自激振动力补偿红枣振动采收试验装置设计

针对传统的树冠强迫振动方法作业过程中采收效果差及伤树(枣)率高等问题,提出一种将自激振动理论与力补偿理论相结合的振动采收方式,并设计出一种基于自激振动力补偿的红枣采收试验装置,以提高振动采收效果,降低红枣与果树的损伤。为此,介绍了试验装置的结构与工作原理,并对关键工作部件进行了设计。通过对激振装置主要运动部件的运动过程进行理论分析,获得了拨杆滚筒的运动学方程,得出了拨杆滚筒的振幅表达式并分析了主要影响因素,同时计算出拨杆滚筒需要力补偿控制系统进行激振力补偿的扭转角度阈值为1 9.4°,为红枣采收试验装置的试验研究提供了理论基础。

Design of Jujube Harvest Test Device Based on Self-excited Vibration and Force Compensation

In order to improve the vibration recovery effect and reduce the damage of jujube trees and jujubes, a way combined self-excited vibration theory and force compensation theory was presented, and the jujube harvest test device based on self-excited vibration and force compensation was designed for poor harvest effect and high damage rate in the traditional operation process with crown forced vibration. This paper introduces the structure and working principle of the test device, and designed the key working parts. The kinematic equation of deflector rod roller was obtained by theoreti-cal analyze the motion process of vibration device’ s main moving parts, and the threshold of torsion angle when deflector rod roller need force compensation was 19 . 4 ° , and the expression of response amplitude was derived and the main influ-encing factors on amplitude were analyzed to provide a theoretical basis for experimental study of jujube harvest test de-vice.