FR2376258B1 - - Google Patents

Info

Publication number
FR2376258B1
FR2376258B1 FR7739535A FR7739535A FR2376258B1 FR 2376258 B1 FR2376258 B1 FR 2376258B1 FR 7739535 A FR7739535 A FR 7739535A FR 7739535 A FR7739535 A FR 7739535A FR 2376258 B1 FR2376258 B1 FR 2376258B1
Authority
FR
France
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
FR7739535A
Other languages
French (fr)
Other versions
FR2376258A1 (fr
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.)
Kubota Corp
Original Assignee
Kubota Corp
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
Priority claimed from JP51158099A external-priority patent/JPS5943613B2/ja
Priority claimed from JP13232577U external-priority patent/JPS59373Y2/ja
Priority claimed from JP13531577U external-priority patent/JPS5461195U/ja
Application filed by Kubota Corp filed Critical Kubota Corp
Publication of FR2376258A1 publication Critical patent/FR2376258A1/fr
Application granted granted Critical
Publication of FR2376258B1 publication Critical patent/FR2376258B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • E02F9/2292—Systems with two or more pumps
    • 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
    • E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
    • E02F3/963—Arrangements on backhoes for alternate use of different tools
    • E02F3/964—Arrangements on backhoes for alternate use of different tools of several tools mounted on one machine
    • 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
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/10—Supports for movable superstructures mounted on travelling or walking gears or on other superstructures
    • E02F9/12—Slewing or traversing gears
    • E02F9/121—Turntables, i.e. structure rotatable about 360°
    • E02F9/123—Drives or control devices specially adapted therefor
    • 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
    • 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
    • E02F9/2239—Control of flow rate; Load sensing arrangements using two or more pumps with cross-assistance
    • 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
    • F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
    • 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
    • F15B2211/20576—Systems with pumps with multiple pumps
    • 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
    • F15B2211/3056—Assemblies of multiple valves
    • F15B2211/30585—Assemblies of multiple valves having a single valve for 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
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/3056—Assemblies of multiple valves
    • F15B2211/3059—Assemblies of multiple valves having multiple valves for multiple output members
    • F15B2211/30595—Assemblies of multiple valves having multiple valves for multiple output members with additional valves between the groups of valves for 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
    • F15B2211/30—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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • F15B2211/7142—Multiple output members, e.g. multiple hydraulic motors or cylinders the output members being arranged in multiple groups
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)
FR7739535A 1976-12-28 1977-12-28 Engin a commande hydraulique, notamment engin de construction Granted FR2376258A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP51158099A JPS5943613B2 (ja) 1976-12-28 1976-12-28 旋回作業車の流体圧アクテュエ−タ−操作構造
JP13232577U JPS59373Y2 (ja) 1977-09-30 1977-09-30 掘削作業車の流体圧回路
JP13531577U JPS5461195U (US06589383-20030708-C00041.png) 1977-10-07 1977-10-07

Publications (2)

Publication Number Publication Date
FR2376258A1 FR2376258A1 (fr) 1978-07-28
FR2376258B1 true FR2376258B1 (US06589383-20030708-C00041.png) 1983-08-12

Family

ID=27316476

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7739535A Granted FR2376258A1 (fr) 1976-12-28 1977-12-28 Engin a commande hydraulique, notamment engin de construction

Country Status (2)

Country Link
US (1) US4171054A (US06589383-20030708-C00041.png)
FR (1) FR2376258A1 (US06589383-20030708-C00041.png)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE424759B (sv) * 1978-04-11 1982-08-09 Atlas Copco Ab Ventilkoppling for hydraulisk styrning av borrbom
JPS6014817Y2 (ja) * 1979-04-18 1985-05-11 株式会社小松製作所 掘削積込機の掘削積込装置
JPS6129813Y2 (US06589383-20030708-C00041.png) * 1980-07-07 1986-09-02
GB2090383B (en) * 1980-12-26 1984-08-30 Kubota Ltd Hydrostatic transmission for a tracked vehicle
FR2581404B1 (fr) * 1985-05-03 1987-07-10 Poncin Gilles Engin de terrassement tous terrains
US4776750A (en) * 1987-04-23 1988-10-11 Deere & Company Remote control system for earth working vehicle
JPH078601Y2 (ja) * 1987-11-10 1995-03-01 株式会社クボタ バックホウの油圧回路
JPH0791846B2 (ja) * 1988-12-19 1995-10-09 株式会社小松製作所 油圧パワーショベルのサービス弁回路
WO1995016630A1 (de) * 1993-12-14 1995-06-22 Palfinger Aktiengesellschaft Hydraulische steuereinrichtung für einen ladekran
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
US6003313A (en) * 1996-10-21 1999-12-21 Farrar; Johnny High pressure to low pressure exchange system for hydraulic drives
WO2015073529A1 (en) 2013-11-12 2015-05-21 Clark Equipment Company Hydraulic brake
FR3057844B1 (fr) * 2016-10-25 2019-11-22 Poclain Hydraulics Industrie Systeme d'assistance d'entrainement d'une remorque a partir d'un circuit hydraulique ouvert de bennage
JP6959905B2 (ja) * 2018-11-29 2021-11-05 日立建機株式会社 油圧駆動装置

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1400491A (fr) * 1964-04-14 1965-05-28 Auxitra Système de distribution hydraulique pour excavatrice
US3466770A (en) * 1966-09-16 1969-09-16 Frank W Morrison Self-propelled earth excavating and leveling apparatus
US3481251A (en) * 1968-02-05 1969-12-02 Warner Swasey Co Machine with hydraulic boom
US4030623A (en) * 1971-12-13 1977-06-21 Caterpillar Tractor Co. Hydraulic circuitry for an excavator
US3922855A (en) * 1971-12-13 1975-12-02 Caterpillar Tractor Co Hydraulic circuitry for an excavator
JPS5220088Y2 (US06589383-20030708-C00041.png) * 1972-07-15 1977-05-10
JPS5333116Y2 (US06589383-20030708-C00041.png) * 1972-08-03 1978-08-15
US3960284A (en) * 1972-10-02 1976-06-01 American Hoist & Derrick Company Hydraulic backhoe circuitry
US3978998A (en) * 1975-05-16 1976-09-07 J. I. Case Company Fast hoist control system
IT1057824B (it) * 1976-03-31 1982-03-30 Simit Spa Attrezzatura per lo scavo laterale mediante escavatori idraulici
US4023364A (en) * 1976-07-19 1977-05-17 Caterpillar Tractor Co. Swing flow supplemental travel for an excavator
US4078681A (en) * 1976-08-24 1978-03-14 Caterpillar Tractor Co. Dual pump hydraulic control system with predetermined flow crossover provision

Also Published As

Publication number Publication date
US4171054A (en) 1979-10-16
FR2376258A1 (fr) 1978-07-28

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