KR100929420B1 - 굴삭기의 붐 충격 완화장치 및 그 제어방법 - Google Patents
굴삭기의 붐 충격 완화장치 및 그 제어방법 Download PDFInfo
- Publication number
- KR100929420B1 KR100929420B1 KR1020060136156A KR20060136156A KR100929420B1 KR 100929420 B1 KR100929420 B1 KR 100929420B1 KR 1020060136156 A KR1020060136156 A KR 1020060136156A KR 20060136156 A KR20060136156 A KR 20060136156A KR 100929420 B1 KR100929420 B1 KR 100929420B1
- Authority
- KR
- South Korea
- Prior art keywords
- boom
- boom cylinder
- pressure
- signal
- hydraulic pump
- 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
-
- 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
- E02F9/2203—Arrangements for controlling the attitude of actuators, e.g. speed, floating function
- E02F9/2207—Arrangements for controlling the attitude of actuators, e.g. speed, floating function for reducing or compensating oscillations
-
- 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
-
- 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
-
- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/008—Reduction of noise or vibration
-
- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
- F15B21/087—Control strategy, e.g. with block diagram
-
- 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
- F15B2211/20538—Type of pump constant 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
- F15B2211/20592—Combinations of pumps for supplying high and low 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
- F15B2211/30—Directional control
- F15B2211/31—Directional control characterised by the positions of the valve element
- F15B2211/3144—Directional control characterised by the positions of the valve element the positions being continuously variable, e.g. as realised by proportional valves
-
- 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
- F15B2211/30—Directional control
- F15B2211/36—Pilot pressure sensing
-
- 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
- F15B2211/605—Load sensing circuits
- F15B2211/6051—Load sensing circuits having valve means between output member and the load sensing circuit
- F15B2211/6054—Load sensing circuits having valve means between output member and the load sensing circuit using shuttle valves
-
- 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
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/6306—Electronic controllers using input signals representing a pressure
- F15B2211/6316—Electronic controllers using input signals representing a pressure the pressure being a pilot 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
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/6346—Electronic controllers using input signals representing a state of input means, e.g. joystick position
-
- 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
- F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
- F15B2211/7051—Linear output members
- F15B2211/7053—Double-acting 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
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/86—Control during or prevention of abnormal conditions
- F15B2211/8616—Control during or prevention of abnormal conditions the abnormal condition being noise or vibration
Abstract
Description
Claims (9)
- 삭제
- 삭제
- 삭제
- 삭제
- 삭제
- 삭제
- 삭제
- 유압펌프(1)에 연결되는 붐실린더(3)와,상기 붐실린더(3)에 공급되는 작동유를 제어하는 메인 컨트롤밸브(4)와,상기 붐실린더(3)를 구동시키는 조작신호를 발생하는 조작레버(5)와,조작레버(5)의 조작량에 따른 붐상승 및 붐하강 신호압력을 검출하는 조작레버 검출수단(6,7)과,상기 붐실린더(3)의 라지챔버(3a) 및 스몰챔버(3b)에 발생되는 압력을 검출하는 붐실린더 압력 검출수단(8,9)과,상기 붐실린더 압력 검출수단(8,9) 및 조작레버 검출수단(6,7)으로부터의 검출신호를 입력받는 제어기(10)와,절환시 메인 컨트롤밸브(4)에 공급되는 신호압력을 제어하는 전자비례감압밸브(11,12)를 포함하는 굴삭기의 붐 충격 완화장치의 제어방법에 있어서:상기 조작레버 검출수단(6,7)으로부터 붐상승 및 붐하강 신호압력과, 상기 붐실린더 압력 검출수단(8,9)으로부터 붐실린더(3)의 압력을 입력받는 단계(S10);상기 붐상승 및 붐하강 신호압력에 의해 소정시간동안 조작레버(5)의 조작 감소비를 구하고(S50), 소정의 설정값보다 큰 경우 조작레버(5)의 급정지로 판단하는 단계(S60);붐 정지시 붐실린더(3)의 압축측 챔버의 압력값을 입력받아 소정의 설정값과 비교후, 설정값보다 큰 경우 붐 진동을 예측하는 단계(S90);상기 조작레버(5)의 급정지로 인해 붐 진동이 예측되는 경우, 해당 조작레버측의 메인 컨트롤밸브(4)의 스풀을 구동시키도록 전자비례감압밸브(11,12)의 제어값을 연산하여 출력하는 단계(S110); 및붐 정지시 붐실린더(3)의 압축측 챔버와 팽창측 챔버의 압력차를 소정의 설정값과 비교하여 붐 진동 종료를 예측하고 전자비례감압밸브(11,12)의 출력을 정지하는 단계(S100)를 포함하는 것을 특징으로 하는 굴삭기의 붐 충격 완화장치 제어방법.
