设计简介
摘要
汽车转向系统与车辆和个人安全息息相关，是汽车行业要高度重视的系统。随着科学技术的飞速发展，汽车行业要求的关键技术也越来越高。也开始重视汽车的转向的操纵性能，转向系统也一直是人们最关心的课题之一，特别是车流密集的今天，转向系统显得非常重要。由于机械式转向器存在一定的局限性，不能同时满足灵活性与轻便性的特点，所以采用电动助力的方式来克服转向时的阻力，这也是汽车发展的趋势。
本次设计围绕中小型轿车，对其转向系统进行设计，采用电动助力方式，对系统中关键部件进行设计计算，为了更直观的查看设计成果，利用三维软件对所设计的零件进行建模，以及运动仿真，确保设计的合理性与安全性。
关键词:电动助力；齿轮齿条转向器；转向系统
汽车转向系统与车辆和个人安全息息相关，是汽车行业要高度重视的系统。随着科学技术的飞速发展，汽车行业要求的关键技术也越来越高。也开始重视汽车的转向的操纵性能，转向系统也一直是人们最关心的课题之一，特别是车流密集的今天，转向系统显得非常重要。由于机械式转向器存在一定的局限性，不能同时满足灵活性与轻便性的特点，所以采用电动助力的方式来克服转向时的阻力，这也是汽车发展的趋势。
本次设计围绕中小型轿车，对其转向系统进行设计，采用电动助力方式，对系统中关键部件进行设计计算，为了更直观的查看设计成果，利用三维软件对所设计的零件进行建模，以及运动仿真，确保设计的合理性与安全性。
关键词:电动助力；齿轮齿条转向器；转向系统
Abstract
The steering system of the car is to control the direction of the car according to the will of the driver. The steering system is closely related to the safety of vehicles and individuals. It is a system that the automotive industry should attach great importance to. With the rapid development of science and technology, the key technology required by the automotive industry is also getting higher and higher. It has also begun to pay attention to the steering performance of the car. The steering system has always been one of the most concerned topics. Especially today, the steering system is very important.
Because the mechanical steering device has certain limitations and can not satisfy the characteristics of flexibility and lightness at the same time, the use of electric power to overcome the resistance to steering is also the trend of automotive development.
This design revolves around small and medium-sized cars, designing their steering systems, using electric power to design and calculate key parts of the system, and using 3D software to model the designed parts in order to more intuitively view the design results. And motion simulation. Ensure the rationality and security of the design.
Key words: electric power; Gear rack steering; Steering system
The steering system of the car is to control the direction of the car according to the will of the driver. The steering system is closely related to the safety of vehicles and individuals. It is a system that the automotive industry should attach great importance to. With the rapid development of science and technology, the key technology required by the automotive industry is also getting higher and higher. It has also begun to pay attention to the steering performance of the car. The steering system has always been one of the most concerned topics. Especially today, the steering system is very important.
Because the mechanical steering device has certain limitations and can not satisfy the characteristics of flexibility and lightness at the same time, the use of electric power to overcome the resistance to steering is also the trend of automotive development.
This design revolves around small and medium-sized cars, designing their steering systems, using electric power to design and calculate key parts of the system, and using 3D software to model the designed parts in order to more intuitively view the design results. And motion simulation. Ensure the rationality and security of the design.
Key words: electric power; Gear rack steering; Steering system
目录
1 绪论 1
1.1 本课题研究的意义和目的 1
1.2 国内外研究现状 1
1.3 本课题主要研究内容 2
2 电动助力转向系统设计 3
2.1 电动助力转向系统特点 3
2.2 电动助力转向系统的总体组成 3
2.3 电动助力的原理 4
2.4 电动助力转向系统的类型选择 4
2.5 电动助力转向系统的助力特性 5
3 齿轮齿条转向器设计与计算 6
3.1 齿轮齿条转向器设计 6
3.1.1 齿轮齿条转向器设计要求 6
3.1.2 齿轮齿条转向器关键部件 6
3.2 计算汽车原地转向的阻力矩 7
3.2.1 作用在转向盘手力计算 7
3.2.2 梯形臂长度计算 8
3.2.3 轮胎直径的计算 8
3.2.4 转向横拉杆直径的确定 8
3.2.5 估算主动齿轮轴直径 8
3.3 齿轮齿条转向器的计算 9
