Mounted reversible plough for a tractor and method for its control

Abstract

The invention relates to a mounted reversible plough (1) for a tractor comprising: - a mounting bracket for attachment to a tractor, - a plow frame (2) for attaching plowshares, - a turning frame which is connected to the plow frame (2) and is mounted on the mounting frame so as to be rotatable about a pivot axis (S) together with the plow frame (2), - a frame pivoting actuator (3) with which the plow frame (2) and / or the turning frame can be rotated about the pivot axis (S), - a pivoting actuator (4) with which the plow frame (2) can be moved about a pivoting axis (E) transversely to the pivoting axis (S) in line with the pivoting axis (S) or away from the line with the pivoting axis (S), - wherein the mounted reversible plough (1) has an electrical or hydraulic sensor (5) for detecting a position of the plough frame (2) relative to the pivot axis (S). Furthermore, the invention relates to a method for controlling a mounted reversible plough (1).

Description

[0001] The invention relates to a mounted reversible plough for a tractor and a method for controlling a mounted reversible plough.

[0002] EP 3 427 559 A1 discloses a mounted reversible plough with a headstock for attachment to a tractor. The mounted reversible plough comprises a plough frame that carries two rows of ploughshares and is rotatable about a horizontal turning or pivoting axis.

[0003] The plough frame is mounted on a turning block, pivotable about a pivot axis perpendicular to the pivot axis, and can be pivoted into a turning position with reduced transverse overhang for the turning process by means of a pressure-operated pivot actuator. The turning block is pivotable about the pivot axis on the attachment block.

[0004] Furthermore, the pivoting actuator can be controlled by a pivot angle controller for different cutting widths and / or working widths into different stroke positions to achieve the desired turning position. The pivot angle controller has a detection device for detecting the pivot position of the plough frame relative to the turning block with respect to the pivot axis and a shut-off valve for shutting off the pressure medium supply of the pivoting actuator to move to and maintain a turning and / or transport position of the pivoting actuator depending on the detected pivot position of the plough frame. The detection device opens or closes the shut-off valve depending on the pivot position of the plough frame relative to the turning block.

[0005] Against this background, it is the object of the present invention to provide a mounted reversible plough for a tractor and a method for controlling the same, which offers an alternative to the swivel angle control and / or the detection device from the prior art.

[0006] This problem is solved by the features of the independent patent claims. Further advantageous developments are the subject of the dependent claims.

[0007] A first aspect of the present invention comprises a mounted reversible plough for a tractor.

[0008] The mounted reversible plough has a headstock for attachment to a tractor, a plough frame for attaching ploughshares and a reversible headstock which is connected to the plough frame and, together with the plough frame, is mounted on the headstock so that it can rotate about a pivot axis.

[0009] The mounted reversible plough further comprises a frame pivot actuator, with which the plough frame and / or the reversing headstock can be rotated about the pivot axis. The frame pivot actuator can be a pressure compensator or be designed as such.

[0010] In addition, the mounted reversible plough has a pivoting actuator with which the plough frame can be moved around a pivoting axis transverse to the pivot axis into alignment with the pivot axis or away from the alignment with the pivot axis.

[0011] Moving the plow frame towards the pivot axis can be understood as aligning the plow frame along and on the pivot axis, as in the case of a closing pair of scissors. Moving the plow frame towards the pivot axis can therefore be understood as reducing the angle between the plow frame and the pivot axis. The plow frame and pivot axis can each form a leg / scissor leg of a closing or closed pair of scissors. Furthermore, the plow frame can rotate about the pivot axis. Moving the plow frame away from the pivot axis can be understood as increasing the angle between the plow frame and the pivot axis, as in the case of a spreading pair of scissors or as in the case of the opening legs of a pair of scissors. In this case, the plow frame can also rotate about the pivot axis, but in the opposite direction to the moving towards it.This allows the distance between the ploughshares and the pivot axis to be adjusted or reduced to facilitate the rotation of the plough frame around the pivot axis. Furthermore, the distance between the ploughshares and the pivot axis can be increased to facilitate subsequent plowing.

