JPS5635806A - Compound oil pressure circuit - Google Patents

Compound oil pressure circuit

Info

Publication number
JPS5635806A
JPS5635806A JP11183079A JP11183079A JPS5635806A JP S5635806 A JPS5635806 A JP S5635806A JP 11183079 A JP11183079 A JP 11183079A JP 11183079 A JP11183079 A JP 11183079A JP S5635806 A JPS5635806 A JP S5635806A
Authority
JP
Japan
Prior art keywords
double acting
acting cylinder
check valve
pressure
circulation mechanism
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.)
Granted
Application number
JP11183079A
Other languages
English (en)
Other versions
JPH0236803B2 (ja
Inventor
Masahiro Yano
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.)
Sanyo Kiki Co Ltd
Original Assignee
Sanyo Kiki Co Ltd
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 Sanyo Kiki Co Ltd filed Critical Sanyo Kiki Co Ltd
Priority to JP11183079A priority Critical patent/JPS5635806A/ja
Priority to GB8027410A priority patent/GB2057580B/en
Priority to IT49568/80A priority patent/IT1146195B/it
Priority to US06/182,073 priority patent/US4622886A/en
Priority to FR8018844A priority patent/FR2464392A1/fr
Priority to CA000359383A priority patent/CA1146447A/en
Priority to DE3032596A priority patent/DE3032596C2/de
Publication of JPS5635806A publication Critical patent/JPS5635806A/ja
Priority to US06/308,905 priority patent/US4635532A/en
Publication of JPH0236803B2 publication Critical patent/JPH0236803B2/ja
Granted legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
    • E02F3/43—Control of dipper or bucket position; Control of sequence of drive operations
    • E02F3/431—Control of dipper or bucket position; Control of sequence of drive operations for bucket-arms, front-end loaders, dumpers or the like
    • E02F3/432—Control of dipper or bucket position; Control of sequence of drive operations for bucket-arms, front-end loaders, dumpers or the like for keeping the bucket in a predetermined position or attitude
    • E02F3/433—Control of dipper or bucket position; Control of sequence of drive operations for bucket-arms, front-end loaders, dumpers or the like for keeping the bucket in a predetermined position or attitude horizontal, e.g. self-levelling
    • 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
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/024—Systems essentially incorporating special features for controlling the speed or actuating force of an output member by means of differential connection of the servomotor lines, e.g. regenerative circuits
    • 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
    • F15B11/20—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors controlling several interacting or sequentially-operating members
    • 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
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/024—Systems essentially incorporating special features for controlling the speed or actuating force of an output member by means of differential connection of the servomotor lines, e.g. regenerative circuits
    • F15B2011/0243—Systems essentially incorporating special features for controlling the speed or actuating force of an output member by means of differential connection of the servomotor lines, e.g. regenerative circuits the regenerative circuit being activated or deactivated automatically
    • 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
    • F15B2211/20507—Type of prime mover
    • F15B2211/20523—Internal combustion engine
    • 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
    • F15B2211/30505—Non-return valves, i.e. check 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
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
    • 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
    • F15B2211/3056—Assemblies of multiple valves
    • F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve
    • F15B2211/3058—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve having additional valves for interconnecting the fluid chambers of a double-acting actuator, e.g. for regeneration mode or for floating mode
    • 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
    • F15B2211/3116—Neutral or centre positions the pump port being open in the centre position, e.g. so-called open 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
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3122—Special positions other than the pump port being connected to working ports or the working ports being connected to the return line
    • F15B2211/3133—Regenerative position connecting the working ports or connecting the working ports to the pump, e.g. for high-speed approach stroke
    • 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
    • F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
    • F15B2211/3157—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line
    • F15B2211/31576—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line having a single pressure source and a single output member
    • 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
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/321—Directional control characterised by the type of actuation mechanically
    • F15B2211/324—Directional control characterised by the type of actuation mechanically manually, e.g. by using a lever or pedal
    • 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
    • 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
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50563—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure
    • F15B2211/50581—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure using counterbalance 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
    • F15B2211/50—Pressure control
    • F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
    • F15B2211/5153—Pressure control characterised by the connections of the pressure control means in the circuit being connected to an output member and a 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • 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
    • F15B2211/7114—Multiple output members, e.g. multiple hydraulic motors or cylinders with direct connection between the chambers of different actuators
    • F15B2211/7128—Multiple output members, e.g. multiple hydraulic motors or cylinders with direct connection between the chambers of different actuators the chambers being connected in parallel
    • 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
    • F15B2211/75—Control of speed of the output member
    • 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
    • F15B2211/78—Control of multiple output members
    • 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
    • F15B2211/78—Control of multiple output members
    • F15B2211/783—Sequential control

