DEVELOPMENT OF THE GRAIN CONVEYING UNIT FOR FIAT COMBINE HARVESTER | ||||
| Journal of Soil Sciences and Agricultural Engineering | ||||
| Article 1, Volume 28, Issue 10, October 2003, Page 7405-7417 PDF (3.35 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jssae.2003.245304 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| M. Metwally,; M. EI-Iraq; S. EI-khawaga; A. EI-Keway | ||||
| Agric. Eng. Res. Institute, (AEnRI), Dokki, Giza, Egypt. | ||||
| Abstract | ||||
| The main purpose of this study is to develop the grain-conveying unit to the grain tank of Fiat combine harvester. The modified grain conveying unit was proposed to avoid the continues wearing in the transmission bevel gearbox of distribution auger and grain elevator. to increase the combine field capacity and to improve overall efficiency of the combine. The grain-conveying unit includes elevator, bevel gearbox and grain distribution auger. The grain-conveying unit 0 f Fiat combine was developed in this study on two stages, the first stage was to change the fixing place of grain elevator and distribution auger with respect to the grain tank. While, the second stage was to change the transmission bevel gearbox between distribution auger and grain elevator by two sprocket wheels and chain. The development was carried out in a private workshop in Mansoura City. The field experiments were conducted at different far-ms in Dakhalia Governorate during the wheat harvesting seasons of 2002 and 2003. Harvesting of Sakha 93 wheat variety was carried out using the Fiat combine harvester before and after development taking place. The total losses, field capacity and efficiency, combine performance efficiency and criterion harvesting cost as a function of change in drum speed, grain moisture content and reel index were considered. Development of grain conveying unit of the grain tank of Fiat combine harvester decreased the total grain losses by about 1.8-4% and the total grain damage (visible and invisible) by about 15-30% compared with its results before development. Using the developed combine improved overall performance efficiency and recorded the maximum values of effective field capacity and efficiency (3.03 fed.lh and 76.4%, respectively) compared with the performance of un-developed combine (2.88 fed.lh and 63.9 %, respectively) at forward speed of 4.5 km/h. The minimum value of criterion cost (120.89LE/fed.) was recorded with the developed combine at drum speed of 30.2 mIs, reel index 1 :1.3 and grain moisture content of 20.2% compared with 126.87 LE/fed for the un-developed combine under the same previous conditions. | ||||
|
Statistics Article View: 41 PDF Download: 159 |
||||