[0012] The pivoting actuator can also be moved between a first position (maximum distance between the ploughshares and the pivot axis) and a second position (minimum distance between the ploughshares and the pivot axis). In the first position, the mounted reversible plough can be ready for plowing, whereas in the second position, the mounted reversible plough can be ready for road transport or for rotation around the pivot axis.

[0013] Furthermore, the mounted reversible plough includes an electrical or hydraulic sensor for detecting the position of the plough frame relative to the pivot axis.

[0014] The sensor can be a contact switch that generates an electrical or hydraulic signal, for example, only upon contact. The electrical signal can be an increased or decreased voltage. The hydraulic signal can, for example, be the opening or interruption of a fluid flow. The sensor can also be a hydraulic pressure valve or be designed as such.

[0015] The sensor can also generate an electrical or hydraulic signal, for example, only when it comes into contact with the plough frame or when it comes into contact with the pivoting actuator or when it comes into contact with a stop on the pivoting actuator.

[0016] In addition, the sensor can be positioned on the plough frame in such a way that the sensor can be contacted, for example, "only" when the distance between the ploughshares and the pivot axis reaches a minimum or is minimal. In other words, the sensor can be contacted when the angle between the plough frame and the pivot axis reaches a minimum or is minimal. The plough frame and pivot axis can each form one leg of a closing or closed scissor.

[0017] In addition, the mounted reversible plough may comprise a control circuit to which the frame pivot actuator and / or the pivot actuator is connected and / or controllable.

[0018] The sensor can be connected to the control circuit so that a signal from the sensor can be received by the control circuit.

[0019] The control circuit can also be configured and designed to move the pivot actuator toward the pivot axis after the mounted reversible plough has been lifted from the soil. The plough frame can be rotated around the pivot axis in such a way that the plough frame can be optimally aligned with the pivot axis.

[0020] In addition, the control circuit can be configured and designed to stop the movement of the pivoting actuator after contact with the sensor and to activate a rotation of the plough frame and / or the turning block using the frame pivoting actuator.

[0021] Thus, the control circuit can be configured and designed to deactivate the frame pivot actuator after rotation of the plough frame.

[0022] It is also possible for the control circuit to be configured and designed to move the pivoting actuator away from the pivot axis after the plough frame has rotated. The plough frame can be rotated about the pivot axis in such a way that the plough frame can only be slightly aligned with the pivot axis or not at all. For example, the plough frame and pivot axis can form an angle between 20 and 90 degrees, whereby the plough frame and pivot axis can each form one leg of a closing or closed scissor.

[0023] Furthermore, the control circuit can comprise a switching unit. The switching unit can be connected to the pivoting actuator and / or the frame pivoting actuator.

[0024] The switching unit can be configured and designed to move the pivoting actuator and / or the frame pivoting actuator.

[0025] Furthermore, the switching unit can be configured and designed to evaluate a signal from the sensor and to move the pivoting actuator and / or the frame pivoting actuator accordingly.

[0026] In addition, the mounted reversible plough may comprise a fluid inlet and a fluid return to supply the pivot actuator and / or the frame pivot actuator with pressurized fluid.

[0027] The fluid inlet can provide a pressurized fluid.

[0028] Furthermore, the control circuit can have a 3 / 2-way valve which is arranged between a fluid inlet of the mounted reversible plough and the pivoting actuator and / or between a fluid inlet of the mounted reversible plough and a switching unit of the control circuit.

[0029] The control circuit may comprise a 3 / 2-way valve arranged between a fluid inlet of the mounted reversible plough and the frame swivel actuator.

[0030] The 3 / 2-way valve can comprise one inlet and two outlets. The inlet can be fluidly connected to a fluid inlet of the mounted reversible plow. A first outlet can be fluidly connected to a switching unit of the control circuit and / or to a shut-off connection. A second outlet can be fluidly connected to a shut-off connection and / or to the pivoting actuator and / or to a 2 / 2-way valve of the control circuit.

