BE792617A - Hydraulic circuit for an excavator. - Google Patents
Hydraulic circuit for an excavator.Info
- Publication number
- BE792617A BE792617A BE792617DA BE792617A BE 792617 A BE792617 A BE 792617A BE 792617D A BE792617D A BE 792617DA BE 792617 A BE792617 A BE 792617A
- Authority
- BE
- Belgium
- Prior art keywords
- excavator
- hydraulic circuit
- hydraulic
- circuit
- Prior art date
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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US20702771A | 1971-12-13 | 1971-12-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
BE792617A true BE792617A (en) | 1973-06-12 |
Family
ID=22768908
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE792617D BE792617A (en) | 1971-12-13 | Hydraulic circuit for an excavator. |
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)
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 |
JP2006505750A (en) * | 2002-11-07 | 2006-02-16 | ボッシュ レックスロス アーゲー | Hydraulic dual circuit system |
GB2395769B (en) * | 2002-11-27 | 2006-02-08 | Komatsu Uk Ltd | Cavitation prevention system of hydraulic travelling vehicle |
Family Cites Families (4)
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 |
-
0
- BE BE792617D patent/BE792617A/en not_active IP Right Cessation
-
1972
- 1972-12-06 CA CA158,237A patent/CA982089A/en not_active Expired
- 1972-12-13 GB GB5757972A patent/GB1421177A/en not_active Expired
- 1972-12-13 DE DE19722261627 patent/DE2261627C2/en not_active Expired
- 1972-12-13 JP JP12448172A patent/JPS5517246B2/ja not_active Expired
- 1972-12-13 FR FR7244397A patent/FR2163588B1/fr not_active Expired
- 1972-12-13 SE SE1629472A patent/SE394304B/en unknown
Also Published As
Publication number | Publication date |
---|---|
SE394304B (en) | 1977-06-20 |
DE2261627C2 (en) | 1983-10-20 |
GB1421177A (en) | 1976-01-14 |
DE2261627A1 (en) | 1973-06-28 |
FR2163588B1 (en) | 1981-04-30 |
FR2163588A1 (en) | 1973-07-27 |
CA982089A (en) | 1976-01-20 |
JPS4865702A (en) | 1973-09-10 |
JPS5517246B2 (en) | 1980-05-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
RE | Patent lapsed |
Owner name: CATERPILLAR INC. Effective date: 19911231 |