Threshing and cleaning device of rice combine harvester

The utility model discloses a threshing cleaning device for a rice combine harvester, which comprises a thrasher body, a first cylinder installed on the thrasher body, a first concave plate positioned below the first cylinder and a first cylinder cover positioned above the first cylinder, wherein a vibrating screen is arranged below the first concave plate, an impurity removal fan is arranged at the front end of the vibrating screen, a second cylinder is installed on the thrasher body, the second cylinder and the first cylinder are arranged in tandem, a second concave plate is arranged below the second cylinder, a second cylinder cover is arranged above the second cylinder, a transition plate is arranged between the first concave plate and the second concave plate, the position of the transition plate corresponds to the discharging section of the first cylinder and the feeding section of the second cylinder, in addition, a grass discharging opening is also arranged at the rear side of the thrasher body, and a grass discharging device is arranged at the grass discharging opening. The threshing cleaning device can better solve the problems that the rice cannot be fully threshed, the loss is high, the seed breakage occurs, and the like.