Mountable reversible plough

Abstract

A mounted reversible plough comprises a frame and attachment means for attaching the frame to a tractor. The frame carries at least a first and at least a second working element opposite each other and is rotatably fixed to the attachment means about a reversal axis for reversing the frame. The plough further comprises a wheel configured to adjust a working depth of the plough in two opposite operating positions of the wheel in which the first and second working elements operate respectively, and an arm which supports the wheel on the one hand and is connected to a support of the frame in rotation about a swing axis transverse to the reversal axis, thereby allowing a swing of the arm between the first and second operating positions of the wheel.

Description

Technical Field

[0001] The present invention relates to a mounted reversible plow, which includes a wheel for adjusting the working depth of the plow. Background Technology

[0002] Mounted reversible tillers are typically provided so that the tiller frame can be reversed 180° around a reversing axis pointing in the direction of travel, thereby allowing the corresponding tillage elements to be arranged alternately on the ground to be tilled, depending on the position of the frame around the reversing axis.

[0003] These plows are typically equipped with a support wheel, which is responsible for adjusting the working depth of the tillage element. Therefore, there is a need for a support wheel that allows for this adjustment.

[0004] Furthermore, it is clear that during the plow reversal phase, the wheels must reverse the working side. Typically, this reversal occurs due to gravity during the plow frame's 180° rotation around the reversal axis. In this situation, a technical challenge arises: how to optimally adjust the plow's working depth in two working positions on opposite sides of the plow in a simplified manner, without requiring additional adjustment interference.

[0005] Various attempts have been made to address the problem of providing wheel-mounted, reversible plows with effective and durable depth adjustment. This problem presents significant challenges, partly due to the need to limit the number of additional components that would increase the plow's cost and complexity.

[0006] Examples of plows are described in DE 60225958, US 3106252, PL 225892, EP 2050323, US 3305024, or DE 2756548. Summary of the Invention

[0007] The technical problem addressed by this invention is to realize a structurally mounted, reversible plow that is functionally designed to at least partially eliminate one or more of the complained defects associated with the art.

[0008] The present invention solves this problem by providing a plow according to this application.

[0009] It should be understood that the mountable reversible tillage according to the invention includes a frame and, preferably, an attachment member for attaching the frame to a tractor. In some embodiments, the frame carries at least a first tillage element and at least a second tillage element opposite to each other. In a preferred embodiment, a plurality of first tillage elements are provided opposite a plurality of second tillage elements.

[0010] Similarly, the frame is preferably fixed to the attachment member in a manner that allows it to rotate about a reversing axis, so that the frame can be reversed.

[0011] It should be noted that in this article, “reversing the frame” or “reversing the plow” refers to rotating the plow frame approximately 180° around the reversal axis so that the corresponding opposing tillage elements can operate alternately on the land to be tilled.

[0012] In some implementations, the frame can also be rotated around the reversal axis to a frame transport position corresponding to the rotation position of the intermediate frame, where the opposing tillage element operates on the ground.

[0013] Preferably, the plow also includes a wheel advantageously configured to adjust the working depth of the plow in two opposing operating positions, with the first and second tillage elements operating in the two opposing positions respectively. It should be understood that, where the frame can be rotated to a transport position, the wheel can be a combination wheel. It should be noted that, in this case, a "combination wheel" preferably refers to a wheel that is connected to the plow frame and functionally adapted to combine the adjustment of the plow's working depth with at least partial support of the plow during the transport phase.

[0014] It must be noted that in some embodiments, an arm is provided that supports the wheel on one side and is connected to a support of the frame on the other side in a manner that allows the arm to swing between a first operating position and a second operating position of the wheel.

[0015] Preferably, the swing axis is perpendicular to the reversal axis.

[0016] Advantageously, the plow also includes a first stop and a second stop, which are configured to limit the swing of the arm in a first operating position and a second operating position, respectively, thereby limiting the corresponding working depth of the plow in the operating position.

[0017] According to another advantageous aspect, the first stop and the second stop are respectively connected to the first oscillating element and the second oscillating element. Preferably, the first oscillating element and the second oscillating element are substantially identical and / or mirror images of each other. The first oscillating element and the second oscillating element are hinged to the support and kinematically connected to each other in an adjustable manner by an adjusting member configured to transmit the motion of one oscillating element to the other, thereby adjusting the working depth of the opposing tillage elements in a substantially symmetrical manner.

