EP0965763A1 - Hydraulische Steuervorrichtung - Google Patents
Hydraulische Steuervorrichtung Download PDFInfo
- Publication number
- EP0965763A1 EP0965763A1 EP99111358A EP99111358A EP0965763A1 EP 0965763 A1 EP0965763 A1 EP 0965763A1 EP 99111358 A EP99111358 A EP 99111358A EP 99111358 A EP99111358 A EP 99111358A EP 0965763 A1 EP0965763 A1 EP 0965763A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- hydraulic
- line
- pressure
- control device
- 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/01—Locking-valves or other detent i.e. load-holding devices
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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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/003—Systems with load-holding valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2203/00—Motor parameters
- F04B2203/12—Motor parameters of rotating hydraulic motors
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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
- F15B2211/30—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
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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
- F15B2211/30—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
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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
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
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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
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/3056—Assemblies of multiple valves
- F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve
- F15B2211/3057—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve having two valves, one for each port of a double-acting output member
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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
- F15B2211/30—Directional control
- F15B2211/31—Directional control characterised by the positions of the valve element
- F15B2211/3138—Directional control characterised by the positions of the valve element the positions being discrete
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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
- F15B2211/30—Directional control
- F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
- F15B2211/3157—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line
- F15B2211/31576—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line having a single pressure source and a single output member
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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
- F15B2211/30—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
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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
- F15B2211/40—Flow control
- F15B2211/405—Flow control characterised by the type of flow control means or valve
- F15B2211/40507—Flow control characterised by the type of flow control means or valve with constant throttles or orifices
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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
- F15B2211/40—Flow control
- F15B2211/41—Flow control characterised by the positions of the valve element
- F15B2211/411—Flow control characterised by the positions of the valve element the positions being discrete
-
- 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
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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
- F15B2211/40—Flow control
- F15B2211/42—Flow control characterised by the type of actuation
- F15B2211/428—Flow control characterised by the type of actuation actuated by fluid 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
- F15B2211/40—Flow control
- F15B2211/45—Control of bleed-off flow, e.g. control of bypass flow to the return line
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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
- F15B2211/70—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
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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
- F15B2211/70—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
- F15B2211/7058—Rotary output members
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/87169—Supply and exhaust
- Y10T137/87177—With bypass
- Y10T137/87185—Controlled by supply or exhaust valve
Definitions
- the invention relates to a hydraulic control device in the preamble of the claim 1 specified Art.
- the invention has for its object to provide a hydraulic control device Specify directional control of at least one hydraulic motor of the ultra-high pressure hydraulics which with a simple structure meet the special requirements in ultra-high pressure hydraulics is sufficient, reliable, and inappropriate loads on the pump or the pump system.
- the pressure signal for the idle circuit is very simple from the combination of the get both black / white directional seated valves and a load holding check valve, whereby the pressure signal (pressure drop) for switching to the idle position by the relief of the system via the second black / white directional seat valve in the branch from the consumer line to the return.
- Two are expedient for a double-acting hydraulic motor Pressure signals are alternately given to the hydraulic actuation.
- the hydraulic Operation to switch to the idle position is via the Black / white directional seated valves relieved to return.
- the two load holding check valves are hydraulically switched off unlocked the other consumer line, in strict dependence the directional control pressure in the other consumer line.
- the control lines or pressure signals to unlock the load holding shut-off valves are additional usable to operate the idle circuit.
- the black and white directional seated valves are solenoid operated, which leads to a favorable response behavior
- the poppet valve design guarantees jam-free switching with relatively moderate magnetic forces.
- a pump or pump stage is useful for the maximum working pressure low flow rate, the workload is low because of the system works leak-free with very low idle pressure.
- the idle pressure is very easily determined by the spring, the force of which is just it is sufficient to close the 2/2 idle directional seat valve when the system is depressurized hold.
- the hydraulic actuation needs to be in the zero position not to be relieved via one of the black / white directional seat valves for the return, because the shuttle valve chain thanks to its connection to the return line worries.
- the combination of a control valve is favorable in terms of production and assembly technology with an idle block.
- the blocks can be combined with other blocks as required if several hydraulic motors are to be connected to the same pressure source. The result is a compact design.
- Another idle block for one can be used instead of the end plate
- Another hydraulic motor can be connected so that the control line connection is expanded and each additional hydraulic motor has the same 2/2 idle directional seat valve uses (modular principle).
- Screw-in valves are expediently provided, which can be produced cost-effectively, are easily interchangeable and reliable, and contribute to the compactness of the blocks.
