Ausbringmaschine

Abstract

The invention relates to a spreading machine (2) for spreading seed and / or fertiliser comprising multiple coulter tools (10) arranged on a coulter frame (4) orientated transverse to the working direction (A) for depositing the seed and / or fertiliser in the soil, wherein each coulter tool (10) is articulatedly connected with a first end (26) of at least one control arm (24) extending in the working direction (A) of the spreading machine (2) and pivotally moving in the vertical direction, the control arm (24) is articulatedly connected by a second end (28) to the coulter frame (4) and / or to a frame console (54) arranged on the coulter frame (4), and the control arm (24) is articulatedly connected via a first mounting point (36) to a first end (32) of a hydraulic cylinder (30) serving as an adjustment drive, which is articulatedly supported by a second end (34) via a second mounting point (38) on the coulter frame (4) and / or the frame console (54), wherein a respective mounting interface (46) from the hydraulic cylinder (30) to the coulter frame (4), the frame console (54) or the control arm (24) is formed at the mounting points (36, 38). According to the invention, the spatial position of the first mounting point (36) in relation to the coulter frame (4) and / or the frame console (54) and / or the spatial position of the second mounting point (38) in relation to the control arm (24) can be varied, so that a different angle of attack of the hydraulic cylinder (30) to the control arm (24) and coulter frame (4) and / or frame console (54) is set with the same angular position of the control arm (24) relative to the coulter frame (4) and / or the frame console (54).

Description

[0001] spreading machine

[0002] The present invention relates to a spreading machine according to the preamble of claim 1.

[0003] Seed drills, as an example of a seeding machine, often have one or more rows of coulter tools distributed across the working width of the seed drill and mounted on a coulter frame arranged transversely to the working direction. Coulter tools used include coulter discs, which prepare the soil for the application of seed and / or fertilizer by, for example, creating a seeding or fertilizer furrow in the soil surface.

[0004] A typical spreading machine is shown in document DE 20 2007 014 375 U1. In order to place the seed and / or fertilizer at a desired depth in the soil, the coulter tools connected to the coulter frame are adjusted to a desired working depth, for example using a bolt or spindle. In order to precisely maintain a set placement depth, the coulter tools must be subjected to a force that varies depending on the soil. The hydraulic cylinders used to generate the coulter pressure are connected to a common hydraulic line. The adjustment of the hydraulic cylinders serving as adjustment drives is achieved via a hydraulic valve that controls the volume flow and / or working pressure in a hydraulic line to which the hydraulic cylinders serving as adjustment drives are jointly connected. All coulter tools are set to the same coulter pressure by actuating the one hydraulic valve.The downward force resulting from the set share pressure pushes the share tools into the ground to the previously set, or at least approximately appropriate, depth.

[0005] Thanks to an elastic bearing for the blade tools within a limited pivoting range, they can be pressed into the ground with a preload. However, the elastic bearing allows a blade tool to deflect upwards if it encounters a foreign object such as a stone during use, or if the ground pressure is so high for some other reason that the blade tool deflects upwards against the restraining force of the elastic bearing.

[0006] However, if the soil is compacted to varying degrees across the working width of the spreading machine, the coulter tools in the more heavily compacted areas will not penetrate as deeply into the soil as the coulter tools pressed into less compacted areas by the coulter frame. For example, the soil may be more heavily compacted in the track of the tractor pulling the spreading machine, or the soil may have been more heavily compacted by the wheels of a preceding seed drill. In such a case, the seed and / or fertilizer will be placed at different depths in the soil across the working width of the spreading machine, even though the working tools have been set to an identical working depth using their mechanical adjustment device.The different placement depth of the coulter tools caused by different soil compaction cannot be corrected with the joint hydraulic adjustment of the coulter pressure.

