CN101213375A - 流体压力回路 - Google Patents
流体压力回路 Download PDFInfo
- Publication number
- CN101213375A CN101213375A CNA2007800000565A CN200780000056A CN101213375A CN 101213375 A CN101213375 A CN 101213375A CN A2007800000565 A CNA2007800000565 A CN A2007800000565A CN 200780000056 A CN200780000056 A CN 200780000056A CN 101213375 A CN101213375 A CN 101213375A
- Authority
- CN
- China
- Prior art keywords
- valve
- pump
- guiding valve
- actuator
- group
- 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.)
- Granted
Links
Images
Classifications
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- 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
- E02F9/2221—Control of flow rate; Load sensing arrangements
- E02F9/2225—Control of flow rate; Load sensing arrangements using pressure-compensating valves
- E02F9/2228—Control of flow rate; Load sensing arrangements using pressure-compensating valves 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
- E02F9/2221—Control of flow rate; Load sensing arrangements
- E02F9/2239—Control of flow rate; Load sensing arrangements using two or more pumps with cross-assistance
- E02F9/2242—Control of flow rate; Load sensing arrangements using two or more pumps with cross-assistance 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
- E02F9/2285—Pilot-operated 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
- E02F9/2292—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
-
- 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
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
- F15B11/05—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed specially adapted to maintain constant speed, e.g. pressure-compensated, load-responsive
- F15B11/055—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed specially adapted to maintain constant speed, e.g. pressure-compensated, load-responsive by adjusting the pump output or bypass
-
- 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
-
- 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
- F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20546—Type of pump variable capacity
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/20576—Systems with pumps with multiple pumps
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/32—Directional control characterised by the type of actuation
- F15B2211/329—Directional control characterised by the type of actuation actuated by fluid pressure
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/405—Flow control characterised by the type of flow control means or valve
- F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/45—Control of bleed-off flow, e.g. control of bypass flow to the return line
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/6306—Electronic controllers using input signals representing a pressure
- F15B2211/6313—Electronic controllers using input signals representing a pressure the pressure being a load pressure
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/635—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements
- F15B2211/6355—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements having valve means
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
- F15B2211/7142—Multiple output members, e.g. multiple hydraulic motors or cylinders the output members being arranged in multiple groups
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/78—Control of multiple output members
