Soil cultivation device

Abstract

Soil cultivation device (1), in particular for attachment to an agricultural tractor, comprising a machine frame (2) on which a first main soil cultivation device (3) is arranged so as to be rotatable about a first axis of rotation (7), and a secondary machine frame (4) on which a secondary soil cultivation device (5) is arranged, wherein the soil cultivation machine (1) comprises a working depth adjustment device (6), characterized in that the working depth adjustment device (6) is provided and designed to adjust a working depth (8) of the first main soil cultivation device (3) by rotating the first main soil cultivation device (3) about the first axis of rotation (7), wherein the secondary machine frame (4) is mounted in a spring-loaded and / or damped manner relative to the machine frame (2) by means of a first spring and / or damping device (9).

Description

The invention relates to a soil cultivation device, in particular for attachment to an agricultural tractor, comprising a machine frame on which a first main soil cultivation implement is arranged rotatably about a first axis of rotation, and a secondary machine frame on which a secondary soil cultivation implement is arranged, wherein the soil cultivation machine comprises a working depth adjustment device.Various soil-working machines are known from the prior art, which are designed as mentioned at the beginning. Known as soil-working machines are, for example, so-called disc harrows or short disc harrows.In such disc harrows, a field surface is first loosened by means of so-called saw discs or cutting discs, which correspond to the main floor processing device, and subsequently resolidified after processing with the discs by means of a so-called packer roller, which corresponds to the sub floor processing device.In addition to a resolidification, the packer roller also serves to influence a depth setting of the saw discs, wherein for this purpose the arrangement of the packer roller with respect to the auxiliary machine frame can be changed mechanically and manually and / or automatically.Packer rollers of this type are known in a wide variety of embodiments.Such ground treatment machines, for example disc harrows, in which the packer roller is additionally used as a depth setting of the main ground treatment devices, sometimes have the disadvantage that these can allow the main ground treatment devices to project into the ground to different depths during the depth setting, since the packer roller is arranged at the rear end of the ground treatment machine and on the other hand are pulled, for example, by means of a drawbar, so that the machine frame and accordingly also the main ground treatment devices are located at different heights, since the machine frame is no longer arranged horizontally.Soil-working devices sometimes have the disadvantage that they tend to swing open and thus jump relative to the ground, as a result of which the agricultural soil is treated unevenly. Causes of this swinging up can be, for example, corresponding ground conditions such as larger stones or lumps of earth, incorrect machine settings, non-adapted travel speeds, but also the general structure of the machine itself.The document DE 10 2006 004 452 A1 is known from the prior art. This document discloses a grooved sowing machine with a seed store which is connected to sowing elements. A grooved roller is arranged running in front of the sowing elements. The grooved roller serves for soil solidification and introduction of sowing grooves into the soil, into which the seed can be deposited by the sowing elements. Furthermore, a post-consolidation roller is provided which is arranged after the sowing elements. The leading grooved roller and the trailing post-consolidation roller are variable in height relative to each other. Furthermore, by means of an associated working depth adjustment device, different working depths of the grooved roller relative to the post-consolidation roller and thus different seed groove depths can be adjusted. By means of the working depth adjustment device, different working positions of the leading grooved roller relative to the trailing post-consolidation roller can be adjusted, in which the grooved roller presses into the ground to different depths and thus seed grooves of different depths are formed. By the working depth adjusting device and the variable height position of the grooved roller relative to the post-consolidation roller, the lifting force and the weight of the sowing machine are distributed differently between the grooved roller and the post-consolidation roller, respectively.Furthermore, the document DE 20 2018 105 099 U1 is known. A soil working device, in particular in the form of a towed crop rubber, is shown. The soil-working device comprises a machine frame to which a plurality of soil-working tools, in particular rubber tines, are attached in preferably a plurality of rows, and a chassis which is attached to the machine frame between and / or adjacent to the soil-working tools. The chassis has a ground working position for depth guidance of the ground working tools. Furthermore, loosening tools are provided behind the chassis in its travel lane in the direction of travel for loosening the ground in the travel lane compacted by the chassis.It is therefore an object of the present invention to provide a soil working device which overcomes the disadvantages of the prior art.This object is achieved by a soil working device having the features of claim 1. Advantageous embodiments of the invention are found in the dependent claims.The core idea of the