WO2002090778A3 - Hydraulic control assembly comprising a directional control valve for controlling the direction and speed of a single-action hydraulic consumer - Google Patents

Hydraulic control assembly comprising a directional control valve for controlling the direction and speed of a single-action hydraulic consumer Download PDF

Info

Publication number
WO2002090778A3
WO2002090778A3 PCT/EP2002/004022 EP0204022W WO02090778A3 WO 2002090778 A3 WO2002090778 A3 WO 2002090778A3 EP 0204022 W EP0204022 W EP 0204022W WO 02090778 A3 WO02090778 A3 WO 02090778A3
Authority
WO
WIPO (PCT)
Prior art keywords
consumer
hydraulic
load pressure
speed
control valve
Prior art date
Application number
PCT/EP2002/004022
Other languages
German (de)
French (fr)
Other versions
WO2002090778A2 (en
Inventor
Peter Buettner
Tatu Miikkulainen
Original Assignee
Bosch Rexroth Ag
Peter Buettner
Tatu Miikkulainen
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 Bosch Rexroth Ag, Peter Buettner, Tatu Miikkulainen filed Critical Bosch Rexroth Ag
Priority to DE50205586T priority Critical patent/DE50205586D1/en
Priority to EP02742885A priority patent/EP1386084B1/en
Publication of WO2002090778A2 publication Critical patent/WO2002090778A2/en
Publication of WO2002090778A3 publication Critical patent/WO2002090778A3/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
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0416—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor with means or adapted for load sensing
    • F15B13/0417—Load sensing elements; Internal fluid connections therefor; Anti-saturation or pressure-compensation valves
    • F15B13/0418—Load sensing elements sliding within a hollow main valve spool
    • 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
    • F15B2013/002—Modular valves, i.e. consisting of an assembly of interchangeable components
    • F15B2013/006—Modular components with multiple uses, e.g. kits for either normally-open or normally-closed valves, interchangeable or reprogrammable manifolds

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Multiple-Way Valves (AREA)
  • Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)
  • Servomotors (AREA)

Abstract

The aim of the invention is to improve a hydraulic control assembly comprising a directional control valve that can be proportionally adjusted, in such a way that even for a single-action hydraulic cylinder a significant increase in the lowering speed of the hydraulic consumer is prevented as the load pressure accumulates, in a simple manner. To achieve this, a measuring piston (82) can be subjected to a pressure prevailing in a first consumer chamber (38) during a displacement of a control piston (32) in the second direction. During the lowering operation, the load pressure prevailing in the first consumer chamber thus impinges on the measuring piston. The compensatory force thus created increases with the accumulating load pressure and displaces the control piston to reduce the flow rate cross-section between the first consumer chamber and the outlet chamber (44). A pressure differential, which increases by means of an accumulating load pressure can therefore be partially or wholly compensated, or even overcompensated by the reduction of the flow rate cross-section, thus limiting the lowering speed.
PCT/EP2002/004022 2001-05-05 2002-04-11 Hydraulic control assembly comprising a directional control valve for controlling the direction and speed of a single-action hydraulic consumer WO2002090778A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE50205586T DE50205586D1 (en) 2001-05-05 2002-04-11 HYDRAULIC CONTROL ARRANGEMENT WITH A VALVE FOR CONTROLLING A SIMPLE HYDRAULIC CONSUMER AS REGARDS DIRECTION AND SPEED
EP02742885A EP1386084B1 (en) 2001-05-05 2002-04-11 Hydraulic control assembly for controlling the direction and speed of a single-action hydraulic consumer and a directional control valve therefor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10121924.5 2001-05-05
DE10121924A DE10121924A1 (en) 2001-05-05 2001-05-05 Hydraulic control arrangement for controlling a single-acting hydraulic consumer with regard to direction and speed and directional valve therefor

Publications (2)

Publication Number Publication Date
WO2002090778A2 WO2002090778A2 (en) 2002-11-14
WO2002090778A3 true WO2002090778A3 (en) 2003-02-20

Family

ID=7683762

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/004022 WO2002090778A2 (en) 2001-05-05 2002-04-11 Hydraulic control assembly comprising a directional control valve for controlling the direction and speed of a single-action hydraulic consumer

Country Status (5)

Country Link
EP (1) EP1386084B1 (en)
AT (1) ATE315728T1 (en)
DE (2) DE10121924A1 (en)
DK (1) DK1386084T3 (en)
WO (1) WO2002090778A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2311686A1 (en) * 2009-10-15 2011-04-20 Hyva International B.V. Tip valve
FI20115108L (en) * 2011-02-03 2012-08-04 Parker Hannifin Mfg Finland Oy Directional valve with pressure control
DE102011120302A1 (en) * 2011-12-03 2013-06-06 Robert Bosch Gmbh Hydraulic directional control valve for the hoist of an agricultural vehicle
DE102013017093A1 (en) 2013-10-15 2015-04-16 Hydac Filtertechnik Gmbh control device
CN105570220B (en) 2014-10-17 2017-08-11 徐工集团工程机械股份有限公司 Banked direction control valves and hydraulic flow shared system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19631803A1 (en) * 1996-08-07 1998-02-12 Rexroth Mannesmann Gmbh Hydraulic control device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19631803A1 (en) * 1996-08-07 1998-02-12 Rexroth Mannesmann Gmbh Hydraulic control device

Also Published As

Publication number Publication date
DK1386084T3 (en) 2006-05-22
DE10121924A1 (en) 2002-11-07
DE50205586D1 (en) 2006-04-06
EP1386084A2 (en) 2004-02-04
ATE315728T1 (en) 2006-02-15
EP1386084B1 (en) 2006-01-11
WO2002090778A2 (en) 2002-11-14

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