Attached soil erosion device and self-propelled work vehicle

Abstract

An attached soil erosion device, comprising: - an operation driver that can rotate around an operation axis, and - a device housing having a carrier member on which the operation driver is accommodated, wherein the device housing has a basic structure, the carrier member forms at least one section of the basic structure, the device housing further has a first side cover and a second side cover extending transversely to the operation axis, the first side cover and the second side cover respectively have a first or second soil contact section, and each soil contact section - contacts the soil during the processing of the eroded soil, and - can be accommodated to move transversely to the operation axis relative to the basic structure and pivotally move around a pivot axis. At least one side cover has a lifting member that can move transversely to the operation axis relative to the basic structure and a pivot member that can move jointly with the lifting member and pivotally move around the pivot axis relative to the lifting member, and the soil contact section of the side cover is indirectly connected to the lifting member.

Description

Technical Field

[0001] The present invention relates to an attachable soil erosion device for detachably connecting to a work vehicle. The attachable soil erosion device, hereinafter also simply referred to as "soil erosion device", comprises:

[0002] - a work drive having a driven member, wherein the driven member is configured to be coupled in a torque-transmitting manner to an erosion tool rotating during the erosion operation and to rotate about a work axis, wherein the work axis defines an axial direction extending along the work axis, a radial direction extending orthogonally to the work axis, and a circumferential direction extending around the work axis, and

[0003] - a device housing having a carrier part, on which the work drive is accommodated, wherein the device housing has a base structure, and the carrier part forms at least one section of the base structure,

[0004] wherein the device housing further has a first side cover extending transversely to the work axis and a second side cover extending transversely to the work axis and axially spaced from the first side cover, wherein the first side cover has a first soil contact section and the second side cover has a second soil contact section, and each soil contact section in the first and second soil sections

[0005] - is configured to contact the soil to be processed during the erosion soil processing of the attachable soil erosion device, and

[0006] - is accommodated so as to be movable transversely to the work axis relative to the base structure and pivotally movable about a pivot axis that encloses an angle of not more than 25° with the work axis. Background Art

[0007] Such an attachable soil erosion device is known from EP 1 222 333 B1 or from the related WO2001 / 025545A.

[0008] The side covers of this known soil erosion device are configured as one piece and are also configured as one piece with the soil contact sections. By means of a lifting pin guided in a first elongated hole of an eccentric rod of a lifting drive that can pivot relative to the base structure, the known side covers can be moved orthogonally to the work axis. The erosion depth is also set by the pivotal movement of the lifting pin. During the erosion operation, the soil contact sections of the side covers contact the soil to be processed. The erosion depth is determined by the dimension in which the erosion tool projects from the device housing with the soil contact sections.

[0009] The known side cover has a second elongated hole, and a guide pin fixed to the base structure engages into the second elongated hole. The guide pin fixed to the base structure and the lifting pin of the eccentric rod extend parallel to each other. The curved elongated holes into which the two pins are respectively inserted twist and extend relative to each other around a torsional axis parallel to the pins, whereby the two pins define the position of the substantially flat side cover relative to the base structure orthogonally to the extending direction of the two pins. The two elongated holes into which the two pins are respectively inserted are configured to bend around a common curved axis. Thus, the side cover can rotate relative to the base structure around the curved axis, wherein the possible maximum rotation angle of the rotation is preset by the length of the shortest elongated hole.

[0010] The design of the known side cover and the base structure is such that the curved axis of the elongated hole ideally coincides with the working axis. Thus, a self-propelled working vehicle carrying an attached soil-erosion device can tilt around the transverse axis during the pitching motion during soil erosion, which often occurs during such soil-erosion processes, but this pitching motion does not change the effective erosion depth of the soil-erosion device. The side cover that determines the erosion depth rotates around a pivot axis defined by the common curved axis of the two elongated holes under the action of the working vehicle tilting around the transverse axis. The closer the pivot axis is to the working axis, the smaller the influence of the pitching motion on the erosion depth.

[0011] Due to the sliding coupling of the pins and the curved elongated holes, the side cover on the known soil-erosion device relative to the base structure carrying the working drive only performs a pure rotational passive motion driven by the pitching motion of the working vehicle or performs a combined translational and rotational motion caused by the lifting drive.

[0012] Another attached soil-erosion device is known from EP 3 350 373 B1. Its side cover also has an elongated hole, and the lifting pin and the guide pin are slidably received in and guided in the elongated hole. Thus, the side cover can also change its position relative to the base structure. The difference between this soil-erosion device and the foregoing is that the guide pin of the soil-erosion device is arranged coaxially with the working axis, whereby only the elongated hole into which the lifting pin of the side cover is inserted is configured to be curved, while the elongated hole into which the guide pin is inserted is a straight elongated hole.

[0013] Another prior-art reference DE 101 05 475C1 discloses an excavator with a side cover that can only pivot around the working axis, and the side cover has a cylindrical-sector design. The only pivotable side cover pivots around a pivot axis parallel to the working axis through a sliding hoop. The sliding hoop is hinged to the support arm of the base structure of the excavator at a distance from the working axis such that it pivots only around the hoop pivot axis parallel to the working axis. The sliding hoop is coupled to the pivotable side cover through a hinge rod. The milling depth of the known excavator is achieved by defining the pivot-motion stroke of the sliding hoop. The sliding hoop and the non-pivotable side cover have a soil-contact section here. The side cover of the known excavator usually has no soil contact during soil erosion.

[0014] The soil contact section of the side shroud is subject to high wear due to its soil contact and due to its proximity to the erosion tool. During the erosion operation, the erosion tool throws away the erosive erosion particles, which are usually composed of mineral soil material, at high speed. Replacing the worn soil contact section always requires replacing the entire side shroud. Since the side shroud is usually made of steel construction, this replacement is complex and laborious, and may require the use of a crane if necessary. Summary of the Invention

[0015] Therefore, the object of the present invention is to improve this type of attached soil erosion device so that it can be applied more flexibly and maintained or repaired more simply.

[0016] This object is achieved on an attached soil erosion device of the type described at the beginning, wherein at least one of the first and second side shrouds is constructed in a multi-piece manner and has a lifting member that can be translated transversely to the working axis relative to the basic structure, and a pivot member that can move in a common translation motion with the lifting member and pivot relative to the lifting member about a pivot axis, wherein the soil contact section of the side shroud is indirectly connected to the lifting member with the pivot member arranged in between.

[0017] Due to the multi-piece construction of the side shroud, in the case where the soil contact section needs to be replaced, it is advantageously sufficient to only replace the member of the side shroud having the soil contact section, while the other members of the side shroud, which usually undergo less wear than the soil contact section, can remain on the device housing. For example, the lifting member can remain on the device housing because the soil contact section is not directly constructed on the lifting member, but only indirectly connected thereto, and the lifting member determines the setting of the erosion depth of the soil erosion device during the erosion operation by its position relative to the basic structure.

[0018] The basic construction of the attached soil erosion device is briefly explained below:

[0019] The working drive is preferably a motor with a rotating output element, especially with a driven shaft. Preferably, the working drive is a hydraulic motor. The working drive can be different and can be an electric motor or an internal combustion engine.

