[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

EP3599383B1 - Steuerungsvorrichtung für aktuator - Google Patents

Steuerungsvorrichtung für aktuator Download PDF

Info

Publication number
EP3599383B1
EP3599383B1 EP19186852.0A EP19186852A EP3599383B1 EP 3599383 B1 EP3599383 B1 EP 3599383B1 EP 19186852 A EP19186852 A EP 19186852A EP 3599383 B1 EP3599383 B1 EP 3599383B1
Authority
EP
European Patent Office
Prior art keywords
line
valve
vibration
valve means
hydraulic
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.)
Active
Application number
EP19186852.0A
Other languages
English (en)
French (fr)
Other versions
EP3599383A1 (de
Inventor
Christian Storci
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.)
Atlantic Fluid Tech SRL
Original Assignee
Atlantic Fluid Tech SRL
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 Atlantic Fluid Tech SRL filed Critical Atlantic Fluid Tech SRL
Publication of EP3599383A1 publication Critical patent/EP3599383A1/de
Application granted granted Critical
Publication of EP3599383B1 publication Critical patent/EP3599383B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/003—Systems with 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
    • 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
    • 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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/008—Reduction of noise or vibration
    • 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
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3105—Neutral or centre positions
    • F15B2211/3111—Neutral or centre positions the pump port being closed in the centre position, e.g. so-called closed centre
    • 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
    • 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
    • F15B2211/329—Directional control characterised by the type of actuation actuated by fluid pressure
    • 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
    • F15B2211/355—Pilot pressure control
    • 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
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50536—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using unloading valves controlling the supply pressure by diverting fluid to 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
    • F15B2211/50—Pressure control
    • F15B2211/575—Pilot pressure control
    • F15B2211/5756—Pilot pressure control for opening a 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
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/86—Control during or prevention of abnormal conditions
    • F15B2211/8613—Control during or prevention of abnormal conditions the abnormal condition being oscillations

