• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The agricultural machine comprises a supporting frame (1), and a working unit (5), which is mounted at the supporting frame is raisable and lowerable manner. A hydraulic cylinder (6) is provided, which is arranged between the supporting frame and the working unit for lifting the working unit into a headland position or into a transporting position. The two hydraulic cylinders (7) are connected in parallel and arranged side by side.
    公开号:NL2007296A
    申请号:NL2007296
    申请日:2011-08-25
    公开日:2012-02-28
    发明作者:August Greifeneder；Herbert Holzinger；Norbert Angleitner
    申请人:Alois Pa Ttinger Maschinenfabrik Gmbh；
    IPC主号:
    专利说明:

    Agricultural machine.
    The present invention relates to an agricultural machine for mounting on a tractor in the form of a mowing device, with a supporting frame and a working unit mounted on the supporting frame for lifting and lowering, wherein a first hydraulic cylinder is mounted between the supporting frame and the working unit. lifting the working unit to a headland position and / or a transport position, as well as a second hydraulic cylinder for supporting the working unit in the lowered working position carried over the ground.
    Mowing devices are pivotally coupled to a mounting stand in the usual manner about a horizontal axis, so that they can be pivoted upwards in an elevated headland or transport position. For this purpose hydraulic cylinders can be used which are on the one hand hinged to the support frame and on the other hand hinged to the working unit and can be connected to the hydraulic system of the tractor. On the other hand, in the working position in which they are carried over the ground, such mowing devices must be provided with a weight support so that they can better follow the bottom contour and, as it were, float lightly over bottom ridges, without taking into account their considerable own weight. run into soil wrinkles and dig in the soil. For this weight support, hydraulic cylinders can also be used which are arranged between the support frame and the working unit. The different purpose of use, however, in principle places entirely different demands on the corresponding hydraulic cylinders. While the hydraulic cylinders for raising the working unit in the headland or even in the transport position ensure a large adjustment path and must exert great forces, the cylinders for the weight support require only a small adjustment path and correspondingly smaller forces.
    Despite these different requirements, an attempt is made to combine the two hydraulic cylinders into one unit to achieve a compact device. For example, EP 0 899 996 B1 describes a mowing device that can be attached to a tractor in which a hydraulic cylinder unit is provided in the cylinders of which two separate piston rods for weight support on the one hand and for lifting the working unit to the transport position on the other hand. are included which protrude on opposite sides from the cylinder, so that one piston rod can be hingedly connected to the working unit and the other piston rod can be hingedly connected to the carrying frame of the mowing machine. The chamber defined between one piston rod and the cylinder is loaded with the relief pressure, while the chamber defined between the other piston rod and the hydraulic cylinder is loaded with the lifting pressure. It is true that with this hydraulic cylinder unit a compact device can be achieved which nevertheless fulfills the various functions. The manufacture of the cylinder, however, is relatively expensive for such a double receptacle for a piston rod. Furthermore, one piston rod must be used as a stop for the other piston rod when the cylinder unit must have a defined stop position and a compact device is sought.
    A similar hydraulic cylinder unit with a double piston rod device for lifting, respectively. for the weight support of a mowing device is described in EP 0 997 062 B1.
    EP 11 31 992 B9 describes a hydraulic cylinder unit for a mowing machine which is formed from two hydraulic piston-cylinder devices, the cylinder bottoms of which face each other and are fixedly connected to each other. This means that when using a single resp. different cylinder movements can be achieved in a common cylinder with two separate piston rods. The reverse path describes AT 501 973 B1 showing a hydraulic cylinder unit for weight support and for raising a mowing device in the transport position, the two hydraulic cylinders intended for the different functions being connected to each other by a common piston rod .
    With the solutions mentioned, on the one hand the required construction length of the piston-cylinder unit is disadvantageous for a compact design of the support frame. On the other hand, when the lifting cylinder is actuated, a delay occurs which is determined by the relief cylinder and its limited pressure load. If the lifting cylinder is fully loaded with the lifting pressure, the strain relief will initially stretch. Only when this release of the release cylinder stops, is the movement of the lifting cylinder actually converted into a lifting movement of the working unit.
    The present invention therefore has for its object to provide an improved agricultural machine of the type mentioned in the preamble which avoids disadvantages of the prior art and further develops the latter advantageously. A compact cylinder device for pressure means should preferably be provided which can be manufactured in a simple manner and with the aid of which the working unit of the agricultural machine can be relieved in terms of weight on the one hand and as much as possible without being activated in an headland position and / or transport position. delay can be lifted
    According to the invention this object is achieved by an agricultural machine with the measures according to claim 1. Preferred embodiments of the invention are the subject of the subclaims.
