Seed planting unit and seed delivery device

Abstract

The invention relates to a seed placement unit (10) for introducing seed into soil, comprising a hollow drill (14) and an inner drill (16) guided within the hollow drill (14). The inner drill (16) is displaceable relative to the hollow drill (14) in the longitudinal direction of the hollow drill (14). A seed feeder (38) is provided on the hollow drill (14). The seed placement unit (10) is designed to perform the following steps for introducing the seed: a) Drilling a borehole (30) into the ground using the hollow drill (14) and the internal drill (16) inserted into the hollow drill (14), b) Retracting the internal drill (16) beyond the seed feed (38), c) Introducing seed into the borehole (30) via the hollow drill (14), d) Advance the internal drill (16) in the hollow drill (14) and compact and / or press the seed into the borehole (30).

Description

[0001] The invention relates to a seed planting unit and seeding device.

[0002] The seeds of a tree or plant are naturally spread millions of times by trees or plants, of which only a small percentage grow into trees or plants. This is a very inefficient method of growing trees or plants over a large area in a short space of time. For this reason, humans have been assisting nature in this planting process for many centuries. This can be done in different ways. Without mechanical assistance, humans can spread seeds loosely over a certain area so that they lie on the surface of the forest and produce shoots. This is almost as inefficient as the process in nature. Another option, without mechanical assistance, is to work the seeds into the soil so that they do not have to first penetrate any layers above the soil, such as moss. This is already a more efficient method of planting a larger number of trees or plants.to plant plants.

[0003] Since these methods of sowing seeds are both inefficient and time-limited due to the human involvement, they should be done by machines. Mechanical, especially autonomous, sowing of seeds currently takes place primarily on arable land, because these areas require the use of less complex machines, as they generally do not have obstacles such as trees, tree stumps, or roots.

[0004] The invention is based on the object of proposing a device for sowing seeds which is highly automated and / or precise and / or cost-effective.

[0005] To solve this problem, a seed planting unit for planting seeds into the soil is provided, comprising a hollow auger and an inner auger guided within the hollow auger. The inner auger is movable relative to the hollow auger in the longitudinal direction of the hollow auger. A seed feeder is provided on the hollow auger. The seed planting unit is designed to perform the following steps for planting the seeds. a) Drilling a hole into the ground using the hollow drill and the inner drill inserted into the hollow drill, b) Retract the inner drill until it reaches the seed feeder, c) introducing seeds into the borehole via the seed feeder and the hollow drill, d) Advance the inner drill bit in the hollow drill bit and compact and / or press the seed in the borehole.

[0006] The hollow drill bit and the inner drill bit guided within the hollow drill bit form a "complete" drill bit through which a borehole can be drilled into the soil. The hollow drill bit offers the advantage of fulfilling several functions at once. Firstly, it houses the inner drill bit, thus serving as a "complete" drill bit for extracting soil from the borehole. Secondly, it allows the seed to be introduced into the soil via the interior of the hollow drill bit.

[0007] The inner auger can fill the interior of the hollow drill during the drilling process, preventing soil from penetrating the hollow drill. After the drilling process, the inner auger can be moved or traversed lengthwise within the hollow drill, and in particular, pulled out far enough to expose the interior of the hollow drill for seed introduction. The seed can thus be introduced into the borehole and thus into the soil via the interior of the hollow drill. The inner auger can then be moved or traversed lengthwise within the hollow drill until it reaches the borehole, where it presses the seeds into the borehole.

[0008] This ensures that the seeds are reliably positioned at the desired depth in the soil, thus ensuring an ideal germination process.

[0009] The movement or displacement in a substantially vertical direction of both the hollow drill and the inner drill guided within the hollow drill can be achieved using any type of linear drive. The hollow drill and the inner drill each have their own linear drive, allowing them to be moved separately and, in particular, displaced relative to each other.

[0010] The seed feeder is attached to the hollow auger in such a way that the seed can be fed into the interior of the hollow auger and thus into the borehole via the seed feeder. This has the advantage that the auger does not have to be moved out of the borehole, and the borehole is thus supported by the hollow auger during drilling and seed placement.

