WO2012091187A1 - Système de commande hydraulique d'entraînement combiné flèche/pivot pour machine de construction - Google Patents
Système de commande hydraulique d'entraînement combiné flèche/pivot pour machine de construction Download PDFInfo
- Publication number
- WO2012091187A1 WO2012091187A1 PCT/KR2010/009361 KR2010009361W WO2012091187A1 WO 2012091187 A1 WO2012091187 A1 WO 2012091187A1 KR 2010009361 W KR2010009361 W KR 2010009361W WO 2012091187 A1 WO2012091187 A1 WO 2012091187A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- boom
- control valve
- spool
- work
- swing
- Prior art date
Links
Images
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
- E02F9/2278—Hydraulic circuits
- E02F9/2292—Systems with 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- 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
- E02F9/2025—Particular purposes of control systems not otherwise provided for
- E02F9/2037—Coordinating the movements of the implement and of the frame
-
- 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
- E02F9/2239—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
- E02F9/2296—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
- F15B11/16—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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/044—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by electrically-controlled means, e.g. solenoids, torque-motors
-
- 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
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/3056—Assemblies of multiple valves
- F15B2211/3059—Assemblies of multiple valves having multiple valves for multiple output members
- F15B2211/30595—Assemblies of multiple valves having multiple valves for multiple output members with additional valves between the groups of valves for multiple output members
-
- 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
- F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
- F15B2211/41509—Flow control characterised by the connections of the flow control means in the circuit being connected to a pressure source and a directional control valve
-
- 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
- F15B2211/42—Flow control characterised by the type of actuation
- F15B2211/428—Flow 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
- F15B2211/455—Control of flow in the feed line, i.e. meter-in control
-
- 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
- F15B2211/665—Methods of control using electronic components
- F15B2211/6658—Control using different modes, e.g. four-quadrant-operation, working mode and transportation mode
-
- 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
Definitions
- the present invention relates to a boom-slewing combined drive hydraulic control system for a construction machine such as an excavator, and in particular, a boom up and swing depending on the working environment, in the case of a combined operation of operating a boom and a swing device for working on an excavator.
- the present invention relates to a boom-slewing combined drive hydraulic control system of a construction machine, which enables a smooth operation by matching a driving speed of a swing.
- first and second hydraulic pumps 1 and 2 (hereinafter referred to as first and second hydraulic pumps) connected to an engine (not shown);
- Actuator for swing device and work device (referring to arm cylinder, etc.) connected to the first hydraulic pump (1),
- Actuator for work device (referred to as boom cylinder, etc.) connected to the second hydraulic pump (2),
- a flow control valve (MCV) 3 for controlling the hydraulic oil supplied from the first and second hydraulic pumps 1 and 2 to the swing device and the actuator for the work device, respectively.
- reference numeral 11 denotes a boom joining spool for joining the hydraulic oil of the first hydraulic pump 1 to the second hydraulic pump 2 during boom-up operation.
- the swing device is driven by the hydraulic oil supplied from the first hydraulic pump 1 through the swing spool 6. Swing the upper swing structure.
- the hydraulic oil from the second hydraulic pump 2 passes through the boom spool 5 to drive the boom cylinder, and the hydraulic oil from the first hydraulic pump 1 is boom. It is distributed by the pressure difference between the front end of the joining spool 11 and the swing spool 6 and is supplied to the boom cylinder and the swing device, respectively.
- the driver adjusts the driving speed of the boom up and swing required according to various working environments, such as the depth of excavation or the height of the cover vehicle during the combined operation of operating the boom and the swing device to work on excavation loading It is related to the boom-slewing combined drive hydraulic control system of construction machinery, which makes it possible to work smoothly.
- the flow rate distributed to the boom confluence spool and swing spool is adjusted according to the selected work mode to the boom cylinder and the swing device.
- the flow rate supplied is controlled, it relates to a boom-slewing combined drive hydraulic control system for construction machinery that allows the driver to adjust the drive speed of the boom and swing to the working conditions required by the operator.
