CA3223283A1 - Agricultural machine and agricultural machine combination - Google Patents
Agricultural machine and agricultural machine combination Download PDFInfo
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- CA3223283A1 CA3223283A1 CA3223283A CA3223283A CA3223283A1 CA 3223283 A1 CA3223283 A1 CA 3223283A1 CA 3223283 A CA3223283 A CA 3223283A CA 3223283 A CA3223283 A CA 3223283A CA 3223283 A1 CA3223283 A1 CA 3223283A1
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- support wheel
- agricultural machine
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- hydraulic system
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- 230000008878 coupling Effects 0.000 claims abstract description 20
- 238000010168 coupling process Methods 0.000 claims abstract description 20
- 238000005859 coupling reaction Methods 0.000 claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 230000007704 transition Effects 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 3
- 229920000136 polysorbate Polymers 0.000 claims 1
- 238000009331 sowing Methods 0.000 claims 1
- 238000003971 tillage Methods 0.000 claims 1
- 239000002689 soil Substances 0.000 description 15
- 239000012530 fluid Substances 0.000 description 7
- 230000007423 decrease Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B63/00—Lifting or adjusting devices or arrangements for agricultural machines or implements
- A01B63/14—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements drawn by animals or tractors
- A01B63/16—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements drawn by animals or tractors with wheels adjustable relatively to the frame
- A01B63/22—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements drawn by animals or tractors with wheels adjustable relatively to the frame operated by hydraulic or pneumatic means
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B63/00—Lifting or adjusting devices or arrangements for agricultural machines or implements
- A01B63/02—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors
- A01B63/10—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means
- A01B63/11—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means for controlling weight transfer between implements and tractor wheels
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Zoology (AREA)
- Agricultural Machines (AREA)
Abstract
The invention relates to an agricultural machine to be hitched to a tractor, the machine comprising the following features: a frame (2); work tools (1), which are arranged on the frame (2) and can be moved between a working position and a transport position; a coupling device, which, for hitching to a tractor, is designed to couple to a tractor-side coupling device; and a support wheel device (3), which is designed to support the frame (2) together with the work tools (1) during a transport journey, when the work tools (1) are arranged in the transport position. The support wheel device (3) comprises the following: a support wheel (6), which rolls on the ground during the transport journey; a carrier means (4), by means of which the support wheel (6) is arranged on the frame (2) and can be moved into various positions with respect to the frame (2) for the transport journey; and a hydraulic system (10), which is connected to the carrier means (4) and is designed to allow deflection of the support wheel (6) during the transport journey by moving the support wheel out of an extended position into a contrastingly deflected position of the various positions counter to a counterforce provided by the hydraulic system (10). A supporting force provided by the support wheel device (3) during the transport journey is substantially equal in the extended and the deflected position. The invention also relates to an agricultural machine combination, which comprises a tractor and the agricultural machine that is connected to the tractor.
Description
Agricultural machine and agricultural machine combination The invention relates to an agricultural machine and an agricultural machine combination.
Background Agricultural machines that are hitched to a tractor are usually configured for use in fields, on the one hand, and for transport on roads and tracks, on the other. Such machines include, for example, soil cultivating machines and spraying machines, but also seed drills and mowing machines. The respective agricultural machine is prepared for its corresponding purpose with the aid of work tools.
Work tools that are arranged on a frame of the agricultural machine can regularly be moved between a working position and a transport position, whether this is by means of individually moving the work tool and/or moving parts of the frame on which the work tools are arranged.
In the working position, the work tools are positioned so as to carry out work or cultivation corresponding to the respective purpose of the agricultural machine. The work tools are positioned in the transport position when the agricultural machine is not moved by means of the tractor for agricultural work, but for transporting the agricultural machine, for example on roads or tracks. In conjunction with soil cultivation tools, this means, for example, that the soil cultivation tools are usually raised and thus removed from the ground, whereas the soil cultivation tools in the working position come into contact with the ground in order to carry out the soil cultivation. The situation is similar, for example, with work tools of a mowing machine, which can also be moved into a transport position.
For such agricultural machines, it is known to use a support or transport wheel device with one or more support or transport wheels in the transport position, which roll on the ground during a transport journey and thus support the frame with the work tools. The frame with the work tools of the agricultural machine is then supported by the tractor-side coupling device, via which the agricultural machine is coupled to the tractor, on the one hand, and the support wheel device, on the other, for the transport journey. It can be provided during field work with the agricultural machine, when the work tools are in the working position, to lift out or fold in one or more support wheels so that they are not in contact with the ground. In contrast, the support wheel is folded out or extended for the transport journey so that it comes into contact with the ground.
The support of the frame with the work tools during the transport journey on the tractor-side coupling device, on the one hand, and by means of one or more support or transport wheels, on the other hand, leads to different loads on the tractor-side coupling device by the coupled agricultural machine during a transport journey over uneven ground. This can lead to the axle load distribution for the tractor being impaired, which negatively affects the driving stability of the agricultural machine combination with a tractor and agricultural machine coupled thereto.
Document EP 2 289 295 Al discloses a cultivation assembly consisting of a soil cultivation device with linkage points arranged on a support frame for attachment to a tractor three-point linkage, wherein side frames, side frames with soil cultivation tools and associated trailing rollers are arranged on the support frame. The soil cultivation device consists of several device units which, together with the trailing rollers, can be pivoted around horizontal axes and folded into the support frame. The device consists of two side frames carrying soil cultivation tools arranged directly next to each other, each of which can be pivoted into a transport position together with the trailing rollers. It is provided that a narrow central roller element is arranged on the support frame in the centre of the cultivation assembly between the trailing rollers associated with the respective side frames.
Document FR 2 886 511 Al discloses a soil cultivating machine with at least one trailed lifting frame, which operates at an adjustable depth in the ground, at least on the ground, by means of a reference member coupled thereto. The chassis of this reference member with a roller is a series of wheels with tyres made of a flexible material in the transport and working position of the frame. The transport and feeler wheels of the reference element are mounted independently, either individually or in groups.
Document EP 2 232 974 Al discloses an agricultural device that can be coupled to the coupling element of a tractor and that has at least one support device arranged on the side of the device facing away from the coupling element and having at least one running wheel, which support device is arranged so as to be movable relative to the device via a linkage with the frame of the device. The linkage is associated with a lifting element that is effective in two directions, with which the support device can be optionally lifted off the ground and pressed against the ground for at least partial lifting of the device or parts of the device during transport. The linkage is designed as the support device which, when raised, can be moved in the direction of the coupling element and/or the tractor and above the frame of the device.
