بررسی اثر شاخص سینماتیک و ارتفاع چرخ فلک بر تلفات دماغه کمباین

نوع مقاله : مقاله پژوهشی

نویسندگان

گروه آموزشی مهندسی بیوسیستم، دانشکده کشاورزی، دانشگاه تبریز، تبریز، ایران

چکیده

چکیده
عوامل متعددی بر افت کمباین اثرگذار هستند که از مهم­ترین آن­ها می­توان به­ کارکرد دستگاه برش کمباین اشاره کرد که افت جلو و عقب کمباین را تحت تأثیر قرار می­دهد. عملکرد مکانیزم برش متأثر از سرعت پیشروی، سرعت محیطی چرخ فلک، ارتفاع برش، رطوبت محصول، نوع محصول و ... است که در مطالعه حاضر سرعت محیطی و پیشروی در قالب شاخص سینماتیک (نسبت سرعت محیطی چرخ فلک به سرعت پیشروی) و اثر ارتفاع محور چرخ فلک بر افت دماغه کمباین مورد مطالعه قرار گرفت. هر کدام از تیمار­ها در سه سطح در قالب آزمایش فاکتوریل با طرح پایه کاملاً تصادفی مورد آزمون قرار گرفتند. نتایج نشان دادند که اثر ارتفاع و شاخص سینماتیکی در افت کل دماغه در سطح یک درصد، معنی­ دار هستند. بیشترین افت مربوط به ­بیشترین شاخص سینماتیکی 83/3 و در حدود 3/8 درصد بود. در رابطه با افت کل خوشه، اثرات اصلی ارتفاع و شاخص سینماتیکی روی افت خوشه و اثر متقابل آن دو درسطح یک درصد معنی ­دار بودند. در رابطه با افت دانه نیز، نتایج نشان دادند که اثرات اصلی در سطح احتمال یک درصد و اثرات متقابل فقط در سمت چپ دماغه و مجموع افت دانه معنی‌دار بود.
 

کلیدواژه‌ها


عنوان مقاله [English]

Study of the Effect of Kinematic Index and Reel Height on the Combine Header Losses

نویسندگان [English]

  • Arman Jalali
  • Shamsollah Abdollahpour
Department of Biosystems Engineering, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
چکیده [English]

Abstract
There are several factors affecting the combine harvester losses, the most important of which is the operation of the combine cutting bar, which affects the front and rear losses of the  harvester. The performance of a cutting bar is affected by the forward speed, reel speed, cutting height, product moisture, type of product, etc. In this study the effect of kinematic index and reel height was stutied on the combine header losses. The treatments was tested in the form of factorial experiment with a completely randomized design. The results showed that the effect of height and kinematic index on the total loss of the head at the level of 1 percent is significant. The highest loss was related to the highest kinematic index of 3.83 and about 8.3%. Regarding the total loss of the cluster, the main effects of reel height and kinematic index on the losses of the cluster and their interaction were significant at the level of 1 percent. Regard to grain loss, the results showed that the main effects were significant at the level of 1% probability and the interactions were significant only on the left side of the head and the total grain loss.
 
 

کلیدواژه‌ها [English]

  • Keywords: Bunch Losses
  • Combine
  • Forward speed
  • Head drop
  • Reel height
Amiri, A., (1991). Investigation of combine loss. Agricultural machinery. Shiraz university. (In persian)
Anonymous (2015) Investigation of Statistics harvested area and production crops in during 36 years: 1978-2013. 2015. Tehran, Ministry of Agriculture, Department of Planning and Economic, Center of Information and Communication Technology.
Behroozi Lar, M., (2009). Management of Tractors and Agricultural Machinery, University of Tehran Press (In persian)
Behrozi Lar, M., Hassanpour, M., Sadeghnejad, H., Asadi, A., Khosravani, A., and Saati, M. (1996). Final Report of Grain Combine loss. Research (National Plan) Journal No. 37 of Agricultural Engineering Technical Research, Ministry of Agriculture, pages 107 (In persian)
Chaab, R. K., Karparvarfard, S. H., Rahmanian-Koushkaki, H., Mortezaei, A., & Mohammadi, M. (2020). Predicting header wheat loss in a combine harvester, a new approach. Journal of the Saudi Society of Agricultural Sciences, 19(2), 179-184.
Chen, J., Ning, X., Li, Y., Yang, G., Wu, P., & Chen, S. (2017). A fuzzy control strategy for the forward speed of a combine harvester based on KDD. Applied engineering in agriculture, 33(1), 15-22.
Ebrahimi Nik, M., Khaled Hosseini, N., Mahdinia, A., Kazemi, N., and Alemi Saeed, Kh. (2007). The effect of speed and effective wide of cutter bar on rear loss and header loss (John Deer 955) 5th National Congress of Agricultural Machinery and Mechanization Engineering, September 27 and 27, 2007. Mashhad. (In persian)
Fadavi, R., Abdollahpour, S., & Moghaddam, M. (2017). design, construction and evaluation of grain harvester combine’s header loss based on statistical analysis and modeling the optimal factors. Journal of Experimental Biology, 5, 4
Hossain, A., Teixeira da Silva, J.A., (2012). Phenology growth and yield of three wheat (Triticum aestivum L.) varieties as affected by high temperature stress. Not.
Chaab, R. K., Karparvarfard, S. H., Edalat, M., & Rahmanian-Koushkaki, H. (2018). Prediction Model for Wheat Grain Losses in Header of Simulator by Using Dimensional Analysis Approach. Journal of Agricultural Machinery, 8(1), 43-53.
 Khalili, H, Navid, H, Qasemzadeh, H, Dotpepe Sofla, J, Jalali, A. (2018). Investigationof Forward,Cylinder Rotation and Blower RotationSpeed of Tucano 320 HarvesterWheat Grain Total Losses. Agricultural Mechanization, 4 (2), 153-161. Sci. Biol. 4 (3), 97–109.
Khosravani, A. (1999). Investigation of combine harvester loss in Fars province. Agricultural Research Institute. (In persian).
Mehdi Nia, A., Kurdistan, M., pious, A., and, Sajjad, S, (2008), comparing and evaluating the two-combine conventional domestic waste (John Deere 955 and Sahand), the fifth National Congress of Agricultural Engineering and Mechanization, Mashhad,
Mansouri-Rad, H. And Minaei, s. (2003). Investigation of the effect of machine parameters on wheat losses in John Deer combine, the first collection of abstracts. National Conference on Agricultural Waste. October 26, Faculty of Agriculture, Tarbiat Modares University.  (In persian)
Mazaheri, D. (1999). Final report of the future food plan. Publications of the Academy of Sciences of the Islamic Republic of Iran. First Edition. (In persian)
Mohd, A. A., A. R. Omar., E. A. Mutasim and I. D. Mamou. (1997); On farm evaluation of combine harvester losses in the Gezira Scheme in the Sudan. AMA. 28(2): 23-24.
Srivastava, A. Goering C. E. Rohrbach R. P. and Buckmaster D. R. (2006). Engineering Principles of Agricultural Machines. ASABE.
Tavassoli, A., and Minaei, S. (2002). Investigation of rear losses of Jandir combine and the effect of speed on it. Proceedings of the Second National Congress of Agricultural Machinery and Mechanization of Iran. (64-61). (In persian)
Wilkins, D. E., Douglas, Jr. C. L. and Pikul Jr., J. L., (1996). Header loss for she;boume Reynolds stripper-header harvesting wheat Applied Engineering in Agriculture, ASAE 12(2): 159-162.