Needle suction type seed sowing mechanism

Abstract

The invention provides a needle suction type seed sowing mechanism, belonging to the field of agricultural machinery. The needle suction type seed sowing mechanism comprises a rack, and a vacuum pump, a driving motor, a small chain wheel, a connecting lever shaft assembly, a guide rod fixing shaft, a cam shaft assembly, a large chain wheel, a seed suction and discharging assembly, a first supporting rod assembly, a second supporting rod assembly, a seed box and an air suction pipe which are arranged on the rack, wherein negative pressure is formed in an inner cavity of an air chamber pipe in the seed suction and discharging assembly under the action of the vacuum pump; the driving motor drives a cam shaft in the cam shaft assembly to rotate; and a cam drives the connecting lever shaft assembly to swing and supporting rods to shake. A guide rod on the guide rod fixing shaft, the air chamber pipe in the seed suction and discharging assembly and a seed suction pipe finish a whole suction and discharging process under the common effect of a connecting lever, the supporting rods, a slide way and a spring. The needle suction type seed sowing mechanism adopts an air suction type seed fetching principle and is suitable for being used in a Chinese medicinal material mechanical direct seeding working process; and the characteristics of small grain diameters, light weight and irregular shapes of Chinese medicinal materials and agricultural requirements of single-seed precision sowing, small row spacing and narrow line spacing are met.

Description

technical field [0001] The invention belongs to the field of agricultural machinery, and in particular relates to a needle-suction seeding mechanism used in a direct seeding machine for Chinese herbal medicines. Background technique [0002] In recent years, with social progress and economic development, the demand for Chinese medicinal materials in domestic and foreign markets has continued to expand, and the price of Chinese medicinal materials has also risen sharply, with the price increase of most varieties reaching several times or even dozens of times. Affected by the price leverage, the planting area of ​​Chinese herbal medicines has increased significantly in various places. The traditional manual planting of Chinese herbal medicines has been difficult to meet the needs of this rapid development trend. Therefore, drug farmers are in urgent need of machines and tools that are compatible with the planting mode of Chinese herbal medicines. [0003] At present, my count...

AI Technical Summary

Problems solved by technology

These seed metering devices cannot meet the characteristics of small particle size, light weight, and irregular shape of most Chinese herbal medicine seeds, and the agronomic requirements of single seed precision sowing, small plant spacing, and narrow row spacing during direct seeding operations.

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