- the hydraulic control device is particularly useful in a portable Integrated device that not only for weight and space reasons, but also in With regard to the energy requirement of a pump or pump stage with a small delivery rate with which the maximum working pressure is reached and maintained while the idle pressure remains as low as possible.
- Fig. 1 are for directional control of a double-acting high-pressure hydraulic motor M a route control block 1 and an idle block 2 are provided, which are separate shown, but connected to each other or even in a common Housing can be arranged.
- the consumer lines are in the basic position A, B shut off in the load holding check valves LA, LB, being upstream the load holding check valve is connected to the return line R.
- the Line 8 is blocked at 7 leakage-free. If the directional seat valve WA by the Magnet 5 switched, then line 8 is connected to consumer line A, the load-holding shut-off valve LA automatically opens to the hydraulic motor M. In the Adjustment of the hydraulic motor M displaces pressure medium via the consumer line B, the load holding shut-off valve LB unlocked from the consumer line A and the Non-switched directional seat valve WB pushed into the return line R.
- the idle block 2 includes a pump line section P and a return line section R and in a connection 12 between them a 2/2 idle directional seat valve V with hydraulic actuation E.
- the directional seat valve V contains one Valve seat 14 and on the return side a closing member 15, preferably a ball.
- the closing member 15 is acted upon in the return line section R by a piston 16, which can be moved in a sealed manner in a chamber 18 without leakage.
- the piston 16 is in the closing direction of the closing member 15 by a weak spring 17 and burdened by the higher load pressure of one of the control lines 9A, 9B, X, Y, via at least one shuttle valve CB, CA in idle block 2.
- the directional seat valve V and the shuttle valves CB, CA are expediently screw-in valves.
- Two shuttle valves CB, CA are included in series in a channel 13, which via a End plate 3 and a short-circuit channel 24 connected to the return line section R. is and opens into the chamber 18.
- a shuttle valve CB would also be sufficient to Chamber 18 to supply the higher pressure from a consumer line.
- the shuttle valve CB has a valve body 19 with a central connection 20 and is two side connections 21 and 22 on each side connection 21 or 22 by means of a closing member 23 and two valve seats alternately with the center connection 20 connectable.
- the second shuttle valve CA is approximately identical in construction and has a center connection 20 'and two side connections 21', 22 and a closing member 23 '.
- the control line X is connected to the side connection 21 of the shuttle valve CB.
- a section 13a of the channel 13 connects the chamber 18 to the central connection 20.
- the side port 22 is via a channel portion 13b with the Center port 20 'of the next shuttle valve CA connected, one side port 21 'to the control line Y and its other side connection 22' via the Section 13c is connected to the short-circuit channel 24.
- the directional seat valve WA If the directional seat valve WA is actuated, then builds up in the consumer line A. the directional seat valve WA and the load-holding shut-off valve LA pressure that over the control line 9A, Y moves the closing member 23 'upward and over the channel sections 13b, 13a in the chamber 18 takes effect. Because the exposure area of the piston 16 is advantageously larger than the cross-sectional area of the seat 14, the seat valve 15, 14 is moved into its shut-off position, so that the full pump line pressure or the entire delivery volume reaches consumer line A, there the load holding shut-off valve LA opens and the hydraulic motor M is acted upon.
- the directional control of a hydraulic motor which can only be acted upon on one side takes place via its only consumer line A.
- the load holding lock valve LA is a simple one Check valve in the consumer line A between one via the 2/2 black / white directional seat valve WA 'branch to the return R from the Consumer line A and the 3/2-way black / white directional seat valve WA.
- Fig. 4 is the control valve block schematically indicated, for example, in Figs. 1 and 2 1 shown in constructive design and in a longitudinal section.
- a housing 28 is made of hardened steel in a housing bore 29 Insert 30 included, which communicates on both sides via connecting channels 36, 37
- Insert 30 included, which communicates on both sides via connecting channels 36, 37
- Each valve seat has a closing member 33, 34, e.g. assigned a hardened and ground steel ball.
- the pump line P is on the right chamber in Fig. 4 connected to the closing member 33.
- the locking link 33 is pressed onto the valve seat 32 by the spring 6 and the pump line pressure (leak-free shut-off position).
- the force of the spring 6 will cause this Locking member 34 is lifted from its seat 31 so that the left chamber in FIG. 4 return line R connected to the closing member 34 via the connections 36, 37 is connected to section A 'of consumer line A, of which Section A 'branches off the control line 9A.
- the load holding lock valve LA is housed with its locking member 36 (a hardened, ground steel ball) with a Valve seat 35 of an insert also made of hardened steel interacts.
- the closing member 36 is by means of the control piston 11, which is in the chamber 10 can be acted upon by the valve seat 35 against the load pressure in the opening there Consumer line A can be lifted off, or by pump line pressure fed into section A '.
