Anti-blocking automatic control device and control method for crusher

The invention discloses an anti-blocking automatic control device and control method for a crusher. The anti-blocking automatic control device comprises an ore feeder, the crusher and a controller, and a blocking clearing structure is arranged in the crusher; the ore feeder and the blockage clearing structure are electrically connected with the controller; the crusher comprises a shell, a first crushing part and a second crushing part; the first crushing part comprises a first toothed plate and a first roller; the second crushing part comprises a second toothed plate and a second roller; the unblocking structure comprises a first power part and a second power part, the first power part comprises a rotating shaft, a first bevel gear, a second bevel gear, a third bevel gear and a fourth bevel gear, the first bevel gear and the second bevel gear are arranged at the end of the first roller and the end of the second roller respectively, and the third bevel gear is meshed with the first bevel gear; the second bevel