EP1729014A2 - Bloc de commande et section de bloc de commande - Google Patents

Bloc de commande et section de bloc de commande Download PDF

Info

Publication number
EP1729014A2
EP1729014A2 EP06009768A EP06009768A EP1729014A2 EP 1729014 A2 EP1729014 A2 EP 1729014A2 EP 06009768 A EP06009768 A EP 06009768A EP 06009768 A EP06009768 A EP 06009768A EP 1729014 A2 EP1729014 A2 EP 1729014A2
Authority
EP
European Patent Office
Prior art keywords
control
pressure
control block
chamber
control chamber
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
Application number
EP06009768A
Other languages
German (de)
English (en)
Other versions
EP1729014A3 (fr
EP1729014B1 (fr
Inventor
Niki Nieland
Armin Stellwagen
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.)
Bosch Rexroth AG
Original Assignee
Bosch Rexroth 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 Bosch Rexroth AG filed Critical Bosch Rexroth AG
Publication of EP1729014A2 publication Critical patent/EP1729014A2/fr
Publication of EP1729014A3 publication Critical patent/EP1729014A3/fr
Application granted granted Critical
Publication of EP1729014B1 publication Critical patent/EP1729014B1/fr
Anticipated expiration legal-status Critical
Not-in-force legal-status Critical Current

Links

Images

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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F15B13/08—Assemblies of units, each for the control of a single servomotor only
    • F15B13/0803—Modular units
    • F15B13/0878—Assembly of modular units
    • F15B13/0896—Assembly of modular units using different types or sizes of 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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool 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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F15B13/08—Assemblies of units, each for the control of a single servomotor only
    • F15B13/0803—Modular units
    • F15B13/0871—Channels for fluid