Definitions

  • the invention relates to a device for controlling a hydraulic actuator, in particular a linear hydraulic actuator.
  • the invention can be applied to control a hydraulic actuator of a earth-moving machine (for example an excavator) and/or a load-lifting machine.
  • a hydraulic actuator of a earth-moving machine for example an excavator
  • a load-lifting machine for example an excavator
  • the prior art comprises the patent publication EP 3228580 A1 which shows a device for controlling the descent of a load carried by a hydraulic cylinder of a load-lifting apparatus.
  • Patent publication GB 2514112 A shows a control valve with an inlet and outlet of the hydraulic fluid and a pilot duct connected to the inlet by means of a check valve which allows the flow only in the direction going from the pilot duct to the inlet.
  • Patent publication JP 4890147 B2 shows a device for controlling the descent of a load comprising a check valve arranged between a hydraulic actuator and a pipe at risk of breakage, a pilot pipe for piloting the check valve, a valve for controlling the pressure of the pilot pipe and a check valve arranged to prevent the transmission of pressure from the pipe at risk of breakage to the pressure control valve.
  • Patent publication JP 2014206245 A shows a device which reduces the speed of descent of the load and which comprises a control valve configured so as to reduce its degree of opening when the pressure in a supply line of a hydraulic actuator is reduced.
  • Patent publication EP 3312436 A1 shows an anti-breakage tube device with a safety valve arranged between the pilot line and the main hydraulic line, in which such safety valve is closed in case of intact tube and opens automatically in case of tube breakage.
  • Patent publication US 4936032 A shows a device according to the preamble of claim 1.
  • One of the problems of known devices for controlling a hydraulic actuator, in particular in earth-moving machines and/or load-lifting machines, is represented by the undesired generation of vibrations in the device when the movable part of the actuator reaches the end of its stroke, generally when the operating arm of the machine is in the maximum extension configuration.
  • One object of the invention is to provide a control device able to remedy the aforementioned drawback of the prior art.
  • An advantage is to effectively avoid the generation of vibrations in the device when the mobile part of the actuator reaches the end of its stroke.
  • An advantage is to provide a control device which makes available a wide opening for the passage of the operating fluid in the phase of raising the load, in particular when the device controls a hydraulic actuator of a earth-moving machine and/or a load-lifting machine.
  • An advantage is to realize a device which is constructively simple and economical for controlling a hydraulic actuator.
  • a control device comprises a hydraulic line that connects a distributor of an operating fluid to a hydraulic actuator, a control valve arranged on the hydraulic line and provided with a first position in which it allows a supply flow of the operating fluid to the hydraulic actuator and a second position in which it allows a discharge flow towards the distributor, a pilot line of the control valve, an anti-vibration line that connects the pilot line with the hydraulic line, and a pressure valve arranged in the anti-vibration line and configured to open at a given pressure value corresponding to a situation in which the movable member of the hydraulic actuator reaches the end of its stroke, so as to avoid an undesired generation of vibrations.
  • the pressure valve located in the anti-vibration line is configured to open only if the operating fluid circuit is intact, in particular it does not open in the event of non-integrity of the flexible hose at risk of breakage.
  • the pressure valve is configured to open the anti-vibration line (which represents a sort of bypass line) when the pressure exceeds a certain value, without the risk of opening in the event of a tube rupture, solving the problem of generation of vibrations in the hydraulic system.
  • the control device 1 may be used, in particular, to control a linear hydraulic actuator C (for example a double-acting actuator, as in the illustrated examples).
  • the hydraulic actuator C may be, in particular, an actuator of a earth-moving machine (for example an excavator) and/or a load-lifting machine.
  • the hydraulic actuator C may be configured, in particular, to carry out a load descent by gravity.
  • the control device 1 comprises at least one pump P for supplying an operating fluid.
  • the supply pump P may comprise, in particular, a hydraulic pump (for example of a known type) suitable for feeding a hydraulic actuator of a earth-moving machine (excavator) and/or a load-lifting machine.
  • the control device 1 comprises at least one delivery line 2 connected to the (delivery of) the pump P.
  • the control device 1 comprises at least one distributor D of the operating fluid.
  • the distributor D is connected to the delivery line 2.
  • the distributor D may comprise, in particular, a distributor (for example of a known type) suitable for distributing the operating fluid in a hydraulic circuit that supplies power to a hydraulic actuator of an earth-moving machine (excavator) and/or a load-lifting machine.
  • the distributor D may comprise, in particular, a four-way and three-position distributor, although it is possible to provide for the use of other types of distributor.
  • the control device 1 comprises at least one discharge line 3 connected to the distributor D.
  • the discharge line 3 destined, as in these examples, to the connection with a discharge T of the operating fluid.
