DEVELOPMENT AND TESTING OF A CENTRIFUGAL LIFTING-SCREENING WORKING ELEMENT FOR ENHANCED POTATO HARVESTING EFFICIENCY

Salokhiddinov Nurmukhammad Sotimboyevich

Authors

Salokhiddinov Nurmukhammad Sotimboyevich Senior Lecturer of the Department of “Technological Machines and Equipment” Namangan State Technical University

Keywords:

Potato harvester, Centrifugal separator, Lifting-screening element, Separation completeness, Tuber damage, Labor costs, Kinematic factor, KP-2, Efficiency.

Abstract

This study focuses on developing and testing a novel working element—a centrifugal lifting-screening screw elevator—to enhance potato harvesting efficiency and drastically reduce manual labor input. Conventional harvesters struggle with adequate soil separation, leading to high labor costs. Experimental trials were conducted using a modified KP-2 potato harvester-loader. The operational results confirmed the effectiveness of the new design. Key findings include a boost in potato purity to 99.4% and a reduction in tuber damage to 3.4%, which is well below the agrotechnical norm of 4.0%. Most notably, labor costs were cut by more than three times, falling from 20 person-hours/ha to just 3.3 person-hours/ha. The lighter and simpler machine design also yielded an annual economic effect of 25.041 million Sums per 100 ha. The centrifugal elevator is confirmed as a reliable and highly efficient solution for modern potato harvesting

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