• 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:
    Agricultural implements; with at least one first work device section (11), with at least one second work device section (12) adjoining the respective first work device section (11), and with at least one displacement device (15) via which the respective second work device section (12) relative to the respective The first working device section (11) can be displaced between a completely unfolded state and a completely folded-in state, the respective displacement device (15) having a first cylinder (16) with a first piston (17) operated in the first cylinder and actuated by pressure medium and a second Cylinder (18) with a pressure-medium-actuated second piston (19) guided in the second cylinder, starting from the fully unfolded state of the respective second working device section (12) for transferring the same in the direction of the fully folded state initially exclusively the first piston (17) with work Its pressure is applied, and when the first piston (17) has to cover a defined working path in the folding direction to move the second working device section (12) by a defined displacement path within the first cylinder (16), the second piston (19 ) starting from and controlled by the first cylinder (16) or the first piston (17) displaceable in the first cylinder is acted upon with working pressure.
    公开号:BE1023187B1
    申请号:E2015/5430
    申请日:2015-07-08
    公开日:2016-12-14
    发明作者:Josef Fischer
    申请人:Claas Saulgau Gmbh；
    IPC主号:
    专利说明:

    Agricultural working tool
    The invention relates to an agricultural implement such as e.g. an attachment of an agricultural harvesting vehicle.
    From agricultural practice working implements are known, which have at least one first implement section and at least one adjacent to the respective first implement section and relative to the same displaceable second implement section. Then, if the agricultural implement is e.g. can be a header for an agricultural harvesting vehicle such as a maize header for a forage harvester, the respective first implement portion may be stationary, in which case only the respective second implement portion relative to the first, fixed implement portion is displaced. It should be noted that the first work implement portion may be designed to be displaceable. A fixed implement portion of an attachment is also referred to as the center well and an adjacently displaceable implement portion is also referred to as a cantilever. The invention is not limited to trained as attachments agricultural implements. The agricultural implement may also be a tillage implement, a haymaking machine - such as a rake or a turner - etc.
    An implement with at least one first implement portion and at least one second implement portion has at least one displacement device, via which the respective second implement portion relative to the respective first implement portion between a fully deployed state and a fully retracted state is displaced. In work implements known from practice, the or each displacement device typically has a complex structure with a high space requirement, since relatively high forces or moments must be applied in particular in the displacement of the respective second implement section from the fully unfolded state to the fully folded state.
    There is therefore a need for a novel agricultural implement whose displacement device or displacement means a simple
    Have structure and beyond slim build and therefore have a low space requirement.
    On this basis, the present invention has the object to provide a novel agricultural implement.
    This object is achieved by an agricultural implement according to claim 1.
    The agricultural implement has at least one first implement portion, at least one adjacent to the respective first implement portion, the second implement portion which is displaceable relative to the respective first implement portion, and at least one displacement device. The respective second working device section can be displaced relative to the respective first working device section between a completely unfolded state and a completely folded-in state via the respective displacement device.
    In the fully unfolded state, the agricultural implement is in an operating position in which the respective working facilities cooperate according to their purpose, for example with the field soil or with crop. Since the operating position usually exceeds a permissible transport width on public roads, the implement can be transferred to a transport position in which the implement complies with the permitted dimensions for road transport. For this purpose, the respective implement sections can be completely collapsed or moved to a transport position.
    The respective displacement device has a first cylinder with a guided in the first cylinder, fluid-actuated first piston and a second cylinder with a guided in the second cylinder, pressure-medium-actuated second piston, starting from the fully unfolded state of the respective second implement section for transferring the same in Direction to the fully folded state initially only the first piston is acted upon by working pressure.
    Then, when the first piston has moved to a defined displacement within the first cylinder a defined working path in Einklapprichtung for displacement of the second implement section, and the second piston from and controlled by the first cylinder and the displaceable in the first cylinder first piston with Working pressure is applied.
