WO2021047967A1

WO2021047967A1 - Seeding device

Info

Publication number: WO2021047967A1
Application number: PCT/EP2020/074398
Authority: WO
Inventors: Roy Stier; Christian Henke
Original assignee: Amazonen-Werke H. Dreyer Gmbh & Co. Kg
Priority date: 2019-09-10
Filing date: 2020-09-02
Publication date: 2021-03-18
Also published as: DE102019124220A1

Abstract

The invention relates to a seeding device (10, 10a, 10b) for a sowing machine, comprising a coulter support (12, 12a, 12b), a sowing coulter (16, 16a, 16b) which is secured to the coulter support (12, 12a, 12b) and is designed to deposit seeds onto a usable agricultural area, and a depth guide roller (14, 14a, 14b) which is secured to the coulter support (12, 12a, 12b) and specifies the depositing depth (z1, z2) of the seeds to be deposited by the sowing coulter (16, 16a, 16b), wherein the depth guide roller (14, 14a, 14b) is positioned in front of the sowing coulter (16, 16a, 16b) in the travel direction (F).

Description

Sowing device

The invention relates to a sowing device according to the preamble of claim 1 and a seed drill according to the preamble of claim 9.

Agricultural seed drills usually have a plurality of sowing devices, each sowing device having a sowing coulter for the seed placement and a depth guide roller for maintaining an intended placement depth for the seed. In this context, it has hitherto been customary to position the depth control roller behind the coulter in the direction of travel.

Furthermore, from the document DE 197 48 837 A1 a disc coulter is known in which the depth guide element is arranged laterally next to the coulter. The lateral depth guide tends to blockages in wet conditions. Trailing depth guides tend to unintentionally strong soil compaction, especially when the coulter pressure is high.

The object on which the invention is based is thus to reduce the tendency towards clogging and the risk of excessive soil compaction when placing seeds on an agricultural area.

The object is achieved by a sowing device of the type mentioned at the outset, the depth guide roller of the sowing device according to the invention being positioned in front of the sowing coulter in the direction of travel.

The invention makes use of the knowledge that the leading depth control roller results in a new depth control concept in which excessive soil compaction, especially with high coulter pressure, is avoided without the sowing device becoming more clogged. The leading depth control roller also ensures a reconsolidation or recompaction of the seedbed before the seed is placed. This is particularly advantageous if the seed drill does not have an integrated roller. A homogeneously reconsolidated seed horizon can be created by the leading depth control roller. In addition, the leading depth control roller results in an additional leveling of the seedbed. Even in wet conditions, conditions with a lot of organic material and / or with small coulter spacings, for example at coulter spacings of 125 mm, the sowing device has an extremely low tendency to clog. The leading depth control roller also reduces earth movements and the earth throw.

If the sowing device has a coulter disk, the advanced reconsolidation increases the drive of the coulter disk, since it then runs in a more homogeneous and more predictable soil. This is particularly advantageous for flat shelves under specific conditions. A coulter disk for opening the seed furrow during the sowing process can be used, for example, when the demands on the seed furrow increase, earth movement through the seed coulter is to be minimized and / or the closure is to be reduced. In combination with disc coulters, coulter discs allow more targeted placement, as the coulter discs cut open the furrow.

The sowing coulter can for example be designed as a grain sowing coulter. Furthermore, the coulter can be used as a single disc coulter, double disc coulter or

Be formed tine coulter. The coulter can be designed for plow and mulch sowing or direct sowing conditions. In a particularly preferred embodiment of the sowing device, only one coulter and / or only one depth control roller is attached to the coulter carrier. The depth control roller ensures that a set placement depth is maintained in relation to the soil surface of the agricultural area.

In a preferred embodiment of the seed drill according to the invention, the coulter support comprises a parallelogram linkage. The coulter and / or the depth control roller are attached to the parallelogram linkage. By changing the state of the parallelogram linkage, the

The height relationship between the coulter and the depth control roller is changed in such a way that a different placement depth is set. The sowing device according to the invention is further developed advantageously in that the parallelogram linkage has an upper link and a lower link. A height difference between the depth control roller and the seed coulter can be adjusted by moving the top link in its longitudinal direction. The top link runs essentially in the horizontal direction, so that the height difference between the depth control roller and the seed coulter can be adjusted via a linear displacement of the top link relative to the lower link in the direction of travel or against the direction of travel. The coulter pressure is preferably adjustable via one or more rubber elements or one or more spring elements, such as one or more spiral springs, on the lower link.

