JP2008032175A - 流体圧回路 - Google Patents
流体圧回路 Download PDFInfo
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- JP2008032175A JP2008032175A JP2006208554A JP2006208554A JP2008032175A JP 2008032175 A JP2008032175 A JP 2008032175A JP 2006208554 A JP2006208554 A JP 2006208554A JP 2006208554 A JP2006208554 A JP 2006208554A JP 2008032175 A JP2008032175 A JP 2008032175A
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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
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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
- E02F9/2225—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
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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
- E02F9/2239—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
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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
- E02F9/2278—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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
【解決手段】コントロールバルブ16は、ドライブポンプ12から作動流体の供給を受ける第1グループの複数のスプールとアイドルポンプ13から作動流体の供給を受ける第2グループの複数のスプールとを内蔵する。電磁切換弁装置27は、第1の圧力スイッチ28によるスプール作動検出時は第2グループのツール制御用スプール16at2のパイロットラインを連通状態に切換えるとともに、第2の圧力スイッチ29によるスプール作動検出時は第1グループのツール制御用スプール16at1のパイロットラインを連通状態に切換える。
【選択図】図1
Description
PL1,PL2,PL3,PL4 パイロットライン
3 作業装置
4 ブーム
4bm 第1アクチュエータとしてのブームシリンダ
5 スティック
5st 第2アクチュエータとしてのスティックシリンダ
6 アタッチメントツール
6at 特定アクチュエータとしてのツール用アクチュエータ
12 第1のポンプとしてのドライブポンプ
13 第2のポンプとしてのアイドルポンプ
16 コントロールバルブ
16bm,16at1 第1グループのスプール
16st,16at2 第2グループのスプール
16at1,16at2 特定スプールとしてのツール制御用スプール
16bm 他のスプールとしてのブーム用スプール
16st 他のスプールとしてのスティック用スプール
22,23 パイロットバルブ
27 電磁切換弁装置
27e1,27e2,27e3,27e4 電磁切換弁としての電磁比例弁
27s1,27s2,27s3,27s4 電磁切換弁
28 第1の検出器としての圧力スイッチ
29 第2の検出器としての圧力スイッチ
Claims (4)
- 第1のポンプから作動流体の供給を受ける第1グループの複数のスプールと第2のポンプから作動流体の供給を受ける第2グループの複数のスプールとを内蔵し、第1グループの特定スプールおよび第2グループの特定スプールを経て特定アクチュエータに作動流体を供給可能であり、第1グループの他のスプールを経て第1アクチュエータに作動流体を供給可能であり、第2グループの他のスプールを経て第2アクチュエータに作動流体を供給可能であるコントロールバルブと、
コントロールバルブの各スプールをパイロットラインを介してパイロット操作するパイロットバルブと、
コントロールバルブの第1グループの他のスプールの作動を検出する第1の検出器と、
コントロールバルブの第2グループの他のスプールの作動を検出する第2の検出器と、
第1の検出器によるスプール作動検出時は第2グループの特定スプールのパイロットラインを遮断状態から連通状態に切換えるとともに、第2の検出器によるスプール作動検出時は第1グループの特定スプールのパイロットラインを遮断状態から連通状態に切換える電磁切換弁装置と
を具備したことを特徴とする流体圧回路。 - 電磁切換弁装置は、第1グループの特定スプールの両端に接続された2本のパイロットラインと、第2グループの特定スプールの両端に接続された2本のパイロットラインとにそれぞれ対応する4個の電磁切換弁を備えた
ことを特徴とする請求項1記載の流体圧回路。 - 電磁切換弁は、入力電気信号に応じて変位する電磁比例弁である
ことを特徴とする請求項2記載の流体圧回路。 - 第1アクチュエータは、作業機械における作業装置のブームを作動するブームシリンダであり、
第2アクチュエータは、ブームの先端に連結されたスティックを作動するスティックシリンダであり、
特定アクチュエータは、スティックの先端に連結されたアタッチメントツールを作動するツール用アクチュエータである
ことを特徴とする請求項1乃至3のいずれか記載の流体圧回路。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006208554A JP2008032175A (ja) | 2006-07-31 | 2006-07-31 | 流体圧回路 |
US12/065,112 US7958907B2 (en) | 2006-07-31 | 2007-02-20 | Fluid pressure circuit |
CN2007800000565A CN101213375B (zh) | 2006-07-31 | 2007-02-20 | 流体压力回路 |
PCT/JP2007/053029 WO2008015802A1 (fr) | 2006-07-31 | 2007-02-20 | Circuit à pression fluidique |
EP07737288A EP2048369A4 (en) | 2006-07-31 | 2007-02-20 | FLUIDIC PRESSURE CIRCUIT |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006208554A JP2008032175A (ja) | 2006-07-31 | 2006-07-31 | 流体圧回路 |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2008032175A true JP2008032175A (ja) | 2008-02-14 |
Family
ID=38996988
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006208554A Pending JP2008032175A (ja) | 2006-07-31 | 2006-07-31 | 流体圧回路 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7958907B2 (ja) |
EP (1) | EP2048369A4 (ja) |
JP (1) | JP2008032175A (ja) |
CN (1) | CN101213375B (ja) |
