EP1520994A2 - Hydraulische Anordnung und Verfahren für eine solche - Google Patents
Hydraulische Anordnung und Verfahren für eine solche Download PDFInfo
- Publication number
- EP1520994A2 EP1520994A2 EP04104728A EP04104728A EP1520994A2 EP 1520994 A2 EP1520994 A2 EP 1520994A2 EP 04104728 A EP04104728 A EP 04104728A EP 04104728 A EP04104728 A EP 04104728A EP 1520994 A2 EP1520994 A2 EP 1520994A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- hydraulic
- pressure
- chamber
- supply line
- valve
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/005—Leakage; Spillage; Hose burst
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2203—Arrangements for controlling the attitude of actuators, e.g. speed, floating function
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2217—Hydraulic or pneumatic drives with energy recovery arrangements, e.g. using accumulators, flywheels
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/24—Safety devices, e.g. for preventing overload
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/021—Installations or systems with accumulators used for damping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/625—Accumulators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/6306—Electronic controllers using input signals representing a pressure
- F15B2211/6313—Electronic controllers using input signals representing a pressure the pressure being a load pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/665—Methods of control using electronic components
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/86—Control during or prevention of abnormal conditions
- F15B2211/863—Control during or prevention of abnormal conditions the abnormal condition being a hydraulic or pneumatic failure
- F15B2211/8636—Circuit failure, e.g. valve or hose failure
Definitions
- the invention relates to a hydraulic arrangement and a Method for a hydraulic arrangement, with at least one Accumulator for a hydraulic fluid, at least a hydraulic cylinder with at least one pressurizable chamber, a connecting line, based which at least one pressure accumulator with the at least a chamber is connectable, and a control unit.
- Hydraulic arrangements are known in which mechanical Pipe rupture valves are used with which Hydraulic cylinder against unintentional on or Extending secured, if one of the connected Lines should burst.
- a hedge of a pressurized chamber of a Hydraulic cylinder is at most hydraulic Arrangements in the form of a load-holding valve in Hydraulic supply lines given. Will, however additional components, such as pressure accumulators used, for example, in hydropneumatic Suspensions or pressure holding systems are used, is it makes sense, even the connecting lines of pressurized chamber of the hydraulic cylinder with a Pipe rupture to be provided because at a fraction of Connecting line line of the hydraulic cylinder abruptly could fall.
- DE 42 21 943 A1 discloses a hydraulic arrangement for discloses a lifting device of a working machine, in the several parallel hydraulic cylinder over Connecting lines and closing valves with several hydropneumatic accumulators can be connected. This is intended to create a hydropneumatic suspension be sprung with the lifting device and vibrations the working machine can be reduced.
- a pipe rupture finds, for example, in the in the Patent Abstract of Japan of Japanese Patent Application JP 58121305 AA disclosed hydraulic arrangement for a Pressure holding system of a hydraulic cylinder application. These hydraulic arrangement shows a hydraulic cylinder over a connecting line is connected to a pressure accumulator. With pressure changes in the chambers of the hydraulic cylinder the accumulator should compensate for this, so that the pressure maintained in the chambers. In case of a break or a Leakage of the accumulator line to ensure that the Hydraulic cylinder does not sink, is a mechanical Pipe burst protection in the form of a two-pressure valve in the Pressure accumulator line arranged.
- a hydraulic arrangement of the type mentioned indicate that overcomes the aforementioned problems become.
- a hydraulic cylinder and a Pressure accumulator interact with each other so be that the hydraulic cylinder against sinking at a Pipe rupture of a pressure accumulator connection line is secured.
- a Pressure drop in the connecting line to the control unit can be signaled.
- a pressure drop occurs on when the connecting line, which as hose or as Piping may be formed bursts.
- the Signal generator generates a signal change of a preferably electrical signal, which to the Control unit, preferably to an electronic Control unit is given.
- the control unit registers the corresponding signal change and generates a closing signal for the closing valve, which is then closed, so that no further hydraulic fluid from the leak pressurized chamber of the hydraulic cylinder can or the hydraulic cylinder piston in its position remains.
- the hydraulic arrangement according to the invention contains thus an electrically controlled pipe rupture protection.
- the check valve is in the immediate vicinity of Hydraulic cylinder attached, thus the largest possible Secured area of the connecting line.
