SOIL TILLAGE EQUIPMENT

Description

TECHNICAL FIELD

[0001] The present invention relates to a soil tillage device for tilling a soil with soil tillage tools along a working direction, which is designed to carry out a left-turning tillage of the soil in a first working position and a right-turning tillage of the soil in a second working position, wherein a soil post-processing unit is attached to the soil tillage device. BACKGROUND

[0002] Soil cultivation equipment is known in the art that is used to cultivate soil, such as a field, using tillage tools to improve soil quality and prepare the soil for subsequent cultivation or sowing. Typical soil cultivation equipment of this type includes ploughs, for example, with attached plough bodies that turn the soil over as they move across the soil in a working direction. Turning is sometimes achieved by a share of the plough body detaching a piece of soil from a furrow shovel, guiding it onto a moldboard, rotating it around a longitudinal axis, and then depositing it to one side of the detached piece.With this type of right-turn tillage, the soil beam is placed on the ground to the right of its original position, as seen in the direction of work. The soil beam is rotated clockwise to the right, as seen in the direction of work. With left-turn tillage, the process is exactly the opposite. d.h. The soil beam is placed on the ground to the left of its original position in the working direction and rotated counterclockwise to the left. The working direction is the direction in which the tillage implement is moved to cultivate the soil.

[0003] A soil tillage implement that tills soil by turning left or right within the meaning of the present invention is particularly exposed to a lateral force and can, for example, also be a disc harrow whose discs, angled to a working direction, cut and mix the soil. Depending on the angle of the discs of the disc harrow relative to the working direction, parts of the tilled soil are displaced to the right or left, thus resulting in a left- or right-sided force.

[0004] It is also known to run a soil post-processing unit behind the soil tillage implement to enable, for example, reconsolidation, leveling, or seeding in the same operation. Examples of such soil post-processing units include soil rollers.

[0005] Soil cultivation tools, such as the aforementioned plough bodies or discs, which cause one of the described or similar soil displacements, always exert a force on the soil directed transversely to the working direction. An opposing force acts from the ground on the tillage implement, which manifests itself as a lateral pull to the right when the tillage implement moves along the working direction in a left-turning working position, or as a lateral pull to the left when the tillage implement moves in the working direction. If you want to prevent the tillage implement from drifting off the desired track while tilling the soil, these lateral pull forces must be compensated by the tillage implement itself or by the tractor pulling or pushing the tillage implement.

[0006] To absorb these forces, existing systems are known, for example, to the soil cultivation tool, which sweep the soil parallel to the working direction and absorb the lateral traction forces. However, such systems are not suitable for all soil cultivation equipment. For example, in a parallel plough, there is insufficient space between the individual plough bodies to accommodate a sufficiently large number of systems, or such systems would impede soil continuity between the adjacent plough bodies of a parallel plough. Furthermore, such systems represent additional wear parts.

[0007] It's also known to equip the tractor with a control system that counteracts the effect of side pull, ensuring that the tractor and towed tillage implement travel in a straight line. However, this can sometimes place significant strain on the tractor's tires, which constantly roll with slip, and increase the tractor's fuel consumption.

[0008] Furthermore, guide wheels attached to the soil tillage implement are also known in the prior art, e.g. DE 78 04 395 U1, which counteract the lateral pull, but which can overcompact the already tilled soil in the area of ​​their tracks.

[0009] DE 101 47 595 A1 discloses a soil tillage combination consisting of soil tillage tools mounted on a frame and a soil roller mounted centrally on the frame via a joint. The soil roller is positioned at an angle to the working direction to counteract slope drift of the soil tillage combination. The soil roller runs in the engagement track of the soil tillage tools.

[0010] Particularly in the case of ploughs, so-called reversible ploughs have recently become popular. These feature both a left-turning and a right-turning working position, between which the plough can be switched. For such tillage implements that can be switched between left-turning and right-turning working positions, the direction of the lateral pull depends on the respective working position. Consequently, any measure taken to absorb lateral forces must be equally suitable for balancing forces acting to the left as well as forces acting to the right. At the same time, with such tillage implements, parts of the soil are deposited on the left or right side outside the engagement track of the tillage tools, depending on the working position.

[0011] From DE 34 12 512 A1 a soil tillage implement with left-turning and right-turning working positions according to the preamble of claim 1 is known. PRESENTATION OF THE INVENTION

[0012] Against this background, it is an object of the present invention to provide a soil tillage implement which has both a left-turning and a right-turning working position, with a soil post-processing unit attached thereto, which can be operated without lateral pull, without entailing the above disadvantages of unwanted soil compaction, wear, uneconomical operation of a tractor used to pull the soil tillage implement or insufficient coverage of a soil tillage track between the soil tillage implement and the soil post-processing unit.

[0013] This object is achieved by a soil tillage device according to claim 1. Advantageous further features of the invention emerge from the subclaims.

[0014] According to one aspect of the present invention, a soil tillage device is provided with a soil tillage unit for tilling a soil with soil tillage tools along a working direction, which is designed to carry out a left-turning tillage of the soil in a first working position and a right-turning tillage of the soil in a second working position, wherein a soil post-processing unit is attached to the soil tillage unit by means of a pivotable adjustment mechanism such that the soil post-processing unit is arranged behind the soil tillage unit in the working direction, wherein the adjustment mechanism enables the soil post-processing unit to be laterally displaced with respect to the working direction and to be adjusted to both sides at an angle of adjustment relative to the working direction in order to exert an adjustable lateral traction on the soil tillage device through interaction with the soil.

[0015] In this context, the interaction with the ground includes in particular sliding friction, rolling friction and a combination thereof, but also any other type of mechanical force absorption.