    The respective displacement device therefore has several cylinders. During the displacement of the respective second work implement section relative to the respective first work implement section, starting from the completely unfolded state in the direction of the completely folded-in state, initially only the first piston is subjected to working pressure. This can avoid that the second piston works at the beginning of this displacement movement against the first cylinder or against the first piston. Only when the first piston has displaced the respective second work implement section by a defined displacement path relative to the respective first work implement section, can the second piston also be acted upon by working pressure from or controlled by the first cylinder or the first piston displaceable in the first cylinder, so that then both cylinders work in the same direction of action or displacement direction. As a result, slender building displacement devices can be provided with a simple structure and low space requirement on an agricultural implement.
    Preferably, in the fully deployed state of the respective second implement section, the first piston is retracted into the first cylinder to a defined position and the second piston is extended out of the second cylinder to a defined position, with the transfer of the respective second implement section toward a complete folded state initially only a bottom-side pressure chamber of the first cylinder is acted upon by working pressure, and wherein when the first piston of the first cylinder has covered the defined working path in Einklapprichtung, also a rod-side pressure chamber of the second cylinder is acted upon by working pressure. For this purpose, it is preferably provided that the first cylinder has a further connection bore between a connection bore for the bottom-side pressure chamber of the first cylinder and a connection bore for a rod-side pressure chamber of the first cylinder, via which for transferring the respective second work device section starting from the completely unfolded state in FIG Direction to the fully folded state, first of the rod-side pressure chamber of the first cylinder with the rod-side pressure chamber of the second cylinder can be coupled, and then, when the first piston of the first cylinder has traveled a defined working path in Einklapprichtung, the rod-side pressure chamber of the second cylinder the bottom-side pressure chamber of the first cylinder can be coupled. This embodiment allows a particularly advantageous displacement of the respective second implement section relative to the respective first implement section, starting from the fully deployed position toward the fully retracted position.
    According to an advantageous development of the invention, starting from the completely folded state of the respective second work implement section for transferring the same in the direction towards the fully unfolded state, initially only the second piston is acted upon by working pressure, wherein when the second piston for displacing the second work implement section by a Defined displacement within the second cylinder has covered a defined working path in Ausklapprichtung, and the first piston is subjected to controlled from the second cylinder and the second piston displaceable in the second piston and controlled by working pressure. With this advantageous development, an advantageous displacement of the respective second working implement section relative to the respective first working implement section is possible, starting from the completely folded-in state in the direction of the completely unfolded state.
    Preferably, in the fully folded state of the respective second work implement section, the second piston is retracted into the second cylinder to a defined position and the first piston is extended from the first cylinder to a defined position, wherein the transfer of the respective second work implement section in the direction of the fully unfolded state initially only a bottom-side pressure chamber of the second cylinder is acted upon by working pressure, and wherein when the second piston of the second cylinder has covered the defined working path in Ausklapprichtung, and the rod-side pressure chamber of the first cylinder is acted upon by working pressure. For this purpose, it is preferably provided that the second cylinder has a further connection bore between a connection bore for the bottom-side pressure chamber of the second cylinder and a connection bore for a rod-side pressure chamber of the second cylinder, via which for the transfer of the respective second equipment section starting from the completely folded state towards the completely unfolded state, first of the rod-side pressure chamber of the second cylinder with the rod-side pressure chamber of the first cylinder can be coupled, and then when the second piston of the second cylinder has covered the defined working path in Ausklapprichtung, the rod-side pressure chamber of the first cylinder to the bottom Pressure chamber of the second cylinder can be coupled. This embodiment allows a particularly advantageous displacement of the respective second implement section relative to the respective first implement section, starting from the fully folded position towards the fully deployed position.
    Preferred embodiments of the invention will become apparent from the dependent claims and the description below. Embodiments of the invention will be described, without being limited thereto, with reference to the drawings. Showing:
    Fig. 1 shows a detail of a trained as an attachment of an agricultural union harvester agricultural implement in a completely unfolded state thereof;
    Fig. 2 shows the detail of Figure 1 in a partially folded to stand the attachment.
