Stacking machine

The stacking machine comprises a cushion frame, two rails and a four-wheel rail trolley, a lifting frame and a door frame are arranged at the upper end of the four-wheel rail trolley, a first driving structure is fixedly arranged at the upper end of the lifting frame, and the upper end of the first driving structure is in transmission connection with a connecting structure and a supporting structure. The two supporting structures are arranged at the left end and the right end of the connecting structure in an engaged mode correspondingly, a supporting and placing structure is installed at the upper end of the first driving structure, and a second driving structure is arranged between the supporting and placing structure and the connecting structure. In the process that goods are moved into the three-dimensional goods shelf from the stacking machine, the weight of the goods is distributed on the three-dimensional goods shelf and the stacking machine through the supporting and placing structure, the connecting