    It is therefore proposed to combine the two hydraulic cylinders, one of which serves for weight support and the other for lifting the working unit, into a double or multiple cylinder unit that can be mounted in a simple manner as a separate hydraulic cylinder on the support frame and the work unit. According to the invention, it is provided that the two hydraulic cylinders are connected in parallel and placed next to each other, wherein the two hydraulic cylinders and / or the two piston rods of the hydraulic cylinders are in each case passed through a common pivotable coupling part for pivotally coupling the hydraulic cylinders, resp. the piston rods are combined and connected to each other at a common pivot point. The two cylinders are therefore no longer connected one after the other, but connected in parallel, so that the relief or resp. lifting forces provided in each case by both cylinders are added, whereby the lifting force of the lifting cylinder required for lifting the working unit is reduced, because the force of the relief cylinder always acts in parallel supporting, so that the lifting cylinder can be adjusted more easily. In particular, however, the disadvantageous delay known from the state of the art in activating the lifting cylinder has been eliminated, because a pressure load of the lifting cylinder is immediately fully transferred to the working unit, resp. the support frame.
    Moreover, a considerable shortening of the length of the entire cylinder unit consisting of both hydraulic cylinders can be achieved, because the entire length is not formed as the sum of the individual lengths, but only corresponds to the length of a hydraulic cylinder.
    Both the cylinders and the piston rods are advantageously combined and connected to each other by means of a joint hinged coupling part, so that both ends of the unit only have one pivot point each time. As an alternative to this, it could also be provided that only the cylinders or the piston rods are combined with each other in the aforementioned manner by a joint hinged coupling part, wherein, for example, the piston rods when combining the cylinders separate pivotable coupling parts in the form of a shaft recess so that the piston rods can have different lengths and the pivot points could be displaced relative to each other. Advantageously, however, both the hydraulic cylinders and the piston rods are pivotally coupled to a common shaft, respectively. a common pivot point.
    Said common pivotable coupling part can in principle be of different design, wherein in an advantageous further development of the invention a bolt hole can be provided, in particular in the form of a solid hinge block with a receiving opening through which a hinge bolt can be guided. Advantageously, the piston rods and / or the hydraulic cylinders can be rigidly and immovably connected to each other by means of the respective pivotable coupling part associated therewith.
    In a further development of the invention, the two hydraulic cylinders have the same length. Alternatively or additionally, the two piston rods can also have an identical length. In a further development of the invention, the hydraulic cylinders and / or the pistons included therein can have an identical diameter.
    Alternatively or additionally, the piston rods can in principle also have an identical diameter.
    The second hydraulic cylinder for weight support of the working unit is advantageously set in motion by a hydraulic circuit closed at least during operation.
    In a further development of the invention, the first and the second hydraulic cylinder are each designed as a single-acting cylinder. It is sufficient if each of the hydraulic cylinders has only one pressure chamber with the aid of which the respective piston rod can be moved relative to the cylinder. The resetting movement takes place by the force of gravity of the working unit hingedly coupled thereto. In particular, the two hydraulic cylinders can be designed as pure draw cylinders, each of which causes the respective piston rod to move inwards by means of a pressure load. Alternatively, the two hydraulic cylinders can also be designed as pure pressure cylinders that cause the respective piston rod to move outwards by means of a pressure load. Optionally, only one of the hydraulic cylinders can be designed as a single-acting cylinder, while the other, preferably the first, hydraulic cylinder for lifting the working unit into the transport position is designed as a double-acting cylinder. This allows the working unit to be pivoted into a transport position that is on the other side of the vertical position at the dead center. The lowering can be achieved by pressing beyond the dead point. Preferably, however, the two hydraulic cylinders are each designed as single-acting cylinders in the above-mentioned manner. This results in a particularly simple device.
    The two hydraulic cylinders are preferably hingedly connected on the one hand to the support frame and on the other hand to the working unit, resp. hinge brackets rigidly attached thereto without interconnection of further pull and pressure parts, wherein the hinged connection to the support frame can take place directly via an intermediate piece, as will be explained below.