    Fig. 3 shows the detail of Figure 1, 2 in a more folded to stand the attachment. and
    Fig. 4 shows the detail of Fig. 1-3 in a completely folded to stand the attachment.
    The present invention relates to an agricultural implement such as e.g. an attachment of an agricultural harvesting vehicle. With reference to Figs. 1 to 4, the invention will be described for an agricultural implement designed as a corn header for a forage harvester, but the invention is not limited to this application.
    A trained as an attachment agricultural implement has a plurality of relatively movable work implement sections, hereinafter called attachment sections, in particular at least a first, fixed attachment section and at least a second, relative to the first attachment section movable attachment section.
    Typically, a single fixed header section, also referred to as a center tray, is provided, with at least one movable header section, also referred to as a boom, being provided on both sides of the stationary header section.
    It should be pointed out that the respective second attachment section or implement section can also be displaceable relative to a displaceable first attachment section or implement section.
    1 to 4 show different views of a detail of a trained as maize header attachment 10, wherein in Fig. 1 to 4 each have a first, fixed header section 11 and one of these first, fixed header section 11 adjacent, relative to the first, fixed header section 11 displaceable, second header section 12 is shown.
    Both in the area of the first, fixed attachment section 11 and the second, displaceable attachment section 12, a plurality of drum-like, rotating mowing devices 13 and 14 are present in a header designed as a corn header.
    The second header section 12 shown in FIGS. 1 to 4 is displaceable relative to the shown first header section 11, namely between a completely unfolded state (see FIG. 1) and a completely folded-in state
    Condition (see Fig. 4). In order to displace the second attachment section 12, shown in FIGS. 1 to 4, relative to the first attachment section 11, a displacement device 15 is provided which serves to displace the second attachment section 12 relative to the first attachment section 11.
    The displacement device 15 comprises a first cylinder 16 with a guided in the first cylinder 16, pressure medium-actuated first piston 17 and a second cylinder 18 with a guided in the second cylinder 18, pressure-medium-actuated second piston 19th
    The cylinders 16, 18 of the displacement device 15 are in the embodiment shown each hingedly connected to the second header section 12, whereas the piston 17, 19 engage with their protruding from the cylinders 16, 18 piston rod ends 20 and 21 articulated on the first header section 11.
    The two cylinders 16, 18 of the displacement device 15 with the guided in the cylinders 16, 18 pistons 17, 19 cause a pivoting or folding of the second header section 12 relative to the first header section 11 about a folding axis 22nd
    When the second header section 12 is displaced relative to the first header section 11, starting from the completely unfolded position shown in FIG. 1 towards the fully folded position shown in FIG. 4, first only the first piston 17 is subjected to working pressure p, in which case when the first piston 17 has traveled a defined travel in Einklapprichtung for displacement of the second header portion 12 by a defined displacement within the first cylinder 16, and the second piston 19 starting from and controlled by the first cylinder 16 and the first cylinder 16 displaceable first piston 17 is acted upon by working pressure p.
    1, the second attachment section 12 is therefore initially displaced exclusively by the first cylinder 16 or first piston 17 by a defined displacement path relative to the fixed attachment section 11, in which case both cylinders 16, 18 or both pistons 17 , 19 are effective and take over the further displacement of the second header section 12 relative to the first header section 11 in the folding direction. Further details will be described in detail below with reference to Figs.
    In the fully extended state (see FIG. 1) of the displaceable attachment section 12, the first piston 17 is almost completely retracted into the first cylinder 16 to a defined position, whereas the second piston 19 from the second cylinder 18 almost completely to a defined position is extended. For displacement of the second header portion 12, starting from the fully unfolded state of Fig. 1 in the direction of fully folded state is initially only a bottom-side pressure chamber of the first cylinder 16 for extending the first piston 17 from the first cylinder 16 with working pressure p acted upon, then , When the first piston 17 has covered the defined working path in Einklapprichtung, in addition, a rod-side pressure chamber of the second cylinder 18 for retraction of the second piston 19 in the second cylinder 18 is acted upon by working pressure p. This defined working path in Einklapprichtung the first piston 17 of the first cylinder 16 has covered in Fig. 2, so starting from the state of Fig. 2 to the state of Fig. 4, both the bottom pressure chamber of the first cylinder 16 and the rod-side pressure chamber of the second cylinder 18 are both acted upon by working pressure p, so then both cylinders 16, 18 and both pistons 17, 19 are effective.
