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小型民意汽车后驱动桥 轻型载货汽车 低速载货汽车驱动桥的设计【小型民意汽车后驱动桥 轻型载货汽车】【7张CAD图纸+PDF图 低速 载货 汽车 驱动 设计 小型 民意 轻型 CAD 图纸 PDF

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盐城工学院毕业设计说明书 2006低速载货汽车的后驱动桥设计摘要：驱动桥采用普通非断开式驱动桥。它结构简单、造价低廉、工作可靠，广泛应用于各种载货汽车。其特点是桥壳是一根支撑在左、右驱动车轮上的刚性空心梁，而齿轮及半轴等所有的传动机件都装在其中。采用组合式桥壳的单级主减速器。单级主减速器代替双级主减速器可大大减小驱动桥的质量。其具有结构简单、质量小、尺寸紧凑及制造成本低等优点。差速器则采用对称式圆锥行星齿轮差速器。差速器壳装在主减速器从动齿轮上。结构简单、工作平稳、制造方便是选择它的主要原因。另外，采用可分式桥壳。整个桥壳由一个垂直结合面分为左右两个部分，每一个部分均由一个铸件壳体和一个压入其外端的半轴套管组成。该结构的桥壳制造工艺简单、主减速器轴承支承刚度好。本设计从所设计的汽车的类型及使用、生产条件出发，并和所设计汽车的其他部件相适应，设计出既定用途的汽车的驱动桥，从而保证所设计汽车的最重要的使用性能的实现。关键字：低速货车；驱动桥；设计。 Design of the transaxle of the low-speed truck Abstract: The transaxle adopts the ordinary not-disconnecting-type transaxle. Because of its simple structure, cheap fabrication cost and reliability, it is applied widely. Its Characteristic is that the bridge shell is a rigidity hollow beam which is supported on the left and right wheels, gears, half-axis and other transmission components. The main gear box uses combined type single stage. The single stage compared to double one can reduce the quality of the transaxle a lot. It has many merits of simple structure, small quality, compact size, low production cost. The differential mass uses symmetrical type and circular cone planet gear. The shell of the differential device is assembled with the driven gear of the transaxle that it is has advantages of simple structure, steadily work and conveniently making. It uses separated type axis shell. The whole shell is divided in to left and right parts by vertical plane. Every part is made up of a casting shell and a semi-axis driven tube which is pressed in outside. This structure has advantages of simple manufacture craft and good supporting rigidity of main gear box bearing. This design is proceeded from the types, production and working of the truck. It is adapted to other parts of the truck design. At last, the set use transaxle of the truck is designed, to ensure the most important