FR2163588B1 - - Google Patents

Info

Publication number
FR2163588B1
FR2163588B1 FR7244397A FR7244397A FR2163588B1 FR 2163588 B1 FR2163588 B1 FR 2163588B1 FR 7244397 A FR7244397 A FR 7244397A FR 7244397 A FR7244397 A FR 7244397A FR 2163588 B1 FR2163588 B1 FR 2163588B1
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
FR7244397A
Other languages
French (fr)
Other versions
FR2163588A1 (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.)
Caterpillar Inc
Original Assignee
Caterpillar Tractor Co
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 Caterpillar Tractor Co filed Critical Caterpillar Tractor Co
Publication of FR2163588A1 publication Critical patent/FR2163588A1/fr
Application granted granted Critical
Publication of FR2163588B1 publication Critical patent/FR2163588B1/fr
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
    • 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
    • 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
    • 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
    • E02F9/2282—Systems using center bypass type changeover valves
    • 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
    • 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
    • E02F9/2296—Systems with a variable displacement pump

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)
FR7244397A 1971-12-13 1972-12-13 Expired FR2163588B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US20702771A 1971-12-13 1971-12-13

Publications (2)

Publication Number Publication Date
FR2163588A1 FR2163588A1 (en) 1973-07-27
FR2163588B1 true FR2163588B1 (en) 1981-04-30

Family

ID=22768908

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7244397A Expired FR2163588B1 (en) 1971-12-13 1972-12-13

Country Status (7)

Country Link
JP (1) JPS5517246B2 (en)
BE (1) BE792617A (en)
CA (1) CA982089A (en)
DE (1) DE2261627C2 (en)
FR (1) FR2163588B1 (en)
GB (1) GB1421177A (en)
SE (1) SE394304B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3990236A (en) * 1976-02-23 1976-11-09 Caterpillar Tractor Co. Load responsive pump controls of a fluid system
US3998053A (en) * 1976-03-15 1976-12-21 Caterpillar Tractor Co. Three-pump - three-circuit fluid system of a work vehicle having controlled fluid-combining means
US4078681A (en) * 1976-08-24 1978-03-14 Caterpillar Tractor Co. Dual pump hydraulic control system with predetermined flow crossover provision
JPS5847109Y2 (en) * 1977-10-31 1983-10-27 株式会社クボタ Circuit structure of backhoe and dozer work vehicle
US4214445A (en) * 1979-05-14 1980-07-29 Dresser Industries, Inc. Hydraulic circuitry for raise drill apparatus
JPS6129813Y2 (en) * 1980-07-07 1986-09-02
JPS6138204A (en) * 1984-07-30 1986-02-24 Toshiba Mach Co Ltd Multiple pilot valve for multiple hydraulic selector valve
DE10255738A1 (en) * 2002-11-07 2004-05-27 Bosch Rexroth Ag Double-circuit hydraulic system for controlling consumers of mobile equipment such as track equipment comprises two circuits interconnected by an interconnecting valve arrangement having two valve devices
KR101011992B1 (en) * 2002-11-07 2011-01-31 보쉬 렉스로트 아게 Double-circuit hydraulic system
GB2395769C (en) * 2002-11-27 2006-02-08 Komatsu Mfg Co Ltd Cavitation prevention system of hydraulic travelling vehicle

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD80869A (en) *
AT243194B (en) * 1963-04-24 1965-10-25 Orenstein & Koppel Ag Circuit for hydraulic excavator
DE1634915C3 (en) * 1967-03-10 1981-02-12 O & K Orenstein & Koppel Ag Circuit for hydraulic excavator
AT291330B (en) * 1968-06-15 1971-07-12 Frisch Geb Kg Eisenwerk Hydraulic actuator for the working tools of earthworking machines

Also Published As

Publication number Publication date
JPS5517246B2 (en) 1980-05-10
SE394304B (en) 1977-06-20
DE2261627C2 (en) 1983-10-20
BE792617A (en) 1973-06-12
CA982089A (en) 1976-01-20
JPS4865702A (en) 1973-09-10
DE2261627A1 (en) 1973-06-28
FR2163588A1 (en) 1973-07-27
GB1421177A (en) 1976-01-14

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse