GB1386971A - Pressure compensated control valve - Google Patents

Pressure compensated control valve

Info

Publication number
GB1386971A
GB1386971A GB812572A GB812572A GB1386971A GB 1386971 A GB1386971 A GB 1386971A GB 812572 A GB812572 A GB 812572A GB 812572 A GB812572 A GB 812572A GB 1386971 A GB1386971 A GB 1386971A
Authority
GB
United Kingdom
Prior art keywords
valve
spool
inlet
fluid
line
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.)
Expired
Application number
GB812572A
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.)
HYDRAULIC INDUSTRIES
Original Assignee
HYDRAULIC INDUSTRIES
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 HYDRAULIC INDUSTRIES filed Critical HYDRAULIC INDUSTRIES
Publication of GB1386971A publication Critical patent/GB1386971A/en
Expired 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
    • 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
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F15B13/08—Assemblies of units, each for the control of a single servomotor only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
    • 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
    • Y10T137/5109—Convertible
    • Y10T137/5283—Units interchangeable between alternate locations
    • 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
    • Y10T137/87177—With bypass
    • 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
    • Y10T137/87177—With bypass
    • Y10T137/87185—Controlled by supply or exhaust valve

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Safety Valves (AREA)
  • Multiple-Way Valves (AREA)
  • Mechanically-Actuated Valves (AREA)

Abstract

1386971 Valves HYDRAULIC INDUSTRIES Inc 22 Feb 1972 [2 Nov 1971] 8125/72 Heading F2V A reversing valve comprising a spool 24 slidable in a bore for directing fluid from an inlet passage to one of two work ports 27, 28 is provided with a pressure regulating valve 26 in the inlet passage which is actuated by the pressure differential between the portions 31, 33 of the fluid passage from inlet to work port on either side of the spool valve and with an unloading valve 50 between the inlet and a return port which is open when the spool valve is in its neutral position and closes when the spool valve moves to an operating position. The unloading valve is held closed by the inlet fluid in the chamber 58 which is vented by the spool valve through line 65 when required to open. The separate unloading valve enables springs of more suitable strength to be used in the unloading and spool valves. A plurality of spool valves with corresponding pressure regulating valves are shown in Fig. 2 in series with one unloading valve. Lines are arranged such that adjacent flat sides of the various units provide the necessary interconnection. A check valve 34 is provided downstream of the portion 33 of each fluid passage. A line with a check valve may also be provided from the chamber 58 to the fluid passage ports on 31. In a particular "idling" position of the valve spool, the two motor ports may be connected with each other and with a low pressure passage L2 for return fluid. The plungers P in the pressure regulating valves shown in Fig. 2 are all of the priority type which can block fluid flow to the next unit. However, plungers of the parallel type which can never block the flow to the next unit can be used. In Fig. 2 the input line L1 eventually connects to the return line L2. However, the line L1 may be dead-ended. The spool (Fig. 11, not shown) may be provided with internal passages which provide the same connections as aforesaid to operate the valve. A valve 92 and a low pressure relief valve 87 are also provided in the assembly to connect the lines 16, L2 with the inlet 16 and a reservoir, respectively.
GB812572A 1971-11-02 1972-02-22 Pressure compensated control valve Expired GB1386971A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19482571A 1971-11-02 1971-11-02

Publications (1)

Publication Number Publication Date
GB1386971A true GB1386971A (en) 1975-03-12

Family

ID=22719038

Family Applications (5)

Application Number Title Priority Date Filing Date
GB539774A Expired GB1386972A (en) 1971-11-02 1972-02-22 Valves for controlling flow of pressure fluid
GB550074A Expired GB1386974A (en) 1971-11-02 1972-02-22 Stop mechanism for fluid flow control valves
GB812572A Expired GB1386971A (en) 1971-11-02 1972-02-22 Pressure compensated control valve
GB3851274A Expired GB1386975A (en) 1971-11-02 1972-02-22 Hydraulic control valve
GB549974A Expired GB1386973A (en) 1971-11-02 1972-02-22 Control valve mechanism

Family Applications Before (2)

Application Number Title Priority Date Filing Date
GB539774A Expired GB1386972A (en) 1971-11-02 1972-02-22 Valves for controlling flow of pressure fluid
GB550074A Expired GB1386974A (en) 1971-11-02 1972-02-22 Stop mechanism for fluid flow control valves

