压钩力作用下六轴重载机车曲线通过安全性研究

doi:10.16265/j.cnki.issn1003-3033.2018.S1.009

中国安全科学学报 ›› 2018, Vol. 28 ›› Issue (S1): 46-52.doi: 10.16265/j.cnki.issn1003-3033.2018.S1.009

压钩力作用下六轴重载机车曲线通过安全性研究

刘朝辉^1,2 工程师, 刘鹏飞³ 讲师, 薛凯³, 封全保⁴ 教授级高工

1 北京交通大学交通运输学院, 北京 100044
2 国家铁路局安全监察司, 北京 100891
3 石家庄铁道大学机械工程学院,河北石家庄 050043
4 清华大学天津高端装备研究院, 天津 300450

收稿日期:2018-03-02 修回日期:2018-05-07 出版日期:2018-06-30 发布日期:2020-11-20
作者简介:刘朝辉 (1974—),男,河北定州人,博士研究生,工程师,主要从事交通运输规划与管理方面的研究。E-mail:liuzhoahui833@163.com。

Research on curving safety for six-axle heavy-haul locomotive under coupler compressive force

LIU Zhaohui^1,2, LIU Pengfei³, XUE Kai³, FENG Quanbao⁴

1 School of Traffic and Transportation, Beijing Jiaotong University, Beijing 100044, China
2 Department of Safety Supervision, National Railway Administration, Beijing 100891, China
3 School of Mechanical Engineering, Shijiazhuang Tiedao University, Shijiazhuang Hebei 050043, China
4 Tianjin Research Institute for Advanced Equipment, Tsinghua University, Tianjin 300450, China

Received:2018-03-02 Revised:2018-05-07 Online:2018-06-30 Published:2020-11-20

摘要/Abstract

摘要： 为确保六轴重载机车在纵向承压作用下的曲线通过安全性,针对HXD型六轴重载机车,基于多体动力学理论,建立相应的动力学仿真分析模型,模型中充分考虑车钩的复原能;将2节机车作为牵引单元,研究机车惰行及承受压钩力工况下的通过曲线性能。结果表明:惰行工况下,当车钩自由摆角在1~4°内变化时,机车的各动力学指标均满足安全性要求;在2 MN压钩力作用下通曲线轨道时,自由摆角的增加不利于机车的安全运行;自由摆角在4°时一位轮对的轮轴横向力已超过安全限值,一位和六位轮对的轮重减载率也接近安全限值,因此,应尽量将车钩自由摆角限制在3.5°以内。

关键词: 重载机车, 车钩, 自由摆角, 多体动力学, 安全限值

Abstract: To guarantee the curving safety of six-axle heavy-haul locomotive subjected to the coupler compressive force, the dynamic model of HXD locomotive was established based on the theory of multi-body dynamics. In the model, the restoring ability of coupler was considered. Taking the two connected locomotives as research objects, the curving performances in the idling case and that under the coupler compressive force were analyzed. The results show that the dynamic indices can meet the safety requirements as the locomotives run without large coupler forces. Once the 200 ton coupler force is applied in the locomotives negotiating a curved track with 300 m radius, the running safety will be threatened with the coupler free swing angle increasing. If the free swing angle reaches 4°, the wheel set lateral force exceeds the safety limit value and the wheel-load reduction rate is also close to the limit value. The coupler free swing angle should be limited within 3.5°.

Key words: heavy-haul locomotive, coupler, free swing angle, multi-body dynamics, safety limit value

中图分类号:

X924.4

刘朝辉, 刘鹏飞, 薛凯, 封全保. 压钩力作用下六轴重载机车曲线通过安全性研究[J]. 中国安全科学学报, 2018, 28(S1): 46-52.

LIU Zhaohui, LIU Pengfei, XUE Kai, FENG Quanbao. Research on curving safety for six-axle heavy-haul locomotive under coupler compressive force[J]. China Safety Science Journal, 2018, 28(S1): 46-52.

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压钩力作用下六轴重载机车曲线通过安全性研究

Research on curving safety for six-axle heavy-haul locomotive under coupler compressive force

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