| 摘要 |
PROBLEM TO BE SOLVED: To efficiently clean a guide face of a rail by a simple structure for preventing scattering of iron powder and oil scum in an overhead conveyor constituted such that a roller rolling on the guide face of the rail is supported on an upper part of a trolley connected with a chain moving along the rail and a hanger hanging a workpiece is connected with a lower part of the trolley. SOLUTION: The magnetic roller 29 capable of attracting magnetic powder on the guide face 26 rolls on the guide face 26 in at least either of the front and the rear of the roller 27 along the direction 28 of travel of the trolley 13 and is supported on the trolley.
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