EP3800975A1 - Dispositif de réglage hydraulique - Google Patents

Dispositif de réglage hydraulique

Info

Publication number
EP3800975A1
EP3800975A1 EP19733660.5A EP19733660A EP3800975A1 EP 3800975 A1 EP3800975 A1 EP 3800975A1 EP 19733660 A EP19733660 A EP 19733660A EP 3800975 A1 EP3800975 A1 EP 3800975A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
piston
line
pressure
working
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19733660.5A
Other languages
German (de)
English (en)
Inventor
Florian Koch
Georg Achten
Georg Paulessen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lemken GmbH and Co KG
Original Assignee
Lemken GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE102018208855.1A external-priority patent/DE102018208855A1/de
Application filed by Lemken GmbH and Co KG filed Critical Lemken GmbH and Co KG
Publication of EP3800975A1 publication Critical patent/EP3800975A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • A01B63/24—Tools or tool-holders adjustable relatively to the frame
    • A01B63/32—Tools or tool-holders adjustable relatively to the frame operated by hydraulic or pneumatic means without automatic control
    • 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
    • A01B73/00—Means or arrangements to facilitate transportation of agricultural machines or implements, e.g. folding frames to reduce overall width
    • A01B73/02—Folding frames
    • A01B73/04—Folding frames foldable about a horizontal axis
    • A01B73/044—Folding frames foldable about a horizontal axis the axis being oriented in a longitudinal direction
    • 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
    • A01B49/00—Combined machines
    • A01B49/02—Combined machines with two or more soil-working tools of different kind
    • A01B49/027—Combined machines with two or more soil-working tools of different kind with a rotating, soil working support element, e.g. a roller

Definitions

  • the present invention relates to a hydraulic actuator for an agricultural tillage implement.
  • a tine device such as a cultivator, a harrow such as a disc harrow, in particular short harrow, or rotary harrow, a sowing device such as a seeder, a seeder or a seed drill, a seedbed combination, a mulcher or a
  • mowers, tedders or shredders are not in the present context as
  • the harrow is the more important it is
  • rollers are not only the working depth adjustment of the actual processing tools, but also the reconsolidation of the soil after its processing. Therefore, the rollers, which are also referred to as follower rollers, are seen behind in the working direction
  • Each work section is assigned its own follower roller, which are fastened to the frame, for example via two bearing points each with a carrier system to the front, oscillating on one balance beam each. That's how it is a stable contact triangle with simultaneous adjustment of the follower rollers to the ground and a uniform reconsolidation is made possible by the follower rollers.
  • the pendulum mechanism can be supplemented or replaced by a hydraulic circuit.
  • a soil tillage implement or method for operating a hydraulic tiller to adjust an agricultural tillage implement thereby overcoming the need for complicated shuttle mechanics through a hydraulic mechanism without requiring active control or valve engineering, and thereby providing homogeneous reconsolidation of the tilled soil Working width is possible.
  • this object is achieved by a hydraulic adjusting device with the features of claim 1 and a method for operating a hydraulic adjusting device with the features of claim 12.
  • the present invention provides a hydraulic actuator for
  • Control device comprises a first pressure medium supply for providing a pressurized medium, at least a first working section and a second working section, the first working section having at least a first cylinder and the second working section having at least one second cylinder.
  • the cylinders are each double-acting and have a hydraulic connection on their piston side and a hydraulic connection on their ring side. Via a connecting line, the ring side of the at least one first cylinder is hydraulically connected to the piston side of the at least one second cylinder.
  • the piston of the at least one first cylinder and the piston of the at least one second cylinder are through
  • both working sections are hydraulically coupled with each other.
  • the relationship between the two working sections to each other is determined by the complete filling of the connecting line in the end position, because by closing the interruptible connection a closed
  • Hydraulic circuit is formed so that again when approaching the end position both pistons are in the same position.
