DE68923934T2 - Hydraulische steuereinheit für hydraulikbagger. - Google Patents
Hydraulische steuereinheit für hydraulikbagger.Info
- Publication number
- DE68923934T2 DE68923934T2 DE68923934T DE68923934T DE68923934T2 DE 68923934 T2 DE68923934 T2 DE 68923934T2 DE 68923934 T DE68923934 T DE 68923934T DE 68923934 T DE68923934 T DE 68923934T DE 68923934 T2 DE68923934 T2 DE 68923934T2
- Authority
- DE
- Germany
- Prior art keywords
- hydraulic
- control unit
- excavators
- hydraulic control
- hydraulic excavators
- 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
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
- E02F3/80—Component parts
- E02F3/84—Drives or control devices therefor, e.g. hydraulic drive 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
- E02F9/2278—Hydraulic circuits
- E02F9/2296—Systems with a variable displacement pump
-
- 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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/002—Hydraulic systems to change the pump delivery
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63042904A JPH01220706A (ja) | 1988-02-25 | 1988-02-25 | 油圧式掘削機の油圧制御装置 |
PCT/JP1989/000140 WO1989008190A1 (en) | 1988-02-25 | 1989-02-13 | Hydraulic control unit of hydraulic excavators |
Publications (2)
Publication Number | Publication Date |
---|---|
DE68923934D1 DE68923934D1 (de) | 1995-09-28 |
DE68923934T2 true DE68923934T2 (de) | 1996-04-11 |
Family
ID=12649020
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE68923934T Expired - Fee Related DE68923934T2 (de) | 1988-02-25 | 1989-02-13 | Hydraulische steuereinheit für hydraulikbagger. |
Country Status (6)
Country | Link |
---|---|
US (1) | US5077974A (de) |
EP (1) | EP0372081B1 (de) |
JP (1) | JPH01220706A (de) |
KR (1) | KR0141982B1 (de) |
DE (1) | DE68923934T2 (de) |
WO (1) | WO1989008190A1 (de) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07103593B2 (ja) * | 1990-06-06 | 1995-11-08 | 株式会社小松製作所 | 積み込み作業車両の制御装置及び方法 |
JPH04121503U (ja) * | 1991-04-16 | 1992-10-30 | 住友建機株式会社 | 油圧式建設車両の自動昇圧回路 |
US5456077A (en) * | 1994-04-22 | 1995-10-10 | Mcneilus Truck And Manufacturing, Inc. | Remote unloader hydraulic valve system |
US5540049A (en) * | 1995-08-01 | 1996-07-30 | Caterpillar Inc. | Control system and method for a hydraulic actuator with velocity and force modulation control |
JP4026969B2 (ja) * | 1999-01-22 | 2007-12-26 | 株式会社小松製作所 | 建設機械の油圧回路 |
US6408676B1 (en) | 1999-03-31 | 2002-06-25 | Caterpillar Inc. | Method and apparatus for determining the status of a relief valve |
KR100797315B1 (ko) * | 2001-07-16 | 2008-01-23 | 두산인프라코어 주식회사 | 굴삭기의 주행 및 프론트작업의 복합작업용 유압제어장치 |
KR100594851B1 (ko) * | 2002-04-30 | 2006-07-03 | 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 | 유압식 브레이크장치 |
JP4082935B2 (ja) * | 2002-06-05 | 2008-04-30 | 株式会社小松製作所 | ハイブリッド式建設機械 |