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)
JP11183079A 1979-09-01 1979-09-01 Compound oil pressure circuit Granted JPS5635806A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP11183079A JPS5635806A (en) 1979-09-01 1979-09-01 Compound oil pressure circuit
GB8027410A GB2057580B (en) 1979-09-01 1980-08-22 Hydraulic control circuit system
IT49568/80A IT1146195B (it) 1979-09-01 1980-08-28 Perfezionamento nei circuiti di controllo idraulici per cilindri idraulici a doppio effetto
US06/182,073 US4622886A (en) 1979-09-01 1980-08-28 Hydraulic control circuit system
FR8018844A FR2464392A1 (fr) 1979-09-01 1980-08-29 Circuit hydraulique pour la commande de verins hydrauliques a double effet
CA000359383A CA1146447A (en) 1979-09-01 1980-08-29 Hydraulic control circuit system
DE3032596A DE3032596C2 (de) 1979-09-01 1980-08-29 Hydraulische Steuerkreisvorrichtung.
US06/308,905 US4635532A (en) 1979-09-01 1981-10-05 Speedup device for hydraulic control circuit systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11183079A JPS5635806A (en) 1979-09-01 1979-09-01 Compound oil pressure circuit

Publications (2)

Publication Number Publication Date
JPS5635806A true JPS5635806A (en) 1981-04-08
JPH0236803B2 JPH0236803B2 (ja) 1990-08-21

Family

ID=14571229

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11183079A Granted JPS5635806A (en) 1979-09-01 1979-09-01 Compound oil pressure circuit

Country Status (7)

Country Link
US (2) US4622886A (ja)
JP (1) JPS5635806A (ja)
CA (1) CA1146447A (ja)
DE (1) DE3032596C2 (ja)
FR (1) FR2464392A1 (ja)
GB (1) GB2057580B (ja)
IT (1) IT1146195B (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019173867A (ja) * 2018-03-28 2019-10-10 株式会社クボタ 作業機の油圧システム
JP2022064199A (ja) * 2020-10-13 2022-04-25 株式会社クボタ 作業機の油圧システム

