US 11,895,949 B2
Cleaning device in a combine harvester
Benedikt Poelling, Coesfeld (DE); Norbert Strieker, Verl (DE); Dennis Lutterbeck, Telgte (DE); and Joachim Baumgarten, Beelen (DE)
Assigned to CLAAS Selbstfahrende Erntemaschinen GmbH, Harsewinkel (DE)
Filed by CLAAS Selbstfahrende Erntemaschinen GmbH, Harsewinkel (DE)
Filed on Sep. 22, 2020, as Appl. No. 17/027,893.
Claims priority of application No. 102019125500.7 (DE), filed on Sep. 23, 2019.
Prior Publication US 2021/0084818 A1, Mar. 25, 2021
Int. Cl. A01D 41/127 (2006.01); A01F 12/44 (2006.01)
CPC A01D 41/1276 (2013.01) [A01D 41/1272 (2013.01); A01D 41/1274 (2013.01); A01D 41/1277 (2013.01); A01F 12/448 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for separating a crop flow on at least one conveying and cleaning unit, particularly a top sieve, of a combine harvester, comprising the following steps:
exciting the conveying and cleaning unit to a longitudinal oscillation and a transverse oscillation,
controlling the transverse oscillation depending on at least one state comprising an inclination of the combine harvester, and
controlling the transverse oscillation depending on at least one further state that comprises grain purity,
wherein the transverse oscillation is pre-controlled depending on the inclination of the combine harvester and fine-tuned depending on the grain purity.