STUDY OF THE ELECTRIC DRIVE OF THE COMBINED SCREW CONVEYOR-METER-FOOD MIXER

The question of the research of forage grinding depending on the change in the frequency of rotation of the electric drive and the length of the screw conveyor-shredder-mixer is considered. To achieve the set goal, the following tasks were set and solved in the work: to develop a new design of the screw conveyor-shredder-mixer; to develop a simulation model of the power part and control system of the electric drive of the chopper-mixer;; to investigate the screw conveyor-shredder-mixer research stand. During the production of animal husbandry products, up to 50...70% of all costs are accounted for by the preparation of various juicy fodder from root crops. The economic efficiency of using a complex of machines for the preparation of juicy fodder is at a rather low level, which does not correspond at all to the current conditions of farming. These costs are significantly reduced if fodder production is not carried out in specialized factories, but directly in intra-farm small enterprises, while combining several fodder preparation operations into one adjacent operation, for example operations of preparing root crops, grinding and moving the chopped parts, mixing them with other necessary components according to the diet, etc. Based on the proposed scientific hypothesis, it is assumed that such unifying operations of preparing juicy concentrated feed can be performed by one working body - combined screw mechanisms. This achieves the minimization of the energy costs of the root crop processing process by making the necessary adjustments to the operation of the technological equipment or feed preparation line. A research stand for grinding, mixing and transporting fodder has been developed, which allows to detect the nature of the dependence of the degree of grinding on the frequency of rotation of the electric drive and the length of the screw conveyor-shredder-mixer, to model the power part and the control system of the electric drive of the grinder-mixer.

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