EP1904749A1 - Hydraulische betätigungsanordnung - Google Patents
Hydraulische betätigungsanordnungInfo
- Publication number
- EP1904749A1 EP1904749A1 EP06761738A EP06761738A EP1904749A1 EP 1904749 A1 EP1904749 A1 EP 1904749A1 EP 06761738 A EP06761738 A EP 06761738A EP 06761738 A EP06761738 A EP 06761738A EP 1904749 A1 EP1904749 A1 EP 1904749A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hydraulic
- arrangement according
- actuating arrangement
- circuit
- circuits
- 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.)
- Granted
Links
- 230000002441 reversible effect Effects 0.000 claims description 9
- 238000010276 construction Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Classifications
-
- 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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
-
- 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
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20561—Type of pump reversible
-
- 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
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/20576—Systems with pumps with multiple pumps
-
- 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
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/265—Control of multiple pressure sources
-
- 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
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/27—Directional control by means of the pressure source
-
- 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
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/30505—Non-return valves, i.e. check valves
- F15B2211/3051—Cross-check valves
-
- 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
- F15B2211/40—Flow control
- F15B2211/405—Flow control characterised by the type of flow control means or valve
- F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
-
- 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
- F15B2211/40—Flow control
- F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
- F15B2211/41509—Flow control characterised by the connections of the flow control means in the circuit being connected to a pressure source and a directional control valve
- F15B2211/41518—Flow control characterised by the connections of the flow control means in the circuit being connected to a pressure source and a directional control valve being connected to multiple pressure sources
-
- 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
- F15B2211/40—Flow control
- F15B2211/42—Flow control characterised by the type of actuation
- F15B2211/426—Flow control characterised by the type of actuation electrically or electronically
-
- 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
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
Definitions
- the present invention relates to a hydraulic actuator assembly, which is used for example for operating a vehicle roof.
- hydraulic actuators such as hydraulic cylinders or hydraulically operated locks are timed to operate.
- a hydraulic pump is present, which supplies all hydraulic circuits with the pressure medium.
- several valves are available.
- DE 199 59 560 C2 discloses a hydraulic actuating arrangement which has a plurality of hydraulic circuits, each of which comprises at least one hydraulic actuating unit, in this case a hydraulic cylinder.
- the hydraulic cylinders are supplied with the pressure medium via a common hydraulic pump.
- DE 100 51 154 Al also discloses a circuit with a plurality of hydraulic circuits, which are supplied via a common hydraulic pump with pressure medium. Each hydraulic circuit two-way valves are provided with which the operating direction is reversible. A vote is made via a throttle in combination with a check valve.
- DE 196 29 065 Al a hydraulic actuator assembly for a vehicle roof is disclosed in which in turn several hydraulic circuits are pressurized with respective hydraulic drive units via a common hydraulic pump with pressure. The hydraulic cylinders can not be depressurized in this case.
- DE 198 00 985 A1 also shows a hydraulic system for a vehicle with a convertible top, whose various hydraulic drive units of respective hydraulic circuits are pressurized via a common hydraulic pump.
- hydraulic valves which allow an optional operation of the top control or other control devices, a particularly simple design system is to be made possible.
- the technical problem underlying the invention is to provide a hydraulic actuator assembly, with the independent tuning of the individual hydraulic circuits is possible and at the same time the number of necessary directional control valves can be minimized.
- This technical problem is solved by a hydraulic actuating arrangement having the features of patent claim 1.
- the invention is based on the idea to provide a separate hydraulic pump for each hydraulic circuit, but which are driven by a common drive source. Due to the construction according to the invention of the hydraulic actuating arrangement with its own hydraulic pump for each hydraulic circuit, the volume flow and the maximum pressure for each hydraulic circuit are independently tunable.
- the specification of a volume flow takes place via the dimensioning of the respective hydraulic pump.
- the specification of the hydraulic pressure in the respective hydraulic circuit can take place, for example, via the selection of a suitable pressure limiting valve.
