Seed sowing device

Abstract

The invention discloses a seed sowing device, and relates to the technical field of agricultural machinery. The seed sowing device comprises a seed box, a seed sowing disc, a seed scraper and a rotary shaft which is connected with the seed sowing disc, wherein the seed sowing disc and the seed scraper are arranged in the seed box, the rotary shaft extends out from the bottom of the seed box; a plurality of seed containing holes are uniformly formed in the seed sowing disc; a seed sowing hole is formed in the box bottom of the seed box; the seed sowing disc is provided with a tapered sleeve having a small upper part and a big lower part; the upper end of the tapered sleeve is sealed; an outer edge at the lower end of the tapered sleeve extends outwards in an axial direction so as to form a circular ring body; the bottom surface of the circular ring body props against the inner bottom surface of the seed box; the top end of the rotary shaft is connected with the upper end of the tapered sleeve; a plurality of support bars are connected between the rotary shaft and the inner wall of the tapered sleeve; a plurality of seed containing holes are formed in the circular ring body; and each seed containing hole is a tapered hole having a big upper part and a small lower part. Compared with the prior art, according to the seed sowing device disclosed by the invention, the rotary frictional force between the seed sowing disc and the seed box is sharply reduced, so that the energy consumption can be reduced; and the seed filling capacity of each seed containing hole is high, so that miss seeding is avoided.

Description

technical field [0001] The invention relates to the technical field of agricultural machinery, in particular to a seed metering device for a seeder. Background technique [0002] The seed meter is one of the important parts of the planter. Its function is to guide the seeds in the seed box of the planter into a uniform seed flow or a single seed to control the seeding rate and achieve uniform sowing. There are many kinds of seed metering devices, mainly divided into row sowing seed metering device and hole sowing seed metering device. The horizontal disc seed metering device is a common hole sowing seed metering device. It has a simple structure and is suitable for low-speed sowing. The existing horizontal disk seed metering device comprises a seed box, a seed metering disc installed in the seed box, a rotating shaft connected to the seed metering disc and a seed scraper installed in the seed box, the seed metering disc is a plane disc, and the plane circle There are a plur...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a horizontal disc seed meter, which can solve the problems of large rotational friction and easy missing seeding of the existing horizontal disc seed meter

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