EP2818732B1 - Procédé et commande pour le levage hydraulique d'une charge - Google Patents

Procédé et commande pour le levage hydraulique d'une charge Download PDF

Info

Publication number
EP2818732B1
EP2818732B1 EP13174340.3A EP13174340A EP2818732B1 EP 2818732 B1 EP2818732 B1 EP 2818732B1 EP 13174340 A EP13174340 A EP 13174340A EP 2818732 B1 EP2818732 B1 EP 2818732B1
Authority
EP
European Patent Office
Prior art keywords
connection
load
pressure signal
slider
valve
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
EP13174340.3A
Other languages
German (de)
English (en)
Other versions
EP2818732A1 (fr
Inventor
Thomas Wechsel
Martin Heusser
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.)
Hawe Hydraulik SE
Original Assignee
Hawe Hydraulik SE
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 Hawe Hydraulik SE filed Critical Hawe Hydraulik SE
Priority to EP13174340.3A priority Critical patent/EP2818732B1/fr
Publication of EP2818732A1 publication Critical patent/EP2818732A1/fr
Application granted granted Critical
Publication of EP2818732B1 publication Critical patent/EP2818732B1/fr
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
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
    • F15B11/165—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load for adjusting the pump output or bypass in response to demand
    • 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
    • F15B13/0416—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor with means or adapted for load sensing
    • 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
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20546—Type of pump variable capacity
    • 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
    • F15B2211/3053—In combination with a pressure compensating valve
    • F15B2211/30535—In combination with a pressure compensating valve the pressure compensating valve is arranged between pressure source and 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
    • F15B2211/3122—Special positions other than the pump port being connected to working ports or the working ports being connected 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/65—Methods of control of the load sensing pressure
    • F15B2211/653—Methods of control of the load sensing pressure the load sensing pressure being higher than the load 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
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/85—Control during special operating conditions
    • F15B2211/851—Control during special operating conditions during starting