[0031] In its basic position, the 3 / 2-way valve can allow flow from a fluid inlet of the mounted reversible plow to the pivoting actuator and block flow to the frame pivoting actuator. The inlet and the second outlet can be connected to each other for fluid communication.

[0032] In the operating position of the 3 / 2-way valve, it can allow flow from a fluid inlet of the mounted reversible plow to the frame pivot actuator and block flow to the pivot actuator. The inlet and the first outlet can be fluidly connected to each other.

[0033] Furthermore, the control circuit can have a 2 / 2-way valve, which is arranged between a 3 / 2-way valve of the control circuit and the swivel actuator as well as a fluid return of the mounted reversible plough.

[0034] The 2 / 2-way valve can comprise an inlet and an outlet. The inlet can be fluidly connected to a swivel actuator and to a 3 / 2-way valve of the control circuit or to its second outlet. The outlet can be fluidly connected to a fluid return of the mounted reversible plow.

[0035] In a basic position of the 2 / 2-way valve, it can be blocked, e.g. by means of a check valve.

[0036] In its operating position, the 2 / 2-way valve can allow flow to the fluid return line of the mounted reversible plough. The inlet and outlet can be fluidly connected.

[0037] In addition, the switching unit can be configured and designed to move and / or control and / or switch the pivoting actuator and / or the frame pivoting actuator and / or the 3 / 2-way valve and / or the 2 / 2-way valve.

[0038] The switching unit can further be configured and designed to evaluate a signal from the sensor and to move and / or switch the swivel actuator and / or the frame swivel actuator and / or the 3 / 2-way valve and / or the 2 / 2-way valve accordingly.

[0039] Furthermore, the swivel actuator can be a double-acting hydraulic or pneumatic cylinder. The frame swivel actuator can be a double-acting hydraulic or pneumatic cylinder.

[0040] A second aspect of the present invention comprises a method for controlling a mounted reversible plough.

[0041] It is expressly pointed out that the features of the mounted reversible plough, as mentioned under the first aspect, can be used individually or in combination with one another in the method for controlling a mounted reversible plough.

[0042] In other words, the features mentioned above under the first aspect of the invention relating to the mounted reversible plough can also be combined here with further features under the second aspect of the invention.

[0043] The method for controlling a mounted reversible plough requires a mounted reversible plough. The mounted reversible plough comprises a headstock for attachment to a tractor, a plough frame for attaching ploughshares, and a reversible headstock connected to the plough frame and mounted on the headstock for rotation around a pivot axis.

[0044] In addition, the mounted reversible plough has a frame swivel actuator with which the plough frame and / or the reversing headstock can be rotated around the swivel axis.

[0045] In addition, the mounted reversible plough includes a pivoting actuator with which the plough frame can be moved about a pivoting axis transverse to the pivot axis into alignment with the pivot axis or away from alignment with the pivot axis.

[0046] The procedure includes the following steps.

[0047] The first step involves lifting the mounted reversible plough out of the field soil.

[0048] A further step involves moving the pivoting actuator in such a way that the plough frame moves around the pivoting axis transversely to the pivot axis, in alignment with the pivot axis. This reduces the transverse overhang and facilitates the rotation of the plough frame around the pivot axis.

[0049] When contacting a sensor, the method comprises stopping the movement of the pivot actuator and activating a rotation of the plough frame around the pivot axis using the frame pivot actuator.

[0050] After the plough frame has been rotated, the frame swivel actuator is deactivated in a further process step.

[0051] A subsequent step comprises moving the pivoting actuator in such a way that the plough frame can be moved about the pivoting axis transversely to the pivot axis away from the alignment with the pivot axis in order to enable further ploughing.

[0052] A step of the method may then comprise lowering the mounted reversible plough into a field soil.

[0053] In the following, the inventive concept presented above is expressed again and additionally in other words.

[0054] This idea concerns – in simplified terms – a mounted reversible plough.

[0055] In the first version, valve technology external to a reversing block can be responsible for switching. Electrically pilot-operated directional control valves can be used here. This means that the oil flow to a reversing cylinder or actuator is not shut off, but rather redirected to a reversing cylinder or frame pivot actuator via an electrically pilot-operated 3 / 2-way valve, for example, when a limit switch or sensor is actuated. This allows sequential control to be initiated.