[0018] In practice, when the plow frame is in one of two alternating operating positions, the oscillation of the wheels can be limited by a stop device, such as a stop post. Advantageously, the stop device is configured, on the one hand, to abut against the arm, and on the other hand, to transmit the oscillation of the arm to a corresponding oscillating element hinged to a support member of the frame. According to another advantageous aspect, the oscillating elements are interconnected by an adjusting member configured to react to the oscillation, thereby adjusting the working depth of the opposing tillage elements in a substantially symmetrical manner.

[0019] In this way, the present invention simplifies the adjustment of working depth by allowing symmetrical adjustment of relative tillage elements using a single adjustment. In fact, it must be noted that, advantageously, the adjustment of working depth involves both the tillage element operating on the ground and the tillage element at rest. Attached Figure Description

[0020] Referring to the accompanying drawings, the features and advantages of the invention become clearer from the detailed description of embodiments illustrated by non-limiting examples, in which:

[0021] - Figure 1 and Figure 2 These are side views of the plow as a whole, in the operating position and the transport position respectively;

[0022] - Figure 3 and Figure 4 They are Figure 1 Detailed side and top views;

[0023] - Figure 5 and Figure 6 They are Figure 2 Detailed side and rear views;

[0024] - Figure 7 It is a detailed 3D diagram of the plow;

[0025] - Figure 8 It is a side view showing details of the plow in two different positions;

[0026] - Figure 9 It is a 3D diagram showing the details of a plow;

[0027] - Figure 10 It is a side view showing details of the plow;

[0028] - Figure 11 yes Figure 10 Details are shown in three different views;

[0029] - Figure 12 yes Figure 11 A detailed view;

[0030] - Figure 13 and Figure 14 It is a three-dimensional view of the plow's details in the first position;

[0031] - Figure 15 and Figure 16 yes Figure 13 and Figure 14 Details of the 3D view in the second position;

[0032] - Figure 17 yes Figure 7 Detailed cross-sectional perspective;

[0033] - Figure 18 This is a perspective view of the hinge member of the wheel arm according to the second embodiment of the present invention;

[0034] - Figure 19 express Figure 18 Details. Detailed Implementation

[0035] In the accompanying drawings, 1 generally represents a mounted reversible tillage, which is typically towed in the direction of travel indicated by 3 during operation. The tillage 1 includes a frame 2 and an attachment member 4 for attaching the frame to a tractor (not shown). The frame 2 also carries a first tillage element 6a and a second tillage element 6b opposite to each other, as shown in the operating position of the second tillage element 6b. Figure 1 Examples shown, and those in transport locations Figure 2 As shown in the example.

[0036] The frame 2 is rotatably fixed to the accessory member 4 by a hinge 7, which is provided to allow the frame 2 to rotate about the reversal axis 7a, thereby allowing the frame 2 to rotate between two alternating operating positions. In the two alternating operating positions, the first tillage element 6a and the second tillage element 6b operate alternately on the ground.

[0037] Advantageously, the reversing axis 7a points in the direction of travel 3. According to another advantageous aspect, the two alternating operating positions of the frame 2 rotate approximately 180° relative to each other about the reversing axis 7a.

[0038] Preferably, a hydraulic actuator 41 configured to reverse the frame 2 is provided.

[0039] The plow 1 also includes a wheel 9 for adjusting the working depth of the plow in an operating position. A pivot arm 11 is also provided to support the wheel 9. In a preferred example, the arm 11 is connected to the wheel 9 on one hand by a rotatable constraint 12 configured to allow the wheel 9 to roll, and on the other hand by a second hinge 14 configured to allow the arm 11 to swing about a swing axis 14a transverse to the reversing axis 7a.

[0040] Preferably, when the plow is in the operating position where the tillage element is operating on the ground, the swing axis 14a is horizontal and / or parallel to the ground.

[0041] It should be recognized that when the plow is in the operating position, the swing of the arm 11 can be limited on one side of the arm 11 by the first stop device 16a and on the other side by the second stop device 16b. Advantageously, the first stop device 16a and the second stop device 16b are configured, on the one hand, to abut the arm 11, and on the other hand, to transmit the swing of the arm 11 to the first swing element 5a, which is hinged to the support member 13, and the second swing element 5b, which is also hinged to the support member 13, respectively. Figure 8 As shown in the example, the first tillage element 5a and the second tillage element 5b are interconnected by an adjusting member 19, which is configured to react to the oscillation, thereby adjusting the working depth of the opposing first tillage element 6a and second tillage element 6b in a symmetrical manner. Advantageously, the adjustment of the working depth of the tillage element (6a or 6b) operating on the ground automatically and symmetrically results in the adjustment of the working depth of the tillage element (correspondingly 6b or 6a) in a stationary state.

[0042] It is understandable that, advantageously, the first swing element 5a and the second swing element 5b form a rocker arm of a first hinged quadrilateral Q1, one side of which is fixed in the support member 13, such as... Figure 3 As shown in the example. In one aspect, the first swing element 5a and the second swing element 5b can rotate alternately about a corresponding rotary joint connecting the swing elements 5a, 5b to the support 13. In this case, the adjusting member 19 forms a connecting rod of the first hinged quadrilateral Q1, and the adjusting member 19 is configured to adjust the length of the connecting rod.

[0043] It should be noted that, in this context, "hinged quadrilateral" refers to a kinematic chain consisting of four rigid (or adjustable, as in the case of adjusting member 19) members, which are preferably connected in pairs by revolute joints or hinge pins. Furthermore, it should be noted that, assuming one of the members (support member 13) is fixed, "rocker arm" preferably refers to the two members adjacent to the fixed member, and "connecting rod" refers to the member opposite the fixed member.

[0044] According to another advantageous aspect, the first swing element 5a or the second swing element 5b and the arm 11 form a rocker arm with a second hinged quadrilateral Q2 when they abut against the first stop device 16a or the second stop device 16b, one side of the second hinged quadrilateral being fixed in the support member 13, such as... Figure 8 As shown in the example. In this case, the first stop device 16a or the second stop device 16b forms the connecting rod of the second hinged quadrilateral Q2.

[0045] It will be understood that, preferably, the first hinged quadrilateral Q1 and the second hinged quadrilateral Q2 are kinematically connected to each other. Advantageously, the first hinged quadrilateral Q1 and the second hinged quadrilateral Q2 form a kinematic chain configured to transmit the adjusting motion of the adjusting member 19 to the arm 11 through the intervention of the oscillating elements 5a, 5b and the stop devices 16a, 16b, thereby adjusting the working depth of the opposing tillage elements 6a, 6b in a symmetrical manner.

[0046] Preferably, the first hinged quadrilateral Q1 and / or the second hinged quadrilateral Q2 are planar hinged quadrilaterals, that is, they are hinged quadrilaterals with axes of rotating elements that are parallel to each other.

[0047] In the embodiment shown in the figure, the oscillating elements 5a and 5b comprise two perforated plates, which are substantially identical and symmetrically arranged relative to the support 13. It should be understood that the first oscillating element 5a and the second oscillating element 5b are hinged to the support 13 about a corresponding hinge axis 5ax parallel to the oscillation axis 14a. Preferably, the first stop device 16a and the second stop device 16b are rotatably fixed to the first oscillating element 5a and the second oscillating element 5b about corresponding axes parallel to the oscillation axis 14a, respectively. In the illustrated embodiment, the first stop device 16a and the second stop device 16b take the form of stop struts, i.e., stop elements operating under general compressive stress between the respective oscillating elements 5a, 5b and the arm 11, as described in more detail below. There are two stop struts, identical to each other, and they extend axially to define the axial direction of the struts themselves.

[0048] On the one hand, when the plow is in the operating position, one of the oscillating elements (5a or 5b) faces upward, while the other oscillating element (5b or 5a, respectively) faces the ground.

[0049] It should be noted that when the frame 2 is resting on the ground via the wheels 9, preferably only one of the two stop devices (16a or 16b) is engaged to counteract the swinging of the arm 11. It should be noted that in this case, the stop device (16a or 16b) closest to the ground is stationary, while the stop device furthest from the ground (correspondingly 16b or 16a) is engaged, i.e., it supports the arm 11. Advantageously, during the reversal of the frame 2, the stop devices 16a and 16b, under the influence of gravity, rotate the corresponding swing elements 5a and 5b about their respective rotatable constraint axes, thereby moving them from the working configuration on the arm 11 to the stationary configuration, or from the stationary configuration to the working configuration on the arm.