  • the movements of the pistons are synchronized with each other by the coupling.
  • the at least one first cylinder is designed as a master cylinder and the at least one second cylinder is designed as a slave cylinder, so that an annular surface of the at least one first cylinder substantially one Piston area of the at least one second cylinder corresponds. This achieves a hydraulic synchronization of the two working sections.
  • the execution as a master-slave system ensures that both cylinders move the same way, as long as the interruptible connection interrupted after filling with the defined volume in the end position and the hydraulic circuit of the at least one first cylinder, the at least one second cylinder and the connecting line is closed.
  • the working section of the slave cylinder is automatically moved via the coupling in the same working height.
  • cylinders may be present in both working sections or in only one of the working sections. Important for the uniform guidance of both working sections is in particular the ratio of the piston surfaces which are coupled to the connecting line.
  • the total area of the piston side (s) of the one or more master cylinders must be approximately equal to that of the master cylinder
  • Total area of the ring side (s) of the one slave cylinder or the plurality of slave cylinder correspond.
  • the first working section has at least two first cylinders and the second working section has at least two second cylinders, wherein the first cylinders are hydraulically connected to each other in parallel and the second cylinders are hydraulically connected to each other in parallel, so that all the piston surfaces of the first cylinder hydraulically connected to each other, all piston surfaces of the second cylinder are hydraulically connected to each other, all annular surfaces of the first cylinder are hydraulically connected to each other and all annular surfaces of the second cylinder hydraulically with each other are connected so that the pistons of a working section can each oscillate relative to each other.
  • the at least two first and at least two second cylinders each have parallel hydraulically connected piston sides and hydraulically connected in parallel
  • the trailing roll of a working section can accommodate this unevenness without causing an increase in the entire working section and without requiring the pendulum mechanism required in the prior art for this purpose.
  • the area in front of the rollers with the working tools maintains its height relative to the ground.
  • each working section may also each have only one hydraulic cylinder, so that the adjusting device has only a first and a second cylinder.
  • the compensation of unevenness may also take place, but is less stable and may require additional mechanical support to allow the same homogeneity of reconsolidation of the soil.
  • Pressure medium supply connectable, so that the piston of the at least one first cylinder and the piston of the at least one second cylinder moved to an extended end position.
  • Piston side can also vertically positioned cylinder with pistons are used, in which both sides of the piston have the same area.
  • the frame to which the cylinders are attached must be positioned so high above the ground that the weight of the rollers attached to the pistons causes the pistons to extend to their final position.
  • An increased positioning of the frame is possible, for example, by means of downstream wheels, as are known for the road transport of towed agricultural machines.
  • the piston side of the at least one first cylinder is hydraulically connected to a master line
  • Ring side of the at least one second cylinder is hydraulically connected to a slave line.
  • the master line has a second interruptible connection and the slave line has a third interruptible connection.
  • the first, second and third interruptible connections are connected to a synchronous line and the synchronous line itself is the first one
  • the first, second and / or third interruptible connection is preferably a releasable seat-tight valve such. a logic valve, a pressure valve or a directional control valve, particularly preferably one
  • connection to the pressure medium supply can be interrupted, so that at least one first cylinder and the at least one second cylinder can be controlled via other hydraulic lines to change the position of this, wherein the hydraulic coupling via the
  • the cylinders can also be connected differently.
  • the piston side of the at least one first cylinder is hydraulically connected to a cylinder extension line
  • the ring side of the at least one second cylinder is connected to a cylinder intake line
  • the cylinder extension line and the cylinder retraction line are hydraulically connected to a second pressure medium supply for providing a pressurized medium under a second pressure.
  • the cylinder extension line In an extended state, the cylinder extension line is subjected to the second pressure, and in a retracted state, the cylinder retraction line is subjected to the second pressure, so that in the extended state, the pistons of the at least one first cylinder and the at least one second cylinder extend
  • Retracting state retract the piston of the at least one first cylinder and the at least one second cylinder.
