RU2618140C1 - Disc double-action mounted harrow - Google Patents

Abstract

FIELD: agriculture.

SUBSTANCE: disc double-action mounted harrow contains the hitch with two brackets and a rack. Front and rear disc sections are mounted on the frame. Spherical half-discs, forming spherical working discs, are fixed by means of bolts and nuts on the shaft flanges of the disc sections. A cylindrical gearbox forcibly drives the front and the rear disc sections from the power shaft (PTO) of the tractor via the driveline. The front and the rear disc sections are mounted on the frame so that their axes are parallel to each other. The spherical working discs of the rear disc section enter without touch into the space between the spherical working discs of the front disc section. The cylindrical gearbox has two output shafts to drive the front and the rear disc sections ensuring the rotation of the front and the rear disc sections in opposite directions.

EFFECT: improved quality of the tillage, cleaning spherical working discs from dirt, the maneuverability of the unit with a disc double-action mounted harrow.

3 cl, 4 dwg

Description

The invention relates to agricultural machinery for two-track disc harrows for processing heavy soils.

Known heavy rotary harrow according to patent RU No. 2370927, IPC АВВ 21/08, publ. 10/27/2009, bull. No. 30, designed for surface loosening of compacted soils, cutting weeds, crushing crop residues of large-stalked crops, cutting of cultivated beds and boulders after plowing, tillage instead of plowing the winter.

The harrow consists of a frame on which two disk sections are mounted, a frame leveling mechanism, and transport wheels.

The working bodies of the harrow are half-disks, the spherical surface of which has a ledge to form in the central part of the spherical disk from the convex side of the recess to the size of the flange to which they are attached, forming a spherical gear working disk.

The main disadvantages of heavy rotary harrows according to patent RU No. 2370927 are:

1. Clogging of the space between the spherical disks of the earth and crop residues.

2. Insufficient quality of cutting the primary plowing layer, raised by shrub-bog plows, as well as cutting of blocky plowing.

3. The lack of maneuverability of the unit with a trailed harrow.

Known double-track mounted disc harrow according to patent RU No. 2557165, IPC АВВ 21/08, is intended for primary tillage, as well as for surface loosening of compacted soils, cutting of cuttings and blocks after plowing.

The harrow consists of a frame with brackets for hanging, front and rear beams with disk sections mounted at an angle to each other with the possibility of changing the angle of attack, with sections of spherical half-disks that form a spherical gear working disk fixed on the flanges of the shaft with bolts and nuts, and scrapers.

The disk section of the front beam is driven by a power take-off shaft (PTO) of the power means through a cardan drive, a gearbox and a gear clutch.

The main disadvantages of the harrow disk double-track mounted according to the patent RU No. 2557165 are:

1. Clogging of the space between the spherical disks with the crop residues of the rear section of the rear section.

2. Inadequate quality of cutting the primary plowing layer raised by shrub-bog plows, as well as cutting blocky plowing.

3. The lack of maneuverability of the unit with the harrow during operation.

The purpose of the invention:

1. To improve the quality of cleaning spherical working disks from dirt and crop residues.

2. To improve the quality of the cut layer of the primary plowing raised by shrub-bog plows, as well as the cutting of blocky plowing.

3. To improve the maneuverability of the unit with a double-track mounted mounted harrow.

This goal is achieved by the fact that the front and rear disk sections are mounted on the frame so that their axes are parallel to each other, and the spherical working disks of the rear disk section enter without touching the space between the spherical working disks of the front disk section. In this case, the cylindrical gearbox has two output shafts for driving the front and rear disk sections, providing rotation of the front and rear disk sections in opposite directions.

The hitch is made of a pipe, for example, of square cross-section, at the ends of which are welded from the side of the frame: on one end there is a sleeve for hinging the axis of the frame with the hinge, and on the other end there are two eyes with coaxial holes for connecting the frame with the hinge using a lanyard ( screw with two heads and a coupling nut with a right and left thread).

The hinge post is pivotally connected to the frame using an adjustable rod, while the braces are welded on the sides of the rack.

Thus, the inventive double-track mounted disc harrow meets the criterion of "novelty."

Signs that distinguish the claimed technical solution from the prototype, in other solutions in this technical field are not identified, which allows us to conclude that the inventive double-track mounted disc harrow meets the criterion of "significant differences".

In FIG. 1 shows a double-track mounted mounted harrow, top view; in FIG. 2. - view A of FIG. one; in FIG. 3 is a section BB of FIG. 2; in FIG. 4 is a general view of a hitch with a harrow frame, rear view, in a perspective view.

The double-track mounted disc harrow (Fig. 1 and Fig. 2) contains a hinge 1 with two brackets 2 and a rack 3, a frame 4 with front sections 5 and 6 rear mounted on it, with disk sections mounted on the flanges 7 of the shaft 8, disk sections 5 and 6 (Fig. 3) using bolts 9 and nuts 10 with spherical half-disks 11, forming a spherical working disk 12, a cylindrical gear 13, driven from the power take-off shaft (PTO) of the tractor through a cardan gear 14.