[0056] Once the turning process is complete, the pressure compensator in the turning cylinder or frame swivel actuator can switch over. This allows the swivel cylinder or frame swivel actuator to retract.

[0057] However, this may require an electrically pilot-operated, pilot-operated check valve, for example, so that the return flow of the swivel cylinder or frame swivel actuator, which is blocked by the 3 / 2-way valve, can be released via a bypass.

[0058] In the first version, an electric pilot control can directly access the turning block and control a sequential circuit between the turning cylinder or frame swivel actuator and the swivel cylinder or swivel actuator. This is a simple solution, requiring no additional valves.

[0059] A pressure compensator or frame pivot actuator is responsible for turning the plow frame. The sequential control can be initiated, for example, via electrically pilot-operated valves directly in the turning block. Additional directional control valves or shut-off valves are unnecessary.

[0060] Furthermore, it should be noted that the electrically pilot-operated valves in both designs or embodiments can be replaced with hydraulically pilot-operated valves. Furthermore, the electrical limit switch or sensor can also be a hydraulic limit switch or sensor.

[0061] The invention is explained in more detail below using exemplary embodiments in conjunction with the accompanying drawings. The drawings schematically show: Fig. 1 is a schematic view of a mounted reversible plough for a tractor according to a first embodiment; and Fig. 2 a schematic view of a mounted reversible plough for a tractor according to a second embodiment.

[0062] In the following description, the same reference symbols are used for the same items.

[0063] Fig. 1 shows a schematic view of a mounted reversible plough 1 for a tractor according to a first embodiment.

[0064] Shown in more detail Fig. 1 a mounted reversible plough 1 for a tractor.

[0065] The mounted reversible plough 1 has a headstock (not shown) for attachment to a tractor, a plough frame 2 for attaching ploughshares and a reversible headstock (not shown) which is connected to the plough frame 2 and is mounted on the headstock together with the plough frame 2 so as to be rotatable about a pivot axis S.

[0066] Furthermore, the mounted reversible plough 1 has a frame swivel actuator 3 with which the plough frame or the reversing headstock can be rotated about the swivel axis S.

[0067] The mounted reversible plough 1 also comprises a pivoting actuator 4, with which the plough frame 2 can be moved about a pivoting axis E transverse to the pivot axis S, into alignment with the pivot axis S or away from alignment with the pivot axis S. Moving the plough frame 2 into alignment with the pivot axis S means aligning the plough frame 2 along and on the pivot axis S, like a pair of closing scissors. Thus, moving the plough frame 2 into alignment with the pivot axis S means reducing the angle between the plough frame 2 and the pivot axis S. The plough frame 2 thereby rotates about the pivoting axis E. Moving the plough frame 2 away from alignment with the pivot axis S means increasing the angle between the plough frame 2 and the pivot axis S, like a pair of diverging scissors. The plough frame 2 thereby also rotates about the pivoting axis E, but in the opposite direction to the moving towards it.As a result, the distance between the ploughshares and the pivot axis S can be changed or reduced in order to facilitate the rotation of the plough frame 2 about the pivot axis S. Furthermore, the distance between the ploughshares and the pivot axis S can be increased in order to enable subsequent plowing. The pivoting actuator 4 can thus be moved between a first position (distance between the ploughshares and the pivot axis S is maximum) and a second position (distance between the ploughshares and the pivot axis S is minimum). In the first position, the mounted reversible plough 1 is ready for plowing, whereas in the second position the mounted reversible plough 1 is ready for transport on the road or for rotating about the pivot axis S.

[0068] How Fig. 1, the mounted reversible plough 1 has an electrical sensor 5 for detecting a position of the plough frame 2 relative to the pivot axis S.

