Research of parameters of combine header drum in conditions with movement of grain and straw mass
Abstract
Abstract. The models of the technological process of grain and straw mass (GSM) transfer is developed. The dependence of the radius of the drum on the half-angle of the concave, the height of the drum stops and the distance between the drum stop and the concave is established. Also the dependence of the radius of the drum on the half-angle of the coverage of the concave, the angle of inclination of the feeder house and the gap between the side surface of the drum and the side surface of the concave is established. New differential equations of motion of the GSM together with the stops of the drum of the preliminary grain threshing device is constructed and the dependences of the angular displacement and the angular velocity of the material on the residence time of the GSM in the space between the drum stops and the concave are obtained. The dependence of the angular ve-locity of the displacement of the GSM on the structural and kinematics parameters of the preliminary threshing device and the parameters of the feeder house were de-termined.
Key words: combine harvester, header, device for preliminary threshing of grain, grain and straw mass.
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