EP2620656B1 - Composant de soupape à détection de charge avec commande à pression - Google Patents

Composant de soupape à détection de charge avec commande à pression Download PDF

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Publication number
EP2620656B1
EP2620656B1 EP13150235.3A EP13150235A EP2620656B1 EP 2620656 B1 EP2620656 B1 EP 2620656B1 EP 13150235 A EP13150235 A EP 13150235A EP 2620656 B1 EP2620656 B1 EP 2620656B1
Authority
EP
European Patent Office
Prior art keywords
pressure
valve
consumer
pump
port
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.)
Not-in-force
Application number
EP13150235.3A
Other languages
German (de)
English (en)
Other versions
EP2620656A2 (fr
EP2620656A3 (fr
Inventor
Christian Duerr
Robert Rueppel
Kjeld Madsen
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2620656A2 publication Critical patent/EP2620656A2/fr
Publication of EP2620656A3 publication Critical patent/EP2620656A3/fr
Application granted granted Critical
Publication of EP2620656B1 publication Critical patent/EP2620656B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
    • F15B11/05—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed specially adapted to maintain constant speed, e.g. pressure-compensated, load-responsive
    • F15B11/055—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed specially adapted to maintain constant speed, e.g. pressure-compensated, load-responsive by adjusting the pump output or bypass
    • 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
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/25—Pressure control functions
    • F15B2211/253—Pressure margin control, e.g. pump pressure in relation to 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
    • F15B2211/30—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
    • F15B2211/50—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
    • F15B2211/50518—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using pressure relief valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
    • F15B2211/5159—Pressure control characterised by the connections of the pressure control means in the circuit being connected to an output member and a 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
    • F15B2211/605—Load sensing circuits
    • F15B2211/6051—Load sensing circuits having valve means between output member and the load sensing circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/605—Load sensing circuits
    • F15B2211/6051—Load sensing circuits having valve means between output member and the load sensing circuit
    • F15B2211/6054—Load sensing circuits having valve means between output member and the load sensing circuit using shuttle 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/605—Load sensing circuits
    • F15B2211/6051—Load sensing circuits having valve means between output member and the load sensing circuit
    • F15B2211/6055—Load sensing circuits having valve means between output member and the load sensing circuit using pressure relief valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/65—Methods of control of the load sensing pressure
    • F15B2211/654—Methods of control of the load sensing pressure the load sensing pressure being lower than the load pressure

Definitions

  • the first subassembly 60 includes a proportional directional control valve 52 having a middle blocking position and a first and a second working position.
  • the pump line P In the first working position, the pump line P is connected to the first consumer port A via a first continuously variable metering throttle and the second consumer port B is connected to the tank line T.
  • the pump line P In the second working position, the pump line P is connected via a second continuously variable metering orifice with the second consumer port B, wherein the first consumer port A is connected to the tank line T.
  • the valve spool of the proportional directional control valve 52 is pressed by two return springs 53 in the middle blocking position, wherein the first and the second working position can be adjusted hydraulically with an associated pilot valve 55.
  • the pilot valves 55 may be electrically controlled by the controller of the parent machine.
  • Fig. 3 shows a circuit diagram of a second embodiment of a first consumer assembly according to the invention 50. This differs only in terms of the second pressure relief valve 32 of the first consumer assembly after Fig. 2 , so far as the comments on Fig. 2 can be referenced.
  • the check valve 34 has been integrated into the second pressure relief valve 32, so that they form a mountable as a whole assembly.
  • Such a pressure limiting valve is known, for example, from the catalog "Pressure limiting and feed valve, pilot operated - type MHDBN" from Bosch Rexroth AG (Order No. RD 64602, issue 09/2011), so that reference may be made to the statements there.

Landscapes

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

Claims (8)