    The first cylinder 16 has a connection bore 23 for the bottom-side pressure chamber of the first cylinder 16 and a connection bore 24 for the rod-side pressure chamber of the first cylinder 16. Likewise, the second cylinder 18 has a connection bore 25 for the bottom-side pressure chamber thereof and a connection bore 26 for the rod-space-side pressure chamber of the second cylinder 18th
    At least the first cylinder 16 has between the connection bore 23 for the bottom-side pressure chamber and the connection bore 24 for the rod-side pressure chamber via a further connection bore 27, via which the transfer of the respective second attachment portion 12, starting from the fully unfolded state of FIG. 1 in the direction of the 4, the rod-side pressure chamber of the first cylinder 16 is initially coupled to the rod-side pressure chamber of the second cylinder 18.
    Then, when the first piston 17 of the first cylinder 16 has traveled the defined working path within the first cylinder 16 in the folding direction, the rod-side pressure chamber of the second cylinder 18 is coupled to the bottom-side pressure chamber of the first cylinder 16 via the further connection bore 27, to then in To provide the working pressure p to these two pressure chambers.
    Starting from the position of the second attachment section 12, which is completely unfolded in FIG. 1, the same is therefore actively displaced initially up to the state of FIG. 2 exclusively by the first cylinder 16 or the first piston 17 guided in the first cylinder 16. Between the states of FIGS. 1 and 2, both pistons 17, 19 continue to travel out of the respective cylinders 16, 18, namely the first piston 17 is pressurized or active and the second piston 19 is passive.
    Then, when the second header section 12 has reached the position of FIG. 2, the rod-side pressure chamber of the second cylinder 18 as well as the bottom-side pressure chamber of the first cylinder 16 is coupled to the working pressure p, so that then starting from the state of FIG. 2 on the state of Fig. 3 to the fully folded state of Fig. 4, the second header portion 12 of both cylinders 16, 18 and the two pistons 17, 19 thereof is actively displaced, since in each case the working pressure p is applied to both pistons. The first piston 17 then extends out of the first cylinder 16 between the states of FIGS. 2 to 4 and the second piston 19 moves into the second cylinder 18.
    It should be pointed out that, alternatively, via a corresponding hydraulic control between the state of FIG. 1 and the state of FIG. 2, both cylinders 16, 18 or both pistons 17, 19 can be acted upon by working pressure p, in which case the second cylinder 18 supports the first cylinder 16 during the displacement of the second header section 12. For this purpose, between the state of FIG. 1 and the state of FIG. 2, the bottom-side pressure chamber of the first cylinder 16 and the bottom-side pressure chamber of the second cylinder 18 are both acted upon by working pressure p. As a result, however, increases the device-side effort, since more control devices are required.
    The further connection bore 27 of the first cylinder 16, which is arranged between the connection bore 23 for the bottom-side pressure chamber and the connection bore 24 for the rod-side pressure chamber of the first cylinder 16, is positioned such that the same the bottom pressure chamber of the first cylinder 16 to the rod side Pressure chamber of the second cylinder 18 couples when the second piston 19 of the second cylinder 18 in the folding movement of FIG. 2, the folding axis 22 of the second header section 12 crosses (see Fig. 2). In this state, the second piston 19 is then typically fully or almost completely extended out of the second cylinder 18.
