Patent ID: 8231447
Filing Date: 2012-07-31
Classification: A01F

Abstract:
1. A threshing unit for combine harvesters, comprising a cylinder; an assigned concave; at least one drum situated downstream of the cylinder, redirecting a threshed crop material out of a threshing region, and conveying it further in a direction of a grain separating device; a mechanical form-locked drive connection disposed between the cylinder and the at least one drum; wherein threshing slats of the cylinder and slats of the at least one downstream drum are situated at a distance from one another in a circumferential region of the cylinder, and wherein peripheral speeds of the cylinder and the at least one drum are synchronized with one another by the mechanical form-locked drive connection such that in a turning and scraping region said slats of the cylinder and the at least one drum are always positioned in a position selected from the group consisting of a position opposite each other, a leading position that slightly deviates from the position opposite each other, and a trailing position which slightly deviates from the position opposite each other.