FR2169397B1 - - Google Patents

Info

Publication number
FR2169397B1
FR2169397B1 FR7303047A FR7303047A FR2169397B1 FR 2169397 B1 FR2169397 B1 FR 2169397B1 FR 7303047 A FR7303047 A FR 7303047A FR 7303047 A FR7303047 A FR 7303047A FR 2169397 B1 FR2169397 B1 FR 2169397B1
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
FR7303047A
Other languages
French (fr)
Other versions
FR2169397A1 (en
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.)
Atlas Terex GmbH
Original Assignee
Hinrich Weyhausen KG Maschinenfabrik
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 Hinrich Weyhausen KG Maschinenfabrik filed Critical Hinrich Weyhausen KG Maschinenfabrik
Publication of FR2169397A1 publication Critical patent/FR2169397A1/fr
Application granted granted Critical
Publication of FR2169397B1 publication Critical patent/FR2169397B1/fr
Expired 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
    • 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
    • F15B2211/30565—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
    • F15B2211/3116—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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)
FR7303047A 1972-01-27 1973-01-29 Expired FR2169397B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722203713 DE2203713A1 (en) 1972-01-27 1972-01-27 CIRCUIT FOR HYDROSTATICALLY OPERATED WORKING DEVICES

Publications (2)

Publication Number Publication Date
FR2169397A1 FR2169397A1 (en) 1973-09-07
FR2169397B1 true FR2169397B1 (en) 1978-08-04

Family

ID=5834138

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7303047A Expired FR2169397B1 (en) 1972-01-27 1973-01-29

Country Status (5)

Country Link
DE (1) DE2203713A1 (en)
FR (1) FR2169397B1 (en)
GB (1) GB1405724A (en)
IT (1) IT977669B (en)
SE (1) SE402609B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5847109Y2 (en) * 1977-10-31 1983-10-27 株式会社クボタ Circuit structure of backhoe and dozer work vehicle
JPS6129813Y2 (en) * 1980-07-07 1986-09-02
KR870000506B1 (en) * 1981-05-02 1987-03-12 니시모도 후미히라(西元文平) Hydraulic circuit system for civil engineering and architectural machinery
JPS5810960U (en) * 1981-07-10 1983-01-24 日立建機株式会社 Hydraulic excavator hydraulic circuit
IT1187892B (en) * 1986-02-04 1987-12-23 Chs Vickers Spa HYDRAULIC CONTROL CIRCUIT FOR WORKING BODIES OF EARTH-MOVING MACHINES WITH CENTRALIZED ACTUATOR BRAKING
SE524901C2 (en) * 2003-10-17 2004-10-19 Bengt Olsson Control device for e.g. servo motors, comprises directional valve connected to selector valve inlets and hydraulic fluid reservoir

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2768499A (en) * 1953-04-20 1956-10-30 John S Pilch Hydraulic system comprising multiple pump and ram units
DE1426555A1 (en) * 1964-07-27 1968-11-21 Prerovske Strojirny Np Device for controlling the hydraulic drive units of an earth moving machine, in particular an excavator
GB1145531A (en) * 1966-03-14 1969-03-19 Hydraulic Drilling Equipment L Hydraulic system

Also Published As

Publication number Publication date
DE2203713A1 (en) 1973-08-09
FR2169397A1 (en) 1973-09-07
GB1405724A (en) 1975-09-10
IT977669B (en) 1974-09-20
SE402609B (en) 1978-07-10

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Legal Events

Date Code Title Description
ST Notification of lapse