Browsing by Author "V. Shevchuk"

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    Development of operational requirements for self-propelled combine harvesters with the capabilities of mobile energy resources
    (Eastern-European Journal of Enterprise Technologies. 2020. Vol. 6. No 6 (107), 2020) V. Sheichenko; A. Kuzmych; V. Niedoviesov; M. Aneliak; O. Bіlovod; V. Shevchuk; T. Kutkovetska; N. Shpilka
    This paper reports a study into the possibility of using the chassis of com-bine-harvesters as a mobile energy device. The operational requirements for mobile energy technological devices for general purposes have been developed.The traction-coupling characteristics of the combine-harvester with an adap-ter that increases traction force have been investigated.
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    Development of operational requirements for self-propelled combine harvesters with the capabilities of mobile energy resources
    (Eastern-EuropeanJournalofEnterprise Technologies. 2020. Vol. 6. No6 (107), 2020) V. Sheichenko; A. Kuzmych; V. Niedoviesov; M. Aneliak; O. Bіlovod; V. Shevchuk; T. Kutkovetska; N. Shpilka
    This paper reports a study into the possibility of using the chassis of com-bine-harvesters as a mobile energy device. The operational requirements for mobile energy technological devices for general purposes have been developed. The traction-coupling characteristics of the combine-harvester with an adap-ter that increases traction force have been investigated. The theoretical dependences have been derived of the motion speed, the power on a hook, the specific fuel consumption, as well as a factor of loading the wheels of the driven axle, on the traction force on the hook of an energy-technological device. It is noted that the use of the controlled axle with drive wheels reduces the slippage of the engines of the energy technological device. At the engine slippage level of up to 16 % an energy device, equipped with a driven axle with drive wheels, generates a traction force on the hook of up to 40 kN. Under the conditions of driving the axle by the hydraulic transmission mainline, the motion speed of an energy device decrea-ses by 17.9 %, 28.5 %, 35.9 %, and 49.0 %, respectively, on gears I, II, III, and IV of the drive axle gearbox. The power on the energy device’s hook is increased due to the corresponding increase in traction effort: on gear III, at a trac-tion effort within 35–40 kN, the capacity on the hook is 68–75 kW. Under these condi-tions, the specific fuel consumption is 430– 460 g/kWh at the device’s motion speed within 1.9–1.95 m/s. The limits for changing the load factor on the wheels of the driven axle (not less than 0.2) have been determined, at which the requirements for control over an energy device are met. The specific fuel consumption (540– 580 g/kWh) by a combine-harvester with a throughput capacity of 9–11 kg/s has been established, when using it as an energy technological device for general purposes at a motion speed of 1.7–2.1 m/s and a traction effort on the hook of 24–33 kN Keywords: combine-harvester, energy technological device, operational require-ments, traction-coupling properties, adapter
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    Devising technologies for harvesting hemp with belt threshers
    (Eastern-European Journal of Enterprise Technologies. 2022. Vol. 1. No 1 (115), 2022) V. Sheichenko; V. Shevchuk; I. Dudnikov; S. Koropchenko; V. Dnes; Y. Skoriak; V. Skibchyk
    This paper reports the system of devised technologies for harvesting hemp with belt hemp threshers. It is proposed to form a roll of mowed hemp stems on a belt and tramp it to the field edge for further processing of stems. That makes it possible to significantly improve the efficiency of mechanized processes when harvesting and processing the entire biological harvest of hemp. Thus, the level of handling hemp production systems has been increased. At the same time, the management of the process of roll formation of hemp stems has been improved. The technology of hemp harvesting has been improved with the possibility of obtaining raw materials for long fiber and therapeutic prepa-rations. Two-phase harvesting (for seeds and fiber) has been proposed to be implemented by using belt hemp threshers included in the sta-tionary (semi-stationary) complexes. The possibility of preparing the combed hemp retted stalks by spreading them on mate-rials of various types has been systematically substantiated. The influence of the thickness of a layer of hemp stalks spread out for the preparation of ret-ted stalks on the timing of their preparation and fiber quality indicators has been investigated. It was established that in terms of the qual-ity indicators of the produced fiber, the retted stalks from all experiments are properly aged while the efficiency of their processing for me-dium- and large-stalk fraction is high. The fibers produced in all experiments were characterized by purity, as well as high indica-tors of breaking load and handful length. As regards the linear density, the fibers’ va lues in all experimental variants exceeded the normative ones by 1.65–2.64 times, which ren-dered them non-standard. An increase in the values of quality indica-tors has been established with the correspond-ing change, from 1 to 3 kilograms per meter, in the thickness of the layer of combed hemp stalks. The breaking load, under such condi-tions, increased by 16.6 %; the linear densi-ty, by 20 %; the content of shives, by 60 %; the paw content, by 12.5 %, the content of bast strands, by 10.8 % Keywords: industrial hemp, belt harvest-ing technology, shale retted stalks, retted stalk quality
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    Study of the process of grainpre-threshing by working bodies of a combine harve sterheader
    (Eastern-European Journal of Enterprise Technologies Vol. 6. No 1(90). P. 19–27, 2017) V. Sheychenko; I. Dudnikov; A. Kuzmych; M. Shevchuk; V. Shevchuk; A. Pushka; V. Hruban; M.Tolstushko; N.Tolstushko
    Досліджено технологічний процес обмолоту зернових куль­ тур пристроєм попереднього обмолоту зерна жниварки зер­ нозбирального комбайна. Роз­ роблено експериментально­роз­ рахунковий метод оцінювання рівня відділення зерна пристроєм. Отримано теоретичну залеж­ ність коефіцієнта відділення зерна, яка встановлює систем­ ний взаємозв’язок між пара­ метрами та режимами функ­ ціонування пристрою жниварки та зернозбирального комбайна. Експериментально встановлено залежності коефіцієнта відді­ лення зерна від швидкості руху комбайна