KR101793993B1 - 작업 기계의 유압 시스템 - Google Patents

작업 기계의 유압 시스템 Download PDF

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Publication number
KR101793993B1
KR101793993B1 KR1020127008734A KR20127008734A KR101793993B1 KR 101793993 B1 KR101793993 B1 KR 101793993B1 KR 1020127008734 A KR1020127008734 A KR 1020127008734A KR 20127008734 A KR20127008734 A KR 20127008734A KR 101793993 B1 KR101793993 B1 KR 101793993B1
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KR
South Korea
Prior art keywords
hydraulic
pressure
center bypass
cylinder chamber
boom
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.)
Expired - Fee Related
Application number
KR1020127008734A
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English (en)
Korean (ko)
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KR20120086288A (ko
Inventor
가쯔아끼 고다까
유따 나까무라
히데또시 사따께
Original Assignee
히다찌 겐끼 가부시키가이샤
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Publication of KR20120086288A publication Critical patent/KR20120086288A/ko
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Publication of KR101793993B1 publication Critical patent/KR101793993B1/ko
Expired - Fee Related legal-status Critical Current
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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
    • E02F9/2221—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
    • 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
    • F15B11/06—Servomotor systems without provision for follow-up action; Circuits therefor involving features specific to the use of a compressible medium, e.g. air, steam
    • F15B11/064—Servomotor systems without provision for follow-up action; Circuits therefor involving features specific to the use of a compressible medium, e.g. air, steam with devices for saving the compressible medium
    • 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
    • E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
    • E02F3/962—Mounting of implements directly on tools already attached to the machine
    • 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
    • E02F9/2282—Systems using center bypass type changeover valves
    • 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
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
    • F15B11/165—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load for adjusting the pump output or bypass in response to demand
    • 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
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/25—Pressure control functions
    • F15B2211/253—Pressure margin control, e.g. pump pressure in relation to 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
    • F15B2211/30—Directional control
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3105—Neutral or centre positions
    • F15B2211/3116—Neutral or centre positions the pump port being open in the centre position, e.g. so-called open centre
    • 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
    • F15B2211/63—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

Landscapes

  • 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)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)
KR1020127008734A 2009-10-15 2010-10-14 작업 기계의 유압 시스템 Expired - Fee Related KR101793993B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2009238664A JP5388787B2 (ja) 2009-10-15 2009-10-15 作業機械の油圧システム
JPJP-P-2009-238664 2009-10-15
PCT/JP2010/068082 WO2011046184A1 (ja) 2009-10-15 2010-10-14 作業機械の油圧システム

Publications (2)

Publication Number Publication Date
KR20120086288A KR20120086288A (ko) 2012-08-02
KR101793993B1 true KR101793993B1 (ko) 2017-11-06

Family

ID=43876233

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020127008734A Expired - Fee Related KR101793993B1 (ko) 2009-10-15 2010-10-14 작업 기계의 유압 시스템

Country Status (7)

Country Link
US (1) US9051712B2 (enExample)
EP (1) EP2489883A4 (enExample)
JP (1) JP5388787B2 (enExample)
KR (1) KR101793993B1 (enExample)
CN (1) CN102575690B (enExample)
IN (1) IN2012DN03183A (enExample)
WO (1) WO2011046184A1 (enExample)