[0050] When the stop device 16a or 16b is in operation to counteract the swinging of the arm 11, the stop device engages with the corresponding swing element 5a or 5b, which is rotatably fixed to the arm 11, by facing upward toward the arm, thereby bearing the main compressive stress. In one aspect, the first stop device 16a and the second stop device 16b have a first end and a second end opposite to the first end, the first end being rotatably fixed to the corresponding first swing element 5a and the second swing element 5b, the second end being configured to abut against a corresponding recess 21 manufactured in the arm 11, such as... Figure 8 As shown in the example.

[0051] In one aspect, the support 13 includes at least one first abutment 8 configured to restrict the rotational paths of the first oscillating element 5a and the second oscillating element 5b about their respective hinge axes 5ax. When the plow is in the operating position where the stop device 16a (or 16b) abuts the arm 11, the stop device forces the associated oscillating element 5a (or 5b) to rotate about its respective hinge axis 5ax. Since the oscillating element 5a (or 5b) is associated with the adjustment device 19, the rotation of the oscillating element 5a (or 5b) forces the adjustment member 19 to compress, which in turn forces the associated other oscillating element 5b (or 5a) to rotate to a point where the other oscillating element 5b (or 5a) abuts against the first abutment 8 formed in the support 13, thus restricting the rotational path of the oscillating element 5b (or 5a). Figure 8 As shown. In this way, the extension of the adjusting element 19 causes the oscillating element to rotate relative to another oscillating element.

[0052] In one respect, the oscillating elements 5a and 5b act as mechanical rockers, i.e., as swing arms pivoting to the support 13, thus realizing a first-stage mechanical lever. In fact, when the wheel 9 rests on the ground, the oscillating element 5b (or 5a)—depending on the operating position of the frame 2 about the reversing axis 7a—is not kinematically connected to the arm 11 and is pushed towards the first stop 8 by the adjusting member 19. On the other hand, the oscillating element 5a (or 5b)—depending on the operating position of the frame 2 about the reversing axis 7a—is kinematically connected to the arm 11, realizing a first-stage lever that pivots about its own hinge axis 5ax. In practice, the fulcrum is positioned between two forces, which are respectively applied by the swing of the arm 11 on the one hand and by the adjusting member 19 on the other. Thus, on one hand, the lever is stressed by the stop 16a (or 16b) abutting the arm 11, and on the other hand, the lever stresses the adjusting member 19. Thus, the swing element 5a (or 5b) kinematically connected to the arm 11 can rotate due to the effect of the change in the extension of the adjusting member 19, while the swing element 5b (or 5a) not kinematically connected to the arm 11 remains in its position abutted by the first stop member 8. The working depth adjustment remains unchanged when the wheel 9 moves from one operating position to another.

[0053] like Figure 8 As shown in the example, the adjusting member 19 has variable extensions L, L', which allows control of the rotation of the oscillating element 5a (or 5b), which is kinematically connected to the arm 11 depending on the operating position of the frame 2 about the reversing axis 7a. The rotation of the oscillating element 5a (or 5b) in turn adjusts the position of the arm 11, thereby adjusting the distances H, H' between the wheel 9 and the frame 2 to adjust the working depth of the tillage elements 6a and 6b.

[0054] Adjusting member 19 may include at least one adjusting device selected from the following: for example, Figure 7 The hydraulic cylinder shown, for example, is a hydraulic cylinder. Figure 9 The mechanical pull rod, electromechanical device (not shown), or element (e.g., rod or plate) with multiple holes (not shown) shown. It will be understood that the holes preferably have fixed positions.

[0055] like Figure 17As shown in the example, the adjusting member 19 may include an adjustable end stop 80, which is configured to adjust for a minimum length of the adjusting member itself. It should be understood that the end stop 80 may include, for example, a threaded bushing, whose position can be adjusted by tightening / loosening relative to the body 81 of the adjusting member 19. In operation, the bodies 81 are secured to a first oscillating element 5a and a second oscillating element 5b at their annular ends 82. The end stop 80 retains its position as the movable body 83 of the adjusting member moves relative to the body 81 to raise the plow frame relative to the ground. In this way, the frame can be raised relative to the ground by extending the adjusting member 19 without losing the reference position established by the adjustable end stop 80. In some embodiments not shown, the end stop 80 includes a plurality of shims with different heights.

[0056] During the reversal of frame 2, the oscillation of wheel 9 between two alternating operating positions can be slowed down by damper 17.

