DE29715888U1 - Ground pressure roller - Google Patents

Description

Kverneiand Accord GmbH & Co. KG, Coesterweg 42, 59494 Soest

"Ground pressure roller"
5

The innovation concerns a soil pressure roller for seed drills and in particular for the arrangement of the individual seed coulters on a narrow strip of soil arranged in the direction of travel. Such an arrangement is advantageous because with such seed drills the soil is not worked or tilled over a large area.

is consolidated, but only a part of the entire arable land, so that work can be carried out with a minimum of processing energy and with a minimum of soil disturbance.

Such soil pressure rollers are already known from practice and these soil pressure rollers are generally intended to break up the soil in order to create a soil climate and soil physical conditions that are favorable for sowing, and in addition to this,

The soil pressure rollers are used to reconsolidate the raised soil in order to create favorable soil conditions for sowing and, in particular, to ensure a good supply of water and air.

A problem with the soil pressure rollers known from practice is that the rollers can become clogged with soil, especially in loamy soils or with soil pressure rollers that do not have this inclination, it is often observed that they do not have optimal soil physical conditions for

create the seeds.

The innovation is based on the task of creating a ground pressure roller that eliminates the disadvantages of known ground pressure rollers and in particular also works in unfavourable ground or surface conditions.

Weather conditions do not cause adhesion and yet still create optimal soil physical conditions.

This task underlying the innovation is solved by the doctrine of the characterizing part.

The contour described in the main claim ensures that the operation of the proposed pressure roller wheel has a reconsolidating and crushing effect on the soil strip that is rolled over. However, this prevents the wheel from

Form adhesions of continents.

Advantageous embodiments of the innovation are explained in the subclaims.

It is particularly advantageous to manufacture the soil pressure roller from a flexible material in order to achieve improved resistance to the roller sticking to soil particles.

The pressure roller achieves a very good effect when the support surface has a symmetrical structure when viewed from above, which also simplifies the production of the proposed pressure roller.

It is advantageous in the interests of simple manufacture of the proposed pressure roller to manufacture it from at least two components that can be made from different materials, whereby, for example, a core can be made from a lower-quality material and an outer element from

higher quality material. It is therefore possible, for example, to manufacture the core from inexpensive recycled material.

A particularly simple production is achieved when

Two half-shell-shaped outer elements are attached to a core.

be arranged, whereby in this design the core can be made very large and the two outer elements form around the core like a support, whereby this is particularly advantageous if a lower-quality material is used for the core, which in this design ultimately

can take up a large part of the total material requirement for the ground pressure roller.

If the core is made of lighter material than the outer elements, this will additionally reduce the weight of the

Pressure roller is reduced, which is positive in terms of the energy required for soil cultivation or sowing. A low weight also reduces lifting power and is also advantageous for this reason. 15

In addition, it is advantageous if the shape of both the core and the outer element is such that both elements interlock with each other in order to achieve good stability. This can be made possible, for example, by the outer elements having ribs that point inwards

and the core has correspondingly designed recesses into which the ribs can engage or vice versa.

It is advantageous if the teeth of the pressure roller have a shape that depends on the direction of travel in order to achieve maximum

To achieve the effective effect of the pressure roller.

When using the proposed pressure rollers on a tandem axle, where the pressure rollers are spaced apart and therefore arranged with a gap, a

particularly advantageous use of the proposed wheel.

The following drawings describe an embodiment of the innovation, in which

Fig. 1 shows a ground pressure roller,

Fig. 2 shows an expanded ground pressure roller,

Fig. 3 shows a cut-away ground pressure roller and

Fig. 4 shows another embodiment of the proposed

striking ground pressure roller.

Referring to Fig. 1, a ground pressure roller 1 is shown which has a central opening 2 for receiving the shaft or axle supporting the ground pressure roller 1. In addition, the ground pressure roller 1 has several

Teeth 4, which are arranged one behind the other and form a row of teeth. This row of teeth is arranged in the central area of the support surface 3. At the edge areas of the teeth 4, shoulders 5 are arranged, which are arranged sloping towards the edge areas of the ground pressure roller 1, i.e. the highest

The shoulders are raised in the central area of the support surface 3. In the areas of the shoulders 5 that are assigned to the teeth 4, raised areas 6 are formed in order to, on the one hand, increase the pressure effect of the floor pressure roller 1 and, on the other hand, to prevent soil residues from sticking to the floor.

pressure roller 1 to prevent.

The teeth 4 are slightly inclined in the direction of travel, with the direction of travel indicated by the arrow 7. 25

The support surface 3 can have a symmetrical design when viewed from the front.

Referring to Fig. 2, an exploded view of the ground pressure roller 1 is shown and in this embodiment

The ground pressure roller 1 consists of a core 8 which is covered by two half-shell-like outer elements 9, 10.

In a preferred embodiment, the core 8 can be made of material of lower density or lighter material than the starting

materia!, from which the outer elements 9 and 10 are made.

in order to keep the total weight of the ground pressure roller 1 as low as possible and to be able to use inferior material for the core 8, for example recycled material.
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In order to ensure stability of the ground pressure roller 1, the outer elements 9 and 10 interlock with the core 8 due to the ribs 11 that are protruding on the inside of the outer elements 9, 10. Accordingly, the core 8 has slots or recesses 12 to accommodate the ribs 11.

When the three elements are put together, this formation of the ribs 11 and recess 12 results in a firm and stable connection.

Of course, the pressure roller shown can also be used

poured or sprayed.

Referring to Fig. 3, the ground pressure roller 1 is shown partially cut away, with the rib 11 being cut away, which is connected to the outer element(s) 9, 10.

is dependent on the material of the core 8, whereby the material of the core 8 can be seen in the outer area. On the other cut side, the material of the core can be seen, which extends to the support surface 3 and helps the entire floor pressure roller 1 to behave flexibly.

Overall, it is advantageous to design the floor pressure roller 1 from a flexible material, e.g. polyurethane, whereby the core, as mentioned, can consist of e.g. recycled plastic or other material.

Referring to Fig. 4, it is clear that the teeth can be inclined in the direction of travel in order to facilitate the crushing of clods etc.

Claims (9)

HABBEL & HABBEL " "' dIpiI.-inq. h.-q. habbel PATENT ATTORNEYS DIPL.-INQ. LUTZ HABBEL EUROPEAN PATENT ATTORNEYS PO Box 3429 ♦ 48019 Münster DIPL.-QEOQR. PETER HABBEL TELEPHONE (0251) 535 780 ♦ FAX (0251) 531 996 UNFORCE ACTS; (please specify) W29/20113 Münster, 3 September 1997 Kverneland Accord GmbH & Co. KG ₁ Coesterweg 42,
59494 Soest "Ground pressure roller"
20 Protection claims: 1. Soil pressure roller for seed drills, in particular for installation in a narrow strip of soil arranged in the direction of travel 25 of the individual coulters, characterized by a central A row of teeth (4) arranged in the area of a support surface (3) and flanked on both sides by shoulders (5)
which are designed to slope down towards the edges,
whereby the shoulders (5) in the area of the teeth (4) have elevations (6) 30. 2. Ground pressure roller according to claim 1, characterized by a ground pressure roller (1) consisting at least partially of flexible material. 3. Ground pressure roller according to claim 1, characterized by the symmetrical structure of the support surface (3) when viewed from the front of the support surface (3). 4. Ground pressure roller according to claim 1, characterized by a core (8) on which at least one supporting surface (3) Outer element (9, 10) is arranged. 5. Ground pressure roller according to claim 4, characterized by the core (8) on which two half-shell-shaped outer elements (9, 10) are arranged. 6. Ground pressure roller according to claim 4 or 5, characterized by the core (8) which is made of a material of lower density than the outer element (9, 10). 7. Ground pressure roller according to one of the preceding claims 4 to 6, characterized by the core (8) and the outer element (9, 10), one of these structural elements having a raised portion (11) and the other of these structural elements having a correspondingly formed recess (12) in favor of a positive connection. fitting of the resulting ground pressure roller (1). 8. Ground pressure roller according to claim 4, characterized by the teeth (4) which have a design dependent on the running direction. 9. Ground pressure roller according to one of the preceding claims, characterized by the arrangement of the same on a tandem axle, wherein the respective pressure rollers (1) are spaced apart from are arranged one above the other.