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WO2013027620A1 (ja) * 2011-08-24 2013-02-28 株式会社小松製作所 油圧駆動システム
US8899034B2 (en) * 2011-12-22 2014-12-02 Husco International, Inc. Hydraulic system with fluid flow summation control of a variable displacement pump and priority allocation of fluid flow
KR101861856B1 (ko) 2012-01-27 2018-05-28 두산인프라코어 주식회사 건설기계의 스윙 모터 유압제어장치
JP5778086B2 (ja) * 2012-06-15 2015-09-16 住友建機株式会社 建設機械の油圧回路及びその制御装置
JP5758348B2 (ja) 2012-06-15 2015-08-05 住友建機株式会社 建設機械の油圧回路
US20140060018A1 (en) * 2012-08-30 2014-03-06 Pengfei Ma Hydraulic control system
CN104755770B (zh) * 2012-10-18 2016-11-09 日立建机株式会社 作业机械
KR101729585B1 (ko) * 2012-12-14 2017-04-24 볼보 컨스트럭션 이큅먼트 에이비 건설기계용 유압회로
EP2954121B1 (en) * 2013-02-06 2018-12-19 Volvo Construction Equipment AB Swing control system for construction machines
CA2917987C (en) * 2013-07-24 2018-07-17 Volvo Construction Equipment Ab Hydraulic circuit for construction machine
CN103527541A (zh) * 2013-09-16 2014-01-22 洛阳中重自动化工程有限责任公司 一种实现备用泵自动切换的液压控制系统
KR102128630B1 (ko) * 2014-03-24 2020-06-30 두산인프라코어 주식회사 유압시스템에서 스윙 모터의 제어방법 및 유압시스템
JP6013389B2 (ja) * 2014-03-24 2016-10-25 日立建機株式会社 作業機械の油圧システム
KR101681434B1 (ko) * 2014-09-05 2016-11-30 가부시키가이샤 고마쓰 세이사쿠쇼 유압 셔블
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JP6226851B2 (ja) * 2014-11-06 2017-11-08 日立建機株式会社 作業機械の油圧制御装置
CN104500470B (zh) * 2014-12-04 2017-09-29 徐州徐工挖掘机械有限公司 一种具有一阀两用的液压系统
US10428491B2 (en) 2015-04-29 2019-10-01 Volvo Construction Equipment Ab Flow rate control apparatus of construction equipment and control method therefor
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WO2016208780A1 (ko) * 2015-06-22 2016-12-29 볼보 컨스트럭션 이큅먼트 에이비 건설기계용 유압회로
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CN105545851B (zh) * 2015-12-21 2017-07-07 中国航空工业集团公司金城南京机电液压工程研究中心 一种适用于水上飞机的水舵操纵油路结构
JP6304273B2 (ja) * 2016-02-05 2018-04-04 コベルコ建機株式会社 作業機械の油圧駆動装置
CN108138818B (zh) * 2016-09-29 2020-06-23 日立建机株式会社 液压驱动装置
JP6378734B2 (ja) * 2016-10-27 2018-08-22 川崎重工業株式会社 油圧ショベル駆動システム
KR102246421B1 (ko) * 2017-03-06 2021-04-30 두산인프라코어 주식회사 건설기계의 제어 시스템 및 건설기계의 제어 방법
JP6580618B2 (ja) * 2017-03-21 2019-09-25 日立建機株式会社 建設機械
JP6698573B2 (ja) * 2017-03-27 2020-05-27 日立建機株式会社 油圧駆動装置
JP6646007B2 (ja) * 2017-03-31 2020-02-14 日立建機株式会社 建設機械の油圧制御装置
CN107725507A (zh) * 2017-11-22 2018-02-23 江苏恒立液压科技有限公司 液压控制系统的控制方法
JP6924161B2 (ja) * 2018-02-28 2021-08-25 川崎重工業株式会社 建設機械の油圧システム
JP6782852B2 (ja) * 2018-03-15 2020-11-11 日立建機株式会社 建設機械
KR102171498B1 (ko) * 2018-03-19 2020-10-29 히다찌 겐끼 가부시키가이샤 건설 기계
JP7131138B2 (ja) * 2018-07-04 2022-09-06 コベルコ建機株式会社 作業機械の油圧駆動装置
JP7305968B2 (ja) 2019-01-28 2023-07-11 コベルコ建機株式会社 作業機械における油圧シリンダの駆動装置
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JP7221101B2 (ja) * 2019-03-20 2023-02-13 日立建機株式会社 油圧ショベル
EP3951069A4 (en) * 2019-03-27 2022-11-30 Hitachi Construction Machinery Co., Ltd. WORK MACHINE
JP7269411B2 (ja) * 2019-03-27 2023-05-08 日立建機株式会社 作業機械
CN111852969B (zh) * 2019-04-30 2022-06-07 丹佛斯动力系统（浙江）有限公司 液压系统
JP7342437B2 (ja) * 2019-06-10 2023-09-12 コベルコ建機株式会社 作業機械
JP7268504B2 (ja) 2019-06-28 2023-05-08 コベルコ建機株式会社 油圧制御装置
CN110388342B (zh) * 2019-07-22 2020-09-04 深圳东风汽车有限公司 一种用于液压系统减少溢流保护时间的控制方法
CN111733922A (zh) * 2020-07-06 2020-10-02 上海三一重机股份有限公司 一种挖掘机流量分配系统及挖掘机
JP7053731B2 (ja) * 2020-07-15 2022-04-12 日立建機株式会社 作業機械
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Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
JP2002295409A (ja) * 2001-03-30 2002-10-09 Kobelco Contstruction Machinery Ltd 油圧作業機

Also Published As

Publication number Publication date
CN102575690B (zh) 2014-12-17
US9051712B2 (en) 2015-06-09
JP2011085198A (ja) 2011-04-28
CN102575690A (zh) 2012-07-11
EP2489883A4 (en) 2017-07-05
KR20120086288A (ko) 2012-08-02
IN2012DN03183A (enExample) 2015-09-25
WO2011046184A1 (ja) 2011-04-21
EP2489883A1 (en) 2012-08-22
JP5388787B2 (ja) 2014-01-15
US20120198831A1 (en) 2012-08-09

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