    Alternatively, however, it may be provided that the first and second hydraulic cylinders are mechanically connected in series with a further hydraulic cylinder. The additional hydraulic cylinder can be designed in this way for further tasks, for example for lifting. In a preferred embodiment, it is provided here that the additional hydraulic cylinder or the piston rod thereof is connected to the hinged coupling part of the hydraulic cylinders or the hinged coupling part of the piston rods, wherein the connection between the first and the second hydraulic cylinder and the additional cylinder is advantageously rigid.
    According to an advantageous embodiment of the invention, the two hydraulic cylinders are pivotally coupled to the support frame, while the piston rods are pivotally connected to the working unit. In principle, the device could also be arranged in reverse, namely that the piston rods are pivotally coupled to the support frame and the hydraulic cylinders to the working unit. However, the above-described embodiment is preferred, since the generally heavier hydraulic cylinders are then closer to the support frame and thus a more favorable center of gravity is created close to the machine attachment stand.
    In a further development of the invention, the second hydraulic cylinder for the weight support is fed with relief pressure from a pressure accumulator which provides variable, preferably constant, pressure. The second hydraulic cylinder can in particular be connected to a closed pressure circuit with at least one hydraulic pressure accumulator. During operation, therefore, no connection is made to the hydraulic system on the tractor side. Only the preset pressure in the hydraulic pressure accumulator triggers the weight support.
    To be able to change the relief pressure resp. to be able to fill the hydraulic pressure accumulator, or to be able to top it up in a further development of the invention, the at least one hydraulic pressure accumulator can comprise a filling / discharge connection which can be closed by a shut-off valve and comprises connecting means for connecting to the hydraulic supply to the side of the tractor. If the pressure in the hydraulic pressure accumulator is to be increased or decreased, the shut-off valve is opened after the circuit has been previously connected under pressure to tractor-side hydraulic supply, so that the pressure can be changed in the desired manner. When the desired relief pressure is set, the shut-off valve is closed. When the machine is in operation, the shut-off valve then remains closed, so that the circuit is disconnected under pressure from the tractor-side hydraulic supply.
    In a further development of the invention, the working unit is not only liftable and lowerable with respect to the supporting frame, but it can also be rotated about an upstanding axis of rotation, in particular such that the working unit can be swung back and forth between a lateral protruding operating position and a transport position which substantially overlaps the track of the supporting frame. To this end, the working unit can advantageously be suspended from a carrying arm which can be rotated about a lying axis on the one hand for raising and lowering and that it can be rotated about an upright axis on the other, so that it can be moved between a projecting working position and a raised position in the aforementioned manner. swiveled transport position. In particular, the said carrying arm can in this case be hingedly coupled to an intermediate piece with respect to which it can be rotated about one axis, while the intermediate piece can be pivotably rotated about the other axis together with the hingedly coupled carrying arm to the carrying frame of the machine. Advantageously, the spacer is pivotably coupled to the support frame about the upright axis, while the support arm for the working unit is pivotably coupled to the spacer about the horizontal axis.
    In an advantageous further development of the invention, the two above-mentioned first and second hydraulic cylinders which are combined into a hydraulic cylinder unit are pivotally coupled on the one hand to the bearing arm and on the other hand to said intermediate piece, wherein no direct hinge connection must be provided on the intermediate piece itself , but advantageously also a common hinge connection of intermediate piece and hydraulic cylinder unit can be arranged on the upright axis of rotation. Advantageously, between the above-described common hinged coupling piece which combines the hydraulic cylinder or the cylinder rods and said intermediate piece or the axis of rotation thereof, a ball joint-like and / or multi-axis rotatable bearing part is arranged, so that on the one hand a rotation about the upright axis and on the other hand, tipping about an axis running vertically relative to this is possible.
    With respect to the second axis of rotation of the support arm, a third hydraulic cylinder is advantageously arranged which is coupled on the one hand to the support frame and on the other hand to the said intermediate piece and / or the support arm.
    In order to achieve a coordinated movement of the working unit about both axes of rotation, in a further development of the invention, the above-mentioned first hydraulic cylinder for lifting the working unit and said third hydraulic cylinder for rotating the working unit around the upright rotation axis can be shaft are set in motion by a common hydraulic system, in particular the lifting-pressure chamber of the first hydraulic cylinder being connected to the pressure chamber of the third hydraulic cylinder which provides for rotation of the working unit in the transport position which is approximately in line lies with the track of the suspension arm. As a result, it is ensured in a simple manner that the lifting unit automatically rotates behind the carrying arm in the transport position when it is lifted.