  • the control device 1 comprises at least one bypass line 4 arranged between the delivery line 2 and the discharge line 3.
  • the control device 1 comprises pressure control means 5 operating in the bypass line 4 and configured to open at a first pressure value P1 (for example P1 between 300 and 350 bar).
  • the pressure control means 5 may comprise, for example, at least one pressure relief valve.
  • the control device 1 comprises at least one hydraulic line 6 (main line) connected to the distributor D and intended for connection to the hydraulic actuator C.
  • the control device 1 comprises control valve means 7 arranged in the hydraulic line 6.
  • the control valve means 7 comprises a first position in which it allows a supply flow towards the hydraulic actuator C and at least a second position in which it allows a discharge flow towards the distributor D.
  • the control valve means 7 comprises at least a second position in which it prevents the flow of supply towards the hydraulic actuator C.
  • the control valve means 7 may comprise, in particular, at least one valve for controlling the descent of the load.
  • the hydraulic line 6 comprises a first portion 6a comprised between the control valve means 7 and the hydraulic actuator C.
  • the hydraulic line 6 comprises a second portion 6b included between the distributor D and the control valve means 7. At least a part of the second portion 6b of the hydraulic line 6 may comprise, in particular, a flexible tube (at risk of breakage).
  • the control device 1 may comprise, in particular as in the examples of Figures 1 , 3 , 4 , 5 and 6 , at least one check valve 8 arranged in parallel with respect to the control valve means 7 to allow a supply flow to the hydraulic actuator C and prevent a return flow to the distributor D.
  • the control device 1 comprises at least one pilot line 9 arranged to pilot the control valve means 7 and intended for connection with command means J configured to allow the control of the control device 1.
  • the command means J may comprise, in particular, at least one member (lever) operable by an operator and at least one peripheral device which transforms the movements of the aforesaid operating member into a series of electrical or electronic signals which enable the control device 1 to be controlled.
  • the command means J may be connected to a central control unit (for example a programmable electronic processor) which governs the operating machine on which the control device 1 is installed.
  • the command means J may comprise, in particular, a joystick (for example of a known type) usable in an earth-moving machine (excavator) and/or in a load-lifting machine.
  • the control device 1 comprises at least one safety line 10 which connects the pilot line 9 with the first portion 6a of the hydraulic line 6 comprised between the control valve means 7 and the hydraulic actuator C.
  • the control device 1 comprises safety valve means 11 arranged in the safety line 10 and configured to open at a second pressure value P2 higher than the first pressure value P1.
  • the second pressure value P2 may be, for example, between 360 and 420 bar.
  • the safety valve means 11 may comprise, for example, a pressure relief valve.
  • the control device 1 comprises at least one anti-vibration line 12 which connects the pilot line 9 with the hydraulic line 6, in particular with the second portion 6b of the hydraulic line 6 included between the control valve means 7 and the distributor D.
  • the control device 1 comprises anti-vibration valve means 13 arranged in the anti-vibration line 12 and configured to open at a third pressure value P3 lower than the first pressure value P1.
  • the third pressure value P3 may be, for example, between 240 and 300 bar.
  • the anti-vibration line 12 may comprise, in particular, a first line portion 12a arranged between the hydraulic line 6 and the anti-vibration valve means 13 and a second line portion 12b arranged between the anti-vibration valve means 13 and the pilot line 9.
  • the anti-vibration valve means 13 may comprise, in particular, at least one circuit element which comprises at least one pressure valve ( Figures 7 to 13 ) and/or at least one check valve ( Figure 7 ) and/or at least one pressure relief valve ( Figures 10 and 13 ) and/or at least one compensated pressure relief valve ( Figure 9 ) and/or at least one proportional two-way and two-position valve ( Figure 8 ) and/or at least one two-way and two-position proportional valve urged to close by elastic means ( Figure 8 ) and/or at least one two-way and two-position proportional valve associated in parallel with a pressure-limiting valve M ( Figure 11 ) and/or at least one pressure valve integrated in a selector valve ( Figure 12 ).
  • at least one circuit element which comprises at least one pressure valve ( Figures 7 to 13 ) and/or at least one check valve ( Figure 7 ) and/or at least one pressure relief valve ( Figures 10 and 13 ) and/or at least one compensated pressure relief valve ( Figure 9 ) and/or at
  • the anti-vibration valve means 13 comprises at least one pressure-limiting valve (such as that of Figure 13 ). It is possible to foresee that, in the examples of Figures 1 , 2 and 6 , in addition to, or in replacement of the pressure relief valve (such as that of Figure 13 ) arranged in the anti-vibration line 12, at least one of the circuit elements shown in Figures 7 to 12 is used.
  • the anti-vibration valve means 13 has been represented with a generic element (in the form of a box) which may be replaced, for example, by one or more of the elements of circuit represented in Figures 7 to 13 .
