1、 I 摘 要 东风 EQ1092F 型汽车作为我国较先进的军用和民用汽车，有着广泛的用途和重要 的作用。在多轴驱动的汽车上，为了将输出的动力合理的分配给各驱动桥，设有分动 器。分动器的功用就是将变速器输出的动力分配到个驱动桥，并且进一步增大扭矩。 分动器也是一个齿轮传动系统，它单独固定在车架上，其输出轴与分动器的输出轴用 万向传动装置连接，分动器的输出轴有若干根，分别经万向传动装置与各驱动桥相连。 越野汽车在良好的道路行驶时，为减少功率消耗及传动系机件和轮胎磨损，一般要切 断通向前桥的动力。在越野行驶时，根据需要接合前桥并采用低速档，增加驱动轮数 和驱动力。 本文概述了分动器的现状和发展趋势，
2、介绍了分动器领域的最新发展状况，对工 作原理做了阐述。本设计选用机械式分动器，其具有结构简单、传动效率高、制造成 本低和工作可靠等优点。主要说明了三轴式分动器的设计和计算过程，选择合理的结 构方案进行设计，对分动器高低档齿轮和轴以及轴承做了详细的设计计算，并进行了 受力分析、强度和刚度校核计算，对一些标准件进行了选型以及壳体得设计。 关键词：分动器；三轴式；高低档；校核；齿轮传动。 II ABSTRACT The DongfengEQ1092 cars are more advanced military and civilian cars, which are used widely and
3、 take the important role. In order to output the power to drive axle reasonably we settle transfer case drive in the car. The function of transfer case is output the power which from the gear box to drive axle and increase the torque. T he transfer case is a gear transmission system .It is fixed on
4、the frame alone. The output axis and the transfer case output axis are connected by universal driven device .There are several output axis in transfer case, which link to driving axle by universal driving device .When the cross country vehicle running on the good way ,it always cut down the power to
5、 front axle in order to reduce consumption of transmitting mechanism and wheel. According to the need ,the cars connect the front axis and use low speed when in the off-road driving to increase the number of driven wheels and drive power. This paper outlines the transfer case and its further develop
6、ment meanwhile describe the theory of work. This design takes mechanical transfer case. It has a simple structure, high transmission efficiency, low manufacturing cost and working and reliable. Mainly to explain the three-axis sub-actuator design and calculation process, a reasonable choice to design the structure of the program. Accounting the low and high gear of transfer case and drive axis detailedly and analyses the stress and strength . Carrying out the type selected and shell design
