空气阀制动控制设计毕业论文.doc

空气阀制动控制设计毕业论文
编号 07
本科生毕业设计
空气阀控制设计
Air valve control design
学 生 姓
名 刘飞
专
业 机械电子工程
学
号 0852207
指 导 教
师 吴翠红
分
院 机电工程分院
长春理工大学光电信息学院毕业设计
摘 要
铁路是我国最主要的交通运输方式之一，在我国的经济发展中起着不可替代的重要作用，它所担负的客货运输任务十分繁重。为了完成这个艰巨的任务，列车的牵引重量和运行速度都要不断提高，所以制动技术在铁路发展中越来越重要。
随着铁路向高速、重载方向发展，对制动系统的研究显得尤为重要，制动问题是随着铁路而伴生的古老问题，其研究一直沿用传统的实验方法，一方面是由于空气制动系统结构简单、易于实验;另一方面是由于早期的气体流动理论的局限，难于与空气制动系统相结合。由于现在铁路高速、重载的需要，空气制动系统日益复杂，单纯依靠实验手段难度不断增加，且耗资、费时，特别是实验中制动性能的离散性，促使人们开始转向模拟研究。计算机运算能力的提高，为数学模型的建立创造了条件，促进了制动系统模拟研究的迅速发展。
关键词:铁路货车 120型空气控制阀 紧急阀 总体控制电路 UG
长春理工大学光电信息学院毕业设计
ABSTRACT
Railway is the one of most important transportations of our country, in the development of our country’s economy, it takes the important role of the freight and passenger transportation. To complete this difficulty task, the train’s pull weight and run
speed always to rise, therefore, brake technology is being important in railway development.
As railway develops to high speed and heavy haul, the research on braking system is very important. Brake problem is an ancient problem along with railway, its studies always use the traditional method of experiment, on the one hand, it is because of air brake system’s structure simple, is easy to test; on the other hand, it is because of the limitation of air flow dynamics in early stage, is hard to combine with air brake system. Because of the railway need develops to high speed and heavy haul for the present, and air braking system became more complex, only depend on using the method of experiment means more difficulty, more time and money consuming, especially due to the discrete of brake capability in experiment, make people begin to change research direction to simulation. The raising of computer operational ability, make the condition to work out mathematics model, and promote the brake system quickly development of simulated research.
Keywords:Railroad freight 120 type air control valves Emergency valve
General control circui