JPH042740B2 - - Google Patents
Info
- Publication number
- JPH042740B2 JPH042740B2 JP4277284A JP4277284A JPH042740B2 JP H042740 B2 JPH042740 B2 JP H042740B2 JP 4277284 A JP4277284 A JP 4277284A JP 4277284 A JP4277284 A JP 4277284A JP H042740 B2 JPH042740 B2 JP H042740B2
- Authority
- JP
- Japan
- Prior art keywords
- swivel
- vehicle body
- valve
- hydraulic
- hydraulic motor
- 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
- 238000009412 basement excavation Methods 0.000 claims description 17
- 238000001514 detection method Methods 0.000 claims description 10
- 239000003921 oil Substances 0.000 description 19
- 230000001360 synchronised effect Effects 0.000 description 17
- 238000012937 correction Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 239000010720 hydraulic oil Substances 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000010959 steel Substances 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
-
- 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
- F15B11/22—Synchronisation of the movement of two or more servomotors
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Operation Control Of Excavators (AREA)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4277284A JPS60188542A (ja) | 1984-03-06 | 1984-03-06 | 掘削機の位置設定機構 |
| DE8585301506T DE3565295D1 (en) | 1984-03-06 | 1985-03-05 | Earth-working machine |
| EP85301506A EP0156546B1 (en) | 1984-03-06 | 1985-03-05 | Earth-working machine |
| US07/622,391 US5135348A (en) | 1984-03-06 | 1990-11-29 | Earth-working machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4277284A JPS60188542A (ja) | 1984-03-06 | 1984-03-06 | 掘削機の位置設定機構 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60188542A JPS60188542A (ja) | 1985-09-26 |
| JPH042740B2 true JPH042740B2 (US07122547-20061017-C00273.png) | 1992-01-20 |
Family
ID=12645259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4277284A Granted JPS60188542A (ja) | 1984-03-06 | 1984-03-06 | 掘削機の位置設定機構 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60188542A (US07122547-20061017-C00273.png) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100866633B1 (ko) | 2007-05-30 | 2008-11-03 | 강남국 | 유압장치 및 이를 이용한 동조 선회 시스템 |
-
1984
- 1984-03-06 JP JP4277284A patent/JPS60188542A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60188542A (ja) | 1985-09-26 |