Definitions

  • the invention relates to a method according to the preamble of claim 1 and a controller according to the preamble of claim. 7
  • variable displacement pump is usually placed far away from the load-moving hydraulic consumer, and relatively long paths for the hydraulic medium in the load pressure signal circuit are inevitable when initiating a lifting movement of the load from standstill when opening the second connection in the load pressure signal circuit from the hydraulic consumer to the control device of the variable , while the variable displacement pump is still operating in stand-by mode, first inevitably hydraulic fluid removed from the hydraulic consumer, so that the control device up-regulates the variable. This results in a significant sagging of the load due to the lack of a load-holding valve, even though the load should be only the empty tree grab or bucket, and not only complicates the precise operation of the device, but also increases the operational and injury hazards.
  • the invention has for its object to provide a method and a control of the type mentioned, which allow with negligible cost and construction overhead, the initiation of a lifting movement from a standstill without previous bagging movement of the load.
  • the third connection is opened in time leading to the first, only a mass flow to the hydraulic consumer initiating connection, the control device of the variable from the hitherto largely pressure-relieved load pressure signal circuit first subjected to the pressure generated in standby mode, whereby the variable displacement is immediately upshifted.
  • the pressure signal for the control device is steadily increasing, however, without removing hydraulic medium from the hydraulic consumer, up to a pressure level at least approximately corresponding to the load pressure in the hydraulic consumer.
  • the delivery pressure of the variable displacement pump overcomes the load pressure in the hydraulic consumer without slumping the load.
  • the pressure signal for the control device is sufficiently extended in time with advance to open the first connection, also the pressure generated in the standby mode of the variable can choose low low, for example, only sufficient for cooling by a small flow rate, which enables energy savings and minimizes mechanical stress on the hydraulic medium.
  • the third connection is provided either in the proportional directional valve so that it is opened in time leading to the first connection, and also leading the time to the second connection via which the load pressure from the hydraulic consumer to the control device leading part of the load pressure signal circuit is fed, so that no hydraulic fluid resulting from the sagging of the load is removed from the hydraulic consumer, but also the delivery pressure of the variable displacement pump is sufficiently high to overcome the load pressure in the hydraulic consumer and to control it from standstill in the lifting direction.
  • the method it is also expedient to close the third connection in time after opening the first connection, and to open the second connection before closing the third connection after or before or simultaneously with the opening of the first connection.
  • This ensures that the pressure signal for the adjusting device has already been sufficiently raised, so that no hydraulic medium is withdrawn from the hydraulic consumer via the load pressure signal circuit.
  • a mixed pressure may optionally be generated from the raised pressure signal for the adjusting device and the load pressure from the hydraulic consumer, so that the lifting movement is regulated relatively directly independent of load after the initiation.
  • the first, second and third connections in the proportional directional valve are opened and closed.
  • a fourth connection from the load pressure signal circuit to a tank, with which the load pressure signal circuit has been depressurized beforehand, is used to prematurely open the third connection in order not to waste any hydraulic medium in the pressure increase of the pressure signal for the control device.
  • the third connection comprises at least one control notch or control slot in the circumference of the piston slide of the proportional directional slide, which is strictly dependent on the linear Verstellhub the spool in a slide bore relative to a connected to the delivery side of the variable and a connected to the load pressure signal circuit upstream of the proportional directional spool connection in the slide bore is adjustable.
  • the control notch or the control slot and the connections represent only a negligible overhead in the production of the proportional directional spool.
  • the basic concept of proven proportional directional valves for such controls need not be fundamentally changed.
  • an embodiment of the control is expedient in which the third compound additionally at least one further control notch or another control slot on a from the axial position of the control notch or the control slot comprises different axial position of the spool, the or the dependent on the Verstellhub the spool from the neutral position in the lifting direction opens the third connection in an end portion of the stroke a second time and keeps open.
  • the pressure signal for the control device is raised again and further, as it would correspond to the instantaneous load pressure, so that the flow rate per unit time is practically stepped up and the hydraulic consumer performs a kind of rapid traverse.
