Purpose

The purpose of this paper is to study the aerodynamic characteristics and uplift force tendencies of pantographs within the operational height span of 1,600–2,980 mm, aiming to offer valuable insights for research concerning the adaptability of pantograph-catenary systems on double-stack high container transportation lines.

Design/methodology/approach

Eight pantograph models were formulated based on lines with the contact wire of 6,680 mm in height. The aerodynamic calculations were carried out using the SST k-ω separated vortex model. A more improved aerodynamic uplift force method was also presented. The change rule of the aerodynamic uplift force under different working heights of the pantograph was analyzed according to the transfer coefficients of the aerodynamic forces and moments.

Findings

The results show that the absolute values of the aerodynamic forces and moments of the upper and lower frame increase with the working height, whereas those of the collector head do not change. The absolute values of the transfer coefficients of the lower frame and link arm were significantly larger than those of the upper frame. Therefore, the absolute value of the aerodynamic uplift force increased and then decreased with the working height. The maximum value occurred at a working height of 2,400 mm.

Originality/value

A new method for calculating the aerodynamic uplift force of pantographs is proposed. The specifical change rule of the aerodynamic uplift force of the pantograph on double-stack high container transportation lines was determined from the perspective of the transfer coefficients of the aerodynamic forces and moments.

中文翻译：

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双层高集装箱运输线受电弓气动特性研究

 目的

本文旨在研究1600~2980mm作业高度范围内受电弓的气动特性和升力趋势，为受电弓接触网系统在双层高集装箱运输中的适应性研究提供有价值的参考。线。

设计/方法论/途径

根据接触线高度6680mm的线路，制定了8种受电弓型号。使用SST k-ω分离涡模型进行空气动力学计算。还提出了一种更加改进的气动升力方法。根据气动力和力矩的传递系数，分析了受电弓不同工作高度下气动力升力的变化规律。

 发现

结果表明，上下框架的气动力和力矩的绝对值随着工作高度的增加而增大，而受电头的气动力和力矩的绝对值没有变化。下框架和连杆臂的传递系数绝对值明显大于上框架。因此，气动升力的绝对值随着工作高度的增加先增大后减小。最大值出现在工作高度 2,400 毫米处。

 原创性/价值

提出了一种计算受电弓气动升力的新方法。从气动力和力矩传递系数的角度，确定了双层高集装箱运输线路受电弓气动升力的具体变化规律。