汽车毕业设计--转向系统设计

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1、 1 摘摘 要要 本课题的题目是转向系的设计。以齿轮齿条转向器的设计为中心，一是汽车总体构架 参数对汽车转向的影响；二是机械转向器的选择；三是齿轮和齿条的合理匹配，以满足转 向器的正确传动比和强度要求；四是动力转向机构设计；五是梯形结构设计。因此本课题 在考虑上述要求和因素的基础上研究利用转向盘的旋转带动传动机构的齿轮齿条转向轴 转向，通过万向节带动转向齿轮轴旋转，转向齿轮轴与转向齿条啮合，从而促使转向齿条 直线运动，实现转向。实现了转向器结构简单紧凑，轴向尺寸短，且零件数目少的优点又 能增加助力，从而实现了汽车转向的稳定性和灵敏性。在本文中主要进行了转向器齿轮齿 条的设计和对转向齿轮轴的校核

2、，主要方法和理论采用汽车设计的经验参数和大学所学机 械设计的课程内容进行设计，其结果满足强度要求，安全可靠。 关键词关键词：转向系；机械型转向器 ；齿轮齿条；液压式助力转向器 Abstract The title of this topic is the design of steering system. Rack and pinion steering gear to the design as the center, one vehicle parameters on the overall framework of the impact of vehicle steering; Sec

3、ond, the choice of mechanical steering; third rack gear and a reasonable match to meet the correct steering gear ratio and strength requirements; Fourth, power steering mechanism design; Fifth, the structural design of trapezoidal. Therefore, taking into account the above issues and factors that req

4、uire study, based on the steering wheel rotary drive transmission shaft of the steering rack and pinion steering, through the universal joint drive shaft rotation gear shift, steering rack and steering gear shaft meshing, thereby encouraging steering rack linear motion to achieve steering. Simple structure to achieve the steering tight, short axial dimension, and the number of parts can increase the advantages of less power in order to achieve the vehicle steering stability and sensitivity.