机械式液压动力转向系统设计与仿真论文.doc

陕西理工学院毕业设计 xxxx毕业设计 第 第 PAGE 1 页 共 NUMPAGES 27 页 PAGE PAGE 2 PAGE PAGE 1 机械式液压助力转向系统设计与仿真 Xxx （xxx机械工程学院xxx1班， xx xxxx xxxx） 指导老师：xxxx [摘要] 本课题题目是机械式液压助力转向系统的设计；机械式的液压动力转向系统一般由液压泵、油管、压力流量控制阀体、V型传动皮带、储油罐等部件构成，是以齿轮齿条转向器设计为中心。要完成本课题：一是转向系统总述；二是机械转向器选择；三是齿轮及齿条的合理搭配，以满足转向器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。所以本课题要考虑以上要求，就要研究机械式液压助力转向系统实现转向的原理。只有转向器结构紧凑简单，轴向尺寸较短，和零件数目少的优点而且能增加助力，才能实现汽车稳定、灵敏的转向。所以在本设计说明中主要对转向器齿轮齿条的设计及对转向齿轮轴的校核进行研究，主要方法和理论是采用大学期间汽车设计的经验参数和大学里所学机械设计基础的课程内容以及液压课程内容进行设计，其结果满足强度要求，安全、可靠、稳定。 [关键词] 转向系 齿轮齿条设计 转向梯形 Design and Simulation of mechanical hydraulic power steering system Xxx （Grade:1x,Class：Automobile1101,Major:Thermal Energy and power Engineering，Mechanical Engineering Dept.，xxxx University of Technology，xxx xxx，xxx） Tutor:xxxxx Abstract：The title of this topic is the design of steering system. Rack and pinion steering gear to the design as the center, first are cars’ steering system overview; Second, Cars steering system performance parameters; 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 require 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. In this article a major design steering rack and pinion steering gear shaft and the check, the main methods and theoretical experience in the use of automotive design parameters and the University of mechanical design school curriculum design and