WO2012102488A3 - 전자유압펌프를 포함하는 건설기계의 유압 시스템 - Google Patents

전자유압펌프를 포함하는 건설기계의 유압 시스템 Download PDF

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Publication number
WO2012102488A3
WO2012102488A3 PCT/KR2011/010081 KR2011010081W WO2012102488A3 WO 2012102488 A3 WO2012102488 A3 WO 2012102488A3 KR 2011010081 W KR2011010081 W KR 2011010081W WO 2012102488 A3 WO2012102488 A3 WO 2012102488A3
Authority
WO
WIPO (PCT)
Prior art keywords
control section
electronic
electronic control
construction machine
joystick
Prior art date
Application number
PCT/KR2011/010081
Other languages
English (en)
French (fr)
Other versions
WO2012102488A2 (ko
Inventor
임현식
정우용
Original Assignee
두산인프라코어 주식회사
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 두산인프라코어 주식회사 filed Critical 두산인프라코어 주식회사
Priority to US13/981,161 priority Critical patent/US9284719B2/en
Priority to EP11856946.6A priority patent/EP2669529B1/en
Priority to CN201180065660.2A priority patent/CN103328830B/zh
Publication of WO2012102488A2 publication Critical patent/WO2012102488A2/ko
Publication of WO2012102488A3 publication Critical patent/WO2012102488A3/ko

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Classifications

    • 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
    • F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
    • F15B13/0426—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with fluid-operated pilot valves, i.e. multiple stage 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
    • E02F9/2292—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
    • E02F9/2221—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
    • E02F9/2239—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
    • E02F9/226—Safety arrangements, e.g. hydraulic driven fans, preventing cavitation, leakage, overheating
    • 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
    • E02F9/2296—Systems with a variable displacement pump
    • 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
    • E02F9/26—Indicating devices
    • E02F9/267—Diagnosing or detecting failure of vehicles
    • E02F9/268—Diagnosing or detecting failure of vehicles with failure correction follow-up actions
    • 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
    • F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
    • F15B20/002—Electrical failure
    • 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
    • F15B2211/31—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
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/875—Control measures for coping with failures
    • F15B2211/8752—Emergency operation mode, e.g. fail-safe operation mode

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)
  • Analytical Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Reciprocating Pumps (AREA)

Abstract

본 발명은 전자유압펌프를 포함하는 건설기계의 유압 시스템에 관한 것이며, 더욱 구체적으로는 전자유압펌프를 제어하는 전자제어부의 작동이 비정상적일 때, 특히 전자제어부로 조이스틱의 조작량이 전달되지 못하여 전자제어부가 제어 불능시 임시로 건설기계를 구동하는 유압 시스템에 관한 것으로, 이를 위하여 전자제어부는 센터바이패스 밸브를 구동하여 전체 시스템을 개방형으로 전환하고, 조이스틱의 중립 상태를 인식하기 위해, 중립 모드 진입 조건(예컨대, 소정 압력에서 소정 시간 동안 최대 유량 유지)과 중립 모드 탈출 조건을 설정한 후, 이를 이용하여 조이스틱의 중립 상태를 인식하고, 소정의 사판각 제어를 수행하는 중립 모드로 비상 제어를 수행할 수 있다.
PCT/KR2011/010081 2011-01-24 2011-12-26 전자유압펌프를 포함하는 건설기계의 유압 시스템 WO2012102488A2 (ko)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US13/981,161 US9284719B2 (en) 2011-01-24 2011-12-26 Hydraulic system for construction machine having electronic hydraulic pump
EP11856946.6A EP2669529B1 (en) 2011-01-24 2011-12-26 Hydraulic system for construction machine having electronic hydraulic pump
CN201180065660.2A CN103328830B (zh) 2011-01-24 2011-12-26 包括电子液压泵的工程机械的液压***

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2011-0007073 2011-01-24
KR1020110007073A KR101762951B1 (ko) 2011-01-24 2011-01-24 전자유압펌프를 포함하는 건설기계의 유압 시스템

Publications (2)

Publication Number Publication Date
WO2012102488A2 WO2012102488A2 (ko) 2012-08-02
WO2012102488A3 true WO2012102488A3 (ko) 2012-10-18

Family

ID=46581239

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2011/010081 WO2012102488A2 (ko) 2011-01-24 2011-12-26 전자유압펌프를 포함하는 건설기계의 유압 시스템

Country Status (5)

Country Link
US (1) US9284719B2 (ko)
EP (1) EP2669529B1 (ko)
KR (1) KR101762951B1 (ko)
CN (1) CN103328830B (ko)
WO (1) WO2012102488A2 (ko)

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US8528684B2 (en) * 2011-11-30 2013-09-10 Deere & Company Charge pressure reduction circuit for improved transmission efficiency
US9739036B2 (en) * 2012-12-13 2017-08-22 Hyundai Construction Equipment Co., Ltd. Automatic control system and method for joystick control-based construction equipment
KR101969175B1 (ko) * 2012-12-24 2019-04-15 두산인프라코어 주식회사 자동 변속식 굴삭기
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
EP3140462B1 (en) * 2014-05-06 2020-11-11 Eaton Intelligent Power Limited Low noise control algorithm for hydraulic systems
US10487855B2 (en) * 2016-09-29 2019-11-26 Deere & Company Electro-hydraulic system with negative flow control
KR102423410B1 (ko) * 2017-03-21 2022-07-21 현대두산인프라코어 주식회사 건설 기계의 비상 운전 방법 및 이를 수행하기 위한 장치
EP3575615B1 (en) * 2018-03-15 2022-02-16 Hitachi Construction Machinery Co., Ltd. Construction machine
CA3097337C (en) * 2018-07-11 2022-08-09 Halliburton Energy Services, Inc. Using a load sense pump as a backup for a pressure-compensated pump
WO2020071567A1 (en) * 2018-10-02 2020-04-09 Volvo Construction Equipment Ab Device for controlling working unit of construction equipment
CN111441416A (zh) * 2020-05-07 2020-07-24 金华深联网络科技有限公司 一种挖掘机作业控制方法及***

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JPH06213205A (ja) * 1993-01-14 1994-08-02 Hitachi Constr Mach Co Ltd 油圧機械の油圧駆動装置
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Publication number Priority date Publication date Assignee Title
JPH06213205A (ja) * 1993-01-14 1994-08-02 Hitachi Constr Mach Co Ltd 油圧機械の油圧駆動装置
JP2000282515A (ja) * 1999-03-31 2000-10-10 Kobelco Contstruction Machinery Ltd 建設機械の油圧制御回路
JP2006162058A (ja) * 2004-12-07 2006-06-22 Volvo Construction Equipment Ab 油圧制御回路及び油圧制御方法
KR20100134332A (ko) * 2009-06-15 2010-12-23 볼보 컨스트럭션 이큅먼트 에이비 건설장비의 조작레버 잠금장치

Also Published As

Publication number Publication date
EP2669529A2 (en) 2013-12-04
US20130312403A1 (en) 2013-11-28
KR20120085622A (ko) 2012-08-01
EP2669529A4 (en) 2014-12-10
KR101762951B1 (ko) 2017-07-28
EP2669529B1 (en) 2017-11-01
US9284719B2 (en) 2016-03-15
CN103328830A (zh) 2013-09-25
CN103328830B (zh) 2015-11-25
WO2012102488A2 (ko) 2012-08-02

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