توسعه ماشین حساب مقاومت و توان کششی گاوآهن قلمی بر مبنای برخی از قوانین مکانیکی

احمدی, ایمان

doi:10.22059/ijbse.2017.60256

توسعه ماشین حساب مقاومت و توان کششی گاوآهن قلمی بر مبنای برخی از قوانین مکانیکی

نوع مقاله : مقاله پژوهشی

نویسنده

ایمان احمدی

دانشگاه ازاد اسلامی- واحد اصفهان (خوراسگان)

10.22059/ijbse.2017.60256

چکیده

گاوآهن قلمی از جمله ادوات خاک‌ورزی است که برای اجرای کشاورزی حفاظتی می‌تواند به‌کار رود، بنابراین مطلوب است که این گاوآهن از نقطه‌نظر نیازهای نیرویی مورد توجه قرار گیرد. برای رسیدن به این هدف، ابتدا یک مدل تئوری برای محاسبه مقاومت، مقاومت ویژه و توان کششی گاوآهن قلمی ارائه شد و سپس نتایج به دست‌آمده از مدل با گزارش‌های سایر پژوهشگران و نتیجه آزمون مزرعه‌‌ای، به‌منظور تأیید مدل، مقایسه گردید. برمبنای نتایج به‌دست آمده، مقاومت کششی گاوآهن قلمی دوازده شاخه‌ای، با عمق کاری 30 cm در خاک دارای بافت شنی، لومی و رسی به‌ترتیب برابر با 27، 43 و 55 kN و مقاومت کششی ویژه آن به‌ترتیب برابر با 3.3 ،5.1 و 6.5 N/cm² به‌دست آمد که در گستره نتایج به‌دست آمده توسط سایر محققین و استاندارد ASABE (2011) بود. بنابراین روش توسعه‌یافته در این مقاله می‌تواند با دقت قابل قبولی نیازهای کششی گاوآهن قلمی را برآورد کند.

کلیدواژه‌ها

20.1001.1.20084803.1395.47.4.4.1

موضوعات

خاک ورزی و رابطه ماشین و خاک

عنوان مقاله [English]

Development of a chisel plow draft force and power calculator based on some mechanical laws

چکیده [English]

The chisel plow is one of the tillage implements utilized to carry out conservation tillage practices; therefore, it is valuable to pay more attention on the force requirement of this implement. To achieve this goal, a theoretical model was developed to calculate draft, specific draft, and drawbar power of a chisel plow. Then, results obtained from the developed model were compared with the reports of other studies and the result of the field experiment in order to validate the developed model. According to the results, the required draft force of a twelve-shank chisel plow working at 30 cm depth in sandy, loamy, and clay soils were 27, 43 and 55 kN respectively and the required specific draft of this machine were 3.3, 5.1 and 6.5 N/cm2 respectively. These results were in accordance with the results of other studies, as well as the results of the ASABE standard (2011), therefore; the developed model is able to estimate draft force of the chisel plow acceptably.

کلیدواژه‌ها [English]

mechanical laws
soil cutting
specific draft force
theoretical models

مراجع

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