[0011] Optionally, the hollow auger can be retracted from the borehole a defined distance before advancing the inner auger and inserting the seed. This allows the seed to be placed in the borehole in a more efficient manner. In particular, a larger cavity is created for the seed. This has the advantage of placing the seed at the deepest point and thus centrally in the borehole. Furthermore, it ensures that the seed is pushed out of the hollow auger during the pressing process and pressed into the soil.

[0012] Furthermore, the seed planting unit can include a soil feeder for introducing soil into the borehole, particularly after seed has been placed in the borehole and before the inner auger is advanced within the hollow auger. This allows the seed to be re-covered with soil, which has the advantage of better protecting it from external environmental influences.

[0013] For example, a collecting funnel is provided on the seed planting unit, which surrounds the hollow drill bit in the circumferential direction and collects the soil extracted from the borehole during the drilling process. The collecting device is connected in particular to a soil feed system, which can in particular feed the collected soil into the borehole after seed has been introduced into the borehole and before the inner drill bit is advanced in the hollow drill bit. This allows the borehole to be easily filled with soil, as the soil is first conveyed into the collecting funnel via the hollow drill bit. After the sowing process is completed, the collected soil can be returned to the borehole, thus eliminating the need for additional devices to fill or convey soil into the borehole.

[0014] The hollow drill bit can have a drilling profile on its outside, in particular a helical drilling profile, wherein the drilling profile can transport soil from the borehole into the collecting device, particularly when rotated in one direction, and can transport soil from the collecting device into the borehole when rotated in the opposite direction. This enables easy removal of soil from and easy introduction of soil into the borehole.

[0015] In particular, a drive is provided that can rotate the hollow drill bit, wherein the rotation occurs during the insertion of the hollow drill bit into the borehole and / or the retraction of the hollow drill bit from the borehole. In particular, the rotation of the hollow drill bit can occur independently of the retraction and / or advancement of the inner drill bit in order to convey soil from or into the borehole independently of the movement or position of the inner drill bit.

[0016] In particular, the inner drill can rotate with the hollow drill or be fixed in the direction of rotation when the hollow drill rotates.

[0017] Optionally, the seed planting unit includes an alignment device by means of which the hollow drill, in particular the angle of the hollow drill, can be aligned relative to the soil surface. This allows the drill to be aligned in the desired drilling direction, regardless of the inclination of the subsoil. In particular, perpendicular, i.e., vertical, drilling into the soil can always be ensured in uneven working areas, for example, on a slope or inclined subsoil. This allows for easy seed insertion into the soil. The device includes any type of actuator that enables the hollow drill and the inner drill to be actively or passively aligned perpendicular to the soil.

[0018] In addition, the seed planting unit preferably has a chassis, in particular a tracked chassis, wherein the chassis has a control and / or navigation means for moving to a position for the borehole and / or is designed to be autonomous. A chassis is understood here to mean any type of device that can move the seed planting unit across the ground at a relative speed. This can preferably be a drive with a tracked chassis, but wheels can also be included. A chassis is also understood to mean a drive on which the seed planting unit can move using leg-like devices or supports. With the chassis and the associated control unit, the seed planting unit can be moved in various application areas, such as forests, deserts, or swamps.

[0019] Using the navigation system, which can also be included in the control unit, the chassis can be moved to a defined sowing point where the seed is to be placed in the soil. Navigation can preferably be performed autonomously. For example, data from GPS or equivalent systems and / or sensors such as acceleration sensors, yaw rate sensors, speed sensors, and / or radar and / or LIDAR are used for this purpose. Alternatively, navigation can be performed by an operator using suitable controls, both wired and wireless.

[0020] Additionally, devices for preparing the soil, such as a mower, can be provided. This can prepare the soil in such a way that the borehole can be drilled in favorable soil conditions.

