Abstract
Harvesting of technical hemp is the most important technological process during its cultivation. For harvesting hemp, various designs of cutting machines are used, adapted to perform operations taking into account the characteristic features of the stems, their structure and physical and mechanical properties. The cutting machines used on Soviet-made hemp harvesting equipment have their own characteristic disadvantages. To eliminate these disadvantages, it is necessary to further improve the design of cutting machines, reduce energy consumption on the cutting process, and find new technical solutions that increase productivity and increase the longevity of working bodies. The article examines the kinematics of the rotary cutting device in relation to the cutting of technical hemp stems. The path of the cutting segments is determined, and analytical dependences are obtained. The main parameters of the rotary cutting unit are determined by calculation: rotor radius - 0,57 m, the height of the cutting segments - 0,01…0,015 m, step - 0,04 m, number of segments on the disk – 90 units, angle of adjacent segments - 4 degrees. The graphical dependence of rotor diameter of the cutting machine on the unit width for different numbers of rotors is obtained (from 2 to 8 units). According to the calculated parameters, the layout of the cutting machine with a total working width is presented 4,5 m.
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