Rare earth crushing device

The utility model relates to the field of rare earth preparation, in particular to a rare earth smashing device which comprises a box fixed to a rack, a feeding port is formed in the upper portion of the box, guide plates are symmetrically arranged on the two sides of the lower portion of the feeding port, and a driving shaft and a driven shaft are arranged on the positions, on the two sides of the lower portions of the guide plates, of the box respectively. Grinding rollers are fixed to the driving shaft and the driven shaft, the driving shaft is driven by a main motor to rotate, the driven shaft is driven by a driven motor to rotate, sliding grooves are formed in the positions, on the two sides of the driven shaft, of the box body, the driven shaft penetrates through the sliding grooves, and sliding blocks are arranged on the two sides of the box body. The two ends of the driven shaft are arranged on the sliding blocks at the corresponding positions and rotationally connected with the sliding blocks, a plur