[0020] Usually, the working drive is supplied with drive energy by the working vehicle regardless of its physical action mode. For this purpose, the attached soil erosion device preferably has a corresponding pipeline including pipeline connectors, and the pipeline connectors can be connected to the corresponding mating connectors on the working vehicle to transmit energy. The pipeline connectors can be, for example, connectors for hydraulic pipelines or electrical pipelines.

[0021] The driven member is a member driven by an operating drive, by means of which the drive energy can be transmitted to the erosion tool. In a particularly simple case, the driven member can be a driven shaft that provides rotation for the operating drive. Preferably, the driven member is a flange coupled to the driven shaft for common rotation, and an erosion tool particularly suitable for the corresponding erosion task can be connected to the flange to transmit torque to the erosion tool and fulfill the erosion task.

[0022] The erosion tool can be a milling roller, which has a roller housing equipped with cutting tools, such as milling chisels. The milling chisels rotate around the operating axis during the erosion operation and erode material from the soil by engaging into the soil. The milling roller preferably has a connecting flange radially within its roller housing, and the milling roller can be connected to the driven member, preferably detachably, by means of the connecting flange.

[0023] Alternatively, the erosion tool can be a cutting wheel, a single blade or a saw blade, or a plurality of blades or saw blades arranged at intervals from one another in the axial direction. Such an erosion tool preferably also has a connecting flange radially within its cutting circle. When only one cut needs to be made in the soil, for example, to lift a soil block as a whole from the soil, a single blade or saw blade is selected. A plurality of blades or saw blades arranged at intervals from one another can be used, for example, to machine a desired surface structure into the surface of the soil, such as parallel grooves of a predetermined depth.

[0024] Since the present invention basically relates to a design of at least one side cover, it is independent of whether the soil erosion device, which is basically used to accommodate the erosion tool, actually has an erosion tool.

[0025] The coupling for transmitting torque between the erosion tool and the driven member is preferably established via a detachable connection, for example, by using at least one helical member, for example, by using a plurality of threaded pins arranged at circumferential intervals from one another in the circumferential direction and at a radial distance from the operating axis, which is also known, for example, from the coupling of a wheel to the hub of a vehicle. Alternatively, in order to reduce the installation work during the arrangement or replacement of the erosion tool, a central helical member can be used, the helical axis of which extends coaxially with the operating axis, and the central helical member is, for example, a central threaded pin or a central nut for fastening the erosion tool to the driven member.

[0026] The device housing mainly serves to protect the periphery of the soil erosion device from erosion particles, which are detached from the soil material by the erosion tool and are thrown away at high speed in all possible directions from the erosion site immediately after their detachment.

[0027] The carrier part carrying the working drive serves as the coordinate origin of the device housing. In the present application, all movements of the components of the device housing are described as relative movements with respect to the carrier part or with the participation of the carrier part to form the infrastructure. The infrastructure includes the carrier part and all other components of the device housing that are rigidly connected to the carrier part, regardless of whether these components are integrally connected to the carrier part or are indirectly or directly mounted on the carrier part. The carrier part can be, for example, an arm or / and a plate, on which the drive motor is accommodated and torque-supported thereon.

[0028] The device housing may also have a shroud, which extends circumferentially around it at a distance from the working axis in a circumferential section. The shroud then surrounds the cutting tool rotating around the working axis on the erosion tool at a radial distance. Since the erosion tool must be able to engage with the soil, the shroud does not surround the erosion tool in a closed manner, but only surrounds it in a circumferential section less than a full circle. Thus, the shroud surrounds the accommodation space for accommodating the erosion tool. The shroud is preferably at least partially a component of the infrastructure, but may have components that move relative to the infrastructure, such as a maintenance gate. For example, the carrier part can be arranged in an axial end region of the shroud. The erosion tool connected to the drive member then projects axially on one side therefrom. In the case of only one blade or saw blade, the axial one-side projection only extends in the thickness of the blade. However, in the case of a milling roller or a plurality of the above-mentioned blades or saw blades, the axial one-side projection may cause a non-negligible tilting moment on the driven member, which must be assisted accordingly by structural measures.

[0029] If present, the shroud is axially located between a first and a second side shroud. The side shrouds are preferably axially connected to the accommodation space surrounded by the shroud on both sides of the erosion tool in the accommodation space. A section of the carrier part or / and generally the infrastructure, such as a rigid housing wall oriented transversely to the working axis and connected to the shroud, can be axially located between a side shroud and the accommodation space. A section of the infrastructure defining the accommodation space can be constructed on one side of the working drive or on the axial side of the accommodation space of the erosion tool closer to the working drive, and this section has a notch extending axially through this section, so that, for example, the working drive is accommodated in the notch or the working fluid, such as hydraulic fluid or / and lubricant or / and coolant, is guided through the notch. This is particularly advantageous when the working drive is completely or partially arranged in the accommodation space of the erosion tool.

[0030] The side cover of the attached soil erosion device discussed herein determines the erosion depth at which the erosion tool erodes the soil material starting from the soil surface facing the soil erosion device during the erosion operation, based on its relative position with respect to the basic structure and with respect to the working axis. For this reason, the translatable lifting member of at least one side cover is preferably connected to the lifting drive in a self-locking manner so that the lifting member moves translationally. Then the lifting member and the side cover can only be moved translationally by the lifting drive, but not by the forces exerted on the side cover by the basic structure, such as the gravity of the basic structure and, if necessary, the gravity component of the working vehicle connected to the soil erosion device and / or the erosion reaction force of the erosion tool.

[0031] The self-locking between the lifting member and the output member of the lifting drive can be achieved by selecting the contact angle between the lifting member and the output member according to the material pair between the lifting member and the output member and according to the effective friction coefficient between the members. If the lifting drive includes a threaded drive, this contact angle can be the helix angle of the threaded drive. This contact angle can also be the helix angle of the side surface of the oblong hole into which the lifting pin is inserted, and the side surface of the lifting pin slides along this oblong hole during the translational movement of the lifting member, for example when the lifting drive has an eccentric rod known in the prior art for this purpose. Although in the latter case the lifting pin is preferably supported on and protrudes from the eccentric rod, particularly preferably protruding orthogonally to the translational movement direction of the lifting movement, it cannot be excluded that an oblong hole can be constructed on the eccentric rod and the lifting pin can protrude from the lifting member.

[0032] Alternatively, the translational fixation of the lifting member with respect to the basic structure can be carried out by a lifting actuator, where the lifting actuator prevents movement. This can be achieved by a form-fitting engagement or a friction connection engagement of a blocking element that switches between blocking engagement and release with the output element of the lifting actuator. This can be achieved in a preferably hydraulic lifting actuator by a corresponding switchable blocking valve that separates the hydraulic pressure in the lifting actuator or the hydraulic fluid in the hydraulic oil circuit that is in principle connected to the hydraulic lifting actuator.

[0033] The side cover not only determines the erosion depth of the soil erosion device during the corresponding erosion operation but also closes as well as possible axially the possible gap between the basic structure and the soil surface of the soil to be processed. Due to the adjustability of the erosion depth, such a gap between the basic structure and the soil surface is almost inevitable.

