Authors

Abstract

In this study, a central unloading reel structure was proposed to achieve continuous harvest of Cerasus humilis, and an indoor test bench was constructed to carry out the combing test of branches. The cross-section of the comb was made of an isosceles triangle, and an orthogonal test was carried out with tooth gap, winch rotational velocity and cross-section base angle as test factors, and fruit breakage rate and leakage rate as test indicators. The results show that the tooth gap and winch rotational velocity have a significant influence on the breakage rate, and the tooth gap and section bottom angle have a significant influence on the fruit leakage rate. Considering the comprehensive loss rate, the appropriate deformation of the comb teeth and the manufacturing difficulty, the optimal values of the three test factors are 10 mm, 160 r/min, and 45°, respectively. At the same time, the maximum combing force of a single branch through the comb is 240 N through the pressure sensor of the test bench. The experimental results can be used as the basis for the structural design of continuous harvesting head.

Abstract in Chinese

本研究设想了一种滚筒中心卸载果实的结构以实现钙果的连续采收，制作了一个室内试验台进行整枝的梳脱试验。梳齿截面采用等腰三角形，以齿间隙、绞盘转速和截面底角为试验因素，以果实破损率和泄露率为试验指标，进行了正交试验，分析了各试验因素对各个指标的影响机制。结果表明，齿间隙和绞盘转速对破损率有着显著的影响，齿间隙和截面底角对漏果率有着显著的影响，考虑综合损失率、梳齿的适当变形和制造难度，三个试验因素的最佳值分别为：10 mm、160 r/min、45°。同时，通过试验台的压力传感器得到单个枝条通过梳齿的最大梳脱力为240 N。试验结果可以作为连续收获采摘头的结构设计依据。