Permanent-magnet magnetic-attraction precision seeding device

Abstract

The invention belongs to agricultural seeding machinery, and in particular relates to a permanent-magnet magnetic-attraction precision seeding device. A semi-open type seed box is arranged on the side of a roller; the roller is fixedly connected with a transmission shaft and follows the transmission shaft to rotate in the single direction; the upper edge of the wall of the roller is uniformly provided with a plurality of through holes in the circumferential direction; a permanent-magnet magnetic attraction head, a magnetic-attraction-head jacket, a magnetic-attraction-head cover plate and a pressure spring are arranged in each through hole; one end of the permanent-magnet magnetic attraction head is arranged in the magnetic-attraction-head jacket, and the other end of the permanent-magnet magnetic attraction head passes through a center hole of the magnetic-attraction-head cover plate but does not exceed the upper surface of the magnetic-attraction-head cover plate; the pressure spring is positioned between the magnetic-attraction-head jacket and the cover plate; a cylindrical cam is hollowly sleeved on the transmission shaft and is fixed; the outline of the cylindrical cam consists of a circular arc surface and a platform surface; and the platform surface is partially arranged on the lower part of the cam. The seeding device has the advantages of improving the magnetic attractive force of the magnetic attraction head, reducing the content of iron powder needed by magnetic-powder coatings of seeds, reducing the structure size of seeding elements and conveniently realizing the automatic seed-taking function and automatic seeding function of the magnetic attraction head.

Description

technical field [0001] The invention belongs to agricultural seeding machinery, in particular to a permanent magnet magnetic suction precision seeding device. Background technique [0002] Precision seeding is an advanced planting method, which has significant advantages such as saving seeds, reducing the workload of thinning, and increasing production and efficiency. At present, precision seeders mainly use pneumatic, mechanical, electromagnetic vibration and other seed metering principles and metering devices. Pneumatic precision seed metering device has no specific requirements on the shape of seeds and has high seeding accuracy, but the structure of the whole machine is complex, the manufacturing cost and technical requirements are high, and the pores are easy to be blocked; the mechanical precision seed metering device uses sockets, Seeds are sorted in the form of holes and other forms, the structure is simple, the speed of seeding is fast, but the precision of seeding...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a permanent magnet magnetic suction precision seed metering device that can automatically force seed metering, so as to overcome the shortcomings of the current electromagnetic magnetic seed metering device, such as complex electrical systems, large seed metering components, and easy heating.

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