[0034] Although it should not be excluded that at least one intermediate member is arranged between the pivot member and the lifting member, the at least one intermediate member being coupled to the lifting member on one side and to the pivot member on the other side thereof, thus, in order to reduce the installation cost, it is preferably for the manufacture of the soil erosion device that the pivot member is directly pivotably supported about the pivot axis on the lifting member. For this purpose, one of the lifting member and the pivot member may have at least one curved elongated hole, preferably a plurality of curved elongated holes, and guide pins protruding from the other of the lifting member and the pivot member respectively extend into the elongated holes. The curvature of at least one elongated hole is selected such that the bending axis of at least one elongated hole, preferably a plurality of elongated holes, is the pivot axis of the pivot member. Additionally or alternatively, the pivot member may be pivotably supported on the lifting member via a pivot pin forming a pivot bearing, wherein the axis of the pivot pin is coaxial with the pivot axis. Here, it can be freely selected that the lifting member bears the pivot pin and the pivot member bears the sliding sleeve around the pivot pin, or vice versa.

[0035] Preferably, at least one guide pin has a sliding section and a blocking section surrounded by the elongated hole, wherein the blocking section has a dimension, especially a diameter, orthogonal to the guide pin axis that is larger than that of the sliding section, and a dimension orthogonal to the guide pin axis that is larger than the elongated hole penetrated by the sliding section. The sliding section of the guide pin is located along the guide pin axis between the blocking section and the member bearing the guide pin at this time. The guide pin can bear and support the lateral force acting along the working axis through the blocking section. Therefore, preferably, in order to improve the ability to bear the lateral force, there are more than one guide pins having a sliding section and a blocking section, and particularly preferably, in order to avoid the tilting moment caused by the lateral force, there are more than one guide pins having a sliding section and a blocking section on both sides of the plane containing the working axis and orthogonal to the surface of the soil to be processed in the feeding direction of the soil erosion device. The feeding direction and the orientation of the surface of the soil to be processed at the corresponding soil contact section of the side cover can be seen on the soil erosion device not connected to the working vehicle. The soil contact section usually has a contact surface in contact with the soil to be processed or / and a supporting part in contact with the soil to be processed. The feeding direction is at this time a direction orthogonal to the working axis that is parallel to the contact surface or parallel to the virtual soil surface globally defined by the supporting part. The soil surface is directly determined by the contact surface or by the virtual soil surface.

[0036] If present, the pivot pin may also have a blocking section, the blocking section having a dimension orthogonal to the pivot pin axis that is larger than the sliding opening, especially the sliding sleeve, penetrated by the pivot pin, such that the pivot pin can bear the lateral force acting in the direction of the working axis. The sliding opening, especially the sliding sleeve, is then located along the longitudinal axis of the pivot pin between the member bearing the pivot pin and the blocking section of the pivot pin.

[0037] In principle, it can also be arranged that at least another component is provided between the pivot component and the soil contact section, and the at least another component is connected to the pivot component on the one hand and to the soil contact section on the other hand. For the purpose of reducing the installation and component costs, it is preferred that the pivot component has a soil contact section.

[0038] The soil contact section can be mounted on the pivot component or can be materially connected to the pivot component, for example by a welded connection, or can be integrally constructed with the pivot component, for example as the end face of a plate-shaped pivot component.

[0039] In principle, it can also be considered that at least another intermediate component is provided between the lifting component and the basic structure, such that the lifting component can be guided translatably directly on the intermediate component and thus has a translational relative mobility with respect to the lifting component. However, for the purpose of manufacturing the soil erosion device discussed here at the lowest possible material and installation costs, it is preferred that the lifting component can be guided translatably on the basic structure. For this purpose, at least one guiding configuration can be provided on the basic structure, which interacts with a guiding mating configuration on the lifting component. The guiding configuration can be integrally constructed with the basic structure, for example by milling a guiding groove into the surface of the basic structure facing the lifting component, or the guiding configuration can be implemented on a guiding component mounted on the basic structure. This applies correspondingly to the guiding mating configuration on the lifting component.

[0040] Although in principle a translational rolling element guide between the basic structure and the lifting component can be envisaged, due to the frequently occurring contamination loads on the lifting component and the basic structure, a translational sliding guide between the lifting component and the basic structure is preferred.

[0041] Although, for example, when the device housing is configured to expand towards the erosion tool outlet facing the soil during the erosion operation, the translational movement direction of the lifting component can be inclined towards the working axis, in order to avoid the reaction of the force acting along the working axis on the translational mobility of the lifting component, it is preferred that the lifting component can be translatably moved orthogonally to the working axis.

[0042] Here, for the purpose of effectively setting the erosion depth with a short lifting stroke, the lifting component preferably translatably moves transversely, preferably orthogonally, to the outlet of the erosion tool and to the location of the erosion engagement between the erosion tool and the soil.

[0043] Alternatively or preferably additionally for the same reason, it is preferred that the pivot axis is parallel or coaxial with the working axis. In the present application, the coaxiality of the two axes is the parallelism with a spacing of 0 between them.

[0044] In principle, it is not necessary to rule out that, in addition to the translational movement, the lifting member can perform another relative movement with respect to the base structure. However, a clear functional separation is advantageous, according to which the erosion depth can be clearly set by the lifting member and a reliable seal of the engagement area of the erosion tool can be ensured by the pivoting member. The first point can be achieved by the lifting member being able to move only translationally with respect to the base structure. The second point can be achieved by the pivoting member being able to perform only a pivoting movement with respect to the lifting member.

[0045] To simplify the replaceability of the soil contact section, based on the wear of the soil contact section that is particularly suitable for the corresponding erosion task or based on its selection, it is preferably the case that the member of the side cover that bears the soil contact section is constructed to be smaller than the lifting member. At this time, due to the smaller size and lower weight, not only the storage of the soil contact section is simplified but also its installation is simplified. As described above, it is preferably the case that the soil contact section is arranged on the pivoting member and, for reasons of stability, is particularly preferably materially connected to the pivoting member. Therefore, the case where the pivoting member is smaller than the lifting member can be simply shown by the fact that the surface of the pivoting member that points away from the base structure in the direction of the pivot axis is less than 40%, preferably less than 30%, of the surface of the lifting member that points away from the base structure in the direction of the pivot axis. As a basically planar member, the surface that points in the direction of the pivot axis is a good measure of the size and weight of the relevant member.

[0046] In the prior art, it has always been preferred that the pivot axis of the soil contact section is as close as possible to the working axis, preferably coaxial with the working axis. However, the advantageous application of a pivot member that is as small as possible makes it difficult to arrange the pivot axis coaxially with the working axis. However, the sufficient sealing of the engagement area of the erosion tool with the external environment can also be ensured by the fact that the pivot axis is always on the same side of the threshold plane (Schwellenebene) that contains the working axis and is orthogonal to the projection of the translational movement stroke along the working axis when the lifting member moves translationally over its entire operating movement stroke. The pivoting movement of the work vehicle that is connected to the soil erosion device for performing the erosion operation causes a change in the effective engagement depth of the erosion tool in the soil due to the given spacing between the pivot axis and the threshold plane, but the percentage of this change with respect to the set erosion depth is tolerable, especially since the attached soil erosion device discussed here is usually used for rather rough erosion operations, where the strict flatness of the processed soil after erosion by the soil erosion device is not very important.

