A method and device for pneumatic fixed depth seeding

Abstract

The invention discloses a pneumatic type fixed-depth seed-metering method and device. The device comprises a fixing disc, a rotating disc and a push mechanism, wherein a positive pressure air chamber,a normal pressure air chamber and a negative pressure air chamber are formed inside the fixing disc; air holes communicated with outside are respectively formed in the positive pressure air chamber and the normal pressure air chamber; a mounting hole and a fixing hole are formed in the fixing disc; the rotating disc is mounted on the fixing disc by a connecting shaft; a shaft hole is formed in aposition, which corresponds to the mounting hole, of the rotating disc; a positive pressure air hole, a normal pressure air hole and a negative pressure air hole are respectively formed in the rotating disc; the positive pressure air hole is communicated with the positive pressure air chamber; the normal pressure air hole and the negative pressure air hole are respectively communicated with the normal pressure air chamber or the negative pressure air chamber; and the push mechanism is used for pushing seeds into soil in an injection manner and comprises a cylinder, a positive pressure air pipeand normal pressure and negative pressure air pipes. The travel and speed of the piston rod core are controlled by the cylinder so as to respectively realize accurate control of the soil depth and the soil speed of the seeds. The invention further discloses a pneumatic type fixed-depth seed-metering method for the device.

Description

technical field [0001] The invention relates to a sowing mechanical device and method, in particular to a pneumatic fixed-depth seeding method and device. Background technique [0002] Positioning sowing is a way to improve the accuracy and efficiency of sowing. Positioning includes two aspects of latitude and longitude distribution and depth. Precise depth-fixed sowing can make crops emerge neatly and have consistent growth stages, which in turn helps to evenly distribute individuals in the planting area, promote the group to make full use of environmental resources such as wind, light, heat, fertilizer, and water, and minimize competition within the group, thereby Increase group production. At present, the precision positioning seeding technology still has the problems of difficulty in controlling the depth, inaccurate falling of seeds, and displacement. The existing seeding technology and equipment mostly use the method of covering the soil after dropping the seeds at a...

AI Technical Summary

Problems solved by technology

The existing seeding technology and equipment mostly use the method of covering the soil after dropping the seeds at a certain height from the ground, which is difficult to accurately control the seed sowing depth

With the development of positioning technology and control technology, it is now possible to control the location of the seeds to a certain extent, that is, to make the seeds leave the metering device at a specific latitude and longitude position. However, it is difficult to control the motion inertia of the seeds during the process of entering the soil, causing the seeds to leave the metering device. After the machine is still moving, the final buried position is still uncontrollable

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