DE19821808A1 - Mobile hydraulic valve arrangement - Google Patents

Mobile hydraulic valve arrangement

Info

Publication number
DE19821808A1
DE19821808A1 DE1998121808 DE19821808A DE19821808A1 DE 19821808 A1 DE19821808 A1 DE 19821808A1 DE 1998121808 DE1998121808 DE 1998121808 DE 19821808 A DE19821808 A DE 19821808A DE 19821808 A1 DE19821808 A1 DE 19821808A1
Authority
DE
Germany
Prior art keywords
valve
valves
hydraulic
flow
hydraulic medium
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Withdrawn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
DE1998121808
Other languages
German (de)
Inventor
Andreas Merkel
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.)
Daimler AG
Original Assignee
DaimlerChrysler AG
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
Application filed by DaimlerChrysler AG filed Critical DaimlerChrysler AG
Priority to DE1998121808 priority Critical patent/DE19821808A1/en
Priority to EP99107707A priority patent/EP0957267A3/en
Publication of DE19821808A1 publication Critical patent/DE19821808A1/en
Withdrawn legal-status Critical Current

Links

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
    • 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
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
    • F15B11/042—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the feed line, i.e. "meter in"
    • 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
    • F15B2211/30515—Load holding 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
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
    • 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
    • F15B2211/3056—Assemblies of multiple 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
    • F15B2211/30—Directional control
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3122—Special positions other than the pump port being connected to working ports or the working ports being connected to the return line
    • F15B2211/3127—Floating position connecting the working ports and the return line
    • 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
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/327—Directional 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
    • F15B2211/40—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
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40553—Flow control characterised by the type of flow control means or valve with pressure compensating valves
    • F15B2211/40561—Flow control characterised by the type of flow control means or valve with pressure compensating valves the pressure compensating valve arranged upstream of the flow control means
    • 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/605—Load sensing circuits
    • F15B2211/6051—Load sensing circuits having valve means between output member and the load sensing circuit
    • F15B2211/6055—Load sensing circuits having valve means between output member and the load sensing circuit using pressure relief 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7053—Double-acting output members
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Servomotors (AREA)

Abstract

Die Erfindung bezieht sich auf eine Mobilhydraulik-Ventilanordnung zur steuerbaren Versorgung mehrerer paralleler Verbrauchereinheiten mit einem Hydraulikmedium, die jeweils wenigstens ein Schwarz/Weiß-Ventil (SW-Ventil) für jede Verbrauchereinheit aufweist. DOLLAR A Erfindungsgemäß ist den SW-Ventilen ein gemeinsames Proportionalventil vorgeschaltet, mit dem der Fluß des den jeweiligen SW-Ventilen zugeleiteten Hydraulikmediums variabel einstellbar ist. DOLLAR A Verwendung z. B. in Hydraulikanlagen von Nutzfahrzeugen.The invention relates to a mobile hydraulic valve arrangement for the controllable supply of several parallel consumer units with a hydraulic medium, each of which has at least one black / white valve (SW valve) for each consumer unit. DOLLAR A According to the invention, the SW valves are preceded by a common proportional valve, with which the flow of the hydraulic medium supplied to the respective SW valves can be variably adjusted. DOLLAR A use e.g. B. in hydraulic systems of commercial vehicles.

Description

Die Erfindung betrifft eine Mobilhydraulik-Ventilanordnung zur steuerbaren Versorgung mehrerer paralleler Verbrauchereinheiten mit einem Hydraulikmedium über jeweils wenigstens ein sogenann­ tes Schwarz/Weiß-Ventil, nachfolgend SW-Ventil bezeichnet, für jede Verbrauchereinheit. Unter dem Begriff SW- oder auch Ein-/Aus-Ventil sind zwischen mehreren Stellungen umschaltbare Venti­ le zu verstehen, die einen jeweiligen Strömungsweg, in dem sie positioniert sind, in einer zugehörigen ersten Stellung voll­ ständig freigeben und ihn in einer zugehörigen zweiten Stellung vollständig verschließen.The invention relates to a mobile hydraulic valve arrangement for controllable supply of several parallel consumer units with a hydraulic medium via at least one so-called black / white valve, hereinafter referred to as SW valve, for every consumer unit. Under the term SW or The on / off valve can be switched between several positions le to understand the particular flow path in which they are positioned fully in an associated first position constantly release and put him in an associated second position close completely.

