JPS6314231B2 - - Google Patents
Info
- Publication number
- JPS6314231B2 JPS6314231B2 JP18713280A JP18713280A JPS6314231B2 JP S6314231 B2 JPS6314231 B2 JP S6314231B2 JP 18713280 A JP18713280 A JP 18713280A JP 18713280 A JP18713280 A JP 18713280A JP S6314231 B2 JPS6314231 B2 JP S6314231B2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- hydraulic
- valve
- motor
- servo
- Prior art date
- 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
- 230000007246 mechanism Effects 0.000 claims description 17
- 238000006073 displacement reaction Methods 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 claims description 10
- 230000007935 neutral effect Effects 0.000 description 18
- 239000003921 oil Substances 0.000 description 11
- 230000007423 decrease Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000011010 flushing procedure Methods 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002123 temporal effect Effects 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
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
- E02F9/08—Superstructures; Supports for superstructures
- E02F9/10—Supports for movable superstructures mounted on travelling or walking gears or on other superstructures
- E02F9/12—Slewing or traversing gears
- E02F9/121—Turntables, i.e. structure rotatable about 360°
- E02F9/123—Drives or control devices specially adapted therefor
-
- 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
- E02F9/08—Superstructures; Supports for superstructures
- E02F9/10—Supports for movable superstructures mounted on travelling or walking gears or on other superstructures
- E02F9/12—Slewing or traversing gears
- E02F9/121—Turntables, i.e. structure rotatable about 360°
- E02F9/128—Braking systems
-
- 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
- E02F9/2232—Control of flow rate; Load sensing arrangements using one or more variable displacement 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)
- Fluid-Pressure Circuits (AREA)
- Control Of Fluid Gearings (AREA)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18713280A JPS57110857A (en) | 1980-12-27 | 1980-12-27 | Controller of oil hydraulic device |
| DE8181110687T DE3171629D1 (en) | 1980-12-27 | 1981-12-22 | Hydraulic power system |
| US06/333,555 US4571941A (en) | 1980-12-27 | 1981-12-22 | Hydraulic power system |
| EP19810110687 EP0056865B1 (en) | 1980-12-27 | 1981-12-22 | Hydraulic power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18713280A JPS57110857A (en) | 1980-12-27 | 1980-12-27 | Controller of oil hydraulic device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57110857A JPS57110857A (en) | 1982-07-09 |
| JPS6314231B2 true JPS6314231B2 (US20030199744A1-20031023-C00003.png) | 1988-03-30 |
Family
ID=16200678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18713280A Granted JPS57110857A (en) | 1980-12-27 | 1980-12-27 | Controller of oil hydraulic device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57110857A (US20030199744A1-20031023-C00003.png) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6050091A (en) * | 1996-03-27 | 2000-04-18 | Komatsu Ltd. | Brake device for oil hydraulic motor |
-
1980
- 1980-12-27 JP JP18713280A patent/JPS57110857A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57110857A (en) | 1982-07-09 |
