EP2825778A1 - Vorrichtung nebst hydrauliksystem zur ansteuerung mindestens eines ersten hydraulischen verbrauchers und mindestens eines zweiten hydraulischen verbrauchers - Google Patents
Vorrichtung nebst hydrauliksystem zur ansteuerung mindestens eines ersten hydraulischen verbrauchers und mindestens eines zweiten hydraulischen verbrauchersInfo
- Publication number
- EP2825778A1 EP2825778A1 EP13709777.0A EP13709777A EP2825778A1 EP 2825778 A1 EP2825778 A1 EP 2825778A1 EP 13709777 A EP13709777 A EP 13709777A EP 2825778 A1 EP2825778 A1 EP 2825778A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hydraulic
- fluid
- hydraulic consumer
- consumer
- flow divider
- 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
- 239000012530 fluid Substances 0.000 claims abstract description 82
- 230000033001 locomotion Effects 0.000 claims description 27
- 230000000903 blocking effect Effects 0.000 claims description 14
- 230000007935 neutral effect Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004941 influx Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002689 soil Substances 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
- F15B11/22—Synchronisation of the movement of two or more servomotors
-
- 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
-
- 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
- F15B2211/40523—Flow control characterised by the type of flow control means or valve with flow dividers
-
- 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
- F15B2211/78—Control of multiple output members
- F15B2211/782—Concurrent control, e.g. synchronisation of two or more actuators
Definitions
- the invention relates to a device for controlling at least one first hydraulic consumer and at least one second hydraulic consumer according to the feature configuration of the preamble of patent claim 1.
- the invention further relates to a hydraulic system with such a device for controlling two hydraulic consumers.
- Such a device is used, for example, in machines, such as loaders, for moving loads and serves to control actuators with working cylinders, in which pistons are moved or moved in accordance with a movement of the load to be moved.
- tilting of the machine may occur in the event of unfavorable center of gravity displacement, which is why it must comply in particular with the safety regulations specified in the safety standard EN 15000. Accordingly, at the risk of tipping a Lastmomentver josrnde movement to prevent and allow a load torque-reducing movement.
- the machine may also tilt.
- a device for controlling at least two hydraulic consumers each formed as a hydraulic cylinder, different extent of cylinder housings extendable piston rod drives for the purpose of driving two equally trained blade halves of an excavator. Due to the different travel lengths of the piston rod drives, it is possible to lift the blade when the blade mechanism is closed and penetrating into an earth mass break out of the rest of the ground, the closed bucket is tilted by the longer working cylinder performs the pertinent tilting movement.
- a control line is provided downstream of the Stromteilerpfad that supplies the working cylinder with the lower extension length, after a flow divider that supplies the two sides of the piston with hydraulic fluid a 3/2-way valve controls such that with increasing pressure when breaking the soil of this valve reaches its closed position, so that a further influx of working fluid is suppressed to this hydraulic cylinder and this is held without overload in its shovel closing position.
- DE 1 1 2005 001 879 T5 discloses a fluid pressure actuator control system for controlling an adjustment of a predetermined fluid pressure actuator of at least two fluid pressure actuators as hydraulic consumers to which flows of pressurized fluid discharged from a common fluid pressure source are individually via a flow divider can be assigned.
- each hydraulic consumer is assigned an independent blocking device which can be actuated by a central control device, wherein operating states at the respective hydraulic consumers are monitored via comprehensive sensor technology and cause the control device to be in the form of valves via the respective blocking device Supply quantities of fluid to the consumers or, preferably again, to discharge them into a tank.
- An inventive device and a hydraulic system comprising such a device is characterized in that a control line from that of the hydraulic Consumers, each with higher pressure to the flow divider leading fluid connection is guided to the locking device such that the higher pressure actuates the locking device in the direction of its blocking position, so that in any pressure situation of the driven hydraulic consumers in the fluid connection from the hydraulic consumer with higher pressure fluid pressure applied to the flow divider does not reach the hydraulic consumer with lower pressurization and consequently does not actuate it in an unintentional manner.
- a fluid pressure present in the corresponding fluid connection maximally reaches the blocking device, which blocks a further fluid path to the respective other hydraulic consumer.
- the at least one preferably designed as a valve, particularly preferably as a check valve, designed locking device driven by the flow divider fluid pressure and blocked by the originating from the hydraulic consumer with each higher pressurization fluid pressure.
