Факультет транспорту та інженерії
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Item type:Наукова стаття, Pulling device for harvesting of Oleaginous Flax(2024) Didukh, Volodymyr; Yaheliuk, Svitlana; Bodak, Volodymyr; Bodak, Maksym; Yaheliuk, OleksandrOleaginous Flax is harvested using direct combining to obtain seeds. During this process – Stem-Fiber Mass (SFM) is disposed of by incineration or shredding. Both cases are harmful to the environment. With a sufficient amount of moisture and heat, a short non-oriented fiber is formed in a stem. The fiber creates a problem in the operation of the cutting device of the harvester. Especially, when harvesting Oleaginous Flax in the phase of full ripeness, when the fiber has strengthened and the woody part has turned into a shives. Thus, it is possible to save the grown crop by pulling the stems. Well-known technical means of pulling flax stems have a small width of grip, which affects their productivity. The solution to the problem lies in the creation of the harvesting working bodies, taking into account the width of the harvester. Such a device, when installed on the harvesting part of the combine, should not disturb its structure. As a section of the working body, a pair of rollers of the appropriate geometric shape, rotating towards each other, is offered. The technological process of stem pulling involves cap- turing a certain number of stems with rotating surfaces and clamping them in the space between the surfaces. Superimposition of surface rotation speeds and forward speed of the grain harvester helps pull the stems out of the soil. This approach makes it possible to preserve the grown crop of Oleaginous Flax and create prerequisites for the use of the SFM.Item type:Наукова стаття, Optimization of pickup parameters for flax retted straw formation(2026) Didukh, Volodymyr; Bodak, Maksym; Khlopetskyi, Roman; Tsiz, Igor; Tarasiuk, VictorClimatic characteristics, particularly temperature and ambient humidity, significantly affect the qualitative and quantitative indicators of flax production and fibre formation. Conventional technologies for obtaining flax fibre are based on natural dew retting, the efficiency of which depends on atmospheric moisture. The decrease in air humidity during summer periods due to climate change complicates the biological processes involved in the transformation of flax stems into retted straw. A separate harvesting technology involving low cutting of stems and their placement into windrows has been proposed to utilize productive soil moisture during retting and to accelerate seed harvesting. During field laying, windrows change their geometric parameters, become denser, and increase adhesion both between stems and with the soil surface, which requires periodic lifting and loosening. This paper presents the results of field experimental studies conducted using a developed experimental picker to determine rational structural and technological parameters based on a four-factor experimental design. Changes in windrow geometry and their interaction with the working elements of the picker were analysed. Optimal parameters of the picker for flax retting preparation were established. The study is aimed at developing a new technical solution for flax harvesting.