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2013, vol. 39, br. 1, str. 21-32
Merenje vučnih otpora na plugu sa standardnom i rešetkastom plužnom daskom na zemljištu tipa ritska crnica
aUniverzitet u Novom Sadu, Poljoprivredni fakultet, Srbija
bSchneider Electric DmS NS D.O.O., Novi Sad

e-adresamarkok@polj.uns.ac.rs
Projekat:
Unapređenje kvaliteta traktora i mobilnih sistema u cilju povećanja konkurentnosti, očuvanja zemljišta i životne sredine (MPNTR - 31046)

Ključne reči: raoni plug; standardna i rešetkasta plužna daska; vuča; merenje; nošeni ram
Sažetak
U radu su predstavljeni rezultati ispitivanja vučnog otpora dva četvorobrazna raona pluga sa punom i rešetkastom plužnom daskom na neobrađenom i podrivanom zemljištu. Oba pluga su istog geometrijskog oblika plužnih tela. Testiranje plugova obavljeno pri jednakim radnim parametrima (dubina, radni zahvat, brzina) kako bi se precizno odredio uticaj tipa plužne dakse na ukupan otpor zemljišta. Za potrebe testa korišćen je novi uređaj za merenje otpora vuče na nošenim i polunošenim priključnim mašinama II i III kategorije. Uređaj predstavlja kruti ram sa tri senzori sule za merenje horizontalnog opterećenja na polugama traktora. Poljsko merenje otpora vuče obavljeno je pri frekvenciji merenja od 10 Hz. Tokom testa produkovano je oko 52000 podataka i obrađena je površina od oko 1,17 ha. Najniža prosečna vrednost otpora vuče od 19,73 kN ostvarena je u 10. prohodu na podrivanom zemljištu sa plugom sa rešetkastom plužnom daskom, dok je najviša dostignuta u 3. prohodu i iznosi 28,1 kN. Među prosečnim vrednostima otpora i brzine u svim prohodima primetna je značajna bliskost. Rezultati analize varijanse ukazuju na to da postoji statistički značajna razlika u srednjim vrednostima otpora vuče između dva ispitivana pluga na oba tretmana za nivo poverenja od 95%. Poređenjem srednjih vrednosti otpora vuče za rešetkastu i punu plužnu dasku na oba tretmana dobija niža vrednost od 6% za rešetkastu plužnu dasku na neobrađenom zemljištu dok je ta razlika na podrivanom zemljištu u proseku oko 7%.
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jezik rada: srpski
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objavljen u SCIndeksu: 10.12.2013.

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