Definitions

  • the invention relates to a control block for supplying pressure medium to a plurality of consumers according to the preamble of patent claim 1 and a control block section suitable for such a control block.
  • control blocks are used to control hydraulic consumers of mobile machines.
  • a forklift can be controlled via such a control block, the steering, as well as hydraulic cylinder for raising or lowering the fork and tilting the fork-carrying mast.
  • the nominal size of the control block is designed as a function of the consumer with the greatest pressure medium requirement.
  • the pressure medium requirement of the hydraulic cylinder assembly for lifting the fork is much larger than the pressure medium demand of other consumers (steering, mast tilt), so that the nominal size of the control block is selected in response to the maximum pressure medium requirement and the smaller consumers associated control block sections are oversized. Since the costs of the hydraulic system are not insignificantly determined by the control block, it is endeavored to carry out this with possible small nominal size. A way out of this problem could be to design the nominal size of the control block as a function of the smaller consumers and then allocate two or more directional valve sections to compensate the larger consumer, because of the additional directional valve section the investment costs for such a solution too high.
  • the invention has for its object to provide a control block and a suitable control block for such a control block section, with the consumer with high pressure medium demand and consumers with relatively lower pressure medium requirement with low device complexity with pressure medium can be supplied.
  • the flow cross section from the directional control valve is doubled up to a common supply line to the connected consumer or consumers, so that the hydraulic resistance compared to the conventional solutions is substantially reduced and the valve section is suitable for larger flow rates than in the prior art.
  • a directional control valve via which two control chambers connected to a working connection can be connected either to a pressure connection or to a tank connection, is per se already out of the JP 2093104
  • this valve has only a single working port and moreover, it is not executed as part of a control block section. Through this single working port of the directional control valve, the pressure loss at high flow rate is large, so that a larger nominal size must be used.
  • control block section for such a control block is designed with a continuously adjustable directional valve, the valve slide has piston collars, via the control edges, the connection between the two working ports and the pressure medium source or the pressure medium sink is adjustable.
  • This construction makes it possible to make the directional valve with a small axial length and thus extremely compact, so that integration into conventional control blocks can be carried out in a simple manner.
  • the controlled via the control block consumer can have a pressure chamber or two pressure chambers, in which case each of the pressure chambers is assigned its own control block section according to the invention.
  • the control block can be designed as an LS or LUDV control block.
  • the piston collar of the valve slide is completely covered by the housing web in the central position.
  • This piston collar has a control edge, via which the connection between a control port associated with a working port and a pressure control chamber associated with the pressure port is adjustable.
  • a second piston collar is in one embodiment with two control edges designed to adjust the connection between a further work control chamber and connected to a tank port tank control chamber or the pressure control chamber and the other working control chamber.
  • the third piston collar is also provided in this embodiment with a control edge to adjust the connection between the first working control chamber and a second tank control chamber.
  • a second piston collar is designed with a control edge over which the connection between the further working control chamber and the pressure control chamber is adjusted.
  • the third piston collar is designed with a control edge for adjusting the connection between the latter working control chamber and a further control chamber.
  • valve spool is designed with three adjacent to said piston collars piston necks.
  • the directional control valve has an LS control chamber, which can be acted upon by a passage passing through the valve spool with the load pressure in one of the working control chambers.
  • This channel opens in a preferred embodiment, on the one hand in a in a working control chamber (54, 58) movable piston collar section.
  • valve spool In an LS or LUDV control block section, it is preferred if the valve spool is designed with an LS control edge, via which one to the LS control chamber adjacent LS communication chamber in the middle position or in displacement of the valve spool in one direction with an adjacent tank control chamber is connectable.
  • FIG. 1 shows a greatly simplified circuit diagram of an LS control block 1 of a fork-lift truck.
  • the basic structure of such a mobile control block 1 is known from the aforementioned data sheets RD 74 278 / 05.03 and RD 64 282 / 10.99, so that only the essential components for understanding the invention will be discussed.
  • Such an LS control block 1 has a pressure port P, a tank port T, a LS port LS and not shown control oil ports and external LS ports.
  • the tank connection T is via a tank line 2 with a tank T and the pump connection P is connected via a pump line 4 to the pressure port of a pump in the present case a variable displacement pump 6, the pump pressure is adjusted via a pump regulator 8 in response to the highest load pressure of the driven consumers so that it is always a predetermined ⁇ p above the highest load pressure.
  • This highest load pressure is picked up at the LS connection and routed to the pump regulator 8.
  • this highest load pressure is tapped via a shuttle valve cascade, not shown, from the actuated consumers and is applied to the LS connection.
  • the designed in disc design control block 1 consists essentially of an input element 10, on which the terminals P, T, LS and the other terminals (external LS terminals) are formed and a plurality of control block sections 12, 14, N and an end member 16th on which, for example, the control oil supply (stroke the front), pressure protection elements, filters and connections for supplying other control blocks with control oil (all connections not shown) may be formed.
  • Each of the directional valve or control block sections 12, 14, ... N is associated with a consumer of the forklift.
