Control device for construction machinery

The utility model discloses a control device for building machinery, which comprises a workbench, a lifting cylinder is fixedly arranged at a position, close to one side, of the upper surface of the workbench, a sliding seat is movably arranged on the upper surface of the workbench, a sliding rail is fixedly arranged on the lower surface of the sliding seat, and a feeding box is arranged on the upper surface of the sliding seat. A turnover mechanism is connected between the feeding box and the sliding seat and composed of a connecting seat, a rotating shaft and a cushion block, a handrail is fixedly installed on the outer surface of the feeding box, a discharging port is formed in the position, close to one side, of the top of the lifting barrel, and a feeding port is formed in the position, close to the other side, of the bottom of the lifting barrel. A bearing table is fixedly installed at the top of the lifting cylinder, and a fixing base is fixedly installed at the position, closeto the middle, of the upp