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The development of an improved stripping mechanism for sorghum harvesting

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  Paper number  131620136,  2013 Kansas City, Missouri, July 21 - July 24, 2013. (doi: http://dx.doi.org/10.13031/aim.20131620136) @2013
Authors:   Leticia Chico-Santamarta, Howard Masebu, David R White, Richard J Godwin, Mitchell Crook
Keywords:   sorghum stripper harvesting harvesting losses.

Abstract. The stripping mechanism offers much to harvest and partially thresh sorghum with a single mechanism. However, current stripper harvester designs were developed for wheat and barley and are not particularly effective for harvesting grains such as sorghum, which are a staple crop in many parts of the world. Therefore, an experimental rotational grain-stripping rig device was fabricated to study the effect of using re-designed and current commercial stripper fingers to strip sorghum grain from the grain panicles. The current commercial stripper finger was used as a reference finger against which three redesigned stripper fingers were evaluated at a range of rotational speeds, advance angles and cover vertical adjustment configurations for different sorghum varieties. The results showed that increasing the finger size by a scale factor of 1.5 operating in a 0.54 m diameter drum rotating at 200-300 rpm with finger advance angles between 45° and 60° significantly improved performance by reducing the non-harvested losses of the crop.

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