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/86493—Multi-way valve unit
- Y10T137/86574—Supply and exhaust
- Y10T137/86582—Pilot-actuated
- Y10T137/86614—Electric
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/87169—Supply and exhaust
- Y10T137/87193—Pilot-actuated
- Y10T137/87209—Electric
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Operation Control Of Excavators (AREA)
Abstract
Description
Claims (4)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP208554/2006 | 2006-07-31 | ||
JP2006208554A JP2008032175A (ja) | 2006-07-31 | 2006-07-31 | 流体圧回路 |
PCT/JP2007/053029 WO2008015802A1 (fr) | 2006-07-31 | 2007-02-20 | Circuit à pression fluidique |
Publications (2)
Publication Number | Publication Date |
---|---|
CN101213375A true CN101213375A (zh) | 2008-07-02 |
CN101213375B CN101213375B (zh) | 2010-08-11 |
Family
ID=38996988
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2007800000565A Expired - Fee Related CN101213375B (zh) | 2006-07-31 | 2007-02-20 | 流体压力回路 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7958907B2 (zh) |
EP (1) | EP2048369A4 (zh) |
JP (1) | JP2008032175A (zh) |
CN (1) | CN101213375B (zh) |
WO (1) | WO2008015802A1 (zh) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102473015A (zh) * | 2009-07-09 | 2012-05-23 | 诺格伦有限责任公司 | 包括多个压力开关的压力监测系统 |
CN102797273A (zh) * | 2012-09-07 | 2012-11-28 | 三一重机有限公司 | 一种挖掘机工作装置先导压力采集系统及方法及挖掘机 |
CN102995697A (zh) * | 2011-09-15 | 2013-03-27 | 住友建机株式会社 | 施工机械的液压回路 |
CN103498491A (zh) * | 2013-09-29 | 2014-01-08 | 山河智能装备股份有限公司 | 一种挖掘机的斗杆优先控制回路及其控制方法 |
CN105518312A (zh) * | 2013-09-13 | 2016-04-20 | Kyb株式会社 | 流体压控制装置 |
CN106382271A (zh) * | 2016-10-18 | 2017-02-08 | 浙江大学 | 一种高速开关阀先导控制的双阀芯可编程控制液压阀及其方法 |
CN107131165A (zh) * | 2016-02-26 | 2017-09-05 | 株式会社京浜 | 电磁阀和压力流体控制设备 |
CN114644299A (zh) * | 2020-12-17 | 2022-06-21 | 株式会社小仓 | 液压工作装置 |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090090102A1 (en) * | 2006-05-03 | 2009-04-09 | Wilfred Busse | Method of reducing the load of one or more engines in a large hydraulic excavator |
JP5067290B2 (ja) * | 2008-07-15 | 2012-11-07 | コベルコ建機株式会社 | 作業機械 |
JP2010236607A (ja) * | 2009-03-31 | 2010-10-21 | Caterpillar Sarl | 建設機械における油圧制御回路 |
US20110056192A1 (en) * | 2009-09-10 | 2011-03-10 | Robert Weber | Technique for controlling pumps in a hydraulic system |
US20110056194A1 (en) * | 2009-09-10 | 2011-03-10 | Bucyrus International, Inc. | Hydraulic system for heavy equipment |
US8718845B2 (en) | 2010-10-06 | 2014-05-06 | Caterpillar Global Mining Llc | Energy management system for heavy equipment |
US8606451B2 (en) | 2010-10-06 | 2013-12-10 | Caterpillar Global Mining Llc | Energy system for heavy equipment |
US8626403B2 (en) | 2010-10-06 | 2014-01-07 | Caterpillar Global Mining Llc | Energy management and storage system |
US8621860B2 (en) | 2010-10-22 | 2014-01-07 | Cnh America Llc | Control system for work vehicle |
CN103221695B (zh) * | 2010-11-30 | 2015-11-25 | 沃尔沃建造设备有限公司 | 用于施工机械的液压泵控制系统 |
US9217235B2 (en) * | 2012-05-30 | 2015-12-22 | Caterpillar Inc. | Tool coupler system having multiple pressure sources |
CN102767196B (zh) * | 2012-07-31 | 2014-10-22 | 徐州徐工挖掘机械有限公司 | 一种挖掘机液压油合流的控制装置 |
US9190852B2 (en) | 2012-09-21 | 2015-11-17 | Caterpillar Global Mining Llc | Systems and methods for stabilizing power rate of change within generator based applications |
US9527367B2 (en) * | 2014-04-14 | 2016-12-27 | L & B Manufacturing, Inc. | Pneumatic actuators |
