JPH0412335B2 - - Google Patents
Info
- Publication number
- JPH0412335B2 JPH0412335B2 JP58240868A JP24086883A JPH0412335B2 JP H0412335 B2 JPH0412335 B2 JP H0412335B2 JP 58240868 A JP58240868 A JP 58240868A JP 24086883 A JP24086883 A JP 24086883A JP H0412335 B2 JPH0412335 B2 JP H0412335B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- directional
- hydraulic pump
- boom
- hydraulic
- 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 - Lifetime
Links
- 238000011144 upstream manufacturing Methods 0.000 claims description 8
- 239000003921 oil Substances 0.000 description 53
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000035939 shock Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000000034 method Methods 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
- E02F9/20—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
- E02F9/2221—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
- E02F9/2285—Pilot-operated systems
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)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58240868A JPS60133128A (ja) | 1983-12-22 | 1983-12-22 | 油圧掘削機の油圧回路 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58240868A JPS60133128A (ja) | 1983-12-22 | 1983-12-22 | 油圧掘削機の油圧回路 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS60133128A JPS60133128A (ja) | 1985-07-16 |
JPH0412335B2 true JPH0412335B2 (US20030199744A1-20031023-C00003.png) | 1992-03-04 |
Family
ID=17065889
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP58240868A Granted JPS60133128A (ja) | 1983-12-22 | 1983-12-22 | 油圧掘削機の油圧回路 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60133128A (US20030199744A1-20031023-C00003.png) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002022969A1 (fr) * | 2000-09-12 | 2002-03-21 | Yanmar Co., Ltd. | Circuit hydraulique de vehicule servant a realiser des operations d'excavation et de pivotement |
EP2677210B1 (en) * | 2012-06-19 | 2016-04-20 | Turner Powertrain Systems Limited | Gearbox hydraulic circuit |
JP6723896B2 (ja) * | 2016-10-25 | 2020-07-15 | 株式会社竹内製作所 | 油圧式走行装置 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5370284A (en) * | 1976-12-03 | 1978-06-22 | Caterpillar Tractor Co | Hydraulic device |
-
1983
- 1983-12-22 JP JP58240868A patent/JPS60133128A/ja active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5370284A (en) * | 1976-12-03 | 1978-06-22 | Caterpillar Tractor Co | Hydraulic device |
Also Published As
Publication number | Publication date |
---|---|
JPS60133128A (ja) | 1985-07-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term |