Document EP 3 242 543 discloses an agricultural implement with additional running gear, which is carried in the three-point hydraulic system of a towing vehicle and improves the
Background Agricultural machines that are hitched to a tractor are usually configured for use in fields, on the one hand, and for transport on roads and tracks, on the other. Such machines include, for example, soil cultivating machines and spraying machines, but also seed drills and mowing machines. The respective agricultural machine is prepared for its corresponding purpose with the aid of work tools.
Work tools that are arranged on a frame of the agricultural machine can regularly be moved between a working position and a transport position, whether this is by means of individually moving the work tool and/or moving parts of the frame on which the work tools are arranged.
In the working position, the work tools are positioned so as to carry out work or cultivation corresponding to the respective purpose of the agricultural machine. The work tools are positioned in the transport position when the agricultural machine is not moved by means of the tractor for agricultural work, but for transporting the agricultural machine, for example on roads or tracks. In conjunction with soil cultivation tools, this means, for example, that the soil cultivation tools are usually raised and thus removed from the ground, whereas the soil cultivation tools in the working position come into contact with the ground in order to carry out the soil cultivation. The situation is similar, for example, with work tools of a mowing machine, which can also be moved into a transport position.
For such agricultural machines, it is known to use a support or transport wheel device with one or more support or transport wheels in the transport position, which roll on the ground during a transport journey and thus support the frame with the work tools. The frame with the work tools of the agricultural machine is then supported by the tractor-side coupling device, via which the agricultural machine is coupled to the tractor, on the one hand, and the support wheel device, on the other, for the transport journey. It can be provided during field work with the agricultural machine, when the work tools are in the working position, to lift out or fold in one or more support wheels so that they are not in contact with the ground. In contrast, the support wheel is folded out or extended for the transport journey so that it comes into contact with the ground.
The support of the frame with the work tools during the transport journey on the tractor-side coupling device, on the one hand, and by means of one or more support or transport wheels, on the other hand, leads to different loads on the tractor-side coupling device by the coupled agricultural machine during a transport journey over uneven ground. This can lead to the axle load distribution for the tractor being impaired, which negatively affects the driving stability of the agricultural machine combination with a tractor and agricultural machine coupled thereto.
Document EP 2 289 295 Al discloses a cultivation assembly consisting of a soil cultivation device with linkage points arranged on a support frame for attachment to a tractor three-point linkage, wherein side frames, side frames with soil cultivation tools and associated trailing rollers are arranged on the support frame. The soil cultivation device consists of several device units which, together with the trailing rollers, can be pivoted around horizontal axes and folded into the support frame. The device consists of two side frames carrying soil cultivation tools arranged directly next to each other, each of which can be pivoted into a transport position together with the trailing rollers. It is provided that a narrow central roller element is arranged on the support frame in the centre of the cultivation assembly between the trailing rollers associated with the respective side frames.
Document FR 2 886 511 Al discloses a soil cultivating machine with at least one trailed lifting frame, which operates at an adjustable depth in the ground, at least on the ground, by means of a reference member coupled thereto. The chassis of this reference member with a roller is a series of wheels with tyres made of a flexible material in the transport and working position of the frame. The transport and feeler wheels of the reference element are mounted independently, either individually or in groups.
Document EP 2 232 974 Al discloses an agricultural device that can be coupled to the coupling element of a tractor and that has at least one support device arranged on the side of the device facing away from the coupling element and having at least one running wheel, which support device is arranged so as to be movable relative to the device via a linkage with the frame of the device. The linkage is associated with a lifting element that is effective in two directions, with which the support device can be optionally lifted off the ground and pressed against the ground for at least partial lifting of the device or parts of the device during transport. The linkage is designed as the support device which, when raised, can be moved in the direction of the coupling element and/or the tractor and above the frame of the device.
Document EP 3 242 543 discloses an agricultural implement with additional running gear, which is carried in the three-point hydraulic system of a towing vehicle and improves the
2 steering ability of the vehicle with an additional spring-loaded support wheel. A dead centre mechanism lifts the support wheel with spring force when the implement is in the working position.
Document DE 10 224 861 Al describes an agricultural device that can be coupled to the three-point linkage of a tractor and having at least one support wheel arranged on the rear of the device, which support wheel is arranged so as to be movable in an upright direction relative to the device via a linkage with the frame of the device. The linkage is associated with a double-acting hydraulic cylinder, with which the support wheel can be optionally lifted off the ground and pressed against the ground to relieve the three-point linkage and reduce the rear wheel load of the tractor. The two chambers of the hydraulic cylinder are each connected to a hydraulic system with a line. An accumulator element and an unlockable shut-off element are arranged in the hydraulic line leading to the chamber of the hydraulic cylinder that presses the support wheel against the ground.
Document EP 2 988 584 discloses a soil cultivation device, which is provided with a chassis, which carries part of the weight of an additional soil cultivation device.
Document EP 1 466 516 Al discloses an agricultural trailer implement, which has a frame to be hitched to a tractor using a three-point linkage with two lower hitching points and one upper hitching point. The device has two chassis that are connected to the frame to allow folding around a joint. An implement is mounted on each chassis. A wheel frame is connected to the main frame via a second swivel joint, which is controlled by a hydraulic actuator.
Document EP 2 422 598 A2 discloses a soil cultivation combination with at least one towing vehicle and a towed agricultural soil cultivation device and/or seeder, which has at least one transport axle with variable height adjustment and at least two running wheels, which is connected to a device frame via at least one joint. A damping device arranged between the device frame and the height-adjustable transport axle is provided, wherein the transport axle forms a vibration absorber.
Document US 10,638,653 B2 discloses a caster assembly, which has a frame and is configured to be pivotally coupled with a tool bar. Furthermore, a sub-frame rotatably connected to the frame and a connecting linkage configured to control the movement of the frame relative to the tool bar are provided. The caster assembly comprises a locking assembly, which has a locking lever moveably coupled to the frame. The locking lever has a locking element and a release element. A locking structure fixedly coupled with the auxiliary frame and
Document DE 10 224 861 Al describes an agricultural device that can be coupled to the three-point linkage of a tractor and having at least one support wheel arranged on the rear of the device, which support wheel is arranged so as to be movable in an upright direction relative to the device via a linkage with the frame of the device. The linkage is associated with a double-acting hydraulic cylinder, with which the support wheel can be optionally lifted off the ground and pressed against the ground to relieve the three-point linkage and reduce the rear wheel load of the tractor. The two chambers of the hydraulic cylinder are each connected to a hydraulic system with a line. An accumulator element and an unlockable shut-off element are arranged in the hydraulic line leading to the chamber of the hydraulic cylinder that presses the support wheel against the ground.
