| 摘要 |
PURPOSE: A trolley bar is provided to prevent an accident due to contact between a support and a line by forming the support made of synthetic resin materials. CONSTITUTION: A trolley bar(20) comprises a frame(21) and a shoe(22). A frame is arranged on an insulator. The shoe is arranged on the frame in a length direction. A plurality of insertion grooves(110) are formed on the upper surface of the shoe with a constant interval. A cut member(120) is combined with the insertion groove with adhesive. The cut member is made of graphite materials. If a pantograph shoe moves on the shoe, the cutting member cuts a line.
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