EP0816691A3 - Stop valve with pressure limitation - Google Patents

Stop valve with pressure limitation Download PDF

Info

Publication number
EP0816691A3
EP0816691A3 EP97109617A EP97109617A EP0816691A3 EP 0816691 A3 EP0816691 A3 EP 0816691A3 EP 97109617 A EP97109617 A EP 97109617A EP 97109617 A EP97109617 A EP 97109617A EP 0816691 A3 EP0816691 A3 EP 0816691A3
Authority
EP
European Patent Office
Prior art keywords
valve
stop valve
consumer
blocks
pressure limitation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP97109617A
Other languages
German (de)
French (fr)
Other versions
EP0816691B1 (en
EP0816691A2 (en
Inventor
Wolfgang Koetter
Rolf Siegenfuehr
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 EP0816691A2 publication Critical patent/EP0816691A2/en
Publication of EP0816691A3 publication Critical patent/EP0816691A3/en
Application granted granted Critical
Publication of EP0816691B1 publication Critical patent/EP0816691B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/01—Locking-valves or other detent i.e. load-holding devices
    • F15B13/015—Locking-valves or other detent i.e. load-holding devices using an enclosed pilot flow 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
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20538—Type of pump constant 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
    • F15B2211/30505—Non-return valves, i.e. check 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
    • F15B2211/3116—Neutral or centre positions the pump port being open in the centre position, e.g. so-called open 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
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/327—Directional control characterised by the type of actuation electrically or electronically
    • 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
    • F15B2211/35—Directional control combined with flow control
    • F15B2211/353—Flow control by regulating means in return line, i.e. meter-out 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
    • F15B2211/50563—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure
    • F15B2211/50581—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure using counterbalance 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
    • F15B2211/5153—Pressure control characterised by the connections of the pressure control means in the circuit being connected to an output member and a 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
    • F15B2211/55—Pressure control for limiting a pressure up to a maximum pressure, e.g. by using a pressure relief 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7053—Double-acting output members

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Check Valves (AREA)
  • Bag Frames (AREA)

Abstract

Die Erfindung betrifft ein Sperrventil, das in mindestens einem Verbraucherkanal eines mit einem Längsschieber ausgestatteten Wegeventils angeordnet ist und in Rückströmrichtung sperrt. Im Körper des Sperrventils sitzt ein ebenfalls in Rückströmrichtung sperrendes Hilfsventil, das zur Einleitung der verbraucherseitigen Verbraucherkanalentlastung über einen vom Längsschieber betätigten Stößel geöffnet wird. Im oder am Sperrventilkörper ist neben dem Hilfsventil ein Druckbegrenzungsventil angeordnet, daß dann öffnet, wenn im verbraucherseitigen Druckmittelstrang der erforderliche Arbeitsdruck um ein vorgegebenes Maß überschritten wird.

Figure 00000001
The invention relates to a check valve which is arranged in at least one consumer channel of a directional valve equipped with a longitudinal slide and blocks in the backflow direction. An auxiliary valve, which also blocks in the backflow direction, is located in the body of the shut-off valve and is opened via a plunger actuated by the longitudinal slide to initiate the consumer channel relief. In or on the check valve body, a pressure relief valve is arranged next to the auxiliary valve, which opens when the required working pressure in the consumer-side pressure medium line is exceeded by a predetermined amount.
Figure 00000001
EP97109617A 1996-07-06 1997-06-13 Stop valve with pressure limitation Expired - Lifetime EP0816691B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19627306A DE19627306A1 (en) 1996-07-06 1996-07-06 Stop valve with pressure limitation
DE19627306 1996-07-06

Publications (3)

Publication Number Publication Date
EP0816691A2 EP0816691A2 (en) 1998-01-07
EP0816691A3 true EP0816691A3 (en) 1999-03-17
EP0816691B1 EP0816691B1 (en) 2002-12-18

Family

ID=7799133

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97109617A Expired - Lifetime EP0816691B1 (en) 1996-07-06 1997-06-13 Stop valve with pressure limitation

Country Status (2)

Country Link
EP (1) EP0816691B1 (en)
DE (2) DE19627306A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29911076U1 (en) * 1999-06-24 1999-09-23 Heilmeier & Weinlein Fabrik für Oel-Hydraulik GmbH & Co KG, 81673 München Hydraulic load holding valve
DE19953188A1 (en) * 1999-11-05 2001-05-10 Bosch Gmbh Robert Hydraulic control valve with integral shutoff valve with parallel mounting and with a rigid link from the control valve
KR101105257B1 (en) 2003-04-10 2012-01-17 보쉬 렉스로트 아게 Infinitely variable directional valve
DE10325294A1 (en) 2003-06-04 2004-12-23 Bosch Rexroth Ag Hydraulic control arrangement
DE102009019907A1 (en) 2009-05-04 2010-11-11 Robert Bosch Gmbh check valve
DE102009034616A1 (en) 2009-07-27 2011-02-03 Robert Bosch Gmbh Way valve arrangement
TR201109382A2 (en) * 2011-09-23 2013-01-21 Hema Endüstri̇ Anoni̇m Şi̇rketi̇ Hydraulic lifter control system.
DE102018221288A1 (en) 2018-01-04 2019-07-04 Robert Bosch Gmbh Valve assembly, work machine, and method of controlling a valve assembly

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3216448A (en) * 1963-02-25 1965-11-09 Parker Hannifin Corp Spool valve assembly
DE2559029A1 (en) * 1975-12-29 1977-07-07 Heilmeier & Weinlein Brake valve for limiting fluid pressure - has opposing valve bodies of pressure limiting and nonreturn valves
DE3048746A1 (en) * 1980-12-23 1982-07-22 Robert Bosch Gmbh, 7000 Stuttgart Hydraulic system with double-acting ram - has each control valve connected to relief valve of other one
DE3305282A1 (en) * 1982-02-18 1983-08-25 Atlas Copco AB, Nacka Load-holding valve or overcentre valve for hydraulic systems
EP0466582A1 (en) * 1990-07-13 1992-01-15 Kabushiki Kaisha Kosmek Pressure oil supply/discharge circuit and valve device for use in said circuit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3216448A (en) * 1963-02-25 1965-11-09 Parker Hannifin Corp Spool valve assembly
DE2559029A1 (en) * 1975-12-29 1977-07-07 Heilmeier & Weinlein Brake valve for limiting fluid pressure - has opposing valve bodies of pressure limiting and nonreturn valves
DE3048746A1 (en) * 1980-12-23 1982-07-22 Robert Bosch Gmbh, 7000 Stuttgart Hydraulic system with double-acting ram - has each control valve connected to relief valve of other one
DE3305282A1 (en) * 1982-02-18 1983-08-25 Atlas Copco AB, Nacka Load-holding valve or overcentre valve for hydraulic systems
EP0466582A1 (en) * 1990-07-13 1992-01-15 Kabushiki Kaisha Kosmek Pressure oil supply/discharge circuit and valve device for use in said circuit

Also Published As

Publication number Publication date
DE19627306A1 (en) 1998-01-08
EP0816691B1 (en) 2002-12-18
DE59708982D1 (en) 2003-01-30
EP0816691A2 (en) 1998-01-07

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