Portable seeder for large-grain crops

Abstract

Provided is a portable seeder for large-grain crops. A first spring is connected between a supporting rod and a boosting component arranged beside the supporting rod, a duckbilled seed discharging part is arranged at the lower end of the boosting component, a cam is hinged to the boosting component, a second spring is connected between the boosting component and the cam, the cam is matched with a rolling wheel on the supporting rod, a pull rod is connected between the cam and the duckbilled seed discharging part, the boosting component is a tubular push rod, a seed box arranged beside the supporting rod is close to the push rod, a seed discharging opening is formed in the seed box, a notch is formed in the push rod, seed holes are formed in a seed discharging plate arranged in the push rod, and a seed scraping plate arranged at the bottom of the seed box is close to the seed discharging plate. When seeding operation is carried out after seeds are contained in the seed box, the supporting rod is supported on the ground, the push rod is pushed downwards, the duckbilled seed discharging part enters soil, redundant seeds on the seed discharging plate are scraped off by the seed scraping plate in the downward moving process of the seed discharging plate, seeds in the seed holes fall into the duckbilled seed discharging part, external force is removed after movement of the push rod is completed, the push rod returns upwards, the duckbilled seed discharging part is opened, the seeds fall into the soil, and then seeding can be completed.

Description

technical field [0001] The invention relates to a seeder, in particular to a portable large particle crop seeder. Background technique [0002] Large-scale planting of crops usually uses large seeders. In the research of crop breeding and comparative cultivation experiments, there are many experimental plots, the amount of seeds used is very small, and large seeders cannot be used, so hand-held seeders are usually used. The basic structure of a class of existing hand-held seeders is as follows: a propulsion member that can move up and down relative to the support rod is provided on the side, the propulsion member is a seed box, and a first spring is connected between the seed box and the support rod. The lower end of the box is equipped with a seed-discharging duckbill, and a cam is hinged on the seed box, and a second spring is connected between the cam and the seed box. There is a pull rod, and the seed box is equipped with a seed discharge mechanism. This type of seede...

AI Technical Summary

Problems solved by technology

However, the seeding mechanism of the existing hand-held seeder is realized by the gear transmission structure located in the seed box, and this transmission structure still appears to be relatively complicated; secondly, this transmission structure is prone to seed jamming, resulting in missed sowing ; Moreover, the number of varieties is large, and the breeding or cultivation experiment with a small amount of each variety has a higher frequency of changing seeds. Because the seed metering device of the seeding mechanism is arranged in the seed box, it takes a long time to change kinds, and the seeds are easy to remain. Will lead to a decrease in seeding efficiency and variety purity

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