Abstract: In order to meet the demand of efficient and intelligent picking of high-quality tea leaves, the paper proposed a technical scheme of high-quality tea picking based on the cultivation of tree canopy and tea canopy precise detection, and developed a 4CJ-1200F intelligent tea picking machine. The key mechanism and system such as tea canopy surface detection system and cutter adaptive adjusting mechanism were designed. With excellent performance and a certain level of intelligence, the machine can be controlled remotely, adapt to the tea garden with longitudinal slope less than 18° and transverse slope less than 20°, and be suitable for tea tree height of 60-110 cm.Preliminary field experiments showed that the average integrity rate of bud and leaf was 67.2%, and the average yield of tea was 90.4%, which met the standard of mechanized tea picking. As crown cultivation technology matures, the quality of tea picking with the machine will be further improved. This machine, combined with fresh tea leaf grading equipment, can be applied to the production of famous and high-quality tea, and bulk tea, providing technical equipment support for solving the current tea picking problems.

Key words: agricultural machinery, tea, tea canopy detection system, cutter adaptive adjustment, intelligent