KR900010160A - 건설기계의 유압구동 제어장치 - Google Patents
건설기계의 유압구동 제어장치 Download PDFInfo
- Publication number
- KR900010160A KR900010160A KR1019890019772A KR890019772A KR900010160A KR 900010160 A KR900010160 A KR 900010160A KR 1019890019772 A KR1019890019772 A KR 1019890019772A KR 890019772 A KR890019772 A KR 890019772A KR 900010160 A KR900010160 A KR 900010160A
- Authority
- KR
- South Korea
- Prior art keywords
- pressure
- hydraulic pump
- drive control
- selecting
- hydraulic drive
- Prior art date
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
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
-
- 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
-
- 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
- E02F9/2278—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)
- Mechanical Engineering (AREA)
- Operation Control Of Excavators (AREA)
Abstract
Description
Claims (5)
- 최소한 1대의 가변용량형의 유압펌프(1a 또는 1b)와, 이 유압펌프의 압유에 의해 구동되는 복수의 액튜에이터(5a1-5b3)와, 조작수단(8a1-8b3)의 조작량에 따라 구동되고, 각 액튜에이터를 제어하는 방향전환밸브(7a1-7b3)와, 상기 유압펌프의 토출압력을 검출하는 수단(16a 또는 16b)과, 상기 액튜에이터의 부하압력중 최고압력을 선택하는 수단(11ab)과, 상기 토출압력과 상기 최고부하압력과의 차압이 규정압력이 되도록 상기 유압펌프의 용량을 제어하는 제1의 제어수단(20,S3-S7)을 구비한 건설기계의 유압구동제어장치에 있어서, 상기 유압펌프(1a 또는 1b)의 토출압력이 소정의 값이 되도록 상기 유압펌프의 용량을 제어하는 제2개의 제어수단(20,S9-S14)과 상기 유압펌프의 용량의 제어모드를 선택하고, 대응하는 지령신호를 출력하는 제1의 지령수단(18)과, 상기 제1의 지령수단으로부터의 지령신호에 따라 상기 제1 및 제2의 제어수단의 한쪽을 선택하는 제1의 선택수단(S2)을 설치한 것을 특징으로 하는 건설기계의유압구동제어장치.
- 제1항에 있어서, 상기 액튜에이터(5a1-5b3)의 소정의 것에 대한 조작수단(8a1-8b3)이 조작되었는지 여부를 판단하고, 조작되었을 때에 상기 제2의 제어수단(20,S9-S14)을 선택하고, 기타의 액튜에이터에 대한 조작수단이 조작되었을 때에 상기 제1의 제어수단(20,S3-S7)을 선택하는 제2의 선택수단(S8)을 다시 배설한 것을 특징으로 하는 건설기계의 유압구동제어장치.
- 제1항에 있어서, 상기 제2의 제어수단(20,S9-S14)은 상기 조작수단의 조작량이 증대함에 따라 증대하도록 목표압력(Pr)을 설정한 제1의 설정수단(S9)을 가지며, 이제 1의 설정수단으로부터 조작량에 대응한 목표압력(Pr)을 구하여, 상기 소정의 값을 결정하는 것을 특징으로 하는 건설기계의 유압구동제어장치.
- 제1항에 있어서, 상기 제2의 제어수단(20,S9-S14, S16-S20)은 일정한 목표압력(Pr)을 설정한 제2의 설정수단(S17,S20)을 가지며, 이 일정한 목표치를 상기 소정의 값으로 하는 것을 특징으로 하는 건설기계의 유압구동제어장치.
