WO2011074781A3 - 건설기계의 유압시스템 - Google Patents

건설기계의 유압시스템 Download PDF

Info

Publication number
WO2011074781A3
WO2011074781A3 PCT/KR2010/007709 KR2010007709W WO2011074781A3 WO 2011074781 A3 WO2011074781 A3 WO 2011074781A3 KR 2010007709 W KR2010007709 W KR 2010007709W WO 2011074781 A3 WO2011074781 A3 WO 2011074781A3
Authority
WO
WIPO (PCT)
Prior art keywords
steering unit
working fluid
load sensing
sensing pressure
hydraulic system
Prior art date
Application number
PCT/KR2010/007709
Other languages
English (en)
French (fr)
Other versions
WO2011074781A2 (ko
Inventor
김정화
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 US13/516,520 priority Critical patent/US9243385B2/en
Priority to CN201080056711.0A priority patent/CN102713088B/zh
Priority to EP10837778.9A priority patent/EP2514880B1/en
Publication of WO2011074781A2 publication Critical patent/WO2011074781A2/ko
Publication of WO2011074781A3 publication Critical patent/WO2011074781A3/ko

Links

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
    • E02F9/2239—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
    • B62D5/065—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by specially adapted means for varying pressurised fluid supply based on need, e.g. on-demand, variable assist
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
    • B62D5/07—Supply of pressurised fluid for steering also supplying other consumers ; control thereof
    • 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
    • E02F9/2058—Electric or electro-mechanical or mechanical control devices of vehicle sub-units
    • E02F9/2062—Control of propulsion units
    • E02F9/207—Control of propulsion units of the type electric propulsion units, e.g. electric motors or generators
    • 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
    • E02F9/2058—Electric or electro-mechanical or mechanical control devices of vehicle sub-units
    • E02F9/2087—Control of vehicle steering
    • 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
    • E02F9/225—Control of steering, e.g. for hydraulic motors driving the vehicle tracks
    • 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
    • F15B11/162—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load for giving priority to particular servomotors or users
    • 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
    • F15B2211/20507—Type of prime mover
    • F15B2211/20515—Electric motor
    • 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
    • F15B2211/20507—Type of prime mover
    • F15B2211/20523—Internal combustion engine
    • 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
    • F15B2211/265—Control of multiple pressure sources
    • F15B2211/2658—Control of multiple pressure sources by control of the prime movers
    • 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
    • F15B2211/6309—Electronic controllers using input signals representing a pressure the pressure being a pressure source supply 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
    • F15B2211/6313—Electronic controllers using input signals representing a pressure the pressure being a load pressure
    • 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
    • Y10T137/85978—With pump
    • Y10T137/85986—Pumped fluid control
    • Y10T137/86002—Fluid pressure responsive

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Operation Control Of Excavators (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)
  • Power Steering Mechanism (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

본 발명에 따른 건설기계의 유압시스템은 장비의 조향을 제어하기 위한 스티어링 유닛(20)과, 작업장치의 구동을 제어하기 위한 메인 컨트롤 밸브(30)을 구비하는 건설기계에 적용되는 것으로서, 상기 스티어링 유닛(20)과 상기 메인 컨트롤 밸브(30)로 공급될 작동유를 토출하는 메인펌프(10); 스티어링 유닛(20)의 로드센싱압력을 감지하기 위한 로드센싱 압력센서(60); 상기 메인펌프로부터 토출되는 작동유의 공급유로에 설치되어 상기 로드센싱압력에 대응하여 상기 메인펌프로부터 토출되는 작동유가 상기 스티어링 유닛(20)과 상기 메인 컨트롤 밸브(30)로 분배되어 공급되게 하는 우선밸브(22); 상기 우선밸브에 의해 분배된 작동유를 상기 스티어링 유닛(20)으로 공급하는 공급유로에 작동유를 보충하기 위한 보조펌프(40); 상기 보조펌프(40)를 구동시키기 위한 전동모터(50); 및 상기 로드센싱압력이 기준 로드센싱 압력보다 큰 경우 상기 전동모터(50)를 구동시켜 상기 보조펌프(40)으로부터 토출되는 작동유를 상기 스티어링 유닛(20)으로 추가로 공급시키는 제어부(80)를 포함한다.
PCT/KR2010/007709 2009-12-17 2010-11-03 건설기계의 유압시스템 WO2011074781A2 (ko)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US13/516,520 US9243385B2 (en) 2009-12-17 2010-11-03 Hydraulic system for construction machinery
CN201080056711.0A CN102713088B (zh) 2009-12-17 2010-11-03 工程机械的液压***
EP10837778.9A EP2514880B1 (en) 2009-12-17 2010-11-03 Hydraulic system for construction machinery

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2009-0126081 2009-12-17
KR1020090126081A KR101609882B1 (ko) 2009-12-17 2009-12-17 건설기계의 유압시스템

Publications (2)

Publication Number Publication Date
WO2011074781A2 WO2011074781A2 (ko) 2011-06-23
WO2011074781A3 true WO2011074781A3 (ko) 2011-11-03

Family

ID=44167803

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2010/007709 WO2011074781A2 (ko) 2009-12-17 2010-11-03 건설기계의 유압시스템

Country Status (5)

