EP2280179A3 - Directional valve assembly - Google Patents

Directional valve assembly Download PDF

Info

Publication number
EP2280179A3
EP2280179A3 EP20100006382 EP10006382A EP2280179A3 EP 2280179 A3 EP2280179 A3 EP 2280179A3 EP 20100006382 EP20100006382 EP 20100006382 EP 10006382 A EP10006382 A EP 10006382A EP 2280179 A3 EP2280179 A3 EP 2280179A3
Authority
EP
European Patent Office
Prior art keywords
working channel
valve
connection
port
working
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
EP20100006382
Other languages
German (de)
French (fr)
Other versions
EP2280179A2 (en
EP2280179B1 (en
Inventor
Reiner Kunz
Andreas Albrecht
Markus Grammer
Steffen Knapper
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 EP2280179A2 publication Critical patent/EP2280179A2/en
Publication of EP2280179A3 publication Critical patent/EP2280179A3/en
Application granted granted Critical
Publication of EP2280179B1 publication Critical patent/EP2280179B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7758—Pilot or servo controlled
    • Y10T137/7761—Electrically actuated valve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87169—Supply and exhaust
    • Y10T137/87193—Pilot-actuated

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Valve Housings (AREA)
  • Multiple-Way Valves (AREA)

Abstract

Offenbart ist eine Wegeventilanordnung mit einem einen Ventilschieber (22) aufweisenden Wegeventil (8). Über dieses ist eine Druckmittelverbindung zwischen einem Druckanschluss (P), einem Tankanschluss (T) und zumindest einem Arbeitsanschluss (A,B) steuerbar. In einem mit dem Arbeitsanschluss (A) verbundenen Arbeitskanal (14) ist ein Sperrventil (10) angeordnet. Der Druck im Arbeitskanal ist mit einer Entlastungseinheit (10,65,100) abbaubar, wobei die Druckmittelverbindung zwischen dem Arbeitskanal und dem Tankanschluss durch den Ventilschieber gesperrt ist. Die Entlastungseinheit hat einen Zwischenraum (100), der im Druckmittelströmungspfad zwischen dem Sperrventil (10) und einer den Arbeitskanal zum Tankanschluss absperrenden Steuerkante (65) des Ventilschiebers ausgebildet ist und zum Aufnehmen eines Kompressionsvolumens des Arbeitskanals vorgesehen ist. Der Zwischenraum ist durch Aufsteuern des Sperrventils mit dem Arbeitskanal verbindbar, wobei über die Steuerkante des Ventilschiebers die Verbindung zum Tankanschluss gesperrt ist.

Figure imgaf001
Disclosed is a directional control valve arrangement with a valve slide (22) having directional control valve (8). About this a pressure medium connection between a pressure port (P), a tank port (T) and at least one working port (A, B) is controllable. A check valve (10) is arranged in a working channel (14) connected to the working connection (A). The pressure in the working channel is degradable with a relief unit (10,65,100), wherein the pressure medium connection between the working channel and the tank connection is blocked by the valve spool. The relief unit has a gap (100) which is formed in the pressure medium flow path between the check valve (10) and a working channel to the tank port shut-off control edge (65) of the valve spool and is provided for receiving a compression volume of the working channel. The gap is connectable by opening the check valve with the working channel, via the control edge of the valve spool, the connection to the tank port is blocked.
Figure imgaf001
EP10006382.5A 2009-07-27 2010-06-19 Directional valve assembly Not-in-force EP2280179B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009034616A DE102009034616A1 (en) 2009-07-27 2009-07-27 Way valve arrangement

Publications (3)

Publication Number Publication Date
EP2280179A2 EP2280179A2 (en) 2011-02-02
EP2280179A3 true EP2280179A3 (en) 2013-11-13
EP2280179B1 EP2280179B1 (en) 2016-08-10

Family

ID=42983512

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10006382.5A Not-in-force EP2280179B1 (en) 2009-07-27 2010-06-19 Directional valve assembly

Country Status (3)