[0069] The electrical sensor 5 is a contact switch that generates an electrical signal upon contact. The electrical sensor 5 generates an electrical signal upon contact with the pivoting actuator 4 or with a stop on the pivoting actuator 4. Furthermore, the electrical sensor 5 is arranged on the plough frame 2 such that the sensor 5 can be contacted when the distance between the ploughshares and the pivot axis S reaches a minimum or is minimal. In other words, the sensor 5 can be contacted when the angle between the plough frame 2 and the pivot axis S reaches a minimum or is minimal.

[0070] As further stated in Fig. 1, the mounted reversible plough 1 has a fluid inlet 8 and a fluid return 9 to supply the pivoting actuator 4 and the frame pivoting actuator 3 with pressurized fluid, wherein the fluid inlet 8 provides a pressurized fluid.

[0071] Generally described includes according to Fig. 1 the mounted reversible plough 1 a control circuit 6 with which the frame swivel actuator 3 and the swivel actuator 4 are connected and controllable.

[0072] Furthermore, the electrical sensor 5 is connected to the control circuit 6 so that a signal from the sensor 5 can be received by the control circuit 6.

[0073] The control circuit 6 is configured and designed to move the pivoting actuator 4 after the mounted reversible plough 1 has been lifted from a field soil so that it moves toward the pivot axis S. In doing so, the plough frame 2 is rotated about the pivot axis E, specifically in such a way that the plough frame 2 is optimally aligned with the pivot axis S.

[0074] In addition, the control circuit 6 is configured and designed to stop the movement of the pivoting actuator 4 after contact of the electrical sensor 5 and to activate a rotation of the plough frame 2 by means of the frame pivoting actuator 3.

[0075] Furthermore, the control circuit 6 is configured and designed to deactivate the frame pivot actuator 3 after rotation of the plough frame 2, wherein the control circuit 6 is also configured and designed to move the pivot actuator 4 after rotation of the plough frame 2 such that it moves away from the pivot axis S. In doing so, the plough frame 2 is rotated about the pivot axis E; specifically, such that the plough frame 2 is only slightly or not at all aligned with the pivot axis S.

[0076] Fig. 2 shows a schematic view of a mounted reversible plough 1 for a tractor according to a second embodiment.

[0077] In more concrete terms, Fig. 2 a mounted reversible plough 1 for a tractor.

[0078] The mounted reversible plough 1 has a headstock (not shown) for attachment to a tractor, a plough frame 2 for attaching ploughshares and a reversible headstock (not shown) which is connected to the plough frame 2 and is mounted on the headstock together with the plough frame 2 so as to be rotatable about a pivot axis S.

[0079] Furthermore, the mounted reversible plough 1 has a frame pivot actuator 3 with which the plough frame 2 or the reversing headstock can be rotated about the pivot axis S.

[0080] Furthermore, the mounted reversible plough 1 comprises a pivoting actuator 4, with which the plough frame 2 can be moved about a pivoting axis E transversely to the pivot axis S into alignment with the pivot axis S or away from the alignment with the pivot axis S.

[0081] A movement of the plough frame 2 towards the pivot axis S means an alignment of the plough frame 2 along and on the pivot axis S, like a pair of closing scissors. A movement of the plough frame 2 towards the pivot axis S means a reduction in the angle between the plough frame 2 and the pivot axis S. The plough frame 2 then rotates about the pivot axis E. A movement of the plough frame 2 away from the alignment with the pivot axis S means an increase in the angle between the plough frame 2 and the pivot axis S, like a pair of diverging scissors. The plough frame 2 then also rotates about the pivot axis E, but in the opposite direction to the movement towards the plough. This means that the distance between the ploughshares and the pivot axis S can be changed or reduced in order to facilitate the rotation of the plough frame 2 about the pivot axis S.Furthermore, this allows the distance between the ploughshares and the pivot axis S to be increased to enable subsequent ploughing. Thus, the pivoting actuator 4 can be moved between a first position (maximum distance between the ploughshares and the pivot axis S) and a second position (minimal distance between the ploughshares and the pivot axis S). In the first position, the mounted reversible plough 1 is ready for ploughing, whereas in the second position, the mounted reversible plough 1 is ready for road transport or for rotation about the pivot axis S.