[0007] From document DE 102014 002 911 A1, it is known to individually increase or decrease the ground pressure with which the coulter tools of a seed drill are pressed onto the soil to be worked using separate coulter pressure adjustment devices. A mechanical spring is used as a separate coulter pressure adjustment device on each coulter tool, which, depending on the set preload, increases or decreases the pressure with which a coulter tool is pressed onto the soil during sowing. If the preload is increased for those coulter tools that are aligned with the wheels of a tractor or a seed drill wagon - i.e., in the area of ​​more heavily compacted soil - the corresponding coulter tools will be pressed into the soil to the same depth as the neighboring rows in less reconsolidated soil areas, despite the more heavily compacted soil.With a properly selected preload, the seed and / or fertilizer placement is at least approximately even across the working width of the seed drill. However, the complex mechanics and operation of the coulter pressure adjustment devices are a disadvantage here. From document DE 102021 114 944 A1, it is known to generate the ground pressure force with which the coulter tools of a spreading machine are pressed onto the ground hydraulically via coulter pressure adjustment cylinders. The hydraulic circuit, which supplies the coulter pressure adjustment cylinders with a pressure force, is designed in such a way that different maximum pressures are available for each coulter pressure adjustment cylinder via several pressure relief valves.While the coulter pressure adjustment cylinders, which apply pressure to a coulter tool located next to a track, are connected to a hydraulic circuit with a lower maximum pressure, the coulter tools aligned with a track are pressed to the ground by a coulter pressure adjustment cylinder connected to a hydraulic circuit with a higher maximum pressure. However, the piping system required for such a hydraulic circuit, including the necessary valve technology, is complex and costly from a mechanical engineering perspective.

[0008] Document WO 2023 / 280067 A1 proposes using different hydraulic cylinders as coulter pressure adjustment cylinders across the working width of the spreading machine. These cylinders exert different ground pressure forces on the coulter tools at the same pressure in the hydraulic system. However, the hydraulic cylinders must be replaced if the coulter tools of the spreading machine are to be converted back to a uniform ground pressure force for all coulter tools, or if the increased ground pressure is to be exerted on coulter tools located at a different point within the working width of the spreading machine. Replacing multiple hydraulic cylinders is complex because not only the mechanical connections of the hydraulic cylinder to the mounting points must be loosened and reattached, but also the hydraulic connections.

[0009] It is the object of the present invention to be able to adjust the share tools on a spreading machine to a different ground pressure force and to re-adjust them again without having to accept the disadvantages known from the prior art.

[0010] The problem is solved by the characterizing features of claim 1.

[0011] By changing the spatial position of the first mounting point in relation to the share frame and / or the frame console and / or the spatial position of the second mounting point in relation to the control arm, the angle of attack of the hydraulic cylinder serving as the actuator for an associated share tool can be changed in relation to the control arm. If the spatial position of at least one mounting point has been changed, a different angle of attack of the hydraulic cylinder in relation to the control arm and share frame or the frame console will result, even if the angular position of the control arm in relation to the share frame and / or the frame console remains the same. If the angle of attack of such a hydraulic cylinder is changed in this way, this results in a changed leverage force with which the hydraulic cylinder presses the associated share tool onto the ground.The steeper the angle of attack at which the hydraulic cylinder is positioned on a corresponding link arm, the greater the force with which the link arm and the associated plough tool are pressed onto the ground, assuming the same working pressure in the shared hydraulic line. If a mounting point is spatially changed in such a way that this results in a steeper angle of attack for this hydraulic cylinder on the associated link arm than for other hydraulic cylinders, this hydraulic cylinder will transfer a greater ground pressure force to the associated plough tool than the other hydraulic cylinders do to their respective assigned plough tools. Conversely, the ground pressure force exerted on a plough tool can be reduced by changing the mounting points of the associated hydraulic cylinder so that the hydraulic cylinder has a flatter angle of attack on the link arm.By adjusting at least one mounting point of the hydraulic cylinder used to adjust the working depth of a share tool, the ground contact force with which this share tool is pressed against the ground can be specifically increased or decreased depending on the direction of displacement of the corresponding mounting point. In this way, individual share tools, which are aligned, for example, with the track of a tractor or another leading wheel, can be easily adjusted to a higher ground contact force. Reverting to a lower ground contact force is also achieved by changing the corresponding mounting points in the corresponding direction.

