SE8803181D0 - HYDRAULIC DRIVING SYSTEM WITH A PRIORITY FUNCTION FOR HYDRAULIC MOTORS - Google Patents

HYDRAULIC DRIVING SYSTEM WITH A PRIORITY FUNCTION FOR HYDRAULIC MOTORS

Info

Publication number
SE8803181D0
SE8803181D0 SE8803181A SE8803181A SE8803181D0 SE 8803181 D0 SE8803181 D0 SE 8803181D0 SE 8803181 A SE8803181 A SE 8803181A SE 8803181 A SE8803181 A SE 8803181A SE 8803181 D0 SE8803181 D0 SE 8803181D0
Authority
SE
Sweden
Prior art keywords
hydraulic
pressure
directional valve
flow
difference delta
Prior art date
Application number
SE8803181A
Other languages
Swedish (sv)
Inventor
L Sonsterod
Original Assignee
Atlas Copco Ab
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 Atlas Copco Ab filed Critical Atlas Copco Ab
Priority to SE8803181A priority Critical patent/SE8803181D0/en
Publication of SE8803181D0 publication Critical patent/SE8803181D0/en
Priority to PCT/SE1989/000479 priority patent/WO1990002882A1/en

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

Hydraulic driving system with a priority function for hydraulic motors (1, 2, 206, 206') and including a source (3, 208) for pressure fluid regulated by the load pressure and normally giving a supply pressure (Pp) normally exceeding the highest load pressure (PL) with a predetermined pressure difference DELTA P1, a reservoir (26), a directional valve (4) with a directional valve section (5', 5'', 205, 205') for each motor (1, 2) and flow regulating elements (7', 7'', 8) whose regulating position preferably is balanced and determined by means of a control pressure and/or spring means and which regulate the hydraulic flow to a respective motor (1, 2), said directional valve (4) and said source (3, 208) for pressure fluid being connected to said reservoir (26). A hydraulic circuit (9', 9'') is being associated with at least one of said flow regulating elements (7', 7'', 8), said hydraulic circuit changing the equilibrium of the flow regulation via the flow regulating elements (7', 7'', 8) in proportion to a decrease in said pressure difference DELTA P1 if this pressure difference DELTA P1 sinks below a predetermined level.
SE8803181A 1988-09-09 1988-09-09 HYDRAULIC DRIVING SYSTEM WITH A PRIORITY FUNCTION FOR HYDRAULIC MOTORS SE8803181D0 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE8803181A SE8803181D0 (en) 1988-09-09 1988-09-09 HYDRAULIC DRIVING SYSTEM WITH A PRIORITY FUNCTION FOR HYDRAULIC MOTORS
PCT/SE1989/000479 WO1990002882A1 (en) 1988-09-09 1989-09-08 Hydraulic driving system with a priority function for hydraulic motors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8803181A SE8803181D0 (en) 1988-09-09 1988-09-09 HYDRAULIC DRIVING SYSTEM WITH A PRIORITY FUNCTION FOR HYDRAULIC MOTORS

Publications (1)

Publication Number Publication Date
SE8803181D0 true SE8803181D0 (en) 1988-09-09

Family

ID=20373280

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8803181A SE8803181D0 (en) 1988-09-09 1988-09-09 HYDRAULIC DRIVING SYSTEM WITH A PRIORITY FUNCTION FOR HYDRAULIC MOTORS

Country Status (2)

Country Link
SE (1) SE8803181D0 (en)
WO (1) WO1990002882A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK0515608T3 (en) * 1990-12-15 1995-06-12 Barmag Barmer Maschf Hydraulic System
JPH05504820A (en) * 1990-12-15 1993-07-22 バルマーク　アクチエンゲゼルシヤフト hydraulic system
DE69229966T2 (en) * 1991-12-25 2000-03-09 Kayaba Industry Co Ltd Hydraulic control device compensated for load pressure
DE4243973C1 (en) * 1992-12-23 1994-07-07 Heilmeier & Weinlein Hydraulic control device
KR970045660A (en) * 1995-12-30 1997-07-26 석진철 Hydraulic system for skid steer loader
DE29611525U1 (en) 1996-07-02 1996-09-05 Heilmeier & Weinlein Fabrik für Oel-Hydraulik GmbH & Co KG, 81673 München Hydraulic control device
DE29611526U1 (en) * 1996-07-02 1996-09-05 Heilmeier & Weinlein Fabrik für Oel-Hydraulik GmbH & Co KG, 81673 München Hydraulic control device
JP3545626B2 (en) * 1999-02-04 2004-07-21 新キャタピラー三菱株式会社 Hydraulic oil supply control device
FR2807118B1 (en) * 2000-03-28 2002-07-05 Mannesmann Rexroth Sa HYDRAULIC CIRCUIT FOR OPERATING MULTIPLE HYDRAULIC RECEIVERS
DE10219717B3 (en) * 2002-05-02 2004-02-05 Sauer-Danfoss (Nordborg) A/S Hydraulic valve arrangement
KR20140050005A (en) * 2011-07-12 2014-04-28 볼보 컨스트럭션 이큅먼트 에이비 Flow control valve for construction machinery

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3987623A (en) * 1976-01-23 1976-10-26 Caterpillar Tractor Co. Controlled priority fluid system of a crawler type vehicle
US3987622A (en) * 1976-02-02 1976-10-26 Caterpillar Tractor Co. Load controlled fluid system having parallel work elements
DE3321483A1 (en) * 1983-06-14 1984-12-20 Linde Ag, 6200 Wiesbaden HYDRAULIC DEVICE WITH ONE PUMP AND AT LEAST TWO OF THESE INACTED CONSUMERS OF HYDRAULIC ENERGY
DE3532816A1 (en) * 1985-09-13 1987-03-26 Rexroth Mannesmann Gmbh CONTROL ARRANGEMENT FOR AT LEAST TWO HYDRAULIC CONSUMERS SUPPLIED BY AT LEAST ONE PUMP
US4712376A (en) * 1986-10-22 1987-12-15 Caterpillar Inc. Proportional valve control apparatus for fluid systems
DE3644745A1 (en) * 1986-12-30 1988-07-14 Rexroth Mannesmann Gmbh CONTROL ARRANGEMENT FOR AT LEAST TWO HYDRAULIC CONSUMERS SUPPLIED BY AT LEAST ONE PUMP

Also Published As

Publication number Publication date
WO1990002882A1 (en) 1990-03-22

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