RU209601U1 - WORKING BODY OF THE TILLING CUTTER WITH A VERTICAL AXIS OF ROTATION - Google Patents

Abstract

The utility model relates to the field of agricultural engineering, in particular to tillage cutters with a vertical axis of rotation. The technical result is to reduce the energy intensity of the tillage process and improve the quality of crumbling. The technical result is achieved due to the fact that the rack has the shape of a hexagonal straight prism and it is possible to hang from one to four cutting blades on it using dimensional cylindrical bushings. The working body of the tillage cutter works as follows: before the start of milling (tillage), the working body is assembled based on the agrotechnical requirements for tillage for given soil conditions, taking into account the type of soil, particle size distribution, moisture, hardness, depth of processing, weediness and others, choosing optimal number of undercutting blades. Having assembled the working body, they fix it on the rotor holder and set the cutter in motion. The undercutting blade and stand enter the soil at the specified working depth and intensively crush it. Cutting the soil with such a working body is carried out not with a stand, but only with undercutting blades, the operation of which, as you know, requires significantly less energy consumption than for cutting (processing) with a flat stand, since the crushing of the soil by the stand does not occur. The undercutting blades crumble the soil, decompacting it with both external and internal parts without compaction and scattering on the sides, which affects the minimum energy consumption.

Description

The utility model relates to the field of agricultural engineering, in particular to tillage cutters with a vertical (steep) axis of rotation.

Analogues of active working bodies of tillage implements are known, containing a rack and two internal and external cutting blades located at right angles (RF patent for utility model No. 150776, class A01B 33/06, 2015; RF patent for utility model No. 166354, class A01B 33/02, 2016).

The disadvantage of these technical solutions is the presence of undercutting blades, the cutting edges of which are located behind the cutting edge of the rack of the working body, which causes increased soil resistance during its processing.

The closest analogue to the claimed object is the working body of a tillage cutter with a vertical axis of rotation, containing a rack, on the outside of which two pruning blades are welded at a distance of (6...7) cm from each other, inclined to the horizon at an angle of (3...4)° , and the tip of each blade is advanced along the direction of rotation by 2 cm (RF patent for utility model No. 20280077, class A01B 33/02, 2021).

This technical solution has disadvantages:

relatively large rack width;

there is no possibility of shifting the cutting blades in height and width;

limited use of the number of undercutting blades;

lack of 6 internal trimming blades;

limited functionality of the application.

This leads to additional energy consumption for tillage and reduces the quality of its cultivation.

It is known that undercutting blades practically do not affect the energy consumption in tillage. The main energy costs are to overcome the resistance of the soil caused by the knife stand. It is the plane of the knife stand during its operation that does not coincide in direction with the cutting speed (a relatively large angle of crumbling of the soil), which leads to crushing of the soil by the side surface of the stand, and not cutting it. This affects the additional energy costs in tillage.

The large width of the rack compared to its length affects the relatively large spread of soil clods on the sides, which worsens its quality of processing.

The technical result is to reduce the energy intensity of the tillage process and improve the quality of crumbling.

The technical result is achieved due to the fact that the rack has the shape of a hexagonal straight prism and additionally contains two cutting blades located at a distance h=6...7 cm from each other, while the cutting blades are fixed on the rack using dimensional cylindrical bushings that determine the distance between cutting blades.

Since the set of distinguishing features of the utility model was not found in other technical solutions, it meets the criterion of "novelty".

The utility model is illustrated by drawings, where in Fig. 1 shows the working body of a tillage cutter with a vertical (steeply inclined) axis of rotation (isometric projection).

The working body of the cutter consists of a rack 1, cutting blades (knives 2), cylindrical dimensional bushings 3. Hole 4 serves to fasten the rack 1 to the rotor holder. The rotor holder is not shown in the drawing.

The working body of the tillage cutter works as follows: before the start of milling (tillage), the working body is assembled based on the agrotechnical requirements for tillage for given soil conditions, taking into account the type of soil, particle size distribution, moisture, hardness, tillage depth, weediness and others.

Depending on the structural composition of the soil and the depth of processing, the optimal number of cutting blades (knives) and the size of cylindrical bushings are set, which determines the distance between the knives (cutting blades).

Having assembled the working body, they fix it on the rotor holder, and set the cutter in motion. The undercutting blade 2 and the stand 1 enter the soil at a predetermined depth of processing and intensively crush it. Cutting the soil with such a working body is carried out not with a stand, but only with undercutting blades, the operation of which, as you know, requires significantly less energy consumption than for cutting (processing) with a flat stand, since the crushing of the soil by the stand does not occur. The undercutting blades crumble the soil, decompacting it with both external and internal parts without compaction and scattering on the sides, which affects the minimum energy consumption.

Sources of information:

1. RF patent for utility model No. 150776, class. A01B 33/06, 2015.

2. RF patent for utility model No. 166354, class. A01B 33/02, 2016.

3. RF patent for utility model No. 20280077, class A01B 33/02, 2021.

Claims (1)

The working body of a tillage cutter with a vertical axis of rotation, containing a rack with two pruning blades located at a distance of h=6...7 cm from each other, characterized in that the rack has the shape of a hexagonal straight prism and additionally contains two pruning blades, while the pruning blades fixed on the rack with dimensional cylindrical bushings that determine the distance between the undercutting blades.

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