Mobilhydraulik-Ventilanordnungen zur Ansteuerung mehrerer paral­ lel geschalteter, z. B. zu einem Ventilblock zusammengefaßter Verbrauchereinheiten in der Mobilhydraulik, wie etwa einer Lade­ flächen-Kippvorrichtung, einem Hydraulikmotor zum Betrieb einer Zapfwelle oder einem Heck-Hubwerk etc., beinhalten für diejeni­ gen Verbrauchereinheiten, für die der Fluß des Hydraulikmediums proportional steuerbar sein soll, üblicherweise jeweils ein ei­ genes sogenanntes Proportionalventil, welches die Durchflußmenge eines Hydraulikmediums mittels eines verstellbaren beweglichen Ventilgliedes, z. B. eines Ventilschiebers, entsprechend variabel zu steuern vermag und auch zur wahlweisen An- und Abkopplung der Verbrauchereinheit an bzw. von dem anstehenden Hydraulikfluß dient. Der Hydraulikfluß wird am Proportionalventil auf einen gewünschten Wert eingestellt, welcher kleiner oder gleich dem von einer Hydraulikmedium-Flußquelle bereitgestellten Hydraulik­ quellenfluß ist. Mobile hydraulic valve arrangements for controlling several paral lel switched, e.g. B. summarized into a valve block Consumer units in mobile hydraulics, such as a drawer surface tilting device, a hydraulic motor for operating a PTO or a rear linkage etc., included for those gene consumer units for which the flow of the hydraulic medium should be proportionally controllable, usually one egg each Genes so-called proportional valve, which the flow rate a hydraulic medium by means of an adjustable movable Valve member, e.g. B. a valve spool, correspondingly variable can control and also for the optional coupling and decoupling of the Consumer unit to or from the pending hydraulic flow serves. The hydraulic flow is reduced to one at the proportional valve desired value, which is less than or equal to Hydraulics provided by a hydraulic medium flow source source flow is.  

SW-Ventile und Proportionalventile werden meist durch Elektroma­ gnete geschaltet, wobei die Elektromagnete ein Magnetfeld erzeu­ gen, das eine Betätigungskraft auf den Ventilschieber verur­ sacht. Bei Proportionalventilen, die auf diesem Prinzip beruhen, bestimmt somit die Stromstärke durch den zugehörigen Elektroma­ gneten die Stellung z. B. des Ventilschiebers und dadurch die Durchflußmenge des Hydraulikmediums durch das Ventil. Zur An­ steuerung der ggf. mehreren Proportionalventile für verschiedene Verbrauchereinheiten eines Ventilblocks sind daher herkömmli­ cherweise aufwendige elektronische Steuerschaltungen für die Proportionalventile erforderlich.SW valves and proportional valves are mostly made by electroma gnete switched, the electromagnets generating a magnetic field conditions that cause an operating force on the valve spool gently. With proportional valves that are based on this principle, thus determines the current through the associated electroma the position z. B. the valve spool and thereby the Flow rate of the hydraulic medium through the valve. To the control of possibly several proportional valves for different Consumer units of a valve block are therefore conventional elaborate electronic control circuits for the Proportional valves required.

Der Erfindung liegt als technisches Problem die Bereitstellung einer Mobilhydraulik-Ventilanordnung zur steuerbaren Versorgung mehrerer paralleler Verbrauchereinheiten mit jeweils wenigstens einem SW-Ventil für jede Verbrauchereinheit zugrunde, die ein kontinuierliches Regeln des Flusses des Hydraulikmediums zu ei­ ner jeweiligen Verbrauchereinheit ermöglicht und dabei einfach und kostengünstig aufgebaut ist.The invention is a technical problem of providing a mobile hydraulic valve arrangement for controllable supply several parallel consumer units, each with at least an SW valve for each consumer unit, the one continuously regulating the flow of the hydraulic medium ner respective consumer unit enables and easy and is inexpensive.

Dieses Problem wird erfindungsgemäß dadurch gelöst, daß in der Mobilhydraulik-Ventilanordnung den verschiedenen Verbraucherein­ heiten jeweils wenigstens ein SW-Ventil zugeordnet ist und den SW-Ventilen ein gemeinsames Proportionalventil vorgeschaltet ist, mit dem der Fluß des den SW-Ventilen zugeleiteten Hydrau­ likmediums variabel einstellbar ist. Auf diese Weise wird er­ reicht, daß gegebenenfalls mit einem einzigen Proportionalventil mehrere Verbrauchereinheiten, die über die SW-Ventile individu­ ell auswählbar sind, mit einem proportionalen Hydraulikmedium­ fluß angesteuert werden können.This problem is solved according to the invention in that in the Mobile hydraulic valve arrangement for different consumers units at least one SW valve is assigned and the SW valves upstream of a common proportional valve with which the flow of the hydrau fed to the SW valves likmediums is variably adjustable. That way he will is enough that with a single proportional valve if necessary several consumer units that are individually controlled by the SW valves are selectable with a proportional hydraulic medium River can be controlled.