  • the section 12 is two parallel plunger cylinders 18, 20 for lifting a fork of the forklift and the section 14, for example, a tilting device 22, consisting of two parallel-connected differential cylinder for a fork-carrying mast of the forklift assigned.
  • Other sections may for example be associated with the hydraulic steering of the forklift or optional consumers.
  • the plunger cylinders 18, 20 have a higher pressure medium requirement than the other consumers (Steering, tilting device), for example, the pressure medium flow rate to the plunger cylinders is 180 1 / min, while the other consumers only need to be supplied with a lower pressure medium flow rate, for example, 50 1 / min.
  • the control section 12 described in more detail below is designed so that with a comparatively small nominal size of the control block, a sufficient supply of the plunger cylinders 18, 20 is ensured.
  • Each of the sections 12, 14, N for controlling a consumer consists in an LS control block essentially of a proportionally adjustable directional control valve 24, the pilot valves (pressure reducing valves), not shown, are assigned to control the position of a valve spool of the directional control valve 24.
  • the pressure medium volume flow over the controlled on an adjustment of the valve spool of the directional valves inlet orifice plates is kept constant independent of load at LS control blocks 1 via an upstream individual pressure compensator 26.
  • a pressure compensator piston is acted upon by a pressure compensator spring 28 and the load pressure on the associated consumer in the opening direction and by the pressure in front of the metering orifice in the closing direction.
  • the individual pressure compensator 26 is located in an inlet channel 30, which is connected on the one hand to the pressure port P to the input element 10 and on the other hand to an input port P of the directional control valve.
  • a tank connection T of the directional control valve 24 is connected via a discharge channel 32 to the tank connection T of the input element 10.
  • the directional control valve 24 of the section 12 further has two working ports A, B, which are connected via a first flow channel 34 and a second flow channel 36 with the two working ports A, B of the section 12. These two working ports A, B are connected via a branching flow line 38 with the two cylinder chambers 40, 42 of the plunger cylinder 18, 20.
  • control block section 12 the pressure medium supply of the two plungers 18, 20 connected in parallel takes place via the summed pressure medium volume flows conducted via the working ports A, B of the section, the pressure medium volume flows being brought together outside the section 12.
  • control block section 12 are further hydraulic components, such as pressure relief valves with combined feed function, shuttle valves for tapping the highest load pressure, LS-pressure relief valves, the aforementioned pressure reducing valves for controlling the directional control valve 24, etc. arranged. Since these hydraulic devices contribute nothing to the understanding of the invention, their description and illustration can be dispensed with.
  • the four ports P, T, A, B are shut off (closed center) in its spring-biased (centering spring not shown) middle position.
  • the valve spool in the illustration of Figure 1 can be moved downwards (position a), so that the pressure port P of the directional control valve 24 is connected to the two working or output ports A, B and the variable displacement of the sixth promoted pressure medium flow over the individual pressure compensator 28, the open-ended directional control valve 24 and the two working ports A, B of the section 12 to the cylinder chambers 40, 42 of the plunger cylinder 18, 20 flows to extend this and lift the fork of the forklift accordingly.
  • valve spool About the valve spool are doing practically two parallel flow cross-sections, each with a Zulaufmessblende 44, 46 controlled, so that the pressure medium in two substantially equal partial volume flows through the two parallel flow channels 34, 36 to the associated consumer (plunger cylinder 18, 20) flows. Due to this doubling of the flow cross section from the metering orifices 44, 46 to the merging of the supply line 38, the hydraulic resistance of the section 12 can be minimized, so that a control block of comparatively small size can be used, which with regard to the smaller consumers (tilting device 22, optional Consumer) is optimized.
  • both working ports A, B of the section 12 can be connected depending on the position of the directional control valve 24 with the pressure medium source or the pressure medium sinks by the directional control valve arrangement according to the invention, so that each parallel partial flows are conveyed in the direction of the plunger cylinders 18, 20 or run from them.
  • valve spool 48 which is guided in a valve bore 50 of the disk-block-executed control block section 12.
  • the valve bore 50 is in the illustration of Figure 2 from left to right to a tank control chamber 52 connected to the tank connection T (the connection designations below relate to the directional control valve 24), a work control chamber 54 connected to the working connection B, a pressure control chamber 56 connected to the pressure connection P, a further work control chamber 58, a further tank control chamber 60 , and a connected to a LS connection LS control chamber 62 extended.
  • LS connection LS control chamber 62 On both sides of the LS control chamber 62, two LS connection chambers 64, 66 are formed.
  • Such a constructed valve bore 50 is also used in the aforementioned prior art according to the data sheet RD 64 278 and RD 64 282.
  • the guided within the valve bore valve slide 48 has two end-side end collars 68, 70, between which a central piston collar 72, a second piston collar 74 and a left of the piston collar 72 arranged third piston collar 76 is formed, the piston collars on four piston necks 78, 80, 82, 84 are spaced from each other.
  • the second piston collar 74 has a substantially greater axial length than the two spaced from the piston neck 80 piston collars 76, 72.
  • annular groove 86 is formed over the in the illustrated center position of the valve spool 48, the LS control chamber 62 is connected to the two adjacent LS communication chambers 64, 66.
  • the central piston collar 72 is covered in the middle position shown by a housing web 88 between the working control chamber 58 and the pressure control chamber 56, so that the pressure control chamber 56 can be performed with a relatively small axial length and thus the directional control valve 24 is relatively short.
  • the valve slide 48 is penetrated by a channel, of which only the mouth regions 90, 92 are visible in FIG.