[0047] The "lifting stroke conforming to operation" denotes the maximum possible lifting stroke during the erosion operation. This should not exclude a lifting stroke conforming to operation with a different lifting stroke for installation purposes.

[0048] The stroke drive that can be arranged on the soil erosion device has been discussed above to enable the lifting member and the side cover to move translationally. It can be arranged in a space-saving manner such that the infrastructure bears the lifting actuator, and the output element of the lifting actuator cooperates with the lifting member of at least one multi-piece side cover to enable the lifting member to move translationally in opposite directions. In particular, the outer cover, as part of the infrastructure, provides sufficient accommodation space to accommodate the lifting actuator. Preferably, the lifting actuator is arranged on the outer side of the outer cover, specifically on the side of the soil erosion device opposite to the outlet of the erosion tool for soil engagement with respect to the working axis. The lifting actuator can be an electric motor, for example, with a screw drive or a threaded drive. Preferably, the lifting actuator is a fluid-operated piston-cylinder device. A lifting actuator with an output element capable of linear translational movement, such as a screw or a piston rod, can pivot an eccentric rod that is pivotally hinged to the infrastructure around an eccentric pivot axis parallel to the pivot axis, especially parallel to the working axis, thus causing a configuration consisting of an oblong hole and a lifting pin constructed on the eccentric rod at a distance from the eccentric pivot axis to move, thereby enabling the lifting member provided with the corresponding other configuration in the oblong hole and the lifting pin to move translationally relative to the infrastructure. Preferably, the lifting pin is arranged on the eccentric rod and the oblong hole, preferably as a simple-to-manufacture straight and unbent oblong hole, is arranged on the lifting member.

[0049] For setting the erosion depth, the lifting member is purposefully moved into the desired relative position relative to the infrastructure by the lifting actuator and is preferably held in place by self-locking as described above to relieve the load on the lifting actuator, while the pivot member is preferably held on the remaining part of the device housing, especially on the lifting member, in a passively pivoting motion relative to the lifting member. Thus, the pivot member can ensure the sealing of the engagement part of the erosion tool because it can be simply moved relative to the lifting member by an external force action, such as the pitching motion of the connected work vehicle.

[0050] Preferably, not only is the side cover constructed in the above manner, but also the two side covers of the device housing are constructed as described above. Thus, all that has been said above about at least one side cover can be implemented on each of the two side covers. Thus, the first lifting member of the first side cover can be supported relative to the basic structure by the first linear guide means so as to translate relative to the basic structure at a first guide spacing to be measured that is orthogonal to the translational movement track, and the second lifting member of the second side cover can be supported relative to the basic structure by the second linear guide means so as to translate relative to the basic structure at a second guide spacing to be measured that is orthogonal to the translational movement track. The corresponding guide spacings are formed between the linear guide configurations, in particular the partial guide configurations of the above-mentioned sliding guide portions, so as to avoid undesirable stick-slip or / and drawer effects during the translational movement of the lifting members. Preferably, the working axis (which can be extended if necessary) extends between the partial guide configurations of the linear guide means of one side cover, preferably each side cover, such that the action of the tilting moment acting about the working axis between the lifting member and the basic structure is kept as low as possible.

[0051] To simplify manufacturing and installation, the first and second side covers can comprise identical parts. Preferably, the first and second lifting members are identical parts or / and the first and second pivot members are identical parts. If the first and second soil contact sections are implemented on contact members that are constructed separately from the pivot members carrying them, such contact members can also be identical parts.

[0052] Since the two side covers are mounted on different sides or axially opposite sides of the basic structure in the same orientation, the use of identical parts is significantly simplified when the identical parts are basically constructed flat and mirror-symmetrically with respect to a mirror-symmetry plane parallel to their extension plane. Thus, one member can be mounted identically on another member or on the basic structure from both sides.

[0053] Preferably, the construction of the first linear guide portion of the first side cover, in particular the first lifting member, on the basic structure is different from the construction of the second linear guide portion of the second side cover, in particular the second lifting member, on the first basic structure. Particularly preferably, the numerical values of the first guide spacing and the second guide spacing are different to take into account different structural conditions on the two side covers. As described above, on one axial side of the device housing, at least the energy supply section of the working drive passes through the relevant side cover, in particular through its lifting member. On the other axial side of the device housing, the side cover can be constructed with a larger or smaller guide spacing so as to be able to access the accommodation space of the working tool in the device housing in order to be able to axially remove the working tool from the accommodation space and introduce it into the accommodation space and connect it to the driven member.

[0054] The soil contact section may include skids that are slidably disposed on the surface of the soil to be processed in an erosion operation with a contact surface facing the soil. Alternatively or additionally, the soil contact section may have at least one roller that rolls on the surface of the soil to be processed during the erosion operation. In order to avoid undesired wear of the soil contact section especially when the soil surface is erosive, the soil contact section may have a plurality of rollers that roll on the soil surface, wherein each roller is rollingly or ready to rollingly disposed on the soil surface with its respective support portion.

[0055] At least when materially connected to the pivot member, for the above reasons, the application of the skids that preferably project symmetrically on both sides of the pivot member does not impede the substantially flat configuration of the pivot member. The skids are usually arranged at the edge of the pivot member due to functional limitations, so as to reliably obtain soil contact during the erosion operation.

[0056] The rollers as the soil contact section are preferably mounted on the pivot member, and particularly preferably detachably mounted on the pivot member. In the case of using a standardized pivot member, the rollers as the soil contact section can be mounted on it from both sides of the standardized pivot member.

[0057] Since the drive vehicle carrying the soil erosion device should not only perform a pitching motion about the transverse axis but also other motions, such as a rolling motion about its longitudinal axis, in addition to its desired feed motion, and this rolling motion should not cause the soil contact section to lift, the soil erosion device preferably has a coupling assembly including a coupling configuration, wherein the coupling assembly is configured with a coupling configuration for detachably coupling with a self-propelled work vehicle, and wherein the coupling assembly is movably connected to the infrastructure relative to it. The relative mobility of the coupling assembly relative to the infrastructure may include a rotatable mobility about a rotational axis orthogonal to the working axis. When the soil erosion device is connected to the work vehicle, the working axis is usually parallel to the transverse axis of the work vehicle, whereby the rotational axis extends parallel to or substantially parallel to the longitudinal axis of the work vehicle.

[0058] The soil erosion device or at least the infrastructure can be actively moved about a rotational axis as the tilt axis that is orthogonal to the working axis by a rotational actuator as a tilt actuator and held in this tilted position, for example, to obtain a processed soil surface in the soil after erosion, and this soil surface is tilted about a tilt axis parallel to the feed direction during its production relative to the feed direction.