- An advantage of the present invention is that the expansion of a hydraulic actuator assembly according to the invention is easy to implement, since a modular design is used and any additional hydraulic circuits that may be necessary at any time can be added to respective additional hydraulic pumps. In addition, it is possible to minimize the number of required directional valves per hydraulic circuit.
- An exemplary embodiment of the present invention includes an electric motor for operating the various hydraulic pumps.
- This is preferably a reversible electric motor. Due to the reversible direction of rotation of the common for all hydraulic circuits electric motor, it is possible in a simple manner to reverse the conveying direction of the individual hydraulic pumps, which then on the corresponding thus operated hydraulic actuators "reversed" are operable.
- a control unit is provided which controls the hydraulic circuits so that only one hydraulic circuit is always pressurized and the remaining hydraulic circuits are depressurized. By this configuration, it is not necessary to interpret the design of the electric motor to the total power of the various hydraulic circuits. Such a stronger electric motor is not desirable in view of the higher cost.
- the necessary maximum power of the common electric motor is only dependent on the maximum product of the desired pressure and volume flow of the respective hydraulic circuits.
- the hydraulic circuit which has the highest product of desired pressure and volume flow, determined in this advantageous embodiment of the present invention, the required maximum power of the drive motor.
- the control unit may comprise, for example, one solenoid valve per hydraulic circuit.
- An exemplary advantageous embodiment of the present invention provides that at least one pressure relief valve is present in each hydraulic circuit.
- a pressure limiting valve and a plurality of check valves may be provided in a hydraulic circuit.
- the combination of pressure relief valve and check valve in a hydraulic is selected liknik preferably use pilot operated check valves with holding function.
- An exemplary embodiment of the present invention provides that in each hydraulic circuit, a shut-off device is provided with which the respective hydraulic circuit can be switched on or off. Due to this configuration, it is possible in a simple manner to operate only one hydraulic circuit and at the same time to switch off the others.
- a shut-off device is used for this purpose, which can assume a rest position and a working position and is open in the rest position.
- a shut-off device may comprise a solenoid valve. The fact that the shut-off device is open in the rest position, an emergency operation is always automatically possible without an additional emergency valve or the like must be used.
- the open shut-off device for the respective hydraulic circuit represents, as it were, a hydraulic short circuit, whereby the respective hydraulic pump delivers the pressure medium in the hydraulic circuit without appreciable pressure.
- the actual hydraulic actuator unit such as a hydraulic cylinder, is depressurized and can be manually operated during an emergency operation. As a result, therefore, the safety of the proposed hydraulic actuator assembly is improved.
- Fig. 1 is a schematic diagram of a hydraulic actuator assembly according to the invention with several hydraulic circuits.
- Each hydraulic circuit 1, 2 and 3 has its own hydraulic pump 5, 6 and 7.
- the hydraulic pumps 5, 6 and 7 in their direction of rotation reversible, so that their conveying direction can be reversed.
- all the hydraulic pumps 5, 6 and 7 are driven by a common electric motor 4.
- the drive shaft 4a of the electric motor 4 is connected to all hydraulic pumps 5, 6 and 7.
- the hydraulic circuit 1 comprises the hydraulic pump 5, which comprises a line 10 and a line 11.
- the line 10 is connected to a conduit 12 leading to a double-acting hydraulic cylinder 8.
- the line 11 is connected to a line 13, which in turn is connected to the hydraulic cylinder 8.
- From the line 12 branches off a line 14 which is connected to a pressure relief valve 16.
- This pressure relief valve 16 allows when the preset pressure is exceeded, a drain of the pressure medium in a tank 17.
- the lines 10 and 11 are depending on the direction of rotation of the hydraulic pump 5 supply or return lines.
- the line 13 is connected via a line 15 with a further pressure relief valve 18.
- This pressure relief valve 18 allows a discharge of a pressure medium in a tank 19.
- the tanks 17 and 19 by a common tank (not shown) are formed.
- the second hydraulic circuit 2 of the hydraulic actuating arrangement is constructed very similar to the hydraulic circuit 1. However, instead of two pressure relief valves, several non-return valves are combined with a single pressure relief valve.