[0057] like Figure 18 and Figure 19 As highlighted in the example, the damper 17 advantageously includes a movable element 30 that is kinematically connected to the arm 11 during the reversal of the frame 2. The movable element 30 is configured to slide along the longitudinally extending support 31 to reduce the swaying of the arm 11 during the reversal.

[0058] In one aspect, the support member 31 extends along a sliding axis 17a between two opposite ends 32 of the support member 31. The ends 32 of the support member 31 are fixed to the support member 13.

[0059] Preferably, the support member 31 is a rod 31, and the movable element 30 is a sleeve 30 of the rod 31.

[0060] More preferably, the sleeve 30 is configured to slide along the rod 31 in the presence of a viscous fluid. Advantageously, actuation of the damper 17 causes viscous oil to move from one side of the damper through a calibration channel (not shown) to the other side, which allows oil to permeate between the two chambers (not shown), thereby damping the sliding speed of the sleeve 30 along the rod 31.

[0061] In some embodiments, the movable element 30 is kinematically connected to the arm 11 via an actuating pin 27, which is fixed to the arm 11 and configured to abut against a slot 33 associated with the movable element 30, such as... Figure 19 As shown in the example. Advantageously, the control pin 27 is fixed to the arm 11 on the opposite side to the wheel 9. According to another advantageous aspect, the support 31 is adjacent to the pin of the second hinge 14 and is located on the portion of the arm 11 opposite to the wheel 9.

[0062] In a preferred embodiment, the movable element 30 is configured to slide relative to the support 31 along a sliding axis 17a that is transverse to the reversal axis 7a and / or the swing axis 14a. Preferably, the sliding axis 17a is perpendicular to the reversal axis 7a and / or perpendicular to the swing axis 14a.

[0063] It will be understood that, in one respect, during the reversal of frame 2, arm 11 forms a lever that pivots about swing axis 14a, and wheel 9 and damper 17 are configured to apply motive force-weight and resistance relative to the motive force-weight, respectively, to the lever.

[0064] like Figure 18 As shown in the example, during the reversal of frame 2, the lever formed by arm 11 can be a first-stage lever, wherein the dynamic weight and resistance are applied to arm 11 at completely opposite positions relative to the swing axis 14a.

[0065] According to another advantageous aspect, during the reversal of frame 2, the lever formed by arm 11 can be a second-level lever, wherein the dynamic weight and resistance are applied to arm 11 from the same side relative to the swing axis 14a.

[0066] like Figure 10 As shown in the examples, in some embodiments, during the reversal of frame 2, movable element 30 is kinematically connected to arm 11 via mechanical element 22, which is rotated and fixed about swing axis 14a. Figure 7 As shown in the example, the mechanical element 22 may be in the form of a plate with a central hole configured to receive the pin of the second hinge 14. In this case, during the reversal of the frame 2, the mechanical element 22 is driven by the arm 11 to rotate about the swing axis 14a. It should be understood that the damper 17 is configured to react to the rotation of the mechanical element 22 about the swing axis 14a, thereby reducing the swing of the arm 11 during the reversal.

[0067] Under these conditions, the operation of damper 17 is achieved through... Figure 11 The following example illustrates the sequence. It is understood that the movable element 30 is kinematically connected to the mechanical element 22. In one aspect, the mechanical element 22 includes a portion 26 extending radially relative to the pivot axis 14a, said portion 26 including an actuating pin 27 adapted to engage in a groove 33 manufactured in the movable element 30. Advantageously, the engagement of the actuating pin 27 with the groove 33 allows rotation of the mechanical element 22 to be converted into translation of the movable element 30 along the support 31.

[0068] In one aspect, the mechanical element 22 includes two teeth 24 extending radially relative to the swing axis 14a. Advantageously, the teeth 24 are configured to abut against the engagement arm 11 to achieve a rotational connection about the swing axis 14a between the mechanical element 22 and the arm 11.

[0069] According to another advantageous aspect, the oscillating elements 5a and 5b include a second abutment 20, which is configured to limit the oscillation path of the arm 11 about the oscillation axis 14a, such as... Figure 12 As shown in the example. Advantageously, the second abutment 20 is configured to engage and disengage with the corresponding recess 21 of the arm 11.

