Multi-stage crushing device of turbine crusher

The multi-stage crushing device comprises a machine base, a crushing box is arranged on the machine base, a feeding hopper is arranged at the top of the crushing box, a worm gear and a crushing blade are arranged at the upper end and the lower end in the crushing box respectively, a crushing shaft is connected with an output shaft of a crushing motor, a plurality of scraping pieces are arranged on the crushing shaft, and the scraping pieces are arranged on the crushing shaft. The scraping blade is located below the crushing blade, a damping assembly connected with the crushing shaft is arranged on the machine base, the damping assembly comprises a motor mounting plate rotationally connected with the crushing shaft, a crushing motor is mounted on the motor mounting plate, and damping columns are arranged on the two sides of the crushing motor; the two ends of the damping column are fixedly connected with the motor mounting plate and the bottom of the machine base correspondingly. Materials are cut into small b