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631.331.81 (9) |
Mașini agricole, echipamente și utilaje agricole (169) |
SM ISO690:2012 NAZAR, Boris. Argumentarea experimentală a principalilor parametri ai brăzdarelor semănătoarelor de precizie. In: Ştiinţa Agricolă, 2016, nr. 2, pp. 78-82. ISSN 1857-0003. |
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Ştiinţa Agricolă | ||||||
Numărul 2 / 2016 / ISSN 1857-0003 /ISSNe 2587-3202 | ||||||
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CZU: 631.331.81 | ||||||
Pag. 78-82 | ||||||
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Rezumat | ||||||
This paper summarizes the results of experimental researches carried out in order to determine the influence of structural and functional parameters of experimental ploughshares where the inclination angle of the leading edge to the horizontal angle is of 710 and 900 on the traction parameter, as well as those of standard ploughshares used in the construction of prototype seeders. Based on the experimental results, regression functions were obtained, which determine the link between the response function (traction parameter) and influencing factors (X1 – work speed (V), in m/s and X2 – working depth (a), in cm). The study of response areas performed by their sectioning using parallel planes with the coordinate system X1OX2 allowed to establish the optimum operating regimes of the ploughshares and that the experimental ploughshare, where the inclination angle of the leading edge to the horizontal angle is of 710, in optimum operating conditions, has the traction resistance by 12-15% lower than standard ploughshares. |
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Cuvinte-cheie Semănătoare, Proces tehnologic, Rezistenţă la tracţiune, Brăzdar, Parametru tehnologic |
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