汽车专业英语电子教案 课件.ppt

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1、UnitThree3.6UniversalDriveContentsPre-questionsII.TextExplanationIII.ExercisesHowmanymainunitsdoestheuniversaldriveconsistof?Whatarethey?Theuniversaldriveconsistsoftheuniversaljoints,driveshaftandsupport.DiagramofcarshowingclutchlocationPre-questionsHowmanyty

2、pesdoestheuniversaljointhave?Theuniversaljointcanbedividedintorigidandflexiblejoint.Rigidjointcanbedividedintonon-constant-velocityjoint(commonlyusedforcross-axis),quasi-constant-velocityjoint(suchasdouble-typeuniversaljoint)andconstant-velocityjoint(suchasBa

3、llBasketdrive).Pre-questionsWhat’sthefunctionoftheuniversaljoint?Theuniversaljointisanangulatingmechanicalpowertransmissionfortheneedtochangethedirectionofshaftlineposition.Pre-questionsII.TextExplanationFig.3-6UniversalDrive1-universaljoints;2–driveshaft;3-t

4、heformerdriveshaft;4-supportIntheautomotivetransmissionandothersystems,inordertoachieveanumberofaxesintersection,orrelativepositionofconstantlychangingbetweenthepowertransmissionshafts,universaldrivemustbeused.译文：在汽车传动系及其它系统中，为了实现一些轴线相交或相对位置经常变化的转轴之间的动力传递，必须采

5、用万向传动装置。II.TextExplanationUniversaldrivenormallyconsistsoftheuniversaljoints,driveshaftandsupport.译文：万向传动装置一般由万向节、传动轴和中间支承三部分组成。II.TextExplanationUniversaljointsareangulatingmechanicalpowertransmissionfortheneedtochangethedirectionofshaftlineposition.译文：万向节是实

6、现变角度动力传递的机件，用于满足传动轴方向改变的需要。II.TextExplanationThedriveshafthastowithstandthetorsionalstressesofthetransmittingtorque,andyetitmustbelightandwellbalancedsothatvibrationandwhipwillnotoccurathighspeeds.译文：传动轴必须要承受传递力矩时的扭转应力，重量要轻，要很好的平衡，这样在高速时才不会发生振动和噪声。II.TextExpl

7、anationAnintermediatesupportingstructureisinfactofabearingsupportandcushioninstalledinthebody(orframe),forsupportingoneendofshaft.译文：中间支承结构实际上是一个安装在车身（或车架）上的轴承座和缓冲垫，用来支承传动轴的一端。II.TextExplanationIII.Exercisesrigidjointsflexiblejointsnon-constant-velocityjoints

8、quasi-constant-velocityjointsdouble-typeuniversaljointsthebisectorsurfaceslidingsplineintermediatesupportingstructurerubbercushionbearingsupport刚性万向节挠性万向节不等速万向节准等速万向节双联式万向节平分面/法平面滑动花键中间支撑