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HKD640 微型 客车 设计 离合器 操纵 机构 传动轴 CAD 图纸 PDF

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车辆与动力工程学院毕业设计说明书HKD640微型客车设计(离合器及操纵机构及传动轴设计)摘要本次设计了离合器和传动轴。在汽车传动系的这些部件中，离合器和传动轴是其中两个重要的部件。在传动系统中，离合器位于发动机与变速器之间，其作用是使驾驶员可以把发动机与变速器接合或分离。离合器是一种摩擦式分离装置，与驾驶室中离合器踏板相连接。驾驶员通过操纵离合器既可以使发动机与离合器暂时分离，也可以在汽车起步时使发动机与离合器平稳接合。本次设计为膜片弹簧离合器。本设计通过对传动轴的传动类型分析，结合所设计微型客车的特点以及市场趋势等因素，对传动方式和传动轴进行了选型；通过对传动轴的类型与结构分析，选择传动轴的十字轴滚针轴承的密封形式为外卡环式密封，并在其密封部位采用橡胶骨架油封和毡圈油封相结合的密封形式，以适应农村地区的恶略路况；通过对万向节的十字轴 、滚针轴承 、万向节叉的设计计算，确定了所设计车辆使用的这些部件的具体尺寸；通过对传动轴的临界转速和计算载荷的确定，用待定系数法确定了传动轴的花键轴和轴管的尺寸，并校核了其扭转强度和临界转速，确定了合适的安全系数。鉴于矩形花键的一系列优点和国内的生产加工水平，传动轴花键采用了矩形花键。传动轴的实验室传动轴的生产加工中的一项至关重要的程序，本文在该书中对传动轴的试验进行了简要介绍，并且在设计过程中对涉及到实验的部分有针对性查阅了同类型的产品的试验结果，对设计结果予以修正。综合各部分的设计及校核结果，所设计的传动轴能满足所设计的微型客车的传动要求。关键词：离合器, 摩擦式, 膜片弹簧, 传动轴, 十字轴 HKD640MINI PASSENGER CARCLUTCH、CONTROL MECHANISMAND PROPELLER SHAFT DESIGNABSTRACT In this thesis ,clutch、control mechanism and propeller shaft is designed .The clutch and the transmission are two important units of all .The clutch is located in the power train between the engine and the transmission .Its purpose is to permit the driver to coupe or uncouple the engine and transmission .The clutch is a friction-type device .It is linked to a clutch pedal in the drivers compartment .The clutch allows the driver to couple the engine or uncouple the engine from transmission while he is shifting gears or starting the automobile moving rest .In the design ,we use the type of coil-pressure-spring .The thesis introduced power transmission shaft used on farming transporters. According to the features of the farming transporter and the characters of the road in rural areas ,we chose the simply made open style power transmission shaft .For farming transporters , its cost and convenience for reparation and adaptability rather than its comfort ability and science ratio are concerned .So during the design we did not pay too much attention to the popular which is often advanced technology of the filed .On the contrary ,we just made some necessary improvement to the using form .For example ,we use involutes serration instead of rectangle serration ,so the durability of the spine will be much upgraded while its cost still low because nowadays its not more difficult to machine involutes serration than rectangle serration .To up the durability of the shaft ,we paid much attention to the seal form of the unit .We used rubber bone