Dust cleaning device for feed straw cutter

The utility model discloses a dust cleaning device for a feed straw cutter. Key points of the technical scheme of the utility model are that: a vibration sieve is arranged below a sieve plate of the feed straw cutter; the middle part of a connecting lever is hinged with a frame; one end of the connecting lever is hinged with the right end of the vibration sieve; the lower end of a first connecting rod is hinged with the other end of the connecting lever; the upper end of the first connecting rod is hinged with a pin shaft on the end face of a rotating wheel on the frame; the rotating wheel is opposite to a motor belt wheel on the frame; the lower end of another connecting rod is hinged with the left end of the vibration sieve; the upper end of another connecting rod is hinged with the frame; and the vibration sieve is kept in an oblique state in which the right end is higher and the left end is lower. Compared with the prior art, the dust cleaning device has the remarkable advantage of small content of feed g