Accurate seed throwing mechanism and accurate seed throwing method of corn planter

Abstract

The invention relates to an accurate seed throwing mechanism and an accurate seed throwing method of a corn planter. The accurate seed throwing mechanism comprises a control part, a driving part and an executing part, wherein the executing part comprises a seed sowing device, a seed taking unit and a seed conveying unit; seeds can be adsorbed by profiled holes in a seed plate under the action of negative pressure, residual seeds are removed after the seeds adsorbed in the profiled holes in the seed plate pass through a seed scraping plate which is positioned above the left part of the seed sowing device, and only one seed is left in each profiled hole; pulling fingers of a seed taking wheel are used for pulling out the seeds which are about to drop in order and enabling the seeds to enter grilles formed by the pulling fingers and a seed guiding groove, the seeds are pushed to the left upper part of a conveyor belt by the pulling fingers and are thrown out, the seeds fall into separating grooves of the conveyor belt under the action of gravitation and move to the bottom part of the seed conveying unit along with the conveyor belt, and the seeds can fall onto a seedbed under the action of a pushing force of separating plates of the conveyor belt and the self gravitation of the seeds. The electrically-driven accurate seed throwing mechanism disclosed by the invention is capable of initiatively taking the seeds, accurately conveying the seeds, realizing real-time zero-speed seed throwing and maintaining the spacing accuracy of the seeds and has the characteristics that the structure is simple, the adjustment is convenient, and the like.

Description

technical field [0001] The invention belongs to the field of automated agricultural equipment, and in particular relates to a precise seed delivery mechanism and a precise seed delivery method for a corn planter. Background technique [0002] With the development of precision seeding technology in our country, high-speed precision seeding has become the development trend of corn seeding. The qualified index of particle distance is an important index to measure the seeding quality of precision seeders. The accuracy of precision seed metering is mainly affected by the filling quality , Clearing seed quality, seeding height and seeding speed. The missed seeding index of the pneumatic precision seed meter with excellent performance is lower than 5%, and the reseeding rate is lower than 4%. Its various working indicators are better than the requirements of the national standard, so the quality of seed filling and clearing has been guaranteed to a certain extent. The seeding heig...

AI Technical Summary

Problems solved by technology

Since the angle between the vertical centerline and the horizontal direction of the seeding disc of the air suction seed metering device in this system is 66 degrees, most of the seeds in the seed filling chamber are accumulated on the inner surface of the front housing of the seed metering device under the action of gravity , leading to a decrease in the friction between the seeds and the seeding disc, which is not conducive to the adsorption of the seeds on the hole of the seeding disc under the action of the pressure difference. Compared with the vertically installed seed metering device, the inclined-installed air suction The wind pressure required by the seed meter increases, which leads to an increase in the power consumption of the seeding system; in addition, the system structure is more complicated

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