  • the anti-vibration valve means 13 may comprise, in particular, as in the example of Figure 5 , at least one three-way valve (similar to the valve of Figure 12 ) provided with at least one closing position in which the three-way valve closes a communication between the pilot line 9 and the first portion 12a of the anti-vibration line 12, leaving open a communication between the pilot line 9, the safety line 10 and the second portion 12b of the anti-vibration line 12.
  • the three-way valve may be provided with at least one opening position in which the three-way valve opens the communication between the pilot line 9 and the first portion 12a of the anti-vibration 12, leaving open the communication between the pilot line 9 and the safety line 10 and the second portion 12b of the anti-vibration line 12.
  • the aforementioned three-way valve may comprise, in particular, a valve configured to be normally in the closed position.
  • the three-way valve may comprise, as in these examples, elastic means arranged to urge the three-way valve in the closed position.
  • the aforementioned three-way valve essentially comprises a pressure valve (in particular, a pressure-limiting valve) and a selector valve (which may be substantially similar to the selector valve 16 which will be described below) integrated with each other in a single circuit element.
  • the control device 1 may comprise, in particular, throttling means 14 arranged in the pilot line 9 between the safety valve means 11 and the command means J of the control device 1.
  • the throttling means 14 may comprise, for example, an orifice, in particular an orifice with adjustable opening (for example with a grain).
  • the control device 1 may comprise, in particular, unidirectional flow means 15 arranged in parallel with respect to the throttling means 14 to prevent a flow towards the command means J of the control device 1.
  • the throttling means 14 may be arranged, as in the examples of Figures 1 , 2 , 3 , 5 and 6 , between the anti-vibration valve means 13 and the command means J of the control device 1.
  • the control device 1 may comprise, in particular, at least one selector valve 16 ( Figures 2 and 6 ) which may comprise at least one first position in which the selector valve 16 opens a communication between the pilot line 9 and the anti-vibration valve means 13 and closes a communication between the pilot line 9 and the safety valve means 11.
  • the selector valve 16 may comprise at least one second position in which the selector valve 16 closes the communication between the pilot line 9 and the anti-vibration valve means 13 and opens the communication between the pilot line 9 and the safety valve means 11.
  • the control device 1 may comprise, in particular, at least one drainage line 17 ( Figure 6 ) connected to the anti-vibration line 12.
  • the drainage line 17 may be connected to a portion of the anti-vibration line 12 included between the anti-vibration valve means 13 and the pilot line 9.
  • the drainage line 17 is intended for connection to a drain T.
  • the control device 1 may comprise, in particular, at least one speed reduction valve 18 arranged to control the flow in the drainage line 17.
  • the speed reduction valve 18 may be urged to open by elastic means.
  • the speed reduction valve 18 may be driven in closing by a pilot pressure present on the side of the anti-vibration valve means 13 arranged towards the control valve means 7.
  • the speed reduction valve 18 may comprise, for example, a proportional type valve.
  • the speed reduction valve 18 may comprise, in particular, a two-way and two-position valve.
  • the control device 1 may comprise, in particular, at least one control line 19 arranged to control the distributor D and intended for connection to the command means J of the control device 1.
  • the hydraulic line 20 indicates a hydraulic line (only partially represented) which connects the distributor D with the hydraulic actuator C.
  • the hydraulic lines 6 and 20 are, in particular, the lines connected to two separate chambers of the double-acting actuator.
  • the hydraulic line 6 may be connected to a first chamber of the hydraulic actuator C (for example a larger chamber or piston-side chamber) and the hydraulic line 20 may be connected to a second chamber of the hydraulic actuator C (for example a minor chamber or rod-side chamber).
  • the two chambers of the hydraulic actuator C may be opposite each other and/or separated by a piston.
  • the hydraulic line 20 may comprise, in particular, balancing means (for example of a known type, not shown), such as for example an overcenter valve.
  • the control device 1 may comprise, in particular as in the examples of Figures 3 , 5 and 6 , at least one valve unit G (schematized in the figures with a rectangle with dash and dot line) which integrates the following hydraulic circuit elements in a single block: at least a portion of the hydraulic line 6, the control valve means 7, at least a portion of the pilot line 9, the safety line 10, the safety valve means 11, the anti-vibration line 12 and the anti-vibration valve means 13.
  • the valve unit G also integrates the speed reduction valve 18.
  • the anti-vibration valve means 13 is arranged separated and not integrated with respect to the control valve means 7.
  • the control device 1 comprises anti-vibration means (for example the anti-vibration line 12 and the anti-vibration valve means 13) configured so as to open only when the movable member (piston) of the hydraulic actuator C is at the end of the stroke and when the circuit is intact, in particular when the flexible hose at risk of breakage is intact.
  • anti-vibration means for example the anti-vibration line 12 and the anti-vibration valve means 13
  • the aforementioned anti-vibration means is connected, as in these examples, to the hydraulic line 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)
  • Vehicle Body Suspensions (AREA)
  • Seal Device For Vehicle (AREA)

