关 键 词：

A042 HKD640 微型 客车 设计 驱动

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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（后驱动桥与后悬设计）摘 要本次设计为微型客车后驱动桥、后悬架总成设计。驱动桥是汽车传动系主要总成之一，具有承载车身和驱动汽车的功用。后悬架也是汽车重要的总成之一，悬架的结构形式和性能参数直接对汽车行驶平顺性、操纵稳定性和舒适性有很大的影响。根据整车布置的特点和现有的生产水平，为降低成本，使该车具有良好的燃油经济性，操纵性和舒适性的特点，决定采用以下形式：主减速器为双曲面齿轮传动的单级主减速器；差速器为普通对称式圆锥齿轮差速器；半轴的形式为半浮式半轴；驱动桥壳为焊接整体式桥壳。作为非断开式驱动桥，其后悬架应为非独立悬架与之匹配，选择弹性元件为对称式钢板弹簧，减振器为液力筒双向作用式该设计的整体特点是：结构简单紧凑，制造工艺性好，调整维修方便，成本低廉。在说明书的计算部分，说明了主要参数选择的依据，对主减速器，差速器，半轴，驱动桥壳和钢板弹簧进行了尺寸和强度计算。此外，还计算了主减速器支撑轴承的寿命。本文提供了关于以上计算的详细计算依据、步骤和计算数据。关键词：驱动桥，悬架，主减速器，差速器，钢板弹簧，双曲面齿轮HKD640 MINIBUS DESIGN (AFTER THE REAR DRIVEAXLE ANDSUSPENSION DESIGN)ABSTRACTThe design for the minibus after the drive axle, rear suspension assembly design. Vehicle arrangement according to the characteristics and current production levels, to ensure needs, determine the following form: the main reducer for the two-surface single-stage main gear reducer; differential bevel gear for the general symmetric differential; axle in the form of semi-floating axle; drive axle shell for welding the whole bridge. As a non-disconnect type drive axle, then suspension should be non-independent suspension with matching elastic element selected for the symmetric leaf spring, shock absorber for the hydraulic cylinder type two-way effect. The overall features of the design: simple and compact structure, good manufacturing process, adjustment and easy maintenance, low cost. Description of the calculation in part, explain the basis for the main parameters on the final drive, differential, axle, drive axle and leaf springs for the size and strength calculation. In addition, main gear box support calculate the bearing life. This article provides detailed calculations on the basis of the above calculation, steps and calculated data. KEYW