[0021] Furthermore, a seed device is provided, for example, on the seed feeder, wherein the seed device has a seed line connected to the seed feeder and at least one seed tank. The seed line connects the seed tank to the seed feeder of the hollow drill. The seed line is preferably made of a flexible material, for example a plastic, so that it can be moved with the hollow drill, which can be moved vertically. Alternatively, the seed line is made of a flexible material in a partial area between the seed tank and the hollow drill. The seed tank is intended for storing or preserving seeds.

[0022] To solve the problem, a method for inserting seeds into soil using a seed planting unit as described above is further provided. The method comprises the following steps: a) Drilling a hole into the ground using the hollow drill and the inner drill inserted into the hollow drill, b) Retract the inner drill until it reaches the seed feeder, c) introducing seeds into the borehole via the seed feeder and the hollow drill, and d) Advance the inner drill bit in the hollow drill bit and compact and / or press the seed in the borehole.

[0023] The hollow drill is preferably withdrawn from the borehole by a defined distance before the inner drill is advanced.

[0024] Furthermore, soil can be introduced into the borehole after the seeds have been placed in the borehole and before the inner drill bit is pushed forward in the hollow drill bit.

[0025] To achieve the object, a seeding device is further provided, in particular for a seed planting unit as described above. The seeding device has a seed line, which can be connected in particular to the seed feed, and at least one seed tank, wherein the seed can be conveyed from the seed tank into the seed line and from there to the seed feed. The seed tank can be designed on its underside, which is located closer to the ground, such that almost all of the seeds in the seed tank can be conveyed from the seed tank into the seed line, preferably by gravity, for example through a funnel-shaped cone. Alternatively, the seeds can be conveyed by a vibration device, for example an unbalanced drive, which generates vibrations and conveys the seeds from the seed tank into the seed line.

[0026] Preferably, a compressed air device is provided on the seeding device to feed the seed conveyed into the seed line to the seed feeder. The compressed air device can convey the seed from the outlet of the seed tank via the seed line to the seed feeder using compressed air pulses. For example, a compressor with a connected compressed air reservoir can be provided, which generates compressed air continuously or as needed. Alternatively, only a compressed air reservoir can be provided, which is filled with compressed air before the start of the sowing process. Alternatively, the compressed air device has a valve that can be controlled to pressurize or fill the seed magazine and / or the seed line with compressed air.

[0027] The seeding device optionally features a pressure reducing device that can reduce the air pressure at the seed feed. The pressure reducing device can limit the pressure in the seed line to a preset pressure, so that, for example, the seeds are not damaged by the compressed air forced into the seed line. Pressure relief valves, for example, can serve as pressure reducing devices.

[0028] Furthermore, the seed device can have a plurality of seed tanks, each seed tank having a valve device for conveying the seed from the seed tank into the seed line. If a plurality of seed tanks is provided, preferably different seeds of trees or plants can be carried with the seed device. The valve device of each tank can ensure that only the desired seed in the desired quantity can be conveyed into the seed line. If a plurality of tanks are used, a seed magazine can be included, which can accommodate the seed tanks on its upper side using suitable devices or means. The seed line is attached / fastened / mounted on the side of the seed magazine facing the drills. In addition, the compressed air device can be attached to the seed magazine, preferably on a side opposite the seed line connection.

[0029] Optionally, additional tanks for introducing substances, such as fertilizer, into the seed line for the seeding device are provided. This allows additional substances to be carried along with the seed planting unit, which can positively influence tree or plant growth. For example, if a planting area is known to have relatively low nutrient soil, a defined amount of fertilizer could be added or pumped into the borehole. On the other hand, appropriate pesticides can be used, for example, if it is known that pests known to affect the seeds are prevalent in the planting area.