Claims (11)

  1. Steuervorrichtung (1) für ein hydraulischen Stellglied (C), welche aufweist:
    - eine Pumpe (P) zum Zuführen eines Arbeitsfluids,
    - eine Zufuhrleitung (2), die mit der Pumpe (P) verbunden ist,
    - einen Verteiler (D) für das Arbeitsfluid, der mit der Zufuhrleitung (2) verbunden ist,
    - eine Auslassleitung (3), die mit dem Verteiler (D) verbunden ist und die zur Verbindung mit einem Auslass (T) des Arbeitsfluids vorgesehen ist,
    - eine Überbrückungsleitung (4), die zwischen der Zufuhrleitung (2) und der Auslassleitung (3) angeordnet ist,
    - ein Drucksteuermittel (5), das in der Überbrückungsleitung (4) angeordnet ist und das so ausgestaltet ist, dass es sich bei einem ersten Druckwert (P1) öffnet, um einen Fluidstrom von der Zufuhrleitung (2) zu der Auslassleitung (3) zu ermöglichen,
    - eine Hydraulikleitung (6), die mit dem Verteiler (D) verbunden ist und die zur Verbindung mit einem hydraulischen Stellglied (C) bestimmt ist,
    - ein Steuerventilmittel (7), das in der Hydraulikleitung (6) angeordnet ist und das mindestens eine erste Stellung, in der es einen Zufluss von dem Verteiler (D) zu dem hydraulischen Stellglied (C) ermöglicht, und mindestens eine zweite Stellung aufweist, in der es einen Auslass von dem hydraulischen Stellglied (C) zu dem Verteiler (D) ermöglicht,
    - eine Steuerleitung (9), die zur Steuerung des Steuerventilmittels (7) angeordnet ist und die zur Verbindung mit einem Steuermittel (J) bestimmt ist,
    - eine Sicherheitsleitung (10), die die Steuerleitung (9) mit einem ersten Abschnitt (6a) der Hydraulikleitung (6) zwischen dem Steuerventilmittel (7) und dem hydraulischen Stellglied (C) verbindet,
    - ein Sicherheitsventilmittel (11), das in der Sicherheitsleitung (10) angeordnet ist, dadurch gekennzeichnet, dass
    - das Sicherheitsventilmittel (11) so ausgestaltet ist, dass es sich bei einem zweiten Druckwert (P2) öffnet, der höher als der erste Druckwert (P1) ist, um einen Fluidstrom von dem ersten Abschnitt (6a) der Hydraulikleitung (6) zu der Steuerleitung (9) zu ermöglichen,
    - die Steuervorrichtung (1) eine Antivibrationsleitung (12) aufweist, die die Steuerleitung (9) mit einem zweiten Abschnitt (6b) der Hydraulikleitung (6) zwischen dem Steuerventilmittel (7) und dem Verteiler (D) verbindet,
    - die Steuervorrichtung (1) ein Antivibrationsventilmittel (13) aufweist, das in der Antivibrationsleitung (12) angeordnet ist, wobei das Antivibrationsventilmittel (13) normalerweise geschlossen ist, um einen Fluidstrom in der Antivibrationsleitung (12) durch das Antivibrationsventilmittel (13) zu unterbrechen, und wobei das Antivibrationsventilmittel (13) so ausgestaltet ist, dass es sich bei einem dritten Druckwert (P3) öffnet, der niedriger als der erste Druckwert (P1) ist, um einen Fluidstrom von dem zweiten Abschnitt (6b) der Hydraulikleitung (6) zu der Steuerleitung (9) zu ermöglichen.
  2. Vorrichtung nach Anspruch 1, wobei das Antivibrationsventilmittel (13) mindestens ein Schaltungselement aufweist, das aus einer Gruppe ausgewählt worden ist, die ein Druckventil, ein Rückschlagventil, ein Druckbegrenzungsventil, ein kompensiertes Druckbegrenzungsventil, ein Zwei-Wege-Proportionalventil, ein Zwei-Wege-Proportionalventil, das durch ein elastisches Mittel in Schließstellung gehalten wird, und ein Zwei-Wege-Proportionalventil umfasst, das parallel zu einem Druckbegrenzungsventil angeordnet ist.