[0016] By attaching the soil tillage unit to the soil cultivation unit by means of a pivoting adjustment mechanism, the lateral pull generated by the tillage unit during left-turning cultivation as well as right-turning cultivation can be compensated for by the lateral traction force exerted by the soil tillage unit. This makes it easier for the combination of soil tillage unit and soil tillage unit to travel straight ahead. At the same time, the soil tillage device performs soil tillage by the soil tillage unit and additional post-processing, such as cultivation or reconsolidation, by the soil tillage unit in a single operation. Because the soil tillage unit can be moved laterally in relation to the working direction, the track it travels over can overlap with a soil tillage track of the soil tillage unit.Additional mechanisms for absorbing lateral forces are no longer necessary, or only to a limited extent. The present invention, which allows the soil preparation unit to be both laterally displaced and angle-adjustable, allows for particularly efficient lateral pull compensation and adaptation to the working direction (left and right), which is particularly valuable for plows, disc harrows, and similar soil preparation units.

[0017] The fact that the soil post-processing unit is attached to the soil cultivation unit means that there is a direct or indirect connection between the two units. In particular, this also includes the soil post-processing unit and the soil cultivation unit being attached together and in a fixed relative arrangement to a device. For example, if the soil cultivation implement is attached to a tractor and pulled by it, and the soil cultivation unit is coupled to the tractor for this purpose, the soil post-processing unit can be coupled to the tractor directly or via the soil cultivation unit. Within the meaning of the present invention, the soil post-processing unit then exerts an adjustable lateral traction force on the soil cultivation implement indirectly via the tractor.In such a case, the attachment of the soil post-processing unit to the soil processing unit as described below is equivalent to a corresponding attachment to a tractor or the like.

[0018] Preferably, the adjusting mechanism comprises a first steering rod with a first steering rod length and a second steering rod with a second steering rod length, which connect the soil preparation unit and the soil preparation unit to one another, wherein the first steering rod extends between a first soil preparation unit attachment on the soil preparation unit and a first soil preparation unit attachment on the soil preparation unit, and the second steering rod extends between a second soil preparation unit attachment on the soil preparation unit and a second soil preparation unit attachment on the soil preparation unit, wherein in a first case, the first steering rod and the second steering rod diverge in the working direction,or in a second case, the first handlebar and the second handlebar run parallel to each other and the first handlebar length and / or the second handlebar length is adjustable.

[0019] With the preferred design of the adjustment mechanism using steering rods, it is particularly easy not only to adjust the soil preparation unit relative to a working direction, but also to offset it laterally to the left or right relative to the soil cultivation implement in the working direction. This allows the soil preparation unit to run in a different track than the soil cultivation implement. For example, the soil cultivation tools of the soil cultivation implement can span a total soil cultivation width with which they create an engagement track, but the soil preparation track can extend beyond this engagement track to the left or right depending on the position of the adjustment mechanism. This ensures that lateral pull compensation is accompanied by position compensation, which enables efficient and precise soil cultivation.

[0020] In a preferred embodiment of the adjustment mechanism according to the first case, a steering trapezoid is formed by the first steering rod, a connecting line between the soil processing unit attachments, the second steering rod, and a connecting line between the soil post-processing unit attachments. In this advantageous embodiment, in a neutral position of the adjustment mechanism, d.h. a position in which the angle of attack relative to the working direction is approximately zero, a soil cultivation unit axis runs perpendicular to the working direction and parallel to a soil cultivation unit axis. As soon as the soil cultivation unit is deflected relative to the neutral position, i.e. leaves its neutral soil cultivation track, it is simultaneously adjusted relative to the working direction, which results in a lateral pulling force of the soil cultivation unit as compensation for a lateral pulling force caused by the left- or right-turning cultivation by the soil cultivation unit. If the soil cultivation unit is swivelled out of the neutral position, the preferred steering trapeze of the adjustment mechanism ensures that the instantaneous center of the swivel movement of the soil cultivation unit guided by the steering rods is always behind the soil cultivation unit in the working direction.

[0021] Even in a preferred embodiment of the adjustment mechanism according to the second case, the angle of attack is adjustable by the differently adjustable handlebar lengths.

[0022] Preferably, in a soil tillage implement having steering rods, the first soil post-processing unit attachment and the second soil post-processing unit attachment are arranged on the soil post-processing unit in the working direction such that the soil post-processing unit is located for the most part in front of or behind the first soil post-processing unit attachment and the second soil post-processing unit attachment in the working direction.

[0023] The lateral offset of the tillage unit is determined in particular by the length of the steering rods. If the tillage unit attachments are arranged as far back as possible on the tillage unit, i.e., the tillage unit is located largely in front of the first and second tillage unit attachments in the working direction, the tillage unit and the tillage unit can be positioned closer together and the free space between them can be minimized. At the same time, however, a long length of the steering rods is ensured to ensure the desired lateral offset. In this advantageous embodiment, the length of the tillage implement is therefore shorter, making it easier to lift and turn.If the ground finishing unit is located mostly behind the first and second ground finishing unit attachment in the working direction, a higher strength of the overall arrangement can be expected, which is an advantage especially if the ground finishing unit has to absorb relatively large forces.

[0024] The soil cultivation unit is preferably a plough, more preferably a reversible plough, particularly preferably a fully reversible plough, and most preferably a fully reversible parallel plough, with the soil cultivation tools being plough bodies. With these soil cultivation units, it is particularly advantageous that the soil post-cultivation unit is not only adjustable but also laterally displaceable.

[0025] The soil post-processing unit is preferably designed to effect reconsolidation, leveling or sowing and is in particular a packer roller, rod roller, knife roller, depth control roller, rotary harrow, knife bar, tine bar, leveling bar or seed bar.