[0030] Further advantages and features are evident from the following description in conjunction with the attached drawings. These show: Fig. 1 a schematic structure of the seed planting unit on a chassis provided for it; Fig. 2 a sectional view of the seed setting unit as in Fig. 1 in side view; Fig. 3 the seed setting unit as in Fig. 2 with hollow drill and inner drill raised after completion of the borehole; Fig. 4 the seed setting unit as in Fig. 2 with extended internal drill; Fig. 5 Detailed view of the seed feed on the hollow drill as in Fig. 2 with seeds inside; Fig. 6 Detailed view of the seed tanks and compressed air device as in Fig. 2 with sperm in the vas deferens; Fig. 7 Detailed view of the borehole of the seed setting unit as in Fig. 2 with inner drill bit in the hollow drill and seed in the borehole; Fig. 8 Detailed view of the hollow drill and the inner drill of the seed setting unit as shown in Fig. 2 with radially arranged funnel to collect the soil during the drilling process;

[0031] In Fig. 1 shows a seed planting unit 10. The seed planting unit 10 includes a drilling device 12, which includes an outer hollow drill 14 and an inner drill 16 guided within the hollow drill, as well as a linear drive 18. The hollow drill 14 is connected to the seed tanks 22 by means of a seed line 20. The seed 28 (see Fig. 2), hereinafter also referred to as seeds, of the trees or plants to be planted. The seeds 28 are conveyed from the seed tank 22 into the seed magazine 26 through a valve (not shown here). By means of the compressed air device 24, which pressurizes the seed magazines 26 and the connected seed line 20 with compressed air, the seeds 28 located in the seed magazine 26 are conveyed in the direction of the hollow drill 14. The seed line 20 is connected at one end of the line to the seed magazine 26 and at the other end to the seed feed 38 (see Fig. 2). Furthermore, a control unit 32 for controlling the compressed air device 24 and valves (not shown) of the seed magazine 26, as well as additional tanks, hereinafter referred to as additional tanks 34, which contain fertilizers and / or pesticides, and navigation means 48 are included in the seed planting unit 10. The seed planting unit 10 is attached or mounted on a chassis 36.

[0032] The drilling device 12 serves to drill a borehole 30 into which the seed 28 is placed or conveyed. The drilling device 12 consists of a hollow drill 14 and an inner drill 16 guided within the hollow drill 14. The hollow drill 14 has a drilling profile 50 on its outside, in particular a helical or screw-like drilling profile. The inner drill 16 prevents soil from penetrating the hollow drill 14 during the drilling process.

[0033] By means of the linear drive 18, both the hollow drill 14 and the inner drill 16 can be moved vertically relative to the ground, individually or jointly. Furthermore, a rotary drive is provided to rotate the hollow drill 14 about its longitudinal axis.

[0034] The seed line 20 connects the seed feeder 38, which is provided on the hollow drill 14, with the seed magazine 26, which is located below the seed tanks 22. Thus, the seeds 28 are conveyed from the seed tanks 22, via the seed magazine 26, further via the seed feeder 26 and the hollow drill 14 into the borehole 30.

[0035] The compressed air device 24 is attached to the seed magazine 26. Compressed air is conveyed or pressurized through this device into the seed magazine 26, so that the seed 28 contained therein is conveyed by compressed air toward the seed feed 38 and into the hollow drill 14, and from there into the borehole 30.

[0036] The seed magazine 26 connects the seed line 20, the seed tanks 22, and the compressed air device and serves for temporarily storing the seed 28 and transporting the seed 28 toward the borehole 30. The seed magazine 26 has, on its underside, which runs parallel to the x-plane of the ground, a device for attaching it to a frame, which in turn is connected to the chassis 26. Devices for attaching the seed tanks 22 are provided on the upper side, which also runs parallel to the x-plane of the ground and is located above the underside of the seed magazine 26.

[0037] The seed tanks 22 preferably contain different types of seeds. On the underside of each seed tank 22, a slope is provided, forming a funnel so that all seeds 28 contained in the seed tanks 22 are conveyed out. Furthermore, valves (not shown) are provided in the lower area of ​​the seed tanks, which adjoins the top of the seed magazine 26, to control the removal of seeds from the seed tanks 22.

[0038] By means of the additional tanks 34, fertilizers and / or pesticides are carried along with the seed planting unit 10 in order to create better growth conditions for the seed 28 in the borehole 30.