- the closing valve is by the electronic Control unit electrically controlled. It is also conceivable that the closing valve is a pneumatic or hydraulically controllable valve is, which by a corresponding pneumatic or hydraulic control unit is controllable.
- a pressure switch can be used, the falls below a presettable minimum pressure by the pressure drop is deactivated and thereby a Signal change causes. Also conceivable is the use of a Pressure sensor that emits a continuous voltage signal, which is proportional to that in the connecting line changed pressure. When falling below one Presettable minimum pressure generates the electrical Control unit a closing signal.
- Volume flow sensor which is a pressure-dependent Volume flow change signaled.
- Closing signal when falling below a presettable Minimum volumetric flow rate generated.
- Hydraulic cylinder which against a sudden pressure drop the pressurized chamber or against a by a Malfunction or caused by a line break Sinking a hydraulic cylinder piston are hedged need to work with other hydraulic devices, such as with hydropneumatic accumulators, over Connecting pipes, such as hose lines, pipelines or the like, can be connected without mechanical To use pipe rupture protection.
- This advantage will especially when flowing large volume flows clearly as they can occur in a hydropneumatic suspension, as mechanical pipe rupture protection at high flow rates tend to close suddenly.
- By applying a inventive hydraulic arrangement with electronic Pipe rupture is an inadvertent closing of the Connection line avoided. It is the example Possibility of a hydropneumatic accumulator arbitrary far from the hydraulic cylinder to position, thereby Space problems solved in compact hydraulic systems can be.
- Another advantage of the invention is that it is possible, the connecting line by appropriate Control of the existing closing valve of the electric Close the pipe burst protection at will. At a corresponding hydraulic arrangement with mechanical Pipe burst protection is a separate closing valve required, which would cause additional costs.
- a temperature limit signal to be supplied can, by means of which the connecting line is closed. This can be useful, for example, if extremely cold Operating temperatures are the viscosity of a Hydraulic fluid increased so that a reliable Detection of a sudden pressure drop by the signal generator no longer exists.
- a second closing valve in the Connecting line may be provided, which is preferably immediately near the hydropneumatic pressure accumulator is attached and also by the electronic Control unit is brought into the closed position, as soon as the Pressure switch causes a signal change.
- This can For example, be avoided in a pipe break the connecting line emptied the entire pressure accumulator or loses its boost pressure.
- Connecting lines can be several sections Closing valves are arranged during a pipe break would minimize hydraulic fluid loss since only the liquid would flow out of the damaged area.
- a first supply line based on which a Connection between the at least one chamber to one Hydraulic pump or to a hydraulic tank, can be produced.
- the hydraulic cylinder can be filled differently be and in conjunction with the hydropneumatic Pressure accumulator springs around a rest position as soon as the Supply line closed and the connection line is open.
- Such a realized hydropneumatic suspension is preferably by an activation switch for the electronic control unit activated.
- the closing valve When activating the Suspension, via the control unit, the closing valve be opened.
- the control unit is in this case designed so that the closing valve is opened only when a presettable minimum pressure in the connecting line prevails and the signal generator a corresponding signal emits.
- the hydraulic cylinder contains a second pressurizable Chamber, via a second supply line with the Hydraulic pump or can be connected to the hydraulic tank.
- a second pressurizable Chamber via a second supply line with the Hydraulic pump or can be connected to the hydraulic tank.
- the hydraulic cylinder will allow the hydraulic cylinder to be active in is movable in both directions, that means that also one accelerated lowering of the hydraulic cylinder piston is feasible.
- a Pressurization of the second chamber, d. H. an active one Lowering the hydraulic cylinder piston is desirable when short lifting and lowering times, for example when loading, should be achieved.
- a Switching valve included, which at least three controllable Has positions and with which the supply lines according to either with the hydraulic pump or Hydraulic tank can be connected or closed.
- a stroke position is also the first Supply line with the hydraulic pump and the second Supply line connected to the hydraulic tank.
- the Lift position can be hydraulic fluid in the first chamber pumped and the excess hydraulic fluid from the second chamber to be drained into the hydraulic tank.
- the lowering is also the first supply line with the hydraulic tank and the second Supply line connected to the hydraulic pump.
