COMBINE HARVESTER

PROBLEM TO BE SOLVED: To provide a combine harvester capable of accelerating downward leaking even when a threshing treatment amount increases. SOLUTION: A movable receiving net 54 for adjusting the extent of opening of a leaking-down hole 75 for allowing a treated material such as grains to leak down is arranged in a threshing section 4. The movable receiving net 54 is mechanically connected to a detecting means 61 for detecting the amount of waste straw to associate the opening/closing operation of the leaking-down hole 75 with a detection result of the detecting means 61. When a threshing treatment amount is small, the movable receiving net 54 is in a closing posture to increase in area for improved threshing efficiency, but when the threshing treatment amount is large, on the other hand, the movable receiving net 54 takes an opening posture to form the leaking-down hole 75 to allow the treated material such as grains to leak down in a selection section 60 from the leaking-down hole 75, thereby improving the collection efficiency of the grains. COPYRIGHT: (C)2011,JPO&INPIT