In another preferred embodiment of the sowing device according to the invention, the depth guide roller and the sowing coulter are attached to a carrier part of the coulter carrier which can be pivoted about a pivot axis. The carrier part is preferably articulated on the upper link and / or on the lower link of the parallelogram linkage. The support part is preferably articulated to the upper link and / or the lower link of the parallelogram linkage in such a way that the set placement depth increases with increasing pivoting of the support part. In addition, a sowing device according to the invention is advantageous in which the carrier part, including the depth guide roller and the sowing coulter, can be pivoted via a movement of the upper link, preferably in its longitudinal direction. The movement of the upper link, in particular in its longitudinal direction, is preferably a linear movement. When the upper link moves to pivot the support part including the depth control roller and seed coulter, there is preferably no deflection of the lower link of the parallelogram linkage.

In a further preferred embodiment of the sowing device according to the invention, the pivot axis of the carrier part is at the level of the lower link of the parallelogram linkage. A section of the pivotable support part preferably forms part of the parallelogram linkage. The pivotable support part is preferably via a fastening element, such as for example a screw or a pin attached to the lower link. A pivot bearing is preferably formed by means of the fastening element.

In an alternative embodiment of the sowing device according to the invention, the coulter support is designed as a pivot bracket. In this case, the depth control roller and the coulter are preferably attached to a carrier part which is articulated to a single link of the link bracket. The carrier part together with the depth guide roller and the seed coulter can preferably be pivoted in its longitudinal direction by moving the single link.

The sowing device according to the invention is further advantageously developed in that a furrow and / or pressure roller and / or a harrow element is arranged behind the sowing coulter and / or the depth control roller in the direction of travel. The furrow and / or pressure roller and / or the harrow element is preferably articulated to the pivotable carrier part. The object on which the invention is based is also achieved by a seed drill of the type mentioned at the outset, with one, several or all of the seeding devices of the seed drill according to the invention being designed according to one of the embodiments described above. With regard to the advantages and modifications of the seed drill according to the invention, reference is therefore first made to the advantages and modifications of the seeding device according to the invention.

If several or all of the sowing devices are designed according to one of the embodiments described above, an individual adaptation of the individual sowing coulters to the contour of the soil surface can be implemented. This means that different placement depths can even be implemented in the individual rows.

In a further development of the seed drill according to the invention, the depth guide rollers and the seed coulters of at least two seeding devices arranged next to one another are offset from one another in the longitudinal direction. The offset in the longitudinal direction can be implemented using coulter carriers of different lengths. For example, coulter carriers have different sowing devices handlebars of different lengths, for example lower links and / or upper links.

In another preferred embodiment of the seed drill according to the invention, the coulter carriers of the sowing device are attached to a common cross frame or cross bar. By attaching the coulter carriers of the sowing devices to a common cross frame or cross beam, the sowing devices can be raised and lowered together over the cross frame or the cross beam. This can be implemented, for example, by a pivoting and / or lifting movement on the cross frame or cross beam.

Preferred embodiments of the invention are explained and described in more detail below with reference to the accompanying drawings. Show:

1 shows an embodiment of the sowing device according to the invention in a side view;

FIG. 2 shows the sowing device shown in FIG. 1 after a first placement depth has been set; FIG.

3 shows the sowing device shown in FIG. 1 after setting a second placement depth; 4 shows two sowing devices of a sowing machine according to the invention in a side view;

FIG. 5 shows the sowing devices shown in FIG. 4 after a first placement depth has been set; FIG. and

6 shows the sowing devices shown in FIG. 4 after setting a second placement depth.

1 to 3 show a sowing device 10 for a sowing machine, different placement depths z1, z2 being set in the figures. A corresponding sowing machine usually has several such sowing devices 10. The Sowing devices 10 can be attached, for example, equidistantly spaced to a common transverse frame or a common transverse bar of the seed drill.

