关键词: 下桩采摘, 青花椒, 脱粒装置, 正交试验

Abstract: Most of the production of Chinese prickly ash in Chongqing is based on the family planting and operation mode of smallscale farmers. In view of the “main branch retraction picking technology”, that is, the green Zanthoxylum material after branch is picked and dried, an impact threshing device with compact structure and low power consumption is designed. The key components such as feeding component, threshing component and stirring gear rod device were designed and analyzed to determine the structure and working parameters of each part of the device. The finite element analysis of the threshing device was carried out using ANSYS Workbench software, and the vibration of the frame was less affected. The static analysis of the telescopic teeth of the feeding mechanism of the device was carried out to meet the strength requirements. The prototype was manufactured and assembled, and the orthogonal test was carried out on the prototype. Under the condition of the threshing speed of 170 r/min, the input speed of 13 m/min, and the segmented sleeve threshing element, the threshing rate of the material reached 94.01%, and the impurity rate was 6.33%, thus the better threshing effect was achieved.

Key words: branch picking, green Zanthoxylum, threshing device, orthogonal test