  • the at least one first cylinder and the at least one second cylinder are actuated via a second pressure medium supply and the cylinder intake line and the cylinder extension line in order to adjust the height of the rollers which can be adjusted via the pistons. Due to the hydraulic coupling, preferably in the master-slave assembly, of the at least one first cylinder and the at least one second cylinder, it is sufficient to control the piston side of the at least one first cylinder and the ring side of the at least one second cylinder relative to the position of the piston to change the cylinders and thus to adjust the position of the rollers relative to the frame. In an alternative embodiment, instead of a second
  • Pressure medium supply and the first pressure medium supply can be used.
  • the second pressure medium supply corresponds in this case a valve that the
  • Cylinder inlet line and the ZylinderSusfahr effet connects with the pressure of the first pressure medium supply.
  • This valve may for example be a three-way valve, in which in the first switching position, the synchronous line and thus all piston surfaces are connected to the pressure of the first pressure medium supply, in the second switching position on the cylinder extension line, the piston side of the at least one first cylinder the pressure of the first pressure medium supply is applied, while the ring side of the at least one second cylinder is connected to a reservoir, and in the third switching position via the cylinder Einfahrtechnisch the ring side of the at least one second cylinder is acted upon by the pressure of the first pressure medium supply, while the Piston side of the at least one first cylinder is connected to the reservoir.
  • the first pressure medium supply is hydraulically connected to a fold-out line and to a fold-in line, wherein the fold-out line is hydraulically connected to the synchronous line and to the piston side of the at least one first cylinder and the fold-in line the cylinder intake line is hydraulically connected.
  • connection are not interrupted and the piston side and the ring side of the at least one first cylinder and the piston side and the ring side of the at least one second cylinder are acted upon by the first pressure.
  • first, second and third interruptible connection are interrupted and the ring side of the
  • At least one second cylinder is pressurized.
  • the cylinders can also be connected differently.
  • the Ausklapp-line and the EinklappLeitung are hydraulically connected to a working cylinder, so that upon actuation of the Ausklapp-line with the first pressure of the piston of the working cylinder extends and upon application of the Einklapp-line with the first pressure of the Piston of the working cylinder retracts.
  • the synchronization of the positions of the pistons of the at least one first cylinder and the at least one second cylinder is coupled to an extension of the working cylinder. This ensures that with each extension of the working cylinder, the pistons of the working sections are synchronized with each other. It is therefore not a separate circuit for
  • connection can be caused to be compensated when extending the working cylinder.
  • An example of such a working cylinder is a folding cylinder of a disc harrow. This will become the working sections of a Disc harrow with multi-part frame, which can be switched between transport position and working position, folded for transport over a public road to reduce the lateral extent of the device, and lowered in the field by extending the working cylinder to obtain a large working width and the tillage tools in one
  • the Ausklapp-line may be connected to the ring side of the working cylinder and the Einklapp-line with the piston side of the working cylinder.
  • the Ausklapp-line may be connected to the ring side of the working cylinder and the Einklapp-line with the piston side of the working cylinder.
  • the pressure medium supply is hydraulically connected to a folding-in line, wherein the folding-in line is hydraulically connected via the first and a second interruptible connection to the ring side of the at least one first cylinder and the ring side of the at least one second cylinder.
  • the connecting line between the ring side of the at least one first cylinder and the piston side of the at least one second cylinder on a fourth interruptible connection is a releasable seat-tight valve, particularly preferably a check valve.
  • the first and second interruptible connections are not interrupted while the fourth interruptible connection is interrupted.
  • the piston side of the at least one second cylinder is not exposed to the first pressure when the connecting line is exposed to the first pressure. Consequently, the piston of the at least one first cylinder and the piston of the at least one second cylinder move to their retracted end position.
  • Connecting line and a part of at least one of the at least one first cylinder and the at least one second cylinder volume defined are hydraulically coupled to the pressure medium.