Eine bevorzugte Ausführungsform der Erfindung ist in der Zeich­ nung dargestellt und wird nachfolgend beschrieben.A preferred embodiment of the invention is in the drawing voltage and is described below.

Die einzige Figur zeigt ein Blockschaltbild eines Mobilhydrau­ lik-Ventilblocks, wie er in einem Nutzfahrzeug einsetzbar ist. The single figure shows a block diagram of a mobile hydro lik valve blocks as used in a commercial vehicle.  

Der Ventilblock 1 weist einen Anschluß P für eine Druckleitung 2 auf, über den mittels einer geeigneten, in der Zeichnung nicht dargestellten Pumpe, ein Hydraulikmedium eingeleitet wird. In diese Druckleitung 2 ist ein Proportionalventil 3 geschaltet, das elektrisch steuerbar ist und mit dem der Durchfluß durch die Druckleitung 2 stufenlos eingestellt werden kann. Zur Druckbe­ grenzung in der Druckleitung 2 sind im Ventilblock 1 Begren­ zungsventile 4 und 5 vorgesehen, die, für den Fall, daß in der Druckleitung 2 kritische Drücke überschritten werden, einen Druckausgleich zu einer Rückleitung 6 ermöglichen, für die am Ventilblock ein mit T bezeichneter Anschluß vorgesehen ist. In die Druckleitung 2 und in die Rückleitung 6 sind hinter das Pro­ portionalventil 3 parallel vier SW-Ventileinheiten 7 bis 10 ge­ schaltet, die jeweils ein elektrisch steuerbares 4/3-Wegeventil 11 bis 14 und jeweils zwei dazu in Serie geschaltete, elek­ trisch steuerbare 2/2-Wegeventile 15 bis 22 umfassen. Jede Ven­ tileinheit 7 bis 10 weist zwei paarweise Arbeitsanschlüsse A1, B1 . . . A4, B4 für jeweils eine Verbrauchereinheit auf. Letztere sind der Einfachheit halber nicht gezeigt.The valve block 1 has a connection P for a pressure line 2 , through which a hydraulic medium is introduced by means of a suitable pump, not shown in the drawing. In this pressure line 2 , a proportional valve 3 is connected, which is electrically controllable and with which the flow through the pressure line 2 can be adjusted continuously. For Druckbe limitation in the pressure line 2 , limita- tion valves 4 and 5 are provided in the valve block 1 , which, in the event that 2 critical pressures are exceeded in the pressure line, enable pressure equalization to a return line 6 , for which a designated T on the valve block Connection is provided. In the pressure line 2 and in the return line 6 four proportional valve units 7 to 10 are connected in parallel behind the proportional valve 3 , each with an electrically controllable 4/3-way valve 11 to 14 and two series-connected, electrically controllable 2/2-way valves include 15 to 22 . Each Ven tileinheit 7 to 10 has two pairs of work connections A1, B1. . . A4, B4 for one consumer unit each. The latter are not shown for the sake of simplicity.

Im folgenden wird die gleichartige Funktion der SW-Ventileinhei­ ten 7 bis 10 am Beispiel der SW-Ventileinheit 7 erläutert.In the following the similar function of the SW valve units 7 to 10 is explained using the example of the SW valve unit 7 .

Bei Mittelstellung des 4/3-Wegeventils 11 sind die Arbeitsan­ schlüsse A1 und B1 von der Rückleitung 6 entkoppelt und im Ven­ tilblock miteinander verbunden. Dabei kann ein Hydraulikfluß zwischen den beiden Anschlüssen unterbunden werden, indem sowohl das 2/2-Wegeventil 15 als auch das 2/2-Wegeventil 16 in eine Rückschlagventil-Stellung geschaltet werden. Bei linker Paral­ leldurchflußstellung des 4/3-Wegeventils 11 kann die zugehörige Verbrauchereinheit über den Anschluß A1 mit Hydraulikmedium be­ aufschlagt werden, und ein Rücklauf des Hydraulikmediums ist über den Anschluß B1 möglich, wenn das 2/2-Wegeventil 16 in die rechte Schaltstellung auf Durchfluß geschaltet wird. Umgekehrt kann entsprechend bei rechter Kreuzdurchflußstellung des 4/3- Wegeventils 11 und geeigneter Stellung der 2/2-Wegeventile 15, 16 über den Anschluß B1 die zugehörige Verbrauchereinheit mit Hydraulikmedium beaufschlagt werden und dabei ein Rücklauf über den Anschluß A1 stattfinden. Bei Bedarf kann zudem eine Schwimm­ stellung realisiert werden, in der die Anschlüsse A1, B1 und T verbunden sind. Dazu werden die beiden 2/2-Wegeventile 15, 16 bestromt. Des weiteren ist anzumerken, daß die Ventileinheiten 7 bis 10 durch die Rückschlagventile nahezu leckölfrei sind.When the 4/3-way valve 11 is in the middle position, the working connections A1 and B1 are decoupled from the return line 6 and connected to one another in the valve block. A hydraulic flow between the two connections can be prevented by switching both the 2/2-way valve 15 and the 2/2-way valve 16 into a check valve position. At the left parallel flow position of the 4/3-way valve 11 , the associated consumer unit can be opened via the connection A1 with hydraulic medium, and a return flow of the hydraulic medium is possible via the connection B1 if the 2/2-way valve 16 is in the right switching position Flow is switched. Conversely, if the 4/3-way valve 11 is in the right cross-flow position and the 2/2-way valves 15 , 16 are in a suitable position, the associated consumer unit can be supplied with hydraulic medium via the connection B1 and a return can take place via the connection A1. If necessary, a floating position can also be implemented in which the connections A1, B1 and T are connected. For this purpose, the two 2/2-way valves 15 , 16 are energized. It should also be noted that the valve units 7 to 10 are almost leak-free due to the check valves.