  3. Vorrichtung nach Anspruch 1, wobei das Antivibrationsventilmittel (13) ein Drei-Wege-Ventil mit mindestens einer Schließstellung aufweist, in der es eine Verbindung zwischen der Steuerleitung (9) und dem zweiten Abschnitt (6b) der Hydraulikleitung (6) durch die Antivibrationsleitung (12) schließt und in der es eine Verbindung zwischen der Steuerleitung (9) und der Sicherheitsleitung (10) offen lässt, und mit mindestens einer Öffnungsstellung, in der es die Verbindung zwischen der Steuerleitung (9) und dem zweiten Abschnitt (6b) der Hydraulikleitung (6) durch die Antivibrationsleitung (12) öffnet und in der es die Verbindung zwischen der Steuerleitung (9) und der Sicherheitsleitung (10) offen lässt, wobei sich das Drei-Wege-Ventil durch die Wirkung eines elastischen Mittels normalerweise in der Schließstellung befindet.
  4. Vorrichtung nach einem der vorhergehenden Ansprüche, welche eine Ventileinheit (G) aufweist, die in einem einzigen Block folgendes integriert: mindestens einen Abschnitt der Hydraulikleitung (6), das Steuerventilmittel (7), mindestens einen Abschnitt der Steuerleitung (9), die Sicherheitsleitung (10), das Sicherheitsventilmittel (11), die Antivibrationsleitung (12) und das Antivibrationsventilmittel (13).
  5. Vorrichtung nach einem der vorhergehenden Ansprüche, welche ein Drosselmittel (14) aufweist, das in der Steuerleitung (9) zwischen dem Sicherheitsventilmittel (11) und dem Befehlsmittel (J) der Steuervorrichtung (1) angeordnet ist, wobei ein Mittel zur unidirektionalen Strömung parallel zu dem Drosselmittel (14) angeordnet ist, um eine Strömung in Richtung auf das Steuermittel (J) zu verhindern.
  6. Vorrichtung nach Anspruch 5, wobei das Drosselmittel (14) zwischen dem Antivibrationsventilmittel (13) und dem Steuermittel (J) der Steuereinrichtung (1) angeordnet ist.
  7. Vorrichtung nach einem der vorhergehenden Ansprüche, welche ferner ein Wahlventil (16) mit drei Wegen und mit mindestens einer ersten Stellung, in der das Wahlventil eine Verbindung zwischen der Steuerleitung (9) und dem Antivibrationsventilmittel (13) öffnet und in der es eine Verbindung zwischen der Steuerleitung (9) und dem Sicherheitsventilmittel (11) schließt, und mit mindestens einer zweiten Stellung aufweist, in der das Wahlventil die Verbindung zwischen der Steuerleitung (9) und dem Antivibrationsventilmittel (13) schließt und in der es die Verbindung zwischen der Steuerleitung (9) und dem Sicherheitsventilmittel (11) öffnet.
  8. Vorrichtung nach einem der vorhergehenden Ansprüche, welche eine Auslassleitung (17) aufweist, die mit einem Abschnitt (12b) der Antivibrationsleitung (12) verbunden ist, die sich zwischen dem Antivibrationsventilmittel (13) und der Steuerleitung (9) befindet und die zur Verbindung mit einem Auslass (T) bestimmt ist, wobei ein Geschwindigkeitsreduktionsventil (18) so angeordnet ist, dass es den Durchfluss in der Auslassleitung (17) steuert.
  9. Vorrichtung nach Anspruch 8, wobei das Geschwindigkeitsreduktionsventil (18) beim Öffnen durch ein elastisches Mittel belastet wird und das beim Schließen durch einen Steuerdruck gesteuert wird, der auf einer Seite des Antivibrationsventilmittels (13) vorhanden ist, das in Richtung auf die Hydraulikleitung (6) angeordnet ist.
  10. Vorrichtung nach Anspruch 8 oder 9, wobei das Geschwindigkeitsreduktionsventil (18) ein Zwei-Wege-Ventil ist.
  11. Vorrichtung nach einem der vorhergehenden Ansprüche, welche eine Steuerleitung (19) aufweist, die zur Steuerung des Verteilers (D) angeordnet ist und die zur Verbindung mit dem Steuermittel (J) der Steuervorrichtung (1) bestimmt ist.
EP19186852.0A 2018-07-27 2019-07-17 Steuerungsvorrichtung für aktuator Active EP3599383B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102018000007591A IT201800007591A1 (it) 2018-07-27 2018-07-27 Dispositivo per Controllare un Attuatore

