RU224714U1 - WORKING BODY OF A SOIL TILLAGE MILL 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 (steeply inclined) axis of rotation. The technical result of the utility model is to reduce the energy intensity of the work. The technical result is achieved due to the fact that the knives have a serrated sharpening of the blade containing alternating grooves in the form of semi-ellipses of various widths with sharp edges along the contour and at intersections. The working body of a tillage cutter with a vertical axis of rotation, containing a stand and two horizontal pruning knives with a curved blade profile in a top view, welded on the outer side of the stand at a distance of 6...7 cm from each other, inclined to the horizon at an angle of 3...4° with an edge , moved forward in the direction of rotation by 2 cm, and the knives have a serrated sharpening of the blade containing alternating grooves in the form of semi-ellipses of various widths with sharp edges along the contour and at intersections.

Description

The utility model relates to the field of agricultural engineering, in particular to soil cultivating cutters with a vertical (steeply inclined) axis of rotation.

The working body of a tillage cutter with a vertical axis of rotation is known [RU patent No. 171854, IPC class. A01B 33/10, 2017], containing a stand made in the form of a cylinder and a truncated cone with two cutting blades located in front of the stand in the direction of travel. This technical solution has disadvantages:

1. large thickness of the stand;

2. absence of a cutting edge on the working body stand;

3. limited functional ability (area of application - surface tillage).

This leads to additional energy costs for tillage.

The closest analogue to the claimed one, adopted as a prototype, is the working body of a tillage cutter with a vertical axis of rotation [RU patent No. 202877, IPC class. A01B 33/02, 2021], containing a stand and two horizontal trimming knives with a curved blade profile in the top view, welded on the outside of the stand at a distance of 6...7 cm from each other, inclined to the horizon at an angle of 3...4° with an edge, moved forward in the direction of rotation by 2 cm.

The disadvantage of the prototype is the high energy intensity when cultivating soil containing rhizomes and remains of weed stems and coarse precursors.

The technical result of the utility model is to reduce the energy intensity of the work.

The technical result is achieved due to the fact that the knives have a serrated sharpening of the blade containing alternating grooves in the form of semi-ellipses of various widths with sharp edges along the contour and at intersections.

This set of essential features ensures that the inventive working body of a tillage cutter with a vertical axis of rotation has new properties that differ from the prototype.

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

In fig. Figure 1 shows a diagram of the working body of a tillage cutter with a vertical axis of rotation, side view;

in fig. 2 - the same, top view;

in fig. 3 - extension element in Fig. 2.

The working body of a tillage cutter with a vertical axis of rotation, containing a stand 1 (Fig. 1), and two horizontal pruning knives 3 with a curved profile of the blade 4 in the top view (Fig. 2), welded on the outside of the stand at a distance of 6...7 cm each from each other, inclined to the horizon at an angle of 3...4° with the tip moved forward along the direction of rotation by 2 cm, and the knives 3 have a serrated sharpening of the blade 4 containing alternating grooves in the form of semi-ellipses of various widths with sharp edges along the contour and at the intersections ( Fig. 3). Two holes 2 are used to attach the knife to the rotor.

The working body of the tillage cutter works as follows.

When the working body moves in a plane-parallel motion, the cutting blades and stand enter the soil to a given tillage depth and intensively crush it. Due to the fact that the cutting blades are moved forward in relation to the stand, they begin to crumble the soil first, decompacting it from the outside of the stand, which crushes the already loosened soil. The serrated form of sharpening the blade of knives 3, containing alternating grooves in the form of semi-ellipses of various widths with sharp edges along the contour and at intersections (Fig. 3), allows you to effectively capture and cut with less energy, compared to the smooth sharpening of the prototype, of rhizomes and the remains of stems weeds and rough stem predecessors of different diameters. Thus, the stated technical result is achieved.

Information sources:

1. RU patent No. 171854, IPC class. A01B 33/10, 2017.

2. RU patent No. 202877, IPC class. A01B 02/33, 2021.

Claims (1)

The working body of a tillage cutter with a vertical axis of rotation, containing a stand and two horizontal pruning knives with a curved blade profile in a top view, welded on the outer side of the stand at a distance of 6...7 cm from each other, inclined to the horizon at an angle of 3...4° with an edge , extended forward along the direction of rotation by 2 cm, characterized in that the knives have a serrated sharpening of the blade containing alternating grooves in the form of semi-ellipses of various widths with sharp edges along the contour and at intersections.