KR100988429B1 (ko) * | 2003-12-26 | 2010-10-18 | 두산인프라코어 주식회사 | 굴삭기의 주행복합작업용 유압제어장치 |
KR100988443B1 (ko) * | 2003-12-26 | 2010-10-18 | 두산인프라코어 주식회사 | 굴삭기의 주행 및 프론트작업의 복합동작용 유압제어장치 |
KR100752115B1 (ko) * | 2004-12-30 | 2007-08-24 | 두산인프라코어 주식회사 | 굴삭기의 유압펌프 제어시스템 |
US9086143B2 (en) | 2010-11-23 | 2015-07-21 | Caterpillar Inc. | Hydraulic fan circuit having energy recovery |
CN102140807B (zh) * | 2011-01-11 | 2012-05-23 | 徐州徐工挖掘机械有限公司 | 一种提高挖掘机挖掘操纵特性和平整作业特性的方法 |
CN103352886B (zh) * | 2013-06-28 | 2015-12-23 | 山河智能装备股份有限公司 | 能量回收利用液压控制阀 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE757640A (fr) * | 1969-10-16 | 1971-04-16 | Borg Warner | Systemes hydrauliques, notamment pour la regulation d'une pompea debit variable |
JPS5217795Y2 (de) * | 1971-04-26 | 1977-04-22 | ||
JPS54126146U (de) * | 1978-02-22 | 1979-09-03 | ||
DE3024399A1 (de) * | 1980-06-28 | 1982-01-21 | Linde Ag, 6200 Wiesbaden | Regeleinrichtung fuer ein aggregat aus mehreren, von einer gemeinsamen primaerenergiequelle angetriebenen pumpe |
US4571941A (en) * | 1980-12-27 | 1986-02-25 | Hitachi Construction Machinery Co, Ltd. | Hydraulic power system |
JPS57184749A (en) * | 1981-05-01 | 1982-11-13 | Hitachi Constr Mach Co Ltd | Control device for hydraulic system |
JPS5876853U (ja) * | 1981-11-19 | 1983-05-24 | 株式会社小松製作所 | 油圧駆動装置 |
US4481770A (en) * | 1982-03-22 | 1984-11-13 | Caterpillar Tractor Co. | Fluid system with flow compensated torque control |
JPH0633772B2 (ja) * | 1983-12-29 | 1994-05-02 | カヤバ工業株式会社 | 可変容量ポンプの制御装置 |
JPS60250132A (ja) * | 1984-05-25 | 1985-12-10 | Kayaba Ind Co Ltd | 建設車両の油圧制御回路 |
JPS6193552A (ja) * | 1984-10-15 | 1986-05-12 | Matsushita Electric Works Ltd | 充電式電気機器 |
JPS6193552U (de) * | 1984-11-27 | 1986-06-17 | ||
JPS6256801A (ja) * | 1985-09-06 | 1987-03-12 | Toshiba Corp | 曲り導体のピツチ間距離測定器 |
JPS6256801U (de) * | 1985-09-30 | 1987-04-08 | ||
JPS62167880A (ja) * | 1986-01-20 | 1987-07-24 | Nippon Kokan Kk <Nkk> | 管内外面のコ−テイング装置 |
JPH0740702Y2 (ja) * | 1986-04-11 | 1995-09-20 | 株式会社小松製作所 | 移動式建設機械の油圧駆動装置 |
-
1988
- 1988-02-25 JP JP63042904A patent/JPH01220706A/ja active Pending
-
1989
- 1989-02-13 DE DE68923934T patent/DE68923934T2/de not_active Expired - Fee Related
- 1989-02-13 US US07/425,207 patent/US5077974A/en not_active Expired - Fee Related
- 1989-02-13 WO PCT/JP1989/000140 patent/WO1989008190A1/ja active IP Right Grant
- 1989-02-13 KR KR1019890701117A patent/KR0141982B1/ko not_active IP Right Cessation
- 1989-02-13 EP EP89902300A patent/EP0372081B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
KR0141982B1 (ko) | 1999-02-18 |
EP0372081A4 (de) | 1994-03-16 |
WO1989008190A1 (en) | 1989-09-08 |
KR900700699A (ko) | 1990-08-16 |
DE68923934D1 (de) | 1995-09-28 |
EP0372081A1 (de) | 1990-06-13 |
US5077974A (en) | 1992-01-07 |
JPH01220706A (ja) | 1989-09-04 |
EP0372081B1 (de) | 1995-08-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |