光切断法を適用したトロリ線断面形状測定の基礎研究

摘要

トロリ線はパンタグラフのしゅう動により摩耗するため，定期的な摩耗測定が必要である。トロリ線の摩耗は残存直径により管理され，電気検測車による測定が行われている。電気検測車では，トロリ線摩耗測定手法として，しゅう動面幅を検出し残存直径に換算する手法が用いられている。%A wear measurement of the contact wire is one of the most important tasks of maintenance operation of the contact line for the electric railways, because the excessively worn contact wire has a risk of breakage. The contact wire wear is managed by the measurement of its residual diameter. The diameter is generally calculated from the measured width of the sliding surface in the case of use of an electric inspection car. However there are raised problems of measurement error in the case where the sliding surface is not flat or there are scratches around the surface. We proposed a method to measure the profile of the contact wire with the light section method. The effectiveness of the proposed method was confirmed by the field tests.