- 제1항에 있어서, 상기 유압펌프(1a 또는 1b)의 토출압력의 목표치를 선택하고, 대응하는 지령신호를 출력하는 제2의 지령수단(19)을 다시 배설하고, 상기 제2의 제어수단(20,S9-S14, S16-S20)은 상기 제2의 지령수단으로부터의 지령신호에 따라 변화하도록 목표압력(Pr)을 설정한 제3의 설정수단(S19)을 가지며, 이 제3의 설정수단으로부터 상기 지령신호에 대응한 목표압력을 구하여, 상기 소정의 값을 결정하는 것을 특징으로 하는 건설기계의 유압구동제어장치.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP88-333621 | 1988-12-29 | ||
JP33362188 | 1988-12-29 | ||
JP333621 | 1988-12-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR900010160A true KR900010160A (ko) | 1990-07-06 |
KR930008638B1 KR930008638B1 (ko) | 1993-09-11 |
Family
ID=18268101
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019890019772A KR930008638B1 (ko) | 1988-12-29 | 1989-12-28 | 건설기계의 유압구동 제어장치 |
Country Status (4)
Country | Link |
---|---|
US (1) | US5048293A (ko) |
EP (1) | EP0376295B1 (ko) |
KR (1) | KR930008638B1 (ko) |
DE (1) | DE68909393T2 (ko) |
Families Citing this family (66)
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WO1990009528A1 (en) * | 1989-02-20 | 1990-08-23 | Hitachi Construction Machinery Co., Ltd. | Hydraulic circuit for working machines |
US5209063A (en) * | 1989-05-24 | 1993-05-11 | Kabushiki Kaisha Komatsu Seisakusho | Hydraulic circuit utilizing a compensator pressure selecting value |
JPH0826552B2 (ja) * | 1989-07-27 | 1996-03-13 | 株式会社小松製作所 | 建設機械のポンプ吐出量制御システム |
EP0551513A1 (en) * | 1990-02-28 | 1993-07-21 | Hitachi Construction Machinery Co., Ltd. | Hydraulic drive system in construction machine |
DE69128708T2 (de) * | 1990-09-11 | 1998-08-20 | Hitachi Construction Machinery | Hydraulisches steuerungssystem für erdbaumaschine |
GB2251232B (en) * | 1990-09-29 | 1995-01-04 | Samsung Heavy Ind | Automatic actuating system for actuators of excavator |
GB2250611B (en) * | 1990-11-24 | 1995-05-17 | Samsung Heavy Ind | System for automatically controlling quantity of hydraulic fluid of an excavator |
DK0515608T3 (da) * | 1990-12-15 | 1995-06-12 | Barmag Barmer Maschf | Hydrauliksystem |
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US5167121A (en) * | 1991-06-25 | 1992-12-01 | University Of British Columbia | Proportional hydraulic control |
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US5193342A (en) * | 1992-02-14 | 1993-03-16 | Applied Power Inc. | Proportional speed control of fluid power devices |
JP2592860Y2 (ja) * | 1992-09-30 | 1999-03-31 | 株式会社 神崎高級工機製作所 | 車軸駆動装置 |
US5337561A (en) * | 1992-11-17 | 1994-08-16 | Flow International Corporation | Ultra high pressure multiple intensifier system |
US5270626A (en) * | 1992-11-25 | 1993-12-14 | Samsung Heavy Industries Co., Ltd. | Method of controlling multitasking excavator system |
EP0644335B1 (en) * | 1993-03-23 | 2002-09-04 | Hitachi Construction Machinery Co., Ltd. | Hydraulic drive for hydraulic work machine |
EP0695875B1 (en) * | 1993-11-30 | 2001-06-20 | Hitachi Construction Machinery Co., Ltd. | Hydraulic pump controller |
US5471908A (en) * | 1994-02-16 | 1995-12-05 | Case Corporation | Hydraulic system for backhoe |
JP3511425B2 (ja) * | 1995-09-18 | 2004-03-29 | 日立建機株式会社 | 油圧システム |
JP3210221B2 (ja) * | 1995-10-11 | 2001-09-17 | 新キャタピラー三菱株式会社 | 建設機械の制御回路 |
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JP3517817B2 (ja) * | 1997-02-24 | 2004-04-12 | 新キャタピラー三菱株式会社 | 油圧パイロット回路 |
JP4067596B2 (ja) * | 1997-03-07 | 2008-03-26 | 日立建機株式会社 | 建設機械の油圧制御装置 |
