Coupling bionic double-circular disc furrow opener applicable to sticky and heavy soil

Abstract

The invention relates to a coupling bionic double-circular disc furrow opener applicable to sticky and heavy soil, and belongs to the field of agricultural mechanical equipment. Ellipsoid curve surface convex bulges arranged in the circumference of the circular disc are arranged on the outer surface of each of the two circular discs of the double-circular disc furrow opener; flexible micro thornsare arranged at one side, near the center of the circular disc, of the ellipsoid curve surface convex bulges; the ellipsoid curve surface convex bulges and the flexible micro thorns are connected intoa whole to form a micro thorn convex bulge coupling bionic surface structure; the structures are uniformly distributed in the radial direction of the circumference of the circular disc work surface and are uniformly arranged into multilayers. In the work process of the furrow opener, the contact area with the soil can be reduced through the sawtooth-shaped cutting edge; the furrow opening resistance is reduced; the circular disc surface and the soil are in contact, and can form a water film; the water film continuity can be damaged through the bionic surface structure of the micro thorn convex bulges; the adhesion is reduced; the friction resistance is reduced; meanwhile, the flexible micro thorns can deform through friction; tiny vibration can be generated when the furrow opener goes outfrom the soil, so that soil blocks adhered onto the surface of the circular disc can more easily fall off; the furrow opening quality and the work efficiency are improved.

Description

technical field [0001] The invention relates to a coupled bionic double disc ditch opener suitable for sticky and heavy soil, which belongs to the technical field of agricultural machinery and equipment. Background technique [0002] The double disc opener is an important working part of the no-tillage seeder. Its principle is to use two rotating flat discs to cut the soil and push the soil to both sides to form a seed ditch with the same depth and flat shape. . The disc surface of ordinary double-disc openers is smooth and flat. During the ditching process, when the disc surface is in contact with the soil, it will cause stickiness due to the capillary force and viscous force caused by the continuous water ring or water film at the contact interface. Attached, this will increase soil disturbance and form a continuous water ring or water film, making the soil bonded to the surface of the disc difficult to fall off, increasing the resistance of ditching and affecting the qua...

AI Technical Summary

Problems solved by technology

[0005] Breakthroughs have been made in designing the shape and structure of soil-contacting parts by using bionics as a research method to reduce the adhesion and resistance of soil to soil-contacting parts. The complexity makes it difficult to control the anti-adhesion and drag reduction. The adhesion of the soil seriously reduces the operating efficiency and quality of the ground machinery, increases energy consumption, and even makes the machine unable to operate.

[0006] However, the currently known soil-contacting parts of dryland agricultural machinery with bionic geometric structures often adopt a single surface convex hull form. Although they have excellent operating results in dry areas, it has been found in the actual promotion of paddy field areas with heavy soil that It has a certain restrictive effect on the anti-adhesion and drag reduction of soil. In the vast paddy fields of our country, the soil characteristics are different, and the requirements for anti-adhesion and drag reduction are also different.

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