ZA915152B - Load check and pressure compensating valve - Google Patents

Load check and pressure compensating valve

Info

Publication number
ZA915152B
ZA915152B ZA915152A ZA915152A ZA915152B ZA 915152 B ZA915152 B ZA 915152B ZA 915152 A ZA915152 A ZA 915152A ZA 915152 A ZA915152 A ZA 915152A ZA 915152 B ZA915152 B ZA 915152B
Authority
ZA
South Africa
Prior art keywords
pressure compensating
compensating valve
load check
check
load
Prior art date
Application number
ZA915152A
Other languages
English (en)
Inventor
Gene Richard St Germain
Richard St Germain Gene
Original Assignee
Caterpillar Inc
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 Caterpillar Inc filed Critical Caterpillar Inc
Publication of ZA915152B publication Critical patent/ZA915152B/xx

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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
    • F15B11/163—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load for sharing the pump output equally amongst users or groups of users, e.g. using anti-saturation, pressure compensation
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2221—Control of flow rate; Load sensing arrangements
    • E02F9/2225—Control of flow rate; Load sensing arrangements using pressure-compensating valves
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2296—Systems with a variable displacement pump
    • 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
    • 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
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20546—Type of pump variable capacity
    • F15B2211/20553—Type of pump variable capacity with pilot circuit, e.g. for controlling a swash plate
    • 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
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
    • F15B2211/3053—In combination with a pressure compensating valve
    • F15B2211/30555—Inlet and outlet of the pressure compensating valve being connected to the directional control 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
    • F15B2211/30—Directional control
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3105—Neutral or centre positions
    • F15B2211/3111—Neutral or centre positions the pump port being closed in the centre position, e.g. so-called closed centre
    • 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
    • F15B2211/30—Directional control
    • F15B2211/35—Directional control combined with flow control
    • F15B2211/351—Flow control by regulating means in feed line, i.e. meter-in control
    • 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/605—Load sensing circuits
    • F15B2211/6051—Load sensing circuits having valve means between output member and the load sensing circuit
    • F15B2211/6054—Load sensing circuits having valve means between output member and the load sensing circuit using shuttle 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/605—Load sensing circuits
    • F15B2211/6051—Load sensing circuits having valve means between output member and the load sensing circuit
    • F15B2211/6055—Load sensing circuits having valve means between output member and the load sensing circuit 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Hydraulic Control Valves For Brake Systems (AREA)
ZA915152A 1990-08-30 1991-07-03 Load check and pressure compensating valve ZA915152B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/574,864 US5067389A (en) 1990-08-30 1990-08-30 Load check and pressure compensating valve

Publications (1)

Publication Number Publication Date
ZA915152B true ZA915152B (en) 1992-04-29

Family

ID=24297962

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA915152A ZA915152B (en) 1990-08-30 1991-07-03 Load check and pressure compensating valve

Country Status (8)

Country Link
US (1) US5067389A (xx)
EP (1) EP0545925B1 (xx)
JP (1) JP3392861B2 (xx)
AU (1) AU646429B2 (xx)
CA (1) CA2088269A1 (xx)
DE (1) DE69019379T2 (xx)
WO (1) WO1992004544A1 (xx)
ZA (1) ZA915152B (xx)

Families Citing this family (38)

