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بررسی نیروهای سه محوره وارد بر زیرشکن کج ساق تک شاخه و دو شاخه در سرعت های پیشروی متفاوت | ||
| تحقیقات سامانه‌ها و مکانیزاسیون کشاورزی | ||
| مقاله 2، دوره 22، شماره 77، خرداد 1400، صفحه 1-18 اصل مقاله (1.24 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/erams.2018.110422.1188 | ||
| نویسندگان | ||
| محمد عسکری* 1؛ غلامحسین شاهقلی2؛ یوسف عباسپور گیلانده3 | ||
| 1استادیار گروه مهندسی مکانیک بیوسیستم، دانشکده مهندسی زراعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری، مازندران، ایران | ||
| 2استاد گروه مهندسی بیوسیستم دانشکده کشاورزی و منابع طبیعی دانشگاه محقق اردبیلی | ||
| 3استاد گروه مهندسی بیوسیستم دانشکده کشاورزی و منابع طبیعی دانشگاه محقق اردبیلی | ||
| چکیده | ||
| در این تحقیق، نیروهای مقاوم افقی، عمودی و جانبی وارد بر زیرشکن کجساق در حالتهای تک شاخه و دو شاخه در چهار سرعت پیشروی 8/1، 3/2، 9/2 و 5/3 کیلومتر بر ساعت و در عمق ثابت40 سانتیمتر بررسی شد. آزمایشهای مزرعهای بر پایۀ طرح بلوکهای کاملاً تصادفی با چهار تکرار اجرا گردید. نیروهای افقی، عمودی و جانبی در هر آزمایش اندازهگیری و ثبت شدند. نتایج بررسیها نشان میدهد که با افزایش سرعت پیشروی از 8/1 به 5/3 کیلومتر برساعت، نیروهای مقاوم افقی، عمودی و جانبی به ترتیب در حالت تک شاخه به میزان 14، 5/3 و 1 درصد و در حالت دو شاخه به میزان 13، 2/1 و 5/11 درصد افزایش مییابند. همچنین، با مقایسۀ این نیروها مشخص شد که نیروی مقاوم افقی حالت دو شاخه بیش از دو برابر حالت تک شاخه، نیروی مقاوم عمودی بیشتر از حالت تک شاخه اما نه دو برابر آن و نیروی مقاوم جانبی حالت دو شاخه بسیار کمتر از نیروی مقاوم جانبی حالت تک شاخه است. در حالت کلی، توصیه میشود که با استفاده از دو شاخۀ توأم کجساق به جای انواع تک شاخۀ آن، میزان نفوذ شاخهها را در خاک افزایش و نیروی جانبی را کاهش دهیم و تعادل جانبی مجموعه تراکتور- زیرشکن را بهبود بخشیم. | ||
| کلیدواژه‌ها | ||
| تیغه باریک خاک‌ورز؛ دینامومتر؛ نیروی جانبی؛ نیروی مقاوم افقی | ||
| عنوان مقاله [English] | ||
| Field Assessment of Triaxial Forces on Single and Double Bentleg Plows at Various Forward Speeds | ||
| نویسندگان [English] | ||
| Mohammad Askari1؛ Gholamhosein Shahgholi2؛ Yousef Abbaspour-Gilandeh3 | ||
| 1Assistant Professor of Mechanical Engineering of Biosystem, Faculty of Agricultural engineering, Sari Agricultural Sciences and Natural Resources University, Sari. Iran | ||
| 2Associate professor of biosystems engineering, Faculty of agriculture and natural resources, University of mohaghegh ardabili | ||
| 3Professor of biosystems engineering, Faculty of agriculture and natural resources, University of mohaghegh ardabili | ||
| چکیده [English] | ||
| In this research, horizontal, vertical and side forces on a single bentleg plow (SBLP) and a double bentleg plow (DBLP) at four forward speeds of 1.8, 2.3, 2.9 and 3.5 kmh-1 and at the constant depth of 40 cm was evaluated. The experiment was arranged in the randomized complete block design with four replications. In each experiment, three perpendicular soil forces were measured and recorded. Results showed that increasing forward speed from 1.8 to 3.5 kmh-1 resulted in increasing horizontal, vertical and side forces by 14, 3.5 and 1% for SBLP and 13, 1.2 and 11.5% for DBLP, respectively. Other results indicated that horizontal force for DBLP was more than twice of that for SBLP. The vertical force was lower for SBLP but it was not more than half that of DBLP and the side force for DBLP was very less than that for SBLP. Generally, using the DBLP increases tine penetration and decreases side force which leads to balanced operation of the subsoiler and tractor and therefore recommended. | ||
| کلیدواژه‌ها [English] | ||
| Dynamometer, Horizontal Force, Narrow Tillage Tine, Side Force | ||
| مراجع | ||
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