| C80型铁路货车制动装置运用性能预测 |
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| 引用本文： | 卢碧红,徐超,郭宏远.C80型铁路货车制动装置运用性能预测[J].交通运输工程学报,2021,21(6):289-297. |
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| 作者姓名： | 卢碧红 徐超 郭宏远 |
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| 作者单位： | 大连交通大学 机械工程学院，辽宁 大连 116028 |
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| 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 |
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| 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。
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| 关 键 词： | 车辆工程 铁路货车 制动装置 性能预测 多体动力学 RecurDyn |
| 收稿时间： | 2021-09-30 |
Operation performance prediction of C80 railway freight car braking device |
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| LU Bi-hong,XU Chao,GUO Hong-yuan.Operation performance prediction of C80 railway freight car braking device[J].Journal of Traffic and Transportation Engineering,2021,21(6):289-297. |
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| Authors: | LU Bi-hong XU Chao GUO Hong-yuan |
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| Affiliation: | School of Mechanical Engineering, Dalian Jiaotong University, Dalian 116028, Liaoning, China |
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| 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. |
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