Abstract
By implementing a factor experiment in the laboratory the regularity of the change in the degree of threshing of ears in the space between the riffles of the flail’s threshing drum was stated. A mathematical model of the threshing process in the space between the riffles is given. The obtained results broaden the understanding of the nature of threshing by grinding in the threshing space of a combine harvester. The tests used unmilled ears of Donskaya ostistaya wheat, freed from grains by 70-80%. It is determined that the complete threshing is carried out for one impact of the flail and with minimal compression of the plant mass. Conclusions are made about the results obtained.
Highlights
By implementing a factor experiment in the laboratory the regularity of the change in the degree of threshing of ears in the space between the riffles of the flail's threshing drum was stated
To solve the problems of intensification of the process of interriffle threshing of bread mass and to optimize the parameters of the riffled surface of the flails we carried out a factorial experiment with responses rationale, selection of the independent variables and the establishment of their variation range
According to the conditions of the experiment, the stem with ear 4 was placed in the interriffle channel
Summary
By implementing a factor experiment in the laboratory the regularity of the change in the degree of threshing of ears in the space between the riffles of the flail's threshing drum was stated. To solve the problems of intensification of the process of interriffle threshing of bread mass and to optimize the parameters of the riffled surface of the flails we carried out a factorial experiment with responses rationale, selection of the independent variables and the establishment of their variation range. The main object was chosen underthreshed (25%) ear, and the response is the degree of threshing of the ear after dragging between the riffles.
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