关键词: 朝天椒, 物料特性, 结合力, 悬浮速度, 参数测定, 风选分离

Abstract: As China is a large pepper producing country, the mechanical harvesting of pepper is gradually replacing manual harvesting, so the key parts of the harvester need to be optimized due to the high rate of mechanical harvesting leakage and the rate of contamination, and the optimization lacks the reference of relevant parameters, therefore, the parameters related to the mixture of Chaotian pepper (cluster Chaotian pepper) harvested by pepper harvesters in Guizhou were measured and simulated, including the material properties of pepper and pepper leaves, the binding force of fruit and fruit stalk, and the suspension speed of pepper mixture. The comparative analysis between the measured and simulated parameters shows that: the binding force between pepper fruit and stalk was 11.54 N, and the binding force between stalk and pepper stalk was 10.11 N; the suspension velocity of Chaotian pepper fruit was 13.37 m/s, the suspension velocity of pepper leaf was 3.71 m/s, and the suspension velocity of pepper stalk was 8.96 m/s, this study can provide a reference for the improvement of the harvesting performance of the pepper harvester and the optimization of the pepper wind separating device.

Key words: Chaotian pepper, material properties, binding force, suspension speed, parameter determination, air separation