Sand making machine convenient to disassemble and assemble

The sand making machine convenient to disassemble and assemble comprises a supporting column, a first crushing box is arranged at the top of the supporting column, a second crushing box is arranged at the top of the first crushing box, and a first crushing device is arranged on one side of the second crushing box. The first crushing device comprises a mounting plate, a first driving motor, a connecting block, a crushing hammer, a crushing cutter and a limiting groove, the mounting plate is fixedly mounted on the outer wall of the second crushing box, the first driving motor is arranged at the top of the mounting plate, one side of the first driving motor is connected with the connecting block through an output shaft, and the limiting groove is formed in one side of the connecting block. According to the sand making machine convenient to disassemble and assemble, when the breaking hammer or the breaking knife is damaged, the breaking hammer or the breaking knife can be conveniently disassembled in a targeted m