Family Applications After (2)

Application Number Title Priority Date Filing Date
GB3851274A Expired GB1386975A (en) 1971-11-02 1972-02-22 Hydraulic control valve
GB549974A Expired GB1386973A (en) 1971-11-02 1972-02-22 Control valve mechanism

Country Status (4)

Country Link
US (1) US3722543A (en)
JP (3) JPS587844B2 (en)
DE (1) DE2252772A1 (en)
GB (5) GB1386972A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108953684A (en) * 2018-07-16 2018-12-07 中国科学院力学研究所 A kind of more valve positions of hydraulic control and multithread to controllable triple valve

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US3818936A (en) * 1972-06-15 1974-06-25 Monarch Road Machinery Co Hydraulic control valve
DE2303286C2 (en) * 1973-01-24 1982-03-11 Robert Bosch Gmbh, 7000 Stuttgart Hydraulic control device
US3991787A (en) * 1973-02-21 1976-11-16 Caterpillar Tractor Co. Modulation control valve for hydraulically operated winch
JPS5642763B2 (en) * 1973-04-11 1981-10-07
US3874405A (en) * 1973-08-24 1975-04-01 Moog Inc Multiple tow-stage electrohydraulic servovalve apparatus
US3878679A (en) * 1973-08-30 1975-04-22 Gen Signal Corp Compensated multi-function hydraulic system
US3934742A (en) * 1973-12-26 1976-01-27 Hydraulic Industries, Inc. Valve mechanism for automatic control of a number of fluid motors
US4062374A (en) * 1974-05-08 1977-12-13 Sperry Rand Limited Hydraulic valves and hydraulic systems
US3937129A (en) * 1974-10-23 1976-02-10 The Scott & Fetzer Company Load responsive system with area change flow extender
US3980095A (en) * 1975-02-10 1976-09-14 Mcavoy Dennis J Power transmission
DE2506923C3 (en) * 1975-02-19 1983-01-27 Heilmeier & Weinlein Fabrik für Oel-Hydraulik GmbH & Co KG, 8000 München Valve device
US4122677A (en) * 1975-03-19 1978-10-31 Tadeusz Budzich Load responsive valve assemblies
US4058140A (en) * 1975-03-19 1977-11-15 Tadeusz Budzich Load responsive fluid control valves
US3989062A (en) * 1975-05-09 1976-11-02 Hydraulic Industries, Inc. Source fluid supply and pressure control system for hydraulic motors
US4036245A (en) * 1975-12-29 1977-07-19 Sundstrand Corporation Pressure compensated hydraulic control valve
FR2346582A1 (en) * 1976-04-02 1977-10-28 Bouteille Daniel PERFECTED DISTRIBUTION DEVICE FOR PNEUMATIC INSTALLATION
US4022022A (en) * 1976-04-26 1977-05-10 Parker-Hannifin Corporation Hydraulic system and control valve assembly therefor
US4165761A (en) * 1976-07-27 1979-08-28 Tadeusz Budzich Load responsive fluid control valves
US4140152A (en) * 1976-08-20 1979-02-20 Tadeusz Budzich Load responsive valve assemblies
DE2701509C2 (en) * 1977-01-15 1985-10-31 Robert Bosch Gmbh, 7000 Stuttgart Hydraulic control device for at least two hydraulic consumers
US4215720A (en) * 1978-10-02 1980-08-05 General Signal Corporation Fluid control valve system
DE3308576A1 (en) * 1983-03-10 1984-09-13 Heilmeier & Weinlein Fabrik für Oel-Hydraulik GmbH & Co KG, 8000 München CONTROL VALVE DEVICE
EP0135751B1 (en) * 1983-09-20 1986-12-03 HEILMEIER & WEINLEIN Fabrik für Oel-Hydraulik GmbH & Co. KG Hydraulic device
JPS6129171U (en) * 1984-07-25 1986-02-21 内田油圧機器工業株式会社 Pressure selection device in multiple valves
JPS6129170U (en) * 1984-07-25 1986-02-21 内田油圧機器工業株式会社 Pressure selection device in multiple valves
US4694858A (en) * 1984-12-19 1987-09-22 General Signal Corporation Hydraulic control valve