[0026] In this preferred embodiment, the soil post-processing unit not only efficiently compensates for lateral pull, but also serves to particularly efficiently reconsolidate and cultivate the soil. A repeat pass over the soil for reconsolidation, leveling, or seeding can then be eliminated, allowing, for example, the cultivation of arable land to be carried out much more efficiently.

[0027] Preferably, a working depth of the soil cultivation tools is adjustable, preferably relative to the soil post-processing unit.

[0028] Because the working depth of the tillage tools is adjustable, it can be adapted to different soil conditions and the desired tillage pattern. The working depth of the tillage tools and their resulting varying interaction with the soil can also influence the strength of the lateral pull caused by the tillage tools. Generally, the deeper the soil is tilled, i.e., the deeper the working depth of the tillage tools is set, the greater the lateral pull of the tillage unit.

[0029] Likewise, the lateral traction force exerted by the tillage unit increases the more the tillage unit interacts with the soil. If, in a preferred embodiment, the working depth is adjustable relative to the tillage unit, this means that the lateral traction caused by the tillage tools and the compensating lateral traction caused by the tillage unit are adjustable independently of each other.

[0030] In a further preferred embodiment, the adjustment mechanism has a height guide, in particular a parallelogram height guide, for adjusting and / or changing the working depth of the soil cultivation tools relative to the soil preparation unit, regardless of the set angle of attack. This makes it possible, in particular, to adjust the force exerted by the soil preparation unit on the soil and thus any possible interaction with the soil.

[0031] Preferably, the soil tillage implement has a first end stop and a second end stop for the adjustment mechanism, by means of which the respective angle of attack can be preset to the left and right with respect to the working direction, wherein the angle of attack can be switched between right and left in particular by switching the adjustment mechanism between the first end stop and the second end stop.

[0032] The angle of attack relative to the working direction has a significant influence on the degree of lateral traction exerted by the soil preparation unit. Together with the interaction between the soil preparation unit and the soil, in particular slippage, sliding friction, etc., it determines the degree of lateral traction. Because the adjustment mechanism has two end stops by which the respective angle of attack can be pre-set, in an advantageous embodiment the degree of lateral traction can be pre-set to the left and right. In particular, if the angle of attack can be switched between the two end stops by switching the adjustment mechanism, the lateral traction exerted by the soil preparation unit can be switched efficiently and very precisely when switching between right-turning and left-turning working positions of the soil cultivation device by moving the adjustment mechanism to the position of the respective end stop.

[0033] Preferably, in a soil tillage device which has a first and a second steering rod according to one of the aforementioned preferred embodiments, the angle of attack is variably adjustable, in particular in that a first mounting distance between the first soil tillage unit mounting and the second soil tillage unit mounting is variably adjustable, in particular in that a second mounting distance between the first soil post-treatment unit mounting and the second soil post-treatment unit mounting is variably adjustable and / or in particular in that the first steering rod length and / or the second steering rod length is variably adjustable.

[0034] With a variably adjustable angle of attack, the lateral traction can be variably adjusted. For this purpose, the distance between the soil tillage unit attachments can be adjusted. The smaller this distance, the less deflection of the steering rods from their neutral positions is required to set a specific angle of attack. Alternatively, or in combination with this, the distance between the soil tillage unit attachments can be adjusted. The smaller this distance, the less deflection of the steering rods from their neutral positions is required to set a specific angle of attack. Alternatively, or in combination with this, the first and / or second steering rod length can be changed. The longer the steering rods, the less effect deflecting the steering rods from their neutral positions has on the angle of attack.In this case, a steering trapezoid spanned by the steering rods and the mounting distances approaches a parallelogram, so that a deflection of the steering rods results in a lateral displacement of the soil preparation unit relative to the working direction, but this lateral displacement is accompanied by a smaller angle of attack. Shortening or lengthening one steering rod relative to the other can also influence the angle of attack.

[0035] Preferably, in the above-mentioned embodiment with variably adjustable angle of attack, the angle of attack is variably adjustable mechanically by means of fixed locking positions, mechanically by means of spring preload, by means of a servo motor controlled by an operator and / or hydraulically by means of automatic control.

[0036] Making the angle of attack variably adjustable using mechanically defined locking positions is a relatively cost-effective and low-maintenance way of ensuring the variable adjustability of the angle of attack. For example, the attachment points of the steering rods on the soil tillage unit and / or on the soil post-processing unit can be adjustable using a hole pattern. It is also conceivable for a steering rod to comprise two or more rods that can be moved relative to one another, with at least one rod having a hole pattern and the other rod having at least one hole, the relative position of the rods being held by a bolt that engages in the hole in one rod and one of the holes in the hole pattern of the other rod. Other, similar mechanisms for adjusting the positions of the attachment points of the steering rods or for adjusting the length of the steering rods can also be used.

[0037] Alternatively, or in combination with a mechanical setting of the set handlebar lengths, a spring can be used to specify the mounting distances between the handlebars. The adjustability of the angle of attack is then achieved by increasing or decreasing the tension of the spring. In a preferred embodiment, an operator can adjust the angle of attack using a servomotor as an alternative or in addition to the mechanical adjustment. For example, if the tillage implement is being pulled by a tractor and the tractor driver notices that the tillage implement is exerting lateral pull on the tractor, they can readjust the angle of attack while driving by actuating a control for the servomotor, without having to interrupt work.In a further preferred embodiment, as an alternative or in addition to the aforementioned adjustment mechanisms, the angle of attack can be fully automatically controlled by a hydraulic system. For example, depending on recorded tractor operating data, such as the distribution of slip between the left and right wheels of the tractor, the tractive forces on a lower link force measuring pin of the tractor, or the angular position of the tractor's front wheels, which are preferably acquired via a data bus of the tractor, the angle of attack can be fully automatically adjusted and / or continuously adapted as needed. This enables particularly economical operation of the soil tillage implement.

