An anti-injury seed metering device

Abstract

The invention relates to the field of agriculture machines, relates to a seeding machine of agriculture machines, and in particular relates to a seed damage prevention type precise seed-metering device which comprises a seed-metering box and a seed-metering shaft which longitudinally penetrates through the seed-metering box, wherein the upper end of the seed-metering box is a seed inlet; the bottom end of the seed-metering box is a seed-metering hole; a seed-metering wheel and a blocking wheel are mounted on the seed-metering shaft; the seed-metering wheel and the blocking wheel can axially move along with the seed-metering shaft; curved surface spiral seed-metering grooves are formed in one end close to one end of the seed-metering wheel, of the seed-metering wheel; axial seed-metering grooves are formed in the other end of the seed-metering wheel; baffle rings sleeve the axial seed-metering grooves; bulges matched with the axial seed-metering grooves are formed in the inner walls of the baffle rings, then the baffle rings can rotate along with the axial seed-metering grooves, and the baffle rings are limited in the axial direction of the body of the seed-metering box, so that the baffle rings cannot move along with the axial seed-metering grooves. As the curved surface spiral seed-metering grooves are formed in one end of the seed-metering wheel and are matched with the axial seed-metering grooves, the seed inlet which spans the upper part of the seed-metering box is always formed in the working surfaces of the curved surface spiral seed-metering grooves, and seeds can be uniformly and smoothly metered.

Description

technical field [0001] The invention relates to the field of agricultural machinery, in particular to a seeding machine in the agricultural machinery, in particular to an anti-damage type precision seed metering device. Background technique [0002] With the gradual promotion of scientific planting methods and the continuous improvement of agronomic requirements, the research on seeders has not only stopped at the primary goal of mechanized sowing, but has pursued the advanced goal of precision sowing. Precision planting technology can only rely on performance Only a good seeder can be put into practice in a large area, and the key to solving this problem lies in a seeder that can meet the requirements of precise sowing planting. At present, most of the seeders on the market use external groove wheel type seed metering devices and precision seed metering devices. The groove surface of the external groove wheel type seed metering device is a straight groove parallel to the ax...

AI Technical Summary

Problems solved by technology

At present, most of the seeders on the market use external groove wheel type seed metering devices and precision seed metering devices. The groove surface of the external groove wheel type seed metering device is a straight groove parallel to the axial direction. When seeding, a lower rotational speed is required, but if the rotational speed is too low and the upper shell of the seed box is to be crossed during work, the center of the straight groove and the upper shell of the seed box will not be discharged when the center of the seed box is opposite to the belt, so that There are broken seedlings; while the surface of the seeding wheel of the existing precision seed metering device is covered with potholes and grooves of a fixed size. When sowing small particles such as rapeseed and flax, the grooves will be filled with two or more Small seeds, easy to damage the seeds when they are discharged

Therefore, the existing seed metering devices often have problems such as inaccurate, uneven, and easily damaged seeds during the sowing process, which need to be further improved

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