RU2817390C1 - Mechanism for attachment of rolling wheel to sowing machine - Google Patents

Abstract

FIELD: agriculture; machine building.

SUBSTANCE: invention is intended to ensure packing of sown rows and can be used on sowing machines of any design. Rolling wheel to sowing machine attachment mechanism comprises: rolling wheel 2 stilt 1, arranged on horizontal axis 3 in hub fixed on gusset plate, rolling wheel 2, spring 9 of adjustable stiffness, bracket 7. Gusset plate is attached to bracket 7 by means of vertical hinge 6, and stilt 1 of rolling wheel 2 protrudes beyond its attachment to horizontal axis 3 and has flat horizontal foot 8 at the end of projection. Pressing spring 9 is arranged in cantilever on tightening pin 15. At that, between horizontal foot 8 and pressing spring 9 there is clamping tab 10 with slots fixing its location, overlapping by its plane the flat horizontal foot 8 of stilt 1 of rolling wheel 2, as well as the end part of the gusset plate, and entering the gusset plate with slots. On flat horizontal foot 8 of stilt 1 of rolling wheel 2 with an offset to one of its sides there is a hole for attachment of tightening pin 15 of pressing spring 9. On clamping tab 10 there is a hole for tightening pin 15 of pressing spring 9. Above the hole for pin 15 of pressing spring 9 there is a branch pipe.

EFFECT: use of the invention will make it possible to increase the quality of soil compaction and accuracy of the wheel guiding along the sowing line.

4 cl, 4 dwg

Description

The invention relates to the working parts of seeders, is intended to ensure compaction of sown rows and can be used on seeders of any design.

A known mechanism for attaching a press wheel to a seeder contains a press wheel stand mounted on a rotation axis located in the hub, a press wheel, a preload spring, and a bracket with a gusset (RU 179958, 05/29/2018). The disadvantage of this mechanism for fastening the press wheel is that it can only be used with the proposed design of wide-cut seeders.

The closest in its technical essence is the mechanism for attaching the press wheel to the seeder, containing a press wheel stand mounted on a rotation axis located in the hub, a press wheel, a preload spring, and a bracket with a gusset (RU 2743996, 03/01/2021).

The disadvantage of the design of this mechanism is the small range of changes in the force of the wheel pressure on the soil, since adjustment involves only three of its positions, as well as the complexity of manufacturing its stand. All this affects both the quality of seed placement in sowing lines and the reliability of its operation.

The problem solved by the present invention is to improve the quality of sowing due to the efficiency of compaction.

The technical essence is to improve the quality of soil compaction by the pressing wheel due to finer adjustment of the pressure of the wheel on the soil and the accuracy of the wheel guiding along the sowing line.

This problem is solved by the fact that in the mechanism for attaching the press wheel to the seeder, containing a press wheel stand located on a horizontal axis in a hub mounted on a gusset, a press wheel, a preload spring of adjustable stiffness, a bracket, the gusset is attached to the bracket by means of a vertical hinge, the press stand the end of the wheel protrudes beyond the limits of its fastening on the horizontal axis and has a flat heel at the end of the protrusion, the pressing spring is cantilevered on a pin, between the flat heel of the press wheel stand and the pressing spring there is a presser foot with grooves fixing its location, overlapping with its plane the flat heel of the press wheel stand wheels, as well as the end part of the gusset and the grooves entering the gusset. On the flat heel of the press wheel stand, offset to one of its sides, there is a hole for attaching the tension pin of the preload spring. There is a hole on the presser foot for the tension pin of the tension spring, and a pipe is placed above the hole.

In fig. 1 - mechanism for attaching the press wheel to the seeder, view from the left side.

In fig. 2 - mechanism for attaching the press wheel to the seeder, view from the right side.

In fig. 3 - attachment point for mechanism parts.

In fig. 4 - press wheel stand.