The front 5 and rear 6 disk sections (Fig. 1) are mounted on the frame 4 so that their axes 15 and 16 are parallel to each other, and the spherical working disks 12 of the rear 6 disk section (Fig. 3) enter without touching the space between the spherical working disks 12 of the front 5 disk sections, while the cylindrical gear 13 has two output shafts 17 and 18 for driving the front 5 and rear 6 disk sections, providing rotation of the front 5 and rear 6 disk sections in opposite directions.

The hitch 1 (Fig. 1) is made of a pipe 19, for example, of square cross-section, at the ends 20 and 21 of which are welded from the side of the frame 4: from one end 20, a sleeve 22 for articulating the axis 23 of the frame 4 with the hinge 1, and from the other end 21 - two eyes 24 with coaxial holes 25 for connecting the frame 4 with the hinge 1 using the lanyard 26 (screw with two heads and a coupling nut with right and left-hand thread).

The rack 3 of the linkage 1 is pivotally connected to the frame 4 by means of an adjustable rod 27, while the braces 28 are welded on the sides of the rack.

During operation of the unit (Fig. 1, Fig. 2), when the harrow is connected to the tractor by means of a linkage 1 with two brackets 2 and a rack 3, from the power take-off shaft (PTO) of which through a cardan gear 14 and a cylindrical gearbox 13 (Fig. 3) having two output shafts 17 and 18, forcibly drives the front 5 and rear 6 disk sections with the disk sections 5 mounted on the flanges 7 of the shaft 8 of the disk sections 5 and with the help of bolts 9 and nuts 10 spherical semi-disks 11, forming spherical working disks 12, which are deepened into the soil by wrapping the layer.

Due to the fact that the front 5 and rear 6 disk sections rotate in opposite directions, when cutting the primary plowing layer raised by shrub-bog plows, they act on the formation from two sides, contributing to the effective destruction of the formation.

When the front 5 and rear 6 disk sections rotate in opposite directions, the spherical working disks 12 self-clean due to the front 5 and rear 6 disk sections being mounted on the frame 4 in such a way that their axes 15 and 16 are parallel to each other (Fig. 1), and spherical working disks 12 of the rear 6 disk section (Fig. 3) enter without touching the space between the spherical working disks 12 of the front 5 disk section.

For ease of articulation of the parts of the hinge 1 (Fig. 4), it is made of a pipe 19, for example, of square cross-section, welded at the ends 20 and 21 from the side of the frame 4: from one end 20, a sleeve 22 for swiveling the axis 23 of the frame 4 with the hinge 1 and from the other end 21, two eyes 24 with coaxial holes 25 for connecting the frame 4 with the hinge 1 using the lanyard 26 (a screw with two heads and a coupling nut with a right and left thread).

To set the angle of attack, change the length of the lanyard 26.

To reduce the load on the hinge connection of the axis 23 of the frame 4 with the sleeve 22, the rack 3 of the linkage 1 is pivotally connected to the frame 4 by means of an adjustable rod 27, which supports the frame 4 at a certain level relative to the linkage 1.

To the rack 3, the hinges 1 on the sides are welded braces 28, which increase the rigidity of the rack 3.

The installation of the disk sections 5 and 6 parallel to each other (Fig. 3) with the penetration without touching the spherical working disks 12 of the rear disk section 6 into the space between the spherical working disks 12 of the front 5 disk section allows improving the quality of cleaning the spherical working disks 12 from sticking dirt and crop residues, and also improve the maneuverability of the unit with a double-track disc harrow.

The installation of a cylindrical gearbox 13 with two output shafts 17 and 18 on the harrow allows both disk sections 5 and 6 to be driven simultaneously, improving the quality of soil treatment.

Claims (3)

1. Two-track mounted disc harrow, containing a hitch with two brackets and a rack, a frame with front and rear disk sections mounted on it, with spherical half-disks mounted on the shaft flanges of the disk sections using bolts and nuts, forming a spherical working disk, a cylindrical gear reducer driven from the power take-off shaft (PTO) of the tractor through a cardan transmission, characterized in that the front and rear disk sections are mounted on the frame so that their axes are parallel to each other, and the spherical workers rear wheels includes a disk section without touching in the working space between the spherical disc drives front section, wherein the cylindrical gear has two output shafts for driving the front and rear sections of the disk, rotation of the front and rear sections of the disk in opposite directions. 2. Two-track mounted disc harrow according to claim 1, characterized in that the hitch is made of a pipe, for example, of square cross-section, at the ends of which are welded from the side of the frame: from one end - a sleeve for swiveling the frame axis with the hinge, and from the other end - two eyes with coaxial holes for connecting the frame with the hinge using a lanyard screw with two heads and a coupling nut with right and left threads. 3. The double-track mounted disc harrow according to claim 1, characterized in that the hitch rack is pivotally connected to the frame using an adjustable rod, while the braces are welded on the sides of the rack.

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