[0082] How Fig. 2, the mounted reversible plough 1 has an electrical sensor 5 for detecting a position of the plough frame 2 relative to the pivot axis S.

[0083] The electrical sensor 5 is a contact switch that generates an electrical signal upon contact. The electrical sensor 5 generates an electrical signal upon contact with the pivoting actuator 4 or with a stop on the pivoting actuator 4. Furthermore, the electrical sensor 5 is arranged on the plough frame 2 such that the sensor 5 can be contacted when the distance between the ploughshares and the pivot axis S reaches a minimum or is minimal. In other words, the sensor 5 can be contacted when the angle, similar to the closing scissor legs, between the plough frame 2 and the pivot axis S reaches a minimum or is minimal.

[0084] As in Fig. 2, the mounted reversible plough 1 has a fluid inlet 8 and a fluid return 9 to supply the pivoting actuator 4 and the frame pivoting actuator 3 with pressurized fluid, wherein the fluid inlet 8 provides a pressurized fluid.

[0085] Generally described includes according to Fig. 2 the mounted reversible plough 1 has a control circuit 6 with which the frame swivel actuator 3 and the swivel actuator 4 are connected and controllable.

[0086] Furthermore, the electrical sensor 5 is connected to the control circuit 6 so that a signal from the sensor 5 can be received by the control circuit 6.

[0087] The control circuit 6 is configured and designed to move the pivoting actuator 4 after the mounted reversible plough 1 has been lifted from a field soil so that it moves toward the pivot axis S. In doing so, the plough frame 2 is rotated about the pivot axis E, specifically in such a way that the plough frame 2 is optimally aligned with the pivot axis S.

[0088] In addition, the control circuit 6 is configured and designed to stop the movement of the pivoting actuator 4 after contact of the electrical sensor 5 and to activate a rotation of the plough frame 2 by means of the frame pivoting actuator 3.

[0089] In addition, the control circuit 6 is configured and designed to deactivate the frame pivot actuator 3 after rotation of the plough frame 2, wherein the control circuit 6 is also configured and designed to move the pivot actuator 4 after rotation of the plough frame 2 such that it moves away from the pivot axis S. In doing so, the plough frame 2 is rotated about the pivot axis E; specifically, such that the plough frame 2 is only slightly or not at all aligned with the pivot axis S, i.e., similar to two spaced-apart scissor legs of an open pair of scissors.

[0090] Described in much more detail, according to Fig. 2, the control circuit 6 comprises a switching unit 7 connected to the pivoting actuator 4 and the frame pivoting actuator 3. The switching unit 7 is configured and designed to control the pivoting actuator 4 and the frame pivoting actuator 3 and to move both, as well as to evaluate a signal from the electrical sensor 5 and to move the pivoting actuator 4 and / or the frame pivoting actuator 3 accordingly.

[0091] Furthermore, Fig. 2, the control circuit 6 comprises a 3 / 2-way valve 10, which is arranged between a fluid inlet 8 of the mounted reversible plough 1 and the pivoting actuator 4, as well as between the fluid inlet 8 of the mounted reversible plough 1 and the switching unit 7. Furthermore, the 3 / 2-way valve 10 is arranged between the fluid inlet 8 and the frame pivoting actuator 3.

[0092] The 3 / 2-way valve 10 has an inlet 11 and two outlets 12, 13, with the inlet 11 fluidly connected to the fluid inlet 8. A first outlet 12 can be connected to the switching unit 7 or to a shut-off connection. A second outlet 13 can be fluidly connected to a shut-off connection and to the swivel actuator 4, as well as to a 2 / 2-way valve 14 of the control circuit 6.

[0093] In a basic position of the 3 / 2-way valve 10, this allows a flow from the fluid inlet 8 of the mounted reversible plough 1 to the pivoting actuator 4 and blocks a flow to the frame pivoting actuator 3. The inlet 11 and the second outlet 13 are connected to each other in a fluid-communicating manner.

[0094] In an operating position of the 3 / 2-way valve 10, this allows a flow from the fluid inlet 8 to the frame swivel actuator 3 and blocks a flow to the swivel actuator 4. The inlet 11 and the first outlet 12 are fluidly connected to each other.