  1. Bloc de soupapes (10) comprenant un premier et un deuxième raccord de consommateur (A ; B) servant à raccorder un consommateur hydraulique (11), un raccord de pompe (P) servant à raccorder une pompe (13), un raccord de réservoir (T) servant à raccorder un réservoir (12) et un raccord de détection de charge (LS) destiné à être raccordé à un régulateur de pression de refoulement (14) de la pompe (13),
    un étranglement de dosage (20) réglable en continu étant prévu, avec lequel une balance de pression (22) est montée en série côté pompe, laquelle balance de pression est reliée au raccord de pompe (P), de telle sorte qu'une première pression (41) soit obtenue entre l'étranglement de dosage (20) et la balance de pression (22), un étranglement d'amortissement (21) étant monté en série avec l'étranglement de dosage (20) côté réservoir, de telle sorte qu'une deuxième pression (42) soit obtenue entre l'étranglement de dosage (20) et l'étranglement d'amortissement (21), laquelle deuxième pression est reliée à l'un des raccords de consommateur (A ; B), une première soupape de limitation de pression (31) à pression de déclenchement réglable étant montée en série avec l'étranglement d'amortissement (21) côté réservoir, de telle sorte qu'une troisième pression (43) soit obtenue entre l'étranglement d'amortissement (21) et la première soupape de limitation de pression (31), laquelle troisième pression est reliée au moins indirectement au raccord de détection de charge (LS), la première et la troisième pression (41 ; 43) étant raccordées à la balance de pression (22) de telle sorte que la balance de pression (22) règle une différence de pression prédéfinie entre la première et la troisième pression (41 ; 43), la deuxième pression (42) étant raccordée à une deuxième soupape de limitation de pression (32) dont la pression de déclenchement est réglable,
    caractérisé en ce que la pression de déclenchement de la deuxième soupape de limitation de pression (32) peut être réglée hydrauliquement au moyen de la troisième pression (43) de telle sorte qu'elle soit supérieure à la troisième pression (43) d'une deuxième différence de pression prédéfinie.
  2. Bloc de soupapes selon la revendication 1,
    dans lequel la balance de pression (22) présente une position de maintien de charge (24) dans laquelle elle est bloquée, la position de maintien de charge (24) survenant lorsque la pression au niveau du raccord de pompe (P) chute en dessous de la deuxième pression (42).
  3. Blocs de soupapes selon l'une quelconque des revendications précédentes,
    dans lequel une soupape anti-retour (34) est montée en parallèle avec la deuxième soupape de limitation de pression (32), laquelle soupape anti-retour est installée de telle sorte que la deuxième pression (42) ne puisse pas chuter en dessous de la pression ambiante.
  4. Bloc de soupapes selon la revendication 3,
    dans lequel la soupape anti-retour (34) et la deuxième soupape de limitation de pression (32) sont réalisées sous la forme d'un bloc pouvant être monté comme un tout.
  5. Bloc de soupapes selon l'une quelconque des revendications précédentes,
    dans lequel la pression de déclenchement de la première soupape de limitation de pression (31) peut être réglée à la fois manuellement et électriquement.
  6. Bloc de soupapes selon l'une quelconque des revendications précédentes,
    dans lequel l'étranglement de dosage (20) fait partie d'un distributeur proportionnel (52) à l'aide duquel le sens de déplacement du consommateur (11) associé peut être réglé.
  7. Bloc de soupapes selon l'une quelconque des revendications précédentes,
    dans lequel le premier et le deuxième raccord de consommateur (A ; B) sont prévus sur un premier bloc de consommateur (50) pouvant être monté comme un tout, au moins un autre bloc de consommateur pouvant être monté comme un tout étant prévu, auquel un consommateur associé peut être raccordé, une conduite de pompe (P) étant reliée au raccord de pompe et une conduite de réservoir (T) étant reliée au raccord de réservoir, les conduites de pompe et de réservoir (P ; T) traversant respectivement tous les blocs de consommateur, chaque bloc de consommateur comprenant un sélecteur de circuit (51), lesquels sont interconnectés en une cascade qui se termine au niveau du raccord de détection de charge (LS), la troisième pression (43) étant raccordée au sélecteur de circuit (51) du premier bloc de consommateur (50).
  8. Bloc de soupapes selon la revendication 7,
    dans lequel la première et/ou la deuxième soupape de limitation de pression (31 ; 32) sont réalisées sous forme de blocs (70 ; 71) pouvant être montés comme un tout, lesquels sont installés depuis l'extérieur sur le premier bloc de consommateur (60) .
EP13150235.3A 2012-01-26 2013-01-04 Composant de soupape à détection de charge avec commande à pression Not-in-force EP2620656B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012001549A DE102012001549A1 (de) 2012-01-26 2012-01-26 Load-Sensing-Ventilbaugruppe mit Drucksteuerung

Publications (3)

Publication Number Publication Date
EP2620656A2 EP2620656A2 (fr) 2013-07-31
EP2620656A3 EP2620656A3 (fr) 2017-03-29
EP2620656B1 true EP2620656B1 (fr) 2018-12-26

Family

ID=47561339

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13150235.3A Not-in-force EP2620656B1 (fr) 2012-01-26 2013-01-04 Composant de soupape à détection de charge avec commande à pression

Country Status (3)

Country Link
EP (1) EP2620656B1 (fr)
BR (1) BR102013001832A2 (fr)
DE (1) DE102012001549A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105443475B (zh) * 2015-12-30 2017-10-27 中国铁建重工集团有限公司 负载压力自适应控制液压系统、控制方法及预切槽机
FR3054008B1 (fr) * 2016-07-13 2019-05-10 Robert Bosch Gmbh Installation de distributeur hydraulique equipee d'un absorbeur de chocs de pression
DE102020210441A1 (de) * 2020-08-17 2022-02-17 Hawe Hydraulik Se Proportional-Schieberventil mit einem Druckbegrenzungsventil, Druckbegrenzungsventil und Hydrauliksystem

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3709504C2 (de) * 1987-03-23 1995-02-02 Rexroth Mannesmann Gmbh Ventileinrichtung
DE4420682A1 (de) * 1994-06-14 1996-01-04 Rexroth Mannesmann Gmbh Hydrauliksteuerung für eine teilende Werkzeugmaschine
DE19715020A1 (de) * 1997-04-11 1998-10-15 Rexroth Mannesmann Gmbh Hydraulische Steueranordnung, insbesondere für ein Fahrzeug zum Transport von Absetzmulden
DE19734020A1 (de) * 1997-08-06 1999-02-11 Mannesmann Rexroth Ag Vorgesteuertes Druckbegrenzungsventil
FI104531B (fi) * 1998-09-15 2000-02-29 Timberjack Oy Karsintalaitteisto ja menetelmä karsintalaitteistossa

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
DE102012001549A1 (de) 2013-08-01
EP2620656A2 (fr) 2013-07-31
BR102013001832A2 (pt) 2016-02-23
EP2620656A3 (fr) 2017-03-29

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