Ore crusher

The utility model discloses an ore crusher which comprises a crusher shell, a rotating shaft is arranged in the crusher shell, a plurality of clamping grooves are evenly formed in the rotating shaft, and casting plates are rotationally connected into the clamping grooves. A first striking block, a second striking block and a third striking block are arranged on the inner wall, located at the upper end of the rotating shaft, of the crusher shell, a buffer assembly is arranged between the casting plate and the rotating shaft, and an adjusting assembly is arranged between the second striking block and the crusher shell and between the third striking block and the crusher shell. Through the arrangement of a casting plate on a rotating shaft and the arrangement of a first striking block, a second striking block and a third striking block, ores with different weights can be subjected to multi-stage striking and crushing, and then the angles of the second striking block and the third striking block can be adjusted t