  • the third connection in the separate valve preferably in a 2/2 solenoid valve, comprises connectable connections which are connected within the stroke of the piston valve in the lifting direction in an end portion of the adjustment stroke facing away from the neutral position, e.g. via a higher-level control to raise the pressure signal for the control device over the instantaneous load pressure in the hydraulic consumer and the amount of e.g. step up.
  • Fig. 1 shows a block diagram of a controller H, for example, in a forest crane or hydraulic excavator, not shown, for directional and speed control of a load L moving hydraulic consumer 1, for example, a double-acting hydraulic cylinder.
  • the hydraulic consumer 1 could also be acted on one side.
  • the controller H is designed so that it is to carry out a method with which a lifting movement of the load L from standstill without sagging of the hydraulic consumer 1 and the load L is executable.
  • Main components of the control H are in addition to the hydraulic consumer 1 a proportional directional spool 4, in particular a 4/3-proportional directional spool, possibly with not Pictured lever, preferably with proportional magnets and proportional pressure pilot controls, connected to a pressure line P variable 2 a control device 3, which is connected to an LS line of a load pressure signal circuit 6, a tank to which a tank line R leads, and optionally a feed regulator 5 (pressure compensator) in the pressure line P upstream of the proportional directional spool 4.
  • a proportional directional spool 4th is a piston slide 7 in a slide bore 8 linearly adjustable, with three basic positions I, II and III and various intermediate positions are adjustable.
  • Position I is a closed neutral position, are shut off in the working lines A, B to the hydraulic consumer 1 to the tank and the variable displacement pump 2, however, the load pressure signal circuit 6 is relieved of pressure to the tank line R.
  • Position II is a lowering position and position III is the maximum lifting position.
  • Fig. 2 illustrated as scale enlarged section of the block diagram of Fig. 1 an intermediate position in which according to the method, a pressure signal for the control device 2 is raised in order to regulate the promotion of the variable displacement pump 2.
  • connections 9, 10 are provided for the working lines A, B, as well as adjacent terminals 11, 12, to each of which the load pressure in the working lines A, B is transmitted, and adjacent to the terminal 11 on the side of the hydraulic consumer Terminal 13 for relieving the load pressure signal circuit 6 in the tank line R.
  • variable displacement pump 2 or pressure line P On the side of the variable displacement pump 2 or pressure line P side two ports 17 and 21 to the tank line R and the pressure line P are provided in the slide bore 8, between which a port 18 is located, which is also connected to the pressure line P.
  • ports 16 and 19 On both sides of the terminals 17 and 21 ports 16 and 19 are provided to the load pressure signal circuit 6, as even further outboard two terminals 14, 23 also to the load pressure signal circuit 6 and the opening side of the pressure compensator of the inlet regulator 5.
  • a short-circuit connection 15 is provided at the terminal 14, and in the position shown a connection 24, which connects the working line B to the tank line R.
  • Fig. 2 shown intermediate position also corresponds to the in Fig. 5 shown intermediate position of the proportional directional slide. 4
  • the Fig. 1 and 4 to 7 correspond to the positions ⁇ , 1, 2, 3 and 4 in the diagram of the Fig. 3 ,
  • Fig. 3 illustrates the control sequence when adjusting the spool 7 of the proportional directional spool 4 from the neutral position I in the lifting direction to position III.
  • opening and closing operations of different compounds and their opening sizes are shown in chronological order within the Verstellhubes the spool 7, as they are between the positions ⁇ , 1, 2, 3, 4 (corresponding to the Fig. 1 . 4, 5, 6 . 7 ) in carrying out the process.
  • an initially open fourth connection 14 ⁇ 13 is gradually closed before reaching the position 1, via which the load pressure signal circuit 6 to the tank line R was depressurized.
  • position 1 (corresponding to Fig. 4 ) no further connection is open.
  • position 1 is an option that could be eliminated.
  • a third connection 18 ⁇ 19 is opened in advance of time for opening a first connection 21 ⁇ 9, via which third, open connection 18 ⁇ 19 of the pending in the pressure line P, generated in stand-by operation of the variable displacement pump 2 Pressure over at least one control notch or a control slot 20 in the periphery of the spool 7 and the load pressure signal circuit 6 is transmitted to the control device 3 of the variable displacement pump 2.
  • This pressure signal causes a leading Hochregeln the promotion of the variable displacement pump 2, so that the pressure signal for the control device 3 is steadily raised, at least approximately up to the pressure level of the load pressure in the hydraulic consumer 1 or even higher, possibly until the response of a system pressure limiting valve, not shown , eg analogous to an in Fig. 10 shown system pressure relief valve 34th
  • a fifth connection 10 ⁇ 17 (FIG. Fig. 2 ) from the working line B to the tank line R increasingly open, whereby the sink side of the water consumer 1 depressurized.
  • opening the fifth connection can also take place independently of time as required.
  • the first connection 21 ⁇ 9 is opened, so that the delivery side of the variable displacement 2 is now connected to the hydraulic consumer 1 and a mass flow uses, the delivery pressure in the pressure line P at this time already at least the Load pressure in the hydraulic consumer 1 corresponds and the hydraulic consumer 1 receives its movement to lift the load L from standstill without sagging.
