| 摘要 |
The present invention relates to a device for maintaining a trolley bar, capable of allowing a user to safely maintain a trolley bar supplying power to an overhead traveling crane. The device for maintaining a trolley bar includes a maintenance frame which inspects the trolley bar while moving along a driving rail installed on the upper side of the trolley bar supplying power to the crane; a driving unit moving the maintenance frame by being installed in the maintenance frame; an auxiliary rail installed along the driving rail by being separated from the driving rail; and a balance maintaining unit maintaining the balance of the maintenance frame and connecting the auxiliary rail and the maintenance frame. |
