WO2013087156A3 - Pressure limiting valve and closed hydraulic circuit having a pressure limiting valve - Google Patents

Pressure limiting valve and closed hydraulic circuit having a pressure limiting valve Download PDF

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Publication number
WO2013087156A3
WO2013087156A3 PCT/EP2012/004996 EP2012004996W WO2013087156A3 WO 2013087156 A3 WO2013087156 A3 WO 2013087156A3 EP 2012004996 W EP2012004996 W EP 2012004996W WO 2013087156 A3 WO2013087156 A3 WO 2013087156A3
Authority
WO
WIPO (PCT)
Prior art keywords
pressure limiting
limiting valve
control
pressure
hydraulic circuit
Prior art date
Application number
PCT/EP2012/004996
Other languages
German (de)
French (fr)
Other versions
WO2013087156A2 (en
Inventor
Hakan Camurdan
Robert Wanner
Jürgen GINTER
Dirk Van Aalst
Markus GEPRÄGS
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 WO2013087156A2 publication Critical patent/WO2013087156A2/en
Publication of WO2013087156A3 publication Critical patent/WO2013087156A3/en

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
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/024—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
    • F15B2211/505—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
    • F15B2211/52—Pressure control characterised by the type of actuation
    • F15B2211/528—Pressure 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
    • F15B2211/50—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
    • F15B2211/50—Pressure control
    • F15B2211/575—Pilot pressure control
    • F15B2211/5756—Pilot pressure control for opening a valve

Landscapes

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

Abstract

Disclosed is a pressure limiting valve arrangement having a pressure limiting valve, preferably a low-pressure limiting valve, having a valve body, onto the first control surface of which a system pressure to be limited is applied in the opening direction, e.g. via a first control line or via a first control connection. In addition, the pressure limiting valve has a spring via which the valve body is pressurised in the closing direction. According to the invention, the valve body has a second control surface onto which system pressure can be applied via a second control line or a second control connection. The system pressure can also act on the second control surface to a reduced or throttled extent. A closed hydraulic circuit with two working lines, into which a feed pump can convey a substitute pressurising agent to make up a shortfall via a supply line, is also disclosed. The supply line can be relieved with various response pressures via a pressure limiting valve arrangement of the type described above.
PCT/EP2012/004996 2011-12-14 2012-12-04 Pressure limiting valve and closed hydraulic circuit having a pressure limiting valve WO2013087156A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201110121052 DE102011121052A1 (en) 2011-12-14 2011-12-14 Pressure relief valve and closed hydraulic circuit with a pressure relief valve
DE102011121052.4 2011-12-14

Publications (2)

Publication Number Publication Date
WO2013087156A2 WO2013087156A2 (en) 2013-06-20
WO2013087156A3 true WO2013087156A3 (en) 2013-08-08

Family

ID=47424888

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/004996 WO2013087156A2 (en) 2011-12-14 2012-12-04 Pressure limiting valve and closed hydraulic circuit having a pressure limiting valve

Country Status (2)

Country Link
DE (1) DE102011121052A1 (en)
WO (1) WO2013087156A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020210093A1 (en) 2020-08-10 2022-02-10 Robert Bosch Gesellschaft mit beschränkter Haftung Hydraulic drive in front of a drilling device
DE102022210469A1 (en) 2022-10-04 2024-04-04 Robert Bosch Gesellschaft mit beschränkter Haftung Pressure relief valve arrangement, modular pressure relief valve arrangement and hydraulic control arrangement with such a pressure relief valve arrangement
CN116357776B (en) * 2023-06-02 2023-08-01 太原理工大学 Three-way speed regulating valve for hydraulic support

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19640545A1 (en) * 1996-10-01 1998-04-02 Zahnradfabrik Friedrichshafen Hydrostatic drive for drum of mobile concrete mixer
EP2241764A1 (en) * 2009-04-17 2010-10-20 HAWE Hydraulik SE Seat valve with circulating valve and pressure scale function
EP2375083A2 (en) * 2010-04-07 2011-10-12 Aisin Seiki Kabushiki Kaisha Relief valve

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004057740C5 (en) 2004-11-30 2008-09-11 Brueninghaus Hydromatik Gmbh Hydraulic circuit with feed pump

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19640545A1 (en) * 1996-10-01 1998-04-02 Zahnradfabrik Friedrichshafen Hydrostatic drive for drum of mobile concrete mixer
EP2241764A1 (en) * 2009-04-17 2010-10-20 HAWE Hydraulik SE Seat valve with circulating valve and pressure scale function
EP2375083A2 (en) * 2010-04-07 2011-10-12 Aisin Seiki Kabushiki Kaisha Relief valve

Also Published As

Publication number Publication date
WO2013087156A2 (en) 2013-06-20
DE102011121052A1 (en) 2013-06-20

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