- the Lowering can introduce hydraulic fluid into the second chamber pumped and the excess hydraulic fluid from the first chamber to be drained into the hydraulic tank.
- both in the stroke position and in the Lowering the suspension can be disabled, or the Closing valve of the connecting line to be closed, so that no hydraulic oil gets into the accumulator.
- the closing valve it may also be useful to the closing valve open to thereby fill the accumulator or the Increase spring pressure.
- the semi-closed position which also a preferred spring position represents, the first supply line is closed and the second supply line connected to the hydraulic tank.
- a Full-closed contains, in both the first Supply line and the second supply line are closed.
- a full-closed position may make sense be, if e.g. dispensed with a hydropneumatic suspension should be so that the hydraulic cylinder piston regardless of external influences can remain in its position and no feathering exercise.
- a charging line based on which a connection between the at least one chamber and the accumulator can be produced.
- the pressure accumulator always be kept or brought to a pressure level, the at least equal to the pressure level in the first chamber. This will ensure that the accumulator always is biased accordingly to a sufficiently high To produce spring action.
- the charging line in the direction of the accumulator opening check valve. This will ensure that hydraulic fluid through the charging line always only in Direction of the accumulator can flow. When disabled Suspension or closed closing valve in the Connecting line can thus no hydraulic fluid the pressure accumulator flow in the direction of the first chamber.
- the charging line with a pipe rupture valve.
- This can in turn be operated by the control unit Closing valve used in conjunction with a pressure switch become.
- a conventional one is particularly suitable here mechanical pipe rupture valve, such as a Two pressure valve.
- a mechanical pipe rupture protection is This is sufficient, as one by high volume flows caused unintended closing of the charging line none significant effect on the spring function.
- a Pipe breakage is recommended here, since at one Breakage of the charging line The closing valve of the connecting line Although close, but still hydraulic fluid could escape from the first chamber.
- a method for a hydraulic Arrangement which according to one of the previously described Embodiments may be formed. It is in the Connecting line between first chamber and accumulator a closing valve and a pressure-dependent signal generator contain. According to the invention provides that at a pressure drop in the connecting line of the signal generator generates a signal change, for example, by a Signal only exists when a minimum pressure in the Connecting line prevails and at a pressure drop the Signal drops or falls to zero. This signal change is registered by an electronic control unit, whereupon this is a closing signal for the closing valve generated and the connection line is closed.
- the inventive method thus provides an electrical Pipe burst protection is compared to conventional mechanical pipe rupture fuses the aforementioned Advantages, especially when using hydropneumatic Pressure accumulator for suspension of a hydraulic cylinder has.
- Figure 1 shows a hydraulic cylinder 10, with a first Chamber 12 and a second chamber 14. Between the chambers 12, 14, a hydraulic cylinder piston 16 is arranged.
- the first chamber 12 is via a first supply line 18th and the second chamber 14 via a second supply line 20 connected to an electrically controllable control valve 22.
- the first and the second Supply line 18, 20 optionally with a hydraulic pump 24th or a hydraulic tank 26 are connected. Furthermore is it possible by means of the control valve 22 both Supply lines 12, 14 to close.
- the control valve 22 has four positions, one Lift position, a lowered position, a semi-closed position and a full-closed position.
- In the stroke position is the first Supply line 18 with the hydraulic pump 24 and the second Supply line 20 connected to the hydraulic tank 26.
- In the lowering position is the first supply line 18 with the Hydraulic tank 26 and the second supply line 20 with the Hydraulic pump 26 connected.
- In the semi-closed position is the first supply line 18 closed and the second Supply line 20 connected to the hydraulic tank 26.
- In the full-closed position is both the first and the second supply line 18, 20 closed.
- In the fully closed position is a hydraulic pump flow through a Compensation line 28 and a pressure-dependent opening valve 30th diverted into the hydraulic tank 26.
- a hydropneumatic pressure accumulator 32 provided, which via a connecting line 34 with the first chamber 12 of the hydraulic cylinder 10 is connected.
- a connecting line 34 is an electrically controllable Closing valve 36 included, which in a closed position and can be brought into a passage position.
- a Pressure switch 38 is arranged between the closing valve 36 and the accumulator 32 .
