KR910003223A - 주행식 건설기계의 유압펌프 제어회로 - Google Patents

주행식 건설기계의 유압펌프 제어회로 Download PDF

Info

Publication number
KR910003223A
KR910003223A KR1019900005683A KR900005683A KR910003223A KR 910003223 A KR910003223 A KR 910003223A KR 1019900005683 A KR1019900005683 A KR 1019900005683A KR 900005683 A KR900005683 A KR 900005683A KR 910003223 A KR910003223 A KR 910003223A
Authority
KR
South Korea
Prior art keywords
control circuit
hydraulic pump
construction machine
pilot
pump control
Prior art date
Application number
KR1019900005683A
Other languages
English (en)
Other versions
KR940009216B1 (ko
Inventor
가즈히꼬 후지이
Original Assignee
가메다까 소끼찌
가부시끼가이샤 고오베 세이꼬오쇼
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 가메다까 소끼찌, 가부시끼가이샤 고오베 세이꼬오쇼 filed Critical 가메다까 소끼찌
Publication of KR910003223A publication Critical patent/KR910003223A/ko
Application granted granted Critical
Publication of KR940009216B1 publication Critical patent/KR940009216B1/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
    • 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
    • E02F9/20—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
    • 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
    • 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
    • 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
    • F15B2211/20553—Type of pump variable capacity with pilot circuit, e.g. for controlling a swash plate
    • 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
    • F15B2211/255—Flow control functions
    • 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
    • F15B2211/30—Directional control
    • F15B2211/355—Pilot pressure 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
    • F15B2211/30—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
    • F15B2211/50—Pressure control
    • F15B2211/575—Pilot pressure 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
    • F15B2211/70—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
    • 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
    • F15B2211/78—Control of multiple output members

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)
  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

내용 없음.

Description

주행식 건설기계의 유압펌프 제어회로
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본발명에 따른 유압펌프 제어회로도.
제2도는 레귤레이터 제어압력대 파일롯 프로포셔닝 밸브에 작용하는 파일롯 압력의 다이어그램.
제3도는 제2펌프의 방출률대 레귤레이터 제어압력의 다이어그램.

Claims (1)

  1. 각각 제1 및 제2펌프에 의해 구동되는 2개의 구룹으로 분리된 유압액츄에이터, 각 구룹에 구비된 좌우 차량 구동모우터, 상기 제1 및 제2펌프의 방출측에 위치하며, 상기 좌우 차량구동모우터에 평행하기 상기 제2펌프로부터 오일압력을 공급하는 위치를 가진 변환밸브를 포함하는 주행식 건설기계용 유압펌프 제어회로에 있어서, 상기 유압펌프 제어회로는 상기 제2펌프 및 파일롯 압력원용 방출유량을 제어 레귤레이터 사이에 위치하는 파일롯 프로포셔닝 밸브 및, 좌우 차량 구동밸브에 작용하는 파일롯 포오트에 작용시키는 수단으로 구성되고 상기 파일롯포오트에 작용하는 상기 파일롯 압력의 합에 의해 작동되어 상기 제2펌프 레귤레이터용 제어압력을 발생시키는 것을 특징으로 하는 주행식 건설기계의 유압펌프 제어 회로.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019900005683A 1989-07-07 1990-04-23 주행식 건설기계의 유압펌프 제어회로 KR940009216B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1-176591 1989-07-07
JP1176591A JPH07122276B2 (ja) 1989-07-07 1989-07-07 建設機械の油圧ポンプ制御回路

Publications (2)

Publication Number Publication Date
KR910003223A true KR910003223A (ko) 1991-02-27
KR940009216B1 KR940009216B1 (ko) 1994-10-01

Family

ID=16016245

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019900005683A KR940009216B1 (ko) 1989-07-07 1990-04-23 주행식 건설기계의 유압펌프 제어회로

Country Status (6)