Durch das Vorschalten des einzigen Proportionalventils 3 vor die SW-Ventileinheiten 7 bis 10 ist es beim Ventilblock 1 auf einfa­ che Weise nicht nur möglich, wahlweise die Arbeitsanschlüsse A1 bis B4 für Druckbeaufschlagung oder Rücklauf zu verwenden, son­ dern auch den Hydraulikfluß für die verschiedenen Verbraucher­ einheiten stufenlos einzustellen.By placing the single proportional valve 3 from the SW-valve units 7 to 10, it is at the valve block 1 is not only possible to simp che way, either the working connections A1 to use to B4 for pressurization or rewind, son countries and the hydraulic flow to the various consumers infinitely adjustable units.

Die Ansteuerung der diversen Ventile erfolgt in nicht gezeigter Weise mittels eines Joystick. Die zugehörige Ansteuerelektronik steuert automatisch gleichzeitig das Proportionalventil 3 und die SW-Ventileinheiten 7 bis 10 an, so daß für den Anwender in der Bedienung der Ventilsteuerung kein Unterschied zu einer her­ kömmlichen Ansteuerung mehrerer Proportionalventile spürbar ist.The various valves are activated in a manner not shown by means of a joystick. The associated control electronics automatically controls the proportional valve 3 and the SW valve units 7 to 10 at the same time, so that for the user in the operation of the valve control there is no difference to a conventional control of several proportional valves.

Claims (1)

Mobilhydraulik-Ventilanordnung zur steuerbaren Versorgung mehrerer paralleler Verbrauchereinheiten mit einem Hydraulikme­ dium, mit
  • - jeweils wenigstens einem SW-Ventil (11 bis 22) für jede Ver­ brauchereinheit,
    dadurch gekennzeichnet, daß
  • - den SW-Ventilen (11 bis 22) ein gemeinsames Proportionalventil (3) vorgeschaltet ist, mit dem der Fluß des den jeweiligen SW- Ventilen (11 bis 22) zugeleiteten Hydraulikmediums variabel ein­ stellbar ist.
Mobile hydraulic valve arrangement for the controllable supply of several parallel consumer units with one hydraulic medium
  • - at least one SW valve ( 11 to 22 ) for each consumer unit,
    characterized in that
  • - The SW valves ( 11 to 22 ), a common proportional valve ( 3 ) is connected upstream, with which the flow of the respective SW valves ( 11 to 22 ) supplied hydraulic medium is variably adjustable.
DE1998121808 1998-05-15 1998-05-15 Mobile hydraulic valve arrangement Withdrawn DE19821808A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE1998121808 DE19821808A1 (en) 1998-05-15 1998-05-15 Mobile hydraulic valve arrangement
EP99107707A EP0957267A3 (en) 1998-05-15 1999-04-17 Mobile hydraulics valve arrangement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1998121808 DE19821808A1 (en) 1998-05-15 1998-05-15 Mobile hydraulic valve arrangement

Publications (1)

Publication Number Publication Date
DE19821808A1 true DE19821808A1 (en) 1999-11-25

Family

ID=7867862

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1998121808 Withdrawn DE19821808A1 (en) 1998-05-15 1998-05-15 Mobile hydraulic valve arrangement

Country Status (2)

Country Link
EP (1) EP0957267A3 (en)
DE (1) DE19821808A1 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4210252C1 (en) * 1992-03-28 1993-09-02 O & K Orenstein & Koppel Ag, 13581 Berlin, De
GB9315778D0 (en) * 1993-07-30 1993-09-15 Pridham Peter W Proportional control hydraulic valves

Also Published As

Publication number Publication date
EP0957267A3 (en) 2001-03-07
EP0957267A2 (en) 1999-11-17

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