KINEMATIC CHARACTERISTICS ANALYSIS AND TEST OF DOUBLE-ROW VIBRATING CASSAVA HARVESTER

Abstract

To address the low level of standardization in cassava planting and the poor operational performance of existing harvesting machinery in China, this study proposes a wide-ridge, double-row cassava planting pattern that integrates current agronomic practices with harvesting requirements. Based on this planting pattern, a double-row vibrating cassava harvester was designed, and its overall structure and key parameters were determined. Using analytical methods, the displacement equation and motion-trajectory equation of the digging-shovel tip were established, and the corresponding motion-trajectory plots were generated using MATLAB. The cutting, lifting, and impact interactions between the digging shovel and the soil/cassava–soil complex were theoretically analyzed. Field tests of the prototype showed that its pure working productivity reached ≥ 0.52 hm²/h, the clean-root rate was ≥ 97.33%, the damaged-root rate was ≤ 1.43%, and the total loss rate was ≤ 2.67%. The results demonstrate that the double-row vibrating cassava harvester operates stably and reliably. The vibrating digging shovel exhibits strong soil-breaking ability and enables rapid and effective separation of cassava from the soil. All performance indicators meet or exceed the design specifications.

Affiliated Institutions

• Jiangxi Agricultural University CN
• China Agricultural University CN
• Jiangxi Academy of Agricultural Sciences CN

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