    In the illustrated preferred embodiment of the invention, the second cylinder 18 between the connection bore 25 for the bottom-side pressure chamber and the connection bore 26 for the rod-side pressure chamber of the second cylinder 18, such a further connection bore 28th
    This further connection bore 28 of the second cylinder 18 is when the second header section 12 of FIG. 1 fully expanded and therefore the second piston 19 is extended from the second cylinder 18 almost completely up to a defined position, with the bottom-side pressure chamber of the second cylinder 18 coupled, whereas when the second header portion 12 of FIG. 4 is completely folded and therefore the second piston 19 is almost completely retracted in the second cylinder 18 to a defined position, this further connection bore 28 with the rod-side pressure chamber of the second cylinder 18th is coupled.
    Then, when the second header section 12 assumes the relative position of FIG. 3 and the piston 22 of the first cylinder 16 crosses the folding axis 22, this coupling of the further connection bore 28 of the second cylinder 18 changes to the pressure chambers thereof.
    From the relative position of FIG. 3 to the fully folded position of FIG. 4, only the bottom-side pressure chamber of the second cylinder 18 is not coupled to working pressure p, but via the connection bore 25 to ambient pressure or tank pressure T.
    Starting from the fully folded state of the second header section 12 (see Fig. 4) in the direction of the fully unfolded state thereof (see Fig. 1), initially only the second piston 19 of the second cylinder 18 is acted upon by working pressure, wherein when the second piston 19 of the second cylinder 18 has traveled for a defined displacement within the second cylinder 18 a defined working path in Ausklapprichtung for displacement of the second header portion 12, and the first piston 17 of the first cylinder 16 starting from and controlled by the second piston 19 of the second Cylinder 18 is acted upon by working pressure. Thus, as can be seen in FIG. 4, in the completely folded state of the displaceable attachment section 12, the second piston 19 is almost completely retracted into the second cylinder 18 to a defined position and the first piston 17 from the first cylinder 16 almost completely closed extended a defined position.
    For the transfer of the second header portion 12, starting from the fully folded state of FIG. 4 in the fully unfolded state of FIG. 1 initially only the bottom-side pressure chamber of the second cylinder 18 is applied to extend the second piston 18 with working pressure, in which case if the second Piston 19 of the second cylinder 18 has traveled a defined working path in Ausklapprichtung, also the rod-side pressure chamber of the first cylinder 16 is acted upon for retraction of the first piston 17 with working pressure. Flierzu serves the already mentioned further connection bore 28 of the second cylinder 18, which is positioned or formed between the connection bore 25 for the bottom-side pressure chamber and the connection bore 16 for the rod-side pressure chamber.
    In the transfer of the second header portion 12, starting from the fully folded state of Fig. 4 in the direction of the fully unfolded state of FIG. 1 relative to the first header section 11 is initially only the bottom-side pressure chamber of the second cylinder 18 with working pressure p applied, whereas the rod-side pressure chamber thereof is coupled to the rod-side pressure chamber of the first cylinder 16.
    Then, when the second piston 19 of the second cylinder 18 has traveled the defined working path in Ausklapprichtung and has reached the position shown in Fig. 3, the rod-side pressure chamber of the first cylinder 16 is coupled to the bottom-side pressure chamber of the second cylinder 18, namely by the further connection bore 28. This changes, as already stated above, the coupling of the further connection bore 28 of the second cylinder 18 to the pressure chambers of the second cylinder 18 when the first piston 17 of the first cylinder 16, the folding axis 22 of the second header section 12 crosses.
    Both when folding and when unfolding the second header section 12 relative to the first header section 11, therefore, the two cylinders 16, 18 are driven in phases, in order to avoid an opposite working of the same at the beginning of folding or unfolding. When folding the first cylinder 16 is initially active, in which case when the displaceable header section 12 has reached the relative position of Fig. 2, and the second cylinder 18 is active. If, on the other hand, the attachment section 12 is displaced from the completely folded-in state of FIG. 4 in the direction of the completely unfolded state of FIG. 1, initially only the second cylinder 18 is active, wherein when the displaceable attachment section 12 reaches the state of FIG. 3 has reached, then the first cylinder 16 is active.
