Mowing hob device for mowing machine

The utility model discloses a mowing hob device for a mowing machine, which belongs to the field of mowing hobs and comprises a power shaft, a driving gear is arranged at the end of the power shaft, limit holes are symmetrically formed in the surface of the power shaft and are uniformly distributed by taking the limit of the power shaft as a circle center, mounting plates are symmetrically arranged on the surface of the power shaft through bearings, and the mounting plates are connected with the driving gear through bearings. The two mounting discs are arranged between the two driving gears, rotating columns are evenly arranged on the arc surfaces of the outer sides of the mounting discs through bearings, clamping grooves are formed in the surfaces of the ends, away from the mounting discs, of the rotating columns, blades are clamped between the two clamping grooves, and locking bolts are screwed to one ends of the rotating columns. The rotary columns capable of rotating are evenly arranged on the surfaces of