GRAIN DISCHARGE STRUCTURE OF COMBINE HARVESTER

PROBLEM TO BE SOLVED: To prevent occurrence of trouble due to changeover of a shutter to a closed state in a state in which grains stay in a grain discharge port.SOLUTION: A grain discharge device is configured to allow the changeover between a grain discharge state for discharging grains stored in a grain tank to the outside of the machine and a discharge stopped state in which the discharge of the grains is stopped. A grain discharge structure of a combine harvester is provided with the shutter 28 for opening and closing the grain discharge port 26 of a grain discharge device. Furthermore, the grain discharge structure is provided with a control means 40 for controlling the opening and closing of the shutter 28; and an artificially operating type command means A for commanding the shutter 28 to change over to the closed state. The control means 40 is configured to change over the shutter 28 to the closed state when the control means 40 receives the command from the command means A after the control means 40 detects the changeover of the grain discharge device to the discharge stopped state.