    Since when unfolding lower moments or forces are required than when folding the second header section 12, it is also possible to provide only on the first cylinder 16, the further connection bore 27, but not on the second cylinder 18. The solution shown in Fig. 1 to 4 in which this further connection bore 27 or 28 is present on both cylinders 16, 18, however, is preferred.
    The respective switching from an active cylinder to two active cylinders takes place in each case when the piston or the piston rod of the not yet active cylinder crosses the folding axis 22 of the attachment section 12 to be displaced. Only then do both cylinders 16, 18 act by the pressurization in the same direction of action or displacement direction.
    It should again be noted that via a corresponding hydraulic control at the beginning of folding and at the beginning of unfolding both cylinders 16, 18 and two pistons 17, 19 can be acted upon by the respective bottom pressure chamber with working pressure p, in which case the collapse of the second cylinder 18 supports the first cylinder 16 and at the beginning of the unfolding of the first cylinder 16, the second cylinder 18 at the respective displacement of the second header section 12. However, this increases the device-side effort, since more control devices such as valves are required.
    The connection bores of the above cylinders are coupled to each other in the manner shown in FIGS. 1 to 4 via hoses.
    Thus, the further connection bore 27 of the first cylinder 16 is coupled via a hose to the connection bore 26 for the rod-side pressure chamber of the second cylinder 18.
    The further connection bore 28 of the second cylinder 18 is coupled via a hose to the connection bore 24 for the rod-side pressure chamber of the first cylinder 16.
    The connection bores 23, 25 for the bottom-side pressure chambers of the two cylinders 16, 18 are dependent on the direction of displacement of the displaceable header section 12 either with working pressure p, ie with a high pressure side, or with ambient pressure or tank pressure T, ie a low pressure side, a pressure fluid system, for Example of a hydraulic system, coupled.
    The solution shown in Figs. 1 to 4 comes without external valves. This makes the solution easy and inexpensive.
    List of Reference Numerals 10 Implement / Attachment 11 Workpiece Section / Attachment Section 13 Mower 14 Mower 15 Displacement Device 16 Cylinder 17 Piston 18 Cylinder 19 Piston 20 Piston Rod End 21 Piston Rod End 22 Folding Axle 23 Connecting Bore 24 Connecting Bore 25 Connecting Bore 26 Connecting Bore 27 Connecting Bore 28 Connecting Bore
    权利要求:
    Claims (8)
    [1]
    claims
    An agricultural implement, comprising at least one first implement section (11), at least one second implement section (12) adjacent to the respective first implement section (11), and at least one displacing device (15) via which the respective second implement section (12 ) is displaceable relative to the respective first implement section (11) between a fully unfolded state and a fully retracted state, the respective displacing device (15) having a first cylinder (16) with a first piston actuated by fluid pressure in the first cylinder (16) ( 17) and a second cylinder (18) having a in the second cylinder (18) guided, pressure-medium-actuated second piston (19), starting from the fully unfolded state of the respective second work implement portion (12) for transferring the same in the direction of the completely collapsed to was initially exclusively the first piston (17) is acted upon by working pressure, and wherein when the first piston (17) for displacement of the second implement portion (12) by a defined displacement within the first cylinder (16) covered a defined working path in Einklapprichtung has, also the second piston (19) starting from and controlled by the first cylinder (16) or the first cylinder displaceable in the first piston (17) is acted upon by working pressure.
    [2]
    2. Tool according to Claim 1, characterized in that retracted in the fully unfolded state of the respective second implement portion (12) of the first piston (17) in the first cylinder to a defined position and the second piston (19) from the second cylinder to has been extended to a defined position, wherein for the transfer of the respective second implement portion (12) in the direction of a completely folded state initially only a bottom-side pressure chamber of the first cylinder (16) is acted upon by working pressure, and wherein when the first piston (17 ) has traveled the defined working path in Einklapprichtung, also a rod-side pressure chamber of the second cylinder (18) is acted upon by working pressure.