Document EP 2 988 584 discloses a soil cultivation device, which is provided with a chassis, which carries part of the weight of an additional soil cultivation device.
Document EP 1 466 516 Al discloses an agricultural trailer implement, which has a frame to be hitched to a tractor using a three-point linkage with two lower hitching points and one upper hitching point. The device has two chassis that are connected to the frame to allow folding around a joint. An implement is mounted on each chassis. A wheel frame is connected to the main frame via a second swivel joint, which is controlled by a hydraulic actuator.
Document EP 2 422 598 A2 discloses a soil cultivation combination with at least one towing vehicle and a towed agricultural soil cultivation device and/or seeder, which has at least one transport axle with variable height adjustment and at least two running wheels, which is connected to a device frame via at least one joint. A damping device arranged between the device frame and the height-adjustable transport axle is provided, wherein the transport axle forms a vibration absorber.
Document US 10,638,653 B2 discloses a caster assembly, which has a frame and is configured to be pivotally coupled with a tool bar. Furthermore, a sub-frame rotatably connected to the frame and a connecting linkage configured to control the movement of the frame relative to the tool bar are provided. The caster assembly comprises a locking assembly, which has a locking lever moveably coupled to the frame. The locking lever has a locking element and a release element. A locking structure fixedly coupled with the auxiliary frame and
3 a drive element fixedly connected to the connecting linkage are provided. The locking element is configured to block a rotation of the auxiliary frame relative to the frame whilst the locking element engages with the locking structure, and the drive element is configured to contact the release element when the connecting linkage moves the frame downwardly relative to the frame to drive the locking element and release the locking structure.
Summary The object of the invention is to provide an agricultural machine and an agricultural machine combination with a tractor and agricultural machine, which assist safe driving during a transport journey.
This object is achieved by an agricultural machine to be hitched to a tractor as well as an agricultural machine combination according to independent Claims 1 and 13.
Embodiments are the subject of dependent claims.
According to one aspect, an agricultural machine to be hitched to a tractor is provided, which has the following: a frame; work tools, which are arranged on the frame and can be moved between a working position and a transport position; a coupling device, which, for hitching to a tractor, is configured to be coupled to a tractor-side coupling device; and a support wheel device, which is configured to support the frame together with the work tools during a transport journey, when the work tools are arranged in the transport position. The support wheel device comprises the following: a support wheel, which rolls on the ground during the transport journey, a carrier means, by means of which the support wheel is arranged on the frame and can be moved into various positions with respect to the frame for the transport journey, and a hydraulic system, which is connected to the carrier means and is configured to allow resilient deflection of the support wheel during the transport journey by moving the support wheel out of an extended position into a contrastingly resiliently deflected position of the various positions counter to a counterforce provided by the hydraulic system. A supporting force provided by the support wheel device during the transport journey is substantially the same in the extended and the resiliently deflected position.
According to a further aspect, an agricultural machine combination with a tractor and an agricultural machine with the aforementioned design is provided, which is connected to the tractor.
Summary The object of the invention is to provide an agricultural machine and an agricultural machine combination with a tractor and agricultural machine, which assist safe driving during a transport journey.
This object is achieved by an agricultural machine to be hitched to a tractor as well as an agricultural machine combination according to independent Claims 1 and 13.
Embodiments are the subject of dependent claims.
According to one aspect, an agricultural machine to be hitched to a tractor is provided, which has the following: a frame; work tools, which are arranged on the frame and can be moved between a working position and a transport position; a coupling device, which, for hitching to a tractor, is configured to be coupled to a tractor-side coupling device; and a support wheel device, which is configured to support the frame together with the work tools during a transport journey, when the work tools are arranged in the transport position. The support wheel device comprises the following: a support wheel, which rolls on the ground during the transport journey, a carrier means, by means of which the support wheel is arranged on the frame and can be moved into various positions with respect to the frame for the transport journey, and a hydraulic system, which is connected to the carrier means and is configured to allow resilient deflection of the support wheel during the transport journey by moving the support wheel out of an extended position into a contrastingly resiliently deflected position of the various positions counter to a counterforce provided by the hydraulic system. A supporting force provided by the support wheel device during the transport journey is substantially the same in the extended and the resiliently deflected position.
According to a further aspect, an agricultural machine combination with a tractor and an agricultural machine with the aforementioned design is provided, which is connected to the tractor.
4 The support or transport wheel device supports with the support or transport wheel in different positions of the carrier means, which then correspond to different positions of the support wheel in relation to the frame, with constant force. One or more support or transport wheels can be provided. If the frame with the work tools, on which other parts or components of the agricultural machine can optionally be arranged, is supported solely on the tractor-side coupling device, on the one hand, and the one or more support wheels, on the other hand, during the transport journey, the substantially same supporting force provided by means of the support wheel device in the various positions causes a substantially constant load on the tractor-side coupling device due to the support of the agricultural machine thereon, whereby the coupled agricultural machine does not impair the axle load distribution for the tractor during the transport journey, in particular including not when travelling over uneven ground when the support wheel resiliently deflects. It is also ensured that permissible axle loads on the tractor are not exceeded. This helps ensure a safe transport journey on roads and tracks.
Operator comfort is enhanced for the driver of the tractor. It is not necessary to loosen the top link of a coupling of the agricultural machine to the tractor in order to maintain an even axle load distribution.
The agricultural machine can have work tools of one or more types of work tools. In one embodiment, a plurality of rows or arrangements of identical or different works tools can be arranged one behind the other in the direction of travel and extending transversely thereto.
The support wheel device is assigned to the rows or arrangements together.
The support wheel can be moved into at least one further resiliently deflected position of the various positions, which is different from the resiliently deflected position, when it is resiliently deflected relative to the extended position, wherein the supporting force provided by the support wheel device during the transport journey is substantially the same in the extended and the further resiliently deflected position. In this way, the support or transport wheel can (resiliently) deflect into a plurality of resiliently deflected positions during the transport journey, wherein the supporting force provided by the support wheel device for the frame with the work tools is substantially the same both in the extended and in the various (resiliently) deflected positions.
The extended position can form an end position for moving the support wheel into the various positions, in which end position the support wheel is fully extended. In this embodiment, the supporting force provided by the support device during the transport journey is constant, starting from the fully extended position of the support wheel during resilient deflection.
Operator comfort is enhanced for the driver of the tractor. It is not necessary to loosen the top link of a coupling of the agricultural machine to the tractor in order to maintain an even axle load distribution.
