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在机车斜牵引拉杆复杂的运动学分析中，采用了极限位移方法来分析机车内部各种相对运动对斜牵引拉杆的运动影响，可以把机车复杂的运动特性抛开，使用常规的数学手段就可以完成分析计算工作。本文介绍了运用该方法的３ 个主要步骤：①单项极限运动状态描述；②极限运动对分析对象的单项影响分析；③最大耦合极限运动对分析对象的综合影响分析。该方法同样适用于机车水平牵引拉杆的运动学分析。
In the complex kinematics analysis of locomotive oblique traction link, the limit displacement method is adopted to analyze the influence of various relative motions inside the locomotive on the movement of the diagonal traction link. The complex locomotion characteristics of the locomotive can be thrown away, and the conventional mathematical methods can be used Complete analysis and calculation work. This paper presents three main steps to apply this method: ① the description of the single state of extreme sports; ② the single influence analysis of the extreme sports on the analysis object; ③ the comprehensive influence analysis of the maximal coupled extreme sports on the analysis objects. The method is also applicable to the kinematics analysis of locomotive horizontal traction rod.