- a flow control valve for controlling the hydraulic fluid supplied to the actuator for the work device
- a work mode selection switch for selecting a preset work mode according to the work environment
- An electronic proportional control valve installed in a pilot flow path for discharging the pilot signal pressure in accordance with its operation amount to operate the boom operation lever to drive the boom up, and outputting a control signal pressure proportional to the operation of the operation mode selection switch;
- variable flow control valve installed in a flow path between the first hydraulic pump and the spool for the swing device, the variable flow control valve having a variable opening area in proportion to the control signal pressure from the electromagnetic proportional control valve;
- the flow rate supplied to the spool for the swing device and the boom joining spool is variably adjusted according to the selected work mode. Adjust the drive speed of the device.
- the above-described electromagnetic proportional control valve is mounted inside the flow control valve.
- the above electronic proportional control valve is mounted outside the flow control valve.
- variable flow control valve uses a variable orifice whose opening area is variably adjusted in proportion to the control signal pressure from the electromagnetic proportional control valve.
- Boom-slewing combined drive hydraulic control system of a construction machine according to an embodiment of the present invention configured as described above has the following advantages.
- the operation speed of the boom up and swing device is adjusted according to various working environments such as the depth of excavation or the height of the cover vehicle to improve the work efficiency. Can be.
- the driving speed of the boom and the swing device is adjusted to the working conditions required by the driver can provide convenience to the driver.
- FIG. 2 is an excerpt of an essential part of a boom-slewing combined drive hydraulic control system of a construction machine according to an embodiment of the present invention
- Figure 3 is a graph for explaining the effect of the boom-swing combined drive hydraulic control system of a construction machine according to an embodiment of the present invention.
- a flow control valve for controlling the hydraulic fluid supplied to the actuator for the work device
- Variable flow control valve 10 is provided in the flow path between the first hydraulic pump (1) and the swing device spool (6), the opening area is variably adjusted in proportion to the control signal pressure from the electromagnetic proportional control valve (9) Wow,
- the swing device When driving the boom up and swing device for excavation loading, if the driver selects any work mode according to the working environment, the swing device spool (6) and the boom joining spool (11) according to the selected work mode. By adjusting the flow rate supplied to the boom and the driving speed of the boom and the swing device.
- the above-described electromagnetic proportional control valve (EPPRV) 9 may be mounted in the flow control valve (MCV) (3).
- the above-described electromagnetic proportional control valve 9 may be mounted outside the flow control valve 3.
- variable flow control valve 10 may be a variable orifice whose opening area is variably adjusted in proportion to the control signal pressure from the electromagnetic proportional control valve 9.
- reference numeral 11 denotes a boom joining spool for joining the hydraulic oil of the first hydraulic pump 1 to the second hydraulic pump 2 during boom-up operation.
- the driver in the cab has a work mode selection switch 8 ) To select an arbitrary working mode suitable for various working environments, such as ground level of an excavation workshop or height of a dump vehicle.
- the electromagnetic proportional control valve 9 outputs the pilot signal pressure to be proportional to the selection signal corresponding to the operation mode selected according to the operation of the operation mode selection switch 8.
- the signal pressure passing through the electromagnetic proportional control valve 9 is supplied to the variable flow control valve 10, thereby controlling the opening area of the variable flow control valve 10. That is, the diameter of the variable flow control valve 10 is adjusted to be proportional to the signal pressure output from the electromagnetic proportional control valve 9 according to the selected working mode.
- the flow rate discharged from the first hydraulic pump 1 and supplied to the swing device spool 6 is reduced to match the selected working mode, and the flow rate supplied to the boom joining spool 11 is increased. That is, since the flow rate supplied from the first hydraulic pump 1 to the boom joining spool 11 is increased, the boom up drive is relatively quicker than the swing drive of the upper swing structure, so that the loading operation can be safely performed.
- a pilot signal output from the electromagnetic proportional control valve 9 to fit the selected work mode for example, the graph curve “a” in FIG. 3 due to the operation of the work mode selection switch 8.
- the hydraulic oil from the first hydraulic pump 1 is supplied to the boom cylinder.