The agricultural machine can have work tools of one or more types of work tools. In one embodiment, a plurality of rows or arrangements of identical or different works tools can be arranged one behind the other in the direction of travel and extending transversely thereto.
The support wheel device is assigned to the rows or arrangements together.
The support wheel can be moved into at least one further resiliently deflected position of the various positions, which is different from the resiliently deflected position, when it is resiliently deflected relative to the extended position, wherein the supporting force provided by the support wheel device during the transport journey is substantially the same in the extended and the further resiliently deflected position. In this way, the support or transport wheel can (resiliently) deflect into a plurality of resiliently deflected positions during the transport journey, wherein the supporting force provided by the support wheel device for the frame with the work tools is substantially the same both in the extended and in the various (resiliently) deflected positions.
The extended position can form an end position for moving the support wheel into the various positions, in which end position the support wheel is fully extended. In this embodiment, the supporting force provided by the support device during the transport journey is constant, starting from the fully extended position of the support wheel during resilient deflection.
5 The retracted position and / or the further retracted position can be different from an end position opposite the extended position, in which the support wheel is fully (resiliently) deflected. Alternatively, the retracted or the further retracted position corresponds to the opposite fully deflected end position.
With the agricultural machine, it can be provided that a force provided by the hydraulic system is different in the extended position and the resiliently deflected position and that a degree of efficiency of a conversion of the force provided by means of the hydraulic system into the supporting force is different in the extended and the resiliently deflected position. In order to provide substantially the same supporting force of the support wheel device, during the transport journey during the transition between the extended and the resiliently deflected position, the degree of efficiency for the conversion of the force provided by the hydraulic system into the (resulting) supporting force is inversely proportional to the change in the force provided by the hydraulic system. A force is provided by the hydraulic system that counteracts the (resilient) deflection of the support wheel. The extent to which or the degree of efficiency with which the force provided by the hydraulic system is converted into the resulting (substantially constant) supporting force is different for the extended and the resiliently deflected position. Both the force provided by the hydraulic system and the degree of efficiency of the force conversion for providing the supporting force thus differ for the extended and the resiliently deflected position. The changes in the force provided and the degree of efficiency of the conversion are inversely proportional. If, for example, the degree of efficiency of the force conversion decreases during the transition from the extended to the resiliently deflected position, the force provided by the hydraulic system increases such that in total, i.e. as a result, the supporting force provided at the support wheel device (resultant force) remains substantially the same.
During the transition between the extended and the resiliently deflected position, a linear (inverse) proportionality can be formed for the degree of efficiency in relation to the change in the force provided by the hydraulic system. Alternatively, a non-linear proportionality can be formed.
The carrier means can have a support arm, to which the support wheel is connected and which can be pivoted about a pivot axis into various pivot positions in relation to the frame during the transport journey such that the support wheel can be moved into the various positions. The extended position and the resiliently deflected positions are associated with respective pivot positions of the pivot arm about the pivot axis. The support wheel can be connected to the pivot arm via a support arm and a support arm holder. The reciprocity of the force provided by
With the agricultural machine, it can be provided that a force provided by the hydraulic system is different in the extended position and the resiliently deflected position and that a degree of efficiency of a conversion of the force provided by means of the hydraulic system into the supporting force is different in the extended and the resiliently deflected position. In order to provide substantially the same supporting force of the support wheel device, during the transport journey during the transition between the extended and the resiliently deflected position, the degree of efficiency for the conversion of the force provided by the hydraulic system into the (resulting) supporting force is inversely proportional to the change in the force provided by the hydraulic system. A force is provided by the hydraulic system that counteracts the (resilient) deflection of the support wheel. The extent to which or the degree of efficiency with which the force provided by the hydraulic system is converted into the resulting (substantially constant) supporting force is different for the extended and the resiliently deflected position. Both the force provided by the hydraulic system and the degree of efficiency of the force conversion for providing the supporting force thus differ for the extended and the resiliently deflected position. The changes in the force provided and the degree of efficiency of the conversion are inversely proportional. If, for example, the degree of efficiency of the force conversion decreases during the transition from the extended to the resiliently deflected position, the force provided by the hydraulic system increases such that in total, i.e. as a result, the supporting force provided at the support wheel device (resultant force) remains substantially the same.
During the transition between the extended and the resiliently deflected position, a linear (inverse) proportionality can be formed for the degree of efficiency in relation to the change in the force provided by the hydraulic system. Alternatively, a non-linear proportionality can be formed.
The carrier means can have a support arm, to which the support wheel is connected and which can be pivoted about a pivot axis into various pivot positions in relation to the frame during the transport journey such that the support wheel can be moved into the various positions. The extended position and the resiliently deflected positions are associated with respective pivot positions of the pivot arm about the pivot axis. The support wheel can be connected to the pivot arm via a support arm and a support arm holder. The reciprocity of the force provided by
6 the hydraulic system and the degree of efficiency of the force conversion during the transition between the various positions ensures that a torque equilibrium is maintained for the support arm on the pivot axis.
The hydraulic system can be connected to the pivot arm, forming a lever arm between a connection point, in which the hydraulic system is connected to the pivot arm, and the pivot axis. The force provided by the hydraulic system is applied to the pivot arm via the lever arm, which can be formed at least in sections in the longitudinal direction of the pivot arm starting from the pivot axis.
The hydraulic system can have a hydraulic cylinder, which is connected to the pivot arm at the connection point. In one embodiment, the force provided by the hydraulic system is applied to the pivot arm via the hydraulic cylinder, which in turn pivots about an associated hydraulic cylinder pivot axis spaced from the pivot axis, for example via a piston rod that can be coupled to the pivot arm and which is moved during operation together with the piston held in the hydraulic cylinder. The hydraulic cylinder thereby changes its position.
The degree of efficiency of the conversion of the force provided by means of the hydraulic system and applied to the lever arm of the carrier means is different due to different angular positions between the lever arm and a longitudinal direction of the hydraulic cylinder. The degree of efficiency of the conversion of the force applied or introduced to the carrier means via the lever arm depends on the angular position between the lever arm and the longitudinal direction of the hydraulic cylinder. In general, the greater the angle between the lever arm and the longitudinal direction of the hydraulic cylinder, the greater the degree of efficiency of the force conversion.
The hydraulic system can have a diaphragm accumulator or a piston accumulator.
The respective accumulator can be in fluid connection with the hydraulic cylinder.