[0039] The control unit 32 serves to navigate the seed planting unit 10 and / or to control the seed planting unit 10 and its components, such as the linear drive 18 and / or the drilling device 12, and / or the valves (not shown) and / or the compressed air device 24. The navigation of the seed planting unit 10 takes place autonomously.

[0040] The Fig. 2 to 8 illustrate the drilling and sowing process of the seed planting unit 10 and are described below.

[0041] In Fig. 2, the seed planting unit 10 is shown in a side view in cross-section. Before the seed planting unit 10 begins drilling, it removes excess grass from the location where the borehole 30 is to be drilled using a device for preparing the ground, hereinafter referred to as the mower 40. After the drilling site has been prepared, the seed planting unit 10 moves into position over the drilling site with the drilling device 12. Once the drilling device 12 is in the intended position, which is determined by comparing GPS data and / or sensor data, the drilling device 12 is moved perpendicular to the x-axis toward the ground using the linear drive 18. If the drilling device 12 is not perpendicular to the x-plane of the ground or not vertical, for example due to an uneven or inclined surface, it can be aligned vertically using the alignment device 42.

[0042] When the drill head of the drilling device 12 is at ground level, it begins drilling with the hollow drill 14 and the internal drill 16 located therein. The hollow drill is moved vertically downward by the linear drive and rotated about its longitudinal axis by the rotary drive, so that the drilling profile 50 drills into the ground. During the drilling process, the internal drill 16 is located within the hollow drill 14, which forms the drilling device 12, so that no soil penetrates into the interior of the hollow drill.

[0043] Furthermore, the seed feed 38 is closed by the inner drill 16 located in the hollow drill 14.

[0044] During the drilling process, soil, which is not shown here, is extracted from the borehole 30 by the hollow drill 14 or its drilling profile 50.

[0045] Once a borehole 30 has been drilled to a predetermined depth, the drilling process is terminated. The drilling depth can be determined depending on the selected seed or the prevailing environmental conditions. During the drilling process, the seed line 20 moves vertically toward the ground with the hollow drill 14 and the attached seed feeder 38.

[0046] Fig. 3 shows a seed planting unit 10 as in Fig. 2. The difference is that the seed planting unit 10 has completed the drilling process with the drilling device 12. After reaching the desired drilling depth, both the hollow drill 14 and the internal drill 16 located therein were raised by a defined distance by means of the linear drive 18, so that a hollow space exists at the bottom of the borehole 30.

[0047] Fig. 4 shows a seed setting unit 10 as in Fig. 3. The difference is that the inner drill 16 has been almost completely extended from the hollow drill 14, so that the seed feed 38 is released. Subsequently, the seed 28 intended for the borehole 30 is conveyed from the corresponding seed tank 22 into the seed magazine 26, in which the valve (not shown) below the corresponding seed tank 22 is activated. The compressed air device 24 is then activated or actuated and compressed air flows into the seed magazine 26, whereby the seed 28 contained therein is accelerated and set in motion, which is illustrated by the arrow in the seed magazine 26. The seed 28 is conveyed further via the seed line 20, via the seed feed 38, into the hollow drill 14 and then into the borehole 30.

[0048] If the soil surrounding the borehole 30 is known to be nutrient-poor, fertilizer could be added to the borehole 30 via the additional tanks 34 to promote the growth of the seed 28 located in the borehole 30. For this purpose, fertilizer is pumped from the additional tank 34 into the seed magazine 26. Subsequently, as previously with the seed 28, the compressed air device 24 is activated, and compressed air is fed into the seed magazine, thereby pumping the fertilizer into the borehole 30. However, the fertilizer could also be added to the seed magazine 26 at the same time as the seed 28 and pumped together into the borehole 30. The above applies correspondingly to the required crop protection products.

[0049] Fig. 5 shows a detailed view of the drilling device 12 with the seed feeder 38 attached or fastened to the hollow drill 12 and the seed 28 conveyed or moved through the seed line 20, the seed feeder 38 and the hollow drill 14.