The sowing device 10 has a coulter carrier 12 formed from several struts, only one coulter 16, only one depth guide roller 14 and only one furrow roller 28 being attached to the coulter carrier 12. The sowing coulter 16 is designed as a grain sowing coulter, namely as a single-disc sowing coulter. In an alternative embodiment, however, the coulter 16 could also be designed as a double disc coulter or a tine coulter. In particular, the coulter 16 can be designed for plow and mulch sowing or direct sowing conditions. The sowing coulter 16 is set up to deposit seeds on an agricultural area. The depth guide roller 14 is positioned in front of the coulter 16 in the direction of travel F and specifies the placement depth z1, z2 of the seed to be deposited by the coulter 16. The depth control roller 14 is thus a leading depth control roller. The

The furrow roller 28 is arranged behind the seed coulter 16 and behind the depth control roller 14 in the direction of travel F.

The leading depth control roller 14 results in a

Depth control concept, in which the depth control roller 14 is not only used for depth control but also for reconsolidation or recompaction of the

Seedbed before the seeds are placed. In addition, the leading depth control roller 14 ensures that the seedbed is leveled. The construction of the sowing device 10 leads to a lower tendency to clog, in particular in wet conditions, in conditions with a lot of organic material and / or with small coulter spacings.

The coulter carrier 12 of the sowing device 10 comprises a parallelogram linkage 18. The parallelogram linkage 18 has an upper link 20 and a lower link 22 running parallel to the upper link 20. Of the

The difference in height between the depth guide roller 14 and the coulter 16 can be adjusted by moving the top link 20 in its longitudinal direction L. In the state shown in FIG. 1, the depth control roller 14 and the seed coulter 16 run on the same plane, so that there is no height difference between the depth control roller 14 and the seed coulter 16.

In the state shown in FIG. 2, the upper link 20 was moved axially in its longitudinal direction L, namely against the direction of travel F, so that a pivotable carrier part 24 of the coulter carrier 12 was pivoted about the pivot axis 26. The setting of the swivel angle a results in the deposition depth z1 shown. The depth control roller 14, the coulter 16 and the furrow roller 28 are attached to the pivotable support part 24, the support part 24 being articulated on the upper link 20 of the parallelogram linkage 18. In the event of an axial movement of the upper link 20, the carrier part 24 including the depth control roller 14, seed coulter 16 and furrow roller 28 is pivoted, the pivot axis 26 of the carrier part 24 being at the level of the lower link 22 of the parallelogram linkage 18. The carrier part 24 is articulated to the upper link 20 in such a way that the set placement depth z1, z2 increases as the pivoting of the carrier part 24 increases.

In the state shown in FIG. 3, the swivel angle a was increased again, so that a greater placement depth z2 was also set. The pivoting kinematics shown allow the placement depth z1, z2 to be set by means of a longitudinal movement or axial movement of the upper link 20. The upper link 20 can, for example, be coupled to a remotely actuated adjustment device, for example an electrical, hydraulic, pneumatic or mechanical adjustment device, so that a user can initiate an axial movement of the upper link 20 remotely. This results in a high level of operating convenience with regard to the setting of the placement depth z1, z2. Furthermore, the upper links 20 of several or all of the sowing devices 10 of a seed drill can be connected to one another via a cross frame or crossbar, so that the placement depth z1, z2 of several or all of the sowing devices 10 of a seed drill can be set simultaneously by moving the cross frame or the crossbar.

4 to 6 each show two seeding devices 10a, 10b of a seed drill arranged next to one another. Analogous to that shown in FIGS The sowing device 10 also has the sowing devices 10a, 10b shown in FIGS. 4 to 6 each have a coulter carrier 12a, 12b to which a depth guide roller 14a, 14b, a coulter 16a, 16b and a furrow roller 28a, 28b are attached. The coulter supports 12a, 12b each comprise a parallelogram linkage 18a (the parallelogram linkage of the coulter support 12b is covered), the parallelogram linkages 18a each having an upper link 20a and a lower link 22a running parallel to the upper link 20a.

The depth guide roller 14a, the coulter 16a and the furrow roller 28a of the sowing device 10a are attached to a carrier part 24a of the coulter carrier 12a which can be pivoted about a pivot axis 26a. The support part 24a of the coulter support 12a is articulated on the upper link 20a and on the lower link 22a of the parallelogram linkage 18a. The depth guide roller 14b, the coulter 16b and the furrow roller 28b of the sowing device 10b are attached to a support part 24b of the coulter carrier 12b which can be pivoted about a pivot axis. The carrier part 24b is articulated to the upper link and the lower link of the parallelogram linkage of the coulter carrier 12b.