Country Link
US (1) US8479768B2 (en)
EP (1) EP2280179B1 (en)
DE (1) DE102009034616A1 (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013206975A1 (en) 2013-04-18 2014-10-23 Robert Bosch Gmbh Hydraulic control device with one-sided slide control
DE102013207298A1 (en) 2013-04-23 2014-10-23 Robert Bosch Gmbh Hydraulic control device with coupling bush
DE102013220750A1 (en) * 2013-10-15 2015-04-16 Robert Bosch Gmbh Valve block with a valve assembly
DE102013223288A1 (en) 2013-11-15 2015-05-21 Robert Bosch Gmbh Hydraulic control arrangement
DE102014204069A1 (en) * 2014-03-06 2015-09-10 Robert Bosch Gmbh valve disc
DE102014204074A1 (en) 2014-03-06 2015-09-10 Robert Bosch Gmbh manifold
DE102014209278A1 (en) 2014-05-16 2015-11-19 Robert Bosch Gmbh Coupling bush with integrated pressure relief valve
DE102015202916A1 (en) 2015-02-18 2016-08-18 Robert Bosch Gmbh Coupling device with lever operation
US10385884B2 (en) 2015-09-18 2019-08-20 Rost Innovation LLC Control valve compensation system
US10989232B2 (en) 2015-09-18 2021-04-27 Rost Innovation LLC Control valve compensation system
US9897228B2 (en) 2015-11-06 2018-02-20 Caterpillar Inc. Valve having opposing right-angle actuators
US9803661B2 (en) 2015-11-06 2017-10-31 Caterpillar Inc. Valve having right-angle proportional and directional pilot actuators
US9915368B2 (en) 2015-11-06 2018-03-13 Caterpillar Inc. Electrohydraulic valve having dual-action right-angle pilot actuator
US10590962B2 (en) 2016-05-16 2020-03-17 Parker-Hannifin Corporation Directional control valve
WO2019134788A1 (en) 2018-01-04 2019-07-11 Robert Bosch Gmbh Releasable check valve
DE102019204246A1 (en) 2019-03-27 2020-10-01 Robert Bosch Gmbh Pilot control device for a directional valve without internal cable connections
DE102020214024A1 (en) 2020-11-09 2022-05-12 Robert Bosch Gesellschaft mit beschränkter Haftung Hydraulic clutch bush
DE102021212309A1 (en) 2021-11-02 2023-05-04 Robert Bosch Gesellschaft mit beschränkter Haftung Method of minimizing dither hum on a valve
DE102021213691A1 (en) 2021-12-02 2023-06-07 Robert Bosch Gesellschaft mit beschränkter Haftung Valve arrangement with preloaded control oil return
DE102022201584A1 (en) 2022-02-16 2023-08-17 Robert Bosch Gesellschaft mit beschränkter Haftung Valve assembly with position control that can be automatically calibrated
DE102022204640A1 (en) 2022-05-12 2023-11-16 Robert Bosch Gesellschaft mit beschränkter Haftung Valve assembly for the front loader of an agricultural tractor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3595271A (en) * 1969-06-30 1971-07-27 Int Harvester Co Directional flow control valve with float and check valve structure
FR2484029A1 (en) * 1980-06-04 1981-12-11 Rexroth Sigma Double acting selector valve - has sliding cylinder moving across casing to connect operating cylinder to valve
US4958553A (en) * 1988-04-22 1990-09-25 Diesel Kiki Co., Ltd. Hydraulic controller
EP0816691A2 (en) * 1996-07-06 1998-01-07 Robert Bosch Gmbh Stop valve with pressure limitation
US20050011556A1 (en) * 2003-06-17 2005-01-20 Mariusz Dudzik Spool position detection for a hydraulic valve

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125120A (en) * 1964-03-17 hasbany
US3126031A (en) * 1964-03-24 hayner
US3216448A (en) * 1963-02-25 1965-11-09 Parker Hannifin Corp Spool valve assembly
US3662783A (en) * 1970-02-02 1972-05-16 Parker Hannifin Corp Spool valve assembly
US3726093A (en) * 1971-11-15 1973-04-10 Parker Hannifin Corp Pump control system
JP3260279B2 (en) * 1996-04-03 2002-02-25 株式会社荏原製作所 Hydraulic proportional control valve
JP3703265B2 (en) * 1997-08-26 2005-10-05 カヤバ工業株式会社 Hydraulic control device
US6637461B2 (en) * 2002-03-08 2003-10-28 Husco International, Inc. Electrically operated hydraulic actuator with force feedback position sensing
US20040221896A1 (en) * 2003-05-08 2004-11-11 Ballenger Devane R. Position detector for an electro hydraulic servo valve

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3595271A (en) * 1969-06-30 1971-07-27 Int Harvester Co Directional flow control valve with float and check valve structure
FR2484029A1 (en) * 1980-06-04 1981-12-11 Rexroth Sigma Double acting selector valve - has sliding cylinder moving across casing to connect operating cylinder to valve
US4958553A (en) * 1988-04-22 1990-09-25 Diesel Kiki Co., Ltd. Hydraulic controller
EP0816691A2 (en) * 1996-07-06 1998-01-07 Robert Bosch Gmbh Stop valve with pressure limitation
US20050011556A1 (en) * 2003-06-17 2005-01-20 Mariusz Dudzik Spool position detection for a hydraulic valve

Also Published As

Publication number Publication date
US8479768B2 (en) 2013-07-09
EP2280179A2 (en) 2011-02-02
EP2280179B1 (en) 2016-08-10
US20110017321A1 (en) 2011-01-27
DE102009034616A1 (en) 2011-02-03

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