invention is to provide a soil cultivation device, in particular for attachment to an agricultural tractor, comprising a machine frame, on which a first main soil cultivation device is arranged rotatably about a first axis of rotation, and an auxiliary machine frame, on which an auxiliary soil cultivation device is arranged, wherein the soil cultivation machine comprises a working depth setting device, wherein the working depth setting device is provided and configured to set a working depth of the first main soil cultivation device by rotating the first main soil cultivation device about the first axis of rotation, wherein preferably the auxiliary machine frame is mounted in a sprung and / or damped manner with respect to the machine frame by means of a first spring and / or damping device.It can particularly preferably be provided that a plurality of main floor processing devices are provided, that is to say a first main floor processing device, a second main floor processing device, etc., wherein the number can be variable.Particularly preferably, the auxiliary machine frame is mounted rotatably with respect to the machine frame by means of the first spring and / or damping device, such that, when an external force acts on the auxiliary machine frame with auxiliary floor processing device, a suspension and / or damping of the auxiliary machine frame is caused by the rotation. For example, spring and / or damping elements of the first spring and / or damping device are actuated, for example deformed, so that a counterforce to the external force can be generated, wherein the counterforce corresponds to a springing and / or damping.Particularly preferably, the position of the auxiliary machine frame is substantially constant with respect to the machine frame or relative to the machine frame, except for spring and / or damping movements of the auxiliary machine frame with respect to the machine frame.The floor processing device is attached to the tractor, for example, and is coupled to a hydraulic supply system of the tractor.By fixing the first main floor processing device to the machine frame and the auxiliary machine frame and accordingly to the auxiliary floor processing device, a position of the main floor processing device relative to the machine frame can be adjusted, so that the depth or a working depth of the main floor processing device can be adjusted.It is particularly preferably provided that the auxiliary floor processing device is substantially unchanged in its position with respect to the machine frame. A rotation of the auxiliary machine frame relative to the machine frame takes place only when external forces, for example when driving over obstacles such as stones, hills or the like, act on the auxiliary floor processing device and correspondingly deflect the latter. The working depth of the soil cultivation machine is preferably adjusted by means of the working depth adjustment device exclusively by rotating the first main soil cultivation device about the first axis of rotation, or exclusively by rotating a plurality of existing main soil cultivation devices.It is particularly preferably provided that no adjustment possibility is provided with respect to the working depth of the sub-floor processing device, that is to say that only a displacement or rotation of the main floor processing devices leads to a change in the working depth of the main floor processing devices or of the floor processing device.Particularly preferably, the auxiliary machine frame and accordingly the auxiliary floor processing device is prestressed by means of the first spring and / or damping device, i.e. is loaded with a prestress.According to a particularly preferred embodiment, it is provided that the working depth adjusting device is connected on the one hand to the machine frame and on the other hand to the first main floor processing device or the main floor processing devices.Particularly preferably, the working depth adjusting device is connected directly to the machine frame and directly to the first main floor processing device or the main floor processing devices. There is no operative connection between the working depth setting device and the auxiliary machine frame and corresponding to the auxiliary floor processing device, that is to say that an actuation of the working depth setting device has no influence or no effect on the auxiliary machine frame and corresponding to the auxiliary floor processing device.According to a further preferred embodiment, the main floor processing device or the main floor processing devices can be displaced with respect to the machine frame and with respect to the auxiliary machine frame by means of the working depth adjustment device.It is preferably provided that the auxiliary machine frame essentially holds its position with respect to the machine frame, so that the auxiliary machine frame is not suitable for working depth adjustment.When the first main floor processing device rotates relative to the machine frame, the main floor processing device or the main floor processing devices are correspondingly displaced relative to the machine frame and accordingly also relative to the auxiliary machine frame with auxiliary floor processing device, whereby the working depth can be adjusted.In general, the working depth corresponds to the difference between a contact point of the sub-floor processing device and a contact point of the main floor processing device or the contact points of the main floor processing devices, wherein a contact point is preferably to be understood as the point of the respective device which is in contact with a