[0095] In addition, Fig. 2, that the control circuit 6 has a 2 / 2-way valve 14 which is arranged between the 3 / 2-way valve 10 and the swivel actuator 4 as well as a fluid return 9 of the mounted reversible plough 1.

[0096] The 2 / 2-way valve 14 comprises an inlet 15 and an outlet 16, with the inlet 15 being fluidly connected to the pivoting actuator 4 and to the 3 / 2-way valve 10 of the control circuit 6 or to its second outlet 13. The outlet 16 is fluidly connected to the fluid return 9 of the mounted reversible plough 1.

[0097] In its basic position, the 2 / 2-way valve 14 is closed, e.g., by a check valve. In its operating position, the 2 / 2-way valve 14 allows flow to the fluid return 9 of the mounted reversible plough 1. The inlet 15 and the outlet 16 are fluidly connected to each other.

[0098] In addition, the switching unit 7 is arranged and designed to move and / or switch the pivoting actuator 4, the frame pivoting actuator 3, the 3 / 2-way valve 10 and the 2 / 2-way valve 14.

[0099] Furthermore, the switching unit 7 is configured and designed to evaluate a signal from the electrical sensor 5 and to move and / or switch the pivoting actuator 4, the frame pivoting actuator 5, the 3 / 2-way valve 10 and the 2 / 2-way valve 14 accordingly.

[0100] Finally, with regard to the first and second embodiments, it should be mentioned that the pivoting actuator 4 and the frame pivoting actuator 3 are double-acting hydraulic cylinders.

[0101] In the following, a method for controlling a mounted reversible plough 1 is also presented.

[0102] In order to implement the method, the mounted reversible plough 1 comprises a headstock for attachment to a tractor and a plough frame 2 for attaching ploughshares and a reversible headstock which is connected to the plough frame 2 and is mounted on the headstock together with the plough frame 2 so as to be rotatable about a pivot axis S.

[0103] Furthermore, the mounted reversible plough 1 has a frame pivot actuator 3 with which the plough frame 2 and the reversing block can be rotated about the pivot axis S.

[0104] Furthermore, the mounted reversible plough 1 comprises a pivoting actuator 4, with which the plough frame 2 can be moved about a pivoting axis E transversely to the pivot axis S into alignment with the pivot axis S or away from alignment with the pivot axis S.

[0105] A movement of the plough frame 2 into alignment with the pivot axis S means an alignment of the plough frame 2 along and on the pivot axis S, like a pair of closing scissors. A movement of the plough frame 2 into alignment with the pivot axis S means a reduction in the angle between the plough frame 2 and the pivot axis S. The plough frame 2 then rotates about the pivot axis E. A movement of the plough frame 2 away from the alignment with the pivot axis S means an increase in the angle between the plough frame 2 and the pivot axis S, like a pair of diverging scissors. The plough frame 2 then also rotates about the pivot axis E, but in the opposite direction to the movement. This means that the distance between the ploughshares and the pivot axis S can be changed or reduced in order to facilitate the turning of the plough frame 2.Furthermore, the distance between the ploughshares and the pivot axis S can be increased to enable subsequent ploughing. Thus, the pivoting actuator 4 can be moved between a first position (the distance between the ploughshares and the pivot axis S is maximum) and a second position (the distance between the ploughshares and the pivot axis S is minimum). In the first position, the mounted reversible plough 1 is ready for ploughing, whereas in the second position, the mounted reversible plough 1 is ready for transport on the road or for rotation about the pivot axis S.

[0106] The method comprises, as a first step, lifting the mounted reversible plough 1 from a field soil.

[0107] The pivoting actuator 4 is then moved in such a way that the plough frame 2 moves about the pivoting axis E transversely to the pivot axis S in alignment with the pivot axis S, whereby the transverse projection can be reduced and the rotation of the plough frame 2 about the pivot axis S is facilitated.

[0108] When contact is made with an electrical sensor 5, the movement of the pivoting actuator 4 is stopped and a rotation of the plough frame 2 around the pivot axis S is activated by means of the frame pivoting actuator 3.