[0070] In one aspect, the second abutment 20 is configured to restrict the rotational path of the mechanical element 22 about the swing axis 14a. Preferably, the teeth 24 of the mechanical element 22 are adapted to engage with the second abutment 20 in order to restrict the rotational path of the mechanical element 22.

[0071] It should be recognized that mechanical element 22 is particularly advantageous when wheel 9 is a combination wheel, as will be explained in more detail below.

[0072] In fact, it should be noted that in some embodiments, the frame 2 is rotatably fixed to the accessory member 4 so as to rotate between two alternating operating positions and an additional transport position located between the two alternating operating positions. The transport position is located between the two alternating operating positions, i.e., the transport position is located at a position rotated 90° about the reversal axis 7a relative to each of the two alternating operating positions. As an example, it can be understood that... Figure 1 The frame 2 shown is in the operating position. Figure 2 The frame 2 shown is in a position relative to Figure 1 The operating position is the transport position rotated 90° around the reversing axis 7a. In this case, wheel 9 is a combination type wheel.

[0073] During the transport phase, the swing axis 14a is vertical and / or perpendicular to the ground. In this case, the arm 11 is configured to rotate about the repositioning axis 15a of the third hinge 15, which is perpendicular to the swing axis 14a of the second hinge 14, so that the combined wheel 9 can move between a first position 15' and a second position 15'', in which the combined wheel 9 is configured to adjust the working depth of the tillage element 6a or 6b, such as... Figure 3 and Figure 4 As shown in the example, in the second position, the combination wheel 9 is configured to support the frame 2 in the transport position, as... Figure 5 and Figure 6 As shown in the example.

[0074] Advantageously, a safety pin 23 is provided, which is configured to prevent rotation of the arm 11 about the repositioning axis 15a at the first position 15' of the combined wheel 9, such as... Figure 13 and Figure 14 As shown in the example, or blocked at the second position 15'' of the combination wheel 9, such as Figure 15 and Figure 16 As shown in the example.

[0075] According to another advantageous aspect, when the combined wheel 9 is in the second position 15'', the arm 11 is disconnected from the mechanical element 22. In this way, the combined wheel 9 can swing freely about the swing axis 14a without obstruction, thereby allowing the direction of the wheel's roll to be changed according to the path taken during transport.

[0076] In some embodiments, the support 13 is connected to the frame 2 via a fourth hinge 18 having a fourth axis 18a perpendicular to both the reversal axis 7a and the swing axis 14a. Advantageously, the fourth hinge 18 allows the swing axis 14a to tilt relative to the reversal axis 7a about the fourth axis 18a to be adjusted. Preferably, as shown... Figure 4 As shown, a perforated plate 60 is provided, which is adapted to fix the fourth hinge 18 in an adjustable position.

[0077] Therefore, the present invention solves the problems raised and achieves many advantages, including:

[0078] - By utilizing a single adjustment, symmetrical adjustment of relative tillage elements is allowed, thus simplifying the adjustment of working depth;

[0079] - The wheels can be adjusted via a single adjusting component, possibly through a single hydraulic hose from the tractor to the combined wheel;

[0080] - The frame was raised without losing the previously set working depth adjustment;

[0081] - When flipping the frame, the descent of the wheel from one operating position to another is slowed down;

[0082] -Simplifies the movement of the combined wheels to the transport location and from the transport location to the combined wheels.

Claims

1. An mountable reversible tillager (1) comprising a frame (2) and an attachment member (4) for attaching the frame (2) to a tractor, the frame (2) carrying at least a first tillage element (6a) and at least a second tillage element (6b) opposite to each other, and the frame (2) being fixed to the attachment member (4) in a manner rotatable about a reversing axis (7a) to allow the frame (2) to be reversed, the tillager (1) further comprising: Wheel (9), the wheel is configured to adjust the working depth of the plow in opposite first and second operating positions of the wheel (9), the first tillage element (6a) and the second tillage element (6b) operating in opposite first and second operating positions respectively; An arm (11) that supports the wheel (9) on one hand and is connected to a first support (13) of the frame (2) on the other hand in a manner rotatable about a swing axis (14a) transverse to the reversing axis (7a), thereby allowing the arm (11) to swing between a first operating position and a second operating position of the wheel (9); and a first stop (16a) and a second stop (16b) configured to respectively limit the swing of the arm (11) in the first operating position and the second operating position, thereby limiting the corresponding work of the plow in the first operating position and the second operating position. The working depth is defined by the first stop device (16a) and the second stop device (16b) being connected to the first swing element (5a) and the second swing element (5b), respectively. The first swing element (5a) and the second swing element (5b) are hinged to the first support (13) and kinematically connected to each other in an adjustable manner by an adjusting member (19), which is configured to transmit the motion of one of the swing elements (5a) and the second swing element (5b) to the other swing element so as to adjust the working depth of the opposing first tillage element (6a) and second tillage element (6b) in a symmetrical manner.