- an electronic control unit 40 is included, which both with the control valve 22 and the closing valve 36 as also electrically connected to the pressure switch 38. Furthermore, an activation switch 42 is provided with a control mode, for the control of the closing valve 36th is activated.
- the hydraulic arrangement shown in Figure 1 stops Suspension system in which a spring effect is generated, by the hydropneumatic pressure accumulator 32 in interaction with the pressurized chamber 12 of the hydraulic cylinder 10th occurs.
- the Pressure switch 38 is provided, which at a pressure drop in the Connecting line 34, a signal change to the electronic Control unit 40 outputs.
- the Control unit 40 may be configured such that in one Lowering when activating the control mode by means of the Activation switch 42, the closing valve 36 is not opened becomes. This can prevent hydraulic fluid can flow from the accumulator 32 into the hydraulic tank. However, a closed position of the closing valve 36 is not mandatory, since the hydraulic accumulator subsequently can be recharged in a lifting position.
- the control valve 22 If the control valve 22 is brought into the semi-closed position, then the first supply line 18 is closed and hydraulic oil can flow out of the second chamber 14 into the hydraulic tank 26.
- the control mode for controlling the closing valve 36 can be activated. As a result, the closing valve 36 is opened, provided that a presettable minimum pressure has built up in the connecting line 34. In this state, the suspension is active, since now an interaction between the first chamber 12 and the pressure accumulator 32 can occur.
- hydraulic cylinder piston 16 If the hydraulic cylinder piston 16 is moved downward, for example, by a shock or by accelerating forces, this movement can be absorbed or buffered by the pressure accumulator 32, since hydraulic fluid can flow out of the first chamber 12 into the pressure accumulator 32 against a pressure force of the pressure accumulator 32. Gas compression in the pressure accumulator 32 now builds up an increased pressure in the accumulator 32, which again forces the hydraulic cylinder piston 16 in the opposite direction until it again assumes its initial position, possibly only after a few resilient cycles of movement. If the hydraulic cylinder is moved in the other direction or moved upwards, hydraulic fluid can flow into the hydraulic tank.
- the semi-closed position therefore represents the preferred spring position in which the hydraulic cylinder piston 16 is to be held in its predetermined position, wherein from the outside acting on the hydraulic cylinder piston 16 acceleration forces can be intercepted by the pressure accumulator 32.
- the control valve 22 is switched to a semi-or lowered position, after the desired position of the hydraulic cylinder piston 16 has been reached, in the semi-lowered position, if a suspension is desired. If no suspension is desired, the control valve 22 can also be brought into a fully closed position, in which both the first and the second supply line 18, 20 are closed.
- An activation of the control mode for controlling the closing valve 36 is also possible in the full-closed position, but it should be noted that then the hydraulic cylinder piston 16 can deflect only in the direction of the first chamber.
- deactivating the activation switch 42 can at any time the control mode for the closing valve 36 is inhibited, resulting in immediate closing of the control valve 36 leads. This can be done by Interest, for example, if no suspension desired becomes.
- FIG 2 is an extension of the hydraulic arrangement Figure 1 shown.
- the arrangement was a Charging cable 44 extended.
- the charging line 44 extends between the first chamber 12 of the hydraulic cylinder 10 and the Connecting line 34, wherein the connection point in the direction the accumulator 32 is behind the pressure switch 38.
- a check valve 46 is provided, which a hydraulic oil flow only in the direction of the pressure accumulator 32nd allows.
- in the direction of the accumulator behind the Check valve 46 is a mechanical pipe rupture valve 48, preferably a two-pressure valve provided.
- Das Check valve 46 ensures that Hydraulic fluid from the first chamber 12 in the Accumulator 32 can flow to load this, but no Hydraulic fluid from the accumulator 32 via the Charging line can flow into the first chamber 12. Thus, only then hydraulic fluid from the pressure accumulator 32 in the first Chamber 12 arrive when the electrical pipe rupture protection is activated or the closing valve 36 is open.
- the mechanical pipe rupture protection 48 serves to protect the Charging line 44, in the event that in the charging line a Pipe break occurs.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
Description
Es zeigt:
- Fig. 1
- einen hydraulischen Schaltplan einer ersten erfindungsgemäßen hydraulischen Anordnung und
- Fig. 2
- einen hydraulischen Schaltplan einer zweiten erfindungsgemäßen hydraulischen Anordnung mit einer Ladeleitung.
