| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a pantograph abnormality detection method capable of detecting wear with steps or the like which is in a portion where there is large trolley wire deviation.SOLUTION: A load applied to a curve trigger tool 45 for supporting a trolley wire T in a rail straight angle direction, is measured. When an absolute value of the load exceeds a predetermined threshold, or increase or decrease of the load exceeds a predetermined threshold, it is determined that there is abnormality on a pantograph.</p> |