- the drive shaft 4 a of the electric motor 4 is coupled to a hydraulic pump 6.
- the hydraulic pump 6 is reversible in the same direction as the hydraulic pump 5 of the hydraulic circuit 1.
- the hydraulic pump 6 is connected via a feed line 30 to a line 32 leading to a hydraulic cylinder 9.
- a check valve 34 is installed in line 32.
- a return line 31 leading to the hydraulic pump 6 is in turn connected to the hydraulic cylinder 9 via a line 33. Also in the line 33, a check valve 35 is present.
- the check valve 34 located in the line 32 is connected via a hydraulic control line 36 to the line 33, in which the other check valve 35 is located.
- the check valve 35 in turn is connected via a control line 37 to the line 32 in which the check valve 34 is arranged.
- a pilot-operated check valve assembly is provided with a holding function. For example, if a pressure is applied to the check valve 35, it is ensured by the control lines 37 that the check valve 34 is unlocked. The same applies vice versa, ie if there is pressure at the check valve 34, it is ensured by the control line arrangement that the check valve 35 is unlocked.
- the lines 32, 33 are connected via two check valves 38, 39, which are connected in opposite directions, and an existing between the two check valves 38, 39 connecting line 40 with each other.
- a shuttle valve can also be used.
- In the connecting line 40 opens a line 41, at the end of an electromagnetically actuated 2/2-way valve 42 is arranged. This 2/2-way valve 42 is connected to a tank 46.
- the hydraulic circuit 2 like the hydraulic circuit 1, has a suction changeover valve 50, which is connected to a tank 51.
- the intake change valve 50 is connected via lines 52 and 53 with the lines leading to the check valves 34, 35.
- the function of this Ansaug cafeventils 50 is identical to that of the two-pressure valve 27 of the first hydraulic circuit 1, so that reference is made with respect to the operation of the above statements.
- FIG. 1 and 2 may but need not include a further hydraulic circuit 3 or more hydraulic circuits.
- FIG. 1 this is shown only schematically and comprises a further hydraulic pump 7, which are connected via lines 60, 61 to lines 62, 63 which are connected to a hydraulic cylinder (or another hydraulic actuating unit), not shown here, or of the latter. be traced back.
- further hydraulic circuit 3 is connected to a Ansaug Touchventil 67, in the same manner as the hydraulic circuits 1 and 2. Accordingly, the hydraulic circuit 3, lines 64, 65 which are connected to the lines 62 and 63 and to or lead away from the two-pressure valve or.
- This two-pressure valve 61 is also connected to a tank 66.
- tanks 17, 19, 26, 45, 46, 51, 66 can either be different or identical, so that the same tank is used for all hydraulic circuits.
- the electric motor 4 drives the hydraulic pumps 5 and 6 via the drive shaft 4a in the desired direction of rotation.
- the corresponding solenoid valve 21 or 42 is switched so that the required pressure build-up takes place in the desired hydraulic cylinder 8 or 9 of the respective hydraulic circuit 1 or 2.
- the hydraulic circuit 1 or 2 which should not be operated, remains pressureless. This also applies to all other hydraulic circuits 3, not shown here.
- the solenoid valve 21 is switched so that the hydraulic cylinder 8 is pressurized
- the directional control valve 42 is switched such that the hydraulic circuit 2 is depressurized , Then, the required pressure build-up in the hydraulic circuit 1 and the hydraulic cylinder 8 is moved in the desired manner.
- the hydraulic cylinder 9 can be shown by the circuit shown still by an external force, eg. B. be operated manually, so that even in an emergency, the hydraulic cylinder 9 can be moved in the desired manner.
- an external force eg. B. be operated manually, so that even in an emergency, the hydraulic cylinder 9 can be moved in the desired manner.
- the hydraulic circuit 2 is pressurized and the hydraulic circuit 1 is depressurized.