  • the pressure medium supply with a
  • Ausklapp-line hydraulically connected, wherein the Ausklapp-line via at least two third interruptible connections, which are preferably seat-tight valves, particularly preferably check valves, with the piston side of the at least one first cylinder and the piston side of the at least one second cylinder is hydraulically connected.
  • the first to fourth interruptible connections are interrupted so that the pistons of the at least one first cylinder and of the at least one second cylinder do not move.
  • the Einklapp-line and the Ausklapp-line are hydraulically connected to a working cylinder, so that when an act of loading the Ausklapp-line with the first pressure of the piston of the working cylinder extends and upon application of EinklappLeitung with the first pressure of the piston of the working Cylinder retracts.
  • the synchronization of the positions of the piston of the at least one first cylinder and the at least one second cylinder is coupled with a retraction of the working cylinder via the connection of the folding line and the Ausklapp line with at least one working cylinder.
  • About the Interruptible connections ensures that, by extending the working cylinder, there is no change in the positions of the pistons of the at least one first cylinder and of the at least one second cylinder.
  • the Ausklapp-line can not be connected via the third interruptible connections with the piston sides of the at least one first cylinder and the at least one second cylinder.
  • the Ausklapp- line is individually controlled by the pressure medium supply, such as its own valve, while a line is performed with the third interruptible connections to a reservoir or a surge tank.
  • the line with the two third interruptible connections to a valve can not be connected via the third interruptible connections with the piston sides of the at least one first cylinder and the at least one second cylinder.
  • the Ausklapp- line is individually controlled by the pressure medium supply, such as its own valve, while a line is performed with the third interruptible connections to a reservoir or a surge tank.
  • the piston side of the at least one first cylinder is hydraulically connected to a cylinder extension line
  • the ring side of the at least one second cylinder is connected to a cylinder inlet line
  • the piston of the at least one first cylinder and the piston of the at least one second cylinder move when the cylinder extension line is pressurized with the second pressure, and when the cylinder inlet line is pressurized with the second pressure, the piston of the at least one first cylinder and the piston of the at least one second cylinder.
  • the fourth interruptible connection is not interrupted, the amount of the pressurized medium, which completely fills the volume defined by the connection line and a part of at least one of the at least one first cylinder and the at least one second cylinder, can continue the movement of the at least couple a first cylinder with the at least one second cylinder.
  • the fourth interruptible connection is a sealed control piston.
  • the fourth interruptible connection can also be a controllable
  • Check valve a proportional valve or another valve that is open in the direction of the ring side of the at least one first cylinder and in the direction of the piston side of the at least one second cylinder is open only when pressure on the cylinder extension line.
  • the present invention provides a method for operating a hydraulic adjusting device for adjusting an agricultural
  • a pressurized pressure medium is provided which is introduced into a connection line which hydraulically connects the ring side of at least one first cylinder to the piston side of at least one second cylinder.
  • the pressure is applied to the piston of the at least one first cylinder and the piston of the at least one second cylinder and the piston of the at least one first cylinder and the piston of the at least one second cylinder is moved into an end position.
  • a defined by the connecting line and a part of at least one of the at least one first cylinder and the at least one second cylinder volume is completely filled with an amount of the pressure medium and the piston of the at least one first cylinder and the piston of the at least one second cylinder by this amount together coupled so that the position of the piston of the cylinder is fixed relative to each other.
  • the pressure on a fold-out line connected to a working cylinder and all sides of the piston and all ring sides of the at least one first cylinder and the at least one second cylinder are preferably applied simultaneously and the piston of the working cylinder is simultaneously extended and the piston of the at least one extended first cylinder and the piston of the at least one second cylinder in an extended end position.
  • the pressure is simultaneously applied to a folding-in line connected to a working cylinder and all annular sides of the at least one first cylinder and the at least one second cylinder and at the same time the piston of the working cylinder retracted and the piston of the at least one first cylinder and the piston of the at least one second cylinder retracted into a retracted end position.