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DE20002820U1 (de) * | 2000-02-16 | 2000-05-25 | Igus Spritzgußteile für die Industrie GmbH, 51147 Köln | Energieführungskette |
JP3649139B2 (ja) * | 2001-03-15 | 2005-05-18 | コベルコ建機株式会社 | 走行制御装置 |
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JP5562893B2 (ja) * | 2011-03-31 | 2014-07-30 | 住友建機株式会社 | ショベル |
US8863509B2 (en) | 2011-08-31 | 2014-10-21 | Caterpillar Inc. | Meterless hydraulic system having load-holding bypass |
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US8944103B2 (en) | 2011-08-31 | 2015-02-03 | Caterpillar Inc. | Meterless hydraulic system having displacement control valve |
US9151018B2 (en) | 2011-09-30 | 2015-10-06 | Caterpillar Inc. | Closed-loop hydraulic system having energy recovery |
US9051714B2 (en) | 2011-09-30 | 2015-06-09 | Caterpillar Inc. | Meterless hydraulic system having multi-actuator circuit |
US9057389B2 (en) | 2011-09-30 | 2015-06-16 | Caterpillar Inc. | Meterless hydraulic system having multi-actuator circuit |
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US8978374B2 (en) | 2011-10-21 | 2015-03-17 | Caterpillar Inc. | Meterless hydraulic system having flow sharing and combining functionality |
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US9080310B2 (en) | 2011-10-21 | 2015-07-14 | Caterpillar Inc. | Closed-loop hydraulic system having regeneration configuration |
US8984873B2 (en) | 2011-10-21 | 2015-03-24 | Caterpillar Inc. | Meterless hydraulic system having flow sharing and combining functionality |
US8919114B2 (en) | 2011-10-21 | 2014-12-30 | Caterpillar Inc. | Closed-loop hydraulic system having priority-based sharing |
US8943819B2 (en) | 2011-10-21 | 2015-02-03 | Caterpillar Inc. | Hydraulic system |
US9068578B2 (en) | 2011-10-21 | 2015-06-30 | Caterpillar Inc. | Hydraulic system having flow combining capabilities |
US8910474B2 (en) | 2011-10-21 | 2014-12-16 | Caterpillar Inc. | Hydraulic system |
US20150075148A1 (en) * | 2012-05-18 | 2015-03-19 | Kenpei Yamaji | Hydraulic control system |
US9279236B2 (en) | 2012-06-04 | 2016-03-08 | Caterpillar Inc. | Electro-hydraulic system for recovering and reusing potential energy |
US9290912B2 (en) | 2012-10-31 | 2016-03-22 | Caterpillar Inc. | Energy recovery system having integrated boom/swing circuits |
US9037360B2 (en) | 2012-12-21 | 2015-05-19 | Cnh Industrial America Llc | Load control for a machine with a dual path electronically controlled hydrostatic transmission |
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JP6656913B2 (ja) * | 2015-12-24 | 2020-03-04 | 株式会社クボタ | 作業機の油圧システム |
US10385892B2 (en) * | 2016-12-20 | 2019-08-20 | Caterpillar Global Mining Llc | System and method for providing hydraulic power |
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-
1989
- 1989-12-21 US US07/454,387 patent/US5048293A/en not_active Expired - Fee Related
- 1989-12-28 EP EP89124044A patent/EP0376295B1/en not_active Expired - Lifetime
- 1989-12-28 DE DE89124044T patent/DE68909393T2/de not_active Expired - Fee Related
- 1989-12-28 KR KR1019890019772A patent/KR930008638B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE68909393D1 (de) | 1993-10-28 |
EP0376295A1 (en) | 1990-07-04 |
US5048293A (en) | 1991-09-17 |
EP0376295B1 (en) | 1993-09-22 |
KR930008638B1 (ko) | 1993-09-11 |
DE68909393T2 (de) | 1994-01-13 |
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