华南农业大学学报2025，Vol.46Issue(2)：265-277,13.DOI:10.7671/j.issn.1001-411X.202402019
振动式油茶果采收执行器设计与试验
Design and test of vibratory harvesting actuator for Camellia oleifera fruits
摘要
Abstract
[Objective]In order to improve the removal rate and harvesting efficiency of Camellia oleifera fruits,a vibratory C.oleifera fruit harvesting actuator was designed for the C.oleifera forest in the hilly area of southern China.[Method]The design of harvester head,harvester arm and hydraulic control system for the harvesting actuator of CZC40RY C.oleifera fruit harvester was completed.The vibration system mechanical model of vibration device-C.oleiferatree and the single pendulum dynamic model of C.oleifera fruit-C.oleifera branch were established.COMSOL and ANSYS softwares were used to complete the free mode response and harmonic response analysis of the 3D model of C.oleifera tree.The Box-Behnken test method was used to determine the optimal operating parameters of the harvesting actuator with vibration frequency,amplitude and vibration time as the test factors,and the removal rate and flower drop rate as the test indexes.[Result]The vibration frequency and the main factors affecting the amplitude were determined when the tree was subjected to the simple harmonic exciting force,and the shedding acceleration of C.oleifera fruits was 947.63 m/s2,and the frequency range of the vibration device was 15-25 Hz.The harvesting test of C.oleifera forest verified that when the vibration frequency was 21 Hz,the amplitude was 10 mm and the vibration time was 10 s,the average removal rate of the harvesting actuator was 95.5%,and the flower drop rate was 2.1%.Through comparative analysis of the harvesting parameters with vibratory C.oleifera fruit harvesters,there were obvious differences in the shedding frequency,size and maturity of C.oleifera fruits in different regions,different varieties and even the same C.oleifera tree.The divide order vibration harvesting method was proposed,and the vibration frequency-vibration time relationship diagram was given.[Conclusion]The harvesting actuator can meet the mechanical harvesting needs of C.oleifera fruits.关键词
油茶果/采收执行器/分阶振动/采收参数Key words
Camellia oleiferafruit/Harvesting actuator/Divide order vibration/Harvesting parameter分类
农业科技引用本文复制引用
范志远,汤晶宇,寇欣,王东,曲振兴..振动式油茶果采收执行器设计与试验[J].华南农业大学学报,2025,46(2):265-277,13.基金项目
国家重点研发计划(2022YFD2202100) （2022YFD2202100）
国家林业和草原局应急科技项目(202202) （202202）