[0059] The inclined axis intersects or preferably tangentially touches the working axis. The intersection point or cutting point is preferably located at the position of the axial longitudinal middle of the corresponding erosion tool. Thus, in the case where the numerical values of the inclination angles are the same in two possible inclination directions, starting from the neutral position of the inclination angle of 0°, the foundation structure is inclined in the same manner with respect to the transverse axis of the working vehicle carrying the soil erosion device.

[0060] This inclination can alternatively be achieved by different numerical values of the translational movement positions, especially the lifting positions, of the first and second side covers relative to the foundation structure. When the soil contact sections of the two laterally displaced side covers are placed on the soil to be processed, the working axis is inclined around the inclined axis parallel to the feed direction according to the difference in the translational displacement positions at this time. To avoid unwanted overdetermination due to its unpredictable force reaction, it is advantageous that when the inclination of the soil erosion device or its foundation structure and its working axis should be determined by the different translational movement positions of the side covers, the inclination actuator acting around the inclined axis orthogonal to the working axis is held in a floating position without force at this time.

[0061] Since the side covers determine the erosion depth of the erosion tool during soil erosion by their translational movement positions relative to the foundation structure, generally the two side covers should not be simultaneously set to be without force by their respective lifting actuators, so that the two side covers can be translated relative to the foundation structure by an external force. The erosion depth set in this case is always the possible maximum erosion depth of the soil erosion device.

[0062] In the case of soil erosion with a desired inclined working axis, the working axis is moved from a parallel position to an inclined position different from the parallelism with respect to the soil surface around the inclined axis parallel to the feed direction. This can be achieved not only by two determined translational movement positions with different numerical values of the two side covers when the inclination actuator is set to be without force, but also by setting a defined translational movement position of only one side cover, by setting a defined inclination position of the foundation structure by the inclination actuator, and by the non-acting part of the lifting actuator of the corresponding other side cover. Then, the translational movement position of the corresponding other side cover can be freely set under given boundary conditions.

[0063] When it is desired to set the lifting actuator to be without force specifically to allow a freely set translational movement position of the side cover under a given external action, the side cover is preferably coupled to its corresponding lifting actuator in a non-self-locking manner, because otherwise, due to the action on the side cover, the self-locking will destroy the desired free setting of the translational movement position of the side cover relative to the foundation structure.

[0064] Alternatively or preferably additionally, the relative mobility of the coupling assembly with respect to the infrastructure may include the translatable mobility of the infrastructure with respect to the coupling assembly along a movement track extending along the working axis. When observing a soil erosion device mounted on a working vehicle, the movement track extends parallel to the working axis and generally also parallel to the transverse axis of the working vehicle, where the working vehicle is erected on a horizontal and flat foundation.

[0065] The tilting mechanism providing the above-mentioned tilting mobility of the infrastructure about an inclined axis orthogonal to the working axis, preferably tangential to the working axis, can preferably move along the working axis together with the infrastructure. Thus, it can be ensured that the relative axial position of the inclined axis with respect to the working axis is not changed by the lateral movement of the infrastructure along the working axis.

[0066] The invention also relates to a self-propelled working vehicle having an attachable soil erosion device that can be detachably coupled to the working vehicle, and the attachable soil erosion device is as described and improved above. The soil engagement area of the soil erosion device for engaging the erodible soil is preferably located in the soil area surrounded by the soil support parts of the chassis of the working vehicle. Thus, in principle, the weight of the working vehicle can be used to load the soil erosion device and especially its erosion tools towards the soil to be processed.

[0067] Preferably, the working vehicle has an operating frame that can move relative to the vehicle frame, especially pivotable about the transverse axis and / or translatable along the yaw axis, and the soil erosion device is directly connected to the operating frame. In a multi-axle working vehicle, this is the rule rather than the exception. By lowering the operating frame towards the soil to be processed, the load on the axle closer to the soil erosion device can be reduced, so that the soil erosion device can be loaded towards the soil. Description of the Drawings

[0068] The present invention will be described in detail below with reference to the drawings. Shown therein are:

[0069] Figure 1 A front view of an embodiment of the attachable soil erosion device according to the invention is shown in the viewing direction looking along the working axis towards the first side cover in its fully raised operating position.

[0070] Figure 2 Shown in the viewing direction looking along the working axis towards the second side cover in its fully raised operating position axially opposite to the first side cover. Figure 1 of the soil erosion device according to the invention.

[0071] Figure 3 Shown in a viewing direction orthogonal to the working axis and orthogonal to the surface of the soil for soil erosion. Figure 1 and Figure 2Top view of a soil erosion device according to an embodiment of the present invention

[0072] Figure 4 shows a view corresponding to Figure 1 but with the first side cover fully lowered

[0073] Figure 5 shows a view corresponding to Figure 2 but with the second side cover fully lowered, and

[0074] Figure 6 shows a top view corresponding to Figure 3 but with the first side cover and the second side cover fully lowered Detailed Description

[0075] In Figures 1 to 6 an embodiment of an attachment-type soil erosion device according to the present invention is generally designated by 10. The soil erosion device 10 has a device housing 12, and the device housing has a housing wall 14 parallel to the drawing plane of Figure 1 as a carrier member. The housing wall 14 carries a working drive 16 designed as a hybrid motor, for example. In Figure 1 there is a first side cover 18 including a central notch 20 in front of the rigid housing wall 14, and an observer can see a part of the working drive 16 and the housing wall 14 through the central notch from Figure 1 In

[0076] A milling roller 22 as an erosion tool is rotatably received in the device housing 12 about a working axis A orthogonal to the drawing plane of Figure 1 The milling roller 22 is shown by its cutting circle S, and the cutting circle shows the trajectory of the working tips of cutting tools, such as milling chisels, in the circumferential direction about the working axis A. Instead of the milling roller 22, the erosion tool may include a blade or a saw blade. The blade or the saw blade can also be presented in Figure 1 , Figure 2 , Figure 4 and Figure 5 in the same manner as the milling roller 22

[0077] The working drive 16 drives a flange F as a driven member of the working drive 16 to rotate about the working axis A. The milling roller 22 is detachably connected to the flange F

[0078] The housing 24 surrounds the milling roller 22 at a radial distance from the working axis A along a circumferential section, in order to avoid direct external contact with the milling roller 22 and its cutting tools for reasons of operating safety, and also to protect the periphery U of the soil erosion device 10 against particles consisting of minerals and ground abrasive material eroded during the prescribed erosion operation. Such erosion particles have a very high kinetic energy immediately after erosion.

[0079] In the state of being accommodated on the self-propelled work vehicle V, the soil erosion device 10 faces the work vehicle V with the back plate 26, which also belongs to the device housing 12. The work vehicle is Figure 1 only roughly shown therein. The work vehicle V is symbolically represented by the frame M of the work vehicle V. The operating frame R is accommodated on the frame in a manner that can move at least in the direction of the yaw axis Gi of the work vehicle V. The frame M and the operating frame R that can move relative thereto together represent the work vehicle V.

