Soil-working device for the agricultural preparation of earth

Abstract

A soil-working device for the agricultural preparation of earth, in particular for the planar cutting of earth, including a main body and cutting elements arranged on the latter, the main body having a carrier face and a sliding face, cutting elements being arranged on the carrier face, and earth being able to slide off over the sliding face. To avoid smearing over a soil when working same, the sliding face adjoins the carrier face at an angle so that the distance of the sliding face from the earth increases away from the carrier face.

Claims

1. A soil-working device for agricultural preparation of earth, including planar cutting of earth, said soil-working device comprising: a main body; and cutting elements arranged on the main body; the main body having a sliding face and a carrier face, the sliding face and the carrier face are adjoined at an adjoining region; the cutting elements being arranged on the carrier face, and earth being able to slide off over the sliding face; in the adjoining region, the sliding face and the carrier face are adjoined at an angle (α) configured so that a distance of the sliding face from the earth is increased in a direction away from the carrier face; and the angle (α) being defined by respective undersurfaces of the sliding face and the carrier face in the adjoining region.

2. The soil-working device according to claim 1, wherein: the distance increases at least in the adjoining region at which the sliding face adjoins the carrier face.

3. The soil-working device according to claim 1, wherein: the distance increases from a joining between the sliding face and the carrier face to an opposite end of the sliding face.

4. The soil-working device according to claim 3, wherein: the distance increases continuously.

5. The soil-working device according to claim 1, wherein: the sliding face adjoins the carrier face, at least in some regions, at an angle of at least 135°.

6. The soil-working device according to claim 1, wherein: the sliding face adjoins the carrier face, at least in less than all regions, at an angle of at least 140°.

7. The soil-working device according to claim 1, wherein: the sliding face adjoins the carrier face, at least in some regions, at an angle of at least 142.5°.

8. The soil-working device according to claim 1, wherein: the carrier face is bent at least in a plurality of sections of the carrier face.

9. The soil-working device according to claim 6, wherein: the carrier face is formed with multiple bent sections.

10. The soil-working device according to claim 1, wherein: one or more cutting elements are arranged on an end of the carrier face.

11. The soil-working device according to claim 1, wherein: the main body is formed from steel.

12. The soil-working device according to claim 1, wherein: the soil-working device is a duckfoot share.

13. The soil-working device according to claim 1, wherein: the angle (α) is less than 180°.

14. The soil-working device according to claim 1, wherein: the angle (α) is no greater than 165°.

15. The soil-working device according to claim 1, wherein: the angle (α) has a range between 135° and 160°.

16. The soil-working device according to claim 1, wherein: in the adjoining region, the sliding face and the carrier face are adjoined at an angle (α) configured so that, in cross-section, an elevation of the sliding face from the earth is increased at least in a longitudinal direction extending away from the carrier face.

Description

(1) Further features, advantages and effects of the invention can be found in the exemplary embodiment presented below. In the drawings to which reference is made:

(2) FIG. 1 shows a view from above of a soil-working device;

(3) FIG. 2 shows a view from the end of the soil-working device according to FIG. 1;

(4) FIG. 3 shows a lower view of the soil-working device according to FIG. 1;

(5) FIG. 4 shows a section along line IV-IV in FIG. 1;

(6) FIG. 5 shows a section along line V-V in FIG. 1;

(7) FIG. 6 shows a section along line VI-VI in FIG. 1;

(8) FIG. 7 shows a perspective diagram of the soil-working device according to FIG. 1;

(9) FIG. 8 shows a further perspective diagram of the soil-working device according to FIG. 1;

(10) FIG. 9 shows a cross-section through a soil-working device according to FIG. 1 along line IV-IV in comparison with the prior art.

(11) A soil-working device 1 according to the invention is shown in FIG. 1. FIG. 2 shows an end view and FIG. 3 shows a lower view of the same soil-working device 1. FIG. 4 to FIG. 6 show sections of the soil-working device 1 along lines IV-IV (FIG. 4), V-V (FIG. 5) and VI-VI (FIG. 6).

