Automatic material conveying trolley for cantilever crane production line

The utility model relates to an automatic material conveying trolley for a cantilever crane production line. The automatic material conveying trolley has the advantages of being accurate and controllable in moving distance, high in safety, high in work efficiency and stable in performance. The technical scheme is that the automatic material conveying trolley for the cantilever crane production line comprises a trolley frame, a plurality of groups of idler wheels and longitudinal driving mechanism, the idler wheels are installed at the bottom end of the trolley frame and matched with a rail, and the longitudinal driving mechanism is used for driving the trolley frame. The automatic material conveying trolley for the cantilever crane production line is characterized in that a plurality of groups of lifting centering mechanism for lifting cantilever cranes are arranged at the top end of the trolley frame, walk brake mechanism are further arranged at the bottom ends of the two sides of the trolley frame respectively, and the longitudinal driving mechanism can drive the trolley frame through a rack and pinion mechanism.