- the at least one blocking device is blocked on the occurrence of a fluid leakage current at the flow divider.
- this can be advantageously closed by the control line, wherein the line for controlling the locking device is connected in an advantageous manner fluid leading to the fluid connection from the hydraulic consumer with higher pressure to the flow divider.
- fluid pressures occur in both fluid directions between the interconnected via the flow divider hydraulic consumers, which are alternately acted upon with higher and lower pressure.
- the respective fluid direction associated, provided in the fluid connection from the flow divider to the respective hydraulic consumer with lower pressurization locking devices are provided.
- Former possibly via the flow divider leading leakage currents are thus avoided with certainty.
- control line between a junction of the locking device for locking the same and a branch point extends, opens in both a coming from the output of a current divider path of the flow divider fluid line and the Another fluid line that leads in the direction of the consumer with the higher pressurization or fluidit- rend connected to this consumer.
- the invention further relates to a hydraulic system comprising at least a first hydraulic consumer and at least one second hydraulic consumer and a device according to the invention for controlling the hydraulic consumers.
- the device according to the invention can be manufactured as a tradable unit, independent of the hydraulic consumers and a pressure supply, distributed and used in a hydraulic system.
- the first and / or the second hydraulic load can be fluid-actuated actuators, each with two separate actuator sides, which can be alternately fluid-conductively connected to the pressure supply for movement of the respective actuator.
- the actuators each comprise a piston which can be moved in and out in a working cylinder, wherein the actuator sides assigned to a retracting movement of the respective piston expediently correspond to the current Dividers are connected.
- an extending movement of the respective piston associated actuator sides may be connected to the flow divider. In this way, a synchronization, in other words a coordinated movement, both pistons and actuators guaranteed, either in the respective retraction direction or in the respective extension direction. Also combinations of coupled retraction and extension movements are conceivable.
- one of the actuators comprises a telescopic cylinder with a piston preferably retractable and extendable in a horizontal direction and a further actuator comprising a lifting cylinder with a further piston which can be retracted and retracted therein in a vertical direction Locking device between the flow divider and the lifting cylinder is arranged.
- the total movement caused by the actuators is divided into a preferably horizontally directed component of movement and another preferably directed in the vertical direction of movement component and correspondingly changeable via the telescopic cylinder or the lifting cylinder.
- FIG. 1 to 3 each show a circuit diagram of a device according to the invention with a device for controlling hydraulic consumers equipped hydraulic system.
- a hydraulic system respectively shown in FIGS. 1 to 3 comprises a first hydraulic consumer 10, which is designed as an actuator with a working cylinder, more precisely a telescopic cylinder, and a second hydraulic consumer 12, which also acts as an actuator with a working cylinder, more precisely a lifting cylinder is formed.
- a first piston 14 and a second piston 16 is movably guided, wherein the first piston 14 in a horizontal direction H in the corresponding working cylinder and retractable and the second piston 16 in a vertical direction V in the corresponding working cylinder and retractable.
- a retraction side 18.1, 18.2 or an extension side 20.1, 20.2 of the corresponding working cylinder is fluid-connected to a pressure supply P and pressurized with fluid with a presettable pressure. Fluid is activated by means of an actuatable
- the second valve 24, which between an ON position (left) for pressurizing a Einfahrseite 1 8.2 of the second hydraulic consumer 12, a NEUTRAL Stel ment (center) to conclude sämtl IER fluid connections and an OFF position (right) for pressurizing a Ausfahrseite 20.2 of the second hydraulic consumer 12 is switchable, is such switched between the pressure supply P and the two hydraulic consumers 10, 1 2, that the second valve 24 directly to the extension side 20.2 of the second hydraulic consumer 12 and both Einfahrlect 18.1 , 18.2 of the two hydraulic consumers 10, 1 2 is connected.
- a flow divider 26 To divide one of the pressure supply P via the second valve 24 to the Einfahrier 1 8.1, 1 8.2 of the hydraulic consumers 10, 12 guided fluid flow into corresponding partial flows, a flow divider 26 is provided.