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4723478A (en) * 1983-02-04 1988-02-09 The Cessna Aircraft Company Series self-leveling valve
US4561342A (en) * 1983-07-25 1985-12-31 The Cessna Aircraft Company Series self-leveling valve
JPS622805U (ja) * 1985-06-20 1987-01-09
US4709618A (en) * 1985-10-02 1987-12-01 The Cessna Aircraft Company Series self-leveling valve with single spool for unloading and relief
US4840111A (en) * 1986-01-31 1989-06-20 Moog Inc. Energy-conserving regenerative-flow valves for hydraulic servomotors
US4815357A (en) * 1987-07-21 1989-03-28 Lull Corp. Adjustable divided flow self-leveling system
EP0321890B1 (de) * 1987-12-22 1993-04-21 Barmag Ag Handhabungsgerät
US5014734A (en) * 1990-08-31 1991-05-14 Caterpillar Inc. Quick drop valve
DE4031091A1 (de) * 1990-10-02 1992-04-09 Ex Cell O Gmbh Vorrichtung zum unrundbearbeiten von werkstuecken
DK167322B1 (da) * 1991-10-28 1993-10-11 Danfoss As Hydraulisk kredsloeb
US5233909A (en) * 1992-07-21 1993-08-10 Decatur Cylinder, Inc. Integral regenerative fluid system
US5275086A (en) * 1992-08-27 1994-01-04 Unlimited Solutions, Inc. Fluid actuator with internal pressure relief valve
US5326291A (en) * 1992-10-13 1994-07-05 The United States Of America As Represented By The Secretary Of The Navy Actuator mechanism for operating a torpedo tube shutter door
US6094910A (en) * 1995-12-22 2000-08-01 Maritime Hydraulics As Apparatus and method for raising and lowering a piston in a piston cylinder arrangement in a derrick
DE19603400A1 (de) * 1996-01-31 1997-08-07 Claas Saulgau Gmbh Landwirtschaftliche Maschine mit in Fahrtrichtung gestaffelt angeordneten Arbeitswerkzeugen
US6018895A (en) * 1996-03-28 2000-02-01 Clark Equipment Company Valve stack in a mini-excavator directing fluid under pressure from multiple pumps to actuable elements
AU720849B2 (en) * 1996-03-28 2000-06-15 Clark Equipment Company Multifunction valve stack
US5682955A (en) * 1996-09-06 1997-11-04 Caterpillar Inc. Blade control system for an earthmoving blade
DE19640100B4 (de) * 1996-09-28 2005-07-14 Sauer-Danfoss Holding Aps Hydraulisches System
DE19921957A1 (de) * 1999-05-14 2000-11-16 Claas Saulgau Gmbh Steuerung für landwirtschaftliche Arbeitsmaschine
JP4058909B2 (ja) * 2001-01-22 2008-03-12 日産自動車株式会社 内燃機関の油圧制御装置
NL1017987C2 (nl) * 2001-05-03 2002-11-05 Actuant Corp Hydraulische bedieningsinrichting, in het bijzonder voor een afdekkapsamenstel van een voertuig.
DE10310315B3 (de) * 2003-03-10 2004-12-02 Sauer-Danfoss Aps Antriebsanordnung, insbesondere Hebevorrichtung eines Arbeitsfahrzeugs
US7047735B2 (en) * 2004-07-30 2006-05-23 Deere & Company Increasing hydraulic flow to tractor attachments
US8413572B1 (en) 2006-11-22 2013-04-09 Westendorf Manufacturing, Co. Auto attachment coupler with abductor valve
US8442316B2 (en) 2007-01-05 2013-05-14 Geo Semiconductor Inc. System and method for improving color and brightness uniformity of backlit LCD displays
US8055070B2 (en) 2007-01-05 2011-11-08 Geo Semiconductor Inc. Color and geometry distortion correction system and method
JP5283862B2 (ja) * 2007-06-05 2013-09-04 三陽機器株式会社 油圧制御装置
GB201021961D0 (en) * 2010-12-24 2011-02-02 Agco Int Gmbh Hydraulic arrangement for a lifting unit
US8927026B2 (en) 2011-04-07 2015-01-06 The Procter & Gamble Company Shampoo compositions with increased deposition of polyacrylate microcapsules
US10047502B2 (en) 2015-12-10 2018-08-14 Caterpillar Inc. System and method for controlling a work implement of a machine
US10352335B2 (en) * 2015-12-22 2019-07-16 Kubota Corporation Hydraulic system of work machine
US11015624B2 (en) 2016-05-19 2021-05-25 Steven H. Marquardt Methods and devices for conserving energy in fluid power production
US10550863B1 (en) 2016-05-19 2020-02-04 Steven H. Marquardt Direct link circuit
US10914322B1 (en) 2016-05-19 2021-02-09 Steven H. Marquardt Energy saving accumulator circuit
CN105951904A (zh) * 2016-06-24 2016-09-21 山东交通学院 一种紧凑型多单元连杆驱动滑移式装载机器人
US10030354B1 (en) 2017-02-28 2018-07-24 CNH Industrial America, LLC Anti-spill for loaders

