叉车驱动桥主减速器设计.doc

叉车驱动桥主减速器设计 摘要关键词： Forklift driver axle final design Abstract：With the development of the times, the role of the truck crane is increasingly clear, modern construction projects dependent on increasing truck crane. In recent years, the amount of crane installation engineering is increasing. Therefore, for truck cranes, especially the increasing demand for high-powered forklift crane. When the large power engine output torque is selected，must be matched with a good drive to meet the current rapid forklift truck, high efficiency and high benefit. The single-stage reduction drive axle has become the development direction of the forklift truck. This paper mainly is the main reducer for the single - grade reduction drive axle. Firstly, the structure and basic parameters of the main reducer are determined. Then determine the design scheme. Finally, calculate the data of the main reducer. In this paper, the gear type is a spiral bevel gear for the main reducer design, It can effectively improve the transmission efficiency of the main reducer. Keywords: 4t forklift Central single-stage main gear Bevel Gear 目录 前　言 2 设计要求 3 1 驱动桥结构方案拟定 4 　 中央主减速器整体式驱动桥 4 2 主减速器设计 5 2.1　主减速器的结构形式 5 2.1.1 主减速器的齿轮类型 7 2.1.2 主减速器主，从动锥齿轮的支承形式 8 2.2 主减速器的基本参数选择与设计计算 9 2.2.1 主减速器计算载荷的确定 10 2.2.2 主减速器基本参数的选择 12 2.2.3 主减速器圆弧锥齿轮的几何尺寸计算 15 2.2.4 主减速器圆弧锥齿轮的强度计算 17 2.2.5 齿轮弯曲强度 18 2.2.6 轮齿接触强度 19 2.2.7 主减速器轴承的载荷计算............... .....................20 3 主减速器齿轮的材料及热处理..................... ...................25 4 主减速器的润滑......................... ...........................26 结 论....................................... .........................27 参考文献.................................... ..........................28 致 谢.................................... ............................29 附　件................................... .............................29  前　言 叉车驱动桥处于叉车传动系的前端，它的基本功用是增加扭矩、降低速度和改变转矩的传递方向，就是增大由传动轴或直接从变速器传来的转矩，然后再将转矩合理的分配给左右驱动的车轮；其次，驱动桥还得承受作用于路面或车身之间的，纵向力、横向力