Cutter head for ensilage machine

The utility model belongs to the technical field of ensilage machines, and particularly relates to a cutter head for an ensilage machine, which comprises a rack arranged right in front of the ensilage machine, the motor assembly comprises a driving motor fixedly installed on the top of the rack and a rotating shaft fixedly connected with the output end of the driving motor and vertically and rotationally connected into the rack, and the outer side of the rotating shaft is fixedly sleeved with a first cutter head, a second cutter head and a third cutter head from bottom to top. According to the cutter head for the ensilage machine, the fan-shaped discs and the extension blocks are fixed in the fixing grooves formed in the outer side of the annular ring through second fixing bolts, the second fixing bolts are inserted into the annular ring and the extension blocks in a threaded mode, and when part of the fan-shaped discs are abraded, the extension blocks can be taken down after the second fixing bolts are detac