IT1248514B - Sistema di valvole di controllo di tipo idraulico - Google Patents

Sistema di valvole di controllo di tipo idraulico

Info

Publication number
IT1248514B
IT1248514B ITMI911702A ITMI911702A IT1248514B IT 1248514 B IT1248514 B IT 1248514B IT MI911702 A ITMI911702 A IT MI911702A IT MI911702 A ITMI911702 A IT MI911702A IT 1248514 B IT1248514 B IT 1248514B
Authority
IT
Italy
Prior art keywords
valve
pressure
cylindrical chamber
receiving surface
control valve
Prior art date
Application number
ITMI911702A
Other languages
English (en)
Inventor
Rindo Morikawa
Yusuke Kajita
Genroku Sugiyama
Original Assignee
Zexel Corp
Hitachi Construction Machinery
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 Zexel Corp, Hitachi Construction Machinery filed Critical Zexel Corp
Publication of ITMI911702A1 publication Critical patent/ITMI911702A1/it
Application granted granted Critical
Publication of IT1248514B publication Critical patent/IT1248514B/it

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
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool 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
    • 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
    • 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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/08—Servomotor systems incorporating electrically operated control 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
    • F15B2211/20—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
    • F15B2211/30535—In combination with a pressure compensating valve the pressure compensating valve is arranged between pressure source and 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
    • F15B2211/50—Pressure control
    • F15B2211/57—Control of a differential pressure
    • 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/635—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements
    • F15B2211/6355—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements having valve 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders

Landscapes

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

Abstract

Sistema a valvole di controllo idraulico, per comandare una pluralità di azionatori idraulici per mezzo di una singola pompa, con inclusione di valvole di compensazione della pressione e di una valvola pilota disposta in una camera cilindrica verticale, ortogonale ad una camera cilindrica laterale di un corpo valvolare, in cui è montato un cassetto di una valvola di commutazione della direzione. Una camera di rilevamento del carico, per introdurre una pressione di carico di un azionatore, è formata in corrispondenza di una intersezione fra la camera cilindrica laterale e la camera cilindrica verticale. Una prima superficie di ricezione della pressione del lato di apertura della valvola di compensazione della pressione risulta contrapposta alla camera di rilevamento del carico. La valvola di compensazione della pressione presenta una seconda superficie di ricezione della pressione nelle vicinanze della prima superficie di ricezione del carico.
ITMI911702A 1990-06-22 1991-06-20 Sistema di valvole di controllo di tipo idraulico IT1248514B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2162772A JPH0758082B2 (ja) 1990-06-22 1990-06-22 油圧制御弁装置

Publications (2)

Publication Number Publication Date
ITMI911702A1 ITMI911702A1 (it) 1992-12-20
IT1248514B true IT1248514B (it) 1995-01-19

Family

ID=15760930

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI911702A IT1248514B (it) 1990-06-22 1991-06-20 Sistema di valvole di controllo di tipo idraulico

Country Status (3)

Country Link
US (1) US5161373A (it)
JP (1) JPH0758082B2 (it)
IT (1) IT1248514B (it)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5481872A (en) * 1991-11-25 1996-01-09 Kabushiki Kaisha Komatsu Seisakusho Hydraulic circuit for operating plural actuators and its pressure compensating valve and maximum load pressure detector
US5474142A (en) * 1993-04-19 1995-12-12 Bowden; Bobbie J. Automatic drilling system
US5579642A (en) * 1995-05-26 1996-12-03 Husco International, Inc. Pressure compensating hydraulic control system
US5715865A (en) * 1996-11-13 1998-02-10 Husco International, Inc. Pressure compensating hydraulic control valve system
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
US5950429A (en) * 1997-12-17 1999-09-14 Husco International, Inc. Hydraulic control valve system with load sensing priority
FR2787148B1 (fr) * 1998-12-09 2001-02-16 Mannesmann Rexroth Sa Distributeur hydraulique
DE19924473A1 (de) * 1999-05-28 2000-11-30 Mannesmann Rexroth Ag Hydraulischer Antrieb mit mehreren auch einen Differentialzylinder umfassenden hydraulischen Verbrauchern, insbesondere an einer Kunststoffspritzgießmaschine
ES2211268B1 (es) * 2002-02-11 2005-04-01 Carinox, S.A. Central de accionamiento para un sistema hidraulico de elevacion, para el montaje y desmontaje de tanques verticales.
JP4276491B2 (ja) * 2003-08-04 2009-06-10 日立建機株式会社 方向切換弁ブロック
US7854115B2 (en) * 2008-04-25 2010-12-21 Husco International, Inc. Post-pressure compensated hydraulic control valve with load sense pressure limiting
WO2011096001A1 (en) * 2010-02-02 2011-08-11 Bucher Hydraulics S.P.A. Hydraulic section for load sensing applications and multiple hydraulic distributor
CN102313044B (zh) * 2010-07-02 2013-02-13 上海立新液压有限公司 一种液控流量阀
CN102588373B (zh) * 2012-03-08 2015-02-18 长沙中联消防机械有限公司 工程机械及其支腿液压控制装置
CN103032415B (zh) * 2012-12-24 2015-05-20 长沙中联消防机械有限公司 液压装置和工程机械
CN105637153A (zh) * 2013-08-13 2016-06-01 沃尔沃建造设备有限公司 用于工程机械的流量控制阀
DE102013220748A1 (de) * 2013-10-15 2015-05-07 Robert Bosch Gmbh Ventilanordnung
JP6440451B2 (ja) * 2014-10-27 2018-12-19 Ｋｙｂ株式会社 ロードセンシングバルブ装置
JP6425500B2 (ja) * 2014-11-07 2018-11-21 Ｋｙｂ株式会社 ロードセンシングバルブ装置
CN108612709B (zh) * 2018-05-18 2019-09-27 大港油田广源(沧州)石油技术服务有限公司 一种液压驱动的往复式空压机
JP2022096795A (ja) * 2020-12-18 2022-06-30 川崎重工業株式会社 弁ユニットおよび弁装置
CN113494111B (zh) * 2021-07-27 2022-08-05 柳州柳工液压件有限公司 主控阀、定变量液压系统和装载机
CN115095696B (zh) * 2022-08-01 2024-05-24 太重集团榆次液压工业有限公司 一种大流量先导式压力补偿阀

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126795A (en) * 1964-03-31 -timed out
US4192346A (en) * 1976-08-25 1980-03-11 Shoketsu Kinzoku Kogyo Kabushiki Kaisha Control valve
US4129987A (en) * 1977-10-17 1978-12-19 Gresen Manufacturing Company Hydraulic control system
DE3321483A1 (de) * 1983-06-14 1984-12-20 Linde Ag, 6200 Wiesbaden Hydraulische einrichtung mit einer pumpe und mindestens zwei von dieser beaufschlagten verbrauchern hydraulischer energie
US4743629A (en) * 1987-07-02 1988-05-10 Becton, Dickinson And Company Crosslinked polyetherurethane membranes useful in blood electrolyte sensors
JPS6450201A (en) * 1987-08-21 1989-02-27 Sony Corp Rotary head drum mechanism
KR940008638B1 (ko) * 1988-07-08 1994-09-24 히다찌 겐끼 가부시기가이샤 건설기계의 유압구동장치
JPH0786361B2 (ja) * 1988-11-10 1995-09-20 株式会社ゼクセル 油圧制御弁

Also Published As

Publication number Publication date
ITMI911702A1 (it) 1992-12-20
US5161373A (en) 1992-11-10
JPH0454302A (ja) 1992-02-21
JPH0758082B2 (ja) 1995-06-21

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970628