- 청구항 8에 있어서, 붐 상승중 조작레버(5) 급정지라고 판단된 경우, 전자비례감압밸브(11)로부터의 제어신호를 메인 컨트롤밸브(4)의 붐상승측 스풀에 공급하여 유압펌프(1)로부터의 작동유를 붐실린더(3)의 라지챔버(3a)에 공급하고,붐 하강중 조작레버(5) 급정지라고 판단된 경우, 전자비례감압밸브(12)로부터의 제어신호를 메인 컨트롤밸브(4)의 붐하강측 스풀에 공급하여 유압펌프(1)로부터의 작동유를 붐실린더(3)의 스몰챔버(3b)에 공급하는 것을 특징으로 하는 굴삭기의 붐 충격 완화장치 제어방법.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020060136156A KR100929420B1 (ko) | 2006-12-28 | 2006-12-28 | 굴삭기의 붐 충격 완화장치 및 그 제어방법 |
EP07020753A EP1939363B1 (en) | 2006-12-28 | 2007-10-24 | Method of controlling an apparatus for easing impact on a boom of an excavator |
US11/977,650 US7934377B2 (en) | 2006-12-28 | 2007-10-25 | Apparatus for easing impact on boom of excavator and method of controlling the same |
CN2007101700720A CN101230587B (zh) | 2006-12-28 | 2007-11-09 | 用于减轻对挖掘机转臂的冲击的设备和控制该设备的方法 |
JP2007294277A JP5124243B2 (ja) | 2006-12-28 | 2007-11-13 | 掘削機のブーム衝撃緩和装置及び該制御方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020060136156A KR100929420B1 (ko) | 2006-12-28 | 2006-12-28 | 굴삭기의 붐 충격 완화장치 및 그 제어방법 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020090086047A Division KR100974286B1 (ko) | 2009-09-11 | 2009-09-11 | 굴삭기의 붐 충격 완화장치 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20080061164A KR20080061164A (ko) | 2008-07-02 |
KR100929420B1 true KR100929420B1 (ko) | 2009-12-03 |
Family
ID=39144332
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020060136156A KR100929420B1 (ko) | 2006-12-28 | 2006-12-28 | 굴삭기의 붐 충격 완화장치 및 그 제어방법 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7934377B2 (ko) |
EP (1) | EP1939363B1 (ko) |
JP (1) | JP5124243B2 (ko) |
KR (1) | KR100929420B1 (ko) |
CN (1) | CN101230587B (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017018557A1 (ko) * | 2015-07-28 | 2017-02-02 | 볼보 컨스트럭션 이큅먼트 에이비 | 건설기계용 유압회로 |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101112134B1 (ko) * | 2009-07-09 | 2012-02-27 | 볼보 컨스트럭션 이큅먼트 에이비 | 학습형 유압실린더 진동 제어방법 |
US8286652B2 (en) * | 2009-09-22 | 2012-10-16 | Eaton Corporation | Configurable active jerk control |
WO2012053672A1 (ko) * | 2010-10-20 | 2012-04-26 | 볼보 컨스트럭션 이큅먼트 에이비 | 건설장비용 유압시스템 |
KR101500572B1 (ko) * | 2010-11-09 | 2015-03-10 | 현대중공업 주식회사 | 건설장비의 유압시스템 제어 장치 및 방법 |
KR20120072729A (ko) * | 2010-12-24 | 2012-07-04 | 두산인프라코어 주식회사 | 상이한 컷오프 압력을 구비한 유압 펌프를 포함하는 휠로더 |
CN102146690B (zh) * | 2011-01-28 | 2012-09-05 | 徐州工程学院 | 液控振动挖掘机挖力的控制方法及专用伺服阀 |
JP5848457B2 (ja) * | 2011-10-27 | 2016-01-27 | ボルボ コンストラクション イクイップメント アーベー | アクチュエータ衝撃低減システム付きハイブリッド掘削機 |
EP2799692B1 (en) * | 2011-12-28 | 2018-09-26 | Volvo Construction Equipment AB | Engine control method of construction machine |
DE112013003616B4 (de) | 2012-07-20 | 2021-12-02 | Hitachi Construction Machinery Co., Ltd. | Arbeitsmaschine |
CN102797787B (zh) * | 2012-08-17 | 2013-11-20 | 中联重科股份有限公司 | 混凝土布料设备及其臂架振动抑制的方法、控制器和装置 |
CN102910549B (zh) * | 2012-09-28 | 2015-05-13 | 三一重工股份有限公司 | 旋挖钻机及其主卷扬下放方法、下放控制系统 |
CN104695501B (zh) * | 2013-12-05 | 2017-12-08 | 斗山工程机械(中国)有限公司 | 降低挖掘机动作冲击的方法、装置以及挖掘机 |
CN104029722B (zh) * | 2014-01-23 | 2016-09-07 | 广西柳工机械股份有限公司 | 工程机械液压转向系统 |
