JPS5517246B2 - - Google Patents

Info

Publication number
JPS5517246B2
JPS5517246B2 JP12448172A JP12448172A JPS5517246B2 JP S5517246 B2 JPS5517246 B2 JP S5517246B2 JP 12448172 A JP12448172 A JP 12448172A JP 12448172 A JP12448172 A JP 12448172A JP S5517246 B2 JPS5517246 B2 JP S5517246B2
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.)
Expired
Application number
JP12448172A
Other languages
Japanese (ja)
Other versions
JPS4865702A (cg-RX-API-DMAC7.html
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 filed Critical
Publication of JPS4865702A publication Critical patent/JPS4865702A/ja
Publication of JPS5517246B2 publication Critical patent/JPS5517246B2/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
    • 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)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)
JP12448172A 1971-12-13 1972-12-13 Expired JPS5517246B2 (cg-RX-API-DMAC7.html)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
JPS4865702A JPS4865702A (cg-RX-API-DMAC7.html) 1973-09-10
JPS5517246B2 true JPS5517246B2 (cg-RX-API-DMAC7.html) 1980-05-10

Family

ID=22768908

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12448172A Expired JPS5517246B2 (cg-RX-API-DMAC7.html) 1971-12-13 1972-12-13

Country Status (7)

Country Link
JP (1) JPS5517246B2 (cg-RX-API-DMAC7.html)
BE (1) BE792617A (cg-RX-API-DMAC7.html)
CA (1) CA982089A (cg-RX-API-DMAC7.html)
DE (1) DE2261627C2 (cg-RX-API-DMAC7.html)
FR (1) FR2163588B1 (cg-RX-API-DMAC7.html)
GB (1) GB1421177A (cg-RX-API-DMAC7.html)
SE (1) SE394304B (cg-RX-API-DMAC7.html)

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 (ja) * 1977-10-31 1983-10-27 株式会社クボタ バックホウ兼ド−ザ作業車の回路構造
US4214445A (en) * 1979-05-14 1980-07-29 Dresser Industries, Inc. Hydraulic circuitry for raise drill apparatus
JPS6129813Y2 (cg-RX-API-DMAC7.html) * 1980-07-07 1986-09-02
JPS6138204A (ja) * 1984-07-30 1986-02-24 Toshiba Mach Co Ltd 多連油圧切換弁のための多連パイロツト弁
AU2003271543A1 (en) * 2002-11-07 2004-06-07 Bosch Rexroth Ag Double-circuit hydraulic system
DE10255738A1 (de) * 2002-11-07 2004-05-27 Bosch Rexroth Ag Hydraulisches Zweikreissystem
GB2395769B (en) * 2002-11-27 2006-02-08 Komatsu Uk 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 (cg-RX-API-DMAC7.html) *
AT243194B (de) * 1963-04-24 1965-10-25 Orenstein & Koppel Ag Schaltung für Hydraulikbagger
DE1634915C3 (de) * 1967-03-10 1981-02-12 O & K Orenstein & Koppel Ag Schaltung für Hydraulikbagger
AT291330B (de) * 1968-06-15 1971-07-12 Frisch Geb Kg Eisenwerk Hydraulische Betätigungsvorrichtung für die Arbeitswerkzeuge von Erdbearbeitungsmachinen

Also Published As

Publication number Publication date
FR2163588B1 (cg-RX-API-DMAC7.html) 1981-04-30
JPS4865702A (cg-RX-API-DMAC7.html) 1973-09-10
DE2261627A1 (de) 1973-06-28
FR2163588A1 (cg-RX-API-DMAC7.html) 1973-07-27
SE394304B (sv) 1977-06-20
BE792617A (fr) 1973-06-12
DE2261627C2 (de) 1983-10-20
GB1421177A (en) 1976-01-14
CA982089A (en) 1976-01-20

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