ground, for example an agricultural surface.According to a further and preferred embodiment, it is provided that the auxiliary machine frame and the machine frame are arranged rigidly with respect to one another, apart from spring and / or damping movements of the auxiliary machine frame with respect to the machine frame.According to a particularly preferred embodiment, it is provided that the first spring and / or damping device comprises at least one spring and / or damping element, which is one selected from the group comprising an elastomer element, a gas pressure cylinder, a helical compression spring, or any combination thereof. More preferably, the elastomer element is a rubber cord element.The spring and / or damping element is preferably designed to be elastically deformable, wherein the spring and / or damping element is preferably made at least partially of an elastomer.By means of a spring and / or damping device configured in this way, having at least one spring and / or damping element which is designed to be elastically deformable, the prestress of the spring and / or damping device can also be adjusted in a particularly simple manner.This can ensure that the spring and / or damping element undergoes deformation during a rotation, as a result of which the characteristic curves of the spring and / or damping element can be changed.In this case, according to a further preferred embodiment, it can also be provided already during the installation of the spring and / or damping device to introduce a certain prestress into the system, namely by a deformation of the spring and / or damping element during the installation.According to a preferred embodiment, it can therefore be provided that the at least one spring and / or damping element is undeformed in a non-installed state and has a constant cross section or is frustoconical or conical, and wherein the at least one spring and / or damping element is deformed in a installed state.The prestress depends on the type of deformation, wherein the deformation is dependent on the dimensions of the spring and / or damping element and the available space available. Particularly preferably, the spring and / or damping element is circular in cross section in the non-deformed state, and is also elongated. Elongate is to be understood here in such a way that one direction of extent is significantly greater than the two further directions of extent.Particularly preferably, further possibly provided spring and / or damping devices can also have embodiments such as the first spring and / or damping device, wherein the spring and / or damping devices can be configured differently from one another.According to a further preferred embodiment, it is provided that the first main floor processing device comprises a first carrier rail with at least one processing unit arranged on the first carrier rail, wherein the working depth adjustment device is connected to the first carrier rail. Particularly preferably, the first carrier rail is rigid, that is to say that the first carrier rail remains substantially unchanged even when a force is applied.Preferably, the first carrier rail is arranged extending in a width direction. Preferably, the first carrier rail is formed from a square tube. It can further preferably be provided that the first carrier rail is formed from a plurality of sections.Particularly preferably, a plurality of processing units are arranged on the first carrier rail, wherein the processing units are preferably arranged at regular distances from one another.According to a further preferred embodiment, it is provided that the at least one machining unit is spring-mounted and / or dampedly connected to the first carrier rail by means of a second spring and / or damping device.It is particularly preferably provided that each processing unit is connected to the first carrier rail by means of a spring and / or damping device. Preferably, the second spring and / or damping devices are substantially identical.This makes it possible for the respective processing units to be able to execute a compensating movement, for example when blocks or the like are traveled over by the processing units. This makes it possible to minimize damage and to be able to ensure a uniform running of the soil working device.Particularly preferably, the working depth adjusting device is directly connected to the first carrier rail, so that a rotation of the first carrier rail causes a rotation of the machining units. In this case, the machining units are preferably mounted in a sprung and / or damped manner with respect to the first carrier rail. The working depth adjusting device does not have a direct connection to the second spring and / or damping devices, but acts only directly on the first carrier rail.According to a further embodiment, it is provided that a first limiting element is provided, which is rigidly connected to the auxiliary machine frame, wherein the first limiting element is configured to limit a rotational movement of the auxiliary machine frame relative to the machine frame in at least one rotational direction.It is particularly preferably provided that the rotational movement of the auxiliary machine frame relative to the machine frame can be limited in both rotational directions.By means of the limitation, it is also possible to compensate for wear phenomena of the first spring and / or damping unit, as an example here the elastomer element which is designed as a rubber cord element may be mentioned. Over time, the characteristic curves of the rubber cord change as a result of the external influences, so that they no longer correspond