[0012] A mounting point is the spatial point at which the hydraulic cylinder is attached to a corresponding component of the share frame, frame console, or control arm. The mounting points can be adjustable in various ways. Depending on which mounting point is adjustable, several mounting interfaces can be provided on the share frame side and / or control arm side, via which a corresponding end of the hydraulic cylinder can be connected to the share frame, frame console, and / or control arm. A mounting interface can be, for example, a fastening eyelet, a receptacle for a hinge pin or a pivot bearing - each for a stepwise change of the mounting point - or an elongated hole as a guide slot with a clamping screw for a stepless change of the mounting point, or a similar connecting device.The mounting interfaces are arranged in their spatial sequence and spatial position in such a way that when the hydraulic cylinder is connected to one or the other mounting interface, a different angle of attack of the hydraulic cylinder results in a different angle of attack in relation to the control arm and the share frame.

[0013] Alternatively or additionally, several mounting interfaces can also be arranged on the hydraulic cylinder at its first and / or second end.

[0014] A change to a mounting point can also occur if a component of a mounting interface is spatially relocated, either by a different mounting position of the same component on the same mounting interface or by the installation of another component in the mounting interface, such as a spacer, a wedge, or the like. By physically relocating the installation position of a hydraulic cylinder that adjusts the share pressure of a share tool whose ground contact force is to be increased or decreased, this individual share tool can then be specifically adjusted to a different ground contact force by attaching it to different mounting points. The mechanical conversion effort is minimal if the appropriate mounting interfaces are available on the spreading machine.Since a spreading machine is usually driven with a specific tractor or with tractors that have the same track width and / or tire width, the spreading machine only needs to be adjusted once to the tractor tracks of tractors with that one track width and / or tire width. The overall coulter pressure of the coulter tools is adjusted more frequently during daily work; it can still be done very conveniently using hydraulic adjustment. Additional, complex coulter pressure adjustment devices with additional power accumulators and adjusting devices are no longer necessary. Finally, changing the ground pressure of a coulter tool does not require different hydraulic cylinders to be kept on hand and laboriously replaced if adjustments are required.

[0015] According to one embodiment of the invention, the link arm is a component of a four-joint parallelogram, to whose end facing away from the coulter frame the coulter tool is connected. The four-joint parallelogram allows the coulter tool to follow an uneven ground contour in a controlled and regulated upward and downward movement. In the parallelogram, it is sufficient for the hydraulic cylinder to engage one of the link arms of the parallelogram to generate coulter pressure.

[0016] According to one embodiment of the invention, the hydraulic cylinder serving as an adjustment drive forms a stop for a deflection movement of the control arm in a vertical direction relative to the ground in its shortest and longest extended positions. Since the control arm is articulated to the share frame and / or the frame console and the share tool, it could theoretically rotate by up to 360° if the share frame or the frame console is moved accordingly in a vertical direction, provided the appropriate movement space is available. However, this could result in positions of the share tool relative to the share frame that are undesirable from a functional and practical point of view. In order to effectively limit the movement range of the control arm, at least in the vertical direction, it is proposed to use the maximum retracted and extended positions of the hydraulic cylinder as stops.A lower stop is particularly advantageous for limiting the range of movement of the control arm when following the soil contour while the spreading machine is working or when the spreading machine is being lifted at the headland of a field. A stop to limit the deflection movements of a control arm is also useful for road transport of a spreading machine. In order to reduce the working width of a spreading machine to a roadworthy transport width, it is often necessary to fold the share tools upwards. In this case, a control arm can move approximately or exactly horizontally without a stop, and deflection movements of a control arm could therefore increase the transport width of the spreading machine again. A stop can prevent uncontrolled folding of share tools from a transport position beyond a desired maximum position.An upper stop is also useful to limit the range of movement of the handlebar arm when copying the floor contour.