  • the third connection 18, 19 has been closed, and if appropriate the first and second connections 11 ⁇ 16 and 21 ⁇ 9 are still open. The load is lifted.
  • Fig. 4 illustrates the optional position 1, at which the load pressure signal circuit 6 has been disconnected from the tank line R, that is, the terminals 13, 14 are separated.
  • the position 3 in Fig. 3 corresponds, as a second connection 11 ⁇ 16, the terminals 11 and 16 connected to each other, so that the load pressure from the hydraulic consumer 1 and here the working line A is transferred to the load pressure signal circuit 6 to the control device 3, while the terminals 18 and 19 of the third Connection via the control notch or the control slot 20 are connected to each other (mixed pressure situation), and optionally the terminals 10 and 17 of a fifth connection 10 ⁇ 17 and the terminals 9 and 21 of the first connection 21 ⁇ 9 are interconnected.
  • Fig. 7 finally represents the position 4 in Fig. 3 ie position III when lifting the load.
  • Fig. 8 is a diagram similar to that of Fig. 3 to the control sequence in the adjustment of the piston valve 7, here to the lifting end position, in contrast to Fig. 3 in an end portion of the Verstellhubes of the spool 7, the previously closed (after the position 3) third connection 18 ⁇ 19 a second time, for example, shortly before the position 5 open and then held open, eh, eg, shortly after the position zeit the second connection 11 ⁇ 16 has been closed while the first connection 21 ⁇ 9, ie from the pressure line P to the working line A, is increasingly opened.
  • the first connection 21 ⁇ 9 could be opened at the same time as or before or after the opening of the second connection 11 ⁇ 16.
  • Fig. 9 This is done in that in the illustrated intermediate position of the spool valve 7, in which the terminals 10 and 17 are connected via the connecting channel 24, ie the working line B to the tank line R is open, and at the same time a mass flow from port 21 to port 9 (first connection ) takes place via a connecting channel 26 in the piston slide 7, ie from the pressure line P to the working line A, the terminals 18, 19 are connected via a further control notch or a control slot 25 in the periphery of the spool 7 and pressure from the pressure line P thus in the load pressure signal circuit. 6 is fed and the pressure signal for the control device 3 is raised above the current load pressure in the hydraulic consumer 1 addition, so that the control device 3 up-regulates the variable displacement 2 to maximum flow and the hydraulic consumer 1 performs a kind of rapid traverse to maximum speed.
  • the further control slot or the further control notch 25 is an option and may be provided in addition to the control notch or this control slot 20, or alternatively be omitted.
  • the lifting movement of the load is initiated from standstill without previous sagging and is a load-independent volume control is performed immediately after recording movement in the lifting direction, although to initiate the lifting movement without sagging temporarily the load independence was suppressed because of the increase of the pressure signal for the control device 3.
  • Fig. 10 illustrates a block diagram of a further embodiment of the control H, in which for the time-leading raising of the pressure signal for the control device 3, only the first, second, fourth and fifth connections 21 ⁇ 9; 11 ⁇ 16; 14 ⁇ 13; 10 ⁇ 17 in the proportional directional slide 4 are realized, however, the third connection 19 ', 18' in a separate valve 32, for example, a 2/2-solenoid valve, between the load pressure signal circuit 6 and connected to the pressure line P line 33 is opened or closed, for example via a parent , not shown control, in timing to the Verstellhub the spool 7 '.
  • Their functions are taken over by the separate valve 32, which is accommodated in an end plate 31 of the control H, for example.
  • Fig. 10 a system pressure limiting valve 34 in another end plate, to which the delivery side of the control pump 2 and the load pressure signal circuit 6 are connected.
  • the piston slide 7 ' are for the adjustment of two proportional magnets 27, 28 and their associated proportional pressure pilot controls 29, 30 indicated.
  • a hand pilot lever may also be provided.
  • the third connection 19 ', 18' is opened in time shortly after the position 1 of the spool valve 7 ', and closed again in time shortly after the position 3.
  • the in 8 and 9 shown method variant with the pressure increase in the end portion of the Verstellhubes of the spool 7 ' is carried out in the lifting direction, which is shortly after the position 3 in Fig. 8 closed separate valve 32 temporally just before the position 5 reopened and kept open, so that it is in the position 6 in Fig. 8 is still open and the variable displacement pump 2 promotes maximum amount per unit time.
  • the spool 7 leads the proportional directional spool in the Fig. 1 to 7 a maximum adjustment stroke of 10 mm.
  • the procedural control sequence can then be realized so that the fourth connection 14 ⁇ 13 between 0 mm and 1.2 mm is gradually closed, and only from 1.4 mm to the end of the adjustment at 10.0 mm, the working line B with the Tank line R is connected. From a Verstellhub of 1.4 mm to 2.5 mm, the third connection 18 ⁇ 19 is open, thus overlaps, if necessary, in time the second connection 11 ⁇ 16, which is opened at 1.8 mm, for example, and open to 10.0 mm remains. Also at least in about 1.0 mm, the first connection 21 ⁇ 9 is then opened up to 10.0 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)

