| 摘要 |
PROBLEM TO BE SOLVED: To let fall abrasion powder generated at current collection from slits to prevent the abrasion powder from being deposited in an insulation cover of nearly U-section covering a conductor except the sliding faced by forming slits on a wall part forming an opening adjacent to the conductor sliding face and inserted therein a collecting brush. SOLUTION: An insulated trolley line which is frequently used for an automatic carrying device in a production plant is constituted by covering a band plate shaped conductor 11 with an insulation cover 21 of nearly U-shaped section extrusion moldings. This insulation cover 21 is provided so as to cover the conductor 11 except the sliding face 12, provided with wall parts 22 adjacent to the sliding face 12 and projecting from both sides, and an opening 23 to be inserted therein a collecting brush is formed between the wall parts 22. In such trolley wire, slits 24... vertically pentrating are continuously formed at fixed intervals in the lengthwise direction on the wall part 22 laterally extending on the underside of the insulation cover 21. Hereby abrasion powder generated at current collection can be surely let fall from the slits 24.
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