陇海线洛阳—三门峡段低净空隧道接触网导线高度的改造

Reconstruct to Low Headroom Tunnel of Contact Line Conduct WireHeight in Luoyang to Sanmenxia of Longhai Line

洛阳—三门峡段部分隧道内接触网导线高度低于《技规》要求 5 70 0mm ,最低达 5 45 0mm ,严重影响机车取流和列车运行速度。为改变这种制约提速列车运行的现状 ,经过反复研究试验 ,最后制定出了隧道内抬高接触网导线高度的有效方案 ,并且研制出了“定位过渡连接板”、“悬挂增高板”、“双U型悬吊滑轮”等有关配件 ,将隧道内原简单悬挂改为链型悬挂 ,导线高度提高到了 5 70 0mm ,对机车取流、便于运营维修等方面效果十分明显 ,提高了运输能力。

Parts of contact line conduct wire height in the tunnel of Luoyang to Sanmenxia are lower than the requirement of《Technical Criterion》.The lowest part is up to 5 45 meters.The condition has a serious effect on absorbing current of locomotive and running speed of trains.In order to change the actuality that restricts the speeding trains run,by researching and testing over and over,established the effective design that drive up wire height of contact line finally.And developed related fittings of“Location Transition Linked Board”,“Suspending Heighten Board”,“Double-U Model Suspensory Pulley”.Changed the simple suspension into the chain suspension The wire height was heightened to 5 7 meters.Obtained obvious purpose at the aspect of absorbing current of locomotive and operating and maintenance conveniently.Improved the transport capability.