Claims (10)

  1. Procédé de levage hydraulique d'une charge (L), en particulier au moyen d'une grue forestière ou d'une excavatrice hydraulique, avec une commande sans valve de maintien de charge (H), selon lequel au moins un consommateur hydraulique (1) à simple ou double effet déplaçant la charge (L) est actionné à l'arrêt, au moins en grande partie indépendamment de la charge, par déplacement d'un tiroir à piston (7, 7') d'un distributeur à tiroir à commande proportionnelle (4) d'une position neutre (I) vers une position de levage, où la commande (H) comporte un circuit de signalisation de pression de charge (6) conduit via le distributeur à tiroir à commande proportionnelle jusqu'à un dispositif de réglage (3) d'une pompe à débit variable (2) et le débit de la pompe à débit variable (2) est augmenté au moins par un signal de pression provenant du circuit de signalisation de pression de charge (6) à partir d'une position de veille, caractérisé en ce qu'avant d'ouvrir une première connexion (21, 9) entre la pompe à débit variable (2) et le consommateur hydraulique (1) et avant d'ouvrir une deuxième connexion (11, 16) dans le circuit de signalisation de pression de charge (6) entre le consommateur hydraulique (1) et le dispositif de réglage (2), une troisième connexion (18, 19 ; 18', 19') est ouverte dans le circuit de signalisation de pression de charge (6) entre la pompe à débit variable (2) et le dispositif de réglage (3) et le signal de pression pour le dispositif de réglage (3) est relevé, sans prélever de fluide hydraulique dans le consommateur hydraulique (1), par augmentation du débit de la pompe à débit variable (2) au moins jusqu'à peu près au niveau de pression de la pression de charge dans le consommateur hydraulique.
  2. Procédé selon la revendication 1, caractérisé en ce que la troisième connexion (18, 19 ; 18', 19') est refermée après l'ouverture de la première connexion (21, 9) et que la deuxième connexion (11, 16) est ouverte avant la fermeture de la troisième connexion (18, 19 ; 18', 19') et après ou avant qu en même temps que l'ouverture de la première connexion (21, 9).
  3. Procédé selon les revendication 1 et 2, caractérisé en ce que les premières, deuxièmes et troisièmes connexion (21, 9; 11, 16; 18, 19) dans le distributeur à tiroir à commande proportionnelle (4) sont ouvertes et fermées par son tiroir à piston (7).
  4. Procédé selon la revendication 1, caractérisé en ce que les première et deuxième connexion (21, 9 ; 11, 16) sont ouvertes et fermées, dans le distributeur à tiroir à commande proportionnelle (4), par son tiroir à piton (7'), et la troisième connexion (18', 19') est ouverte et fermée dans une vanne (32) placée séparément entre la pompe à débit variable (2) et le circuit de signalisation de pression de charge (6).
  5. Procédé selon au moins l'une quelconque des revendications précédentes, caractérisé en ce qu'avant l'ouverture de la troisième connexion (18, 19), une quatrième connexion (14, 13) entre le circuit de signalisation de pression de charge (6) et un réservoir (R) est fermée.
  6. Procédé selon la revendication 1, caractérisé en ce que pour relever le signal de pression pour le dispositif de réglage (3) au-delà de la pression de charge dans le consommateur hydraulique (1), la troisième connexion (18, 19 ; 18', 19') située dans une partie d'extrémité de la course du tiroir à piston (7), fermée dans l'intervalle, est rouverte depuis la position neutre (I) et maintenue ouverte dans la position de levage.