[0050] As already mentioned under Fig. 4, the inner drill 16 is almost completely moved or extended out of the hollow drill 14, thereby releasing the seed feed 38. The shape of the seed feed 38 is advantageously designed so that the seed 28 is not or hardly damaged during transport from the seed tank 22 to the borehole 30. For this purpose, one end of the seed feed 38, which is connected to the seed line 20, has a curvature or radius. The other end of the seed feed 38, which is located in the upper region of the hollow drill 14, has a curvature starting from parallel to the x-plane of the soil in a vertical direction to the soil, whereby the seed is conveyed or brought into the hollow drill 14 in a gentle manner.

[0051] Preferably, a pressure reducing device is provided on the seed feed 38, via which the pressure generated by the compressed air device 24 is reduced or reduced to a defined pressure. In particular, no seed 28, fertilizer, or other agents are conveyed by compressed air within the hollow drill 14. The seed 28, fertilizer, or other agents fall downward into the borehole within the hollow drill, either solely or primarily under the influence of gravity.

[0052] Fig. 6 shows a detailed view of a seed 28 located in the seed magazine 26, which is to be conveyed into the borehole 30. Once the corresponding seed 28 of a tree or plant species that is to be conveyed into the borehole 30 has been determined, a valve located below the corresponding seed tank 22 (not shown here) is activated, and the seed 28 is conveyed into the seed magazine 26 or falls into it. Once the seed 28 is located in the seed magazine 26, the compressed air device 24 or a valve (not shown) located upstream of it is activated, so that the seed 28 is conveyed into the borehole 30 by means of compressed air.

[0053] In Fig. Figure 7 shows a detailed view of the borehole 30 and a seed 28 located therein. Here, the inner drill 16 located in the hollow drill 14 is moved vertically toward the borehole 30 and is fully inserted into the hollow drill 14. The seed 28 is then pressed into the borehole 30 by means of the hollow drill 14 and inner drill 16.

[0054] In Fig.Figure 8 shows a detailed cross-sectional view of the drilling device 12 and a funnel 44 arranged circumferentially around the hollow drill 14. The hollow drill 14 and the inner drill 16 penetrate the ground and create a borehole 30 with a defined drilling depth BT. During the drilling process, the soil 46 is conveyed from the borehole 30 into the collecting funnel 44 by means of the drilling profile of the hollow drill 14. Once the defined drilling depth BT of the borehole 30 has been reached, the inner drill 16 is moved out of the hollow drill 14 until the seed feed 38 is released. This allows the seed 28 to be introduced into the borehole 30. Once the seed 28 is in the borehole 30, the inner drill 16 is moved back completely vertically into the hollow drill 14. The seed is then pressed into the borehole 30 by means of the drilling device 12.In the final step, the hollow drill 14 and the inner drill 16 located therein are moved or driven out of the borehole 30 and rotated. The direction of rotation of the hollow drill 14 is counter to the direction of rotation of the drilling process, so that the soil 46 collected in the collecting funnel 44 is conveyed or transported back into the borehole 30, essentially completely filling and / or compacting it. Optionally, soil can also be conveyed into the borehole by rotating the hollow drill 14 before the seed 28 is pressed into the borehole 30. List of reference symbols 10 seed planting units 12 drilling device 14 hollow drills 16 internal drills 18 Linear drive 20 Seed line 22 seed tanks / s 24 Compressed air device 26 Seed Magazine 28 seeds 30 boreholes 32 Control unit 34 additional tanks 36 chassis 38 Seed feeding 40 mower 42 Alignment device 44 collecting funnels 46 Soil 48 navigation tools BT drilling depth

