RU84179U1 - ROTARY SHOPPING - Google Patents

Abstract

1. Rotary cultivator, which is a tillage tool, including a frame, rotary working knives with a truncated cone working surface fixed to hubs with spokes for rotation, characterized in that plate knives are radially mounted on the inner working surface of the knives, this their bases are located along the generatrix of the working surface of the rotary tillage organs. ! 2. Rotary cultivator according to claim 1, characterized in that the blade knives are made in the form of a triangle having two-sided sharpening of the cutting edge mounted with a sharp edge with an angle α1 forward, while the value of angle α1 is determined by the formula: α1≥90- (ε + φ), where ε is the rear cutting angle of the rotary tillage organ; φ is the angle of friction of the knife material on the soil.

Description

The utility model relates to agricultural machinery, in particular to tillage machines, used for surface tillage and the destruction of pests, pathogens of cultivated plants and weed seeds.

Tillage tools are known: USSR author's certificate No. 1376959, А01В 35/28, 1988, and USSR author's certificate No. 1496651, А01В 35/16, 1989. However, these soil cultivating tools carry out loosening of the soil without its turnover and seeding of weed seeds. They cannot be used for peeling soil.

The prototype is a rotary cultivator (RF patent No. 2331178 IPC AB 79/00, 2008). The disadvantages of this prototype is that it produces surface treatment (loosening) of the soil, the destruction of weeds without wrapping, i.e. acts as a cultivator for continuous tillage.

In order to eliminate these shortcomings and improve the quality of soil cultivation, the destruction of pests, pathogens of cultivated plants and weed seeds, in the proposed rotary cultivator, which is a tillage implement that includes a frame, rotary working knives with a working surface in the form of a truncated cone, mounted on rotary knitting hubs, plate knives are radially mounted on the inner working surface of the knives, while their bases are arranged to form them the working surface of rotary tillage organs. Lamellar knives are made in the form of a triangle having two-sided sharpening of the cutting edge, set with a sharp edge with an angle α ₁ - forward. Moreover, the angle α ₁ - is determined by the formula:

α ₁ ≥90 ° - (ε + φ),

where ε is the rear cutting angle of the rotary tillage organ;

φ is the angle of friction of the knife material on the soil.

The proposed utility model has significant and distinctive features that form a new population, not known from the "prior art", from the prototype:

- lamellar knives are radially mounted on the inner working surface of the rotary working bodies - knives, while their bases are located along the generatrices of the working surface of the rotary tillage organs.

- lamellar knives are made in the form of a triangle having two-sided sharpening of the cutting edge, set with a sharp edge with an angle α ₁ - forward, while the value of the angle α ₁ is determined by the formula:

α ₁ ≥90 ° - (ε + φ),

where ε is the rear cutting angle of the rotary tillage organ;

φ is the angle of friction of the knife material on the soil.

The proposed rotary hoe is presented in figures 1-5:

figure 1 tiller rotary, top view;

figure 2 - working body, side view;

figa - working body, front view;

figb - section along BB in figa;

Fig. 4 is a view A in Fig. 3b;

5 is a flow chart of the rotation of the soil tillage organ of the cultivator.

Rotary cultivator consists of a frame 1 (Fig. 1), rotary working bodies - knives 2, mounted on the hubs 3 (Fig. 2) with spokes 4 rotatably. While the rotary working bodies - knives 2 are installed in such a way that they form an angle of attack α (Fig. 1) to the direction of movement, the angle of inclination β (Figs. 2, 4) to the vertical.

On the inner working surface of the knives 2 radially mounted blade knives 5 (figure 2).

Moreover, their bases are located along the generatrices PS (Fig. 4) of the working surface of rotary tillage organs.

Lamellar knives 5 (Fig. 1) are made in the form of a triangle having two-sided sharpening of the cutting edge (Fig. 4), mounted with a sharp edge with an angle α ₁ - forward.

Moreover, the angle α ₁ is determined by the formula:

α ₁ ≥90 ° - (ε + φ),

where ε is the rear cutting angle of the rotary tillage organ (figure 4);

φ is the angle of friction of the knife material on the soil.

The principle of operation of the rotary tiller is as follows:

When moving across the field, each knife 2 (Figs. 1, 5) fixed on the hubs 3 (Fig. 2) with spokes 4 rotatably due to the angles α and β, as well as as a result of the interaction of the cutting edge 6 (Fig. 4 ) with the surface of the field, penetrates the soil to the depth of processing and moves at this depth in the direction of movement of the rotary cultivator. In this case, as a result of the influence of friction forces from the side of the treated soil layer on the working surface 7 of each knife 2 (Figs. 1, 4), a torque arises, forcing each knife 2 to make rotational movements. It turns out a sliding cutting of the soil with a cutting edge 6 (figure 4).

When the rotation of the rotary organ 2 (Figs. 1, 5), the soil layers 8 (Fig. 5) are cut into separate pieces by lamellar knives 5 (Fig. 2), rotating together with them, they rise to a certain height and, when they fall, they turn over and cover part of the crop residues, pests and pathogens of cultivated plants and weed seeds to provoke them to germinate.

The presence on the inner working surface of the rotary organs of radially mounted lamellar knives, in which the bases are located along the generatrices of the named working surface, creates conditions for high-quality soil cultivation by cutting the layer into separate pieces, providing it to be raised to a great height along the working surface and turn around with incorporating part of the crop residues, pests and pathogens of cultivated plants and weed seeds. And the implementation of lamellar knives in the form of a triangle having two-sided sharpening of the cutting edge, set with a sharp edge with an angle α ₁ - forward, improves the quality and reduces the energy intensity of soil cultivation.

At the same time, to obtain a sliding cutting of the soil along the blade, the condition must be met:

α ₁ ≥90 ° - (ε + φ),

where ε is the rear cutting angle of the rotary tillage organ (figure 4);

φ is the angle of friction of the knife material on the soil.

Claims (2)

1. Rotary cultivator, which is a tillage tool, including a frame, rotary working knives with a truncated cone working surface fixed to hubs with spokes for rotation, characterized in that plate knives are radially mounted on the inner working surface of the knives, this their bases are located along the generatrix of the working surface of the rotary tillage organs. 2. Rotary cultivator according to claim 1, characterized in that the blade knives are made in the form of a triangle having two-sided sharpening of the cutting edge mounted with a sharp edge with an angle α ₁ forward, while the angle α ₁ is determined by the formula: α ₁ ≥90- (ε + φ), where ε is the rear cutting angle of the rotary tillage organ; φ is the angle of friction of the knife material on the soil.