TO THE DETERMINATION OF THE CRITICAL CIRCUIT SPEED OF THE SHARING DRUM

The article is devoted to the theoretical definition of the critical circumferential speed of the stripping drum of a kena harvester, which depends on the drum diameter, diameter and weight of the stems. It was determined from the equality of the change in the momentum of the stem during impact, i.e. from a shock impulse acting on the stem. The shock impulse is determined when the drum blade touches the stem in the process of stripping, which acts on the mass of the entire stem. The duration of the impact of the drum stripping on the stem was determined from the high-speed filming of the process, which is equal to the time interval between the moments of contact of the blade with the stem. It was found that with an increase in the circumferential speed of the drum, the duration of the impact decreases. With a stem diameter of 10 mm and a mass of kenaf stems, the theoretical peripheral speed is.

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