Country Link
US (1) US5052179A (ko)
EP (1) EP0407231B1 (ko)
JP (1) JPH07122276B2 (ko)
KR (1) KR940009216B1 (ko)
DE (1) DE69002895T2 (ko)
ES (1) ES2043304T3 (ko)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2251232B (en) * 1990-09-29 1995-01-04 Samsung Heavy Ind Automatic actuating system for actuators of excavator
DE4100988C2 (de) * 1991-01-15 2001-05-10 Linde Ag Hydraulisches Antriebssystem
US5063739A (en) * 1991-02-19 1991-11-12 Caterpillar Inc. Load sensing hydraulic control system
KR100200028B1 (ko) * 1994-10-29 1999-06-15 토니 헬샴 중장비의 직진주행장치
GB9425273D0 (en) * 1994-12-14 1995-02-08 Trinova Ltd Hydraulic control system
IT1289120B1 (it) * 1996-07-04 1998-09-25 Fki Fai Komatsu Ind Spa Circuito idraulico di comando per organi di lavoro,in particolare in macchine movimento terra
US6003313A (en) * 1996-10-21 1999-12-21 Farrar; Johnny High pressure to low pressure exchange system for hydraulic drives
JP4111286B2 (ja) * 1998-06-30 2008-07-02 コベルコ建機株式会社 建設機械の走行制御方法及び同装置
KR100503611B1 (ko) * 1998-07-24 2005-09-26 두산인프라코어 주식회사 텔레스코픽 핸들러의 유압 제어 시스템
JP3491600B2 (ja) * 2000-04-13 2004-01-26 コベルコ建機株式会社 建設機械の油圧制御回路
JP4290861B2 (ja) * 2000-07-28 2009-07-08 コベルコクレーン株式会社 クレーンの油圧回路
JP3614121B2 (ja) * 2001-08-22 2005-01-26 コベルコ建機株式会社 建設機械の油圧装置
WO2005024208A1 (ja) * 2003-09-02 2005-03-17 Komatsu Ltd. 作業車両用エンジンのパワー出力の制御方法及び制御装置
JP2006329341A (ja) * 2005-05-26 2006-12-07 Kobelco Contstruction Machinery Ltd 作業機械の油圧制御装置
FR2890944B1 (fr) * 2005-09-19 2007-10-26 Seb Sa Appareil electromenager comportant des moyens pour detecter l'ouverture d'un bouchon.
JP4380643B2 (ja) * 2006-02-20 2009-12-09 コベルコ建機株式会社 作業機械の油圧制御装置
ITMO20070097A1 (it) * 2007-03-20 2008-09-21 Safim S P A "apparato idraulico"
KR100974283B1 (ko) * 2008-08-08 2010-08-06 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 굴삭 및 파이프 레잉 작업을 위한 유량 분배 시스템
WO2012125792A2 (en) 2011-03-15 2012-09-20 Husco International, Inc. Multiple function hydraulic system with a variable displacement pump and a hydrostatic pump-motor
KR101975062B1 (ko) * 2011-12-27 2019-05-03 두산인프라코어 주식회사 건설기계의 유압시스템
EP3216927A4 (en) * 2014-11-05 2018-08-01 Volvo Construction Equipment AB Driving straight ahead device for construction machine and control method therefor
KR102388136B1 (ko) * 2016-05-18 2022-04-19 현대두산인프라코어(주) 건설 기계의 안전 시스템
KR102540110B1 (ko) * 2017-01-10 2023-06-05 에이치디현대인프라코어 주식회사 건설 기계의 유압 시스템
CN111712604B (zh) * 2018-03-19 2023-01-10 沃尔沃建筑设备公司 电动液压系统和用于控制电动液压系统的方法
JP6992721B2 (ja) * 2018-09-28 2022-01-13 コベルコ建機株式会社 走行式作業機械の油圧駆動装置
JP7268504B2 (ja) * 2019-06-28 2023-05-08 コベルコ建機株式会社 油圧制御装置
US20230175533A1 (en) * 2021-12-08 2023-06-08 Team Industries, Inc. Fixed displacement hydraulic pump match flow demand control system