[0038] Preferably, the adjustment mechanism is designed to cause the soil processing unit to be adjusted via a positive drive or a sequential circuit as a result of the soil processing unit being switched between the first working position and the second working position.

[0039] In this preferred embodiment, switching the working position of the soil tillage unit between right-turning and left-turning cultivation of the soil triggers a corresponding adjustment and relocation of the soil post-cultivation unit. For example, when switching from left-turning cultivation to right-turning cultivation, the soil post-cultivation unit can be automatically adjusted and relocated to the right. This process can advantageously occur essentially simultaneously with the changeover process.

[0040] Preferably, the soil tillage device can be folded from at least one of the working positions into a transport position in which the soil post-processing unit extends mainly vertically and in which it has a transport height.

[0041] In this context, "extending mainly vertically" means that the extension of the soil refining unit is greater in the vertical direction than in the horizontal direction.

[0042] Because the soil tillage unit extends vertically when the soil tillage implement is in its transport position, it is possible to ensure that the soil tillage implement has a transport width that does not exceed the permissible road transport width, even when the soil tillage unit has a working width that exceeds the permissible road transport width. The preferred design of the adjustment mechanism allows the transport position to be adopted in such a way that not only the permissible road transport width is adhered to, but also that the soil tillage implement is not longer than necessary. The maximum permissible width of a vehicle for use on public roads in large parts of Europe is 3 m. The width of the soil tillage implement in the transport position is preferably at most the maximum permissible road transport width, in particular 3 m.

[0043] In a further preferred embodiment, the adjustment mechanism is designed to optionally adjust the vertical position of the soil preparation unit using a spring mechanism, in particular to avoid exceeding a permissible road transport height in the transport position. The maximum permissible road transport height in large parts of Europe is 4 m. In a preferred embodiment, the adjustment mechanism is designed to adjust the vertical position of the soil preparation unit such that the transport height is at most the maximum permissible road transport height, in particular 4 m.

[0044] Preferably, the soil tillage unit of the soil tillage implement, which has steering rods, carries the soil tillage tools on at least three transverse frames that extend to a working width. An adjustment mechanism is provided for at least two of the transverse frames, by means of which a soil post-processing unit is attached to the respective transverse frame and which each has the first steering rod and the second steering rod.

[0045] For a soil tillage unit with at least three cross frames extending to a working width, if only a single post-cultivation unit is available, it would have to be dimensioned to cover the entire working width. A correspondingly wide post-cultivation unit would require, firstly, an adjustment mechanism capable of moving such a large post-cultivation unit; secondly, at a given angle of inclination, the adjusted post-cultivation unit would increase the length of the soil tillage implement. It is therefore advantageous to provide separate post-cultivation units for at least the two outer cross frames, each with its own adjustment mechanism and together complementing the working width.

[0046] In the advantageous embodiment described above, in which the soil tillage implement can be folded into a transport position, the two outer cross frames of the soil tillage unit can then preferably be brought into a transport position, in which the cross frames and their associated soil post-processing units then extend essentially vertically. In this particularly advantageous embodiment, both a wide working width and a narrow transport width can be ensured.

[0047] Preferably, the soil post-processing unit further comprises a guide tool, in particular a disc coulter and / or a system, which can preferably be brought into interaction with the soil in order to influence the lateral traction force, ie to increase or decrease it.

[0048] If, for example, the lateral force exerted by the soil preparation unit is insufficient to ensure straight travel of the soil cultivation implement, an increased force can be applied by additional guide tools in the preferred embodiment. Particularly preferably, these additional guide tools are not permanently in contact with the soil, but can be used only when needed. SHORT DESCRIPTION OF THE FIGURES

[0049] Fig. 1 shows a top view of a full-turn parallel plough in left-turning working position with a packer roller as an example of a preferred soil cultivation device. Fig. 2 shows a top view of the soil tillage implement from Fig. 1 with the full-turn parallel plough in right-turning working position. Fig. 3 shows another top view of the soil tillage implement from Fig. 2 . Fig. 4 shows a side view of the soil tillage implement from Fig. 1 . Fig. 5 shows a side view of another embodiment of a soil tillage device in a transport position. WAYS OF IMPLEMENTING THE INVENTION

[0050] Fig. 1 shows a plan view of a soil tillage implement 1 with a soil tillage unit 10, namely a full-turn parallel plough, with a soil tillage implement frame 60, to which a first transverse frame 11 and a second transverse frame 12 are each rotatably mounted via a turning axis. The transverse frames 11, 12 can be rotated separately, independently of one another, about their turning axis essentially by 180°. In a first working position, the transverse frames 11, 12 thus extend essentially transversely to a working direction A of the soil tillage unit 10 and essentially parallel to the soil to be tilled, which extends parallel to the drawing plane of the Fig. 1 below the soil tillage implement 1.

[0051] In a second working position, the cross frames 11, 12 are rotated by 180° relative to the first working position. The cross frames 11, 12 carry plough bodies as examples of soil cultivation tools 13. The plough bodies include both left-turning and right-turning plough bodies, and a left-turning and a right-turning plough body form a plough body pair. In the first working position of the soil cultivation unit 10, only the left-turning plough bodies interact with the soil, while in the second working position, only the right-turning plough bodies interact. Fig. 1 The working position of the soil tillage unit 10 shown is the left-turning working position, d.h. A soil beam picked up by a plough body is deposited on the ground further to the left of its original position, as seen in working direction A. The leftmost plough body deposits its soil beam even outside the working width of the soil tillage unit 10 in a left side area B. This interaction of the plough body with the soil, which leads to a movement of the soil beam to the left, causes a lateral pull of the soil tillage unit 10 to the right in working direction A.

