轻型货车转向器的设计.docVIP

PAGE PAGE I 摘 要 根据对齿轮齿条式转向器的研究以及资料的查阅，着重阐述了齿轮齿条式转向器类型选择，不同类型齿轮齿条式转向器的优缺点，和各种类型齿轮齿条式转向器应用状况。本设计以LZW1029BF型轻型货车为设计对象,根据原有数据计算转向系的传动比，并确定齿轮齿条的几何参数。齿轮齿条式转向器总体设计，受力分析，以及对齿轮的接触疲劳强度校核、齿根弯曲疲劳强度校核。修正齿轮齿条式转向器中不合理的数据。通过对齿轮齿条式转向器的设计，选取出相关的零件如锁紧螺母、轴承等。画出齿轮齿条式转向器各零件和总装配的三维图和1张A1零件图。 关键词 齿轮齿条 转向器 设计计算 PAGE PAGE II ABSTRACT According to the research of the Rack-and-pinion steering and the data of the machine, the advantages and disadvantages of the typical machine are analyzed, and the layout type is chosen，and the application condition with every kind of types Rack-and-pinion steering is introduced. The design of model LZW1029BF truck as the design object, according to the original data to calculate the steering gear ratio, and to determine the geometric parameters of gear rack. That text precedes the total designs to the Rack-and-pinion steering. Suffering the dint analysis, and calibrate the tired strength of the machine with the bent and tired strength in root of tooth. This article revised the unreasonable data of the steering. With the design of the Rack-and-pinion steering, selects the related spare parts, such as locknut, bearing...etc. Drawing the three-dimensional figure of Rack-and-pinion steering and 1 A1 parts drawing. KEY WORDS Rack-and-pinion steering design and calculation PAGE PAGE III 目 录 1 绪论 ……………………………………………………………………………………… 1 1.1 汽车转向系统简介 ………………………………………………………………… 1 1.1.1 机械转向系统 ………………………………………………………………… 2 1.1.2 动力转向系统 ………………………………………………………………… 2 1.2 汽车转向装置的设计趋势 ………………………………………………………… 3 1.3 汽车转向装置的发展趋势 ………………………………………………………… 4 1.4 小结 ………………………………………………………………………………… 4 2 齿轮齿条式转向器方案分析 …………………………………………………………… 6 2.1 齿轮齿条式转向器的方案选择 …………………………………………………… 6 2.2 小结 ………………………………………………………………………………… 9 3 转向系主要性能参数…………………………………………………………………… 10 3.1 转向盘参数的选取………………………………………………………………… 10 3.1.1 转向盘总转动圈数…………………………………………………………… 10 3.1.2 转向盘直径…………………………………………………………………… 10 3.2 转向阻力矩………………………………………………………………………… 10 3.3