  • the channel opens in the Center position of the directional control valve 24 on the one hand in the LS control chamber 62 and on the other hand in the piston collar 74 portion of a housing web 94 between the working control chamber 58 and the pressure control chamber 56.
  • the channel mouth 90 arranged there is thus covered by the housing web 94 in the middle position.
  • two control edges 96, 98 are formed at the annular end faces of the second piston collar 74 .
  • Two further control edges 98, 100 are formed on the two mutually facing end surfaces of the two piston collars 72, 76 and on the right in Figure 2 end face of Stirnbunds 70 a fourth control edge 102 is formed, in the middle position, the pressure medium connection between the adjacent tank control chamber 60 and the LS connection chamber 64 is opened.
  • the ports A, B, P and T of the directional control valve are shut off in the middle position by the aforementioned control edges 96, 98, 100.
  • the control edges are each designed with fine control notches.
  • the directional control valve 24 is adjusted in two positions a, b, wherein in the upper position (a) the two working connections A, B of the directional control valve 24 with its pressure connection P and in the lower position (b) the two working connections A, B are connected to the tank or drain port T of the directional control valve 24.
  • valve slide 48 is displaced from the middle position shown in FIG. 2 to the right. This is done in which a limited by the end collar 70 control chamber 104 is acted upon by the pilot valves (pressure reducing valves), not shown, with a control pressure, so that the valve spool 48 by acting on the end face of the end collar 70 control pressure against the force of also not shown Zentrierfederanssen is moved.
  • pilot valves pressure reducing valves
  • a position (b) of the directional control valve 24 is shown, in which the pressure fluid flows from the plunger cylinder 18, 20 to the tank T out.
  • the valve spool 48 is moved from the middle position shown in Figure 2 to the left, in which via the pilot control a limited by the right end collar 68 control chamber 106 is subjected to a control pressure.
  • the channel opens via the channel mouth 92 in the LS connection chamber 66, which is connected via the annular groove 86 with the LS control chamber 62.
  • the right in Figure 3 holes of the channel mouth 90 is covered by the housing web 94.
  • the LS control chamber 62 may be connected in the illustrated position via the control edge 102 of the left end collar 70 and the LS connection chamber 64 with the tank control chamber 60 of the directional control valve 24, so that in the LS control chamber 62 of the section 12 the tank pressure is applied.
  • FIG. 4 shows an exemplary embodiment with a modified valve slide 48.
  • the structure of the valve bore 50 is substantially the same as in the above-described embodiment, so that corresponding components are provided with the same reference numerals and a repeated description to avoid repetition is omitted.
  • the two control edges 99, 100 are formed on a single, comparatively long central piston collar 108.
  • the control edge 98 is formed on a comparatively short further piston collar 110 and the control edge 96 is formed in this embodiment on the right Stirnbund 68, which is designed with a larger axial length than in the above-described embodiment.
  • the short piston collar 110 is substantially covered by a housing web 111 between the pressure control chamber 56 and the working control chamber 54.
  • the other Stirnbund 70 (left in Figure 4) has the same structure as in the above embodiment.
  • the channel for tapping 4 of the load pressure opens in the embodiment shown in Figure 4 with its channel mouth 90 in the large central piston collar 108, the other channel mouth 92 in turn opens in the region of the annular groove 86.
  • the ports A, P, B, T of the directional control valve are shut off , the LS control chamber 62 is connected to the tank control chamber 60 via the annular groove 86 and the control edge 102.
  • the plunger 48 is moved to extend the plunger cylinder 18, 20 by applying the right control chamber 106 with a control pressure from the center position shown in Figure 4 to the left position (a), so that the comparatively short further piston collar 110 completely in the pressure control chamber 56 is received, whose axial length is greater than that of the other piston collar 110. That is, via the control edge 98, the pressure medium connection of the pressure control chamber 56 to the working control chamber 54 and the control edge 99 of the piston collar 108, the pressure control chamber 56 is opened with the other working control chamber 58 and correspondingly opened the two inlet orifices 44, 46 at the axial displacement of the valve spool 48.
  • the end collar 70 could also be designed such that in the positions of the directional valve spool 24 into which the pressure medium from the plunger cylinders 18, 20 runs, the LS control chamber 62 is connected to the tank.
  • the pressure medium flows from the two cylinder chambers 40, 42 of the plunger cylinders 18, 20 to the tank T of the hydraulic system, the pressure medium volume flow being determined by the opened discharge cross sections, in which in FIGS 5 illustrated embodiment, only three piston necks 78, 112 and 114 are required, so that the production of the embodiment shown in Figure 4 is somewhat simpler than the embodiment described above.
  • suitable LS channels or grooves, bores would have to be provided in order to be able to be connected to the tank connection T in the middle position and, if necessary, in the drainage position (working connections A, B of the directional control valve). to connect the LS control chamber 62 or at least the LS communication chamber 64 to the tank T.
  • a single-acting consumer (plunger cylinder 18, 20) is controlled via the control block section 12.
  • the control of double-acting consumer is possible, in which case each pressure chamber of the consumer is assigned a control block section 12 with the above-described structure.
  • control block for supplying pressure medium to at least one consumer with a large pressure medium requirement and at least one smaller consumer and a control block section suitable for such a control block, via which the larger consumer can be supplied with pressure medium.
  • This control block section has two working ports, both of which are connectable to the pressure space, so that pressure fluid flows through two parallel pressure fluid flow paths toward the consumer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
EP06009768.0A 2005-06-02 2006-05-11 Bloc de commande et section de bloc de commande Not-in-force EP1729014B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200510025441 DE102005025441A1 (de) 2005-06-02 2005-06-02 Steuerblock und Steuerblocksektion

