| 摘要 |
PURPOSE: A brush uneven wear preventive device of a pantagraph is provided to extend the life in use by preventing the concentrated uneven wear of a brush contacting with a trolley bar, to exchange the brush while communicating with the trolley bar, and to notify a driver of the exchange time of the brush. CONSTITUTION: In crane equipment equipped with a main crane(45) having several pantagraphs(1) supplied electric power from a trolley bar(3), a brush uneven wear preventive device of a pantagraph and a traveling motor(44) rotating a traveling wheel(41) on a traveling rail(47), a brush uneven wear preventive device comprises: a converting unit(10) provided with a driven gear(13) engaged with a driving gear(11) fitted to a driving shaft(18) of the traveling motor and a joint shaft(12) rotated, when the main crane travels, and converting rotational motion into rectilinear motion by connecting a crank shaft(15) to several crank units(14a,14b) folded in U - shape on the middle of the length of the joint shaft; and a main body(30) connected to the other side of the crank shaft and provided with a door frame(31) assembled to be slidable to upper and lower sliding bars(33b) fitted between a pair of upper and lower end stoppers(34a,34b) respectively and several pantabases(32) fixed with the pantagraphs on the door frame.
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