[0080] A side pushing mechanism 28 can be provided between the work vehicle V and the back plate 26. By means of this side pushing mechanism, the soil erosion device 10 can be translated parallel to the working axis A and parallel to the transverse axis Ni of the work vehicle V over a moving width preset by the work vehicle V or / and the side pushing mechanism 28 itself. The back plate 26 is pivotally connected to the side pushing mechanism about an inclination axis B that is parallel to the longitudinal axis Ro of the work vehicle V or / and orthogonal to the working axis A. Thus, the work vehicle V can perform a rolling movement about its longitudinal axis, while the soil erosion device 10 is not adversely affected thereby during its soil erosion operation. Preferably, the inclination axis B is tangent (schneiden) to the working axis A. Alternatively, the inclination axis B can intersect (kreuzen) the working axis A, preferably with a spacing not greater than half of the cutting circle radius, so that the inclination arm acting during inclination is advantageously held briefly between the inclination axis B and the working axis A. The back plate and the working axis A can be tilted about an inclination axis B orthogonal to the working axis A in a targeted manner by means of an inclination actuator not shown in the drawings.

[0081] An inclination mechanism that provides the mobility of the infrastructure 30 about the inclination axis B is preferably arranged on the side pushing mechanism 28 to move together with the infrastructure 30. Thereby, it can be ensured that the relative axial position of the inclination axis B with respect to the working axis A is not changed due to the operation of the side pushing mechanism 28.

[0082] The inclined axis B intersects or preferably tangentially touches the working axis A at the longitudinal mid-position in the axial direction of the respective erosion tool. Thus, in the case of the same inclination angle value in two possible inclination directions, starting from the neutral position of the inclination angle of 0°, the inclination of the basic structure is caused in the same way with respect to the transverse axis Ni of the working vehicle V carrying the soil erosion device 10. This setting is basically preferred and not only applicable to the illustrated embodiment.

[0083] Here, the housing wall 14, the outer cover 24 and the back plate 26 are rigidly connected to each other and form the basic structure 30. The milling roller 22 and the flange F can move relative to the basic structure only rotatably about the working axis A.

[0084] In Figure 1 the first side cover 18 is shown in its operating position of maximum lifting relative to the basic structure 30. The milling roller 22 projects from the device housing 22 into an opening pointing to the soil surface G and thus forms a soil embedding area 23.

[0085] In the illustrated example, the first side cover 18 is constructed in two parts and includes Figure 1 in the upper part the first lifting member 32 and in the lower part the first pivoting member 34. The first pivoting member 34 is pivotally supported on the first lifting member 32 about the first pivot axis P1. The first soil contact section 36 is materially connected to the first pivoting member 34. The first soil contact section is here constructed as a skid 38 having a contact surface 40. The first pivoting member 34 is placed slidably on the surface G of the soil to be eroded with the contact surface 40 during the soil erosion operation.

[0086] The pivot bearing of the first pivoting member 34 directly on the first lifting member 32 includes a first pivot pin 42 held on the first lifting member 32. The first pivot pin penetrates an Figure 1 opening not shown in the first pivoting member 34 and the first pivot pin carries as a blocking section having a larger diameter than the first pivot pin 42 and as a head 44 of the opening in the first pivoting member 34 penetrated by the first pivot pin 42. Thus, the pivot pin is roughly mushroom-shaped. The blocking section prevents the first pivoting member 34 from being pulled axially off the first lifting member 32. Thus, the head 44 as the blocking section withstands the lateral force acting along the working axis A or along the first pivot axis P1 and holds the first pivoting member 34 on the first lifting member 32 in the case of the application of this lateral force.

[0087] The first pivot member 34 also has a first arcuate slot 46 at the front and a first arcuate slot 48 at the rear, and their common bending axis is the first pivot axis P1. The slots 46 and 48 completely penetrate the first pivot member 34. Similarly, the slots 46 and 48 penetrate through the first guide pin 50 at the front and through the first guide pin 52 at the rear. The guide pins 50 and 52 are respectively held on the first lifting member 32, slidably penetrate through their respectively assigned first slots 46 or 48 in a sliding section, and carry heads 44 as stop sections at their free longitudinal ends. Thus, the guide pins 50 and 52 are also generally mushroom-shaped. The head 44 in turn has a larger diameter than the first guide pin 50 or 52 that carries it, and the diameter of the head exceeds the width of the slot penetrated by the corresponding guide pin 50 or 52. Thus, the head 44 axially holds the first pivot member 34 on the first lifting member 32 and also withstands lateral forces along the working axis A or the first pivot axis P1.

[0088] The extension length of the shorter of the first slots 46 and 48 determines the possible maximum pivot angle of the first pivot member 34 relative to the first lifting member 32 about the first pivot axis P1. However, in the illustrated example, the first slots 46 and 48 are configured to be of equal length.

[0089] Due to the pivotability of the first pivot member 34 relative to the first lifting member 32, when the work vehicle V performs a pitching motion about its transverse axis Ni, the first soil contact section 36 can keep its contact surface 40 in contact with the soil surface G itself. Thereby, the engagement portion of the milling roller 22 with the soil to be processed is maximally shielded relative to the periphery U in the axial direction with respect to the working axis A.

[0090] The first lifting member 32 is axially form-fittingly fixed to the infrastructure 30 at its front end region, i.e., the end region away from the work vehicle V, by a clip 54 that surrounds the first lifting member 32, and at its rear end by a strip 56 mounted to the back plate 26. The guide block 58 shown in dashed lines guides the first lifting member 32 relative to the infrastructure 30 along a straight translational first lifting track H1. The first lifting track H1 corresponds to the track generically referred to as the translational "moving track" in the preamble of the specification and extends parallel to the guiding direction preset by the slider or the guide block 58. In this example, the guide block 58 arranged on the side of the first lifting member 32 facing away Figure 1 from the observer cooperates with the guide strips 60 and 62 (also see Figure 3)Sliding abutment joint. The guide bars 60 and 62 can be implemented differently from the schematic illustration of a one-piece guide bar member. The guide bar 62 has a notch 63 through which the connecting pipe joints 61a and 61b pass to connect the supply line, for example, connecting the working actuator 16 to the hydraulic fluid return line. The connecting pipe joints 61a and 61b also pass through the notch 20 of the first side cover 18 or the first lifting member 32.

[0091] The first pivot axis P1 is spaced below the threshold plane SE that includes the working axis A and is orthogonal to the first lifting track H1 in the maximum lifted position shown. Since the first lifting member 32 and the first side cover 18 can only descend from the Figure 1 position shown in the direction towards the soil surface G, the spacing of the first pivot axis P1 from the threshold plane SE can only become larger and larger. Figure 1

[0092] In Figure 1 the first eccentric rod 64 can also be partially seen. The first lifting pin 66 is guided through the elongated hole 68 of the first lifting member 32 from the first eccentric rod parallel to the working axis A, parallel to the first pivot axis P1, parallel to the guide pins 50 and 52, and parallel to the pivot pin 42. The first lifting pin 66, which is roughly mushroom-shaped, also has a larger-diameter head 44 at its free longitudinal end, whereby the region of the lifting member 32 having the elongated hole 68 is held in a form-fitting manner between the eccentric rod 64 and the head 44 of the lifting pin 66.

[0093] The elongated hole 68 extends substantially orthogonally to the first lifting track H1.

