Impact crusher plate hammer

The utility model relates to a plate hammer of an impact crusher. The plate hammer comprises a hammer body, a first hammer head, a second hammer head, a plurality of first ceramic matrix composite material blocks, a plurality of second ceramic matrix composite material blocks, a plurality of third ceramic matrix composite material blocks and a plurality of fourth ceramic matrix composite material blocks, the first hammer head is arranged on the first side face of the hammer body, the second hammer head is arranged on the second side face of the hammer body, and the first side face and the second side face of the hammer body are a set of opposite side faces. The first ceramic-based composite material block and the second ceramic-based composite material block are arranged in the first hammer head at intervals in the length direction of the hammer body and are parallel to the first side face of the hammer body; and the third ceramic-based composite material block and the fourth ceramic-based composite material