    The present invention is explained in more detail below with reference to a preferred exemplary embodiment and associated drawings. In the drawings: Fig. 1 shows a perspective view of a milling device mountable on a tractor according to a preferred embodiment of the invention in a schematic representation showing the two hydraulic cylinders mounted on a working unit pivotally and pivotally coupled thereto. common piston rod, and Fig. 2: a simplified representation of a side view of the mowing device of Fig. 1 showing the arrangement of the hydraulic cylinders between the support frame and the lifting arm carrying the working unit.
    The mowing device shown in the figures drives sideways in the lowered operating position next to the tractor (not shown). This comprises a support frame 1 which can be mounted on a tractor (not shown) via a hinged three-point coupling 2 which is usual. The supporting frame 1 carries laterally a lifting arm 3 which is rotatably and pivotally coupled to the supporting frame 1 about a horizontal axis of rotation pointing in the direction of travel and also about an upstanding second axis of rotation 23. The actual working unit 5 of attached to the mowing device which may comprise, for example, rotating cutting drums in a manner known per se.
    The lifting arm 3 and therefore the working unit 5 can be raised and lowered by the two hydraulic cylinders 6 and 7 about the axis of rotation 4. The first hydraulic cylinder 6 is herein arranged for lifting the working unit 5 in a headland position, as well as in a substantially vertically upwardly directed transport position. The second hydraulic cylinder 7, on the other hand, is provided for the weight support of the working unit 5 in the lowered, working position over the ground.
    As is shown in figures 1 and 2, the two hydraulic cylinders 6 and 7 are connected in parallel and arranged next to each other, each hydraulic cylinder 6 and 7 being provided with its own, separate piston rod 8, resp. 18. The two hydraulic cylinders 6 and 7 are advantageously arranged directly parallel to each other and are of the same length, so that their ends are in each case directly adjacent to each other, without any run-off. The piston rods 8 and 18, as well as the pistons connected thereto, are advantageously designed in the cylinders in a similar geometry, in particular of equal length and width, the piston rods 8 and 18 coming from the same adjacent ends of the hydraulic cylinders move outwards, so that the ends of the piston rods 8 and 18 are also arranged side by side.
    As Fig. 2 shows, the two hydraulic cylinders 6 and 7 are connected to each other by a common head piece which forms a joint hinged coupling part 19 in the embodiment of a block-like coupling eye. In the embodiment shown, the two piston rods 8 and 18 are also connected at their ends to each other by a joint hinged coupling part 20 which can advantageously be designed in the form of a tubular eye of the shaft, cf. fig. common hinged coupling parts 19 and 20, the double cylinder unit 22 which is formed by the two hydraulic cylinders 6 and 7 and the piston rods 8 and 18 thereof is pivotally coupled on the end face to a common hinge axis on the one hand to the said lifting arm 3 and on the other hand to the supporting frame 1.
    Advantageously, said lifting arm 3 can not only be moved up and down, but can also be rotated relative to the supporting frame 1 about the upright axis of rotation 23, in particular to enable the working unit 5 to be swiveled into a transport position which the track of the hinged three-point coupling. In the meantime, the laterally projecting working position is shown in Fig. 1.
    For this two-axis rotatability of the working unit 5, resp. of the lifting arm 3 carrying it, the lifting arm 3 is not directly hingedly coupled to the supporting frame 1, but is hingedly connected to an intermediate piece 21, namely around the aforementioned horizontal axis of rotation 4. The said intermediate piece 21 is again pivotably coupled to the supporting frame 1 about said upright axis of rotation 23.
    The double cylinder unit 22 described above is jointly hinged to the upright axis of rotation 23 with the intermediate piece 21, wherein a ball joint-like bearing part 24 is arranged between the hinged coupling part 19 and the said upright axis of rotation 23 in addition to the rotatability about the rotation axis. shaft 23 also allows tilting of the double cylinder unit 22 when the lifting arm 3 is pivoted upwards.
    In order to be able to rotate the lifting arm and thereby the working unit 5 about said upright rotation axis 23, a third hydraulic cylinder 13 is arranged which is pivotally coupled on the one hand to the supporting frame 1 and on the other hand to said intermediate piece 21. To this end, the intermediate piece 21 comprises a hinge console 15 at a distance from the axis of rotation 23, while the supporting frame 1 comprises a hinge bracket 14 which is also at a distance from the said axis of rotation 23, cf. Fig. 2. In the embodiment shown, the hydraulic cylinder 13 is thereby pivotally coupled to the supporting frame 1, while the associated piston rod 16 is hingedly connected to the intermediate piece 21, precisely said pivotably coupled to the hinge bracket 15 thereof.
