A COMPARATIVE STUDY BETWEEN WHEEL AND CRAWLER TYPE COMBINE HARVESTERS FOR LOCAL MANUFACTURING | ||||
| Egyptian Journal of Agricultural Research | ||||
| Article 34, Volume 83, Issue 2, July 2005, Page 1043-1062 PDF (4.06 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejar.2005.246515 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| OSAMA M. KAMEL | ||||
| Agricultural Engineering Research Institute, Agricultural Research Center, Dokki, Giza, Egypt | ||||
| Abstract | ||||
| The main objective of this investigation is to study and • evaluate the technical and economical conditions for the appropriate performance of a multi-purpose combine harvester for local manufacturing under Egyptian conditions. Four different parameters were considered using two different types of combine harvesters, namely, Yanmar 760 (Crawler type, 2.10m harvesting width and reel type header) and Kader-Ocoria combine (Wheel type, 2.10m harvesting width and reel type header ) while harvesting wheat (Sakha 69 variety) and rice (Sakha 101 variety) crops. 1)-The effect of soil compaction induced by combine harvesters on physical properties of soil under two different levels of soil moisture content: 42.55% and 28.81% (db.), two different weights for combine harvester (with empty and full grain tank) and two levels of tire inflation pressure (2.0 and 2.5 bar, for drive Wheel of Kader-Cicoria combine only, while harvesting rice crop only. 2)- held capacity and efficiency for both types of combines during harvesting wheat and rice crops under different forward speeds of (0.42', 0.69 and 0.94 m/s) for wheat crop and ( 0.33 , 0.60 and 0.78 m/s) for rice crop. 3)- Total grain losses for each combine were determined at grain moisture contents of (14.70, 17.50 and 20.24%) for wheat crop and (16.23, 20.91 and 24.85 %) for rice crop. 4)- Harvesting costs indicators were evaluated for both types of combine harvesters . The main results show the following: • Wheel type combine harvester at any inflation pressure and soil moisture content gave the highest values of soil compaction represented by soil bulk density and soil penetration resistance. • It could be used at soil moisture less than 40% (at late harvesting). • Using Crawler type combine harvester gave low values of the total grain losses and total grain damage during harvesting wheat or rice crops at any combine forward speed and grain moisture content. • Crawler type combine gave the highest criterion cost although it gave the lowest grain losses and damage compared with Wheel type combine for harvesting wheat and rice crops. The main reason may be the Initial cost of the Crawler type . | ||||
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