Same-speed air cavity rolling type bunch planting device

Abstract

The invention relates to a component on an agricultural sowing machine, in particular to an air cavity rolling type precision bunch planting device applicable to a precision sowing machine. The bunch planting device provided by the invention mainly comprises a bunch planting roller (1), a lamination wheel (2) and a negative pressure seed acquiring device body (18), wherein the bunch planting roller (1), the lamination wheel (2), the negative pressure seed acquiring device body (18) and a roller spindle (6) are connected by virtue of bearings, the lamination wheel (2) is fixedly connected with the negative pressure seed acquiring device body (18) by virtue of a reinforcing plate (3) fixedly connected with the lamination wheel (2) or is directly fixedly connected with the negative pressure seed acquiring device body (18) by virtue of a connecting piece, and a gas check block (27) fixedly connected with the roller spindle (6) is arranged in the negative pressure seed acquiring device body (18). The bunch planting device provided by the invention has the advantages that: negative pressure cavity rotation and slide block gas check are combined to realize precision sowing, a negative pressure cavity has good impermeability, thus a negative pressure is more stable, air leakage of the negative pressure cavity is reduced, the seed acquiring rate is improved, and the cavity rate is reduced; and the sowing speed can be obviously improved.

Description

technical field [0001] The invention relates to a component on an agricultural seeder, in particular to an air cavity rolling precision hole sowing device, which is suitable for use on a precision seeder. technical background [0002] At present, with the continuous and in-depth development of precision agriculture, precision sowing agricultural machinery as the sowing link in precision agriculture has also accelerated the pace of modernization of agricultural machinery. Especially a kind of precision hole sowing machine, due to the need of expensive fine seeds and precision agronomy, new technologies of this machine have emerged in recent years, and new products have been released continuously, such as air suction precision seeder and air suction membrane precision seeder The hole seeder has been more and more widely used in precision seeding operations in our country. It can perform precise precision seeding on corn, sunflower, seed melon, watermelon, cotton, sugar beet, p...

AI Technical Summary

Problems solved by technology

The possible defect of this device is that when the seeds are sucked by the negative pressure chamber, due to unavoidable structural reasons (such as local air leakage), the seeds may not be sucked, which will lead to seed leakage, so the inventor conducted experimental research, It is expected that the suction plate and the negative pressure chamber will not move relative to each other, but the negative pressure seed suction device will rotate as a whole, so that the suction plate and the negative pressure chamber will be tightly combined to solve the problem of air leakage, but the following technical problems are involved. The pressure chamber needs uninterrupted pumping when it is working, and it must be controlled by pipelines or circuits. If the negative pressure suction device rotates as a whole, it is easy to interfere with each other in the structure.

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