120型控制阀主阀结构设计

2.1 空气控制阀的发展 ...
2.2 制动装置 ... 2.2.1 制动装置 ... 2.2.2 制动装置的特点 ... 2.3 制动机的分类 ...
第三章 120 型控制阀控制原理及其结构设计 ...
3.1 120 控制阀的组成及特点 ... 3.2 120 控制阀的作用原理 ... 3.2.1 充气缓解位 ... 3.2.2 减速充气缓解位 ... 3.2.3 常用制动位 ... 3.2.4 制动保压位 ... 3.2.5 紧急制动位 ... 3.3 120 控制阀的构造 ... 3.3.1 中间体 ... 3.3.2 主阀 ... 3.3.3 半自动缓解阀(简称缓解阀) ... 3.3.4 紧急阀 ... 3.4 120 控制阀主阀部结构设计 ... 3.4.1 橡胶原件 ... 3.4.2 弹簧计算 ...
Keywords：120 main valve; train brake; type 705 experiment platforms; research on the capability
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南京工程学院车辆工程系本科毕业设计（论文）
目
第一章 绪 论 ...
1.1 引言 ... 1.2 选题背景与意义 ...
摘
要
由于经济的迅猛发展，资本在全球市场内的流通，跨区域间的合作愈加密 切， 铁路运输压力越来越大。现代机车正向着―多拉快跑‖的方向发展，列车的 制动技 术在铁路的发展中也变的尤为重要。论文首先介绍了制动的相关知识，包 括 120 阀的制动原理；然后分析了 120 型控制阀的构造，并进行 120 型空气控 制阀主阀 部的结构设计；最后以 120 控制阀为研究对象，705 试验台为平台， 进行了 120 控制阀的性能试验研究。通过对试验数据的分析，可以得知 120 型 空气控制阀的 各项指标是否符合国家标准。 试验结果表明，120 型控制阀主阀部在实际应用中仍具有较高的可靠性。性 能 试验中出的主阀故障现象也可以作为 120 阀在铁路运用中可能出现的故障提 供参考，分析试验中的故障原因也可以作为实际检修中的借鉴。同时发现，现有 705 型试验台上有关 120 型阀的评价体系中还有不妥当，还有需要改进的地方。
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录
1 1 1 2 2 2 2 2 2 2 3 4 4 5 5 6 7 8 8 9 9 9 . 13 .. 14 . 16 . 16 . 17 . 20 ... 20 .. 20 . 22 .. 24
第二章
铁路货车概况 ...
2.1.1 国外重载货物列车空气制动机简析 ... 2.1.2 国内重载货物列车空气制动阀概述 ...
关键词: 120 型控制阀；列车制动；705 试验台；性能试验
I
南京工程学院车辆工程系本科毕业设计（论文）
ABSTRACT
Due to the rapid economic development and the flow of capital in the global market, the cross-regional cooperation is becoming much closely which increases the railway transport pressure. Modern locomotive is going towards the direction of ―carry more and run faster ", the train's braking technology is particularly important in the development of the railway. In this paper, The braking-related knowledge is introduced first, including the braking principle of 120 valves. After analyzing the structure of the type 120 control valve, design the structure of the main Department of 120 valves. Finally, use 120 control valves for the study and the 705 test bed as a platform to simulate the working status of 120 control valves and problems that may arise. Through the analysis of experimental data, to check if the sensitivity of the 120 air control valve is meet with national standards. The test results show that the main department of 120 the control valve still has a higher reliability in practical applications. The main department of valve failure in the simulation experiments can also be a reference that may occur in the railway. Analyze the reasons for the failure in the test can be used as a reference in the actual repair. Also there is something need to improve of the evaluation system which the existing 705-type test stands about 120 of the valve