EP3425211B1 (en) * | 2016-09-28 | 2021-05-05 | Hitachi Construction Machinery Co., Ltd. | Work vehicle with confluence control device |
US10227951B2 (en) | 2017-02-02 | 2019-03-12 | Woodward, Inc. | Limited flow thrust reverser actuating |
CN106762920B (zh) * | 2017-03-23 | 2019-01-15 | 陕西奥力信工程机械有限公司 | 一种带有动力切换阀的液压系统 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4638720A (en) * | 1980-12-01 | 1987-01-27 | Deere & Company | Electro-hydraulic control system |
JPS58153831A (ja) * | 1982-03-10 | 1983-09-13 | Mitsubishi Heavy Ind Ltd | 油圧シヨベルの油圧回路装置 |
US5125232A (en) * | 1990-05-29 | 1992-06-30 | Kubota Corporation | Control change system for a hydraulic working vehicle |
JP2727819B2 (ja) | 1991-09-18 | 1998-03-18 | 三菱電機株式会社 | Cad/cam装置 |
JP3524936B2 (ja) * | 1992-01-15 | 2004-05-10 | キャタピラー インコーポレイテッド | 油圧駆動車両用の冗長制御装置 |
JP2558505Y2 (ja) * | 1992-04-03 | 1997-12-24 | 新キャタピラー三菱株式会社 | 油圧式破砕機を有する油圧式建設機械 |
JP3236491B2 (ja) * | 1994-12-26 | 2001-12-10 | 日立建機株式会社 | 建設機械の油圧システム |
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 |
JP3244257B2 (ja) * | 1995-12-28 | 2002-01-07 | 新キャタピラー三菱株式会社 | 作業機械の作業機制御回路 |
JP3750841B2 (ja) * | 1998-11-12 | 2006-03-01 | 新キャタピラー三菱株式会社 | 作業機械における油圧制御装置 |
US6431050B1 (en) * | 2000-06-26 | 2002-08-13 | Caterpillar Inc. | Apparatus for multiplexing a plurality of hydraulic cylinders |
JP3901470B2 (ja) * | 2001-05-15 | 2007-04-04 | 新キャタピラー三菱株式会社 | 流体圧回路の制御システム |
JP3964800B2 (ja) | 2003-02-12 | 2007-08-22 | 新キャタピラー三菱株式会社 | 作業機械の油圧回路 |
KR100752115B1 (ko) * | 2004-12-30 | 2007-08-24 | 두산인프라코어 주식회사 | 굴삭기의 유압펌프 제어시스템 |
-
2006
- 2006-07-31 JP JP2006208554A patent/JP2008032175A/ja active Pending
-
2007
- 2007-02-20 CN CN2007800000565A patent/CN101213375B/zh not_active Expired - Fee Related
- 2007-02-20 WO PCT/JP2007/053029 patent/WO2008015802A1/ja active Application Filing
- 2007-02-20 EP EP07737288A patent/EP2048369A4/en not_active Withdrawn
- 2007-02-20 US US12/065,112 patent/US7958907B2/en not_active Expired - Fee Related
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102473015A (zh) * | 2009-07-09 | 2012-05-23 | 诺格伦有限责任公司 | 包括多个压力开关的压力监测系统 |
CN102473015B (zh) * | 2009-07-09 | 2016-01-13 | 诺格伦有限责任公司 | 包括多个压力开关的压力监测系统 |
CN102995697A (zh) * | 2011-09-15 | 2013-03-27 | 住友建机株式会社 | 施工机械的液压回路 |
CN102995697B (zh) * | 2011-09-15 | 2015-02-11 | 住友建机株式会社 | 施工机械的液压回路 |
CN102797273A (zh) * | 2012-09-07 | 2012-11-28 | 三一重机有限公司 | 一种挖掘机工作装置先导压力采集系统及方法及挖掘机 |
CN105518312A (zh) * | 2013-09-13 | 2016-04-20 | Kyb株式会社 | 流体压控制装置 |
US9874232B2 (en) | 2013-09-13 | 2018-01-23 | Kyb Corporation | Fluid pressure control apparatus |
CN103498491A (zh) * | 2013-09-29 | 2014-01-08 | 山河智能装备股份有限公司 | 一种挖掘机的斗杆优先控制回路及其控制方法 |
CN103498491B (zh) * | 2013-09-29 | 2015-08-19 | 山河智能装备股份有限公司 | 一种挖掘机的斗杆优先控制回路及其控制方法 |
CN107131165A (zh) * | 2016-02-26 | 2017-09-05 | 株式会社京浜 | 电磁阀和压力流体控制设备 |
CN106382271A (zh) * | 2016-10-18 | 2017-02-08 | 浙江大学 | 一种高速开关阀先导控制的双阀芯可编程控制液压阀及其方法 |
CN106382271B (zh) * | 2016-10-18 | 2017-12-26 | 浙江大学 | 一种高速开关阀先导控制的双阀芯可编程控制液压阀及其方法 |
CN114644299A (zh) * | 2020-12-17 | 2022-06-21 | 株式会社小仓 | 液压工作装置 |
Also Published As
Publication number | Publication date |
---|---|
JP2008032175A (ja) | 2008-02-14 |
CN101213375B (zh) | 2010-08-11 |
US7958907B2 (en) | 2011-06-14 |
US20090159143A1 (en) | 2009-06-25 |
WO2008015802A1 (fr) | 2008-02-07 |
EP2048369A4 (en) | 2011-02-23 |
EP2048369A1 (en) | 2009-04-15 |
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