  7. Commande (H) destinée au moins au levage hydraulique d'une charge (L) au moyen d'un consommateur hydraulique (1) à double effet, en particulier dans une grue forestière ou une excavatrice hydraulique, où la commande (H) comporte un distributeur proportionnel à 4/3 voies (4), une pompe à débit variable (2) avec un dispositif de réglage (3), un régulateur d'alimentation (5) et un circuit de signalisation de pression de charge (6) reliant le consommateur hydraulique (1) via le distributeur à tiroir à commande proportionnelle (4) avec le dispositif de réglage (3) et le régulateur d'alimentation (5), caractérisé en ce qu'une troisième connexion (18, 19 ; 18', 19') est prévue soit dans le distributeur à tiroir à commande proportionnelle (4) soit dans une vanne séparée (32) et, afin d'initier un mouvement de levage de la charge (L) par ouverture d'une première connexion (21, 9) entre la pompe à débit variable (2) et le consommateur hydraulique (1) dans le distributeur à tiroir à commande proportionnelle (4) et ouverture d'une deuxième connexion (11, 16), prévue dans le distributeur à tiroir à commande proportionnelle (4), entre le consommateur hydraulique (1) et le dispositif de réglage (3) dans le circuit de signalisation de pression de charge (6), la troisième connexion doit être ouverte avant l'ouverture de la première et de la deuxième connexion et relie la pompe à débit variable (2) côté débit avec le dispositif de réglage (3) en vue d'augmenter un signal de pression pour le dispositif de réglage (3) au moins jusqu'à peu près au niveau de pression de la pression de charge dans le consommateur hydraulique (1).
  8. Commande selon la revendication 7, caractérisée en ce que la troisième connexion (18, 19) comprend au moins une entaille de commande ou une fente de commande (20) dans la circonférence du tiroir à piston (7) du distributeur à tiroir à commande proportionnelle (4), qui est réglable, dans respectivement un alésage de tiroir (8), par rapport à un raccord (18) relié au côté débit de la pompe de réglage (2) et un raccord (19) relié au circuit de signalisation de pression de charge (6) en amont du distributeur à tiroir à commande proportionnelle (4).
  9. Commande selon la revendication 7, caractérisée en ce que la troisième connexion (18, 19) comprend au moins une autre entaille de commande ou fente de commande (25) en une position axiale du tiroir à piston (7) différente de la position axiale de l'entaille de commande ou de la fente de commande (20), et qui, en fonction de la course du tiroir à piston (7) à partir de la position neutre (I) dans la direction de levage, rouvre la troisième connexion (18, 19) une deuxième fois seulement dans une partie d'extrémité de la course du tiroir à piston (7).
  10. Commande selon la revendication 7, caractérisée en ce qu'afin de relever une deuxième fois le signal de pression pour le dispositif de réglage (3) au-delà de la pression de charge dans le consommateur hydraulique (1), la troisième connexion (18', 19') dans la vanne séparée (32), de préférence une vanne 2/2 à commande magnétique, doit être ouverte et maintenue ouverte dans la course du tiroir à piston (7') dans le distributeur à tiroir à commande proportionnelle (4) dans la direction de levage dans une partie d'extrémité détournée de la position neutre (I).
EP13174340.3A 2013-06-28 2013-06-28 Procédé et commande pour le levage hydraulique d'une charge Active EP2818732B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13174340.3A EP2818732B1 (fr) 2013-06-28 2013-06-28 Procédé et commande pour le levage hydraulique d'une charge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13174340.3A EP2818732B1 (fr) 2013-06-28 2013-06-28 Procédé et commande pour le levage hydraulique d'une charge

