FR2449751B1 - - Google Patents
Info
- Publication number
- FR2449751B1 FR2449751B1 FR8004111A FR8004111A FR2449751B1 FR 2449751 B1 FR2449751 B1 FR 2449751B1 FR 8004111 A FR8004111 A FR 8004111A FR 8004111 A FR8004111 A FR 8004111A FR 2449751 B1 FR2449751 B1 FR 2449751B1
- 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
Links
Classifications
-
- 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
- E02F9/2217—Hydraulic or pneumatic drives with energy recovery arrangements, e.g. using accumulators, flywheels
-
- 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
- E02F9/2242—Control of flow rate; Load sensing arrangements using two or more pumps with cross-assistance including an electronic controller
-
- 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)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2077679A JPS55115606A (en) | 1979-02-26 | 1979-02-26 | Closed hydraulic circuit for controlling operation of pump |
| JP8021279A JPS566901A (en) | 1979-06-27 | 1979-06-27 | Hydraulic circuit for construction equipment |
| JP54134259A JPS595166B2 (ja) | 1979-10-19 | 1979-10-19 | ポンプ制御油圧回路の制御方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2449751A1 FR2449751A1 (fr) | 1980-09-19 |
| FR2449751B1 true FR2449751B1 (es) | 1985-04-12 |
Family
ID=27283160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8004111A Granted FR2449751A1 (fr) | 1979-02-26 | 1980-02-25 | Systeme d'actionnement pour des machines de construction et procede pour la commande des circuits hydrauliques d'un tel systeme |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE3007011C2 (es) |
| FR (1) | FR2449751A1 (es) |
| GB (1) | GB2045360B (es) |
| SE (1) | SE448762B (es) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57197336A (en) * | 1981-05-29 | 1982-12-03 | Komatsu Ltd | Oil-pressure circuit for turning excavator |
| JPS5817202A (ja) * | 1981-07-24 | 1983-02-01 | Hitachi Constr Mach Co Ltd | 油圧回路の制御方法 |
| JPS5857504A (ja) * | 1981-10-02 | 1983-04-05 | Hitachi Constr Mach Co Ltd | 油圧回路の制御方法 |
| US4537029A (en) * | 1982-09-23 | 1985-08-27 | Vickers, Incorporated | Power transmission |
| US5029067A (en) * | 1987-01-30 | 1991-07-02 | Kabushiki Kaisha Komatsu Seisakusho | Operation control device |
| DE3704452A1 (de) * | 1987-02-10 | 1988-08-18 | Mannesmann Ag | Hydraulikanlage fuer einen bagger |
| GB2250108B (en) * | 1990-10-31 | 1995-02-08 | Samsung Heavy Ind | Control system for automatically controlling actuators of an excavator |
| JP5572586B2 (ja) * | 2011-05-19 | 2014-08-13 | 日立建機株式会社 | 作業機械の油圧駆動装置 |
| JP5973979B2 (ja) * | 2013-11-21 | 2016-08-23 | 日立建機株式会社 | 作業機械の駆動装置 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2631530A1 (de) * | 1976-07-14 | 1978-01-19 | Weserhuette Ag Eisenwerk | Steuerung von hydraulisch angetriebenen bagger- und auslegerkranen |
-
1980
- 1980-02-25 GB GB8006247A patent/GB2045360B/en not_active Expired
- 1980-02-25 DE DE19803007011 patent/DE3007011C2/de not_active Expired
- 1980-02-25 FR FR8004111A patent/FR2449751A1/fr active Granted
- 1980-02-25 SE SE8001459A patent/SE448762B/sv not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE3007011C2 (de) | 1987-01-02 |
| SE448762B (sv) | 1987-03-16 |
| FR2449751A1 (fr) | 1980-09-19 |
| DE3007011A1 (de) | 1981-01-15 |
| GB2045360B (en) | 1982-12-08 |
| GB2045360A (en) | 1980-10-29 |
| SE8001459L (sv) | 1980-08-27 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |