RU2557165C1 - Hinged tandem-disc harrow - Google Patents

Abstract

FIELD: agriculture.

SUBSTANCE: harrow comprises a frame with brackets for mounting, the front and rear beams with disc sections. The disc sections are mounted at an angle to each other with the ability to vary the angle of attack. The disc sections have sections of spherical half-discs fixed to the shaft flanges with bolts and nuts, forming a spherical gear working disc. The disc section of the front beam is driven by the power take-off shaft (PTO shaft) of the power unit through the driveline, a gear mounted on the left end of the front beam to the direction of travel, and a gear coupling. The frame is made of two parts pivotally interconnected with the ability of rotation of the rear frame part relative to the front frame part using the hydraulic cylinder of double-action. The hydraulic cylinder is mounted on the front frame part. On the rear beam between the spherical working bodies the scrapers are mounted.

EFFECT: improvement of manoeuvrability of the unit with a harrow.

3 cl, 5 dwg

Description

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

Known heavy rotary harrow BTR-ZA (heavy rotary harrow BTR-ZA, passport, Birobidzhan, 1997), is intended for surface loosening of compacted soils, cutting weeds, crushing crop residues of large-stem crops, cutting of cuttings and clumps after plowing cultivating the soil instead of plowing the chill. The harrow consists of a frame on which are mounted two disk sections, clamshells, a mechanism for leveling the frame, transport wheels.

The working bodies of the harrow are half-disks, which are installed on two disks welded to the shaft in two pieces, forming a spherical gear working disk. The main disadvantages of the BTR-ZA harrow are:

1. The inability to use the harrow for primary tillage due to insufficient depth of cultivation.

2. Lack of maneuverability of the unit with a trailed harrow.

The rotary heavy harrow is also known (see patent RU No. 2370927, IPC A01 B 21/08, published October 27, 2009, Bull. No. 30), designed for surface loosening of compacted soils, cutting weeds, crushing crop residues of large-stalked crops, butchering layers and blocks after plowing, cultivating the soil instead of plowing the fallow. 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. The inability to use the harrow for primary tillage due to insufficient depth of cultivation.

2. Lack of maneuverability of the unit with a trailed harrow.

The purpose of the invention:

1. Use two-track disc harrow for primary tillage.

2. To improve the maneuverability of the unit with a double-track disc harrow.

This goal is achieved by the fact that the disk section of the front beam is driven by a power take-off shaft (PTO) through a cardan drive, a gearbox mounted on the left end of the front beam in the direction of travel, and a gear coupling, while the frame is made of two parts pivotally connected with each other with the possibility of turning the rear of the frame relative to the front of the frame using a double-acting hydraulic cylinder mounted on the front of the frame, with scrapers mounted on the rear beam between the spherical work by organs.

The cavities of the power hydraulic cylinder for raising and lowering the hitch of the power tool and the hydraulic cylinder for raising and lowering the rear of the frame of the harrow are interconnected and are fed from the general hydraulic system of the power tool.

On the disk section of the front beam between the spherical toothed working disks, scrapers can be installed.

Thus, the claimed disc harrow double-track mounted meets the criterion of "Novelty."

Signs that distinguish the claimed technical solution from the prototype, in other technical solutions of 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 two-track disc harrow mounted on an energy tool, a top view; in Fig.2 - double-disc harrow, working position, left view; in FIG. 3 - double-track disc harrow, transport position, left view; in FIG. 4 - disk section of the front beam, side view; in FIG. 5 - section of the disk rear beam, side view.

The double-track mounted disc harrow (Fig. 1, Fig. 2, Fig. 3) contains a frame 1 with brackets 2 for hanging, a front 3 and a rear 4 beams with disk sections 5 and 6, mounted at an angle to each other with the possibility of changing the angle of attack , mounted on the flanges 7 (Fig. 4, Fig. 5) of the shaft 8 using bolts 9 and nuts 10 of the sections of the spherical half-disks 11, forming a spherical gear working disk 12, as well as scraper 13 (Fig. 5). The disk section 5 of the front beam 3 (Fig. 4) has a drive from the power take-off shaft (PTO) of the power tool 15 (Fig. 1) through a cardan gear 16, a gearbox 17 mounted on the left end of the front beam 3 in the direction of travel, and a gear clutch 18 (Fig. 4), while the frame 1 is made of two parts pivotally interconnected to rotate the rear 19 of the frame 1 relative to the front 20 of the frame 1 using the hydraulic cylinder 21 of double-acting (Fig. 2, Fig. 3), mounted on the front 20 of the frame 1, with scrapers 13 mounted on the rear beam Do spherical working bodies.

The cavities of the power hydraulic cylinder 22 of raising and lowering the hinge plate 23 of the power tool 15 and the hydraulic cylinder 21 of raising and lowering the rear 19 part of the harrow frame 1 (Fig. 1) are interconnected and are fed from the general hydraulic system 24 of the power tool.

On the disk section 5 of the front beam 3 (Fig. 4) between the spherical gear working disks 12 can be installed scraper 13.

During operation of the unit, when the harrow is connected to the hinge plate 23 of the power tool 15 using the brackets 2 and frame 1 (Fig. 1), the disk section 5 of the front beam 3, which is driven by the power take-off shaft (PTO) of the power tool 15 through a cardan gear 16, gearbox 17 and the gear coupling 18 (Fig. 4) will be forced to rotate and the spherical gear working disks 12 formed by sections of spherical half-disks 11, mounted on the flanges 7 of the shaft 8 with bolts 9 and nuts 10, will be buried, wrapping the soil layer.

The disk section 6 of the rear beam 4 (Fig. 5), passing along a plowed field after the disk section 5 of the front beam 3, is even deeper into the soil, destroying the ridges formed at the bottom of the furrow after the passage of the disk section 5 of the front beam 3.

Harrow deepening from the soil is carried out by extending the stem of the power hydraulic cylinder 22 of the energy means 15 (Fig. 1).

Since the cavity of the power hydraulic cylinder 22 for raising and lowering the hinge plate 23 of the power tool 15 and the hydraulic cylinder 21 for raising and lowering the rear 19 of the frame 1 of the harrow are interconnected and powered from the common hydraulic system 24, the rod of the hydraulic cylinder 21 (Fig. 3) retracts and raises the rear part 19 frame 1 around the front 20 of the frame 1, reducing the departure of the mounted harrow in the transport position.

Lowering the harrow to the working position is carried out in the reverse order (Fig. 2).

Scrapers 13 mounted on the rear beam 4 between the spherical toothed working disks 12 (Fig. 5) prevent clogging of the disk section 6 of the rear beam 4 with earth.

Since the disk section 5 of the front beam 3 rotates forcibly (Fig. 4), the installation of scrapers 13 is optional due to the fact that the disk section 5 of the front beam 3 self-cleans when forced rotation.

Due to the fact that the disk section 5 of the front beam 3 is driven by a power take-off shaft (PTO) of the energy source 15, it allows increasing the depth of tillage and using a double-track disc harrow for main tillage.

The implementation of the frame 1 in two parts, pivotally interconnected to rotate the rear 19 part of the frame 1 relative to the front 20 part of the frame 1 using a double-acting hydraulic cylinder 21 mounted on the front 20 of the frame, allows to reduce the overhang of the harrow in the transport position and improve the maneuverability of the unit with a double-track mounted mounted harrow.

Claims (3)

1. Two-track mounted disc harrow containing a frame with hinge brackets, front and rear beams with disc sections mounted at an angle to each other with the possibility of changing the angle of attack, with spherical semi-disks forming spherical bolts and nuts mounted on the flanges of the shaft a gear working disk, as well as a scraper, characterized in that the disk section of the front beam is driven by a power take-off shaft (PTO) through a cardan gear, a gearbox mounted on the left end of the front ball ki in the direction of travel, and a gear coupling, while the frame is made of two parts, pivotally interconnected to rotate the rear of the frame relative to the front of the frame using a double-acting hydraulic cylinder mounted on the front of the frame, with scrapers mounted on the rear beam between spherical working bodies. 2. The double-track mounted disc harrow according to claim 1, characterized in that the cavities of the power hydraulic cylinder for raising and lowering the power tool hitch and the hydraulic cylinder for raising and lowering the rear of the frame harrow are interconnected and are fed from the general hydraulic system of the power tool. 3. Two-track mounted disc harrow according to claim 1, characterized in that scrapers can be mounted on the disk section of the front beam between the spherical toothed working disks.

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