WO (1) | WO2008015802A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010025146A (ja) * | 2008-07-15 | 2010-02-04 | Kobelco Contstruction Machinery Ltd | 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 |
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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 |
EP2452243B1 (en) * | 2009-07-09 | 2020-04-15 | Norgren GmbH | Pressure monitoring system including multiple pressure switches |
US20110056194A1 (en) * | 2009-09-10 | 2011-03-10 | Bucyrus International, Inc. | Hydraulic system for heavy equipment |
US20110056192A1 (en) * | 2009-09-10 | 2011-03-10 | Robert Weber | Technique for controlling pumps in a hydraulic system |
US8606451B2 (en) | 2010-10-06 | 2013-12-10 | Caterpillar Global Mining Llc | Energy system for heavy equipment |
US8718845B2 (en) | 2010-10-06 | 2014-05-06 | Caterpillar Global Mining Llc | Energy management 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*** |
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 |
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 |
CN102797273B (zh) * | 2012-09-07 | 2014-05-28 | 三一重机有限公司 | 一种挖掘机工作装置先导压力采集***及方法及挖掘机 |
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 |
JP6159629B2 (ja) * | 2013-09-13 | 2017-07-05 | Kyb株式会社 | 流体圧制御装置 |
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 |
US9527367B2 (en) * | 2014-04-14 | 2016-12-27 | L & B Manufacturing, Inc. | Pneumatic actuators |
JP6157666B1 (ja) * | 2016-02-26 | 2017-07-05 | 株式会社ケーヒン | 圧力流体制御装置 |
US10683632B2 (en) * | 2016-09-28 | 2020-06-16 | Hitachi Construction Machinery Co., Ltd. | Work vehicle |
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 |
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*** |
JP7489103B2 (ja) * | 2020-12-17 | 2024-05-23 | 株式会社オグラ | 油圧作動装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH09105154A (ja) * | 1995-10-11 | 1997-04-22 | Shin Caterpillar Mitsubishi Ltd | 建設機械の制御回路 |
JPH09235759A (ja) * | 1995-12-28 | 1997-09-09 | Shin Caterpillar Mitsubishi Ltd | 作業機械の作業機制御回路 |
JP2002339911A (ja) * | 2001-05-15 | 2002-11-27 | Shin Caterpillar Mitsubishi Ltd | 流体圧回路の制御システム |
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EP1676963A3 (en) * | 2004-12-30 | 2008-12-31 | Doosan Infracore Co., Ltd. | Fluid pump control system for excavators |
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2006
- 2006-07-31 JP JP2006208554A patent/JP2008032175A/ja active Pending
-
2007
- 2007-02-20 EP EP07737288A patent/EP2048369A4/en not_active Withdrawn
- 2007-02-20 CN CN2007800000565A patent/CN101213375B/zh not_active Expired - Fee Related
- 2007-02-20 US US12/065,112 patent/US7958907B2/en not_active Expired - Fee Related
- 2007-02-20 WO PCT/JP2007/053029 patent/WO2008015802A1/ja active Application Filing
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JPH09105154A (ja) * | 1995-10-11 | 1997-04-22 | Shin Caterpillar Mitsubishi Ltd | 建設機械の制御回路 |
JPH09235759A (ja) * | 1995-12-28 | 1997-09-09 | Shin Caterpillar Mitsubishi Ltd | 作業機械の作業機制御回路 |
JP2002339911A (ja) * | 2001-05-15 | 2002-11-27 | Shin Caterpillar Mitsubishi Ltd | 流体圧回路の制御システム |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2010025146A (ja) * | 2008-07-15 | 2010-02-04 | Kobelco Contstruction Machinery Ltd | 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 |
Also Published As
Publication number | Publication date |
---|---|
US7958907B2 (en) | 2011-06-14 |
CN101213375B (zh) | 2010-08-11 |
US20090159143A1 (en) | 2009-06-25 |
WO2008015802A1 (fr) | 2008-02-07 |
EP2048369A4 (en) | 2011-02-23 |
CN101213375A (zh) | 2008-07-02 |
EP2048369A1 (en) | 2009-04-15 |
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