Double-roller sand making machine with jamming dredging mechanism

The utility model relates to a double-roller sand making machine with a jam dredging mechanism, which comprises a rack and a stone moving structure, the rack is provided with two crushing rollers and a driving structure for driving the crushing rollers to rotate, each crushing roller comprises a rolling cylinder and a main shaft, a rolling gap is formed between the two rolling cylinders, and the main shaft is connected with the crushing rollers. The crushing rollers are connected with the rack through the main shaft, the stone moving structure comprises a plurality of shifting pieces which are distributed in the axial direction of the crushing rollers, located between the two crushing rollers and connected with the rack through a swing shaft, and a shifting piece driving mechanism for driving the shifting pieces to swing with the swing shaft as the axis; the swing shaft horizontally extends in the direction perpendicular to the smashing roller. The utility model aims to further provide the double-roller sand