THRESHING CYLINDER FOR THRESHING DEVICE

[Object] The present invention is aimed at reducing the threshing load in the threshing chamber, while enhancing the performance of the threshing device. [Solution] A threshing cylinder for a threshing device comprises: a threshing cylinder shaft (26); a plurality of support members (25) for holding the threshing teeth (20), the support members (25) being disposed at intervals from each other in the circle circumferential direction about the threshing cylinder shaft (26); a cylinder member (27), provided in a space surrounded by the plurality of support members (25), for surrounding the threshing cylinder shaft (26); and a plate-like member (45) provided between the circumference surface of the cylinder member (27) and the support members (25). Moreover, the cross-section of the cylinder member (27) in a direction that intersects with the threshing cylinder shaft (26) has a circular or polygonal shape. Also, the cross-section of the cylinder member (27) in a direction that intersects with the threshing cylinder shaft (26) has a polygonal shape, and each apex (30) of the cylinder member (27) is disposed between the two neighboring plate-like members (45)