    The second hydraulic cylinder 7 is advantageously set in motion by a closed circuit under pressure 11 which can advantageously comprise a pressure accumulator 12, from which the hydraulic cylinder 7 is loaded with the pressure for the weight support. While in conventional double cylinder units connected one after the other with a relief cylinder and a lifting cylinder, a corresponding pressure accumulator for the relief cylinder is provided with a shut-off valve to keep the lifting pressure away from the pressure accumulator during lifting, this can be omitted in the present solution because it circuit under pressure 11 of the release cylinder remains unaffected by the lifting pressure.
    To set the first hydraulic cylinder 6 in motion, a separate circuit is provided under pressure 17, which is provided in an advantageous manner, respectively. can be steered from the tractor (not shown). Advantageously, the pressure chamber of the first hydraulic cylinder 6 for lifting the working unit 5 for rotation about the upright axis of rotation 23 is coupled together, respectively. connected to the pivot cylinder 13 for rotating about the upright axis of rotation 23, in particular to the pressure chamber which is arranged for pivoting the working unit 5 into the transport position. This allows an automatic swing in the transport position to be combined with lifting.
    权利要求:
    Claims (10)
    [1]
    Agricultural machine for mounting on a tractor, preferably mowing device, with a support frame (1) and at least one working unit (5), which is fixedly and lowerably attached to the support frame (1), wherein between the support frame (1) and the working unit (5) a first hydraulic cylinder (6) for lifting the working unit (5) into a headland position and / or a transport position and a second hydraulic cylinder (7) for weight support of the working unit (5) in the lowered, over the working position carrying the ground is provided, wherein said first and second hydraulic cylinder (6, 7) are combined into a double or multiple cylinder unit, characterized in that the two hydraulic cylinders (6, 7) are connected in parallel and placed next to each other , wherein the hydraulic cylinders (6, 7) through a joint hinged coupling part (19) for hinged and joint coupling of the hydraulic cylinders (6, 7) to a common pivot nt are combined and connected to each other and / or the piston rods (8, 18) of the hydraulic cylinders (6, 7) via a joint hinged coupling part (20) for hinged and joint coupling of the piston rods (8, 18) to a common pivot point are combined and connected to each other.
    [2]
    Agricultural machine according to the preceding claim, wherein the hinged coupling part (19) of the hydraulic cylinders (6, 7) and / or the hinged coupling part (20) of the piston rods (8, 18) has a bolt hole, and in particular a forming a solid, block-like coupling eye, to which the hydraulic cylinders (6, 7) or the piston rods (8, 18) are rigidly attached.
    [3]
    Agricultural machine as claimed in one or more of the foregoing claims, wherein the hydraulic cylinders have parallel longitudinal axes, have substantially the same length and are arranged with their ends directly next to each other, in the length substantially without gradient.
    [4]
    Agricultural machine according to one or more of the preceding claims, in which the second hydraulic cylinder (7) is set in motion by a closed circuit under pressure (11), comprising a pressure accumulator (12), the pressure connection between the second hydraulic cylinder (7) and the pressure accumulator (12) has a seal-free design.
    [5]
    Agricultural machine according to one or more of the preceding claims, wherein the working unit (5) is rotatable relative to the supporting frame (1) about a standing axis of rotation (23), wherein a third hydraulic cylinder (13) is provided for rotating the working unit (5) relative to the standing axis of rotation (23), and wherein the pressure chamber of the first hydraulic cylinder (6) for lifting the working unit (5)) with a pressure chamber of the third hydraulic cylinder (13, it is connected that when the working unit (5) is lifted, the working unit (5) is also rotated about the standing axis of rotation (23).
    [6]
    An agricultural machine according to the preceding claim, wherein the working unit (5) is suspended from a lifting arm (3) which is pivotably coupled about a lying axis of rotation (4) to an intermediate piece (21), which intermediate piece (21) is rotatable is pivotally coupled to the support frame (1) about a standing axis of rotation (23), the first hydraulic cylinder (6) and the second hydraulic cylinder (7) or the piston rods (8, 18) of said first and second hydraulic cylinders (6, 7) are pivotally coupled to the intermediate piece (21) and / or the axis of rotation (23) of the intermediate piece (21).