  • Figure 1 shows a hydraulic circuit diagram of a hydraulic actuating device according to an embodiment of the present invention.
  • FIG. 2 shows a hydraulic circuit diagram of a hydraulic actuating device according to a further exemplary embodiment of the present invention.
  • FIG. 3 shows an agricultural tillage implement in the form of a
  • FIG. 1 shows a hydraulic circuit diagram of a hydraulic actuating device according to a first preferred embodiment, which has a first pressure medium supply 1 for providing a pressurized pressure medium.
  • the pressure medium supply has a pressure line 2 and a reservoir 3.
  • the adjusting device furthermore has a first working section 4 and a second
  • the cylinders 6, 6a, 7, 7a are each designed to be double-acting and have a hydraulic connection on their piston side and a hydraulic connection on their ring side.
  • the cylinders are hydraulically connected in parallel, so it is the piston sides of the two first cylinders 6, 6a connected to each other hydraulically and the ring sides of the two first cylinders 6, 6a connected to each other hydraulically, the same applies accordingly for the two second cylinder 7, 7a.
  • this hydraulic parallel circuit it is the piston of the cylinder 6, 6a, 7, 7a possible to oscillate their set position relative to each other and the previous
  • the annular sides of the two first cylinders 6, 6a are hydraulically connected to the piston sides of the two second cylinders 7, 7a.
  • the two first cylinders 6, 6a are designed as master cylinders and the two second cylinders 7, 7a as slave cylinders. Consequently, the annular surface of the two first cylinders 6, 6a substantially corresponds to the piston surface of the two second cylinders 7, 7a.
  • This area ratio ensures a hydraulic synchronization, through which the pistons of the cylinders of both working sections travel the same way when one side is actuated.
  • the connecting line 11 is so to a first interruptible connection 14, preferably a pilot-operated check valve or another seat-tight connection, connected at any time pressure medium between the ring side of the master cylinder and the
  • Piston side of the slave cylinder can be moved, but in the interrupted state no pressure medium can escape via the interruptible connection 14.
  • the piston sides of the master cylinders 6, 6a of the first working section 4 are hydraulically connected via a master line 9 to a second interruptible connection 12, preferably a check valve or another seat-tight seal
  • a third interruptible connection 13 preferably a pilot-operated check valve or another seat-tight connection.
  • the first, second and third interruptible connection 12, 13, 14 are connected to a synchronous line 15.
  • the interruptible connections are preferably designed so that they are only connected when pressure is applied to the synchronizing line 15.
  • the hydraulic adjusting device further comprises a second pressure medium supply 18 with a pressure line 19 and a reservoir 20, which via a first locking block 21 both via a cylinder extension line 16 with the piston side of the master cylinder 6, 6a as well as a cylinder inlet line 17 with the Ring side of the slave cylinder 7, 7a is hydraulically connected.
  • the second pressure medium supply 18 with a pressure line 19 and a reservoir 20, which via a first locking block 21 both via a cylinder extension line 16 with the piston side of the master cylinder 6, 6a as well as a cylinder inlet line 17 with the Ring side of the slave cylinder 7, 7a is hydraulically connected.
  • Pressure medium supply 18 has a pressure line 19 and a reservoir 20.
  • the first blocking block 21 is characterized in that, when the pressure line 19 is connected to the cylinder extension line 16, it connects the cylinder retraction line 17 to the reservoir 20 and, conversely, when connecting the pressure line 19 to the cylinder retraction line 17, the cylinder extension line 16 the reservoir 20 connects, but otherwise holds the cylinder extension line 16 and the cylinder retraction 17 closed.
  • the synchronous line 15 is hydraulically connected to a Ausklapp line 23.
  • the Ausklapp-line 23 is hydraulically with the first pressure medium supply 1 connected.