CN103806481B (zh) * | 2014-02-28 | 2015-12-09 | 山东冠县鲁牛工程机械有限公司 | 一种挖掘机的操纵装置 |
WO2016002979A1 (ko) * | 2014-06-30 | 2016-01-07 | 볼보 컨스트럭션 이큅먼트 에이비 | 건설기계용 유압회로 |
WO2016084992A1 (ko) * | 2014-11-25 | 2016-06-02 | 볼보 컨스트럭션 이큅먼트 에이비 | 건설기계용 파일럿압력 제어장치 및 그 제어방법 |
CN104595273B (zh) * | 2015-01-14 | 2017-03-01 | 柳州柳工挖掘机有限公司 | 工程机械精细化操作液压系统 |
JP6487872B2 (ja) * | 2016-03-30 | 2019-03-20 | 日立建機株式会社 | 作業機械の駆動制御装置 |
JP6770862B2 (ja) * | 2016-09-23 | 2020-10-21 | 日立建機株式会社 | 建設機械の制御装置 |
JP6683640B2 (ja) * | 2017-02-20 | 2020-04-22 | 日立建機株式会社 | 建設機械 |
EP3604692B1 (en) * | 2017-03-31 | 2023-10-18 | Sumitomo Heavy Industries, Ltd. | Shovel |
US11624452B2 (en) | 2019-04-12 | 2023-04-11 | Barko Hydraulics, LLC | System for adjusting rate of spool centering in a pilot-controlled hydraulic spool valve |
US11828040B2 (en) * | 2019-09-27 | 2023-11-28 | Topcon Positioning Systems, Inc. | Method and apparatus for mitigating machine operator command delay |
CN111115477A (zh) * | 2019-12-12 | 2020-05-08 | 上海中联重科桩工机械有限公司 | 主卷扬提升自动降速控制系统及旋挖钻机 |
CN111042260A (zh) * | 2019-12-18 | 2020-04-21 | 广西柳工机械股份有限公司 | 装载机动臂举升控制系统及方法 |
CN111483329B (zh) * | 2020-04-29 | 2023-01-31 | 重庆工商大学 | 一种电动装载机的冲击抑制方法、装置及系统 |
CN112627279B (zh) * | 2020-11-25 | 2023-03-10 | 三一重机有限公司 | 主动降低挖掘机动作冲击的方法、装置及工程机械 |
CN113062399B (zh) * | 2021-04-14 | 2023-08-08 | 徐州徐工矿业机械有限公司 | 挖掘机回转马达及其制动控制解除回路、方法及挖掘机 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11351204A (ja) * | 1998-06-04 | 1999-12-24 | Kobe Steel Ltd | 油圧アクチュエータの流量制御装置 |
KR100559296B1 (ko) * | 2004-03-22 | 2006-03-15 | 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 | 유압실린더의 진동 제어방법 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5189940A (en) * | 1991-09-13 | 1993-03-02 | Caterpillar Inc. | Method and apparatus for controlling an implement |
JP3147188B2 (ja) * | 1991-12-13 | 2001-03-19 | 株式会社小松製作所 | 作業機の振動抑制装置 |
JPH0693630A (ja) * | 1992-09-11 | 1994-04-05 | Hitachi Constr Mach Co Ltd | 作業機用バケット制御装置 |
JP3356250B2 (ja) * | 1995-12-18 | 2002-12-16 | 住友建機製造株式会社 | 建設機械のハンチング防止回路 |
KR970040698A (ko) * | 1995-12-29 | 1997-07-24 | 유상부 | 휠타입 굴삭기의 작업브레이크장치 |
JP3145032B2 (ja) * | 1996-05-21 | 2001-03-12 | 新キャタピラー三菱株式会社 | 作業機械における油圧シリンダの制振装置 |
JPH10195915A (ja) * | 1997-01-13 | 1998-07-28 | Hitachi Constr Mach Co Ltd | 多関節建設機械の制御装置 |
JP3810942B2 (ja) * | 1999-04-26 | 2006-08-16 | 日立建機株式会社 | 建設機械の油圧駆動装置 |
US6892535B2 (en) * | 2002-06-14 | 2005-05-17 | Volvo Construction Equipment Holding Sweden Ab | Hydraulic circuit for boom cylinder combination having float function |
JP2004278746A (ja) * | 2003-03-18 | 2004-10-07 | Hitachi Sumitomo Heavy Industries Construction Crane Co Ltd | 建設機械の油圧操作装置 |
JP2006242336A (ja) * | 2005-03-04 | 2006-09-14 | Hitachi Constr Mach Co Ltd | 建設機械の油圧制御装置 |
US7278262B2 (en) * | 2005-06-03 | 2007-10-09 | Board Of Control Of Michigan Technological University | Control system for suppression of boom or arm oscillation |
-
2006
- 2006-12-28 KR KR1020060136156A patent/KR100929420B1/ko active IP Right Grant
-
2007
- 2007-10-24 EP EP07020753A patent/EP1939363B1/en active Active
