FIELD: agriculture.
SUBSTANCE: invention relates to agriculture. The automatic system for monitoring and controlling the fan speed (12) of the combine harvester consists of an amplifier-shaper (5) and piezoelectric sensors (1 and 2) of the quality of the grain fraction behind the lower cleaning sieve and after-threshing device, a control unit (8) with a master device (9 ), which jointly control and control the speed of the fan (12) using the hydraulic cylinder of the variator (11) by means of a hydraulic valve (10) with electromagnetic control and a sensor (13) of the fan speed (12). Additionally, two piezoelectric sensors (3 and 4) of the degree of loading of the feeder house, installed symmetrically on opposite sides of the feeder house, two comparators (6 and 7) and a display (14) are connected. Communication between the elements of the system is carried out by means of electrical wires.
EFFECT: degree of loading of the inclined chamber is controlled when the system acts on the mechanism for adjusting the speed of the fan of the grain heap separator.
1 cl, 1 dwg
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