驱动桥说明书.doc免费

商用车汽车驱动桥设计驱动桥主减速器差速器Design of Drive Axle For commercial vehicle Abstract The subject of this design is commercial vehicle ,how to design a high efficiency reliable become the aim of this design. drive axle is at the end of the powertrain, and its basic function is increasing the torque and reducing the speed,bearing the force between the road and the frame or body. According to the design parameters given , we adopt the ordinary not-disconnecting type transaxle.we determine the overall vehicle parametres in accordance with the traditional design methods and reference the same vehicle parameters, then identify the final drive, differential, axle and axle housing structure type, finally design the parameters of the main and the driven gear of the final drive, axle gears and spiral bevel gear and check the strength and life of them. In design process of the drive axle,we should ensure a reasonable structure, practical applications, the design of assembly and parts as much as possible meeting requirements of the standardization of parts, components and products’ univertiality and the serialization and change , convenience of repair and maintenance, good mechanical technology, being easy to manufacture, to ensure the best dynamic and fuel economy on given condition. Key words: commercial vehicle, drive axle, final drive, differential 目　录 前　言 1 第1章 驱动桥的结构形式及选择 3 1.1 驱动桥的结构形式及选择 3 1.1.1 非断开式驱动桥 3 第2章 主减速器的设计与计算 4 2.1 主减速器的设计与计算 4 2.1.1 主减速器的结构型式 4 2.1.2 主减速器主动锥齿轮的支承型式及安装方法 4 2.1.3 主减速器从动锥齿轮的支承型式及安装方法 5 2.1.4 主减速比的确定 5 2.1.5 主减速器齿轮计算载荷的确定 6 2.1.6 锥齿轮主要参数的选择 8 2.1.7 主减速器螺旋锥齿轮的几何尺寸计算 11 2.1.8 主减速器圆弧齿轮螺旋齿轮的强度计算 14 2.1.9 主减速器轴承的计算 19 第3章 差速器的设计与计算 21 3.1 差速器的设计与计算 21 3.1.1 差速器齿轮主要参数选择 21 3.1.2 差速器齿轮的材料 23 3.1.3 差速器齿轮几何尺寸计算 23 3.1.4 差速器齿轮强度计算 26 第4章 半轴的设计与计算 27 4.1 半轴的设计与计算 27 4.1.1 半轴的结构形式分析 27 4.1.2 半轴的强度计算 27 4.2 半浮式半轴计算载荷的确定 27 4.2.1 半轴在纵向力最大时 28 4.2.2 半轴在侧向力最大时 28 4.2.3 半轴在垂向力最大时 29 4.3 半轴的强度计算 30 4.3.1 纵向力最大时 30 4.3. 2侧向力最大时 30 4.3. 3 垂向力最大时 31 4.4 半轴花键的设计 31 4.5 半轴的材料及