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US25643A (en) * 1859-10-04 bourgnon
US2729224A (en) * 1952-06-06 1956-01-03 Deere & Co Fluid-pressure control system
FR1176987A (fr) * 1957-05-25 1959-04-17 Gen Mecanique Appliquee Soc In Perfectionnements apportés aux installations de commande hydraulique à vérins conjugués
GB863701A (en) * 1959-04-03 1961-03-22 Caterpillar Tractor Co Control for hydraulic jack circuits
US3120314A (en) * 1960-10-11 1964-02-04 Massey Ferguson Inc Self-leveling valve attachment for loaders
DE1406784A1 (de) * 1963-08-02 1969-04-17 Crede & Co Gmbh Geb Hubstapler mit hydraulischem Hubwerk
GB1005160A (en) * 1963-10-19 1965-09-22 Westinghouse Bremsen Gmbh Fluid control valve mechanism
FR1401412A (fr) * 1964-04-23 1965-06-04 Faucheux Ets Dispositif de correction par procédé hydraulique du mouvement d'un organe mécanique, par exemple d'une benne, à l'extrémité d'un bras de levage
US3407947A (en) * 1965-12-22 1968-10-29 Antonio Valla & C S N C Material-moving device for moving objects
FR1495487A (fr) * 1966-06-10 1967-09-22 Oleomat Perfectionnements apportés aux dispositifs de chargement montés sur engin de terrassement
US3483890A (en) * 1967-06-15 1969-12-16 Caterpillar Tractor Co Multispool control valve with limited series operation
GB1141416A (en) * 1967-09-13 1969-01-29 Hydraulic Unit Specialities Co Speed and directional control valve for double acting lift cylinder
GB1211787A (en) * 1967-12-14 1970-11-11 Danfoss As Control equipment for the reversible hydrostatic drive of a vehicle
FR1572390A (ja) * 1968-04-19 1969-06-27
US4034649A (en) * 1969-07-31 1977-07-12 Carrier Corporation Automatic self-leveling forks
US3633617A (en) * 1970-01-28 1972-01-11 Parker Hannifin Corp Fluid system and valve assembly therefor
US3654835A (en) * 1970-05-25 1972-04-11 Ato Inc Regeneration valve
US3786827A (en) * 1973-03-16 1974-01-22 Caterpillar Tractor Co Flow control valve
US3987920A (en) * 1975-06-23 1976-10-26 J. I. Case Company Self-leveling system for material handling implement
US4041976A (en) * 1975-12-01 1977-08-16 Caterpillar Tractor Co. Single lever control arrangement for actuating multiple valves
JPS5730483Y2 (ja) * 1976-06-10 1982-07-05
FR2357764A1 (fr) * 1976-07-06 1978-02-03 Poclain Sa Dispositif de commande d'au moins deux organes moteurs a fluide
SE424759B (sv) * 1978-04-11 1982-08-09 Atlas Copco Ab Ventilkoppling for hydraulisk styrning av borrbom
US4249569A (en) * 1979-06-18 1981-02-10 Tadeusz Budzich Load responsive fluid control valve
US4268228A (en) * 1979-08-13 1981-05-19 Delta-X Corporation Hydraulic pumping unit
US4343151A (en) * 1980-05-16 1982-08-10 Caterpillar Tractor Co. Series - parallel selector for steering and implement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019173867A (ja) * 2018-03-28 2019-10-10 株式会社クボタ 作業機の油圧システム
JP2022064199A (ja) * 2020-10-13 2022-04-25 株式会社クボタ 作業機の油圧システム

Also Published As

Publication number Publication date
FR2464392B1 (ja) 1985-03-22
CA1146447A (en) 1983-05-17
GB2057580A (en) 1981-04-01
US4622886A (en) 1986-11-18
IT8049568A0 (it) 1980-08-28
DE3032596A1 (de) 1981-03-12
GB2057580B (en) 1983-08-10
JPH0236803B2 (ja) 1990-08-21
DE3032596C2 (de) 1985-10-03
IT1146195B (it) 1986-11-12
FR2464392A1 (fr) 1981-03-06
US4635532A (en) 1987-01-13

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