[0017] According to one embodiment of the invention, the first mounting point is designed to be fixed. The first mounting point is the lower vertical stop of the hydraulic cylinder on the link arm. Since the position of the first mounting point is an important criterion for the defined geometries of the share tool's range of motion when adapting to the contours during work, for the lifting height at the headland, and for the outer width of the share tool in the transport position, it is advantageous if the spatial position of the first mounting point does not change when the angle of attack of the hydraulic cylinder is changed. The angle of attack of the hydraulic cylinder is then only changed via mounting points for the second end of the hydraulic cylinder, which are in a different spatial position to one another.

[0018] According to one embodiment of the invention, several mounting interfaces are formed for the second mounting point on the blade frame side, which are located on a circular path around the first mounting point. With a fixed first mounting point, the movement profiles and movement geometries change only slightly if the mounting interfaces for the second mounting point are located on a circular path around the first mounting point. Nevertheless, it is possible to set different angles of attack for the hydraulic cylinder.

[0019] According to one embodiment of the invention, the mounting interface for the first and / or second mounting point is formed on a mounting part that, as a separate component, is detachably connected to the application machine in at least a first or a second orientation. The spatial position of the mounting interface differs depending on the orientation of the mounting part. The separate mounting part can, for example, be designed as a mounting plate from which a tab protrudes, on which a mounting interface is formed.In the case of a spatial orientation of the tab which is not mirror-symmetrical, as seen from a central plane intersecting the fastening points in the form of screws, the mounting interface and thus also the mounting point defined thereby are in a different spatial position when the fastening plate is fastened to the spreading machine in a first orientation or in a second orientation in which the fastening plate has been rotated, for example, by 180° around its vertical axis.If the mounting plate is attached to the spreading machine with one or two screws, the coulter pressure for a coulter tool can be changed by loosening the two screws, separating the hydraulic cylinder from the mounting part at the mounting interface, rotating the mounting plate to a different orientation and screwing it to the spreading machine in this orientation, and then reconnecting the hydraulic cylinder to the mounting part at the mounting interface. Such a conversion can be carried out quickly and easily in just a few minutes. No separate parts need to be stored and installed for a conversion; the existing components can be used to change the mounting point.

[0020] According to one embodiment of the invention, the working pressure of the hydraulic cylinders serving as adjustment drives is adjustable via a hydraulic valve that controls the volume flow and / or the working pressure in a hydraulic line to which the hydraulic cylinders serving as adjustment drives are jointly connected. With the proposed solution, the share tools can be adjusted to a desired working pressure, and thus also to a desired ground contact force, in a conventional manner by actuating a hydraulic valve acting on the common hydraulic line with all hydraulic cylinders connected to the common hydraulic line. The mechanical engineering effort required for this and the

[0021] Operating effort remains at the same level as before. Increased construction costs for the machine hydraulics are avoided.

[0022] According to one embodiment of the invention, the working pressure of the hydraulic cylinders serving as adjustment drives is adjustable via a machine hydraulic system with at least a first and a second hydraulic line which have a different pressure level, the hydraulic cylinders serving as adjustment drives are optionally connected to the first or second hydraulic line, and the working pressure of the hydraulic cylinders connected to the first or second hydraulic line is adjustable via a hydraulic valve which controls the volume flow and / or the working pressure in the first or second hydraulic line.

[0023] Further advantages and details emerge from the dependent claims and an embodiment illustrated in the drawings with further details. They show:

[0024] Fig. 1 : a view of a partial view of a seed drill as a

[0025] Example of a spreading machine from a view diagonally from behind,

[0026] Fig. 2A: the handlebar arm shown in Fig. 1 in an enlarged view with a second mounting point in a lower first position,

[0027] Fig. 2B: the handlebar arm shown in Fig. 2A with the second mounting point in a higher second position,

[0028] Fig. 3: a view of a mounting part in a first orientation, and

[0029] Fig. 4: a view of the mounting part shown in Fig. 3 in a second

[0030] Alignment.

