Small agricultural machine function expanding device

The utility model discloses a small agricultural machine function expanding device. A reed A and a reed B are of a rectangular structure with the same outline. Screen holes with the height 1/3-1/2 of the height of the reed A and the reed B are formed in the lower edge of the reed A and the lower edge of the reed B by 5-20 mm, one end of the reed A and one end of the reed B are fixedly connected in an included angle ranging from 40 degrees to 80 degrees, the other end of the reed A is hinged to an overturning piece A, and the other end of the reed B is hinged to an overturning piece B. The overturning piece A and the overturning piece B are rectangular metal plates, the height of the overturning pieces is equal to the height of the screen holes, the simple structure of the overturning pieces is matched, the small agricultural machine function expanding device is suitable for field leveling operation, the ploughing, irrigating and other functions are combined, and the equipment utilization efficiency is effectively improved. The small agricultural machine function expanding device further comprises a positioning plate, the strength of the overturning piece A and the overturning piece B is increased, a V-shaped face is formed when the overturning piece A and the overturning piece B are opened, the amount of land surface layer soil is increased during ploughing, and the land fertile efficiency is improved.