(12) As can be seen in particular in FIG. 1 and FIG. 2, the soil-working device 1, which is in the form of a duckfoot share, has an approximately V-shaped main body 2 as viewed from above. Although the main body is V-shaped in the exemplary embodiment, the main body can in principle also assume other shapes, but is preferably designed so as to produce a tip pointing in the cutting direction when viewed from above. In the present exemplary embodiment, this is the V shape which points in the cutting direction.

(13) The main body 2 of the soil-working device 1 comprises multiple regions. The main body 2 is provided in the centre with a sliding face 6, which merges at the rear into a stem-like extension 4. This stem-like extension 4 is used to fasten the soil-working device 1 to a corresponding holder of a towing machine such as a tractor. To this end, the stem-like extension 4 is formed with a fastening hole 5. However, multiple fastening holes can also be provided, like in other variants of a soil-working device 1 according to the invention. It is also possible for another fastening mechanism to be provided to hold a fastening means instead of a fastening hole 5, for example fixing by releasable clamping.

(14) In the end region, the sliding face 6 adjoins a carrier face 7 bearing cutting elements 3. A plurality of cutting elements 3 is provided. The cutting elements 3 are formed from a more wear-resistant material than the main body 2. To this end, the cutting elements 3 can in particular be formed from a hard metal. The cutting elements 3 can also be provided with a coating to increase the wear resistance.

(15) As can be seen in particular in FIG. 4, the sliding face 6 merges into the carrier face 7 so as to produce, in cross-section, a distance—or elevation—which increases towards the stem-like extension 4 from a soil or from a lower part of cut-through earth. This is achieved in that the profile of the sliding face 6, as can be seen in particular in the cross-section according to FIG. 4, is tilted upwards theoretically and also practically. This elevation of the sliding face 6 or a greater tilting, for example at an angle α of approximately 135° to 160°, such angle being shown in FIG. 4 between respective undersurfaces of the sliding face 6 and the carrier face 7 in the adjoining region, results in a corresponding clearance downwards. If an upper layer of earth is then separated, for which reason the soil-working device 1 is designed as a duckfoot share, the soil-working device 1 slides over the lower layer without the sliding face 6 touching this lower, remaining earth layer. This prevents the sliding face 6 dragging along the earth layer which has not been separated by bearing against same and thereby forming an undesirable smeared layer. The cutting elements 3 themselves are positioned approximately at an angle of 25° to 40°, preferably approximately 27.5° to 35°, so that earth can be cut into or through in the usual manner. Like in the prior art, separated earth slides along the sliding face 6, which, in contrast to the prior art, no longer slides along the lower part of the earth.

(16) FIG. 7 and FIG. 8 show perspective diagrams of the soil-working device 1. It can be seen in particular in FIG. 7 that the carrier face 7 has multiple sections 9. In the exemplary embodiment, a variant can be seen in which the sections 91, 93 are bent, with different radii. A flat section 92 is provided between the two bent sections 91, 93. Other designs are also possible. For example, all the sections 9 can be bent. A suitable design depends on the expected forces and the transfer thereof in the interaction between the carrier face 7 and the sliding face 6.

(17) The differences from the prior art are particularly apparent in FIG. 9. Like FIG. 4, FIG. 9 shows a section along line IV-IV. A further crosshatched region is shown, which indicates a profile of the sliding face 6 according to the prior art. As can be seen, the sliding face 6 in this case runs substantially parallel to the soil at a distance 8. The cutting elements 3 are also fastened at the same angle according to the prior art, so that fundamentally similar cutting conditions result. However, the prior art does not take into account possible tilting of the main body 2, which is produced automatically as a result of the fastening to a towing means. Even if this has perfect positioning initially, a certain amount of play can occur over time in use as a result of fastening means loosening, so that the main body 2 ultimately deflects slightly, which can already be sufficient for the sliding face 6 according to the prior art to bear against a lower part of the earth when earth is cut through and thus cause the undesirable smearing effect. However, if a solution according to FIG. 9 is made, a much larger clearance is produced, as can be seen, as a result of which the problem of the smearing effect can be overcome in the long term.

(18) FIGS. 1 to 9 show the soil-working device 1 in the form of a duckfoot share. It is self-evident that the corresponding features can readily be transferred to analogous soil-working devices 1 without affecting the concept of the invention. It is also self-evident that the aforementioned specific features associated with the exemplary embodiment can also be applied entirely generally and separately from further features of the exemplary embodiment.