C80型铁路货车制动装置运用性能预测

卢碧红; 徐超; 郭宏远

doi:10.19818/j.cnki.1671-1637.2021.06.023

C80型铁路货车制动装置运用性能预测

doi: 10.19818/j.cnki.1671-1637.2021.06.023

大连交通大学机械工程学院，辽宁大连 116028

基金项目:

国家自然科学基金项目 51875073

辽宁省教育厅科学技术研究项目 JDL2017036

详细信息

作者简介:
卢碧红(1961-)，女，四川合江人，大连交通大学教授，工学博士，从事质量工程与车辆性能改善研究

中图分类号: U270.1
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- 被引次数: 0
出版历程
- 收稿日期: 2021-09-30
- 网络出版日期: 2022-02-11
- 刊出日期: 2021-12-01

Operation performance prediction of C80 railway freight car braking device

School of Mechanical Engineering, Dalian Jiaotong University, Dalian 116028, Liaoning, China

Funds:

National Natural Science Foundation of China 51875073

Science and Technology Research Project of Education Department of Liaoning Province JDL2017036

More Information

Author Bio:
LU Bi-hong(1961-), female, professor, PhD, bhlu@djtu.edu.cn

摘要

摘要: 运用现场试验与多体动力学仿真相结合的方式，提出一套反映C80单元制动装置真实接触状态的建模与模型验证方法；运用RecurDyn仿真分析平台，通过仿真试验分析法对制动装置的运用性能进行分析预测。研究结果表明：闸瓦靠近轮缘一侧的接触应力较大，2、3位闸瓦下部应力较大，易引起闸瓦偏磨；制动梁立柱连接处存在较大应力，游动、固定杠杆连接部位最大瞬时接触应力分别为137和127 MPa；C80单元制动装置中12号和15号销轴受力最大，在空车与重车制动时销轴所受合力分别超过10和50 kN，现场检修时应着重检查游动杠杆、中拉杆、固定杠杆、制动梁立柱和立式制动杠杆及其连接部；动态运行时，制动梁朝着车辆运行反向窜动导致闸瓦与车轮异常间歇性碰撞接触，且随着运行速度增大轮瓦接触力有增大趋势，易导致车轮非正常磨耗和闸瓦偏磨。研究方法为预测铁路货车制动装置等复杂机构的运行规律与性能预测提供一种新技术，可用于指导C80等铁路货车制动装置的运用检修规程制定与设计改善。
- 车辆工程 /
- 铁路货车 /
- 制动装置 /
- 性能预测 /
- 多体动力学 /
- RecurDyn
Abstract: Based on a combination of field tests and multi-body dynamics simulations, a set of modeling and model verification methods reflecting the actual contact state of a C80 unit braking device were developed, the RecurDyn simulation analysis platform was used, and the operation performance of the braking device was analyzed and predicted using the simulation analysis and experimental methods. Research results show that the contact stress on the side near the flange of brake-shoe is high, and the stresses on the lower parts of brake-shoes 2 and 3 are high, causing a significant eccentric wear of the brake-shoe. High stress exists at the braking beam-column connection, and the maximum instantaneous contact stresses of the connection parts of the floating and fixed levers are 137 and 127 MPa, respectively. The forces on pin shafts No.12 and 15 in the C80 unit braking device are the highest. When applying brakes for empty and heavy vehicles, the combined forces on the pin shafts exceed 10 and 50 kN, respectively. During on-site maintenance, the inspection of floating lever, middle tie rod, fixed lever, braking beam-column, vertical braking lever, and their connection parts should be conducted. During dynamic operation, the braking beam moves in the reverse direction toward the vehicle, causing abnormal intermittent collision and contact between the brake-shoe and the wheel. The contact force of the wheel shoe increases with the increasing running speed, resulting in the abnormal wear of the wheel and the eccentric wear of the brake-shoe. This research proposes a new technique for predicting the operation rule and performance of railway freight car braking devices and other complex mechanisms. The proposed method can be applied in the formulation and design improvement of C80 and other braking devices of railway freight cars. 2 tabs, 13 figs, 29 refs.
- vehicle engineering /
- railway freight car /
- braking device /
- performance prediction /
- multi-body dynamics /
- RecurDyn

HTML全文

图 1 C80单元制动装置

Figure 1. C80 unit braking device

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图 2 现场试验制动缸压强

Figure 2. Braking cylinder pressures in field test

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图 3 制动装置建模流程

Figure 3. Modelling flow for braking device

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图 4 制动装置仿真模型

Figure 4. Simulation model of braking device

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图 5 制动缸压力曲线

Figure 5. Force curves of braking cylinder

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图 6 单元制动装置刚柔耦合模型

Figure 6. Rigid-flexible coupling model of unit braking device

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图 7 空车制动闸瓦应力分布

Figure 7. Stress distributions of brake-shoes for empty car

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图 8 重车制动闸瓦应力分布

Figure 8. Stress distributions of brake-shoes for heavy car

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图 9 各杠杆应力分布

Figure 9. Stress distributions of each lever

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图 10 制动装置销轴编号

Figure 10. Numbering of braking device pin shafts

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图 11 各销轴所受合力

Figure 11. Resultant forces of each pin shaft

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图 12 闸瓦与车轮异常接触

Figure 12. Abnormal contact between brake-shoe and wheel

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图 13 闸瓦压力与车轮角速度曲线

Figure 13. Curves of brake-shoe force and wheel angular velocity

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表 1 现场试验闸瓦压力

Table 1. Brake-shoe forces in field test kN

工况	闸瓦压力
工况	1位	2位	3位	4位
空车	4.70	4.90	4.90	4.80
重车	19.75	20.05	19.90	19.65

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表 2 仿真试验闸瓦压力

Table 2. Brake-shoe forces in simulation test kN

工况	闸瓦压力
工况	1位	2位	3位	4位
空车	4.70	5.10	5.00	4.80
重车	19.30	20.00	20.40	19.90

下载: 导出CSV

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