級(jí)為電液比例三通減壓溢流閥,通徑為32mm,最大流量為480L/min,進(jìn)油口額定工作壓力為31.5MPa,出油口額定工作壓力為30
2、.5MPa的電液比例節(jié)流閥的結(jié)構(gòu)設(shè)計(jì)與參數(shù)設(shè)計(jì)。關(guān)鍵詞:電液比例節(jié)流閥;插裝閥;比例電磁鐵Thedesignoftwostageelectro-hydraulicproportionalthrottlevalvewithdisplacementelectricityfeedbackMajority:MachineDesign&ManufacturingandAutomationAbstract:Thetechnologyofelectro-hydraulicproportionaldevelopsswif
3、tlyandviolently,ithasmoreandmorecomethewidespreadapplicationintheindustrialproductionbyitsprecisioncontrol,thesimplystructure,thereasonablecostandsoon,itsdegreeofdevelopmentalsomightreflectanationalhydraulicpressureindustrialtechnologylevelfromaside,sothi
4、stechnologyreceivedmoreandmorevaluebythevariouscountries'industrialfield.Thetopicofthisgraduationprojectispreciselyonekindofelectro-hydraulicproportionalvalve----twostageelectro-hydraulicproportionalthrottlevalve.Thisdesignwillfirstcarryondetailedanalysis
5、tothestructure,principleandfunctionparameterofvariouspartofthiskindofvalve,thencompletethestructuraldesignandtheparameterdesignofthetwostageelectro-hydraulicproportionalthrottlevalve,thisvalve'smainstageiscartridgevalve,itsforerunnerstageisthreecontactsre
6、ducedpressureoverflowvalve.Thisvalve'srectumis32mm,anditsmaxregulatedflowis480L/min,theoilinputportfixedworkingpressureis31.5MPa,theoutputportfixedworkingpressureis30.5MPa.Keyword:Electro-hydraulicproportionalthrottlevalve;Cartridgevalves;Proportionelectr
7、o-magnetratioelectromagnet1919目錄前言…………………………………………………………………………………………………………1正文…………………………………………………………………………………………………………21緒論…………………………………………………………………………………………………………21.1電液比例閥概述……………………………………………………………………………………21.2電液比例閥的特點(diǎn)與分類…………………………………………………………………………21.3電液比例
8、閥的發(fā)展階段……………………………………………………………………………31.4電液比例技術(shù)在我國(guó)的發(fā)展………………………………………………………………………51.5比例流量閥………………………………………………………………………………………52流量閥控制流量的一般原理………………………………………………………………………………72.1流量控制的基本原理………………………………………………………………………………82.4主閥閥芯