- valve WA In order to actuate the 3/2 black / white directional seat valve WA, the magnet 5 is excited, of the closing member 33 against the force of the spring 6 from an angle lever 35 Valve seat 32 lifts off and at the same time presses the closing member 34 against its seat 31. Then the connection of the pump line P via the passages 36, 37 to the section A 'and via the rising closing member 36 to the consumer line A manufactured.
- the 3/2 black / white directional seat valve WA can be in a common housing 28 be combined with the second 3/2 black / white directional seat valve WB (FIG. 5), such that both valves are connected to the pump line and the Lead control lines 9A (9B) to the respective load holding shut-off valves LA (LB) and then in their sections X, Y to the shuttle valves not shown in FIGS. 4 and 5 of Fig. 2 continue.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Description
- Fig. 1
- eine hydraulische Richtungs-Steuervorrichtung für einen doppelt beaufschlagbaren Hydromotor, teils im Schnitt, teils als Blockschaltbild,
- Fig. 2
- ein Blockschaltbild einer hydraulischen Richtungs-Steuervorrichtung für mehr als einen Hydromotor,
- Fig. 3
- ein Blockschaltbild einer Richtungs-Steuervorrichtung für einen einseitig beaufschlagbaren Hydromotor,
- Fig. 4
- einen Längsschnitt eines Steuerventilblocks, und
- Fig. 5
- eine Seitenansicht des Steuerventilblocks von Fig. 4.
Claims (14)
- Hydraulische Steuervorrichtung (S) zur Richtungssteuerung wenigstens eines Höchstdruck-Hydromotors (M, M') mit Arbeitsdrücken über ca. 450 Bar aus einer Druckquelle (27), dadurch gekennzeichnet, daß der Hydromotor (M, M') über wenigstens eine Verbraucherleitung (A, B) und zwei leckagefreie Schwarz/Weiß-Wegesitzventile (WA, WB, WA') wahlweise mit der Druckquelle (27) oder einem Rücklauf (R) verbindbar ist, daß in der Verbraucherleitung (A, B) ein Lasthalte-Sperrventil (LA, LB) in leckagefreier Sitzventilbauweise angeordnet ist, daß zwischen der Druckquelle (27) und dem Rücklauf (R) ein 2/2-Leerlauf-Wegesitzventil (V) mit hydraulischer Betätigung (E) vorgesehen ist, das in der Absperrstellung von der Druckquelle (27) zum Rücklauf (R) und in jeder Schaltstellung von der hydraulischen Betätigung (E) zum Rücklauf leckagefrei dicht ist, und daß die hydraulische Betätigung (E) des Leerlauf-Wegesitzventils zwischen dem Lasthalte-Sperrventil (LA, LB) und einem der Schwarz/Weiß-Wegesitzventile (WA, WB) über eine Steuerleitung (9A, 9B, X, Y) mit der Verbraucherleitung (A, B) verbunden ist.
- Hydraulische Steuervorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß für einen einseitig beaufschlagbaren Hydromotor zwischen der Verbraucherleitung (A) und der Druckquelle bzw. dem Rücklauf (R) ein 3/2-Schwarz/Weiß-Wegesitzventil (WA) und zwischen der Verbraucherleitung (A) und dem Rücklauf zusätzlich ein 2/2-Schwarz/Weiß-Wegesitzventil (WA') vorgesehen sind, daß das Lasthalte-Sperrventil (LA) als Rückschlagventil zwischen dem 3/2-Wegesitzventil (WA) und einer Abzweigung der Verbraucherleitung zum 2/2-Schwarz/Weiß-Wegesitzventil (WA') angeordnet ist, und daß die Steuerleitung (9A) zur hydraulischen Betätigung (E) des 2/2-Leerlauf-Wegesitzventils (V) an einen zwischen dem Lasthalte-Sperrventil (LA) und dem 3/2-Schwarz-Weiß-Wegesitzventil (WA) liegenden Abschnitt (A') der Verbraucherleitung (A) angeschlossen ist.