Publications (2)

Publication Number Publication Date
EP2818732A1 EP2818732A1 (fr) 2014-12-31
EP2818732B1 true EP2818732B1 (fr) 2015-12-09

Family

ID=48700403

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13174340.3A Active EP2818732B1 (fr) 2013-06-28 2013-06-28 Procédé et commande pour le levage hydraulique d'une charge

Country Status (1)

Country Link
EP (1) EP2818732B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3093504B1 (fr) * 2015-05-12 2019-08-21 HAWE Hydraulik SE Valve de réglage de débit à 2 voies pressostatique pour des applications hydrauliques et système de valve doté d'une valve de réglage de débit à 2 voies

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7726125B2 (en) * 2007-07-31 2010-06-01 Caterpillar Inc. Hydraulic circuit for rapid bucket shake out
EP2339073A1 (fr) * 2009-12-23 2011-06-29 Perkins Engines Company Limited Système hydraulique pour machine, machine et procédé d'utilisation
EP3514394A1 (fr) * 2010-05-11 2019-07-24 Parker Hannifin Corp. Système hydraulique à compensation de pression doté d'une commande de la pression différentielle

Also Published As

Publication number Publication date
EP2818732A1 (fr) 2014-12-31

Similar Documents

Publication Publication Date Title
EP1915538B1 (fr) Montage pour commander un cylindre d'entrainement hydraulique a double effet
DE102013222954B4 (de) Hydraulische Antriebsvorrichtung für eine Arbeitsmaschine
EP2541072B1 (fr) Agencement de commande et procédé de commande de plusieurs consommateurs hydrauliques
DE102012223225B4 (de) Hydraulikantriebsgerät für eine Arbeitsmaschine
DE2029826A1 (de) Hydraulische Steuereinrichtung fur Ausleger und Ladeschaufel eines Vorder laders
DE102005035981A1 (de) Hydraulische Schaltungsanordnung, insbesondere für den Antrieb von Betonverteilermasten
DE102017121818A1 (de) Flurförderzeug, hydraulisches System für ein Flurförderzeug und Verfahren zum Betreiben eines hydraulischen Systems
DE202014006861U1 (de) Arbeitsmaschine
EP3336051B1 (fr) Dispositif de levage pour un chariot de manutention ainsi qu'un tel chariot de manutention
EP3018364B1 (fr) Dispositif de commande avec piston coulissant
EP3527833B1 (fr) Circuit d'alimentation à commande à pression réglable
EP1643138B1 (fr) Commande hydraulique
EP2818732B1 (fr) Procédé et commande pour le levage hydraulique d'une charge
EP2455552B1 (fr) Appareil de travail
DE10219718B4 (de) Hydraulische Ventilanordnung
DE102008008102A1 (de) Verfahren und Vorrichtung zur Druckmittelversorgung von zumindest drei hydraulischen Verbrauchern
EP2600011A2 (fr) Distributeur hydraulique pour le dispositif de levage d'un véhicule agricole
EP3037678B1 (fr) Module de levage
EP2551232B1 (fr) Système de commande de grue
DE112019005769T5 (de) Hydrauliksteuerkreis für eine baumaschine
EP1837529B1 (fr) Commande hydraulique
EP1215397B1 (fr) Bloc de distributeur à voies multiples
EP2541071A2 (fr) Agencement de soupapes pour un système de commande hydraulique
DE102009012722B4 (de) Hydraulische Schaltungsanordnung
DE102021006222B3 (de) Pressenvorrichtung und 2/2-Wege-Proportional-Sitzventil

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

17P Request for examination filed

Effective date: 20131216

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

REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Ref document number: 502013001590

Country of ref document: DE

Free format text: PREVIOUS MAIN CLASS: F15B0013140000

Ipc: F15B0013040000

RIC1 Information provided on ipc code assigned before grant

Ipc: F15B 13/04 20060101AFI20150508BHEP

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20150622

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): 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

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 764713

Country of ref document: AT

Kind code of ref document: T

Effective date: 20151215

Ref country code: CH

Ref legal event code: EP

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: 502013001590

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: PATENTANWALTSBUERO JEAN HUNZIKER AG, CH

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20151209

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

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: 20160309

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: 20151209

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: 20151209

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: 20151209

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: 20151209

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: 20151209

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: 20151209

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: 20160310

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: 20151209

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: 20151209

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: 20151209

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: 20160409

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: 20151209

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: 20160411

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: 20151209

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: 20151209

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: 20151209

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

Ref country code: IT

Payment date: 20160630

Year of fee payment: 4

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502013001590

Country of ref document: DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502013001590

Country of ref document: DE

Representative=s name: GROSSE, SCHUMACHER, KNAUER, VON HIRSCHHAUSEN, DE

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: 20151209

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: 20151209

26N No opposition filed

Effective date: 20160912

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: 20151209

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

Ref country code: BE

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

Effective date: 20160630

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: 20151209

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20170228

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

Ref country code: FR

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

Effective date: 20160630

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: 20160628

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

Effective date: 20170628

REG Reference to a national code

Ref country code: CH

Ref legal event code: PCOW

Free format text: NEW ADDRESS: EINSTEINRING 17, 85609 ASCHHEIM (DE)

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: 20170628

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502013001590

Country of ref document: DE

Representative=s name: GROSSE, SCHUMACHER, KNAUER, VON HIRSCHHAUSEN, DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 502013001590

Country of ref document: DE

Owner name: HAWE HYDRAULIK SE, DE

Free format text: FORMER OWNER: HAWE HYDRAULIK SE, 81673 MUENCHEN, DE

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: 20130628

Ref country code: IT

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

Effective date: 20170628

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

Ref country code: MK

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: 20151209

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: 20151209

Ref country code: LU

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

Effective date: 20160628

Ref country code: MT

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: 20151209

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: 20151209

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: 20151209

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

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: 20151209

Ref country code: AL

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: 20151209

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 764713

Country of ref document: AT

Kind code of ref document: T

Effective date: 20180628

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: 20180628

REG Reference to a national code

Ref country code: CH

Ref legal event code: PFUS

Owner name: HAWE HYDRAULIK SE, DE

Free format text: FORMER OWNER: HAWE HYDRAULIK SE, DE

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

Ref country code: CH

Payment date: 20210623

Year of fee payment: 9

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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: 20220630

Ref country code: CH

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

Effective date: 20220630

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

Effective date: 20230523

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

Ref country code: DE

Payment date: 20230627

Year of fee payment: 11