The mechanism for attaching the press wheel to the sowing section consists of a stand 1, a press wheel 2, mounted on a horizontal axis 3, located in a hub 4 mounted on a gusset 5. The gusset 5 is mounted on a bracket 7, made in the form of an I-beam, by means of a vertical hinge 6. The post 1 of the press wheel 2 protrudes at its end beyond the limits of its fastening on the horizontal axis 3 and has a flat heel 8 at the end of the protrusion. On the flat heel 8, a preload spring 9 is cantilevered, with the possibility of changing its rigidity. Between the preload spring 9 and the flat heel 8 of the post 1 of the pressing wheel 2, a presser foot 10 is installed, which with its plane covers the flat heel 8 of the rack 1 and the end part of the gusset 5, fixing its location with grooves 11 and 12, the protrusions included in them are located on the end surface of the gusset. The mechanism for fastening the press wheel to the sowing section is secured by a pressure plate 13, a bracket 7 using tightening bolts 14. The stiffness of the pressing spring is adjusted by a tightening pin 15 with a washer 16 and a nut 17.

On the flat heel 8 of the stand 1 of the press wheel 2, offset to one of its sides, there is a hole 18 for attaching the tie rod 15 of the pressing spring 9. On the presser foot 10 there is a hole 19 for the tie rod 15 of the pressing spring 9. Hole 19 is edged with a pipe 20 to keep the pressing spring from moving along the presser foot 10.

The mechanism for fastening the press wheel of the seeder works as follows. When the sowing unit is operating, its section (not shown in the figure) presses with its weight on the bracket 7, which in turn, through the vertical hinge 6 with the gusset 5, transmits pressure through the presser foot 10 to the stand 1 with the wheel 2. The presser foot 10 in order to prevent displacement is fixed by grooves 11 and 12 on the protrusions of the end part (not shown in the figure) of the gusset 5 rigidly connected to the bracket with a vertical hinge 6. The pressure exerted by the pressing spring 9 on the rack 1 of the wheel 2 is regulated by screwing the nut 17 onto the stud 15. The pressing spring 9, in the event of a collision of the wheel 2 with a solid area of soil, it is compressed and the stand 1 rotates through a certain angle on the horizontal axis 3 located in the hub 4, and then returns back to its original position. Return to the working position in the event of a wheel hitting a lump of soil occurs in the vertical hinge 6 automatically due to the tendency of the press wheel to move with less resistance. A narrow (25 mm) press wheel 2, moving along the seed furrow, creates tight contact between the seeds and the seed bed, and compacts the small layer of soil located on top of the seeds. Subsequently, the standard tools of the seeder (not shown in the figure) are included in the work, for example, spring harrows collapse the edges of the formed rows and sprinkle them with drier and looser soil, and then, if necessary (and if available on the seeder), either targeted rollers or support-press wheels and “close” the sown rows. If the seeder does not have the above standard tools, it is advisable to install a wider press wheel, for example, 50 mm, especially when sowing on ripe and waterlogged soils; it will simultaneously cover the furrow with soil while compacting the seeds.

The press wheel is designed for installation on seeders and sowing complexes to ensure better compaction of sown rows. Can be used both with standard coulters and with anchor coulters. Each pressing wheel has an individual suspension and a rotating mechanism, which ensure accurate copying of the field microrelief and wheel travel along the row, which ensures high-quality compacting even when the wheel is significantly removed from the coulter.

Claims (4)

1. A mechanism for attaching the press wheel to the seeder, containing a press wheel stand located on a horizontal axis in a hub mounted on a gusset, a press wheel, a preload spring of adjustable stiffness, a bracket, characterized in that the gusset is attached to the bracket by means of a vertical hinge, and the press stand the end of the wheel protrudes beyond the limits of its fastening on the horizontal axis and has a flat heel at the end of the protrusion, while the pressing spring is placed in a cantilever on the tie rod, and between the flat heel of the press wheel stand and the pressing spring there is a presser foot with grooves fixing its location, covering with its plane the flat heel of the press wheel stand, as well as the end part of the gusset, and the grooves that fit into the gusset. 2. The mechanism for attaching the press wheel to the seeder according to claim 1, characterized in that on the flat heel of the press wheel stand, offset to one of its sides, there is a hole for attaching the tension pin of the preload spring. 3. The mechanism for attaching the press wheel to the seeder according to claim 1, characterized in that the presser foot has a hole for the tension pin of the preload spring. 4. Mechanism for attaching the press wheel to the seeder according to paragraphs. 1, 3, characterized in that a pipe is placed on the presser foot above the hole for the tension pin of the preload spring.