Publications (2)

Publication Number Publication Date
EP3599383A1 EP3599383A1 (de) 2020-01-29
EP3599383B1 true EP3599383B1 (de) 2023-05-31

Family

ID=63965825

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19186852.0A Active EP3599383B1 (de) 2018-07-27 2019-07-17 Steuerungsvorrichtung für aktuator

Country Status (3)

Country Link
EP (1) EP3599383B1 (de)
CN (1) CN110778560B (de)
IT (1) IT201800007591A1 (de)

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2627838B1 (fr) * 1988-02-25 1991-01-11 Bennes Marrel Valve de securite pour recepteur hydraulique et circuit hydraulique la comportant
JP4890147B2 (ja) 2006-08-04 2012-03-07 日立建機株式会社 油圧アクチュエータ回路の負荷保持装置
KR100915207B1 (ko) * 2007-10-16 2009-09-02 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 중장비용 유압회로
US9145660B2 (en) * 2012-08-31 2015-09-29 Caterpillar Inc. Hydraulic control system having over-pressure protection
JP2014206245A (ja) 2013-04-15 2014-10-30 コベルコ建機株式会社 油圧アクチュエータ回路の負荷保持装置
GB2514112C (en) 2013-05-13 2016-11-30 Caterpillar Inc Valve Arrangement
US10316495B2 (en) * 2014-06-18 2019-06-11 Cnh Industrial America Llc Safety hydraulic circuit
WO2016085959A1 (en) * 2014-11-24 2016-06-02 Parker-Hannifin Corporation System architectures for steering and work functions in a wheel loader
EP3104022B1 (de) * 2015-06-12 2019-12-04 National Oilwell Varco Norway AS Verbesserungen bei der regelung hydraulischer antriebe
DE102015221713A1 (de) * 2015-11-05 2017-05-11 Robert Bosch Gmbh Rohrbruchsicherung mit zwei hydraulischen Ansteuerungen
US10227998B2 (en) * 2015-12-31 2019-03-12 Cnh Industrial America Llc System for controlling the supply of hydraulic fluid to a work vehicle implement
ITUA20162376A1 (it) 2016-04-07 2017-10-07 Atlantic Fluid Tech S R L Dispositivo di controllo di un attuatore
IT201600106112A1 (it) * 2016-10-21 2018-04-21 Atlantic Fluid Tech S R L Dispositivo anti-rottura tubo