[0094] In Figure 2 the same is shown in the observation direction parallel to the working axis A but opposite to the Figure 1 observation direction of Figure 1 the side opposite to the side shown in

[0095] On this opposite side, the device housing has a second side cover 70, which is also two-piece and has Figure 2 an upper second lifting member 72 and a lower second pivot member 74 that can be pivotally articulated thereon about a second pivot axis P2. Like the first side cover 18, the second side cover 70 is also lifted maximally relative to the infrastructure 30.

[0096] The second pivot member 74, which is preferably of the same construction as the pivot member 34 of the first side cover 18 and is preferably mirror-symmetric about a mirror-symmetry axis orthogonal to the pivot axis P1 or P2 for application on the opposite axial side of the device housing 12, has a second soil contact section 76.​

[0097] Based on the same configuration of the first pivot member 34 and the second pivot member 74, the second pivot member 74 can be described with reference to the description of the first pivot member 34, and the description of the first pivot member also applies to the second pivot member 74.

[0098] The second soil contact section 76 is also configured as a skid 78 having a contact surface 80 that slidably abuts against the surface G of the soil to be processed.

[0099] A second pivot pin 82 held on the second lifting member 72 and protruding from the second lifting member 72 parallel to the working axis A or the second pivot axis P2 pivotally supports the second pivot member 74 about the second pivot axis P2 on the second lifting member 72. The front first elongated hole 84 and the rear first elongated hole 86 define the possible maximum pivot area of the second pivot member 74 relative to the second lifting member 72 in the described manner.

[0100] A clip 54 that is identically configured to the aforementioned clip 54 and surrounds the second lifting member 72 holds the second lifting member 72 in a form - fitting manner at the front region of the second lifting member on the other axial side of the device housing 12 on the base structure 30. The rear region of the second lifting member 72 closer to the back plate 26 is held in a form - fitting manner on the base structure 30 by a combined guide and bearing member 88 and is guided along the second lifting track H2 for translational lifting and lowering movements.

[0101] In the illustrated example, the first lifting track H1 and the second lifting track H2 are parallel to each other and orthogonal to the working axis A, whereby each lifting track H1 or H2 also represents its projection along the working axis.

[0102] On the side of the second lifting member 72 facing Figure 2 the observer, a slider or guide block 90 in the guide and bearing member 88 acts together with a lifting - member - fixed guide strip 92 extending parallel to the second lifting track H2. A slider or guide block 93 is also accommodated and held in the second lifting member 72 parallel to the second lifting track H2 below the guide strip 92, but on the side facing away from Figure 2 the observer. While the slider 90 of the guide and bearing member 88 and the guide strip 92 act alternately on the side of the second lifting member 72 facing away from the base structure 30, the slider 93 is located between the second lifting member 72 and the base structure 30, for example, between the base - structure - fixed frame member 120 and the second lifting member 72 that slidably abuts against a slot configured in the frame member 120 as explained below in connection with Figure 3 this.

[0103] The height adjustment of the second lifting member 72 is carried out in the same manner as the height adjustment of the first lifting member 32 by means of a second eccentric rod 94. In the example shown, a second lifting pin 96, which is also roughly mushroom-shaped, protrudes from the second eccentric rod parallel to the guide pin and the second pivot pin 82 and parallel to the working axis A and the second pivot axis P2 and extends through a long hole 98 in the second lifting member 72, which extends exemplarily orthogonally to the lifting track H2 and is fixed by the head 44.

[0104] On the opposite axial side, the working drive 16 is fixed to the housing wall 14 orthogonal to the working axis A. The housing 12 is close to the working axis A. Figure 2 On the axial side facing the observer, no substantially continuous housing wall belonging to the basic structure 30 is formed. By accommodating the second side cover 70 by the basic structure 30, full axial access to the milling roller 22 is possible. The basic structure 30 is Figure 2 The side of the base structure 30 which is viewed from the viewer has a large opening so that after the base structure 30 has received the second side cover 70 , the milling roller 22 can be removed axially from its receiving space in the device housing 12 and the milling roller 22 can be installed axially in the receiving space and connected to the flange F in a torque-transmitting manner.

[0105] For example, when the work vehicle V is rolling, the two pivot axes P1 and P2 can be arranged at different locations and thus parallel to each other, but spaced apart from each other. When the erosion or milling depths of the two side covers are set to be the same, or during the remaining rolling motion of the work vehicle V, the two pivot axes P1 and P2 run coaxially. The above description of the first pivot axis P1 applies to the position of the second pivot axis P2 relative to the threshold plane SE. Preferably, the two pivot axes P1 and P2 always lie in a common plane that runs parallel to the first and second lifting rails H1 and H2.

[0106] Figure 3 Shown along Figure 1 and Figure 2 Arrow III in the observation Figure 1 and Figure 2 A top view of the soil stripping device 10 according to the present invention, ie viewed perpendicularly to the working axis and perpendicularly to the surface G of the soil to be processed by the soil stripping device 10. Figure 3 Here, essentially the axial end regions of the soil stripping device 10 are shown. The outer casing 24 between the axial end regions is shown shortened, which is indicated by the jagged lines. Figure 3 The work vehicle V and the side pushing mechanism 28 are not shown.

[0107] exist Figure 3 1 shows a first lifting drive 100 or a second lifting drive 102 having a first lifting actuator 104 and a second lifting actuator 106, which areFigure 1 、 Figure 2 、 Figure 4 and Figure 5 2 or only partially. The lifting actuators 104 and 106 are piston-cylinder arrangements, which are articulated with their longitudinal ends, for example, on the cylinder side, on the back plate 26 and whose protruding longitudinal ends of their piston rods 105 and 107 are coupled to the first actuating arm 108 of the first eccentric lever 64 or to the second actuating arm 110 of the second eccentric lever 94. The lifting actuators 104 and 106 are preferably operated by the work vehicle V for actuator operation and supplied with fluid, in particular hydraulic fluid.

[0108] The first lifting drive 100 and the second lifting drive 102 are essentially identical, but are designed mirror-symmetrically about a mirror-symmetrical axis perpendicular to the drive axis A. Each of the two lifting drives 100 and 102 includes a scale 112 and 114 that moves with the respectively driven eccentric rod 64 and 94 and that moves together with its eccentric rod 64 and 94 relative to an indicator 116 and 118 that is fixed to the base structure. The operator of the work vehicle V can recognize and read a reliable display of the respectively set abrasion depth from his control console. Figure 3 The middle indicator 116 or 118 shows the maximum ablation depth among the seven scale sections.

[0109] On one side of the second side cover 70, between the outer cover 24 and the second side cover 70, a frame 120 fixed to the base structure is rigidly connected to the outer cover 24. The frame 120 has an opening for axially mounting and dismounting the milling roller 22 and carries the clamp 54 and the guide and bearing member 88.

[0110] exist Figure 4 China and Israel Figure 1 The same perspective view shows the soil stripping device 10, but with the first side cover 18 at its maximum depth. The cutting circle extends completely within the device housing 12. The milling roller 22 is therefore not able to perform soil stripping operations.

[0111] Figure 5 Also with Figure 2 The same perspective view shows the soil stripping device 10 , but with the second side cover 70 at its maximum descent.

