新型铁道车辆液气缓冲器动态特性

黄运华; 李芾; 付茂海; 廖小平

新型铁道车辆液气缓冲器动态特性

1.
西南交通大学机械工程学院，四川成都 610031
2.
中国南车集团北京二七车辆厂技术中心产品开发部, 北京 100072

基金项目:

铁道部科技研究开发计划项目 2004J047

详细信息

作者简介:
黄运华(1973-)，男，四川邻水人，西南交通大学副研究员，博士，从事机车车辆系统动力学研究

中图分类号: U270.34
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- 被引次数: 0
出版历程
- 收稿日期: 2005-10-12
- 刊出日期: 2005-12-25

Dynamic characteristic of new hydro-pneumatic buffer for railway vehicle

1.
School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China
2.
Product Department of Technical Center, Beijing Erqi Rolling Stock Works, CSR, Beijing 100072, China

More Information

Author Bio:
Huang Yun-hua(1973-), male, PhD, associate researcher, 86-28-87634032, fjhyhfj@163.com

摘要

摘要: 为了提高货车编组场的安全连挂冲击速度和调车作业的效率, 开发新型铁道车辆缓冲器, 概述了新型铁道车辆液气缓冲器的基本结构及其工作原理, 建立了新型液气缓冲器的列车纵向动力学计算模型, 利用数值模拟方法对液气缓冲器进行了动态特性分析。计算结果表明, 新型液气缓冲器调车冲击时, 在阻抗力不超过2 200 kN时, 容量可以达到160 kJ, 吸收率大于90%, 新型液气缓冲器能使货物列车的紧急制动特性和起动牵引特性满足车辆使用要求, 提高车辆的调车冲击速度, 减缓及耗散列车在运行中车辆间的纵向冲击和振动。
- 铁道车辆 /
- 液气缓冲器 /
- 动态特性 /
- 动力学模型
Abstract: In order to improve the safety-impacting speed of freight organized into groups' spot and manipulating vehicle efficiency, a new type of hydro-pneumatic buffer for railway vehicle was developed, its basic structure and principle were summarized, a lognitudinal dynamics calculating model of train with the buffers was established, the dynamic characteristic of the buffer was analyzed by numerical simulation method. The calculating result shows that the buffer capability may reach 160 kJ, and its absorptivity may exceed 90% in the condition that the biggest impedance force of the buffer is no more than 2200 kN as manipulating vehicle, the impacting speed of manipulating vehicle is increased, the lognitudinal impulsion and libration between vehicles are decreased and dissipated, the hydro-pneumatic buffer may be adapted to the request of heavy loading and speed increasing train.
- railway vehicle /
- hydro-pneumatic buffer /
- dynamic characteristic /
- dynamics model

HTML全文

图 1 基本结构

1-柱塞; 2-气腔; 3-缸体; 4-浮动活塞; 5-油腔②; 6-单向锥阀;7-锥阀节流孔; 8-节流阻尼环; 9-油腔①; 10-节流阻尼棒

Figure 1. Basic structure

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图 2 动力学计算模型

Figure 2. Dynamics calculating model

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图 3 列车纵向动力学模型

Figure 3. Lognitudinal dynamics calculating model of train

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图 4 车辆受力

Figure 4. Bearing force of vehicle

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图 5 准静态特性

Figure 5. Quasi-static state characteristic

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图 6 冲击特性曲线

Figure 6. Impacting characteristic curve

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图 7 最大车钩力沿列车长度的分布

Figure 7. Most coupler force distribution along with train length

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图 8 列车运行速度和距离变化曲线

Figure 8. Changing curves of train running speed and distance

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表 1 最大车钩力及纵向加速度

Table 1. Most coupler force and longitudinal acceleration

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表 2 起动牵引最大车钩力

Table 2. Most coupler force when jump-starting /MN

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