2. The plow (1) according to claim 1, wherein, The first swing element (5a) and the second swing element (5b) form a rocker arm of a first hinged quadrilateral (Q1), the first hinged quadrilateral having a side fixed in the first support (13), and the adjusting member (19) forming a connecting rod of the first hinged quadrilateral (Q1) and configured to adjust the length of the connecting rod.

3. The plow (1) according to claim 1 or 2, wherein, The first swing element (5a) or the second swing element (5b) and the arm (11) form a rocker arm with a second hinged quadrilateral (Q2) when they abut against the first stop device (16a) or the second stop device (16b). The second hinged quadrilateral has a side portion fixed in the first support member (13). The first stop device (16a) or the second stop device (16b) forms a connecting rod of the second hinged quadrilateral (Q2).

4. The plow (1) according to claim 1 or 2, wherein, The adjusting member (19) includes at least one adjusting member selected from the following: a hydraulic cylinder, a mechanical rod, an electromechanical device, or an element having multiple holes.

5. The plow (1) according to claim 1 or 2, wherein, The first swing element (5a) and the second swing element (5b) are hinged to the first support (13) about a corresponding hinge axis (5ax) parallel to the swing axis (14a).

6. The plow (1) according to claim 5, wherein, The first support member (13) includes a first abutment (8) configured to restrict the rotational paths of the first swing element (5a) and the second swing element (5b) about the hinge axis (5ax).

7. The plow (1) according to claim 1 or 2, wherein, The first swing element (5a) and the second swing element (5b) include a second abutment (20) configured to restrict the swing path of the arm (11) around the swing axis (14a).

8. The plow (1) according to claim 1 or 2, the plow further comprising a damper (17) configured to reduce the swaying of the arm (11) during the reversal of the frame (2).

9. The plow (1) according to claim 8, wherein, The damper (17) includes a movable element (30) kinematically connected to the arm (11) during the reversal of the frame (2). The movable element (30) is configured to slide along a second support (31) extending longitudinally, and the end (32) of the second support (31) is fixed to the first support (13) to reduce the swing of the arm (11) during the reversal. The movable element (30) is kinematically connected to the arm (11) during the reversal by a mechanical element (22) fixed in a manner that allows rotation about the swing axis (14a). The mechanical element (22) is driven by the arm (11) to rotate about the swing axis (14a) during the reversal of the frame (2). The damper (17) is configured to react to the rotation of the mechanical element (22) about the swing axis (14a), thereby reducing the swing of the arm (11) during the reversal.

10. The plow (1) according to claim 9, wherein, The first swing element (5a) and the second swing element (5b) include a second abutment (20) configured to restrict the swing path of the arm (11) about the swing axis (14a), wherein the second abutment (20) is configured to restrict the rotation path of the mechanical element (22) about the swing axis (14a).

11. The plow (1) according to claim 1 or 2, wherein, The wheel (9) is a combination wheel, and the arm (11) is configured to rotate about a repositioning axis (15a) perpendicular to the swing axis (14a) so that the combination wheel can move between a first position (15') and a second position (15''). In the first position, the combination wheel is configured to adjust the working depth of the first tillage element (6a) and the second tillage element (6b). In the second position, the combination wheel is configured to support the frame (2) in the transport position.

12. The plow (1) according to claim 9, wherein, The wheel (9) is a combination wheel, and the arm (11) is configured to rotate about a repositioning axis (15a) perpendicular to the swing axis (14a) so that the combination wheel can move between a first position (15') and a second position (15''). In the first position, the combination wheel is configured to adjust the working depth of the first tillage element (6a) and the second tillage element (6b). In the second position, the combination wheel is configured to support the frame (2) in a transport position. When the combination wheel is in the second position (15''), the arm (11) is disconnected from the mechanical element (22).

13. The plow (1) according to claim 1 or 2, wherein, The swing axis (14a) is perpendicular to the reversal axis (7a).

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