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4965466A (ko) * 1972-10-31 1974-06-25
US3987623A (en) * 1976-01-23 1976-10-26 Caterpillar Tractor Co. Controlled priority fluid system of a crawler type vehicle
US4055046A (en) * 1976-12-22 1977-10-25 Caterpillar Tractor Co. Control system having override for fluid operated work elements
US4073141A (en) * 1977-03-17 1978-02-14 Caterpillar Tractor Co. Fluid control system with priority flow
US4087968A (en) * 1977-04-28 1978-05-09 Caterpillar Tractor Co. Flow control valve for combining two dissimilar independent systems to a common pressure source
JPS55135342A (en) * 1979-04-06 1980-10-22 Victor Co Of Japan Ltd Reproducing stylus of reproducing element of variation detection type for electrostatic capacity value
US4426194A (en) * 1981-03-06 1984-01-17 Sundstrand Corporation Viscosity compensating circuits
JPS57197336A (en) * 1981-05-29 1982-12-03 Komatsu Ltd Oil-pressure circuit for turning excavator
DE3237095A1 (de) * 1982-10-07 1984-04-12 Salzgitter Maschinen Und Anlagen Ag, 3320 Salzgitter Ventil und anwendungen des ventils
DE3609399A1 (de) * 1985-03-23 1986-10-16 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Hydrauliksystem
CN1007632B (zh) * 1985-12-28 1990-04-18 日立建机株式会社 液压建筑机械的控制系统

Also Published As

Publication number Publication date
ES2043304T3 (es) 1993-12-16
DE69002895D1 (de) 1993-09-30
JPH07122276B2 (ja) 1995-12-25
EP0407231B1 (en) 1993-08-25
KR940009216B1 (ko) 1994-10-01
US5052179A (en) 1991-10-01
JPH0339528A (ja) 1991-02-20
EP0407231A1 (en) 1991-01-09
DE69002895T2 (de) 1994-01-13

Similar Documents

Publication Publication Date Title
KR910003223A (ko) 주행식 건설기계의 유압펌프 제어회로
MY131602A (en) Hydraulic device for construction machinery
GB1027184A (en) Hydraulic forming press
SE8902253L (sv) Lastmaskin med en foersta och en andra pump foer matning av tryckolja till minst en hydrauliskt driven arbetskomponent saasom en hydraulcylinder eller hydraulmotor
KR960023845A (ko) 지게차의 앤티스톨밸브를 이용한 유압회로
KR960037139A (ko) 진동발생장치
GB1387491A (en) Variable displacement piston pumps or motors
KR960001360A (ko) 유압구동식 주행장치의 주행제어회로
GB1382764A (en) Fluid actuated vibration generators
CA2133150A1 (en) Hydraulic Operational System for an Injection Molding Machine
KR830005486A (ko) 날개피치작동 시스템
KR920703939A (ko) 유압굴삭기의 주행속도 변환장치
GB1418218A (en) Linear hydraulic drive
KR920701723A (ko) 유압구동차의 가변용량 펌프제어장치
GB1005387A (en) Improvements in or relating to hydraulic pumps or motors
GB1131750A (en) Improvements in or relating to hydraulic drive systems
ES8607145A1 (es) Un dispositivo de direccion de potencia
GB1379594A (en) Hydraulically actuated diaphragm pumps
US4419055A (en) Low pressure fluid supply system
SU806911A1 (ru) Гидропривод
ATE233375T1 (de) Einrichtung zur steuerung eines hydraulischen motors
GB1473420A (en) Control means for hydraulically driven grabs
JPS57174541A (en) Oil-pressure working machine
JPS57100235A (en) Fluid pressure circuit for working machine
SU1560849A1 (ru) Гидропривод

Legal Events

Date Code Title Description
A201 Request for examination
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 19970830

Year of fee payment: 4

LAPS Lapse due to unpaid annual fee