有限要素法を用いた電車線コネクタの疲労寿命推定手法

摘要

Connectors between the contact wire and the messenger wire are always subject to fatigue damage due to vibrations caused by the passage of pantographs. However, in the conventional evaluation method of the vibration durability of the connector, actual vibration wave forms of overhead lines such as the contact wire and the messenger wire are not reproduced, and the dynamic characteristics of the connector depending on the shape and type of lead wire are not considered. The authors estimated the strain of the lead wire of connector by the finite element vibration analysis, and obtained the fatigue property curve of the lead wire by the rotary bending fatigue test. From these results, a fatigue life estimation method of connector against the actual vibration wave forms of over head lines has been newly developed.%電気鉄道の電車線設備において，トロリ線やちょう架線などの線条間を電気的に接続するコネクタは，一般的に銅より線を用いたリード線とィヤーおよびクランプで構成されている。現場におけるコネクタの主な不具合は，パンタグラフ通過時の電車線振動に伴うコネクタリード線の疲労断線であり，抜本的なコネクタ疲労対策ゃ耐疲労性を有するコネクタの開発が求められている。