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 (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
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
JP12448172A 1971-12-13 1972-12-13 Expired JPS5517246B2 (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
JPS4865702A JPS4865702A (en) 1973-09-10
JPS5517246B2 true JPS5517246B2 (en) 1980-05-10

Family

ID=22768908

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12448172A Expired JPS5517246B2 (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
KR101011992B1 (en) * 2002-11-07 2011-01-31 보쉬 렉스로트 아게 Double-circuit hydraulic system
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
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
BE792617A (en) 1973-06-12
GB1421177A (en) 1976-01-14
FR2163588A1 (en) 1973-07-27
CA982089A (en) 1976-01-20
FR2163588B1 (en) 1981-04-30
DE2261627C2 (en) 1983-10-20
SE394304B (en) 1977-06-20
DE2261627A1 (en) 1973-06-28
JPS4865702A (en) 1973-09-10

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