Click on “Download PDF” for the PDF version or on the title for the HTML version.

If you are not an ASABE member or if your employer has not arranged for access to the full-text, Click here for options.

Design of a Camellia oleifera canopy shaker with elliptical trajectory excitation

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  2021 ASABE Annual International Virtual Meeting  2100319.(doi:10.13031/aim.202100319)
Authors:   Tengfei Shen, Xiaoqiang Du, Zeqiang Sun, Zenghong Ma, Guofeng Zhang, Yongqing Cao, Xiaohua Yao
Keywords:   Click here to enter keywords and key phrases, separated by commas, with a period at the end

Abstract. With the increasing cultivation scale of Camellia oleifera in China, the demand for mechanical harvesting machinery is very urgent. Camellia oleifera fruit harvesting has become a bottleneck hindering the development of tea oil industry. In order to achieve high fruit harvesting percentage and low damage percentage of flower bud, a design scheme for harvesting Camellia oleifera fruit using an elliptical trajectory to excite the tree canopy was proposed. By studying the physical properties of Camellia oleifera, a three-dimensional tree model was constructed in SolidWorks. The three-dimensional model was flexibly processed in ANSYS, and then it was imported into ADAMS to complete the modeling of the flexible tree body. In ADAMS, the response of tree model to different excitation trajectories was compared. The results show that when the excitation frequency is 6 Hz, the maximum acceleration of the tree under the elliptical trajectory excitation is 2989.92 m/s2, and 1439.60 m/s2 under the linear trajectory excitation. The elliptical trajectory excitation is beneficial to improve the harvesting efficiency of Camellia oleifera fruit. Through ADAMS simulation, it is verified that the output end of the connecting rod follows a pseudo-ellipse trajectory. The long diameter of the pseudo-ellipse is 84 mm and the short diameter is 40 mm. A prototype of the canopy shaker was build to verify the feasibility of the elliptical trajectory excitation.

Keywords. Camellia oleifera fruit, canopy shaker, simulation analysis, elliptical trajectory

(Download PDF)    (Export to EndNotes)