- the boom-swing combined drive hydraulic control system of the construction machine in the case of the combined operation of operating the boom and the swing device to work on the excavation loading, such as the depth of the excavation or the height of the cover vehicle It is possible to adjust the driving speed of boom up and swing device according to various working environment. If you select any working mode required for the working environment in the cab of the excavation loading work, the driving speed of the boom and the swing device is adjusted according to the working conditions required by the driver, thereby ensuring convenience and operability.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201080071033.5A CN103299089B (zh) | 2010-12-27 | 2010-12-27 | 施工机械的动臂回转型组合驱动液压控制系统 |
PCT/KR2010/009361 WO2012091187A1 (fr) | 2010-12-27 | 2010-12-27 | Système de commande hydraulique d'entraînement combiné flèche/pivot pour machine de construction |
JP2013547272A JP2014505810A (ja) | 2010-12-27 | 2010-12-27 | 建設機械のブーム−旋回複合駆動油圧制御システム |
EP10861359.7A EP2660478B1 (fr) | 2010-12-27 | 2010-12-27 | Système de commande hydraulique d'entraînement combiné flèche/pivot pour machine de construction |
KR1020137016543A KR20130137192A (ko) | 2010-12-27 | 2010-12-27 | 건설기계의 붐-선회 복합구동 유압 제어시스템 |
US13/996,818 US20130291530A1 (en) | 2010-12-27 | 2010-12-27 | Boom-swivel compound drive hydraulic control system of construction machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/KR2010/009361 WO2012091187A1 (fr) | 2010-12-27 | 2010-12-27 | Système de commande hydraulique d'entraînement combiné flèche/pivot pour machine de construction |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012091187A1 true WO2012091187A1 (fr) | 2012-07-05 |
Family
ID=46383250
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2010/009361 WO2012091187A1 (fr) | 2010-12-27 | 2010-12-27 | Système de commande hydraulique d'entraînement combiné flèche/pivot pour machine de construction |
Country Status (6)
Country | Link |
---|---|
US (1) | US20130291530A1 (fr) |
EP (1) | EP2660478B1 (fr) |
JP (1) | JP2014505810A (fr) |
KR (1) | KR20130137192A (fr) |
CN (1) | CN103299089B (fr) |
WO (1) | WO2012091187A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103015473A (zh) * | 2012-12-10 | 2013-04-03 | 三一重机有限公司 | 挖掘机、动臂对回转优先控制方法及优先阀 |
CN104520596A (zh) * | 2012-08-27 | 2015-04-15 | 沃尔沃建造设备有限公司 | 用于施工机械的液压系统 |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9926135B2 (en) * | 2012-10-09 | 2018-03-27 | The Heil Co. | Externally controlled switch mechanism |
JP6220228B2 (ja) * | 2013-10-31 | 2017-10-25 | 川崎重工業株式会社 | 建設機械の油圧駆動システム |
KR102131447B1 (ko) | 2013-11-12 | 2020-07-08 | 현대모비스 주식회사 | 차량의 에어벤트 |
WO2016111393A1 (fr) * | 2015-01-08 | 2016-07-14 | 볼보 컨스트럭션 이큅먼트 에이비 | Procédé de commande d'entraînement d'actionneur hydraulique d'engin de chantier |
EP3428350B1 (fr) * | 2016-03-11 | 2021-03-03 | Hitachi Construction Machinery Co., Ltd. | Dispositif de commande pour engin de construction |
CN109563696B (zh) * | 2017-05-09 | 2021-05-07 | 日立建机株式会社 | 作业机械 |
US11286962B2 (en) * | 2017-09-29 | 2022-03-29 | Volvo Construction Equipment Ab | Flow control valve and hydraulic machine including the same |
WO2019089909A1 (fr) * | 2017-11-01 | 2019-05-09 | Clark Equipment Company | Système de commande pour machine électrique |
