JPS4887804U - - Google Patents

Info

Publication number
JPS4887804U
JPS4887804U JP1059972U JP1059972U JPS4887804U JP S4887804 U JPS4887804 U JP S4887804U JP 1059972 U JP1059972 U JP 1059972U JP 1059972 U JP1059972 U JP 1059972U JP S4887804 U JPS4887804 U JP S4887804U
Authority
JP
Japan
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
JP1059972U
Other languages
Japanese (ja)
Other versions
JPS5550215Y2 (en
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 to BE794481D priority Critical patent/BE794481A/en
Application filed filed Critical
Priority to JP1059972U priority patent/JPS5550215Y2/ja
Priority to DE19732303200 priority patent/DE2303200A1/en
Priority to FR7302515A priority patent/FR2169212B1/fr
Publication of JPS4887804U publication Critical patent/JPS4887804U/ja
Application granted granted Critical
Publication of JPS5550215Y2 publication Critical patent/JPS5550215Y2/ja
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
    • 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
    • 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
    • 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
    • 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
    • F15B2211/30565—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
    • 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
    • F15B2211/70—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

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)
  • Operation Control Of Excavators (AREA)
JP1059972U 1972-01-24 1972-01-24 Expired JPS5550215Y2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE794481D BE794481A (en) 1972-01-24 MECHANICAL SHOVEL FOR EARTH MOVING WORKS
JP1059972U JPS5550215Y2 (en) 1972-01-24 1972-01-24
DE19732303200 DE2303200A1 (en) 1972-01-24 1973-01-23 EARTH CONSTRUCTION VEHICLE, IN PARTICULAR EXCAVATOR
FR7302515A FR2169212B1 (en) 1972-01-24 1973-01-24

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1059972U JPS5550215Y2 (en) 1972-01-24 1972-01-24

Publications (2)

Publication Number Publication Date
JPS4887804U true JPS4887804U (en) 1973-10-24
JPS5550215Y2 JPS5550215Y2 (en) 1980-11-21

Family

ID=11754693

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1059972U Expired JPS5550215Y2 (en) 1972-01-24 1972-01-24

Country Status (4)

Country Link
JP (1) JPS5550215Y2 (en)
BE (1) BE794481A (en)
DE (1) DE2303200A1 (en)
FR (1) FR2169212B1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5810960U (en) * 1981-07-10 1983-01-24 日立建機株式会社 Hydraulic excavator hydraulic circuit
FR2581404B1 (en) * 1985-05-03 1987-07-10 Poncin Gilles ALL TERRAIN EARTHMOVING MACHINE
DE3516429A1 (en) * 1985-05-08 1986-11-13 Rudolf Hausherr & Söhne GmbH & Co KG, 4322 Sprockhövel CIRCUIT ARRANGEMENT FOR HYDRAULIC APPLICATION OF THE AGGREGATE OF A LOADER
JP3497947B2 (en) * 1996-06-11 2004-02-16 日立建機株式会社 Hydraulic drive

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3576277A (en) * 1969-06-19 1971-04-27 Don Curl Sterile scrub apparatus with selection of washing liquid, and method
US3601621A (en) * 1969-08-18 1971-08-24 Edwin E Ritchie Proximity control apparatus

Also Published As

Publication number Publication date
BE794481A (en) 1973-05-16
FR2169212A1 (en) 1973-09-07
JPS5550215Y2 (en) 1980-11-21
FR2169212B1 (en) 1976-04-30
DE2303200A1 (en) 1973-08-09

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