西华大学学报（自然科学版）2024，Vol.43Issue(5)：59-66,8.DOI:10.12198/j.issn.1673-159X.5259
小半径曲线条件下102车钩连挂特性分析
The Coupling Characteristics Analysis for the 102-Type Coupler Under Tight Radius Curve Conditions
摘要
Abstract
In response to the challenge of difficulty in coupling the 102-Type coupler on tight radius curves,this study focuses on the HXD2 locomotive and establishes a vehicle coupling dynamics model with detailed drawbar representation based on multibody dynamics principles.The research investigates the in-fluence of lateral angle deviations of the drawbar on coupling performance and examines the coupling status under conditions of tight radius curves.Moreover,optimization measures are proposed for the drawbar structure to enhance the stability of coupling on tight radius curves.The results indicate that coupling speed,drawbar opening angle,and curve radius significantly affect the coupling process.Higher speeds and smal-ler drawbar opening angles result in greater coupling impact,especially on curves with smaller radii.Fur-thermore,optimization of drawbar structural parameters reduces coupling shocks.Under the conditions of 5 km/h speed,fully open drawbar positions,and a curve radius of 180 meters,increasing the gap between the buffer block and the drawbar tail frame to 3 mm reduces the maximum contact force by 64%.Increasing it to 5 mm leads to severe oscillations during coupling.Increasing the gap between the drawbar tail and the buffer block to an angle of 3.5°decreases the maximum contact force by 59%,while increasing it to 6.5° causes the drawbar angle to be unsaturated,leading to a lack of restoring torque from the buffer block.Un-der their coupled effect,an angle of 3.4°to 3.6°for the gap between the drawbar tail and the buffer block corresponds to the best matching effect with a gap of 2 to 4 mm between the buffer block and the drawbar tail frame.关键词
小半径曲线/102车钩/HXD2机车/结构参数优化/机车动力学Key words
tight radius curves/102 drawbar/HXD2 locomotive/optimization of structural parameters/vehicle dynamics分类
交通工程引用本文复制引用
曾楷煜,胡晓宇,刘佳璐,王开云..小半径曲线条件下102车钩连挂特性分析[J].西华大学学报（自然科学版）,2024,43(5):59-66,8.基金项目
国家自然科学基金项目(51825504,U19A20110). （51825504,U19A20110）