The accumulator and hydraulic cylinder can form an open or a closed system depending on operation. In the case of a closed system, hydraulic fluid cannot flow back into the (superordinate) hydraulic system of the agricultural machine. If the carrier means moves into a resiliently deflected position, for example from the extended position, hydraulic fluid flows from the hydraulic cylinder, for example into the diaphragm accumulator, in which a gas volume is compressed, resulting in a higher back pressure such that the force provided by the hydraulic system increases, whereas the degree of efficiency of the conversion via the lever arm to the carrier means decreases due to the decrease in the angle.
The hydraulic system can be connected to the pivot arm, forming a lever arm between a connection point, in which the hydraulic system is connected to the pivot arm, and the pivot axis. The force provided by the hydraulic system is applied to the pivot arm via the lever arm, which can be formed at least in sections in the longitudinal direction of the pivot arm starting from the pivot axis.
The hydraulic system can have a hydraulic cylinder, which is connected to the pivot arm at the connection point. In one embodiment, the force provided by the hydraulic system is applied to the pivot arm via the hydraulic cylinder, which in turn pivots about an associated hydraulic cylinder pivot axis spaced from the pivot axis, for example via a piston rod that can be coupled to the pivot arm and which is moved during operation together with the piston held in the hydraulic cylinder. The hydraulic cylinder thereby changes its position.
The degree of efficiency of the conversion of the force provided by means of the hydraulic system and applied to the lever arm of the carrier means is different due to different angular positions between the lever arm and a longitudinal direction of the hydraulic cylinder. The degree of efficiency of the conversion of the force applied or introduced to the carrier means via the lever arm depends on the angular position between the lever arm and the longitudinal direction of the hydraulic cylinder. In general, the greater the angle between the lever arm and the longitudinal direction of the hydraulic cylinder, the greater the degree of efficiency of the force conversion.
The hydraulic system can have a diaphragm accumulator or a piston accumulator.
The respective accumulator can be in fluid connection with the hydraulic cylinder.
The accumulator and hydraulic cylinder can form an open or a closed system depending on operation. In the case of a closed system, hydraulic fluid cannot flow back into the (superordinate) hydraulic system of the agricultural machine. If the carrier means moves into a resiliently deflected position, for example from the extended position, hydraulic fluid flows from the hydraulic cylinder, for example into the diaphragm accumulator, in which a gas volume is compressed, resulting in a higher back pressure such that the force provided by the hydraulic system increases, whereas the degree of efficiency of the conversion via the lever arm to the carrier means decreases due to the decrease in the angle.
7 It can be provided that the support wheel can also be pivoted about a vertical pivot axis. This allows the support wheel to steer, especially when cornering.
In one embodiment, the supporting force provided by means of the support wheel device can be adjusted. For example, the hydraulic system can be configured to provide an adjustable basic or minimum counterforce that changes inversely proportionally to the degree of efficiency of the force conversion when moving between the positions of the support wheel, starting from the basic or minimum counterforce provided by the hydraulic system.
The work tools can comprise one or more of the following tools: soil cultivation tool, spraying tool, mowing tool, and seeding tool such as a seed unit.
Description of exemplary embodiments Further exemplary embodiments are explained below with reference to figures of a drawing.
In the figures:
Fig. 1 shows a schematic perspective view of an arrangement of work tools for a seed drill;
Fig. 2 shows a schematic perspective view of an arrangement for a rotary harrow;
Fig. 3 shows a schematic perspective view of an arrangement for a support or transport wheel device, wherein the support or transport wheel is arranged in a retracted position;
Fig. 4 shows a schematic perspective view of the arrangement shown in Fig. 3, wherein the support wheel is shown in an extended position;
Fig. 5 shows a schematic perspective view of the arrangement shown in Fig. 3, wherein the support wheel is shown in a partially deflected position; and Fig. 6 shows a graphical representation of the force and displacement components over time on a hydraulic cylinder when the support wheel is deflected from an extended position.
Fig. 1 shows a schematic illustration of an arrangement with work tools 1 for a seed drill, which is coupled to a tractor (not shown) for work in the fields and for transport.
The various work tools 1 are mounted in a plurality of rows transverse to the direction of travel on a frame 2.
Such arrangements of work tools 1 on the frame 2 are known as such in various embodiments.
Above the work tools 1, there is a support or transport wheel device 3 with a carrier means 4, which in the example shown is formed with a pivot arm 5, and a support or transport wheel 6 arranged on the carrier means 4. The pivot arm 5 is connected to the support wheel 6 and can
In one embodiment, the supporting force provided by means of the support wheel device can be adjusted. For example, the hydraulic system can be configured to provide an adjustable basic or minimum counterforce that changes inversely proportionally to the degree of efficiency of the force conversion when moving between the positions of the support wheel, starting from the basic or minimum counterforce provided by the hydraulic system.
The work tools can comprise one or more of the following tools: soil cultivation tool, spraying tool, mowing tool, and seeding tool such as a seed unit.
Description of exemplary embodiments Further exemplary embodiments are explained below with reference to figures of a drawing.
In the figures:
Fig. 1 shows a schematic perspective view of an arrangement of work tools for a seed drill;
Fig. 2 shows a schematic perspective view of an arrangement for a rotary harrow;
Fig. 3 shows a schematic perspective view of an arrangement for a support or transport wheel device, wherein the support or transport wheel is arranged in a retracted position;
Fig. 4 shows a schematic perspective view of the arrangement shown in Fig. 3, wherein the support wheel is shown in an extended position;
Fig. 5 shows a schematic perspective view of the arrangement shown in Fig. 3, wherein the support wheel is shown in a partially deflected position; and Fig. 6 shows a graphical representation of the force and displacement components over time on a hydraulic cylinder when the support wheel is deflected from an extended position.
Fig. 1 shows a schematic illustration of an arrangement with work tools 1 for a seed drill, which is coupled to a tractor (not shown) for work in the fields and for transport.
The various work tools 1 are mounted in a plurality of rows transverse to the direction of travel on a frame 2.
Such arrangements of work tools 1 on the frame 2 are known as such in various embodiments.
Above the work tools 1, there is a support or transport wheel device 3 with a carrier means 4, which in the example shown is formed with a pivot arm 5, and a support or transport wheel 6 arranged on the carrier means 4. The pivot arm 5 is connected to the support wheel 6 and can
8 be pivoted about a pivot axis 7, which is transverse to the direction of travel. In order to pivot the pivot arm 5, a hydraulic cylinder 8 is provided, which is coupled to the pivot arm 5 at a connection point 9, is pivotably mounted and, together with a diaphragm accumulator (not shown), is part of a hydraulic system 10, which is associated with the support wheel device 3.
A lever arm 11 is formed by means of the connection between the hydraulic cylinder 8 and the pivot arm 5, which extends from the pivot axis 7 to the connection point 9.