[0031] The illustrations essentially represent specific embodiments. However, the invention is not limited to the illustrated embodiments, but can be modified by those skilled in the art to adapt it to a specific application.

[0032] Where appropriate, corresponding components are designated with identical reference numerals in all figures. For reasons of clarity, however, not all components appearing multiple times are always provided with reference numerals.

[0033] Fig. 1 shows a view of a seed drill as an exemplary embodiment of a sowing machine 2, viewed obliquely from the rear. The sowing machine 2 has a coulter frame 4 which extends in a direction transverse to the working direction A and to which a plurality of seed singling devices 6 are connected, distributed across the working width of the sowing machine 2, each of which is assigned to a drilling unit 8. The coulter frame 4 has frame brackets 54 which are detachably arranged on the coulter frame 4. A drilling unit 8 is pivotally arranged on each of the frame brackets 54. In the exemplary embodiment, a drilling unit 8 has at least one coulter tool 10, a pressure element 12 and a conveyor line 14 which guides the seeds singulated in the seed singling device 6 from the discharge opening 16 into the sowing furrow.In the illustrated embodiment, the coulter tools 10 consist of double disc coulters 18, which are held in an angled V-shape relative to one another and whose undersides penetrate into the soil to open a seed furrow there. The coulter tools 10 can be connected to a depth control device 20, which in the illustrated embodiment consists of a wheel that rolls over the soil laterally next to the seed furrow to scan the soil contour. Fertilizer coulters 22 with pressure wheels or other units can also be arranged upstream of the coulter tools 10. These units prepare the soil for sowing and, if necessary, introduce fertilizer into the soil before the seeds are placed in the seed furrow. In the present example, the pressure rollers of the upstream fertilizer coulter 22 preform and precompact soil furrows, into which the coulter tools 10 form the final furrow for seed placement.Deviating from the embodiment, other share tools than the double disc shares 18 shown can also be used in a spreading machine.

[0034] The share tool 10 is pivotally connected to a first end 26 of at least one guide arm 24 extending in the working direction A of the spreading machine 2 and pivotable in the vertical direction. The pivoting movement of the guide arm 24 in the vertical direction is indicated by a double arrow in Fig. 1. At its second end 28, the guide arm 24 is pivotally connected to the share frame 4 or the frame bracket 54.

[0035] The link arm 24 is shown in an enlarged view in Fig. 2A and Fig. 2B. The link arm 24 is connected in an articulated manner via a first mounting point 36 to a first end 32 of a hydraulic cylinder 30 serving as an adjustment drive, which is supported with a second end 34 via a second mounting point 38 in an articulated manner on the share frame 4 or the frame console 54. In Fig. 2A and Fig. 2B, the hydraulic cylinder 30 is shown at two different angles of attack in relation to the link arm 24 and the share frame 4, with the link arm 24 being at the same angular position to the share frame 4. In the spreading machine 2, at least one hydraulic cylinder 30 per drilling unit 8 is mounted in this way. It is also conceivable that exactly one hydraulic cylinder 30 is mounted per drilling unit 8. The two different angles of attack result from the variable spatial position of the second mounting point 38 in relation to the share frame 4 or the frame console 54.Because the second mounting point 38a is lower in the vertical direction in a first position than the second mounting point 38b in a second position, the hydraulic cylinder 30 is at a flatter angle of attack to the control arm 24a when it is connected to the share frame 4 or the frame console 54 via the lower second mounting point 38a instead of the higher second mounting point 38b. If the hydraulic cylinder 30 is connected to the share frame 4 or the frame console 54 via the higher second mounting point 38b, a steeper angle of attack to the control arm 24a results, at which the force with which the control arm with the connected share tool 10 is pressed onto the ground is greater than when the hydraulic cylinder 30 is attached via the lower second mounting point 38a.In the exemplary embodiment, only two different second mounting points 38a, 38b are shown; however, more than two mounting points 38 can, of course, be formed in a spreading machine 2. For example, a mounting part 48 can have two differently arranged mounting interfaces 46 (Fig. 1).