Wird keine Federung erwünscht, kann das Steuerventil 22 auch in eine Voll-Schließstellung gebracht werden, in der sowohl die erste als auch die zweite Versorgungsleitung 18, 20 geschlossen sind. Eine Aktivierung des Steuermodus zur Ansteuerung des Schließventils 36 ist auch in der Voll-Schließstellung möglich, hierbei sollte jedoch beachtet werden, dass dann der Hydraulikzylinderkolben 16 nur in Richtung der ersten Kammer einfedern kann.
Claims (13)
- Hydraulische Anordnung, mit wenigstens einem Druckspeicher (32) für eine hydraulische Flüssigkeit, wenigstens einem Hydraulikzylinder (10) mit wenigstens einer druckbeaufschlagbaren Kammer (12), einer Verbindungsleitung (34), anhand welcher der wenigstens eine Druckspeicher (32) mit der wenigstens einen Kammer (12) verbindbar ist, und einer Steuereinheit (40), dadurch gekennzeichnet, dass in der Verbindungsleitung (34) wenigstens ein durch die Steuereinheit (40) betätigbares Schließventil (36) und ein druckabhängiger Signalgeber (38), insbesondere ein Druckschalter oder Drucksensor angeordnet sind, wobei anhand des Signalgebers (38) ein Druckabfall in der Verbindungsleitung (34) an die Steuereinheit (40) signalisierbar ist.
- Hydraulische Anordnung nach Anspruch 1, dadurch gekennzeichnet, dass der druckabhängige Signalgeber ein Volumenstromsensor ist.
- Hydraulische Anordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass eine erste Versorgungsleitung (18) enthalten ist, anhand welcher eine Verbindung zwischen der wenigstens einen Kammer (12) zu einer Hydraulikpumpe (24) oder zu einem Hydrauliktank (26), herstellbar ist.
- Hydraulische Anordnung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Hydraulikzylinder (10) eine zweite druckbeaufschlagbare Kammer (14) enthält.
- Hydraulische Anordnung nach Anspruch 4, dadurch gekennzeichnet, dass eine zweite Versorgungsleitung (20) enthalten ist, anhand welcher eine Verbindung von der zweiten druckbeaufschlagbaren Kammer (14) zu der Hydraulikpumpe (24) oder zu dem Hydrauliktank (26) herstellbar ist.
- Hydraulische Anordnung nach Anspruch 5, dadurch gekennzeichnet, dass ein Schaltventil (22) enthalten ist, anhand welchem gleichzeitig die erste Versorgungsleitung (18) mit der Hydraulikpumpe (24) und die zweite Versorgungsleitung (20) mit dem Hydrauliktank (26) verbindbar ist.
- Hydraulische Anordnung nach einem der Ansprüche 5 bis 6, dadurch gekennzeichnet, dass ein Schaltventil (22) enthalten ist, anhand welchem gleichzeitig die erste Versorgungsleitung (18) mit dem Hydrauliktank (26) und die zweite Versorgungsleitung (20) mit der Hydraulikpumpe (24) verbindbar ist.
- Hydraulische Anordnung nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, dass ein Schaltventil (22) enthalten ist, anhand welchem gleichzeitig die erste Versorgungsleitung (18) schließbar und die zweite Versorgungsleitung (20) mit dem Hydrauliktank (26) verbindbar ist.
- Hydraulische Anordnung nach einem der Ansprüche 5 bis 8, dadurch gekennzeichnet, dass ein Schaltventil (22) enthalten ist, anhand welchem gleichzeitig die erste Versorgungsleitung (18) und die zweite Versorgungsleitung (20) schließbar sind.
- Hydraulische Anordnung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass eine Ladeleitung (44) enthalten ist, anhand welcher eine Verbindung zwischen der wenigstens einen Kammer (12) und dem Druckspeicher (32) herstellbar ist.
- Hydraulische Anordnung nach Anspruch 10, dadurch gekennzeichnet, dass die Ladeleitung (44) ein in Richtung des Druckspeichers (32) öffnendes Rückschlagventil (46) enthält.