    [7]
    An agricultural machine according to the preceding claim, wherein a third hydraulic cylinder (13) is provided for rotating the lifting arm (3) about the upright axis of rotation (23), the first hydraulic cylinder (6) being coupled via a pressure line such that is with the third hydraulic cylinder that when lifting the lifting arm (3) by the first hydraulic cylinder (6) the lifting arm (3) is rotated by the third hydraulic cylinder (13) about the upright axis of rotation (23).
    [8]
    Agricultural machine according to one or more of the preceding claims, wherein the first and the second hydraulic cylinder (6, 7) are each designed as single-acting cylinders.
    [9]
    Agricultural machine according to one or more of the preceding claims, wherein the first and the second hydraulic cylinder (6, 7) are mechanically connected in series with a further hydraulic cylinder.
    [10]
    An agricultural machine according to claim 9, wherein the further hydraulic cylinder or the piston rod thereof is connected to the hinged coupling part (19) of the hydraulic cylinders (6, 7) or the hinged coupling part (20) of the piston rods (8, 18), wherein the connection between the first and second hydraulic cylinder (6, 7) and the further hydraulic cylinder is preferably rigid.
    类似技术:
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    NL9200298A|1992-10-01|AGRICULTURAL VEHICLE.
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    NL9401502A|1996-05-01|Agricultural machine.
    NL1029351C2|2007-01-02|Haymaking machine and machine.
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    NL8102676A|1982-03-16|CONNECTION DEVICE FOR FITTING A FARM IMPACT TO THE REAR OF A TRACTOR.
    NL8802243A|1989-04-03|Hay gathering machine with wide working width - has one setting element between each of individual frame elements
    HU209807B|1994-11-28|Agricultural machine with frontal or back tool
    NL2014962B1|2017-01-20|TIPPER FOR PRODUCT-FILLED CONTAINERS
    NL8500976A|1986-11-03|Front mounted harrow for agricultural tractor - has hydraulically movable pivot arm with rotary harrow head with parallelogram hinge allowing height adjustment
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    同族专利:
    公开号 | 公开日
    DE102011111251A1|2012-03-01|
    FR2964007B1|2014-02-21|
    NL2007296C2|2012-08-21|
    DE202010011803U1|2011-12-05|
    FR2964007A1|2012-03-02|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP1312251A1|2001-11-16|2003-05-21|Ferri S.rl.|Hydraulic articulated arm device|
    EP1378157A1|2002-06-19|2004-01-07|Gerhard Dücker GmbH & Co. KG Landmaschinenfabrik|Mowing and/or cutting device|
    FR2857559A1|2003-07-18|2005-01-21|Kuhn Sa|Agricultural mower comprises coupling structure and cutting mechanism led between working and maneuvering positions by single hydraulic actuator|
    DE3630873A1|1986-09-11|1988-03-17|Fendt & Co Xaver|EQUIPMENT ATTACHMENT FOR AGRICULTURAL VEHICLES|
    FR2758938B1|1997-02-03|1999-04-23|Kuhn Sa|AUTOMATIC ADJUSTMENT OF THE LIGHTENING OF A WORKING UNIT OF A MACHINE: METHOD, DEVICE AND MACHINE|
    FR2785143B1|1998-10-30|2001-02-16|Kuhn Sa|AGRICULTURAL MACHINE COMPRISING A DOUBLE CYLINDER WITH A SINGLE CYLINDER|
    DE10011730C2|2000-03-10|2002-01-31|Krone Bernhard Gmbh Maschf|mower|
    ITBO20010595A1|2001-09-27|2003-03-27|Ferri Srl|ARTICULATED HYDRAULIC ARM DEVICE PARTICULARLY FOR AN AGRICULTURAL TOOL|
    DE202005008807U1|2005-06-06|2006-10-12|Alois Pöttinger Maschinenfabrik Gmbh|Agricultural machine for joining to a grinding gear comprises hydraulic cylinders joined together by a common piston rod|
    DE102008057716B4|2008-11-17|2019-09-26|Pöttinger Landtechnik Gmbh|agricultural machinery|FR2993136B1|2012-07-12|2015-04-10|Kuhn Sa|CUTTING MACHINE HAVING AN IMPROVED DISPLACEMENT DEVICE|
    DE202014002808U1|2014-03-31|2015-07-01|Alois Pöttinger Maschinenfabrik Gmbh|Agricultural machine|
    BE1025025B1|2017-07-14|2018-09-26|Cnh Industrial Belgium Nv|Suspension for a mower|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE202010011803|2010-08-25|
    DE202010011803U|DE202010011803U1|2010-08-25|2010-08-25|agricultural machinery|
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