to the original characteristic curves. In order to limit this effect, the limiting element can be provided.According to a further preferred embodiment, a plurality of first limiting elements can be provided, which are rigidly connected to the auxiliary machine frame in order to be able to achieve an improved limiting of the rotational movement(s).According to a further preferred embodiment, it is provided that a second main floor processing device is provided, which is arranged on the machine frame rotatably about a second axis of rotation, wherein the working depth adjustment device is provided and configured to adjust a working depth of the second main floor processing device by rotating the second main floor processing device about the second axis of rotation.According to a preferred embodiment, it is provided that the working depth adjustment device is provided and configured to simultaneously adjust the working depth of the first main soil working device and the working depth of the second main soil working device.Particularly preferably, the explanations with respect to the first main floor processing device also apply analogously individually or in combination to the second main floor processing device.According to a particularly preferred embodiment, it can be provided that the working depth adjusting device comprises an adjusting unit, which is preferably a linear drive, wherein preferably the linear drive is one selected from the group comprising a hydraulic cylinder, a pneumatic cylinder, a threaded rod drive, a roller thread drive, and an electromechanical linear drive. Of course, other configurations with regard to the adjustment unit or the linear drive are also conceivable.Particularly preferably, the adjustment unit is designed such that the adjustment unit is self-locking. Further particularly preferably, a working depth can be changed only upon actuation of the adjustment unit.According to a further preferred embodiment, it can be provided that the auxiliary machine frame has at least one carrier element running in a width direction, wherein the carrier element preferably has a fixed cross-sectional profile.Further advantageous embodiments are evident from the dependent claims.Other objects, advantages and convenience of the present invention will become apparent from the following description when taken in conjunction with the drawings. The following are shown here: FIG. 1 shows a floor processing device according to a preferred embodiment in a perspective view; FIG. 2 shows a detail of FIG. 1 in a side view; FIG. 3 shows the detail of FIG. 2 in a perspective view.In the figures, identical components are to be understood in each case with the corresponding reference numerals. For the sake of better clarity, in some figures, components may not be provided with a reference sign, which, however, have been designated elsewhere.FIG. 1 shows a floor treatment device 1 according to a preferred embodiment in its entirety in a perspective view.The soil cultivation machine 1 comprises a machine frame 2, on which a first main soil cultivation device 3 and a second main soil cultivation device 15 are arranged, and a secondary machine frame 4, on which a secondary soil cultivation device 5 is arranged, wherein the first main soil cultivation device 3 is connected to the machine frame 2 rotatably about a first axis of rotation 7 and the second main soil cultivation device 15 is connected to the machine frame 2 rotatably about a second axis of rotation 16.The sub-floor processing device 5 for resolidifying the agricultural floor is designed here as a so-called packer roller, and the main floor processing devices 3, 15 in this case comprise processing devices 22 in the form of processing disks 22, for example cutting disks or cutting disks, wherein the sub-floor processing device 4 is arranged behind the main floor processing devices 3, 15 as viewed in the longitudinal direction L. It should be noted here that the main floor processing device 3, 15 can also comprise a plurality of and / or different working tools; and likewise the auxiliary floor processing device 4 can also comprise further working tools.The soil working device 1 further comprises a drawbar device 21, by means of which the soil working device 1 can be attached to an agricultural tractor (not shown here). The drawbar device 21 is rotatably arranged on the machine frame 2. The soil-working device 1 is in the present case a towed soil-working device 1. alternatively it would also be conceivable to arrange it at the 3-point lifting hydraulics of the tractor.A working depth adjustment device 6, more preferably a plurality of working depth adjustment devices 6, can be further seen, which is connected on the one hand to the machine frame 2 and on the other hand to the first main floor processing device 3 and the second main floor processing device 15.The machine frame 2 preferably comprises a plurality of transverse frame parts 17 and longitudinal frame parts 18, which are rigidly connected to one another.FIG. 2 shows a detail of the soil working device 1 of FIG. 1, in a side view.The first main floor treatment device 3 preferably has a first carrier rail 10 which is rotatably mounted about a first axis of rotation 7 in relation to the machine frame 2, preferably by means of at least one first bearing unit 29. The second main floor treatment device 15 preferably has a second carrier rail 11 which is rotatably mounted about a second axis of rotation 16 in relation to the machine frame 2, preferably by means of at least one second bearing unit 30. Further preferably, the carrier rails 10, 11 are substantially