The depth guide rollers 14a, 14b, the coulters 16a, 16b and the furrow rollers 28a, 28b of the seeding devices 10a, 10b arranged next to one another are arranged offset from one another in the longitudinal direction L. The placement depth z1, z2 on the respective sowing devices 10a, 10b can be adjusted via a longitudinal movement or axial movement of the upper links 20a of the coulter carriers 12a, 12b. In FIG. 5, the placement depth z1 is set, since the pivotable support parts 24a, 24b of the coulter supports 12a, 12b are pivoted by a corresponding pivot angle a. In FIG. 6, the placement depth z2 is set, since the carrier parts 24a, 24b of the coulter carriers 12a, 12b are pivoted by a corresponding pivot angle a. List of reference symbols

10, 10a, 10b sowing devices 12, 12a, 12b coulter carriers 14, 14a, 14b depth control rollers

16, 16a, 16b coulter 18, 18a parallelogram linkage 20, 20a upper link 22, 22a lower link 24, 24a, 24b support parts 26, 26a pivot axles 28, 28a, 28b furrow rollers

F direction of travel L longitudinal direction z1, z2 placement depths a swivel angle

Claims

[Patent claims]

1. Seeding device (10, 10a, 10b) for a seed drill, with a coulter carrier (12, 12a, 12b); - A coulter (16, 16a, 16b) which is attached to the coulter carrier (12, 12a,

12b) is attached and set up to plant seeds on an agricultural area; and a depth guide roller (14, 14a, 14b) which is attached to the coulter carrier (12, 12a, 12b) and which specifies the placement depth (z1, z2) of the seed to be deposited by the coulter (16, 16a, 16b), characterized in that that the depth control roller (14, 14a, 14b) is positioned in front of the coulter (16, 16a, 16b) in the direction of travel (F).

2. Sowing device (10, 10a, 10b) according to claim 1, characterized in that the coulter carrier (12, 12a, 12b) is a

Comprises parallelogram linkage (18, 18a).

3. sowing device (10, 10a, 10b) according to claim 2, characterized in that the parallelogram linkage (18, 18a) has an upper link (20, 20a) and a lower link (22, 22a), with a height difference between the depth control roller (14, 14a, 14b) and the coulter (16, 16a, 16b) can be adjusted by moving the upper link (20, 20a), preferably in its longitudinal direction (L).

4. sowing device (10, 10a, 10b) according to claim 2 or 3, characterized in that the depth guide roller (14, 14a, 14b) and the coulter (16, 16a, 16b) can be pivoted on one about a pivot axis (26, 26a) Support part (24, 24a, 24b) of the coulter support (12, 12a, 12b) are attached, the support part (24, 24a, 24b) preferably on the upper link (20, 20a) and / or the lower link (22, 22a) of the

Parallelogram linkage (18, 18a) is articulated.

5. sowing device (10, 10a, 10b) according to claim 4, characterized in that the carrier part (24, 24a, 24b) together with the depth guide roller (14, 14a, 14b) and seed coulter (16, 16a, 16b) can be pivoted in its longitudinal direction (L) by moving the upper link (20, 20a).

6. Sowing device (10, 10a, 10b) according to claim 4 or 5, characterized in that the pivot axis (26, 26a) of the carrier part (24, 24a, 24b) is level with the lower link (22, 22a) of the parallelogram linkage (18, 18a) is located.

7. sowing device (10, 10a, 10b) according to claim 1, characterized in that the coulter carrier (12, 12a, 12b) is designed as a link bracket.

8. sowing device (10, 10a, 10b) according to one of the preceding claims, characterized in that in the direction of travel (F) behind the coulter (16, 16a, 16b) and / or the depth control roller (14, 14a, 14b) a furrow and / or pressure roller (28, 28a, 28b) and / or a harrow element is arranged.

9. Seeder, with several sowing devices (10, 10a, 10b); characterized in that one, several or all of the sowing devices (10, 10a, 10b) are designed according to one of the preceding claims.

10. Seeder according to claim 9, characterized in that the depth control rollers (14, 14a, 14b) and the coulters (16, 16a, 16b) of at least two seeding devices (10, 10a, 10b) arranged next to one another are offset to one another in the longitudinal direction (L) are.

11. Seeder according to claim 9 or 10, characterized in that the coulter carriers (12, 12a, 12b) of the sowing devices (10, 10a, 10b) are attached to a common cross frame or cross bar.