DE102019201182A1 (de) * | 2019-01-30 | 2020-07-30 | Putzmeister Engineering Gmbh | Fahrzeug |
EP4335981A1 (fr) * | 2022-09-08 | 2024-03-13 | XCMG European Research Center GmbH | Machine de construction pourvu de système hydraulique |
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KR920010874B1 (ko) * | 1988-03-03 | 1992-12-19 | 히다찌 겐끼 가부시기가이샤 | 유압기계의 유압구동방법 및 유압구동장치 |
JPH06280814A (ja) * | 1993-03-30 | 1994-10-07 | Kobe Steel Ltd | 流体圧アクチュエータの駆動制御装置 |
KR960013596B1 (ko) * | 1992-07-29 | 1996-10-09 | 현대중장비산업 주식회사 | 건설기계의 작업 자동제어 장치 |
JPH10220411A (ja) * | 1997-02-06 | 1998-08-21 | Hitachi Constr Mach Co Ltd | 油圧パイロット操作装置 |
JP2002047691A (ja) * | 2000-08-03 | 2002-02-15 | Komatsu Ltd | 作業用車両 |
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KR940009215B1 (ko) * | 1989-03-22 | 1994-10-01 | 히다찌 겐끼 가부시기가이샤 | 토목ㆍ건설기계의 유압구동장치 |
US5125232A (en) * | 1990-05-29 | 1992-06-30 | Kubota Corporation | Control change system for a hydraulic working vehicle |
JP2583148B2 (ja) * | 1990-06-19 | 1997-02-19 | 株式会社小松製作所 | 油圧式掘削機の油圧制御回路 |
JP3477687B2 (ja) * | 1993-11-08 | 2003-12-10 | 日立建機株式会社 | 流量制御装置 |
KR0162960B1 (ko) * | 1995-06-23 | 1999-01-15 | 석진철 | 굴삭기의 조작성 향상 유량제어장치 |
US6050090A (en) * | 1996-06-11 | 2000-04-18 | Kabushiki Kaisha Kobe Seiko Sho | Control apparatus for hydraulic excavator |
US20050139273A1 (en) * | 2003-12-29 | 2005-06-30 | Tecnord S.R.L. | Electromechanically controlled proportional valve |
KR101144396B1 (ko) * | 2004-12-16 | 2012-05-11 | 두산인프라코어 주식회사 | 굴삭기의 선회복합작업용 유압제어장치 |
KR100900436B1 (ko) * | 2007-05-21 | 2009-06-01 | 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 | 무한궤도형 중장비의 주행장치 |
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2010
- 2010-12-27 WO PCT/KR2010/009361 patent/WO2012091187A1/fr active Application Filing
- 2010-12-27 KR KR1020137016543A patent/KR20130137192A/ko not_active Application Discontinuation
- 2010-12-27 EP EP10861359.7A patent/EP2660478B1/fr not_active Not-in-force
- 2010-12-27 US US13/996,818 patent/US20130291530A1/en not_active Abandoned
- 2010-12-27 CN CN201080071033.5A patent/CN103299089B/zh not_active Expired - Fee Related
- 2010-12-27 JP JP2013547272A patent/JP2014505810A/ja active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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KR920010874B1 (ko) * | 1988-03-03 | 1992-12-19 | 히다찌 겐끼 가부시기가이샤 | 유압기계의 유압구동방법 및 유압구동장치 |
KR960013596B1 (ko) * | 1992-07-29 | 1996-10-09 | 현대중장비산업 주식회사 | 건설기계의 작업 자동제어 장치 |
JPH06280814A (ja) * | 1993-03-30 | 1994-10-07 | Kobe Steel Ltd | 流体圧アクチュエータの駆動制御装置 |
JPH10220411A (ja) * | 1997-02-06 | 1998-08-21 | Hitachi Constr Mach Co Ltd | 油圧パイロット操作装置 |
JP2002047691A (ja) * | 2000-08-03 | 2002-02-15 | Komatsu Ltd | 作業用車両 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104520596A (zh) * | 2012-08-27 | 2015-04-15 | 沃尔沃建造设备有限公司 | 用于施工机械的液压系统 |
CN103015473A (zh) * | 2012-12-10 | 2013-04-03 | 三一重机有限公司 | 挖掘机、动臂对回转优先控制方法及优先阀 |
Also Published As
Publication number | Publication date |
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CN103299089B (zh) | 2016-08-10 |
EP2660478B1 (fr) | 2017-03-15 |
KR20130137192A (ko) | 2013-12-16 |
CN103299089A (zh) | 2013-09-11 |
US20130291530A1 (en) | 2013-11-07 |
EP2660478A1 (fr) | 2013-11-06 |
JP2014505810A (ja) | 2014-03-06 |
EP2660478A4 (fr) | 2014-08-20 |
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