identical. The bearing units 29, 30 are designed in such a way that they can receive the respective carrier rail 10, 11 and rotatably support it with respect to the machine frame 2.The auxiliary machine frame 4 with the auxiliary floor processing device 5 is mounted in a sprung and / or damped manner with respect to the machine frame 2 by means of a first spring and / or damping device, in particular rotatably about a third axis of rotation 31. This means that the position of the auxiliary machine frame 4 relative to the machine frame 2 is substantially the same, except for spring and / or damping movements of the auxiliary machine frame 4.Furthermore, the first main floor processing device 3 and the second main floor processing device 15 each have processing units 12 which are arranged in a sprung and / or damped manner with respect to the machine frame 2 by means of a second spring and / or damping device 12 or third spring and / or damping device 19.Preferably, the first and second spring and / or damping devices 13, 19 are substantially identical. The spring and / or damping devices 13, 19 can each be formed by a first bearing shell 29 and a second bearing shell 30, wherein the bearing shells 29, 30 can be screwed, riveted, welded or the like to one another. The shape of the bearing shells 29, 30 is variable and can be adapted to the desired requirements for use. It is likewise conceivable to use elastomer half shells which are adapted to the shape of the bearing shells 29, 30 and the respective carrier rail 10, 11. The bearing shells 29, 30 preferably comprise the respective carrier rail 10, 11, wherein spring and / or damping elements 20, 32 are arranged between the bearing shells 29, 30 and the respective carrier rail 10, 11, in the present case configured as rubber cord elements 20. The bearing half shells 29, 30 preferably form a bearing unit 33.Further preferably, bearing lever elements 34 are provided, which are rigidly arranged with a first end on a bearing unit 33, for example on at least one bearing half shell 29, 30, wherein a processing unit 12, for example a processing device 22, is arranged on a second end of the bearing lever element 34. Particularly preferably, the bearing lever element 34 can be regarded as part of the machining unit 12. The processing devices 12 are preferably connected to the respective bearing lever element 34 rotatably about an axis of rotation 23 of the processing device.The first spring and / or damping device 9 is designed analogously to the described spring and / or damping devices 13, 19, i.e. with bearing half shells 29, 30 and correspondingly arranged rubber cord elements 20, wherein the dimensioning of the elements differs. It is also conceivable that the first spring and / or damping device 9 fundamentally differs in its construction from the further spring and / or damping devices 13, 19.By means of the working depth adjustment device 6, which is connected to the machine frame 2 and to the main floor processing devices 3, 15, in particular the carrier rails 10, 11, a respective angle 24, 25 of the respective processing unit 12 can be adjusted with respect to the longitudinal direction L. In this case, a first angle 24 can be set with respect to the first main floor processing device 3 and a second angle 25 can be set with respect to the second main floor processing device 15. Preferably, the two angles 24, 25 are substantially the same and are simultaneously and preferably uniformly adjustable by means of the working depth adjusting device 6.By rotating the carrier rails 10, 11 about the respective axis of rotation 7, 16 relative to the machine frame 2, the position in the space of the main floor treatment devices 3, 15 can be adjusted, in particular viewed in the height direction H.Because the position of the auxiliary machine frame 4 relative to the machine frame 2 is substantially constant and the position of the main floor treatment devices 3, 15 relative to the machine frame 2 can be changed, a working depth 8 can be adjusted. The working depth 8 is preferably defined as a distance between a contact point 35 of the first main floor processing device 3 or a contact point 35 of the second main floor processing device 15 and a contact point 36 of the auxiliary floor processing device 5.By rotating the main floor processing devices 3, 15, the respective contact point 35 of the main floor processing devices 3, 15 can be changed, so that the working depth 8 changes accordingly, since the contact point 36 of the sub-floor processing device 5 does not change.Further preferably, at least one first limiting element 14 is provided, wherein the first limiting element 14 is rigidly connected to a carrier element 28 (not shown here), wherein the first limiting element 14 is configured to limit a rotational movement of the auxiliary machine frame 4 relative to the machine frame 2 in at least one rotational direction. Particularly preferably, the first limiting element 14 has a first limiting element part 26 and a second limiting element part 27, which can be contacted with the carrier element 28, during spring and / or damping movements. The delimiting element parts 26, 27 are preferably arranged in such a way that they are formed at least partially overlapping with the machine frame 2 as viewed in the longitudinal direction L.FIG. 3 shows the detail of the soil working device 1 of FIG. 2, in a perspective view.According to FIG. 3, the working depth adjustment device 6 is shown in more detail, wherein the working depth adjustment device 6 has an adjustment unit 37 with a first end 38 and a second end 39, wherein the first end 38 is