1NCL5161型厢式运输车驱动桥设计.docVIP

黑龙江工程学院本科生毕业设计  PAGE II 黑龙江工程学院本科生毕业设计 本科学生毕业设计 NCL5161型厢式运输车驱动桥设计  PAGE 37 The Graduation Design for Bachelors Degree Design of NCL5161 Van Drive Axle 摘 要 驱动桥是汽车总成中的重要承载件之一，其性能直接影响整车的性能和有效使用寿命。一般由主减速器、差速器、半轴及桥壳四部分组成，其基本功用是增大由传动轴或直接由变速器传来的转矩，将转矩分配给左、右车轮，并使左、右驱动车轮具有汽车行驶运动学所要求的差速功能；此外，还要承受作用于路面和车架或车厢之间的铅垂力、纵向力和横向力。 本设计首先论述了驱动桥的总体结构，在分析驱动桥各部分结构型式、发展过程及其以往形式的优缺点的基础上，确定了总体设计方案：采用整体式驱动桥，单级减速器，主减速器齿轮采用螺旋锥齿轮，差速器采用圆锥行星齿轮差速器，半轴采用全浮式型式，桥壳采用铸造整体式桥壳。在本次设计中，计算了单级减速器、圆锥行星齿轮差速器、全浮式半轴的各项参数，对桥壳的进行校核及材料选取。 关键词： 驱动桥；单级；主减速器；齿轮；材料；计算机辅助设计 ABSTRACT Driving axle assembly is one of the important vehicle carrying pieces and can directly impact on the whole vehicles performance and its effective life. Driving Axle is consisted of Main Decelerator, Differential Mechanism, Half Shaft and Axle Housing. The basic function of Driving Axle is to increase the torque transmitted by Drive Shaft or directly transmitted by Gearbox, then distributes it to left and right wheel, and make these two wheels have the differential function which is required in Automobile Driving Kinematics; besides, the Driving Axle must also stand the lead hangs down strength, the  HYPERLINK javascript:showjdsw(showjd_0,j_0) longitudinal force and the transverse force acted on the road surface, the frame or the compartment lead. The configuration of the Driving Axle is introduced in the thesis at first. On the basis of the analysis of the structure and the developing process of Driving Axle, the design adopted the Integral Driving Axle, Single Reduction Gear for Main Decelerator’s deceleration form,  HYPERLINK javascript:showjdsw(showjd_0,j_0) Spiral Bevel Gear for Main Decelerator’s gear, Full Floating for Axle and Casting Integral Axle Housing for Axle Housing. In the design, we accomplished the design for Double Reduction Gear,  HYPERLINK /dict_result.aspx?searchword=%e5%9c%86%e9%94%a5tjType=sentencestyle=t=tapered tapered  HYPERLINK javascript:showjdsw(showjd_0,j_0) Planetary Gear Differential Mechan