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WO1991002902A1 (en) * 1989-08-16 1991-03-07 Hitachi Construction Machinery Co., Ltd. Valve device and hydraulic circuit device
JP2568926B2 (ja) * 1990-01-18 1997-01-08 株式会社小松製作所 アタッチメントの流量切換え装置
EP0536398B1 (en) * 1990-05-15 1996-07-10 Kabushiki Kaisha Komatsu Seisakusho Hydraulic system
JPH0473403A (ja) * 1990-07-11 1992-03-09 Nabco Ltd 油圧回路
DE4036720C2 (de) * 1990-11-17 2001-09-13 Linde Ag Steuerschaltung für die lastunabhängige Aufteilung eines Druckmittelstromes
JP3124094B2 (ja) * 1991-12-25 2001-01-15 カヤバ工業株式会社 複数アクチュエータの制御装置
FR2689575B1 (fr) * 1992-04-06 1994-07-08 Rexroth Sigma Distributeur hydraulique a compensation de pression et une selection de pression maximale pour piloter une pompe et commande hydraulique multiple incluant de tels distributeurs.
US5241819A (en) * 1992-06-30 1993-09-07 Westinghouse Air Brake Company Tappet valve assembly for automatic railway vehicle couplers
US5454223A (en) * 1993-05-28 1995-10-03 Dana Corporation Hydraulic load sensing system with poppet valve having an orifice therein
US5435228A (en) * 1993-07-20 1995-07-25 Pneumatic Energy Inc Pneumatic transformer
US5353683A (en) * 1993-07-20 1994-10-11 Snitgen Joseph D Pneumatic transformer
DE4341244C2 (de) * 1993-12-03 1997-08-14 Orenstein & Koppel Ag Steuerung zur Aufteilung des durch mindestens eine Pumpe zur Verfügung gestellten Förderstromes bei Hydrauliksystemen auf mehrere Verbraucher
JP3491771B2 (ja) * 1994-03-15 2004-01-26 株式会社小松製作所 圧力補償弁及び圧油供給装置
ATE181755T1 (de) * 1995-03-24 1999-07-15 Orenstein & Koppel Ag Einrichtung zur lastdruckunabhängigen durchflussverteilung bei einem steuerschieber für mobile bau- und arbeitsmaschinen
US5579642A (en) * 1995-05-26 1996-12-03 Husco International, Inc. Pressure compensating hydraulic control system
US5699665A (en) * 1996-04-10 1997-12-23 Commercial Intertech Corp. Control system with induced load isolation and relief
US5791142A (en) * 1997-03-27 1998-08-11 Husco International, Inc. Hydraulic control valve system with split pressure compensator
US5878647A (en) * 1997-08-11 1999-03-09 Husco International Inc. Pilot solenoid control valve and hydraulic control system using same
US5890362A (en) * 1997-10-23 1999-04-06 Husco International, Inc. Hydraulic control valve system with non-shuttle pressure compensator
DE19804398A1 (de) * 1998-02-04 1999-08-05 Linde Ag Ventilanordnung für die Arbeitshydraulik eines Arbeitsfahrzeugs
DE19855187A1 (de) * 1998-11-30 2000-05-31 Mannesmann Rexroth Ag Verfahren und Steueranordnung zur Ansteuerung eines hydraulischen Verbrauchers
US6098403A (en) * 1999-03-17 2000-08-08 Husco International, Inc. Hydraulic control valve system with pressure compensator
US6318079B1 (en) 2000-08-08 2001-11-20 Husco International, Inc. Hydraulic control valve system with pressure compensated flow control
US6644335B2 (en) * 2000-12-15 2003-11-11 Caterpillar S.A.R.L. Precision orificing for pilot operated control valves
US6745564B2 (en) * 2001-12-21 2004-06-08 Volvo Construction Equipment Holding Sweden Ab Hydraulic variable control apparatus for heavy construction equipment
US6782697B2 (en) 2001-12-28 2004-08-31 Caterpillar Inc. Pressure-compensating valve with load check
DE10219717B3 (de) * 2002-05-02 2004-02-05 Sauer-Danfoss (Nordborg) A/S Hydraulische Ventilanordnung
US6761027B2 (en) * 2002-06-27 2004-07-13 Caterpillar Inc Pressure-compensated hydraulic circuit with regeneration
DE10325296A1 (de) * 2003-06-04 2004-12-23 Bosch Rexroth Ag Hydraulische Steueranordnung
DE102006049584A1 (de) 2006-03-13 2007-09-20 Robert Bosch Gmbh LUDV-Ventilanordnung
JP5283862B2 (ja) * 2007-06-05 2013-09-04 三陽機器株式会社 油圧制御装置
US7854115B2 (en) * 2008-04-25 2010-12-21 Husco International, Inc. Post-pressure compensated hydraulic control valve with load sense pressure limiting
US20140069091A1 (en) * 2011-03-17 2014-03-13 Parker Hannifin Corporation Electro-hydraulic system for controlling multiple functions
US9003786B2 (en) * 2011-05-10 2015-04-14 Caterpillar Inc. Pressure limiting in hydraulic systems
US10246942B2 (en) 2013-09-13 2019-04-02 Oilpath Hydraulics Pty Ltd Hyraulic motor circuit
WO2015094142A1 (en) * 2013-12-17 2015-06-25 Hema Endüstri̇ Anoni̇m Şi̇rketi̇ A valve system which holds load and which equalizes pressure in hydraulic fixtures
FR3054008B1 (fr) * 2016-07-13 2019-05-10 Robert Bosch Gmbh Installation de distributeur hydraulique equipee d'un absorbeur de chocs de pression
CN114906368B (zh) * 2022-07-19 2022-09-09 卡松科技股份有限公司 一种润滑油智能调和系统的灌装计量装置及其平衡阀

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Also Published As

Publication number Publication date
JP3392861B2 (ja) 2003-03-31
AU7172791A (en) 1992-03-30
JPH05509376A (ja) 1993-12-22
WO1992004544A1 (en) 1992-03-19
US5067389A (en) 1991-11-26
DE69019379D1 (de) 1995-06-14
EP0545925A1 (en) 1993-06-16
CA2088269A1 (en) 1992-03-01
AU646429B2 (en) 1994-02-24
DE69019379T2 (de) 1996-02-22
EP0545925B1 (en) 1995-05-10

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