  • a folding-in line 24 is connected hydraulically to the first pressure medium supply 1 .
  • the Ausklapp-line 23 is hydraulically connected via a second locking block 22 to the piston side of the master cylinder 6, 6a and the Einklapp-line 24 is via the second locking block 22 with the cylinder-Einfahrtechnisch 17 between the second pressure medium supply 18 and the first locking block 21 connected.
  • the second blocking block 22 is characterized in that the connection of the
  • Ausklapp-line 23 with the piston side of the master cylinder 6, 6a is only open when the Ausklapp-line 23 or the Einklapp-line 24 is pressurized.
  • connection of the Einklapp-line 24 with the cylinder Einfahrtechnisch 17 between the second pressure medium supply 18 and the first locking block 21 is only open when the Ausklapp-line 23 or the Einklapp- line 24 is pressurized.
  • the Ausklapp-line 23 and the Einklapp-line 24 are hydraulically connected via a third locking block 25 with a working cylinder 8.
  • the working cylinder 8 is double-acting and has on its piston side and on its ring side in each case a hydraulic connection.
  • the Ausklapp-line 23 is connected via the third locking block 25 with the piston side of the working cylinder 8 and the Einklapp-line 24 is connected via the third locking block 25 with the ring side of the working cylinder 8.
  • the third blocking block 25 is characterized in that the connection of the Ausklapp-line 23 with the piston side of the working cylinder 8 is only open when the Ausklapp-line 23 or the Einklapp-line 24 is pressurized.
  • the connection of the Einklapp-line 24 with the ring side of the working cylinder 8 is only open when the Ausklapp-line 23 or the EinklappLeitung 24 is pressurized.
  • a hydraulic adjusting device as shown in FIG. 1 can be used, for example, for depth guidance of an agricultural cultivator 100, such as a disc harrow, with two separate working sections 4, 5, as shown in FIG.
  • the tillage implement illustrated therein has a frame 50 on which hollow discs are shown as an example of the tools 60 in two laterally folding work sections 4, 5 are arranged.
  • the working sections 4, 5 are folded to move the tillage implement 100 on the road or in the field to the place of use and unfolded at the site for tillage.
  • In the working direction behind the tools 60 arranged on the frame are for each working section 4, 5 follower rollers 40, 41 for
  • the follower rollers 40, 41 can be raised or lowered relative to the frame 50 and thus the
  • the working cylinder 8 is used to fold and unfold the lateral portions, the first cylinders 6, 6a are used for the flea adjustment of the follower rollers 40 of the first working section 4 and the second cylinders 7, 7a for the flea adjustment of the follower rollers 41 the second working section 5.
  • the same pressure of the first pressure medium supply 1 is applied to all cylinder connections of the cylinders 6, 6a, 7, 7a when the work sections 4, 5 are folded out, whereby the pistons of the cylinders 6, 6a, 7, 7a up to an extended stop.
  • the follower rollers 40, 41 are in the lowest position and the tools 60 are accordingly in their highest position on the machined
  • the desired working height of the tools 60 can then be adjusted via the second pressure medium supply 18, and the follower rollers 40, 41 can compensate for uneven floors and bumps by means of hydraulic oscillation, without the tools 60 deviating from their set machining depth.
  • FIG. 2 shows a hydraulic circuit diagram of a hydraulic adjusting device according to a second preferred embodiment, which is also a first
  • the first pressure medium supply 1 for providing a pressurized medium under pressure.
  • the first pressure medium supply 1 also has a pressure line 2 and a reservoir 3 in the second embodiment.
  • the adjusting device also has a first working section 4 and a second working section 5, wherein the first working section 4 has two first cylinders 6, 6a of the same size and the second working section 5 has two second cylinders 7, 7a of the same size.
  • the cylinders 6, 6a, 7, 7a are each designed to be double-acting as in the first embodiment and have a hydraulic connection on its piston side and a hydraulic connection on its ring side.