[0109] After rotation of the plough frame 2, the frame pivot actuator 3 is deactivated and the pivoting actuator 4 is moved in such a way that the plough frame 2 moves about the pivoting axis E transversely to the pivot axis S away from the alignment with the pivot axis S in order to enable further ploughing.

[0110] Finally, the mounted reversible plough 1 is lowered into the field soil. List of reference symbols 1 mounted reversible plough 2 plough frames 3 frame swivel actuator 4 Swing actuator 5 Sensor 6 Control circuit 7 Switching unit 8 Fluid inlet 9 Fluid return 10 3 / 2-way valve 11 Entrance 12 first exit 13 second exit 14 2 / 2-way valve 15 Entrance 16 Exit E Swivel axis S swivel axis QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] EP 3 427 559 A1

[0002]

Claims

[1] Mounted reversible plough (1) for a tractor comprising: - a headstock for attachment to a tractor, - a plough frame (2) for attaching ploughshares, - a reversing block which is connected to the plough frame (2) and is mounted on the headstock so that it can rotate together with the plough frame (2) about a pivot axis (S), - a frame swivel actuator (3) with which the plough frame (2) and / or the reversing block can be rotated about the swivel axis (S), - a pivoting actuator (4) with which the plough frame (2) can be moved about a pivoting axis (E) transversely to the pivot axis (S) into alignment with the pivot axis (S) or away from the alignment with the pivot axis (S), characterized by that the mounted reversible plough (1) has an electrical or hydraulic sensor (5) for detecting a position of the plough frame (2) relative to the pivot axis (S). [2] Mounted reversible plough according to claim 1, - wherein the sensor (5) is a contact switch which generates an electrical or hydraulic signal upon contact, and / or - wherein the sensor (5) generates an electrical or hydraulic signal upon contact with the plough frame (2) or upon contact with the pivoting actuator (4) or with a stop on the pivoting actuator (4), and / or - wherein the sensor (5) is arranged on the plough frame (2) in such a way that the sensor (5) can only be contacted when the distance between the ploughshares and the pivot axis (S) reaches a minimum or is minimal. [3] Mounted reversible plough according to claim 1 or 2, - wherein the mounted reversible plough (1) comprises a control circuit (6) to which the frame pivot actuator (3) and / or the pivot actuator (4) is connected and / or controllable. [4] Method for controlling a mounted reversible plough (1), - the mounted reversible plough (1) comprising: - a headstock for attachment to a tractor, - a plough frame (2) for attaching ploughshares, - a reversing block which is connected to the plough frame (2) and is mounted on the headstock so that it can rotate together with the plough frame (2) about a pivot axis (S), - a frame swivel actuator (3) with which the plough frame (2) and / or the reversing block can be rotated about the swivel axis (S), - a pivoting actuator (4) with which the plough frame (2) can be moved about a pivoting axis (E) transversely to the pivot axis (S) into alignment with the pivot axis (S) or away from the alignment with the pivot axis (S), so that the working width or the distance of ploughshares from the pivot axis (S) can be changed or reduced to facilitate the turning of the plough frame, or increased to enable subsequent ploughing, the method comprising the following steps: - Lifting the mounted reversible plough (1) out of a field soil, - moving the pivoting actuator (4) in such a way that the plough frame (2) moves about the pivoting axis (E) transversely to the pivot axis (S) in alignment with the pivot axis (S), whereby the transverse projection can be reduced and the rotation of the plough frame (2) about the pivot axis (S) is facilitated, - upon contact with a sensor (5), stopping the movement of the swivel actuator (4) and activating a rotation of the plough frame (2) around the swivel axis (S) using the frame swivel actuator (3), - after rotation of the plough frame (2) deactivation of the frame swivel actuator (3), - moving the pivoting actuator (4) in such a way that the plough frame (2) can be moved about the pivoting axis (E) transversely to the pivot axis (S) away from the alignment with the pivot axis (S) in order to enable further ploughing, - Lowering the mounted reversible plough (1) into a field soil.

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