Crushing and crushing device capable of aiming at sizes of grease blocks

The utility model relates to the technical field of grease block smashing and crushing, in particular to a smashing and crushing device aiming at the size of grease blocks, which comprises a box body and a box cover, a middle rotating shaft is rotatably arranged at the symmetrical position of the middle of one side wall of the box body in a penetrating mode, and rotatable upper rotating shafts are longitudinally and slidably arranged at the symmetrical positions above the middle rotating shaft on the same side wall of the box body. And the two upper rotating shafts can be locked at the positions of the side walls of the box body through upper positioning assemblies, and rotatable lower rotating shafts are longitudinally and slidably arranged at the symmetrical positions, located below the middle rotating shaft, of the same side wall of the box body. In the process of crushing and crushing grease blocks from top to bottom, the three crushing sheets with different heights are used for crushing and crushing the