The embodiment of the utility model provides a refueling device through set up the fixing base on the base plate, sets up breach portion on the fixing base to setting up the oil outlet in breach portion, and passing convenient being connected with oil supply unit of base plate through a through -hole, on the one hand, lubricating oil is easy spouts to the inner wall of control panel key hole because the oil outlet setting at the breach position, makes, and on the other hand make to supply oil pipe way from bottom plate bottom surface input, therefore the fuel feeding is very convenient because the through -hole link up the base plate.