- Hydraulische Steuervorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß für einen doppelseitige beaufschlagbaren Hydromotor (M, M') zwischen jeder Verbraucherleitung (A, B) und der Druckquelle (27) bzw. dem Rücklauf (R) ein 3/2-Schwarz/Weiß-Wegesitzventil (WA, WB) vorgesehen ist, daß in jeder Verbraucherleitung (A, B) ein entsperrbares Lasthalte-Sperrventil (LA, LB) angeordnet ist, daß an jede Verbraucherleitung (A, B) in ihrem zwischen dem Lasthalte-Sperrventil (LA, LB) und dem 3/2-Schwarz/Weiß-Wegesitzventil (WA, WB) liegenden Abschnitt (A') eine Steuerleitung (9A, 9B) zur hydraulischen Betätigung (E) des 2/2-Leerlauf-Wegesitzventils (V) angeschlossen ist, und daß die beiden Steuerleitungen (9A, 9B) über wenigstens ein den jeweils höheren Lastdruck zur hydraulischen Betätigung (E) führendes Wechselventil (CA, CB) verknüpft sind.
- Hydraulische Steuervorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß die entsperrbaren Lasthalte-Sperrventile (LA, LB) hydraulisch und wechselweise durch Verbraucherdruck über die Steuerleitungen (9A, 9B) entsperrbar sind.
- Hydraulische Steuervorrichtung nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß parallel zum Hydromotor (M) wenigstens ein weiterer Hydromotor (M') über leckagefreie Wegesitzventile und wenigstens ein Lasthalte-Sperrventil (LA, LB) an die Druckquelle (27) bzw. den Rücklauf (R) angeschlossen sind, daß das 2/2-Leerlauf-Wegesitzventil (V) allen Hydromotoren (M, M') gemeinsam zugeordnet ist, und daß die Steuerleitungen (9A, 9B, 9A', 9B') der Hydromotoren (M, M') in einer Wechselventilkette (CA, CB, CA', CB') an die hydraulischen Betätigung (E) angeschlossen sind.
- Hydraulische Steuervorrichtung nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die 2/2- und 3/2-Schwarz/Weiß-Wegesitzventile (WA, WB) magnetbetätigt sind.
- Hydraulische Steuervorrichtung nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Druckquelle (27) eine Pumpe mit geringer Förderleistung oder eine mehrstufige Pumpenanordnung mit einer Pumpenstufe mit geringer Förderleistung, z.B. 1,0 l/mm, für einen maximalen Arbeitsdruck von rund 800 Bar aufweist.
- Hydraulische Steuervorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das 2/2-Leeriauf-Wegesitzventil (V) in Richtung auf seine Absperrstellung durch eine schwache, den Leerlaufdruck bestimmende Feder (17) beaufschlagt ist.
- Hydraulische Steuervorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das 2/2-Leerlauf-Wegesitzventil (V) einen Ventilsitz (4) und ein dem Ventilsitz (14) an der Rücklaufseite zugeordnetes und durch einen Kolben (16) in Schließrichtung beaufschlagtes Schließglied (15), vorzugsweise eine Kugel, aufweist, und daß der Kolben (16) vom Lastdruck als Ausgangsdruck eines Wechselventils (CB, CA) und parallel durch die Feder (17) belastet ist, wobei die Beaufschlagungsfläche des Kolbens (16) gleich oder größer ist als die Querschnittsfläche des Ventilsitzes (14).
- Hydraulische Steuervorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß der hydraulischen Betätigung (E) wenigstens zwei in Reihe geschaltete Wechselventile (CB; CA) mit je zwei Seitenanschlüssen (21, 22, 21', 22') und einem wechselweise mit einem Seitenanschluß verbindbaren Mittelanschluß (20, 20') zugeordnet sind, von denen jedes an einem Seitenanschluß (21, 21') mit einer Steuerleitung (9A, 9B, X, Y) verbunden ist, während der Mittelanschluß (20) des der hydraulischen Betätigung (E) nächsten Wechselventils (CB) mit der hydraulischen Betätigung (E), der andere Seitenanschluß (22) dieses Wechselventils (CB) mit dem Mittelanschluß (20') des weiteren Wechselventils (CA) und der verbleibende Seitenanschluß (22') des weiteren Wechselventils (CA) mit der Rücklaufleitung (R) verbunden ist.
- Hydraulische Steuervorrichtung nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Schwarz/Weiß-Wegesitzventile (WA, WB, WA') und die Lasthalte-Sperrventile (LA, LB) in einem Steuerventilblock (1, 1') angeordnet sind, und daß die Wechselventile (CA, CB) und das 2/2-Leerlauf-Wegesitzventil (V) in einem mit dem Steuerventilblock (1,1') verbundenen, je einen Pumpenleitungs- und einen Rücklaufleitungsabschnitt (P, R) enthaltenden Leerlaufblock (2, 2') angeordnet sind.
