RESEARCH OF KINEMATICS OF THE CHAIN AND PLUNGER PLANTING DEVICE FOR GARLIC BULBLET
DOI:
https://doi.org/10.31734/agroengineering2019.23.035Keywords:
garlic cloves, planting machine, plant parameters, planting indicesAbstract
The article presents the results of scientific researches of the problems concerning the mechanized planting of garlic and, in particular, the substantiation of the parameters of chain and plunger planting device design. The work describes theoretical study for the conditions of technological process of garlic bulblet planting with forced piece-laying of bulblet in the wedge-shaped groove with the bottom down, and with the sprout up, the interaction of the roller of the fork of the chain-plunger apparatus with a guide, which has the shape of an circle arc of a certain radius.
Under the conditions of the fork with the garlic tooth deepening in the soil, the interaction of the roller, fixed on the plunger rod with the guide in the form of a parabola arc, is considered in the article. It is revealed that in order to prevent jamming and to avoid of excessive wear of the contacting surfaces at the start of interaction of the roller with the guide, the normal to the guide should extend along the fork rod. This condition is obligatory one, regardless of the profile of the guide itself, which may look like an arc of a circle of the appropriate radius or arc of a parabola.
The studies have confirmed that the movement, velocity and acceleration of the fork at the moment of its insertion with the garlic tooth in the soil are the main kinematic indicators of the interaction of the studied elements of the planting machine.
Theoretical dependences were obtained to determine the main kinematic indices of the characterized process, which are solved by the numerical Runge – Kutta method with the following graphical representation of the obtained regularities.
The comparative evaluation of interaction of the roller, fixed on the plunger stem, and the surfaces of the guide profiles of different profiles is made by the author of the work. It is established that irrespective of the surface shapes of the studied guides, the displacement of the fork during interacting of the roller of the stem of the chain-plunger saddle apparatus with them is described by theoretical curves of a polynomial regularity.
The research investigate the change in speed of the fork movement in the vertical direction during the interaction of the roller with the guide in the form of an arc of a circle, which has a direct proportional dependence on the time of their contact. For a parabola guide, the change in fork speed over time is graphically displayed as a curved curve.
It is established that acceleration of the fork at the moment of the roller’s contact with the guides is dramatically increased, regardless of the shape of their surfaces.
References
Artobolevskiy, I. I. (1965). Teoriya mehanizmov. Moskva: Nauka.
Baranov, G. G. (1966). Kurs teorii mehanizmov i mashin. Moskva: Mashinostroenie.
Vasilenko, P. M., & Vasilenko, V. P. (1980). Metodika postroeniya raschetnkih modelei funktsionirovaniia mekhanicheskikh sistem. Kiev: USHA.
Vasylenko, P. M. (1998). Osnovy analitychnykh metodiv zemlerobskoi mekhaniky. Kyiv: NAU.
Kaleniuk, P. I., Bakalets, V. A., Bakalets, I. I., Horbachova, N. V., & Sokhan, P. L. (2000). Vstup do chyslovykh metodiv: Navch. posib. dlia vyshch. zakl. Osvity. Lviv: Derzh. un-t “Lviv. Politekhnika”.
Horiachkin, V. P. (1968). Sobranie sochinenii (T. 1–3). Izd. 2-e. Moskva: Kolos.
Zaika, P. M. (2002). Mashyny dlia sivby ta sadinnia. B Teoriia silskohospodarskykh mashyn (T. 1, ch. 2, s. 452). Kharkiv: Oko.
Kuzenko, D. V., & Semen, O. Ya. (2017). Mashyna dlia sadinnia zubkiv chasnyku. Visnyk Lvivskoho natsionalnoho ahrarnoho universytetu: Ahroinzhenerni doslidzhennia, 21, 115–119.
Pavlovskyi, M. A. (2004). Teoretychna mekhanika: Pidruchnyk. 2-he vyd., stereotyp. Kyiv: Tekhnika.
Samarskii, A. A., & Hulin, A. V. (1989). Chislennyie metodyi. Moskva: Nauka.
Sevostianov, I. V. (2014). Teoriia tekhnichnykh system: Рidruchnyk. Vinnytsia: VNTU.
Semen, O. Ya. (2018). Obhruntuvannia sposobu sadinnia chasnyku mashynoiu z lantsiuhovo-plunzhernym sadylnym aparatom. Perspektyvy i tendentsii rozvytku konstruktsii ta tekhnichnoho servisu silskohospodarskykh mashyn i znariad: Мaterialy IV Vseukr. nauk.-prakt. konf. (Zhytomyr, 28-29 berez. 2018 r.) (c. 27–29). Zhytomyr.
Semen, O. Ya. (2018). Sadzhalka zubkiv chasnyku. Molod ta silskohospodarska tekhnika u XXI storichchi: Мaterialy IV Mizhnarodnoho forumu molodi (Kharkiv, 5-6 kvit. 2018 r.) (c. 17). Kharkiv: KhNTUSH.
Semen, O. Ya., Kuzenko, D. V., & Semen, Ya. V. (2018). Teoretychni doslidzhennia parametriv systemy “baraban – zubok chasnyku – vylka” sadzhalky chasnyku. Visnyk Lvivskoho natsionalnoho ahrarnoho universytetu: Ahroinzhenerni doslidzhennia, 22, 77–85.
Semen, Ya. V., & Nishchenko, I. O. (2005). Analitychna model pidsystemy “hidrodvyhun – vibrozburiuvach kolyvan”. Visnyk Lvivskoho natsionalnoho ahrarnoho universytetu: Ahroinzhenerni doslidzhennia, 9, 222–227.
Semen, Ya. V., Shevchuk, R. S., Ripka, I. I., & Nishchenko, I. O. (2008). Teoretychnyi analiz vzaiemodii elementiv systemy “enerhetychnyi zasib – strushuvach – derevo”. Visnyk Lvivskoho natsionalnoho ahrarnoho universytetu: Ahroinzhenerni doslidzhennia, 12(1), 291–297.
Shevchuk, R. S., Myroniuk, O. S. (2000). Model protsesu rozghonu systemy “dvyhun – strushuvach – derevo”. Silskohospodarski mashyny, 6, 201–208.
Kuzenko, D. V, Krupych, O. М., & Semen, Ya. V. (2017). Features of mathematical modeling of mechanized operations for corn harvesting. MOTROL Commission of Motorization and Energetics in Agriculture, 19(2), 41–45.
Malkov, V., Vlasova, A., Nosko, P., & Stavitskyi, V. (2011). Method of the dynamic analysis of mechanism. TEKA Commission of Motorization and Energetics in Agriculture, XI A, 145–150.
Semen, O., Kuzenko, D., & Semen, Ya. (2017). A machine for oriented planting of garlic teeth. ТЕКА Commission of Motorization and Energetics in Agriculture, 17(2), 55–60.
