Double-cavity constant-quantity seed supply double-grooved-wheel seed discharging device

Abstract

The invention belongs to the technical field of agricultural machinery, and relates to a double-cavity constant-quantity seed supply double-grooved-wheel seed discharging device, which mainly comprises a seed box, a positioning adjusting mechanism, a seed filling mechanism, a seed belt seed supply mechanism, an electric control mechanism and a seed discharging mechanism, and is characterized in that the seed box is divided into a seed filling cavity and a seed discharging cavity; a seed belt in a seed belt seed supply assembly is pressed on the outer surface of an upper grooved wheel of the seed filling mechanism under the cooperation of a belt shaft and a spring and rotates synchronously with the grooved wheel to form a seed protection area, seeds in a seed filling cavity are conveyed into the seed discharging cavity at a certain speed under the action of the upper grooved wheel and the seed belt, and the positioning adjusting mechanism can adjust the angle of the seeds initially entering the seed discharging cavity. The working state of the upper grooved wheel and the thickness of a seed layer in the seed discharging cavity can be controlled by the electric control mechanism and the position of a sensor, when the seed layer exceeds the installation height of the sensor, the upper grooved wheel stops seed filling, and when the seed layer is lower than the sensor, seed filling is started, so that the seed layer in the seed discharging cavity is stable, and seeds are discharged out of the device under the driving of a lower grooved wheel. According to the device, the problems of unstable seed supply, high seed damage rate and the like can be effectively solved.

Description

technical field [0001] The invention belongs to the technical field of agricultural machinery, and in particular relates to a double-chamber constant-quantity seed-supply double-groove wheel seed-discharging device. Background technique [0002] The seed meter is the core component of the seeder, and its working quality directly affects the sowing quality. At present, most of the most common seed metering devices are of grooved wheel type, which has the characteristics of simple structure, convenient use and adjustment, good versatility, and low price. The outer grooved wheel seed meter mainly discharges the seeds from the seed box by the grooved wheel. The disadvantages are: 1. With the progress of the sowing process, the amount of seeds in the seed box decreases continuously, resulting in a sharp drop in the filling capacity, making the filling area The amount of seed supply fluctuates, which directly affects the accuracy of constant seed supply. 2. The filling area of ​...

AI Technical Summary

Problems solved by technology

The outer grooved wheel seed meter mainly discharges the seeds from the seed box by the grooved wheel. The disadvantages are: 1. With the progress of the sowing process, the amount of seeds in the seed box decreases continuously, resulting in a sharp drop in the filling capacity, making the filling area The amount of seed supply fluctuates, which directly affects the accuracy of constant seed supply

2. The filling area of ​​the seed box is located directly above the seed metering wheel, causing all the seeds to be directly accumulated on the seed metering device, making the seed drive layer too thick, which intensifies the friction between the seeds, and causes the seeds to be easily damaged. The seeding of the device and the clearing of the clearing mechanism will cause certain difficulties

[0003] The partition board designed by the patent No. ZL200610035507.6 "Inner Seed Clearing Hole Wheel Rice Seed Meter" is installed in the filling chamber nearly vertically, and the filling chamber is divided into two chambers, the main chamber and the auxiliary chamber. When there are enough seeds, the seeds brushed by the seed cleaning wheel cannot reach the auxiliary chamber, causing blockage

At the same time, squeezing the seeds on the seed cleaning wheel will also affect the seed cleaning effect

[0004] In order to solve the problems of unstable supply and high seed damage rate of the existing external groove wheel seed metering device, it is necessary to design a seed metering device with reasonable structure, stable constant seed supply and low seed damage rate

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