1、 摘 要 挖掘机是一种广泛用于公路、铁路、建筑、水电、港口、矿山等建设工程的机 械。由于挖掘机具有作业速度快、效率高、机动性好、操作轻便等优点，因此它成为 工程建设中土石方施工的主要机种之一。挖掘机的后驱动桥是挖掘机的重要部件，负 责向外输出动力。驱动桥作为轮式挖掘机底盘传动系统的主要组成部分，处于传动系 统的末端，传递的转矩较大，其工作性能的好坏直接影响到整机的工作性能。 驱动桥的功用是通过主传动改变转矩旋转轴线的方向， 把纵置发动机的转矩传到 横置驱动桥两边的驱动轮上。通过主传动锥齿轮改变传力方向，通过主传动和最终传 动将变速箱输出轴的转速降低，转矩增大；通过差速器解决左右差速问题，减小轮
2、胎 磨损和转向阻力，从而协助转向。此外驱动桥壳还起承重和传力作用。 本文主要是对挖掘机的整个驱动桥内部零部件进行设计计算，包括主减速器部 分、差速器、轮边减速器部分以及制动器的选择，由于驱动桥部件的设计技术已有很 好的发展，所以这次设计主要借鉴的是詹阳动力 JYL80 型挖掘机的一些参数展开的。 此次设计的意义在于熟悉了机械设计的流程和对矿山机械有了一个整体的了解。 关键词关键词：驱动桥、主减速器、差速器、轮边减速 Abstract Excavator is a widely used machine in highway, railway, construction, water, elec
3、tricity, ports, mines and other construction projects. As a result of operating with a fast excavator, high efficiency, good maneuverability, operational advantages such as light, so it became one of the main models of the construction of earth and stone construction. The drive axle of the excavator
4、 is an important component excavator, and is responsible for exporting power. Wheel excavator drive axle chassis is the main component of the transmission system, at the end of transmission, and the transmission of torque large is large, and the performance of its direct impact on the performance of
5、 the whole work Drive axle is the main function of the change in torque transmission direction of rotation axis, the longitudinal engine torque spread Transverse wheel drive on both sides of the bridge. Main drive through bevel gears to change the direction of transmission through the main drive and
6、 final drive gearbox output shaft to reduce the speed, torque increases; through differential settlement of the question about differential, reducing tire wear and steering resistance, so as to assist shift. The drive axle housing also play the role of bearing and transmission. This article is a reprint of the drive axle machine design calculation of the internal parts, including parts of the main reducer, differential, wheel and brake parts reducer of choice.Since drive axle components design