In the illustration in Fig. 1, the support wheel 6 is arranged in a non-working position above the work tools 1, which for their part are arranged in a working position for work in the fields. The support wheel 6 is in this non-working position for work in the fields, for example. In the event of a transport journey of the agricultural machine, i.e. it being transported by tractor on tracks or roads, the work tools 1 are raised by means of associated frame elements of the frame 2, for example are pivoted sideways and upwards so as to create a gap or opening beneath the support wheel 6 in order to move the support wheel 6 by pivoting it into a working position (towards the ground) associated with the support wheel 6 such that the support wheel is in contact with the ground and thus supports the frame 2 with the work tools 1 accommodated thereon for the transport journey. If the agricultural machine with the arrangement shown in Fig. 1 is connected to a tractor-side coupling device (not shown) in the usual manner, for example a three-point linkage, the frame 2 is supported, on the one hand, by the tractor-side coupling device and, on the other hand, by the support wheel device 3 during the transport journey with the work tools 1, in particular exclusively thereby.
Fig. 2 shows a schematic perspective illustration of an arrangement for a (solo) rotary harrow, in which work tools 1 are arranged on a gearbox 20. The rotary harrow can, for example, be combined with the arrangement of work tools 1 in such a way that an agricultural machine with an associated support wheel and a plurality of rows of work tools is created, in which the rows of work tools are arranged one behind the other in the direction of travel.
A connection can be established to the tractor-side coupling device (not shown) via a machine-side coupling device 21. The support wheel device 3 is also shown in a retracted non-working position in Fig. 2. Opposite sections of the tray 20 with the work tools 1 can be pivoted sideways and upwards for a transport journey on roads, as is known as such. The support wheel device 3 can then be moved into an extended position towards the ground by means of the hydraulic cylinder 8 of the hydraulic system 10 in order to assume the support of the frame 2 with the work tools 1.
A lever arm 11 is formed by means of the connection between the hydraulic cylinder 8 and the pivot arm 5, which extends from the pivot axis 7 to the connection point 9.
In the illustration in Fig. 1, the support wheel 6 is arranged in a non-working position above the work tools 1, which for their part are arranged in a working position for work in the fields. The support wheel 6 is in this non-working position for work in the fields, for example. In the event of a transport journey of the agricultural machine, i.e. it being transported by tractor on tracks or roads, the work tools 1 are raised by means of associated frame elements of the frame 2, for example are pivoted sideways and upwards so as to create a gap or opening beneath the support wheel 6 in order to move the support wheel 6 by pivoting it into a working position (towards the ground) associated with the support wheel 6 such that the support wheel is in contact with the ground and thus supports the frame 2 with the work tools 1 accommodated thereon for the transport journey. If the agricultural machine with the arrangement shown in Fig. 1 is connected to a tractor-side coupling device (not shown) in the usual manner, for example a three-point linkage, the frame 2 is supported, on the one hand, by the tractor-side coupling device and, on the other hand, by the support wheel device 3 during the transport journey with the work tools 1, in particular exclusively thereby.
Fig. 2 shows a schematic perspective illustration of an arrangement for a (solo) rotary harrow, in which work tools 1 are arranged on a gearbox 20. The rotary harrow can, for example, be combined with the arrangement of work tools 1 in such a way that an agricultural machine with an associated support wheel and a plurality of rows of work tools is created, in which the rows of work tools are arranged one behind the other in the direction of travel.
A connection can be established to the tractor-side coupling device (not shown) via a machine-side coupling device 21. The support wheel device 3 is also shown in a retracted non-working position in Fig. 2. Opposite sections of the tray 20 with the work tools 1 can be pivoted sideways and upwards for a transport journey on roads, as is known as such. The support wheel device 3 can then be moved into an extended position towards the ground by means of the hydraulic cylinder 8 of the hydraulic system 10 in order to assume the support of the frame 2 with the work tools 1.
9 Fig. 3 to 5 show schematic perspective views of an arrangement for the support wheel device 3. The same reference numerals as in Fig. 1 and 2 are used in Fig. 3 to 5 for identical features.
Fig. 3 shows a (completely) retracted position for the pivot arm 5 and the support wheel 6 connected thereto via a support arm 30 and a support arm holder 31. The support wheel 6 is moved into different positions in relation to the frame 2 of the agricultural machine by pivoting the pivot arm 5. In the example shown, the carrier means 4 of the support or transport wheel device 3 is designed with a further pivot arm 5a, a further hydraulic cylinder 8a and a further support arm 30a on both sides.
In the position shown in Fig. 3, a longitudinal direction of the hydraulic cylinder 8 runs substantially parallel to a connecting line between the pivot axis 7 and the connection point 9.
In order to move the pivot arm 5 and thus the support wheel 6 into an extended position (cf.
Fig. 4) and thus into the working position for the transport journey, the hydraulic cylinder 8 is extended such that the pivot arm 5 is pivoted about the pivot axis 7, whereby the longitudinal direction of the hydraulic cylinder 8 and the imaginary connecting line between the pivot axis 7 and the connection point 9 assume an opening angle.
From the extended position shown in Fig. 4, the pivot arm 5 and thus the support wheel 6 on the support arm 30 can be moved into a contrastingly (partially) resiliently deflected position, which is shown in Fig. 5, for example when driving over a bump during the transport journey.
The hydraulic cylinder 8 is shortened due to the (resilient) deflection. This causes hydraulic fluid to flow from the hydraulic cylinder 8 into an associated diaphragm accumulator (not shown), which is in fluid connection with the hydraulic cylinder 8 and forms a closed system therewith at least in this operating mode in such a way that no hydraulic fluid can flow back out of the closed system into the hydraulic system of the agricultural machine.
Due to the flow of hydraulic fluid from the hydraulic cylinder 8 in the diaphragm accumulator, a gas arranged on the opposite side of the diaphragm of the diaphragm accumulator is compressed there, which in turn causes an increased back pressure. In this way, the force provided by the hydraulic system 10 with the hydraulic cylinder 8 and the diaphragm accumulator is increased.
During the movement, the hydraulic cylinder 10 in turn pivots about an associated hydraulic cylinder pivot axis 7a that is spaced from the pivot axis 7.
The opposite is true during the transition from the extended position in Fig.