[0112] Figure 6 With Figure 3 The same perspective, i.e. along Figure 4 and Figure 5 The soil erosion device 10 is shown in the viewing direction VI. Figure 3 , side covers 18 and 70 are only with Figure 3 and 6 The drawing plane moves orthogonally, Figure 6The schematic diagram of the side covers 18 and 70 in Figure 3 remains unchanged. Only the positions of the lifting actuators 104 and 106 and their piston rods 105 or 107 are fully extended at this time. Thus, the relative positions of the eccentric rods 64 or 94 pivoting about a pivot axis parallel to the working axis A or the pivot axes P1 and P2 are changed. As a result, the relative positions between the scale rulers 112 and 114 and the indicators 116 or 118 cooperating therewith are changed, thereby displaying the currently set erosion depth, which is zero in this case, to the operator working on the work vehicle V.

Claims

1. An attachable soil erosion device (10) for releasably connecting to a work vehicle (V), wherein the attachable soil erosion device (10) comprises: - A work drive (16) having a driven member (F), wherein the driven member (F) is configured to be torque-transmittingly coupled to an erosion tool (22) rotating during erosion operation and to rotate about an operation axis (A), wherein the operation axis (A) defines an axial direction extending along the operation axis (A), a radial direction extending orthogonally to the operation axis (A), and a circumferential direction extending about the operation axis (A), and - A device housing (12) having a carrier member (14), on which the work drive (16) is received, wherein the device housing (12) has a base structure (30), and the carrier member (14) forms at least one section of the base structure. Wherein the device housing further has a first side cover (18) extending transversely to the operation axis (A) and a second side cover (70) extending transversely to the operation axis (A) and having an axial spacing from the first side cover (18), wherein the first side cover (18) has a first soil contact section (36) and the second side cover (70) has a second soil contact section (76), and each of the first soil contact section (36) and the second soil contact section (76) - Is configured to contact the soil to be processed during the erosion soil processing of the attachable soil erosion device (10), and - Is received to be translatable transversely to the operation axis (A) relative to the base structure (30) and pivotally movable about a pivot axis (P1, P2) enclosing an angle not greater than 25° with the operation axis (A). It is characterized in that at least one of the first side cover (18) and the second side cover (70) is constructed in a multi-piece manner and has a lifting member (32, 72) translatable transversely to the operation axis (A) relative to the base structure (30) and a pivot member (34, 74) capable of co-translating with the lifting member and pivotally movable about the pivot axis (P1, P2) relative to the lifting member (32, 72), wherein the first soil contact section (36) of the first side cover (18) and the second soil contact section (76) of the second side cover (70) are indirectly connected to the lifting member (32, 72) with the pivot member (34, 74) disposed in between.

2. The attached soil erosion device (10) according to claim 1, characterized in that, The pivot member (34, 74) is pivotally supported on the lifting member (32, 72) about the pivot axis (P1, P2).

3. The attached soil erosion device (10) according to claim 1 or 2, characterized in that, The pivot member (34, 74) has a soil contact section (36, 76).

4. The attached soil erosion device (10) according to claim 1 or 2, characterized in that, The lifting member (32, 72) is guided on the base structure (30) to be translatable.

5. The attached soil erosion device (10) according to claim 1 or 2, characterized in that, The lifting members (32, 72) can be translated orthogonally to the working axis (A), and / or the pivot axes (P1, P2) are oriented parallel or coaxial to the working axis (A).

6. The attached soil erosion device (10) according to claim 1 or 2, characterized in that The lifting members (32, 72) can only be translated relative to the base structure (30), and / or the pivot members (34, 74) can only pivot relative to the lifting members (32, 72).

7. The attached soil erosion device (10) according to claim 1 or 2, characterized in that, The distance of the pivot members (34, 74) from the surface of the base structure (30) in the direction of the pivot axes (P1, P2) is less than 40% of the distance of the lifting members (32, 72) from the surface of the base structure (30) in the direction of the pivot axes (P1, P2).

8. The attached soil erosion device (10) according to claim 7, characterized in that, The distance of the pivot members (34, 74) from the surface of the base structure (30) in the direction of the pivot axes (P1, P2) is less than 30% of the distance of the lifting members (32, 72) from the surface of the base structure (30) in the direction of the pivot axes (P1, P2).

9. The attached soil erosion device (10) according to claim 1 or 2, characterized in that, The pivot axes (P1, P2) are always on the same side of the threshold plane (SE) that contains the working axis (A) and is orthogonal to the projection of the moving stroke along the working axis (A) during the translational movement of the lifting members (32, 72) over their entire operating travel.

10. The attached soil erosion device (10) according to claim 1 or 2, characterized in that, The base structure (30) carries lifting actuators (104, 106), and the output elements (105, 107) of the lifting actuators cooperate with the lifting members (32, 72) of at least one of the multi-piece first side cover (18) and second side cover (70) to move the lifting members (32, 72) translationally in opposite directions.

11. The attached soil erosion device (10) according to claim 1 or 2, characterized in that, The pivot members (34, 74) are held on the lifting members (32, 72) in a passively pivoting manner.

12. The attached soil erosion device (10) according to claim 1 or 2, characterized in that, The first side cover (18) and the second side cover (70) are each constructed in a multi-piece manner and have lifting members (32, 72) that can be translated transversely to the working axis (A) relative to the base structure (30) and pivot members (34, 74) that can move translationally together with the lifting members (32, 72) and pivot relative to the lifting members (32, 72) about respective pivot axes (P1, P2), wherein the first soil contact sections (36) of the first side cover (18) and the second side cover (70) and the second soil contact sections (76) are indirectly connected to the respective lifting members (32, 72) with the respective pivot members (34, 74) arranged in between.

13. The attached soil erosion device (10) according to claim 12, characterized in that, The first lifting member (32) of the first side cover (18) can be supported so as to be translatably movable relative to the base structure (30) with a first guiding pitch to be measured, which is orthogonal to the translational movement track (H), by a first linear guiding device (58, 60, 62), and the second lifting member (72) of the second side cover (70) can be supported so as to be translatably movable relative to the base structure (30) with a second guiding pitch to be measured, which is orthogonal to the translational movement track (H), by a second linear guiding device (88, 90, 92, 93), wherein the numerical value of the first guiding pitch is different from that of the second guiding pitch.

14. The attached soil erosion device (10) according to claim 1 or 2, characterized in that, The first soil contact section (36) and the second soil contact section (76) include rollers and / or skids (38, 78).

15. The attached soil erosion device (10) according to claim 1 or 2, characterized in that, The soil erosion device (10) has a coupling assembly including a coupling configuration, wherein the coupling assembly is configured with a coupling configuration for detachably coupling with a self-propelled work vehicle (V), and wherein the coupling assembly is movably connected thereto relative to the base structure (30).

16. A self-propelled work vehicle (V), having an attached soil erosion device (10) according to any one of claims 1 to 15, which is detachably coupled thereto, wherein a soil contact area (23) of the soil erosion device (10) for erosive soil engagement is located outside a soil area surrounded by a soil support portion of a chassis of the work vehicle (V).

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