Research on matching of 102-type coupler with secondary suspension parameters of heavy-haul locomotives

MA Qun; SHENG Longjiang; YAO Yuan; WANG Shanshuo; ZHONG Wensheng

doi:10.13890/j.issn.1000-128X.2023.06.008

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Research on matching of 102-type coupler with secondary suspension parameters of heavy-haul locomotives

Railway Rolling Stock | 更新时间：2024-08-02

- Research on matching of 102-type coupler with secondary suspension parameters of heavy-haul locomotives
- Electric Drive for Locomotives Issue 6, Pages: 63-70(2023)
- 作者机构：
  
  1.西南交通大学轨道交通运载系统全国重点实验室，四川成都　　610031
  2.中车株洲电力机车有限公司重载快捷大功率电力机车全国重点实验室，湖南株洲　　412001
- 作者简介：
- 基金信息：
- DOI：10.13890/j.issn.1000-128X.2023.06.008
  CLC： U260.34
- Published：10 November 2023，
  
  Received：14 July 2023，
  
  Revised：26 October 2023，
- 稿件说明：
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马群, 沈龙江, 姚远, 等. 102型车钩与重载机车二系悬挂参数匹配研究[J]. 机车电传动, 2023(6): 63-70.

MA Qun, SHENG Longjiang, YAO Yuan, et al. Research on matching of 102-type coupler with secondary suspension parameters of heavy-haul locomotives[J]. Electric drive for locomotives,2023(6): 63-70.
马群, 沈龙江, 姚远, 等. 102型车钩与重载机车二系悬挂参数匹配研究[J]. 机车电传动, 2023(6): 63-70. DOI： 10.13890/j.issn.1000-128X.2023.06.008.

MA Qun, SHENG Longjiang, YAO Yuan, et al. Research on matching of 102-type coupler with secondary suspension parameters of heavy-haul locomotives[J]. Electric drive for locomotives,2023(6): 63-70. DOI： 10.13890/j.issn.1000-128X.2023.06.008.

摘要

机车二系悬挂参数对重载车钩受压稳定性影响显著，为了探究102型车钩与重载机车二系悬挂参数的合理匹配，文章利用 SIMPACK软件建立了详细的102车钩与 HXD1 型八轴重载机车组成的双机重联动力学模型，分析了不同计算工况下车钩力学特性与重载机车的安全性能；对比了不同车钩自由角及纵向力作用下，二系悬挂参数对机车安全性的影响。结果表明：当纵向压力较小时车钩转角稳定在自由角，机车轮轴横向力随车钩自由角及机车二系悬挂横向刚度增大而增大，与车钩纵向力无关。当纵向车钩压力增大到车钩需克服复原块预压缩载荷发生偏转时，车钩转角进一步增大，此时适当增加机车二系横向刚度有利于车钩稳定且影响较小。为保障制动工况下列车的运行安全，建议控制车钩自由角在6°以内，转向架单侧二系横向刚度范围在0.45~0.60 kN/mm；二系横向止挡间隙选择35 mm自由间隙及5 mm弹性间隙。

Abstract

The secondary suspension parameters of locomotives have a significant influence on the stability of heavy-haul couplers under compression. This paper aimed to explore the reasonable matching between 102-type couplers and the secondary suspension parameters of heavy-haul locomotives. A detailed two-locomotive dynamics model was established by using SIMPACK software

incorporating a 102-type coupler and HXD1 eight-axle heavy-haul locomotives. The mechanical characteristics of the coupler and the safety performance of the heavy-haul locomotives were analyzed under different calculation conditions. Moreover

the influence of secondary suspension parameters on locomotive safety was compared at different coupler free angles and under varying longitudinal forces. The results indicate that at low longitudinal pressure

the coupler angle stabilizes at a free angle

and the lateral force on the locomotive's wheel axles increases with an increasing free angle of the coupler and a higher lateral stiffness of the secondary suspension. This relationship was independent of the longitudinal force of the coupler. As the longitudinal coupler pressure increases

resulting in deflection to overcome the pre-compression load of the restoration block

the coupler angle further increases. At this stage

an appropriate increase in the lateral stiffness of the secondary suspension helped to maintain coupler stability along with just a minimal impact. In order to secure safe train operation in braking conditions

it is recommended to control coupler free angles within 6°

and set the lateral stiffness of the secondary system on a single side of bogies within the range of 0.45-0.60 kN/mm. Additionally

the recommended secondary lateral stop clearance includes a 35 mm free clearance plus a 5 mm elastic clearance.

关键词

重载机车102车钩压钩稳定性参数优化车钩自由角止挡间隙

Keywords

heavy-haul locomotive102-type couplerstability of coupler under compressionparameter optimizationcoupler free anglestop clearance

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