- the flow divider 26 has a first throttle 28.1 and a second throttle 28.2 which supply the 100% amount of fluid flow coming from the pressure supply P into a first partial flow leading to the first hydraulic consumer 10, for example 67%, and to the second hydraulic consumer 1 2 leading, exemplary Divides 33% amount of second fluid flow. It is understood that instead of this fixed predetermined ratio between the first and second partial flow, the two throttles 28.1, 28.2 can be individually designed differently adjustable.
- the flow divider 26 is designed for a volume flow range of, for example, 1 50 l / min.
- a check valve 36 is provided, which closes at a pressure supply to the Einfahrseite 18.1 of the first hydraulic consumer 10 via the first valve 22 to a pressure drop across the first fluid connection F1 to avoid.
- a locking device 38 is provided, which is designed as a check valve and via a fluidrous- rend to the first fluid connection F1 connected, designed as a leakage power line control line S is lockable.
- the fluid and pressure-carrying control line S (dashed line drawn) extends between a junction AS of the locking device 38 for locking the same and a branch point AB, in which both a coming from the output A1 of a current divider path ST1 of the flow divider 26 fluid line FT opens as well as the other fluid line Fl, which opens in the direction of the consumer 10 with the higher pressurization.
- the current divider path ST2 of the current divider 26 is connected via the output A2 of the current divider 26 to the fluid line F2 ', which further leads to an input-side connection of the blocking device 38.
- the Swiftstel le AS and the consumer 12 leading fluid line or connection F2 are connected to the output side of the check valve 38, the locking member opens in the direction of said output side at queuing a corresponding fluid pressure and otherwise taking into account the differential pressure between the input and output side of the check valve 38th can also remain in a closed Stell.
- the flow divider 26 and the locking device 38 are part of a device 32 for controlling the two hydraulic consumers 10, 1 2, wherein the device 32 further includes the check valve 36 and switchable Venti le 34.1, 34.2, 34.3.
- a first switchable valve 34.1 is arranged in the first fluid connection F1 from the flow divider 26 to the entry side 18.1 of the first hydraulic consumer 10.
- a second switchable valve 34.2 is arranged to bypass the flow divider 26 together with the barrier means 38 at an immediate pressurization of the pressure supply P via the second valve 24 to the retraction side 18.2 of the second hydraulic consumer 12.
- a third switchable valve 34. 3 is arranged in a direct return line from the extension side 20. 1 of the first hydraulic consumer 10 to the tank connection T, that is to say parallel to the first valve 22.
- FIG. 2 differs from FIG. 1 in that the second valve 24 shown on the right is in the EI N position and, accordingly, the retraction sides 18.1, 18.2 of the two hydraulic consumers 10, 12 are pressurized via the flow divider 26 and the respective piston 14, 16 perform a horizontal first retraction E 1 and a vertical second retraction E2.
- the flow divider 26 through the fluid connections F1, F2 to Einfahrseite 1 8.1, 18.2 of jewei time hydraulic consumer 10, 12 guided partial flows they are forcibly coupled and the pistons 14, 1 6 move according to the flow divider 26, more precisely on the throttles 28.1 , 28.2, set Tei l- currents and the predetermined on the respective retraction side 18.1, 18.2 subvolume of the respective working cylinder in a predetermined ratio to each other.
- FIG. 3 differs from FIG. 1 in that the first valve 22 shown on the left is in the ON position and, accordingly, the inlet side 18. 1 of the first hydraulic consumer 10 is pressurized and the first piston 14 is one in FIG to the right-facing retraction E1 performs. Due to the NEUTRAL position of the second valve 24 is in the second fluid connection F2 and the flow divider 26 of the prevailing on the retraction side 18.2 of the second piston 16 pressure. In the situation shown in FIG. 3, the second piston 16 is extended far out of the working cylinder of the second hydraulic consumer 12, so that a low pressure is applied to the corresponding retraction side 18.2. This low pressure is also at the power splitter side of the check valve 36 in the first fluid connection F1. The said check valve 36 is closed due to the actuator side, much higher pressure from the pressure supply P.
- the retraction side 18.2 of the second hydraulic consumer 12 can undesirably influence the position of the second piston 16, in particular "jerkily."
- the blocking device 38 prevents such undesired influence by the blocking device 38 being exposed to the fluid pressure present in the first fluid connection F1 is controlled and closed via the control line S before such fluid flow reaches the second hydraulic connection F2 leading to the second hydraulic consumer 12 via the flow divider 26.