- Hydraulische Anordnung nach Anspruch 10 oder 11, dadurch gekennzeichnet, dass die Ladeleitung (44) ein druckabhängiges Schließventil (48), insbesondere ein mechanisches Rohrbruchsicherungsventil, beispielsweise ein Zweidruckventil, enthält.
- Verfahren für eine Hydraulische Anordnung, welche nach einem der Ansprüche 1 bis 12 ausgebildet ist, dadurch gekennzeichnet, dass bei einem Druckabfall in der Verbindungsleitung (34) eine Signaländerung an die Steuereinheit (40) abgegeben wird, infolge dessen die Steuereinheit (40) das Schließventil (36) in eine Schließstellung bringt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10345956A DE10345956A1 (de) | 2003-10-02 | 2003-10-02 | Hydraulische Anordnung und Verfahren für eine solche |
DE10345956 | 2003-10-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1520994A2 true EP1520994A2 (de) | 2005-04-06 |
EP1520994A3 EP1520994A3 (de) | 2011-10-19 |
Family
ID=34306238
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04104728A Withdrawn EP1520994A3 (de) | 2003-10-02 | 2004-09-28 | Hydraulische Anordnung und Verfahren für eine solche |
Country Status (4)
Country | Link |
---|---|
US (1) | US7100371B2 (de) |
EP (1) | EP1520994A3 (de) |
CA (1) | CA2482738C (de) |
DE (1) | DE10345956A1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103711173A (zh) * | 2013-12-31 | 2014-04-09 | 山东宏康机械制造有限公司 | 一种挖掘机液压系统 |
EP2857592A1 (de) * | 2013-10-01 | 2015-04-08 | Deere & Company | Frontladeranordnung |
EP3267046A1 (de) * | 2016-07-07 | 2018-01-10 | DANA ITALIA S.r.l. | System zur rückgewinnung von energie aus einem hydraulischen aktuator |
EP3401271A1 (de) * | 2017-05-12 | 2018-11-14 | Robert Bosch GmbH | Variabler einstellbarer störfalldämpfer für ein hubwerk und hubwerk |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4685417B2 (ja) * | 2004-11-16 | 2011-05-18 | 日立建機株式会社 | 作業車両用液圧制御装置 |
US7415822B1 (en) | 2005-07-21 | 2008-08-26 | Deere & Company | Load sense boost device |
ITTO20050629A1 (it) | 2005-09-15 | 2007-03-16 | Cnh Italia Spa | Disposizione idraulica per un braccio di sollevamento incernierato ad un veicolo |
DE102005046914A1 (de) * | 2005-09-30 | 2007-04-05 | Bomag Gmbh | Gerät zur Schneeflächenpräparierung und Verfahren zur Steuerung eines Hydraulikkreislaufs zwischen einem solchem Gerät und einer Zugmaschine |
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DE102014213264A1 (de) * | 2013-08-19 | 2015-02-19 | Robert Bosch Gmbh | Hydraulische Anordnung zur Versorgung eines Verbrauchers |
CN103925262B (zh) * | 2014-05-06 | 2016-08-24 | 浙江科力车辆控制系统有限公司 | 一种可无线遥控的驾驶室液压举升器 |
EP2966286B1 (de) * | 2014-07-07 | 2019-06-19 | Goodrich Actuation Systems Ltd. | Hydraulisch betätigte mechanische Verriegelungsanordnung |
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EP3401271A1 (de) * | 2017-05-12 | 2018-11-14 | Robert Bosch GmbH | Variabler einstellbarer störfalldämpfer für ein hubwerk und hubwerk |
CN108862140A (zh) * | 2017-05-12 | 2018-11-23 | 罗伯特·博世有限公司 | 用于升降机构的能够可变调整的故障缓冲器和升降机构 |
CN108862140B (zh) * | 2017-05-12 | 2022-02-18 | 罗伯特·博世有限公司 | 用于升降机构的能够可变调整的故障缓冲器和升降机构 |
Also Published As
Publication number | Publication date |
---|---|
US7100371B2 (en) | 2006-09-05 |
CA2482738C (en) | 2008-03-18 |
US20050072144A1 (en) | 2005-04-07 |
DE10345956A1 (de) | 2005-04-21 |
EP1520994A3 (de) | 2011-10-19 |
CA2482738A1 (en) | 2005-04-02 |
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