Country Link
US (1) US9243385B2 (ko)
EP (1) EP2514880B1 (ko)
KR (1) KR101609882B1 (ko)
CN (1) CN102713088B (ko)
WO (1) WO2011074781A2 (ko)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104838073B (zh) * 2012-11-23 2017-03-08 沃尔沃建造设备有限公司 用于控制工程机械的优先功能的设备和方法
CN103410188A (zh) * 2013-07-31 2013-11-27 烟台兴业机械股份有限公司 一种地下铲运机带负载敏感变量的液压***
JP2015090193A (ja) * 2013-11-06 2015-05-11 キャタピラー エス エー アール エル 流体圧回路および作業機械
JP6134263B2 (ja) * 2013-12-27 2017-05-24 株式会社Kcm 油圧駆動システム
CN103774707B (zh) * 2014-01-23 2016-07-27 长安大学 一种平地机工作装置的液压***
DE102014002034A1 (de) * 2014-02-13 2015-08-13 Macgregor Hatlapa Gmbh & Co. Kg Ruderantriebssystem und Verfahren
CN105370531B (zh) * 2015-11-13 2017-10-24 湖南南车时代电动汽车股份有限公司 一种行车安全***

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040050562A (ko) * 2002-12-10 2004-06-16 대우종합기계 주식회사 지게차의 조향 시스템
KR20050066004A (ko) * 2003-12-26 2005-06-30 두산인프라코어 주식회사 전동지게차의 유압펌프 구동모터 제어장치
KR100627950B1 (ko) * 2002-09-11 2006-09-22 현대중공업 주식회사 바퀴식 건설장비의 유압장치
KR20090070522A (ko) * 2007-12-27 2009-07-01 두산인프라코어 주식회사 건설 기계의 유압 공급시스템

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4199942A (en) * 1978-09-28 1980-04-29 Eaton Corporation Load sensing control for hydraulic system
US4453451A (en) * 1980-11-10 1984-06-12 Fiatallis North America, Inc. Hydraulic steering system with automatic emergency pump flow control
DE4311191C2 (de) * 1993-04-05 1995-02-02 Deere & Co Hydrauliksystem zur Versorgung offener oder geschlossener Hydraulikfunktionen
KR0156433B1 (ko) * 1995-09-19 1998-10-15 석진철 전유압조향시스템의 비상조향장치
JP3497947B2 (ja) * 1996-06-11 2004-02-16 日立建機株式会社 油圧駆動装置
JP3268527B2 (ja) * 1996-09-25 2002-03-25 株式会社パブコ 昇降装置の制御方法
JPH11115780A (ja) * 1997-10-15 1999-04-27 Komatsu Ltd 作業車両用ステアリングポンプの容量制御方法および装置
JP4568406B2 (ja) * 2000-06-13 2010-10-27 東芝機械株式会社 油圧制御装置および建設機械
DE10128351B4 (de) * 2001-06-13 2006-03-16 Sauer-Danfoss Holding Aps Hydraulisches Lenksystem

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100627950B1 (ko) * 2002-09-11 2006-09-22 현대중공업 주식회사 바퀴식 건설장비의 유압장치
KR20040050562A (ko) * 2002-12-10 2004-06-16 대우종합기계 주식회사 지게차의 조향 시스템
KR20050066004A (ko) * 2003-12-26 2005-06-30 두산인프라코어 주식회사 전동지게차의 유압펌프 구동모터 제어장치
KR20090070522A (ko) * 2007-12-27 2009-07-01 두산인프라코어 주식회사 건설 기계의 유압 공급시스템

Also Published As

Publication number Publication date
CN102713088B (zh) 2015-06-03
WO2011074781A2 (ko) 2011-06-23
KR101609882B1 (ko) 2016-04-06
US9243385B2 (en) 2016-01-26
KR20110069372A (ko) 2011-06-23
EP2514880B1 (en) 2019-01-23
EP2514880A4 (en) 2017-06-21
CN102713088A (zh) 2012-10-03
EP2514880A2 (en) 2012-10-24
US20120261010A1 (en) 2012-10-18

Similar Documents

Publication Publication Date Title
WO2011074781A3 (ko) 건설기계의 유압시스템
KR102111909B1 (ko) 전자식 유압 브레이크 시스템
JP5689531B2 (ja) 建設機械の油圧ポンプ制御システム
US9334881B2 (en) Industrial vehicle
KR101721097B1 (ko) 건설기계용 유압시스템
EP2256351A3 (en) Hydraulic system with improved complex operation
WO2008084367A3 (en) System and method for controlling actuator position
DE602005004683D1 (de) Hydraulische Steuervorrichtung für Baumaschine
WO2012087012A3 (ko) 전자유압펌프용 비상 제어부를 포함하는 건설기계의 유압 시스템
WO2008105502A1 (ja) 油圧作業機械の安全装置
WO2009006201A3 (en) Track trencher propulsion system with component feedback
EP2161480A4 (en) HYDRAULIC DEVICE AND MACHINING MACHINE
WO2012166224A3 (en) Hydraulic control system having cylinder stall strategy
WO2010074507A3 (ko) 건설기계의 유압펌프 제어장치
CA2551947A1 (en) Load sense boost device
WO2008081843A1 (ja) 作業車両のステアリングシステム
KR20140050031A (ko) 건설기계의 압력 제어시스템
WO2011078580A3 (ko) 건설기계의 유압제어장치
WO2008152856A1 (ja) ステアリングシステム
WO2012023755A3 (ko) 건설기계의 비상 조향 장치
US9605691B2 (en) Oil pressure system for wheel loader
KR101555539B1 (ko) 건설기계의 엔진 제어방법
DE10342789A1 (de) Hydrostatisches Antriebssystem mit einer Sicherheitseinrichtung
KR102430251B1 (ko) 차량 브레이크 시스템용 유압 유닛, 차량용 브레이크 시스템, 그리고 차량 브레이크 시스템의 작동 방법
KR20150114954A (ko) 유압식 건설기계

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 201080056711.0

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10837778

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 13516520

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 2010837778

Country of ref document: EP