ارزیابی تیغه‌ی باریک خاک‌ورز به منظور بهبود عملکرد خاک‌ورز مرکب

نوع مقاله: مقاله پژوهشی

نویسندگان

1 گروه مهندسی مکانیک بیوسیستم، دانشکده کشاورزی، دانشگاه شیراز. ایران.

2 گروه مهندسی مکانیک بیوسیستم، دانشکده کشاورزی، دانشگاه شیراز. شیراز، ایران.

3 گروه مهندسی مکانیک بیوسیستم، دانشکده کشاورزی، دانشگاه شیراز، شیراز، ایران.

چکیده

در این پژوهش از طرح جدید یک تیغه­ی باریک خاک­ورز با زاویه تمایل جانبی 10 درجه به منظور امکان­سنجی حذف باله از آن و مقایسه با تیغه شاهد استفاده شد. عوامل آزمایشی شامل تیغه (تیغه با زاویه تمایل جانبی 10 درجه، تیغه با زاویه تمایل جانبی 10 درجه با باله و تیغه شاهد)، عمق شخم در سه سطح 20،15 و 25 سانتی­متر و سرعت پیشروی در دو سطح 3 و 6 کیلومتر بر ساعتبودند. نیروی مقاومت کششی، مقاومت ویژه، سطح بهم خوردگی خاک و مصرف سوختبه عنوان صفات اندازه­گیری شده در نظر گرفته شدند. نتایج نشان داد، نیروی مقاومت کششی تیغه­های زاویهدار با و بدون باله نسبت به تیغه شاهد به طور معنی­دار افزایش یافت. سطح بهم خوردگی خاک در تیغه با زاویه تمایل جانبی 10 درجه با و بدون باله نسبت به تیغه شاهد کاهش یافت. اثر نوع تیغه بر مقاومت ویژه معنی­دار بود. مقاومت ویژه در تیغه 10 درجه با باله و عمق 25 سانتی­متری بیش­ترین مقدار و در تیغه شاهد و عمق 15 سانتی­متری دارای کم­ترین مقدار بود. اثر نوع تیغه، عمق شخم و سرعت پیشروی و همچنین برهم کنش این سه عامل بر مصرف سوخت در سطح احتمال یک درصد معنی­دار شدند. مقدار مصرف سوخت در تیغه شاهد و 10 درجه با هم تفاوت معنی­داری نداشت. بر اساس نتایج رگرسیونی حاصله عمق بهینه برای تیغه باریک خاک‌ورز با زاویه تمایل جانبی 10 درجه، 02/17 سانتی­متر و سرعت پیشروی بهینه 6/3 کیلومتر بر ساعت پیشنهاد گردید. 
In this study, a new design of a narrow blade tillage with lateral tilt angle 10 degrees was used to study the possibility of removing its wingand compare it with the control blade. Three blades (blade with lateral tilt angles of 10 degrees, blade tilt angle of 10 degrees equipped with wing and blade control), plow depth in three levels, 20,15 and 25 cm and two levels of forward speeds 3 and 6 km/hr were the experimental factors. Measured characteristics were draft force, specific draft, soil surface disturbance and fuel consumption. The results showed that the draft force of the blade equipped with angle, with wing and without wing was significantly increased compared to the control blade. Soil surface disturbance in the blade with lateral tilt angle 10 degrees with and without wing decreased compared to the control blade. The effect of the bladetype on specific draft was significant. Specific draft in the blade 10 degrees with wing and in depth of 25 cm and the control blade in depth of 15 cm had the highest and lowest value respectively. The effect of the blade type, plow depth and forward speed and also the interaction of these three factors on fuel consumption in probability level %1 were significant. There was no significantly different between amount of fuel consumption in the control blade and the blade equipped with lateral tilt angle. Based on the results of regression analysis, optimum depth and forward speed for narrow blade equipped with lateral tilt angle 10 degrees were proposed 17/02 cm and 3/6km / h, respectively.
 

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Evaluation of a Narrow Blade to Improving the Combined Tillage performence

نویسندگان [English]

  • zeynab azimi zadeh 1
  • Seyed Hossein Karparvarfard 2
  • hadi azimi nejadian 3
1 Biosystems Engineering Department, Faculty of Agriculture, Shiraz University, Shiraz, Iran.
2 Biosystems Engineering Department, Faculty of Agriculture, Shiraz University, Shiraz, Iran.
3 Biosystems Engineering Department, Faculty of Agriculture, Shiraz University, Shiraz, Iran.
چکیده [English]

In this study, a new design of a narrow blade tillage with lateral tilt angle 10 degrees was used to study the possibility of removing its wing and compare it with the control blade. Three blades (blade with lateral tilt angles of 10 degrees, blade tilt angle of 10 degrees equipped with wing and blade control), plow depth in three levels, 20,15 and 25 cm and two levels of forward speeds 3 and 6 km/hr were the experimental factors. Measured characteristics were draft force, specific draft, soil surface disturbance and fuel consumption. The results showed that the draft force of the blade equipped with angle, with wing and without wing was significantly increased compared to the control blade. Soil surface disturbance in the blade with lateral tilt angle 10 degrees with and without wing decreased compared to the control blade. The effect of the blade type on specific draft was significant. Specific draft in the blade 10 degrees with wing and in depth of 25 cm and the control blade in depth of 15 cm had the highest and lowest value respectively. The effect of the blade type, plow depth and forward speed and also the interaction of these three factors on fuel consumption in probability level %1 were significant. There was no significantly different between amount of fuel consumption in the control blade and the blade equipped with lateral tilt angle. Based on the results of regression analysis, optimum depth and forward speed for narrow blade equipped with lateral tilt angle 10 degrees were proposed 17/02 cm and 3/6km / h, respectively.

کلیدواژه‌ها [English]

  • Tillage blade
  • Plow depth
  • Plow speed
  • draft
  • Fuel consumption
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