[0036] Deviating from or in addition to the exemplary embodiment, the first

[0037] At the end 26 of the control arm 24, several mounting points 36 can be formed in order to position the hydraulic cylinder 30 at different angles of engagement with the control arm 24. If several control arms 24a, 24b are formed in a spreading machine, the hydraulic cylinder 30 can also engage a control arm other than the lowermost control arm 24a, and it is possible to form different mounting points 36 on different control arms 24a, 24b.

[0038] In the illustrated embodiment, the link arm 24a, together with the second link arm 24b, forms part of a four-bar linkage parallelogram 40, to whose end facing away from the share frame 4 the share tool 10 is connected. The two link arms 24a, 24b are connected by their first ends 26a, 26b via pivot joints 42 in an articulated manner to a bracket 44 to which the share tool 10 is connected. The two link arms 24a, 24b are each connected by their second ends 28a, 28b in an articulated manner to the share frame 4 and the frame bracket 54, respectively. Via the parallelogram 40, the share tool 10 can follow an uneven ground contour by upward and downward movements when the spreading machine 2 is moved across a field.

[0039] Fig. 3 shows a view of the area in which the second end 34 of the hydraulic cylinder 30 is connected to the share frame 4 or the frame console 54 via a mounting interface 46. To enable a better representation of the mounting part 48, the hydraulic cylinder 30 is not shown in this view. In the view shown in Fig. 3, the mounting part 48 is in a first orientation. The fastening plate 50 is detachably fastened, for example with screws, to the share frame 4 or the frame console 54 arranged on the share frame 4. A tab 52 protrudes from the fastening plate 50 and points downwards in the first orientation of the mounting part 48. At the lower end of the tab 52 is the mounting interface 46, which in the exemplary embodiment is designed as a through-opening.A retaining bolt can be passed through the through-hole, via which the second end 34 of the hydraulic cylinder 30 is connected to the share frame 4 or the frame bracket 54. In this way, the mounting interface 46 forms a first position for the second mounting point 38 in the first orientation of the mounting part 48 shown in Fig. 3.

[0040] Fig. 4 shows a view of the mounting part 48 shown in Fig. 3 in a second orientation. In this orientation, the mounting part 48 is fastened to the share frame 4 or the frame console 54 rotated by 180° compared to the orientation shown in Fig. 3. Since the tab 52 does not stand exactly perpendicular to the fastening plate 50 in a vertical plane, in particular in the working direction A, but rather at an angle to it, the tab 52 is now oriented in an approximately horizontal direction in the second orientation of the mounting part 48. In a direction substantially transverse to the working direction, the tab 52 is arranged substantially perpendicular to the fastening plate 50. In the second orientation of the mounting part 48, the mounting interface 46, in its spatial position, forms a second position for the second mounting point 38. The spatial position of the second mounting point 38 can be changed via the respective orientation of the mounting part 48.According to one embodiment of the invention, a single-acting hydraulic cylinder 30 is used as the adjustment drive. This cylinder is connected to a hydraulic line that can be optionally pressurized or depressurized via a hydraulic valve. With this configuration, the mechanical engineering effort required to generate coulter pressure can be kept to a minimum. Single-acting hydraulic cylinders 30 are more cost-effective than those with a double effect. The single hydraulic line is inexpensive to manufacture and install. Finally, a simple hydraulic valve is sufficient to optionally pressurize the hydraulic line or depressurize it.

