To improve the mechanized harvesting rate of jujube in Xinjiang,a small vibration harvester based on an electric tricycle was designed and developed,taking into account the characteristics of dwarf dense planting jujube.The machine mainly consists of electric tricycle,vibration DC motor,single eccentric block,and clamping device.The study analyzed the conditions of vibration fruit falling,measured the connection force of jujube and jujube branches during different harvest periods,and calculated the natural frequency of jujube tree by 3D modeling and simulation.We conducted single-factor and orthogonal field experiments on four factors:machine vibration motor speed,eccentric block weight,clamp height and vibration duration,and processed the data.The results showed that the optimal combination for the highest harvesting efficiency was achieved when the motor speed was 1 140 r/min,the eccentric block mass was 650 g,the clamping height was 300 mm,and the vibration duration was 9 s.The study also revealed the sequence of the factors with the significant influence on recovery efficiency is clamping height,vibration speed,weight of eccentric block and vibration duration.The optimal combination is tested and the average harvesting efficiency is 90.32%.Our research provides a theoretical basis and technical reference for the design of jujube vibration harvester in dwarf and dense planted orchards.
维普
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