Also Published As

Publication number Publication date
EP3599383A1 (de) 2020-01-29
CN110778560B (zh) 2023-06-09
IT201800007591A1 (it) 2020-01-27
CN110778560A (zh) 2020-02-11

Similar Documents

Publication Publication Date Title
KR101887318B1 (ko) 작업 기계의 유압 구동 시스템
US8671824B2 (en) Hydraulic control system
US7752842B2 (en) Circuit for controlling a double-action hydraulic drive cylinder
JP5265078B2 (ja) 流量調整器を備えた油圧系統
US7553120B2 (en) Hydraulic control unit for the arms of a grip and grip including said hydraulic unit
US6241212B1 (en) Hose rupture control valve unit
US9790659B2 (en) Hydraulic shovel
US20060081121A1 (en) Hydraulic valve arrangement
US11078646B2 (en) Shovel and control valve for shovel
EP3859168B1 (de) Flüssigkeitskreislauf
US8752371B2 (en) Independent metering valve with flow limiter
EP2672022B1 (de) Hydraulischeflüssigkeitssteuerung für eine Arbeitsmaschine
EP2910796B1 (de) Anordnung mit einer Steuerventileinrichtung mit einer Schwimmstellung
EP3599383B1 (de) Steuerungsvorrichtung für aktuator
CN107217694B (zh) 挖土机
US20160017897A1 (en) Regenerative circuit of hydraulic apparatus
EP2964842A1 (de) Druckverlustreduktionsschaltung für eine baumaschine
JP2014148994A (ja) 作業機械の油圧制御装置
US20170108015A1 (en) Independent Metering Valves with Flow Sharing
EP1522740A1 (de) Dämpfungsventil für die hydraulische Steuerung hydraulischer Wegeventile
EP4428376A1 (de) Vorrichtung zur steuerung des senkens eines hydraulischen zylinders, insbesondere zur steuerung des senkens eines bedienungsarms
US11208787B2 (en) Hydraulic drive system for work machine
JP6381228B2 (ja) 油圧駆動装置
WO2023110145A1 (en) Hydraulic control system in working machine
KR20200037480A (ko) 건설기계의 제어 시스템

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

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

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

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

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20200729

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

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

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20221223

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

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

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602019029474

Country of ref document: DE

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1571087

Country of ref document: AT

Kind code of ref document: T

Effective date: 20230615

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230529

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20230531

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1571087

Country of ref document: AT

Kind code of ref document: T

Effective date: 20230531

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

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: 20230531

Ref country code: NO

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: 20230831

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: 20230531

Ref country code: AT

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: 20230531

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

Ref country code: TR

Payment date: 20230724

Year of fee payment: 5

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

Ref country code: RS

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: 20230531

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: 20230531

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: 20230531

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: 20230531

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: 20230531

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: 20230930

Ref country code: HR

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: 20230531

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: 20230901

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

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: 20230531

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

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: 20230531

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

Ref country code: SM

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: 20230531

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: 20230531

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: 20230531

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: 20231002

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: 20230531

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: 20230531

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: 20230531

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

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: 20230531

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

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: 20230531

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602019029474

Country of ref document: DE

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20230731

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 NON-PAYMENT OF DUE FEES

Effective date: 20230717

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 NON-PAYMENT OF DUE FEES

Effective date: 20230717

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

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: CH

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

Effective date: 20230731

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: 20230531

26N No opposition filed

Effective date: 20240301

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: 20230531

Ref country code: BE

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

Effective date: 20230731

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: 20230717

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: 20230717

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

Ref country code: DE

Payment date: 20240729

Year of fee payment: 6

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

Ref country code: GB

Payment date: 20240729

Year of fee payment: 6

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

Ref country code: FR

Payment date: 20240725

Year of fee payment: 6

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

Ref country code: IT

Payment date: 20240724

Year of fee payment: 6