DE102004014113A1 - Hydraulic valve assembly has pressure diversion valve between HP and LP connections and constructed as hydraulically piloted valve with control inlet connected to pilot valve controlled by pressure at load sensing connection - Google Patents

Hydraulic valve assembly has pressure diversion valve between HP and LP connections and constructed as hydraulically piloted valve with control inlet connected to pilot valve controlled by pressure at load sensing connection Download PDF

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Publication number
DE102004014113A1
DE102004014113A1 DE200410014113 DE102004014113A DE102004014113A1 DE 102004014113 A1 DE102004014113 A1 DE 102004014113A1 DE 200410014113 DE200410014113 DE 200410014113 DE 102004014113 A DE102004014113 A DE 102004014113A DE 102004014113 A1 DE102004014113 A1 DE 102004014113A1
Authority
DE
Germany
Prior art keywords
valve
pressure
load sensing
constructed
connections
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.)
Withdrawn
Application number
DE200410014113
Other languages
German (de)
Inventor
Siegfried Zenker
Thorkild Christensen
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.)
Danfoss Power Solutions ApS
Original Assignee
Sauer Danfoss ApS
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 Sauer Danfoss ApS filed Critical Sauer Danfoss ApS
Priority to DE200410014113 priority Critical patent/DE102004014113A1/en
Publication of DE102004014113A1 publication Critical patent/DE102004014113A1/en
Withdrawn legal-status Critical Current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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/14—Energy-recuperation means
    • 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
    • F15B2211/50536—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using unloading valves controlling the supply pressure by diverting fluid to the return line

Landscapes

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

Abstract

The hydraulic valve assembly has a high pressure connection, a low pressure connection, a load sensing connection, and a pressure diversion valve between the HP connection and LP connection. The pressure diversion valve is constructed as a hydraulically piloted valve with a control inlet (13) connected to a pilot valve (17) controlled by pressure at the load sensing connection (LS). The pilot valve has a delay device which effects a time delay with the opening of the pilot valve.
DE200410014113 2004-03-23 2004-03-23 Hydraulic valve assembly has pressure diversion valve between HP and LP connections and constructed as hydraulically piloted valve with control inlet connected to pilot valve controlled by pressure at load sensing connection Withdrawn DE102004014113A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE200410014113 DE102004014113A1 (en) 2004-03-23 2004-03-23 Hydraulic valve assembly has pressure diversion valve between HP and LP connections and constructed as hydraulically piloted valve with control inlet connected to pilot valve controlled by pressure at load sensing connection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200410014113 DE102004014113A1 (en) 2004-03-23 2004-03-23 Hydraulic valve assembly has pressure diversion valve between HP and LP connections and constructed as hydraulically piloted valve with control inlet connected to pilot valve controlled by pressure at load sensing connection

Publications (1)

Publication Number Publication Date
DE102004014113A1 true DE102004014113A1 (en) 2005-10-20

Family

ID=35033856

Family Applications (1)

Application Number Title Priority Date Filing Date
DE200410014113 Withdrawn DE102004014113A1 (en) 2004-03-23 2004-03-23 Hydraulic valve assembly has pressure diversion valve between HP and LP connections and constructed as hydraulically piloted valve with control inlet connected to pilot valve controlled by pressure at load sensing connection

Country Status (1)

Country Link
DE (1) DE102004014113A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007116035A1 (en) 2006-04-12 2007-10-18 Walvoil S.P.A. Pilot-operated differential-area pressure compensator and control system for piloting same
US7975598B2 (en) 2006-12-20 2011-07-12 Sauer-Danfoss Aps Hydraulic valve arrangement
EP4170188A1 (en) 2021-10-21 2023-04-26 Bucher Hydraulics S.p.A. Inlet section for use in a hydraulic distributor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3710699C1 (en) * 1987-03-31 1988-08-18 Heilmeier & Weinlein Hydraulic control device for a consumer group
DE10016026C2 (en) * 2000-03-31 2002-07-11 Sauer Danfoss Holding As Nordb Hydraulic line coupling arrangement

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3710699C1 (en) * 1987-03-31 1988-08-18 Heilmeier & Weinlein Hydraulic control device for a consumer group
DE10016026C2 (en) * 2000-03-31 2002-07-11 Sauer Danfoss Holding As Nordb Hydraulic line coupling arrangement

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007116035A1 (en) 2006-04-12 2007-10-18 Walvoil S.P.A. Pilot-operated differential-area pressure compensator and control system for piloting same
US7975598B2 (en) 2006-12-20 2011-07-12 Sauer-Danfoss Aps Hydraulic valve arrangement
US8528460B2 (en) 2006-12-20 2013-09-10 Sauer-Danfoss Aps Hydraulic valve arrangement
EP4170188A1 (en) 2021-10-21 2023-04-26 Bucher Hydraulics S.p.A. Inlet section for use in a hydraulic distributor
EP4279750A1 (en) 2021-10-21 2023-11-22 Bucher Hydraulics S.p.A. Inlet section for use in a hydraulic distributor
US11852249B2 (en) 2021-10-21 2023-12-26 Bucher Hydraulics S.P.A Inlet section for use in a hydraulic distributor

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee

Effective date: 20111001