[0052] The soil tillage implement 1 also has a hitch 30 that is connected to the soil tillage implement frame 60. The hitch 30 extends in a central area from the soil tillage implement frame 60 to the rear. The hitch 30 projects over and spans the plough bodies like a bridge. Fig. 1 In the plan view shown, the hitch 30 appears substantially T-shaped, with a first crossbeam 33 and a second crossbeam 34, or a single continuous crossbeam, extending to a free end on either side of a longitudinal member 35 of the hitch 30 behind the plough bodies transversely to the working direction A, i.e., parallel to the soil tillage implement frame 60. A soil tillage unit attachment 31 is located at the free end of the first crossbeam 33, and a soil tillage unit attachment 32 is located at the free end of the second crossbeam 34.

[0053] In the Fig. 1 In the embodiment shown, the soil preparation unit 20 is designed as a packer roller. This is located behind the plough bodies. During soil preparation, the packer roller rotates about a rotational axis R. Soil preparation unit attachments 21 and 22 are located on a transverse frame 23 of the packer roller, which runs essentially parallel to the rotational axis R.

[0054] In the illustrated left-turning working position of the full-turn parallel plough, the packer roller is set at a left angle of attack α1 relative to the working direction A by means of an adjustment mechanism 40. The rotation axis R is therefore not perpendicular to the working direction A. The adjustment mechanism 40 has a first steering rod 41 and a second steering rod 42, both of which have the same length. One end of the steering rod 41 is pivotally connected to the first crossbeam 33 by means of the soil tillage unit attachment 31, while the other end of the steering rod 41 is pivotally connected to the packer roller by means of the soil preparation unit attachment 21. One end of the steering rod 42 is pivotally connected to the first crossbeam 34 by means of the soil tillage unit attachment 32, while the other end of the steering rod 42 is pivotally connected to the packer roller by means of the soil preparation unit attachment 22.In the configuration shown, the packer roller, i.e., the soil preparation unit 20, is attached to the full-turn parallel plough, i.e., the soil preparation unit 10, with the two steering rods 41, 42 so that it is located behind the plough bodies, i.e., the soil preparation tools 13. By moving the steering rods 41, 42, the packer roller can be pivoted and guided.

[0055] The design of the adjustment mechanism 40 by means of two steering rods 41, 42 makes it possible to adjust the packer roller and at the same time to offset it laterally so that one side of the packer roller projects beyond the plough body to the left in the left side area B, i.e., projects laterally beyond the working width of the soil tillage tools 13. The packer roller is therefore not arranged in alignment with the soil tillage unit 10. This ensures that a soil log worked by the leftmost plough body and turned to the left, which is essentially deposited in the left side area B to the left of the plough body, is grasped by the packer roller for further processing, e.g., reconsolidation.

[0056] In the Fig. 1 In the embodiment shown, the soil tillage unit attachments 31, 32 are provided on the hitch 30, which extends rearward over the soil tillage tools 13. However, other embodiments are also conceivable in which the two soil tillage unit attachments 31, 32 are arranged on two separate hitches that extend substantially vertically upwards at the two ends of the soil tillage implement frame 60. In such an embodiment, the steering rods 41, 42 then span the soil tillage tools 13. However, other embodiments are also conceivable in which the turning axes of the two transverse frames 11, 12 extend so far rearward that they have a free end behind the soil tillage tools 13. The soil tillage unit attachments 31, 32 can then be provided at these free ends, i.e. the turning axes simultaneously assume the function of a hitch.

[0057] Fig. 2 shows a plan view of the soil tillage implement 1 described above in a right-handed working position. Compared to the left-handed working position, the cross frames 11 and 12 are now rotated by 180° about their turning axis running parallel to the working direction A, which means that the right-handed working position of the plough bodies is now used to cultivate the soil. In addition, the packer roller with the adjustment mechanism 40 is adjusted by a right angle of attack α2 relative to the working direction A. Although this angle is the same as the angle of attack α1, the deflection direction now points to the right. The rotation axis R is therefore rotated clockwise by the angle α2 relative to a perpendicular to the working direction A. At the same time, the packer roller is offset to the right side of the soil tillage unit 10, i.e. the full-turn parallel plough.This ensures that the packer roller, in the right-hand working position of the full-turn parallel plough, also passes over and reworks a right-hand side area C to the right of the plough body, e.g. reconsolidates, into which a plough body arranged furthest to the right deposits the soil beam it has worked and turned to the right.

[0058] Because the rotational axis R of the packer roller is not perpendicular to the working direction A, the packer roller exerts a lateral pulling force on the soil tillage unit 10 during operation, as illustrated below using the example of the left-turning working position. A similar consideration applies to the right-turning working position.

[0059] The left-turning working position means that the soil tillage tools 13 of the soil tillage unit 10 turn the soil to the left, which leads to a lateral pull of the soil tillage unit 10 to the right. In the left-turning working position from Fig. 1 the soil preparation unit 20, in this case the packer roller, is set at an angle of attack α1 to the left relative to the working direction A, which, due to its interaction with the soil, leads to a lateral pulling force directed to the left. In other words, the full-turn parallel plough pulls the soil cultivation implement 1 to the right, while the packer roller pulls the soil cultivation implement 1 to the left. The magnitude of the lateral pulling force of the soil preparation unit 20 can be adjusted within certain limits via the magnitude of the angle of attack α1 and via the force with which the soil preparation unit 20 interacts with the soil. With a suitable selection of the angle of attack, the packer roller can ensure that the soil cultivation implement 1 runs straight ahead.