  • the annular sides of the two first cylinders 6, 6a are hydraulically connected to the piston sides of the two second cylinders 7, 7a.
  • the two first cylinders 6, 6a are designed as master cylinders and the two second cylinders 7, 7a are designed as slave cylinders. Consequently, the equivalent Ring surface of the two first cylinder 6, 6a substantially the piston surface of the two second cylinder 7, 7a.
  • This area ratio ensures that the pistons of the cylinders of both working sections travel the same way when one side is activated.
  • the connecting line 11 is hydraulically connected via a first interruptible connection 14, preferably a pilot-operated check valve or another seat-tight connection, to a folding-in line 31 and connected via this to the first pressure medium supply 1.
  • the first pressure medium supply 1 is likewise connected to the piston side of the master cylinders 6, 6a via a second interruptible connection 33 via a fold-out line 32, and via the third interruptible connection 34 via the
  • This second and third interruptible connection 33, 34 is also preferably carried out as a check valve or another seat-tight connection. They are not interrupted at a pressure on the piston side of the cylinder of the two working sections 4, 5, thereby causing a flow of pressure medium in the direction of
  • the hydraulic control device in Fig. 2 also has a second
  • the second pressure medium supply 18 has a pressure line 19 and a reservoir 20.
  • the first locking block 21 is characterized in that it connects the cylinder-Einfahrtechnisch 37 with the reservoir 20 upon application of the pressure of the pressure line 19 to the cylinder extension line 36 and vice versa when applying the pressure of the
  • the Einklapp line 31 is hydraulically connected via a further interruptible connection 35, which is preferably a check valve or another seat-tight connection, with the cylinder Einintechnisch 37, that the Einklapp-line 31 and the cylinder-Einfahrtechnisch 37 are hydraulically connected when on the side of the EinklappLeitung 31 is applied pressure, and are separated when on the side of the retraction line 37, a pressure is applied.
  • interruptible connection 30 arranged, preferably a releasable
  • Pressure medium supply 18 is present. Furthermore, the fifth is interruptible
  • Compound 30 is arranged so that it does not lie between the first interruptible connection 14 and the ring side of the master cylinder 6, 6a.
  • the Ausklapp-line 32 and the Einklapp-line 31 are hydraulically connected to a working cylinder 8.
  • the working cylinder 8 is double-acting and has on its piston side and on its ring side in each case a hydraulic connection.
  • the Ausklapp-line 23 is connected to the piston side of the working cylinder 8 and the Einklapp-line 24 is connected to the ring side of the working cylinder 8.
  • Adjusting device can like the first embodiment for the depth control of an agricultural tillage implement, such as a disc harrow, with two separate working sections 4, 5 are used.
  • an agricultural tillage implement such as a disc harrow
  • two separate working sections 4, 5 are used.
  • Embodiment drive the cylinder 6, 6a, 7, 7a at pressure on the EinklappLeitung 31 in its retracted end position while the working sections 4, 5 their
  • Cylinder extension line 36 can then be adjusted to the desired working height of the tools 60.
  • the releasable check valve of the fifth interruptible connection 30 is unlocked, so that the pressure medium between the ring side of the master cylinder 6, 6a and the piston side of the slave cylinder 7, 7a can flow.
  • Fig. 3 shows a disc harrow as an example of an agricultural
  • Soil cultivation device 100 in which with a hydraulic adjusting device according to the invention, the processing height can be adjusted and the
  • Caster rollers 40, 41 of the working sections 4, 5 can swing hydraulically according to the schemes described above.
  • the two working sections 4 and 5 are located on both sides of a supporting frame 50 (relative to the direction of travel), the two working sections 4 and 5.
