RU220913U1 - DEVICE FOR SOIL TREATMENT - Google Patents

Abstract

The utility model relates to agriculture. The soil tillage device contains a shaft installed on the frame of the tillage implement by means of bearing devices and driven into rotational motion from the tractor power take-off shaft through a cardan transmission and a gearbox with a bevel gear. A horizontally located removable disk with the ability to attach knives is attached to the lower part of the vertically located shaft and secured with a nut with a left-hand thread. Knives with one-sided sharpening at a blade angle of 20° are installed in the depressions on the disk. The depth of the depressions is 1/3 of the thickness of the disk. The knives are made in two stages with the same length of horizontal steps. The peripheral step rises above the internal one by 0.04 m, and the angle of inclination of the lower plane of the knives to the horizontal is 3°. The quality of soil loosening is improved while energy intensity is reduced. 2 ill.

Description

The utility model relates to agricultural engineering, in particular to technical means for tillage.

The working body of a flat-cutting ripper is known [Copyright certificate RU patent No. 53100, IPC class. A0B 35/26, A0B 13/08, 2006], including a stand with a flat-cutting paw and a shoe on which stabilizers are located, mounted with the ability to change the position of their rear part along the installation angle depending on the condition of the soil.

The known device has disadvantages, which include poor cutting and clogging of the implement with weed residues, and therefore increased traction resistance.

The closest analogue to the claimed one, chosen as a prototype, is a device for tillage [Copyright certificate RU patent No. 152388, IPC class. A0B 35/28, A0B 21/06, A0B 33/06, 2015], including a shaft mounted on the frame of a tillage implement by means of bearing devices and driven into rotational motion from the tractor power take-off shaft through a cardan transmission and a gearbox with a bevel gear, horizontally located a removable disk attached to the bottom of a vertical shaft and secured with a nut with a left-hand thread, knives with one-sided sharpening at a blade angle of 20°, installed in depressions on the disk, the depth of which is 1/3 of the thickness of the disk.

The disadvantage of the prototype is the coarse loosening of the soil and high energy consumption when working on loamy soils with low humidity.

The technical result of the utility model is to improve the quality of soil loosening while reducing energy intensity.

The technical result is achieved due to the fact that the knives are made in two stages, with the same length of horizontal steps, the peripheral stage rises above the inner one by 0.04 m, and the angle of inclination of the lower plane of the knives to the horizontal is 3°.

This set of essential features ensures that the inventive device for soil cultivation has new properties that are different from the prototype.

Thus, the declared features of the utility model meet the “novelty” criterion.

In fig. 1 shows a diagram of a device for tillage, a side axonometric view, Fig. 2 - section A - A in Fig. 1.

A device for tillage comprising a shaft 2 mounted on the frame 3 of a tillage implement by means of bearing devices 5 and driven into rotational motion from the tractor power take-off shaft through a cardan drive and a gearbox 4 with a bevel gear, a horizontally located removable disk 1 attached to the bottom of a vertically located shaft 2 and fixed with a nut with a left-hand thread, knives with one-sided sharpening at a blade angle of 8 to 20°, installed in depressions on disk 1, the depth of which is 1/3 of the thickness of the disk, and the knives are made in two stages, with the same length of horizontal steps, the peripheral stage 7 rises above the inner 6 by 0.04 m, and the angle of inclination of the lower plane of the knives to the horizontal is 3°.

The soil treatment device operates as follows.

Before work, a removable disk 1 with two, three or four knives is installed on shaft 2, secured with bolts 9 in the depressions of the disk, depending on the type of soil, its moisture, the speed of movement of the unit and the depth of processing. The specific disk is selected experimentally during the first pass of the unit.

During the operating stroke of the unit, torque is transmitted from the tractor power take-off shaft through a cardan transmission, not shown, to a bevel gearbox 4, which drives a shaft 2 fixed in bearing devices 5 attached to the frame 3 of the soil-cultivating implement into rotational motion. The shaft rotates disk 1 with knives attached to it. The knives, rotating, penetrate the soil and cut the layer layer by layer. First, the peripheral stage of knives cuts with its sharpened blade 8 and loosens the top layer of the processed layer, and then, at a greater depth, the internal stage. Due to the fact that each stage of knives processes a soil layer of less thickness than the total depth of processing, higher-quality fine-clump loosening occurs with lower energy consumption compared to the prototype.

The angle of inclination of the lower plane of the knives to the horizontal of 3° makes it possible to eliminate the rubbing of the furrow and thereby reduce energy costs, both when burying the device in the soil and during working movement.

The blade angle of 20° allows, according to [Klenin N.I., Sakun V.A. Agricultural and reclamation machines - M.: Kolos, 1994. - P. 40.], carry out cutting of the layer without the formation of a compacted soil core, which also helps to reduce the energy intensity of the work.

Thus, the stated technical result is achieved.

Information sources

1 Copyright certificate RU No. 53100, IPC class. A0B 35/26, A0B 13/08, 2006.

2. Copyright certificate RU No. 152388, IPC class. A0B 35/28, A0B 21/06, A0B 33/06, 2015.

3. Klenin N.I., Sakun V.A. Agricultural and reclamation machines - M.: Kolos, 1994. - P. 40.

Claims (1)

A device for tillage, including a shaft mounted on the frame of a tillage implement by means of bearing devices and driven into rotational motion from the tractor power take-off shaft through a cardan drive and a gearbox with a bevel gear, a horizontally located removable disk with the ability to attach knives, attached to the bottom of a vertically located shaft and fixed with a nut with a left-hand thread, knives with one-sided sharpening at a blade angle of 20°, installed in depressions on the disk, the depth of which is 1/3 of the thickness of the disk, characterized in that the knives are made of two stages with the same length of horizontal steps, peripheral the step rises above the inner one by 0.04 m, and the angle of inclination of the lower plane of the knives to the horizontal is 3°.