轴向柱塞泵的外文资料参考模板42079

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1、广东技术师范学院天河学院本科毕业设计外文翻译译文学生姓名院（系）广东技术师范学院天河学院专业班级机械设计制造及其自动化指导教师完成日期外文出处：http://www.tpub.com/content/engine/14105/css/14105_58.htmAxialPistonPumpsInaxialpistonpumpsofthein-linetype,wherethecylindersandthedriveshaftareparallel,thereciprocatingmotioniscreatedbyacamplate,alsoknownasawobbleplate,ti

2、ltingplate,orswashplate.Thisplateliesinaplaneplatethatcutsacrossthecenterlineofthedriveshaftandcylinderbarrelanddoesnotrotate.Inafixed-displacementpump,thecamplatewillberigidlymountedinapositionsothatitintersectsthecenterlineofthecylinderbarrelatanangleapproximately25degreesfromperpendicular.V

3、ariable-deliveryaxialpistonpumpsaredesigned,sothattheanglethatthecamplatemakeswithaperpendiculartothecenterlineofthecylinderbarrelmaybevariedfromzeroto20or25degreestooneorbothsides.OneendofeachpistonrodisheldincontactwiththecamplateasthecylinderblockandpistonassemblyrotateswiththedriveshaftThi

4、scausesthepistonstoreciprocatewithinthecylinders.Thelengthofthepistonstrokeisproportionaltotheanglethatthecamplateissetfromperpendiculartothecenterlineofthecylinderbarrel.Avariationofaxialpistonpumpisthebent-axistypeshowninfigure4-14.Thistypedoesnothaveatiltingcamplateasthein-linepumpdoes.Inst

5、ead,thecylinderblockaxialisvariedfromthedriveshaftaxis.Theendsoftheconnectingrodsareretainedinsocketsonadiscthatturnswiththedriveshaft.Thecylinderblockisturnedwiththedriveshaftbyauniversaljointassemblyattheintersectionofthedriveshaftandthecylinderblockshaft,Inordertovarythepumpdisplacement,the

6、cylinderblockshaftandvalveplatearemountedinayokeandtheentireassemblyisswunginanarearoundapairofmountingpintlesattackedtothepumphousing.Figure4-14Bent–axisaxialpistonpumpThepumpingactionoftheaxialpistonpumpismadepossiblebyauniversaljointorlink.Figure4-15isaseriesofdrawingsthatillustrateshowtheu

7、niversaljointisusedintheoperationofthispump.First,arockerarmisinstalledonahorizontalshaft.(Seefig4-15viewA)Thearmisjoinedtotheshaftbyapinsothatitcanbeswungbackandforth,asindicatedinviewB。Next,aringisplacedaroundtheshaftandsecuredtothero