GB2394318B - Control unit for construction machine - Google Patents
Control unit for construction machineInfo
- Publication number
- GB2394318B GB2394318B GB0401137A GB0401137A GB2394318B GB 2394318 B GB2394318 B GB 2394318B GB 0401137 A GB0401137 A GB 0401137A GB 0401137 A GB0401137 A GB 0401137A GB 2394318 B GB2394318 B GB 2394318B
- Authority
- GB
- United Kingdom
- Prior art keywords
- control unit
- construction machine
- construction
- machine
- unit
- 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 - Fee Related
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
- E02F9/2221—Control of flow rate; Load sensing arrangements
- E02F9/2232—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps
- E02F9/2235—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps 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
- E02F9/2246—Control of prime movers, e.g. depending on the hydraulic load of work tools
-
- 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)
- 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)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP29732899A JP3390707B2 (en) | 1999-10-19 | 1999-10-19 | Control equipment for construction machinery |
GB0020627A GB2355544B (en) | 1999-10-19 | 2000-08-21 | Control unit for construction machine |
Publications (3)
Publication Number | Publication Date |
---|---|
GB0401137D0 GB0401137D0 (en) | 2004-02-18 |
GB2394318A GB2394318A (en) | 2004-04-21 |
GB2394318B true GB2394318B (en) | 2004-06-09 |
Family
ID=32031867
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB0401135A Expired - Fee Related GB2394317B (en) | 1999-10-19 | 2000-08-21 | Control unit for construction machine |
GB0401133A Expired - Fee Related GB2394316B (en) | 1999-10-19 | 2000-08-21 | Control unit for construction machine |
GB0401137A Expired - Fee Related GB2394318B (en) | 1999-10-19 | 2000-08-21 | Control unit for construction machine |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB0401135A Expired - Fee Related GB2394317B (en) | 1999-10-19 | 2000-08-21 | Control unit for construction machine |
GB0401133A Expired - Fee Related GB2394316B (en) | 1999-10-19 | 2000-08-21 | Control unit for construction machine |
Country Status (1)
Country | Link |
---|---|
GB (3) | GB2394317B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102705211B (en) * | 2012-06-29 | 2015-12-23 | 山河智能装备股份有限公司 | A kind of variable pump small displacement and little pressure control loop and control method thereof |
JP6603568B2 (en) * | 2015-12-14 | 2019-11-06 | 川崎重工業株式会社 | Hydraulic drive system |
US10233951B2 (en) * | 2016-10-05 | 2019-03-19 | Caterpillar Inc. | Method to detect uncommanded spool valve positioning and stop fluid flow to hydraulic actuators |
CN112065787B (en) * | 2020-09-27 | 2023-11-03 | 中铁工程装备集团有限公司 | Hydraulic control system of cantilever development machine excavating device |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4838756A (en) * | 1987-02-19 | 1989-06-13 | Deere & Company | Hydraulic system for an industrial machine |
US5323611A (en) * | 1989-08-30 | 1994-06-28 | Kabushiki Kaisha Komatsu Seisakusho | Speed change controller of running hydraulic motor |
GB2251962B (en) * | 1990-11-13 | 1995-05-24 | Samsung Heavy Ind | System for automatically controlling an operation of a heavy construction |
JP3220579B2 (en) * | 1993-10-05 | 2001-10-22 | 新キャタピラー三菱株式会社 | Hydraulic system control method for construction machinery |
JP3441834B2 (en) * | 1995-04-05 | 2003-09-02 | 日立建機株式会社 | Drive control device for construction machinery |
JP2001123480A (en) * | 1999-10-28 | 2001-05-08 | Sumitomo Constr Mach Co Ltd | Travel speed switching device for hydraulic excavator |
-
2000
- 2000-08-21 GB GB0401135A patent/GB2394317B/en not_active Expired - Fee Related
- 2000-08-21 GB GB0401133A patent/GB2394316B/en not_active Expired - Fee Related
- 2000-08-21 GB GB0401137A patent/GB2394318B/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
GB2394316A (en) | 2004-04-21 |
GB0401137D0 (en) | 2004-02-18 |
GB0401133D0 (en) | 2004-02-18 |
GB2394318A (en) | 2004-04-21 |
GB2394316B (en) | 2004-06-09 |
GB2394317A (en) | 2004-04-21 |
GB0401135D0 (en) | 2004-02-18 |
GB2394317B (en) | 2004-06-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20180821 |