Publications (3)

Publication Number Publication Date
EP1729014A2 true EP1729014A2 (fr) 2006-12-06
EP1729014A3 EP1729014A3 (fr) 2008-03-12
EP1729014B1 EP1729014B1 (fr) 2013-11-06

Family

ID=36956100

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06009768.0A Not-in-force EP1729014B1 (fr) 2005-06-02 2006-05-11 Bloc de commande et section de bloc de commande

Country Status (2)

Country Link
EP (1) EP1729014B1 (fr)
DE (1) DE102005025441A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2243964A3 (fr) * 2009-04-24 2014-04-09 Nordhydraulic AB Vanne de contrôle
EP2770216A1 (fr) * 2013-02-20 2014-08-27 FESTO AG & Co. KG Agencement de vannes
WO2017017650A1 (fr) * 2015-07-30 2017-02-02 Metal Work S.P.A. Système d'électrovanne à débit accru

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0293104A (ja) 1988-09-29 1990-04-03 Kayaba Ind Co Ltd 三方向サーボ弁

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4400760C2 (de) * 1994-01-13 1997-03-27 Festo Kg Mehrwegeventil
SE513115C2 (sv) * 1998-11-12 2000-07-10 Mecman Ab Rexroth Ventilrampanordning
IT1307645B1 (it) * 1999-01-27 2001-11-14 Metal Work Spa Sistema di valvole a portata differenziata e componibili in batteria
DE10213397B4 (de) * 2002-03-26 2005-04-14 Festo Ag & Co. Ventilanordnung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0293104A (ja) 1988-09-29 1990-04-03 Kayaba Ind Co Ltd 三方向サーボ弁

