AT291330B - Hydraulic actuator for the working tools of earthworking machines - Google Patents

Hydraulic actuator for the working tools of earthworking machines

Info

Publication number
AT291330B
AT291330B AT433169A AT433169A AT291330B AT 291330 B AT291330 B AT 291330B AT 433169 A AT433169 A AT 433169A AT 433169 A AT433169 A AT 433169A AT 291330 B AT291330 B AT 291330B
Authority
AT
Austria
Prior art keywords
hydraulic actuator
working tools
earthworking machines
earthworking
machines
Prior art date
Application number
AT433169A
Other languages
German (de)
Original Assignee
Frisch Geb Kg Eisenwerk
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 DE19681759867 external-priority patent/DE1759867C/en
Application filed by Frisch Geb Kg Eisenwerk filed Critical Frisch Geb Kg Eisenwerk
Application granted granted Critical
Publication of AT291330B publication Critical patent/AT291330B/en

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

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)
  • Fluid-Pressure Circuits (AREA)
AT433169A 1968-06-15 1969-05-05 Hydraulic actuator for the working tools of earthworking machines AT291330B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681759867 DE1759867C (en) 1968-06-15 Hydraulic control device for earth moving machines

Publications (1)

Publication Number Publication Date
AT291330B true AT291330B (en) 1971-07-12

Family

ID=5695829

Family Applications (1)

Application Number Title Priority Date Filing Date
AT433169A AT291330B (en) 1968-06-15 1969-05-05 Hydraulic actuator for the working tools of earthworking machines

Country Status (4)

Country Link
AT (1) AT291330B (en)
BE (1) BE734107A (en)
ES (1) ES367741A1 (en)
FR (1) FR2010953A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2261627A1 (en) * 1971-12-13 1973-06-28 Caterpillar Tractor Co HYDRAULIC SHIFTING SYSTEM FOR AN EXCAVATOR OR THE SAME

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU631727B2 (en) * 1990-03-09 1992-12-03 Kubota Corporation Hydraulic circuit for a working vehicle having a plurality of hydraulic actuators
JP5791703B2 (en) 2010-04-30 2015-10-07 イートン コーポレーションＥａｔｏｎ Ｃｏｒｐｏｒａｔｉｏｎ Combined fluid pump combination circuit
CA2839457A1 (en) 2011-07-01 2013-01-10 Eaton Corporation Hydraulic systems utilizing combination open- and closed-loop pump systems

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2261627A1 (en) * 1971-12-13 1973-06-28 Caterpillar Tractor Co HYDRAULIC SHIFTING SYSTEM FOR AN EXCAVATOR OR THE SAME

Also Published As

Publication number Publication date
DE1759867A1 (en) 1971-10-14
ES367741A1 (en) 1971-04-16
BE734107A (en) 1969-11-17
FR2010953A1 (en) 1970-02-20

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee