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- Title
板栗树振动响应特性与落果情况试验研究.
- Authors
韩元顺; 许林云; 周杰; 余兵
- Abstract
In order to solve the problem of low efficiency and high cost of artificial harvesting of chestnut, parameter support was provided for the design of mechanical vibration harvesting equipment of chestnut. For three chestnut trees, the acceleration response and fruit dropping on each branch of chestnut tree were studied by single eccentric vibration motor. The results indicated that the combined acceleration at the measured points of the trunk and branches of the three trees showed a quadratic curve growth relation with the excitation frequency, and the increase of excitation frequency was conducive to the enhancement of the vibration response of each branch of chestnut tree. However, due to the change of the distance from the excitation point and the diameter of the fruit branch, the vibration of each branch under the excitation of external force was often distributed unevenly, resulting in a certain difference in acceleration response characteristics in X, Y and Z directions at each measurement point. With the increase of excitation frequency, the dropping rate of chestnut ripening fruits and immature fruits also gradually increased. Through the analysis of comprehensive scoring method, it was concluded that under the excitation frequency of 18-22 Hz, the dropping rate of three trees was relatively ideal, which could achieve the purpose of selective harvesting.
- Subjects
VIBRATION (Mechanics); CASTANEA; HARVESTING equipment; TREE branches; FRUIT; CHESTNUT
- Publication
Acta Agriculturae Zhejiangensis, 2022, Vol 34, Issue 3, p599
- ISSN
1004-1524
- Publication type
Article
- DOI
10.3969/j.issn.1004-1524.2022.03.21