4 to the resiliently deflected position in Fig. 5 in terms of the degree of efficiency of the conversion of the force provided by means of the hydraulic system and applied to the pivot arm 5 via the hydraulic cylinder, because the angle between the longitudinal direction of the hydraulic cylinder 8 and the imaginary connecting line between the connection point 9 and the pivot axis 7 is reduced, which reduces the force acting on the pivot arm 5. The force provided by the hydraulic system
Fig. 3 shows a (completely) retracted position for the pivot arm 5 and the support wheel 6 connected thereto via a support arm 30 and a support arm holder 31. The support wheel 6 is moved into different positions in relation to the frame 2 of the agricultural machine by pivoting the pivot arm 5. In the example shown, the carrier means 4 of the support or transport wheel device 3 is designed with a further pivot arm 5a, a further hydraulic cylinder 8a and a further support arm 30a on both sides.
In the position shown in Fig. 3, a longitudinal direction of the hydraulic cylinder 8 runs substantially parallel to a connecting line between the pivot axis 7 and the connection point 9.
In order to move the pivot arm 5 and thus the support wheel 6 into an extended position (cf.
Fig. 4) and thus into the working position for the transport journey, the hydraulic cylinder 8 is extended such that the pivot arm 5 is pivoted about the pivot axis 7, whereby the longitudinal direction of the hydraulic cylinder 8 and the imaginary connecting line between the pivot axis 7 and the connection point 9 assume an opening angle.
From the extended position shown in Fig. 4, the pivot arm 5 and thus the support wheel 6 on the support arm 30 can be moved into a contrastingly (partially) resiliently deflected position, which is shown in Fig. 5, for example when driving over a bump during the transport journey.
The hydraulic cylinder 8 is shortened due to the (resilient) deflection. This causes hydraulic fluid to flow from the hydraulic cylinder 8 into an associated diaphragm accumulator (not shown), which is in fluid connection with the hydraulic cylinder 8 and forms a closed system therewith at least in this operating mode in such a way that no hydraulic fluid can flow back out of the closed system into the hydraulic system of the agricultural machine.
Due to the flow of hydraulic fluid from the hydraulic cylinder 8 in the diaphragm accumulator, a gas arranged on the opposite side of the diaphragm of the diaphragm accumulator is compressed there, which in turn causes an increased back pressure. In this way, the force provided by the hydraulic system 10 with the hydraulic cylinder 8 and the diaphragm accumulator is increased.
During the movement, the hydraulic cylinder 10 in turn pivots about an associated hydraulic cylinder pivot axis 7a that is spaced from the pivot axis 7.
The opposite is true during the transition from the extended position in Fig.
4 to the resiliently deflected position in Fig. 5 in terms of the degree of efficiency of the conversion of the force provided by means of the hydraulic system and applied to the pivot arm 5 via the hydraulic cylinder, because the angle between the longitudinal direction of the hydraulic cylinder 8 and the imaginary connecting line between the connection point 9 and the pivot axis 7 is reduced, which reduces the force acting on the pivot arm 5. The force provided by the hydraulic system
10, on the one hand, and the degree of efficiency of the force application, on the other, are thus inversely proportional. In this way, the supporting force provided by means of the support wheel device 3 during the transport journey remains substantially the same, which consequently means that the force load on the tractor-side coupling device from the agricultural machine remains substantially the same. As a result, the influence of the agricultural machine during the transport journey on the axle load of the tractor is substantially constant, which improves the driving safety for the machine combination of the tractor and agricultural machine.
Fig. 6 shows this by means of a graphical representation. Force and displacement components are shown for the pivoting of the pivot arm 5. A curve 60 shows the time-dependent cylinder stroke on the hydraulic cylinder 8 during pivoting. A curve 61 shows the displacement path of the support wheel 6 as it resiliently deflects from the (completely) extended position 62 to deflection positions as time goes on. Finally, the curve 63 shows the force on the hydraulic cylinder 8 due to the interaction with the diaphragm accumulator in the closed system during pivoting. It follows that the curve 63 initially runs through a linear range 64 starting from the extended position 62 during deflection.
The features disclosed in the above description, the claims and the drawing can be of importance both individually and in any combination for the realization of the various embodiments.
Fig. 6 shows this by means of a graphical representation. Force and displacement components are shown for the pivoting of the pivot arm 5. A curve 60 shows the time-dependent cylinder stroke on the hydraulic cylinder 8 during pivoting. A curve 61 shows the displacement path of the support wheel 6 as it resiliently deflects from the (completely) extended position 62 to deflection positions as time goes on. Finally, the curve 63 shows the force on the hydraulic cylinder 8 due to the interaction with the diaphragm accumulator in the closed system during pivoting. It follows that the curve 63 initially runs through a linear range 64 starting from the extended position 62 during deflection.
The features disclosed in the above description, the claims and the drawing can be of importance both individually and in any combination for the realization of the various embodiments.
11
Claims (13)
1. Agricultural machine to be hitched to a tractor, having - a frame (2);
- work tools (1), which are arranged on the frame (2) and can be moved between a working position and a transport position;
- a coupling device, which, for hitching to a tractor, is configured to be coupled to a tractor-side coupling device; and - a support wheel device (3), which is configured to support the frame (2) together with the work tools (1) during a transport journey, when the work tools (1) are arranged in the transport position, and which comprises:
- a support wheel (6), which rolls on the ground during the transport journey, - a carrier means (4), by means of which the support wheel (6) is arranged on the frame (2) and can be moved into various positions with respect to the frame (2) for the transport journey, and - a hydraulic system (10), which is connected to the carrier means (4) and is config-ured to allow resilient deflection of the support wheel (6) during the transport jour-ney by moving the support wheel out of an extended position into a contrastingly resiliently deflected position of the various positions counter to a counterforce pro-vided by the hydraulic system (10);
wherein a supporting force provided by the support wheel device (3) during the transport journey is substantially the same in the extended and resiliently deflected position.
- work tools (1), which are arranged on the frame (2) and can be moved between a working position and a transport position;
- a coupling device, which, for hitching to a tractor, is configured to be coupled to a tractor-side coupling device; and - a support wheel device (3), which is configured to support the frame (2) together with the work tools (1) during a transport journey, when the work tools (1) are arranged in the transport position, and which comprises:
- a support wheel (6), which rolls on the ground during the transport journey, - a carrier means (4), by means of which the support wheel (6) is arranged on the frame (2) and can be moved into various positions with respect to the frame (2) for the transport journey, and - a hydraulic system (10), which is connected to the carrier means (4) and is config-ured to allow resilient deflection of the support wheel (6) during the transport jour-ney by moving the support wheel out of an extended position into a contrastingly resiliently deflected position of the various positions counter to a counterforce pro-vided by the hydraulic system (10);
wherein a supporting force provided by the support wheel device (3) during the transport journey is substantially the same in the extended and resiliently deflected position.
