The Positive and Negative Synergistic Airflow-Type Jujube Fruit Harvester (P-N JH)

Low operation efficiency and poor working performance are the main reasons that restrict application of pneumatic date pickers. In this study, it is proposed to use positive pressure air flow blowing negative suction pick jujube fruit inertia remove impurities design a collaborative type harvester (P-N JH). The second-order regression model test factors response indexes was established by using central composite method, operating P-N JH evaluated comprehensively optimized, optimal combination parameters obtained: wind speed, travel speed were 16.8 m·s−1, 34.0 1.5 respectively. addition, verification results show pickup rate, impurity damage 97.21%, 2.15%, 1.08%, 2170 kg/h, not only meets requirements picking but also significantly improves compared with traditional air-suction harvester. This study can provide theoretical technical reference for harvesting air-suctioned dates; provides new way thinking picking.