Automatic sand box conveying vehicle for casting line

The utility model discloses an automatic sand box transport vehicle for a casting line, which comprises transmission boxes, a track seat and a collecting box, a connecting rod is fixedly mounted between the transmission boxes, a fixed seat is fixedly mounted at the top of the connecting rod, a sliding rod is mounted on the fixed seat in a penetrating manner, a buffer plate is fixedly mounted at the front end of the sliding rod, and the buffer plate is fixedly mounted on the track seat. Conveying wheels are rotatably installed on the inner side of the transmission box, supporting columns are fixedly installed at the bottom of the transmission box, a bearing plate is fixedly installed between the supporting columns, a collecting box is fixed to the top of the bearing plate in a limiting mode, and a second motor is fixedly installed on the portion, on one side of the collecting box, of the bearing plate; and rail wheels matched with the rail seats are rotationally mounted at the bottoms of the supporting columns