THEORETICAL STUDIES OF DISTRIBUTION OF A HEAP BOW IN THE HORIZONTAL PLANE BY ADDITIONAL VIBRATIONS OF THE BAR ELEVATOR WITH AN ADJUSTABLE ANGLE OF THE TILT TILT
Harvesting the underground part of onion sets is associated with great difficulties, since it is necessary to separate commercial products from a large amount of soil, exceeding the volume of bulbs in a weight ratio. The complexity of designing and creating separating working bodies of machines for harvesting root crops and onions lies in a wide variety of soil and climatic conditions in which the technological process of harvesting takes place. In addition, under uniform soil and climatic conditions, within one accounting plot, a large deviation from the average values of the basic physical constants of the soil - moisture and hardness - is observed. The big obstacle to the successful operation of the separating working bodies is the presence of soil lumps in the separated mass. The solution to the problem of improving the quality indicators of onion harvesting machines is determined by the development of the functioning elements of the harvesting machine with a certain level of intelligence and responsiveness to variable stochastic indicators of external factors. The main technological parameters of the investigated separating working body are substantiated. Formulas are obtained that allow one to determine the elevation angle of the bar elevator blade in the transverse direction, the displacement distance of the electric cylinder rod, the transverse component of the heap displacement due to the run-in of the bar elevator blade on the shaker, the vibration amplitudes in the transverse and longitudinal directions of the bar elevator blade, depending on its width and length, as well as the algorithm of the bar elevator with an adjustable blade angle. The cross-sectional area of the onion set heap on the bar elevator is determined taking into account the separation completeness coefficient, the length of the section of the bar elevator where the onion set heap is displaced as a result of the change in the elevation angle due to the dependence of the speed of the onion set heap over the surface of the bar elevator taking into account the coefficient of friction of the bulbs.