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2243964A3 (fr) * 2009-04-24 2014-04-09 Nordhydraulic AB Vanne de contrôle
EP2770216A1 (fr) * 2013-02-20 2014-08-27 FESTO AG & Co. KG Agencement de vannes
WO2017017650A1 (fr) * 2015-07-30 2017-02-02 Metal Work S.P.A. Système d'électrovanne à débit accru
DE212016000109U1 (de) 2015-07-30 2018-01-15 Metal Work S.P.A. Magnetventilsystem mit erhöhter Durchflussrate
US10400908B2 (en) 2015-07-30 2019-09-03 Metal Work S.P.A. Solenoid valve system with an increased flow rate

Also Published As

Publication number Publication date
DE102005025441A1 (de) 2006-12-14
EP1729014A3 (fr) 2008-03-12
EP1729014B1 (fr) 2013-11-06

Similar Documents

Publication Publication Date Title
EP1915538B1 (fr) Montage pour commander un cylindre d'entrainement hydraulique a double effet
EP2220379B1 (fr) Ensemble distributeur hydraulique
EP2153072B1 (fr) Agencement de soupape avec un manometre a piston individuel et une soupape de frein d'abaissement
EP2220381A1 (fr) Mécanisme hydraulique à soupape
DE102006060334A1 (de) Hydraulische Ventilanordnung
DE19831595B4 (de) Hydraulische Schaltung
DE102004025322A1 (de) Hydraulische Ventilanordnung
EP2891805A2 (fr) Système de commande et soupape de commande pour un tel système de commande
EP1711715B1 (fr) Systeme diaphragme de mesure d'un appareil hydraulique de division et d'addition de debit
DE3611244A1 (de) Stromregelventil
EP1629207B1 (fr) Ensemble commande hydraulique
EP1729014B1 (fr) Bloc de commande et section de bloc de commande
EP1623123B1 (fr) Dispositif de commande hydraulique
EP1643138B1 (fr) Commande hydraulique
DE2906670A1 (de) Ventileinrichtung zur lastkompensierten steuerung eines hydraulischen verbrauchers
EP1736671B1 (fr) Système de commande à détection de charge et valve directionnelle à détection de charge
DE10119276B4 (de) Hydraulischer Steuerkreis
DE3029485A1 (de) Hydraulisches wegeventil zur lastunabhaengigen steuerung eines hydromotors
EP0624732B1 (fr) Dispositif de commande hydraulique
EP1452744B1 (fr) Dispositif de contrôle hydraulique
EP1481167B1 (fr) Dispositif a soupapes
DE3139635A1 (de) Hydraulische steuereinrichtung mit mindestens zwei wegeventilen zur steuerung hydraulischer verbraucher
DE102012014359A1 (de) Ventilvorrichtung und Ventilanordnung bestehend aus dahingehenden Ventilvorrichtungen
DE102006060327B3 (de) Hydraulische Ventilanordnung
EP0877169A2 (fr) Dispositif de commande hydraulique indépendante de la pression de charge d'un moteur à double effet

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

RIC1 Information provided on ipc code assigned before grant

Ipc: F15B 13/08 20060101ALI20080207BHEP

Ipc: F15B 13/04 20060101AFI20080207BHEP

17P Request for examination filed

Effective date: 20080912

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

17Q First examination report despatched

Effective date: 20090625

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20130529

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 639693

Country of ref document: AT

Kind code of ref document: T

Effective date: 20131215

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502006013321

Country of ref document: DE

Effective date: 20140102

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20131106

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140306

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131106

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131106

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131106

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131106

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131106

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131106

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140306

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131106

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502006013321

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131106

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131106

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131106

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131106

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131106

26N No opposition filed

Effective date: 20140807

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502006013321

Country of ref document: DE

Effective date: 20140807

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140511

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20140511

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140531

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131106

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140531

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131106

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20150130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140511

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140511

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140602

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 639693

Country of ref document: AT

Kind code of ref document: T

Effective date: 20140511

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140511

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131106

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140207

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131106

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20060511

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140531

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131106

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20180725

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20190521

Year of fee payment: 14

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502006013321

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20191203

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200511