- the respective hydraulic pump 5 or ⁇ would then convey the hydraulic medium in the hydraulic circuit via the respective intake change valve into the tank (or oil tank or oil reservoir) 26 or 51 without appreciable pressure.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200510031971 DE102005031971A1 (de) | 2005-07-08 | 2005-07-08 | Hydraulische Betätigungsanordnung |
| PCT/DE2006/001135 WO2007006260A1 (de) | 2005-07-08 | 2006-06-30 | Hydraulische betätigungsanordnüng |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1904749A1 true EP1904749A1 (de) | 2008-04-02 |
| EP1904749B1 EP1904749B1 (de) | 2011-10-19 |
Family
ID=36993949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06761738A Not-in-force EP1904749B1 (de) | 2005-07-08 | 2006-06-30 | Hydraulische betätigungsanordnung |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1904749B1 (de) |
| DE (1) | DE102005031971A1 (de) |
| WO (1) | WO2007006260A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014216714A1 (de) * | 2014-08-22 | 2016-02-25 | Schaeffler Technologies AG & Co. KG | Vorrichtung und Verfahren zum Betätigen von Stelleinheiten |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ZA704229B (en) * | 1969-10-06 | 1971-03-31 | Elektrohydraulische Anlagen An | A hydraulic system |
| JPS5333116Y2 (de) * | 1972-08-03 | 1978-08-15 | ||
| US3977100A (en) * | 1975-09-22 | 1976-08-31 | Fiat-Allis Construction Machinery, Inc. | Hydraulic control system for elevating scraper |
| US4033127A (en) * | 1976-06-04 | 1977-07-05 | Jacob Amstutz | Hydraulically-powered vehicle accessory system supercharged by hydraulic vehicle drive system |
| DE3703297A1 (de) * | 1987-02-04 | 1988-08-18 | Fendt & Co Xaver | Hydraulikanlage zur betaetigung von arbeitsgeraeten an fahrzeugen |
| DE19525552A1 (de) * | 1995-07-13 | 1997-01-16 | Teves Gmbh Alfred | Verfahren und Anordnung zum Halten eines Fahrzeugs auf geneigter Fahrbahn |
| AT402280B (de) * | 1995-08-01 | 1997-03-25 | Hoerbiger Gmbh | Hydraulische betätigungsanordnung für ein fahrzeugverdeck |
| DE19717708C2 (de) * | 1997-04-18 | 1999-11-18 | Mannesmann Ag | Hydraulischer Antrieb für ein fahrbares Arbeitsgerät |
| DE19800985A1 (de) * | 1998-01-14 | 1999-07-15 | Mannesmann Vdo Ag | Hydraulische Anlage für ein ein aufklappbares Verdeck aufweisendes Kraftfahrzeug |
| DE19844001B4 (de) * | 1998-09-25 | 2007-08-02 | Damcos A/S | Hydraulisch betätigbare Armatur |
| DE19943863B4 (de) * | 1999-09-13 | 2005-02-24 | Wilhelm Karmann Gmbh | Cabriolet-Fahrzeug |
| AT407731B (de) * | 1999-12-07 | 2001-05-25 | Hoerbiger Hydraulik | Hydraulische fahrzeugdeckel-betätigungsanordnung |
| DE19959560C2 (de) * | 1999-12-10 | 2003-08-07 | Karmann Gmbh W | Hydraulische Schaltungsvorrichtung |
| AT410821B (de) * | 2001-01-12 | 2003-08-25 | Hoerbiger Hydraulik | Betätigungsanordnung für um eine drehachse schwenkbare teile an fahrzeugen |
| US7162869B2 (en) * | 2003-10-23 | 2007-01-16 | Caterpillar Inc | Hydraulic system for a work machine |
-
2005
- 2005-07-08 DE DE200510031971 patent/DE102005031971A1/de not_active Withdrawn
-
2006
- 2006-06-30 EP EP06761738A patent/EP1904749B1/de not_active Not-in-force
- 2006-06-30 WO PCT/DE2006/001135 patent/WO2007006260A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2007006260A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102005031971A1 (de) | 2007-01-11 |
| WO2007006260A1 (de) | 2007-01-18 |
| EP1904749B1 (de) | 2011-10-19 |
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