Design and Experiment of Comb-Brush and Air-Suction Compound Type Flax Capsule Harvesting Test Bench

Abstract

In view of the problem of plant entanglement threshing roller in the process of mechanized flax harvesting, a comb-brush air-suction composite flax capsule harvesting test stand was designed based on the harvesting method of harvesting capsules independently and then breaking the capsules to thresh them. The following four parameters were selected as experimental factors: the shape of comb tooth cross-section, the rotational speed of comb roller, the relative speed of machine travel and the air volume of centrifugal fan. The following four indicators were chosen as the experimental indicators: capsule removal rate, capsule breakage rate, capsule collection rate and plant winding rate. A four-factor and three-level orthogonal test was conducted. The results showed that the optimal combination of test factors was as follows: the shape of comb tooth cross-section was rectangular, the rotational speed of the brush roller was 90 rad/min, the speed of machine travel relative to the plant was 80 mm/s and the air volume of centrifugal fan was 6000 m3/h. Under the condition of better experiment parameters combination, the capsule removal rate was 96.45%, capsule shell breaking rate was 98.79%, capsule collection rate was 95.65% and flax plants winding rate was 2.52%. The comb-brush air-suction composite flax capsule harvesting test bench provided the feasibility scheme for the problem of plant winding thresher roller and capsule collection.

Research on the automatic navigation control system of Lycium barbarum spray machine based on Beidou navigation system

“…It is widely planted in regions such as Ningxia, Xinjiang, and Gansu [1][2][3][4] . However, the complex and varied terrain of plantations and irregular growth of fruit trees result in low mechanization and high manual labor intensity in the sowing, plant protection, and harvesting processes of Lycium barbarum [5][6][7][8][9] . The automatic navigation operation system of Lycium barbarum spraying machine can achieve unmanned operation, reduce manual labor intensity and production costs, improve the quality of spraying operation, and is of great significance for Lycium barbarum production.…”