[0060] The steering rods 41 and 42 are on the soil tillage implement 1, which is Fig. 1 and Fig. 2 shown, arranged so that they diverge in the working direction A. This means that the distance between the two handlebars 41 and 42 increases towards the front. In other words, as shown in Fig. 2 As shown, a first attachment distance W1 between the soil cultivation unit attachments 31 and 32, which corresponds to the distance between the front ends of the steering rods 41 and 42, is greater than a second attachment distance W2 between the soil post-processing unit attachments 21 and 22, which corresponds to the distance between the rear ends of the steering rods 41 and 42. The lengths of the steering rods 41 and 42 are the same in this embodiment, so that the first and second soil cultivation unit attachments 31, 32 and the first and second soil post-processing unit attachments 21 and 22 span a steering trapezoid, in particular in a neutral position of the packer roller, in which the rotation axis R is perpendicular to the working direction A.

[0061] This design of the steering rods 41 and 42 ensures that the adjustment mechanism 40 simultaneously moves the packer roller to one side of the soil tillage implement 1 and adjusts it at an angle of attack in the same direction.

[0062] To enable adjustment of the packer roller, the adjustment mechanism 40 has a hydraulic cylinder 43. This is connected at a first end via a joint to the second steering rod 42 and at a second, other end via another joint to one or both of the crossbeams 33, 34.

[0063] In the Fig. 1 In the left-turning working position of the soil tillage implement 1 shown, the hydraulic cylinder 43 is in a first, extended position, which results in the packer roller being displaced and positioned to the left. This first position corresponds to a first end stop with an angle of attack α1. The lateral traction force exerted by the packer roller is transmitted to the hitch 30 by the positioning mechanism 40.

[0064] In the Fig. 2 In the working position of the soil tillage implement 1 shown, the hydraulic cylinder 43 is in a second, retracted position, which results in the packer roller being displaced and adjusted to the right. This second position corresponds to a second end stop with an angle of attack α2. The lateral traction force exerted by the packer roller is also transmitted to the hitch 30 by the adjustment mechanism 40 in the second position.

[0065] However, the first and second end stops do not necessarily have to correspond to the extended or retracted position of the hydraulic cylinder 43; intermediate positions can also be defined as the working position if necessary. The angles of attack α1, α2 can be adjusted by adjusting the first and second end stops.

[0066] However, the angle of attack can also be adjusted by changing the geometry of the steering trapezoid spanned by the first and second soil tillage unit attachments 31 and 32 and by the first and second soil post-treatment unit attachments 21 and 22, for example by changing the lengths of the first and second steering rods 41, 42.

[0067] It is also conceivable to provide not only one hydraulic cylinder 43 connected to the second steering rod 42, but also a second hydraulic cylinder connected to the first steering rod 41. This ensures a better and more even distribution of force to the steering rods 41, 42 and allows for more force to be applied overall with the same basic design.

[0068] Fig. 3 shows the above-described soil tillage implement 1 in a further right-turning working position. In comparison to the right-turning working position in Fig. 2 the second mounting distance W2 between the first soil processing unit mounting 21 and the second soil processing unit mounting 22 is larger and thus closer to the first mounting distance W1. In other words, the steering trapezoid formed by the first and second soil processing unit mountings 31 and 32 and the first and second soil processing unit mountings 21 and 22 approaches Fig. 2 a parallelogram. The changed geometry of the steering trapezoid results in the angle of attack α2 being smaller than in the Fig. 2 shown setting, although the packer roller is offset laterally by a greater distance.

[0069] Fig. 4 shows the soil tillage implement 1 from Fig. 1 in a side view. In Fig. 4 The bridge-shaped hitch 30, to which the packer roller is attached behind the plough bodies, is clearly visible. The full-turn parallel plough is in the right-hand working position, ie the right-hand soil tillage tools 13 are arranged for working the soil. In addition, the packer roller is in Fig. 4 shifted in the direction of view and positioned opposite to it, ie the rotation axis R of the packer roller is not exactly perpendicular to the drawing plane.

[0070] The packer roller is attached to the hitch 30 of the soil tillage implement 1 by means of the adjustment mechanism 40. The left steering rod 42, which is pivotally attached to the soil tillage unit attachment 32, can be seen as part of the adjustment mechanism 40. The steering rod 42 is constructed in several parts and comprises an upper steering rod leg 51, a lower steering rod leg 52, a front steering rod leg 53, and a rear steering rod leg 54. The front steering rod leg 53 and the rear steering rod leg 54 are each rotatably connected at one of their two ends to the upper steering rod leg 51 and the lower steering rod leg 52, respectively. The steering rod legs 51, 52, 53, 54 thus form the legs of a parallelogram height guide 50. By means of the parallelogram height guide 50 it is possible to adjust the height of the packer roller relative to the height of the plough bodies.During soil cultivation, the packer roller applies a portion of the weight of the soil tillage implement 1 to the soil. The distribution of this weight between the soil preparation unit 20, the soil tillage tools 13, and a tractor (not shown) connected to the soil tillage implement 1 can be influenced and adjusted using this parallelogram height guide 50. This also allows the lateral traction force that can be applied to the soil tillage implement 1 by the soil preparation unit 20 to be influenced and adjusted.

[0071] Several rotating disc coulters 45 are attached to the packer roller to enhance the interaction of the soil preparation unit 20 with the soil, particularly the lateral traction that can be applied. The disc coulters 45 each rotate about their own rotational axes S, which are arranged parallel to the rotational axis R of the packer roller. If necessary, the rotational axes S can also be further adjusted relative to the rotational axis R.