DE3505623A1 (en) * 1985-02-19 1986-08-21 Robert Bosch Gmbh, 7000 Stuttgart HYDRAULIC DIRECTION VALVE FOR A LOAD PRESSURE COMPENSATED CONTROL
DE3603811C2 (en) * 1986-02-07 1995-12-21 Bosch Gmbh Robert Hydraulic directional valve
DE3634728A1 (en) * 1986-10-11 1988-04-21 Rexroth Mannesmann Gmbh VALVE ARRANGEMENT FOR LOAD-INDEPENDENT CONTROL OF SEVERAL SIMPLY ACTUATED HYDRAULIC CONSUMERS
US5368061A (en) * 1987-01-29 1994-11-29 Mollo; James R. Load sensed variable discharge fixed displacement pump control with low unload features
US5487403A (en) * 1987-01-29 1996-01-30 Mollo; James R. Variable discharge pump with low unload to secondary
US5515879A (en) * 1987-01-29 1996-05-14 Mollo; James R. Load sensed multi-purpose pressure control valve
US4757685A (en) * 1987-08-24 1988-07-19 Caterpillar Inc. Pressure responsive hydraulic control circuit
US4889161A (en) * 1987-10-02 1989-12-26 Applied Power Inc. Compensated individual segment flow regulator
EP0433665B1 (en) * 1989-12-19 1994-02-23 Robert Bosch Gmbh Hydraulic control valve
DE4133892C1 (en) * 1991-10-12 1992-12-24 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De
EP0747601B1 (en) * 1992-10-23 2000-04-12 Kabushiki Kaisha Komatsu Seisakusho Pressure oil supply system having a pressure compensating valve
JP3534319B2 (en) * 1993-12-22 2004-06-07 株式会社小松製作所 Unloading device used for hydraulic circuit
US6209580B1 (en) * 1999-12-14 2001-04-03 Raymond Keith Foster Multifunction valve assembly
US6868672B2 (en) * 2003-05-13 2005-03-22 Sauer-Danfoss, Inc. Method of controlling a swinging boom and apparatus for controlling the same
US7059126B2 (en) * 2003-10-16 2006-06-13 Caterpillar Inc. System for preventing swing wag for a work machine with a boom assembly
EP1860327B1 (en) * 2006-05-26 2009-12-02 Hydrocontrol S.p.A. Pressure-compensating directional control valve
JP5498858B2 (en) * 2010-05-27 2014-05-21 日立建機株式会社 Wheel loader
US9410560B2 (en) 2012-06-01 2016-08-09 Clark Equipment Company Control valve assembly
JP6338428B2 (en) * 2014-04-11 2018-06-06 Ｋｙｂ株式会社 Valve structure
DE102014216033A1 (en) * 2014-08-13 2016-02-18 Robert Bosch Gmbh Adjustable valve end stop with fluid channel during operation
CN104265712B (en) * 2014-09-23 2016-04-27 徐州重型机械有限公司 A kind of wheeled crane and single cylinder bolt system extension and contraction control valve thereof
JP6643913B2 (en) * 2016-02-16 2020-02-12 株式会社クボタ Hydraulic block

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3455210A (en) * 1966-10-26 1969-07-15 Eaton Yale & Towne Adjustable,metered,directional flow control arrangement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108953684A (en) * 2018-07-16 2018-12-07 中国科学院力学研究所 A kind of more valve positions of hydraulic control and multithread to controllable triple valve
CN108953684B (en) * 2018-07-16 2020-06-05 中国科学院力学研究所 Controllable three-way valve with multiple hydraulically-controlled valve positions and multiple flow directions

Also Published As

Publication number Publication date
JPS53112381A (en) 1978-09-30
GB1386973A (en) 1975-03-12
JPS4853320A (en) 1973-07-26
DE2252772A1 (en) 1973-05-10
GB1386975A (en) 1975-03-12
US3722543A (en) 1973-03-27
JPS53112382A (en) 1978-09-30
JPS587844B2 (en) 1983-02-12
GB1386974A (en) 1975-03-12
GB1386972A (en) 1975-03-12

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLE Entries relating assignments, transmissions, licences in the register of patents
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee