Corn harvesting safe threshing device for agricultural machine

A safe corn harvesting threshing device for agricultural machinery relates to the technical field of equipment for agricultural production and comprises a main body, a threshing component is further fixedly arranged in the main body, a sorting box is fixedly connected to the lower portion of the threshing component, a discharging bin is arranged on the upper side of the sorting box, a discharging mechanism is arranged at the bottom of the discharging bin, and a screening mechanism is arranged in the sorting box. A rotating plate is rotationally connected to the left side of the screening mechanism, an arc-shaped part is fixedly connected to the corresponding position of the sorting box, an air blowing opening is further fixedly connected to the interior of the sorting box, a rotating roller is rotationally connected to the interior of the sorting box, a plurality of winding pieces are arranged in the rotating roller, and a driving rotating mechanism for driving the winding pieces to rotate is arranged in the