  • Each working section 4, 5 comprises one each over a working cylinder 8 between a (not shown) transport position and the work position shown convertible folding frame 51, 52, each with two rows of hollow discs 60, wherein in
  • Adjustment device oscillate about their set position and thus compensate for uneven floors and ensure a uniform reconsolidation.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Zoology (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

La présente invention concerne un dispositif de réglage hydraulique d'une machine de traitement de sol agricole. Ledit dispositif comprend une première alimentation en fluide de pression (1) destinée à fournir un fluide de pression sous pression et au moins une première section de travail (4) et une deuxième section de travail (5). Les première et deuxième sections de travail (4, 5) comportent au moins des premier et deuxième cylindres (6, 7). Les cylindres (6, 7) présente chacun une double action et comporte un raccord hydraulique du côté piston et un raccord hydraulique du côté bague. Une conduite de liaison (11), qui est soumise à la pression par le biais d'une première liaison interruptible (14), relie hydrauliquement le côté bague de l'au moins un premier cylindre (6) au côté piston de l'au moins un deuxième cylindre (7) de sorte que les pistons (6, 7) des cylindres peuvent être amenés chacun dans une position finale par application de la pression. Dans la position finale, une certaine quantité de fluide de pression sous pression remplit complètement le volume défini par la conduite de liaison (11) et une partie d'au moins un des cylindres (6, 7) de sorte que les pistons (6, 7) des cylindres soient couplés l'un à l'autre par cette quantité et que leur position l'un par rapport à l'autre soit fixée lorsque la liaison interruptible (14) est interrompue.
EP19733660.5A 2018-06-05 2019-06-05 Dispositif de réglage hydraulique Withdrawn EP3800975A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102018208855.1A DE102018208855A1 (de) 2018-06-05 2018-06-05 Hydraulische Stelleinrichtung
DE102018208965 2018-06-06
PCT/DE2019/100499 WO2019233528A1 (fr) 2018-06-05 2019-06-05 Dispositif de réglage hydraulique

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EP3800975A1 true EP3800975A1 (fr) 2021-04-14

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EP19733660.5A Withdrawn EP3800975A1 (fr) 2018-06-05 2019-06-05 Dispositif de réglage hydraulique

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EP (1) EP3800975A1 (fr)
WO (1) WO2019233528A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102024106598A1 (de) * 2024-03-07 2025-09-11 Horsch Maschinen Gmbh Klappeinrichtung, landwirtschaftliches Arbeitsgerät mit Klappeinrichtung und Verfahren zum Klappen von Rahmenteilen

Family Cites Families (9)

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Publication number Priority date Publication date Assignee Title
US3630290A (en) * 1969-04-28 1971-12-28 Deere & Co Hydraulic power lift system for tractor and implement
US4354688A (en) 1981-03-03 1982-10-19 International Harvester Co. Hydraulic circuit for a tractor drawn implement having remote variable height selector
US4427207A (en) 1981-11-13 1984-01-24 Allis-Chalmers Corporation Hydraulic system providing equalized load on implement support wheels
US4700784A (en) * 1986-01-31 1987-10-20 J. I. Case Company Combined depth-control and wing-lift hydraulic circuit
CA2254801C (fr) * 1998-11-30 2006-05-23 Flexi-Coil Ltd. Pulverisateur comprenant une commande hydraulique pour depliage sequentiel controle
DE102004025522B4 (de) * 2004-05-25 2014-02-13 Amazonen-Werke H. Dreyer Gmbh & Co. Kg Landwirtschaftliche Bearbeitungsmaschine mit hydraulischer Betätigungsvorrichtung
US10299423B2 (en) * 2013-12-11 2019-05-28 Cnh Industrial Canada, Ltd. Computer controlled hydraulic bleed sequence
US9961823B2 (en) * 2016-03-02 2018-05-08 Deere & Company Hydraulic control system of an implement for a work machine and method thereof
EP3254549B1 (fr) * 2016-06-08 2019-03-20 Kverneland Group Kerteminde AS Engin agricole

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