    [3]
    3. Implement according to claim 2, characterized in that the first cylinder (16) between a connection bore (23) for the bottom-side pressure chamber of the first cylinder and a connection bore (24) for a rod-side pressure chamber of the first cylinder has a further connection bore (27) , via which, for the transfer of the respective second work implement section (12) starting from the completely unfolded state in the direction of the completely folded state, first the rod-side pressure chamber of the first cylinder (16) can be coupled to the rod-side pressure chamber of the second cylinder (18), and via when the first piston (17) has traveled the defined working path in Einklapprichtung, the rod-side pressure chamber of the second cylinder (18) to the bottom-side pressure chamber of the first cylinder (16) can be coupled.
    [4]
    4. Tool according to Claim 3, characterized in that the further connection bore (27) of the first cylinder (16) is positioned between the connection bore (23) for the bottom-side pressure chamber and the connection bore (24) for the rod-side pressure chamber, that the same then couples the rod-side pressure chamber of the second cylinder (18) to the bottom-side pressure chamber of the first cylinder (16) when the second piston (19) of the second cylinder (18) crosses a hinged axis (22) of the respective second implement portion (12).
    [5]
    5. Tool according to one of claims 1 to 4, characterized in that starting from the completely folded state of the respective second working device section (12) for transferring the same in the direction towards the fully unfolded state initially only the second piston (19) is acted upon by working pressure wherein, when the second piston (19) has traveled for a defined displacement within the second cylinder (18) to displace the second implement portion (12) a defined travel in Ausklapprichtung, and the first piston (17) starting from and controlled by the second cylinder (18) or the second piston (19) displaceable in the second cylinder (18) is subjected to working pressure.
    [6]
    6. Tool according to Claim 5, characterized in that retracted in the fully folded state of the respective second implement portion (12) of the second piston (19) in the second cylinder (18) to a defined position and the first piston (17) from the first cylinder (16) is extended up to a defined position, wherein for the transfer of the respective second implement portion (12) in the direction of the fully unfolded state initially only a bottom-side pressure chamber of the second cylinder (18) is acted upon with working pressure, and then, when the second piston (19) has traveled the defined working path in Ausklapprichtung, and the rod-side pressure chamber of the first cylinder (16) is acted upon by working pressure.
    [7]
    7. Tool according to claim 6, characterized in that the second cylinder (18) between a connection bore (25) for the bottom-side pressure chamber of the second cylinder and a connection bore (26) for a rod-side pressure chamber of the second cylinder has a further connection bore (28) , via which, for the transfer of the respective second implement section, starting from the completely folded state towards the completely unfolded state, first the rod-side pressure chamber of the second cylinder (18) can be coupled to the rod-side pressure chamber of the first cylinder (16) and then, if the second piston (19) has traveled a defined working path in Ausklapprichtung, the rod-side pressure chamber of the first cylinder (16) to the bottom-side pressure chamber of the second cylinder (18) can be coupled.
    [8]
    8. Tool according to Claim 7, characterized in that the further connection bore (28) of the second cylinder (18) is positioned between the connection bore (25) for the bottom-side pressure chamber and the connection bore (26) for the rod-side pressure chamber, that the same then couples the rod-side pressure chamber of the first cylinder (16) to the bottom-side pressure chamber of the second cylinder (18) when the first piston (17) of the first cylinder (16) crosses a hinged axis (22) of the second tool section (12).
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    同族专利:
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    BE1023187A1|2016-12-14|
    DE102014110740A1|2016-02-04|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE19524823C1|1995-07-11|1996-09-05|Geringhoff Carl Gmbh Co Kg|Agricultural work machine with first and second extension parts|
    DE19534695A1|1995-09-19|1997-03-20|Moertl Schleppergeraetebau|Mowing machine towed by tractor|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102014110740.3A|DE102014110740A1|2014-07-29|2014-07-29|Agricultural working tool|
    DE102014110740.3|2014-07-29|
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