Claims

[1] Seed planting unit (10) for introducing seed (28) into a soil, comprising a hollow drill (14) and an inner drill (16) guided in the hollow drill (14), wherein the inner drill (16) is displaceable relative to the hollow drill (14) in the longitudinal direction of the hollow drill (14), wherein a seed feed (38) is provided on the hollow drill (14), wherein the seed planting unit (10) is designed to carry out the following steps for introducing the seed (28): a) drilling a borehole (30) into the ground through the hollow drill (14) and the inner drill (16) inserted into the hollow drill (14), b) Retract the inner drill (16) until it reaches the seed feed (38), c) introducing seed (28) into the borehole (30) via the hollow drill (14), and d) advancing the inner drill (16) in the hollow drill (14) and compacting and / or pressing the seed (28) in the borehole (30). [2] Seed setting unit according to claim 1, characterized bythat the hollow drill (14) can be withdrawn from the borehole (30) by a defined distance before the inner drill (16) is advanced. [3] Seed planting unit according to one of claims 1 and 2, characterized by that the seed planting unit has a soil feed for introducing soil into the borehole, in particular after the introduction of seed (28) into the borehole (30) and before the advance of the inner drill (16) in the hollow drill (14). [4] Seed planting unit according to one of the preceding claims, characterized bythat a collecting device (44), in particular a collecting funnel (44) surrounding the hollow drill (14) in the circumferential direction, is provided, which collects the earth (46) extracted from the borehole (30) during the drilling process, wherein the collecting device is in particular connected to a earth feed which can introduce the collected earth (46) into the borehole (30) after the introduction of seed (28) into the borehole (30) and before the inner drill (16) in the hollow drill (14) is advanced. [5] Seed planting unit according to one of the preceding claims, characterized by that the hollow drill (14) has a drilling profile on the outside, in particular a helical drilling profile, wherein the drilling profile can convey earth material (46) from the borehole (30) into the collecting device (44), in particular when rotated in one direction, and can convey earth material (46) from the collecting device (44) into the borehole (30) when rotated in the opposite direction. [6] Seed planting unit according to one of the preceding claims, characterized by that the seed planting unit has an alignment device (42) by means of which the seed planting unit (10), in particular the angle of the seed planting unit, can be aligned relative to the surface of the soil. [7] Seed planting unit according to one of the preceding claims, characterized by in that the seed planting unit (10) has a chassis (36), in particular a tracked chassis, wherein the chassis (36) in particular has a control system (32) and / or has navigation means for moving to a position for the borehole and / or is designed to be autonomous. [8] Seed planting unit according to one of the preceding claims, characterized by that the seed planting unit has at least one device for preparing the soil (40), in particular a mower (40). [9] Seed planting unit according to one of the preceding claims, characterized bythat a seed device is provided on the seed feed (38), wherein the seed device has a seed line (20) connected to the seed feed and at least one seed tank (22). [10] A method for introducing seeds (28) into a soil, with a seed planting unit according to one of the preceding claims, comprising the following steps: a) drilling a borehole (30) into the ground through the hollow drill (14) and the inner drill (16) inserted into the hollow drill (14), b) Retract the inner drill (16) until it reaches the seed feed (38), c) introducing seed (28) into the borehole (30) via the hollow drill (14), and d) advancing the inner drill (16) in the hollow drill (14) and compacting and / or pressing the seed (28) in the borehole (30). [11] Method according to claim 10, characterized bythat the hollow drill (14) is withdrawn from the borehole (30) by a defined distance before the inner drill (16) is advanced. [12] Method according to claim 11, characterized by that after the introduction of seed (28) into the borehole (30) and before the advance of the inner drill (16) in the hollow drill (14), soil (46) is introduced into the borehole (30). [13] Seeding device, in particular for a seed planting unit according to one of the preceding claims, characterized by that the seed device has a seed line which can be connected in particular to the seed feed and at least one seed tank, wherein the seed can be conveyed from the seed tank into the seed line and from there to the seed feed. [14] Seeding device according to claim 13, characterized by that a compressed air device is provided to feed the seed conveyed into the seed line to the seed feeder. [15] Seeding device according to claim 14, characterized by that a pressure reducing device is provided by which the air pressure at the seed feed can be reduced. [16] Seeding device according to one of claims 13 to 15, characterized by that a plurality of seed tanks are provided, each seed tank having a valve device for conveying the seed from the seed tank into the seed line. [17] Seeding device according to one of claims 13 to 16, characterized by that additional tanks are provided for introducing substances, such as fertilizers, into the seed line.

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