2. Agricultural machine according to Claim 1, characterized in that the support wheel (6) can be moved into at least one further resiliently deflected position of the various posi-tions, which is different from the resiliently deflected position, when it is resiliently de-flected relative to the extended position, wherein the supporting force provided by the support wheel device (3) during the transport journey is substantially the same in the extended and the further resiliently deflected position.
3. Agricultural machine according to Claim 1 or 2, characterized in that the extended posi-tion forms an end position for moving the support wheel (6) into the various positions, in which end position the support wheel is fully extended.
4. Agricultural machine according to at least one of the preceding claims, characterized in that the retracted position and / or the further retracted position are different from an opposite end position in which the support wheel (6) is fully resiliently deflected.
5. Agricultural machine according to at least one of the preceding claims, characterized in that - a force provided by the hydraulic system (10) is different in the extended position and the resiliently deflected position and - a degree of efficiency of a conversion of the force provided by means of the hydraulic system (10) into the supporting force is different in the extended and the resiliently deflected position;
Wherein, in order to provide substantially the same supporting force of the support wheel device (3) during the transport journey, during the transition between the extended and the resiliently deflected position, the degree of efficiency is inversely proportional to the change in the force provided by the hydraulic system (10).
Wherein, in order to provide substantially the same supporting force of the support wheel device (3) during the transport journey, during the transition between the extended and the resiliently deflected position, the degree of efficiency is inversely proportional to the change in the force provided by the hydraulic system (10).
6. Agricultural machine according to Claim 5, characterized in that during the transition be-tween the extended and the resiliently deflected position, a linear inverse proportionality is formed for the degree of efficiency in relation to the change in the force provided by the hydraulic system (10).
7. Agricultural machine according to at least one of the preceding claims, characterized in that the carrier means (3) has a pivot arm (5), to which the support wheel (6) is connected and which can be pivoted about a pivot axis (7) into various pivot positions in relation to the frame (2) during the transport journey such that the support wheel (6) can be moved into the various positions.
8. Agricultural machine according to Claim 7, characterized in that the hydraulic system (10) is connected to the pivot arm (5), forming a lever arm (11) between a connection point (9), in which the hydraulic system (10) is connected to the pivot arm (5), and the pivot axis (7).
9. Agricultural machine according to Claim 8, characterized in that the hydraulic system (10) has a hydraulic cylinder (8), which is connected to the pivot arm (5) at the connection point (9).
10. Agricultural machine according to Claims 5 and 9, characterized in that the degree of efficiency of the conversion of the force provided by means of the hydraulic system (10) and applied to the lever arm (11) of the carrier means (3) is different due to different angular positions between the lever arm (11) and a longitudinal direction of the hydraulic cylinder (8).
11. Agricultural machine according to at least one of the preceding claims, characterized in that the hydraulic system (10) has a diaphragm accumulator and / or a piston accumula-tor.
12. Agricultural machine according to at least one of the preceding claims, characterized in that the work tools (1) comprise one or more of the following tools: tillage tool, spraying tool, mowing tool and sowing tool.
13. Agricultural machine combination, having a tractor and an agricultural machine accord-ing to at least one of the preceding claims that is connected to the tractor.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP21188234.5 | 2021-07-28 | ||
| EP21188234.5A EP4124221A1 (en) | 2021-07-28 | 2021-07-28 | Agricultural machine and agricultural machine combination |
| PCT/EP2021/086439 WO2023006233A1 (en) | 2021-07-28 | 2021-12-17 | Agricultural machine and agricultural machine combination |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA3223283A1 true CA3223283A1 (en) | 2023-02-02 |
Family
ID=77103999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA3223283A Pending CA3223283A1 (en) | 2021-07-28 | 2021-12-17 | Agricultural machine and agricultural machine combination |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4124221A1 (en) |
| AU (1) | AU2021458229A1 (en) |
| CA (1) | CA3223283A1 (en) |
| WO (1) | WO2023006233A1 (en) |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10224861A1 (en) | 2002-06-05 | 2003-12-24 | Amazonen Werke Dreyer H | Support wheel for agricultural attachment for tractor hitch has hydraulic suspension linked to tractor hydraulic system |
| FR2853204B1 (en) | 2003-04-07 | 2006-02-03 | Kuhn Sa | AGRICULTURAL MACHINE HAVING AT LEAST ONE TRANSPORT ASSISTANCE WHEEL |
| DE102005001412B4 (en) * | 2005-01-12 | 2007-01-11 | Maschinenfabrik Kemper Gmbh & Co. Kg | Trolley for supporting a header during a road trip |
| FR2886511B1 (en) | 2005-06-07 | 2007-08-31 | Michel Evin | TILT WORKING MACHINE WITH TILTABLE TRACTION FRAME COMPRISING WHEELS SPECIFICALLY WHEEL-GAUGE AND TRANSPORT WHEELS |
| DE102009014874A1 (en) | 2009-03-25 | 2010-09-30 | Amazonen-Werke H. Dreyer Gmbh & Co. Kg | An agricultural implement which can be coupled to the coupling element of a farm tractor |
| DE102009044329A1 (en) | 2009-08-20 | 2011-02-24 | Amazonen-Werke H. Dreyer Gmbh & Co. Kg | Bestellkombination |
| EP2422598B1 (en) | 2010-08-30 | 2014-12-31 | Horsch Maschinen GmbH | Soil treatment compound |
| DE102013007038B4 (en) | 2013-04-24 | 2019-01-24 | Lemken Gmbh & Co. Kg | Soil cultivation implement for attachment to a towing vehicle |
| DE102015100273A1 (en) | 2015-01-09 | 2016-07-14 | Lemken Gmbh & Co. Kg | Agricultural implement with auxiliary landing gear |
| US10638653B2 (en) | 2016-10-05 | 2020-05-05 | Cnh Industrial America Llc | Caster wheel assembly for an agricultural implement system |
| DE102018208852A1 (en) * | 2018-06-05 | 2019-12-05 | Lemken Gmbh & Co. Kg | Agricultural device |
-
2021
- 2021-07-28 EP EP21188234.5A patent/EP4124221A1/en active Pending
- 2021-12-17 CA CA3223283A patent/CA3223283A1/en active Pending
- 2021-12-17 WO PCT/EP2021/086439 patent/WO2023006233A1/en active Application Filing
- 2021-12-17 AU AU2021458229A patent/AU2021458229A1/en active Pending
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|---|---|
| AU2021458229A1 (en) | 2024-01-25 |
| WO2023006233A1 (en) | 2023-02-02 |
| EP4124221A1 (en) | 2023-02-01 |
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