Abstract
The paper presents the test results of the universal woody green separator “Sibirika 21”, which uses a replaceable knife and brush type drum as a working element. The separator was tested at an active clearcutting area of mature and overmature stands at the following coordinates: By. region, Krapivinsky district, Krapivinsky forestry, Ivanovskoye tract, block No. 16, section No. 17. During testing, it was found that for deciduous trees it is preferable to use a brush drum. In this case, for example, for birch, it was possible to obtain woody greens with 100% purity. As a brush material, it is preferable to use twisted nylon fibers with a square cross-section and a side of 3 mm. When harvesting coniferous foot, the best productivity (up to 600 kg person/hour) and cleanliness (82%) is ensured when using a knife drum.
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