RU183816U1 - WORKING BODY OF THE HARROW DISC - Google Patents

Abstract

The device relates to the working bodies of tillage machines, in particular to the working bodies of disk harrows.

The technical result consists in improving the mixing of the soil and increasing the rigidity of the working body of the disk harrow.

The working body of the disk harrow, which is a spherical disk with cutting edges and a central mounting hole on the surface of the spherical disk, has local deformation in the form of direct local convexities, at which their peaks are made on the concave side of the spherical disk, and they are mirrored on the convex side of the spherical disk their concavity.

Description

The device relates to the working bodies of tillage machines, in particular to the working bodies of disk harrows.

Known working body of the harrow (patent US 672536 A, IPC A01B 23/06, published 04/23/1901), having a plate-shaped shape in which the hub with the landing hole is below the working edges, while part of the outer surface is convex and part concave. On the inner (concave) surface of the device, faces are made in the form of local convexities, while the opposite (external) side of the device remains smooth.

A disadvantage of the known working body of the harrow is poor mixing of the soil, due to the fact that one of the sides of the device is smooth.

A well-known spherical sector disk (patent RU 68224, published November 27, 2007) having a cutting edge with cutouts in the form of semicircles, made in the form of segments having sharpening on the convex surface of the disk, a central circular hole, interchangeable sectors that are fastened with rivets to drive and made of quality structural steel.

A disadvantage of the known spherical sector disk is poor soil mixing and insufficient strength and rigidity of the structure.

A spherical disk of a tillage implement is known (patent RU 78621, published 10.12.2008) made of a metal sheet and provided with cutouts, and the disk itself is additionally equipped with slots placed radially and / or at an angle to the radius of the disk from the disk’s sphere, with the total area of the slots makes up from 10 to 30% of the disk area, and the gaps between the slots form a system of spokes, the width of which is from 0.7 to 1.5 of the average value of the width of the slot.

A disadvantage of the known disk of a spherical tillage implement is the insufficient strength and rigidity of the structure.

The closest in nature and taken as a prototype is a spherical disk (patent RU 50360, published January 20, 2006) having a smooth cutting edge, a flat bottom, a central mounting hole, sharpening of the cutting edge of the blade from the convex side, the angle formed by the plane of rotation of the disk and sharpening within 48 ... 52 °, with the ratio of the radius of curvature of the disk to its diameter 1.2 ÷ 1.5, made of high-quality structural steel.

The disadvantages of the prototype are poor mixing of the soil and lack of strength and rigidity.

The technical result consists in improving the mixing of the soil and increasing the rigidity of the working body of the disk harrow.

A technical result is achieved by the fact that the working body of the disk harrow, including a spherical disk with cutting edges and a central mounting hole, has local deformation on the surface of the spherical disk in the form of direct local convexities, at which their apices are made on the concave side of the disk and with a convex the sides of the spherical disk are mirrored by concavities.

In FIG. 1 shows the working body of a disk harrow.

In FIG. 2 shows a section AA of the working body of a disk harrow.

The working body of the disk harrow, including a spherical disk 1 with cutting edges 2. The cutting edges 2 have a chamfer sharpening 3 from the convex side 8 of the disk of spherical 1. In the central part of the disk of spherical 1 there is a mounting hole 4 for installing and fixing the device to the harrow. On the surface of the disk of spherical 1, local deformation 5 is made in the form of direct local convexities, in which on the concave side 7 of the disk of spherical 1, vertices of 6 convexes are made, and on the convex side 8 of the disk of spherical 1, their concavities 9 are mirrored to them.

The working body of the disk harrow works as follows. Several harrows of the disk harrow are mounted on the harrow. By dragging the harrow over the soil surface, the working bodies of the disc harrow, under the action of gravity, cut into the soil to a depth determined by the weight of the harrow, which can be changed by ballast (not shown in Fig.) And rotate. At the same time, the cutting edges 2 cut the soil layer and plant debris, perceiving resistances and loads when meeting with solid inclusions. The soil layer due to the rotation of the working body of the disk harrow rises, falling crumbles, partially turns and is laid aside.

Due to the fact that the direct local convexities of local deformation 5 are made in such a way that the convex peaks 6 are located on the concave side 7 of the disk of spherical 1, and concavities 9 are mirrored by them on the convex side 8 of the disk of spherical 1, soil mixing is improved.

Due to the fact that the spherical disk is made integral, its high strength is ensured, and local deformation at which the vertices of direct local convexities are made on the concave side of the spherical disk, and their concavities are located on the convex side of the spherical disk, it increases its rigidity.

BIBLIOGRAPHY

1. Patent US 672536 A, IPC A01B 23/06. Posted on 04/23/1901

2. Patent RU 68224. IPC: А01В 21/08. Sector spherical disk. Published: November 27, 2007

3. Patent RU 78621. IPC: А01В 7/08. Disc spherical tillage implement. Published: December 10, 2008

4. Patent RU 50360. IPC: А01В 7/00. The disk is spherical. Published: January 20, 2006

Claims (1)

The working body of the disk harrow, including a spherical disk with cutting edges and a central mounting hole, characterized in that local deformation is made on the surface of the spherical disk in the form of direct local convexities, at which their peaks are made on the concave side of the spherical disk and spherical on the convex side concavities are mirrored by them.

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