- Hydraulische Steuervorrichtung nach Anspruch 11, dadurch gekennzeichnet, daß im Leerlaufblock (2) ein vom verbleibenden Seitenanschluß (22') des weiteren Wechselventils (CA) zu einer Blockseite führender Stichkanal (13c) verläuft, daß an der Blockseite eine Endplatte (3) mit einem Kurzschlußkanal (24) zum Verbinden des Stichkanals (13c) mit dem Rücklaufleitungsabschnitt (R) angebracht ist, und daß anstelle der Endplatte (3) ein weiterer gleichartiger Leerlaufblock (2') mit in Serie geschalteten Wechselventilen (CB', CA') anbringbar ist, der den Stichkanal (13c) mit dem Mittelanschluß (2') des ersten weiteren Wechselventils (CB') verbindet.
- Hydraulische Steuervorrichtung nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das 2/2-Leerlauf-Wegesitzventil (V) und die Wechselventile (CA, CB) von außen in den Leerlaufblock (2) eingeschraubte Einschraubventile sind.
- Hydraulische Steuervorrichtung nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die hydraulische Steuervorrichtung (S) in einem transportablen, vorzugsweise tragbaren, Gerät mit integrierter Druckversorgung für einen maximalen Arbeitsdruck um etwa 800 Bar enthalten ist, wie einem Bahnschwellen-Schrauber, einem Drehmoment-Schrauber, einem Nietgerät oder dgl.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29810860U | 1998-06-17 | ||
DE29810860U DE29810860U1 (de) | 1998-06-17 | 1998-06-17 | Hydraulische Steuervorrichtung |
Publications (2)
Publication Number | Publication Date |
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EP0965763A1 true EP0965763A1 (de) | 1999-12-22 |
EP0965763B1 EP0965763B1 (de) | 2003-11-12 |
Family
ID=8058674
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Application Number | Title | Priority Date | Filing Date |
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EP99111358A Expired - Lifetime EP0965763B1 (de) | 1998-06-17 | 1999-06-10 | Hydraulische Steuervorrichtung |
Country Status (4)
Country | Link |
---|---|
US (1) | US6176261B1 (de) |
EP (1) | EP0965763B1 (de) |
JP (1) | JP2000018204A (de) |
DE (2) | DE29810860U1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1574720A1 (de) | 2004-03-10 | 2005-09-14 | HAWE Hydraulik GmbH & Co. KG | Elektrohydraulische Steuervorrichtung |
EP2241762A1 (de) * | 2009-04-15 | 2010-10-20 | HAWE Hydraulik SE | Steuervorrichtung |
EP2241764A1 (de) | 2009-04-17 | 2010-10-20 | HAWE Hydraulik SE | Sitzventil mit Umlaufventil- und Druckwaagefunktion |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29912784U1 (de) | 1999-07-22 | 1999-09-30 | Heilmeier & Weinlein Fabrik für Oel-Hydraulik GmbH & Co KG, 81673 München | Sitzventil |
DE10035902A1 (de) * | 2000-07-21 | 2002-01-31 | Mannesmann Rexroth Ag | Wegesitzventilanordnung |
US6871574B2 (en) * | 2003-05-28 | 2005-03-29 | Husco International, Inc. | Hydraulic control valve assembly having dual directional spool valves with pilot operated check valves |
US20100090143A1 (en) * | 2008-08-28 | 2010-04-15 | Kot Norbert J | Dual locking valve |
US9611871B2 (en) * | 2013-09-13 | 2017-04-04 | Norbert J. Kot | Pneumatic valve assembly and method |
JP2018071769A (ja) * | 2016-11-04 | 2018-05-10 | Kyb株式会社 | バルブブロック |
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- 1999-06-10 EP EP99111358A patent/EP0965763B1/de not_active Expired - Lifetime
- 1999-06-10 US US09/329,973 patent/US6176261B1/en not_active Expired - Lifetime
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1574720A1 (de) | 2004-03-10 | 2005-09-14 | HAWE Hydraulik GmbH & Co. KG | Elektrohydraulische Steuervorrichtung |
US7320335B2 (en) | 2004-03-10 | 2008-01-22 | Hawe Hydraulik Gmbh & Co. Kg | Electrohydraulic control device |
EP2241762A1 (de) * | 2009-04-15 | 2010-10-20 | HAWE Hydraulik SE | Steuervorrichtung |
EP2241764A1 (de) | 2009-04-17 | 2010-10-20 | HAWE Hydraulik SE | Sitzventil mit Umlaufventil- und Druckwaagefunktion |
Also Published As
Publication number | Publication date |
---|---|
EP0965763B1 (de) | 2003-11-12 |
DE59907687D1 (de) | 2003-12-18 |
JP2000018204A (ja) | 2000-01-18 |
US6176261B1 (en) | 2001-01-23 |
DE29810860U1 (de) | 1998-08-13 |
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