connected to the machine frame 2 rotatably about a fourth axis of rotation 40 and the second end 39 is connected to an adjustment lever 44 rotatably about a fifth axis of rotation 41. The adjusting lever 44 further has a first end 47 and a second end 48, wherein the first end 47 is connected to a first lever 45 rotatably about a sixth axis of rotation 42 and the second end 48 is connected to a second lever 46 rotatably about a seventh axis of rotation 43. The first lever 45 is rigidly connected to the first carrier rail 29 and the second lever 46 is rigidly connected to the second carrier rail 30. The levers 45, 46 are preferably substantially identical. More preferably, the working depth adjusting means 6 is configured such that the levers 45, 46 can be moved simultaneously and uniformly, so that the carrier rails 29, 30 can also be rotated simultaneously and uniformly, whereby an adjustment of the angles 24, 25 can also be effected simultaneously.All features disclosed in the application documents are claimed as essential to the invention provided they are novel, individually or in combination, compared with the prior art.List of reference characters1 Floor processing device 2 Machine frame 3 First main floor processing device 4 Auxiliary machine frame 5 Auxiliary floor processing device 6 Working depth adjusting device 7 First axis of rotation 8 Working depth 9 First spring and / or damping device 10 First carrier rail 11 Second carrier rail 12 Processing unit 13 Second spring and / or damping device 14 First limiting element 15 Second main floor processing device 16 Second axis of rotation 17 Transverse frame part 18 Longitudinal frame part 19 Third spring and / or damping device 20 Rubber cord element 21 Drawbar device 22 Processing device / processing disk 23 Axis of rotation Processing device 24 First angle 25 Second angle 26 First limiting element part 27 Second limiting element part 28 Carrier element 29 First bearing shell 30 Second bearing shell 31 Third axis of rotation 32 Damping element 33 Bearing unit 34 Bearing lever element 35 Contact point Main floor processing device 36 Auxiliary floor processing device 37 Adjusting unit 38 First end of the adjusting unit 39 Second end of the adjusting unit 40 Fourth axis of rotation 41 Fifth axis of rotation 42 Sixth axis of rotation 43 Seventh axis of rotation 44 Adjusting lever 45 First lever 46 Second lever 47 First end of adjusting lever 48 Second end of adjusting lever U Field floor H Height direction B Width direction L Longitudinal direction

Claims

Soil cultivation device (1), in particular for attachment to an agricultural tractor, comprising a machine frame (2) on which a first main soil cultivation implement (3) is arranged rotatably about a first axis of rotation (7), and a secondary machine frame (4) on which a secondary soil cultivation implement (5) is arranged, wherein the soil cultivation machine (1) comprises a working depth setting device (6), characterized in that the working depth setting device (6) is provided and designed to set a working depth (8) of the first main soil cultivation implement (3) by rotation of the first main soil cultivation implement (3) about the first axis of rotation (7), wherein the secondary machine frame (4) is mounted in a sprung and / or damped manner with respect to the machine frame (2) by means of a first spring and / or damping device (9).Soil cultivation device (1) according to claim 1, characterised in that the working depth adjusting device (6) is connected on the one hand to the machine frame (2) and on the other hand to the first main soil cultivation device (3).Soil cultivation device (1) according to claim 1 or 2, characterised in that the main soil cultivation device (3) is displaceable relative to the machine frame (2) and relative to the auxiliary machine frame (4) by means of the working depth adjustment device (6).Floor processing device (1) according to one of claims 1 to 3, characterised in that the first main floor processing device (3) comprises a first carrier rail (10) with at least one processing unit (12) arranged on the first carrier rail (10), wherein the working depth adjusting device (6) is connected to the first carrier rail (10).Soil working device (1) according to Claim 4, characterized in that the at least one working unit (12) is connected to the carrier rail (10) in a sprung and / or damped manner by means of a second spring and / or damping device (13).Soil cultivation device (1) according to one of claims 1 to 5, characterised in that a first limiting element (14) is provided, which is rigidly connected to the auxiliary machine frame (4), wherein the first limiting element (14) is designed to limit a rotational movement of the auxiliary machine frame (4) relative to the machine frame (2) in at least one rotational direction.Soil cultivation device (1) according to one of claims 1 to 6, characterised in that a second main soil cultivation device (15) is provided, which is arranged on the machine frame (2) rotatably about a second axis of rotation (16), wherein the working depth adjustment device (6) is provided and configured to adjust a working depth (8) of the second main soil cultivation device (15) by rotating the second main soil cultivation device (15) about the second axis of rotation (16).Soil working device (1) according to claim 7, characterised in that the working depth setting device (6) is provided and designed to simultaneously set the working depth (8) of the first main soil working appliance (3) and the working depth (8) of the second main soil working appliance (15).

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