[0072] In Fig. 4 Also shown is a packer roller attachment 46, which glides through the soil during cultivation. The attachment 46 is set at the same angle to the working direction A as the packer roller, thereby increasing the lateral traction exerted by the packer roller on the soil cultivation implement 1. The attachment 46 is connected to the packer roller via a folding joint 47 such that the attachment 46 can be raised from the soil if necessary. Thus, the folding attachment 46 can be used to selectively increase interaction with the soil, e.g., lateral traction, if necessary.

[0073] Fig. 5 shows a further embodiment of a soil tillage implement 1 in a transport position. Identical and corresponding elements of the soil tillage implement 1 from Fig. 5 and that of one of the remaining figures are designated by the same reference numerals where appropriate. The soil tillage unit 10, also in this embodiment a full-turn parallel plough, has a first transverse frame 111, which is carried by a first boom 61. Plough bodies as soil tillage tools 13 are mounted in a row on the first transverse frame 111. The first boom 61 is hingedly connected to a soil tillage implement frame 60 via a first lifting axle U1. The first boom 61 can thus be lowered downwards and raised upwards. Fig. 5 In the transport position shown, the boom 61 is raised such that the first transverse frame 111 extends substantially perpendicular to the ground. The soil tillage unit 10 of Fig. 5 also has a second transverse frame 112, which extends perpendicular to the plane of the drawing of Fig. 5 and also carries the plough body. This second cross frame 112 is shown in Fig. 5 In contrast to the first transverse frame 111, the embodiment shown cannot be lifted upwards into its own transport position.

[0074] In the Fig. 5 In the illustration shown, the first transverse frame 111 is arranged on the right side of the soil tillage implement 1, as seen in the working direction A. It is preferred that a corresponding first transverse frame (not shown) is also arranged on the left side of the soil tillage implement 1.

[0075] A soil post-processing unit 20, also a packer roller in this embodiment, is attached to a towing device 30 with a second boom 62. The second boom 62 is attached to the towing device 30 at one end so as to be rotatable about a second lifting axis U2 and carries a crossbeam 133 mounted on its other end so as to be rotatable. The packer roller is attached to the crossbeam 133 in the manner described in more detail below. With the second boom 62, the crossbeam 133 can be moved from a working position of the soil cultivation device 1 (not shown here), in which it is essentially parallel to the ground, ie in Fig. 5 perpendicular to the plane of the drawing, extends into the Fig. 5 shown transport position, in which it extends substantially perpendicular to the ground. Another foldable second boom (not shown), mounted on the left side of the hitch 30, carries another packer roller (not shown) in a similar manner.

[0076] The crossbeam 133 has a first tillage unit attachment 131 at one free end and a second tillage unit attachment 132 at its other free end. One end of a first steering rod 41 is pivotally attached to the tillage unit attachment 131, and one end of a second steering rod 42 is pivotally attached to the tillage unit attachment 132. The other ends of these steering rods 41 and 42 are pivotally attached to the tillage unit attachments 21 and 22, respectively, so that the packer roller is supported by the steering rods 41, 42.

[0077] The alignment of the first and second steering rods 41, 42 determines in the Fig. 5 In the transport position shown, a transport height H of the soil processing unit 20 and thus also of the soil processing device 1, which can be set by the adjustment mechanism 40 to be lower than a permissible road transport height, as far as this is possible due to the dimensions of the soil processing unit 10. With the help of the adjustment mechanism 40, the soil processing unit 20 is lowered as far as possible in the transport position. Fig. 5 For this purpose, the hydraulic cylinder 43 of the adjustment mechanism 40 is brought into a fully extended position for the packer roller shown. For the additional packer roller (not shown), which is carried by the foldable second boom (not shown) on the left side of the soil tillage implement 1 and for which the adjustment mechanism is designed analogously, i.e. for which the hydraulic cylinder is also attached to the left steering rod 42, which becomes the upper steering rod in the transport position, the hydraulic cylinder is fully retracted in the transport position in order to lower the packer roller as far as possible.

[0078] In the Fig. 5 In the transport position shown, a deviation of the trapezoidal shape from a parallelogram leads to an inclination angle of the packer roller relative to the vertical. Preferably, this inclination angle can be set to zero by adjusting the distance between the soil cultivation unit attachments 21, 22. The soil cultivation unit attachments 131, 132 and the soil post-processing unit attachments 21, 22 then span a parallelogram, which in Fig. 5 but is not shown. LIST OF REFERENCE SYMBOLS

[0079] 1 Soil tillage implement 10 Soil tillage unit 11, 111 First cross frame 12, 112 Second cross frame 13 Soil tillage tools 20 Soil tillage unit 21 First soil tillage unit attachment 22 Second soil tillage unit attachment 23 Packer roller cross frame 30 Hitch 31, 131 First soil tillage unit attachment 32, 132 Second soil tillage unit attachment 33 First cross beam 34 Second cross beam 35 Longitudinal member 40 Adjustment mechanism 41 First steering rod 42 Second steering rod 43 Hydraulic cylinder 45 Disc coulters 46 Attachment 47 Folding joint 50 Parallelogram height guide 51 Upper steering rod leg 52 Lower steering rod leg 53 Front steering rod leg 54Rear steering rod leg 60Soil tillage implement frame 61First boom 62Second boom 133Crossbar AWorking direction Indicator Side area CRear side area R,SRotation axis TTransport height U1first lifting axis U2second lifting axis W1first mounting distance W2second mounting distance α1, α2angle of attack,

Claims

1. A soil cultivation implement (1) having a soil cultivation unit (10) for cultivating a soil with soil cultivation tools (13) along a working direction (A), which is configured for carrying out in a first working position a left-turning cultivation of the soil and in a second working position a right-turning cultivation of the soil, wherein on the soil cultivation unit a soil reconsolidation unit (20) is attached in such a manner that the soil reconsolidation unit is arranged in the working direction behind the soil cultivation unit, characterised in that the soil reconsolidation unit is attached by means of a pivotable setting mechanism (40), wherein through the setting mechanism the soil reconsolidation unit with respect to the working direction can be laterally offset and can be set at a pitch angle (α1, α2) relative to the working direction on both sides in order to exert an adjustable side pulling force on the soil cultivation implement through interaction with the soil.

