Fallen grain collecting device of corn harvester

The utility model relates to the technical field of corn harvesting, in particular to a falling grain collecting device of a corn harvester, which can conveniently collect falling corn grains in the corn harvesting process, reduce waste and improve practicability. Comprising a receiving channel, a separation net, a baffle, a receiving groove, a filtering net, two sets of connecting frames, two sets of air cylinders, two sets of telescopic rods, multiple sets of pulleys and multiple sets of supporting frames, the top end of the baffle is connected with the right end of the separation net, a guide plate is arranged at the right end of the baffle, the right end of the receiving channel communicates with a discharging pipe, and the tops of the multiple sets of supporting frames are all connected with the receiving channel; the two ends of the two sets of connecting frames are connected with the receiving channel and the two sets of air cylinders respectively, the two sets of telescopic rods are installed at the o