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 |
---|---|---|---|
DE102012005253A DE102012005253A1 (de) | 2012-03-14 | 2012-03-14 | Vorrichtung zur Ansteuerung mindestens eines ersten hydraulischen Verbrauchers und mindestens eines zweiten hydraulischen Verbrauchers |
PCT/EP2013/000734 WO2013135375A1 (de) | 2012-03-14 | 2013-03-13 | Vorrichtung nebst hydrauliksystem zur ansteuerung mindestens eines ersten hydraulischen verbrauchers und mindestens eines zweiten hydraulischen verbrauchers |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2825778A1 true EP2825778A1 (de) | 2015-01-21 |
EP2825778B1 EP2825778B1 (de) | 2018-12-26 |
Family
ID=47891595
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13709777.0A Active EP2825778B1 (de) | 2012-03-14 | 2013-03-13 | Vorrichtung nebst hydrauliksystem zur ansteuerung mindestens eines ersten hydraulischen verbrauchers und mindestens eines zweiten hydraulischen verbrauchers |
Country Status (4)
Country | Link |
---|---|
US (1) | US9631643B2 (de) |
EP (1) | EP2825778B1 (de) |
DE (1) | DE102012005253A1 (de) |
WO (1) | WO2013135375A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107269608B (zh) * | 2017-07-25 | 2018-10-16 | 广州中船文冲船坞有限公司 | Fpso船舶舵叶液压锁止系统 |
DE102018106846B3 (de) * | 2018-03-22 | 2019-07-04 | HAWE Altenstadt Holding GmbH | Human-Exoskelett |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1222376B (de) * | 1963-03-11 | 1966-08-04 | Westinghouse Bremsen Apparate | Gleichlaufregeleinrichtung fuer zwei einfach wirkende hydraulische Arbeitszylinder |
DE2356414A1 (de) * | 1973-11-12 | 1975-05-15 | Peiner Masch Schrauben | Stromteiler |
JPS58180898A (ja) | 1982-04-14 | 1983-10-22 | Ishikawajima Harima Heavy Ind Co Ltd | 低温配管の冷却方法及び装置 |
JPS58180898U (ja) * | 1982-05-25 | 1983-12-02 | 株式会社豊田自動織機製作所 | 荷役車両の油圧装置 |
JPH07158103A (ja) * | 1993-12-10 | 1995-06-20 | Japanic:Kk | クラムシェルバケットの構造及びその制御回路 |
JPH0942212A (ja) * | 1995-05-24 | 1997-02-10 | Kobe Steel Ltd | 油圧制御装置 |
US6189432B1 (en) * | 1999-03-12 | 2001-02-20 | Hunter Engineering Company | Automotive lift hydraulic fluid control circuit |
US6581622B2 (en) * | 2000-09-28 | 2003-06-24 | Glen Brand | Divider-combiner valve |
NL1024151C2 (nl) * | 2003-08-22 | 2005-02-23 | Actuant Corp | Voertuig, in het bijzonder kampeervoertuig, met hydraulisch bedienbaar dakonderdeel. |
JP4579249B2 (ja) * | 2004-08-02 | 2010-11-10 | 株式会社小松製作所 | 流体圧アクチュエータの制御システムおよび同制御方法ならびに流体圧機械 |
ITMI20051256A1 (it) * | 2005-07-04 | 2007-01-05 | Auramo Oy | Gruppo idraulico di controllo dei bracci di una pinza e pinza comprendente tale gruppo idraulico |
-
2012
- 2012-03-14 DE DE102012005253A patent/DE102012005253A1/de not_active Withdrawn
-
2013
- 2013-03-13 WO PCT/EP2013/000734 patent/WO2013135375A1/de active Application Filing
- 2013-03-13 EP EP13709777.0A patent/EP2825778B1/de active Active
- 2013-03-13 US US13/261,952 patent/US9631643B2/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2013135375A1 * |
Also Published As
Publication number | Publication date |
---|---|
US9631643B2 (en) | 2017-04-25 |
US20150007714A1 (en) | 2015-01-08 |
WO2013135375A1 (de) | 2013-09-19 |
EP2825778B1 (de) | 2018-12-26 |
DE102012005253A1 (de) | 2013-09-19 |
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