2. The soil cultivation implement (1) according to Claim 1, wherein the setting mechanism (40) comprises a first steering rod (41) with a first steering rod length and a second steering rod (42) with a second steering rod length, which connect the soil reconsolidation unit (20) and the soil cultivation unit with one another, wherein the first steering rod extends between a first soil cultivation unit attachment (31, 131) on the soil cultivation unit (10) and a first soil reconsolidation unit attachment (21) on the soil reconsolidation unit (20) and the second steering rod extends between a second soil cultivation unit attachment (32, 132) on the soil cultivation unit and a second soil reconsolidation unit attachment (22) on the soil reconsolidation unit, wherein a) the first steering rod and the second steering rod diverge in the working direction (A), or b) the first steering rod and the second steering rod run parallel to one another and the first steering rod length and / or the second steering rod length is adjustable.

3. The soil cultivation implement (1) according to Claim 2, wherein the first soil reconsolidation unit attachment (21) and the second soil reconsolidation unit attachment (22) is arranged in the working direction (A) on the soil reconsolidation unit (20) so that the soil reconsolidation unit is situated for the greatest part in working direction before or behind the first soil reconsolidation unit attachment and the second soil reconsolidation unit attachment.

4. The soil cultivation implement (1) according to any one of the Claims 1 to 3, wherein the soil cultivation unit (10) is a plough, preferably a reversible plough, particularly preferably a full-rotation plough, most preferably a full-rotation parallel plough, wherein the soil cultivation tools (13) are plough bodies.

5. The soil cultivation implement (1) according to any one of the Claims 1 to 4, wherein the soil reconsolidation unit (20) is designed to bring about a reconsolidation, flattening or seed application, and in particular is a packer roller, bow roller, knife roller, depth guiding roller, circular harrow, knife rail, tine rail, planing rail or sowing rail.

6. The soil cultivation implement (1) according to any one of the Claims 1 to 5, wherein a working depth of the soil cultivation tools (10), is adjustable, preferentially relative to the soil reconsolidation unit (20), wherein preferably the setting mechanism (40) comprises a height control, in particular a parallelogram height control (50) in order to bring about a setting and / or changing of the working depth of the soil cultivation tools relative to the soil reconsolidation unit (20) irrespective of the set pitch angle (α1, α2).

7. The soil cultivation implement (1) according to any one of the Claims 1 to 6, wherein the soil cultivation implement comprises a first end stop and a second end stop for the setting mechanism (40), through which the respective pitch angle (α1, α2) is pre-settable to the left and right based on the working direction (A), wherein the pitch angle can be changed over between right and left in particular by changing over the setting mechanism between the first end stop and the second end stop.

8. The soil cultivation implement (1) according to Claim 1 or Claim 2 and any one of the Claims 3 to 7, wherein the pitch angle (α1, α2) is variably adjustable, in particular in that a first attachment distance (W1) between the first soil cultivation unit attachment (31, 131) and the second soil cultivation unit attachment (32, 132) is variably adjustable, in particular in that a second attachment distance (W2) between the first soil reconsolidation unit attachment (21) and the second soil reconsolidation unit attachment (22) is variably adjustable and / or in particular in that the first steering rod length and / or the second steering rod length are / is variably adjustable.

9. The soil cultivation implement (1) according to Claim 8, wherein the pitch angle (α1, α2) is variably adjustable mechanically by fixed detent positions, mechanically by spring preload, by an actuator, through control by an operator and / or hydraulically by automatic control.

10. The soil cultivation implement (1) according to any one of the Claims 1 to 9, wherein the setting mechanism (40) is configured to bring about, via a positive drive or a sequence control, a setting of the soil reconsolidation unit (20) based on a change-over of the soil cultivation unit (10) between the first working position and the second working position.

11. The soil cultivation implement (1) according to any one of the Claims 1 to 10, which is foldable out of at least one of the working positions into a transport position, in which the soil reconsolidation unit (20) extends mainly vertically and in which it has a transport height (H), wherein the setting mechanism (40) is preferably configured for setting a vertical position of the soil reconsolidation unit with respect to a soil cultivation implement frame (60), optionally by means of a spring mechanism, so that the transport height (H) is not greater than a permissible road transport height.

12. The soil cultivation implement (1) according to Claim 1 or Claim 2 and one of the Claims 3 to 11, wherein the soil cultivation unit (10) carries the soil cultivation tools on at least three cross frames, which together extend to a working width, wherein at least for the extremely right cross frame and the extremely left cross frame a setting mechanism (40) is provided, by means of which a soil reconsolidation unit (20) each is attached to the respective cross frame and which in each case comprises the first steering rod (41) and the second steering rod (42).

13. The soil cultivation implement (1) according to any one of the Claims 1 to 12, wherein the soil reconsolidation unit (20) further includes a guiding tool, in particular a disc coulter (45) and / or a mouldboard (46), which preferably can be brought to interact with the soil in order to influence the side pulling force.

14. The soil cultivation implement (1) according to any one of the Claims 1 to 13, wherein before and / or behind the soil reconsolidation unit (20) a distribution device for application of solid and / or liquid substances, in particular fertilisers and / or seeds, is arranged.