Browsing by Subject "Preparation floor"

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Förderung und Entmischung auf dem Vorbereitungsboden des Mähdreschers
(2013) Timofeev, Andrey; Böttinger, Stefan
In the last years with the increasing performance of the combine harvester capacity, the performance of the cleaning system has been the limiting factor, because the capacity of the threshing drum and the separation elements by the use of additional separation drums and rotors is not a problem anymore. The performance of the cleaning system can be greatly increased, especially through intense pre- segregation, whereas grain losses remain at a relatively low level even at high particle rates of approximately of m˙ K = 5,5 kg/(s·m). Grain- and NKB (chaff and other plant residue) -throughput affect both the conveying speed and the segregation on the grain pan. The grain throughput has a particularly strong impact on the conveyor speed, when throw occurs in the conveying process (Frv > 1). Thereby the elastic properties of the crop layer (straw and chaff rack) damps very strong the introduced mechanical agitation. This decreases the conveying speed strongly. The segregation in turn affects positively the speed of transfer from the grain pan to the material. The separation takes place substantially in the last third of the grain pan.