- 2007-10-25 US US11/977,650 patent/US7934377B2/en active Active
- 2007-11-09 CN CN2007101700720A patent/CN101230587B/zh active Active
- 2007-11-13 JP JP2007294277A patent/JP5124243B2/ja active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11351204A (ja) * | 1998-06-04 | 1999-12-24 | Kobe Steel Ltd | 油圧アクチュエータの流量制御装置 |
KR100559296B1 (ko) * | 2004-03-22 | 2006-03-15 | 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 | 유압실린더의 진동 제어방법 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017018557A1 (ko) * | 2015-07-28 | 2017-02-02 | 볼보 컨스트럭션 이큅먼트 에이비 | 건설기계용 유압회로 |
Also Published As
Publication number | Publication date |
---|---|
JP2008163730A (ja) | 2008-07-17 |
EP1939363A2 (en) | 2008-07-02 |
US20080155977A1 (en) | 2008-07-03 |
US7934377B2 (en) | 2011-05-03 |
CN101230587A (zh) | 2008-07-30 |
CN101230587B (zh) | 2012-02-29 |
EP1939363B1 (en) | 2012-12-26 |
JP5124243B2 (ja) | 2013-01-23 |
EP1939363A3 (en) | 2012-01-04 |
KR20080061164A (ko) | 2008-07-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR100929420B1 (ko) | 굴삭기의 붐 충격 완화장치 및 그 제어방법 | |
US7530434B2 (en) | Hydraulic system | |
JP5388787B2 (ja) | 作業機械の油圧システム | |
EP2072691B1 (en) | Shock absorption device and control method thereof for small swing radius excavator | |
US8047121B2 (en) | Working machine, and quick load-dropping method | |
KR100559296B1 (ko) | 유압실린더의 진동 제어방법 | |
KR100974286B1 (ko) | 굴삭기의 붐 충격 완화장치 | |
JP2004060821A (ja) | 油圧アクチュエータ回路の負荷保持装置 | |
JP2010151191A (ja) | 作業機械の油圧システム | |
JP5357073B2 (ja) | 建設機械のポンプ制御装置 | |
KR101275012B1 (ko) | 굴삭기용 유량분배 제어장치 및 제어방법 | |
JP5774405B2 (ja) | 作業機械 | |
JP3729029B2 (ja) | フォークリフトの荷重検出装置 | |
JP2005112516A (ja) | 産業車両の荷役用油圧装置及び産業車両 | |
JP2005119784A (ja) | 車両の振動抑制装置 | |
CA2528670C (en) | Hydraulic system | |
KR20190109549A (ko) | 건설기계의 제어 시스템 및 건설기계의 제어 방법 | |
JPH04353130A (ja) | 油圧作業機械における作業装置の振動抑制制御装置 | |
KR101555537B1 (ko) | 건설기계의 제어장치 및 제어방법 | |
JP3931312B2 (ja) | フォークリフトトラックのリフトシリンダの制御装置 | |
JP2005330674A (ja) | クレーン仕様油圧ショベルの油圧回路 | |
KR101532784B1 (ko) | 건설장비용 전자 완충 장치 | |
KR101240162B1 (ko) | 굴삭기의 도저 자동하강장치 | |
JP4731205B2 (ja) | 油圧シリンダの作動制御装置 | |
KR20190016211A (ko) | 휠 로더의 디텐트 모드 제어 방법 및 이를 수행하기 위한 장치 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
AMND | Amendment | ||
E902 | Notification of reason for refusal | ||
AMND | Amendment | ||
E601 | Decision to refuse application | ||
AMND | Amendment | ||
J201 | Request for trial against refusal decision | ||
A107 | Divisional application of patent | ||
B701 | Decision to grant | ||
GRNT | Written decision to grant | ||
FPAY | Annual fee payment |
Payment date: 20121022 Year of fee payment: 4 |
|
FPAY | Annual fee payment |
Payment date: 20130917 Year of fee payment: 5 |
|
FPAY | Annual fee payment |
Payment date: 20141021 Year of fee payment: 6 |
|
FPAY | Annual fee payment |
Payment date: 20151001 Year of fee payment: 7 |
|
FPAY | Annual fee payment |
Payment date: 20170220 Year of fee payment: 8 |
|
FPAY | Annual fee payment |
Payment date: 20171121 Year of fee payment: 9 |