[0041] List of reference numbers

[0042] Spreading machine share frame

[0043] Seed singulating device

[0044] 8 Drill Unit

[0045] 10 share tool

[0046] 12 Pressure element

[0047] 14 Conveyor line

[0048] 16 Discharge opening

[0049] 18 double disc coulter

[0050] 20 Depth control device

[0051] 22 fertilizer share

[0052] 24 handlebar arm

[0053] 26 first end of handlebar arm

[0054] 28 second end of handlebar arm

[0055] 30 hydraulic cylinders

[0056] 32 first end hydraulic cylinder

[0057] 34 second end hydraulic cylinder

[0058] 36 first mounting point

[0059] 38 second mounting point

[0060] 40 Parallelogram

[0061] 42 Swivel joint

[0062] 44 Console

[0063] 46 Mounting interface

[0064] 48 Assembly part

[0065] 50 mounting plate

[0066] 52 tab

[0067] 54 frame console

[0068] A working direction

Claims

Patent claims 1 . Spreading machine (2) for spreading seed and / or fertilizer, comprising a plurality of share tools (10) arranged on a share frame (4) aligned transversely to the working direction (A) for depositing the seed and / or fertilizer in the soil, each share tool (10) being pivotably connected to a first end (26) of at least one guide arm (24) extending in the working direction (A) of the spreading machine (2) and pivotable in the vertical direction, the guide arm (24) being pivotably connected to a second end (28) of the share frame (4) and / or to a frame bracket (54) arranged on the share frame (4), and the guide arm (24) being pivotably connected via a first mounting point (36) to a first end (32) of a hydraulic cylinder (30) serving as an adjustment drive, which hydraulic cylinder is pivotably connected to the share frame via a second mounting point (38) with a second end (34) (4) and / or the frame console (54), wherein at the mounting points (36,38) a mounting interface (46) is formed from the hydraulic cylinder (30) to the share frame (4), the frame console (54) or the control arm (24), characterized in that the spatial position of the first mounting point (36) in relation to the share frame (4) and / or the frame console (54) and / or the spatial position of the second mounting point (38) in relation to the control arm (24) is variable, so that with the same angular position of the control arm (24) to the share frame (4) and / or the frame console (54) a different, Adjusts the angle of attack of the hydraulic cylinder (30) to the control arm (24) and share frame (4) and / or frame console (54).

2. Spreading machine (2) according to claim 1, characterized in that the control arm (24) is a component of a four-jointed parallelogram (40), to the end of which, facing away from the share frame (4) or the frame console (54), the share tool (10) is connected.

3. Spreading machine (2) according to claim 1 or 2, characterized in that the hydraulic cylinder (30) serving as an adjustment drive forms a stop for a deflection movement of the control arm (24) in the vertical direction to the ground in its shortest and longest extended position.

4. Spreading machine (2) according to one of the preceding claims, characterized in that the first mounting point (36) is designed to be non-variable.

5. Spreading machine (2) according to claim 4, characterized in that for the second mounting point (38) on the share frame side, several mounting interfaces (46) are formed, which are located on a circular path around the first mounting point (36).

6. Spreading machine (2) according to one of the preceding claims, characterized in that the mounting interface (46) for the first and / or second Mounting point (36, 38) is formed on a mounting part (48) which, as a separate component, is detachably connected to the spreading machine (2) in at least a first or a second orientation, wherein the spatial position of the mounting interface (46) differs from one another depending on the orientation of the mounting part (48).

7. Spreading machine (2) according to one of the preceding claims, characterized in that the working pressure of the hydraulic cylinders (30) serving as adjustment drives is adjustable via a hydraulic valve which controls the volume flow and / or the working pressure in a hydraulic line to which the hydraulic cylinders (30) serving as adjustment drives are jointly connected.

8. Spreading machine (2) according to one of the preceding claims 1 to 6, characterized in that the working pressure of the hydraulic cylinders (30) serving as adjustment drives is adjustable via a machine hydraulic system with at least a first and a second hydraulic line which have a different pressure level, the hydraulic cylinders (30) serving as adjustment drives are optionally connected to the first or second hydraulic line, and the working pressure of the hydraulic cylinders (30) connected to the first or second hydraulic line is adjustable via a hydraulic valve which controls the volume flow and / or the working pressure in the first or second hydraulic line.

9. Spreading machine (2) according to one of the preceding claims, characterized in that a single-acting hydraulic cylinder is used as the adjustment drive (30) is used, which is connected to a hydraulic line which is optionally pressurised or depressurised via a hydraulic valve.

Images