KR900700699A - 유압식 굴삭기의 유압제어장치 - Google Patents

유압식 굴삭기의 유압제어장치

Info

Publication number
KR900700699A
KR900700699A KR1019890701117A KR890701117A KR900700699A KR 900700699 A KR900700699 A KR 900700699A KR 1019890701117 A KR1019890701117 A KR 1019890701117A KR 890701117 A KR890701117 A KR 890701117A KR 900700699 A KR900700699 A KR 900700699A
Authority
KR
South Korea
Prior art keywords
hydraulic
pressure
control
pilot signal
cut
Prior art date
Application number
KR1019890701117A
Other languages
English (en)
Other versions
KR0141982B1 (ko
Inventor
노부히사 가미가와
기미오 니시다
Original Assignee
다나까 마사오
가부시끼가이샤 고마쓰 세이사꾸쇼오
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 다나까 마사오, 가부시끼가이샤 고마쓰 세이사꾸쇼오 filed Critical 다나까 마사오
Publication of KR900700699A publication Critical patent/KR900700699A/ko
Application granted granted Critical
Publication of KR0141982B1 publication Critical patent/KR0141982B1/ko

Links

Classifications

    • 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
    • E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
    • E02F3/80—Component parts
    • E02F3/84—Drives or control devices therefor, e.g. hydraulic drive 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
    • E02F9/2296—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
    • E02F9/2232—Control of flow rate; Load sensing arrangements using one or more variable displacement 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
    • E02F9/2292—Systems with two or more pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/002—Hydraulic systems to change the pump delivery

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

내용 없음

Description

유압식 굴삭기의 유압제어장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제4도는 제1발명에 관한 유압제어장치의 실시예를 포함하는 유압회로도이다.
제5도는 제1발명의 유압제어장치 특성을 표시한 그래프이다.

Claims (2)

  1. 유압마력이 일정하게 되도록 제어되고, 또한 주회로 유압이 릴리이프 압력 근처로 되면, 전기한 제어가 컷오프(cutoff)되도록 제어된, 유압식 굴삭기의 유압제어장치에 있어서, 파일럿 신호(PC7)를 얻어 릴리이프 압력이 상승하는 가변 릴리이프 밸브(60A)와, 전기한 파일럿 신호(PC7)를 단속(斷續)하기 위한 전자식전환밸브(80)와, 파일럿신호(PC6)를 입력하여 전기한 컷오프제어를 해제하는 가변 컷오프제어밸브(10A)와, 전기한 파일럿신호(PC6)를 단속하기 위한 전자식 전환밸브(70)와, 전기한 전자식 전환밸브(70), (80)가 병렬접속이며, 이들을 개폐하는 스위치(90)를 설치한 전기 회로(X01)를 구비하고, 전기한 스위치(90)의 개방조작 동안, 릴리이프 압력과 유량을 향상시킨 것을 특징으로 하는 유압식 굴삭기의 유압제어장치.
  2. 제1항에 있어서, 전기회로(X01)에 타이머를 구비한 것을 특징으로 하는 유압식 굴삭기의 유압제어장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019890701117A 1988-02-25 1989-02-13 유압식 굴삭기의 유압제어장치 KR0141982B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP63042904A JPH01220706A (ja) 1988-02-25 1988-02-25 油圧式掘削機の油圧制御装置
JP63-42904 1988-02-25
PCT/JP1989/000140 WO1989008190A1 (en) 1988-02-25 1989-02-13 Hydraulic control unit of hydraulic excavators

Publications (2)

Publication Number Publication Date
KR900700699A true KR900700699A (ko) 1990-08-16
KR0141982B1 KR0141982B1 (ko) 1999-02-18

Family

ID=12649020

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019890701117A KR0141982B1 (ko) 1988-02-25 1989-02-13 유압식 굴삭기의 유압제어장치

Country Status (6)

Country Link
US (1) US5077974A (ko)
EP (1) EP0372081B1 (ko)
JP (1) JPH01220706A (ko)
KR (1) KR0141982B1 (ko)
DE (1) DE68923934T2 (ko)
WO (1) WO1989008190A1 (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100752115B1 (ko) * 2004-12-30 2007-08-24 두산인프라코어 주식회사 굴삭기의 유압펌프 제어시스템

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07103593B2 (ja) * 1990-06-06 1995-11-08 株式会社小松製作所 積み込み作業車両の制御装置及び方法
JPH04121503U (ja) * 1991-04-16 1992-10-30 住友建機株式会社 油圧式建設車両の自動昇圧回路
US5456077A (en) * 1994-04-22 1995-10-10 Mcneilus Truck And Manufacturing, Inc. Remote unloader hydraulic valve system
US5540049A (en) * 1995-08-01 1996-07-30 Caterpillar Inc. Control system and method for a hydraulic actuator with velocity and force modulation control
JP4026969B2 (ja) * 1999-01-22 2007-12-26 株式会社小松製作所 建設機械の油圧回路
US6408676B1 (en) 1999-03-31 2002-06-25 Caterpillar Inc. Method and apparatus for determining the status of a relief valve
KR100797315B1 (ko) * 2001-07-16 2008-01-23 두산인프라코어 주식회사 굴삭기의 주행 및 프론트작업의 복합작업용 유압제어장치
KR100594851B1 (ko) * 2002-04-30 2006-07-03 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 유압식 브레이크장치
JP4082935B2 (ja) * 2002-06-05 2008-04-30 株式会社小松製作所 ハイブリッド式建設機械
KR100988429B1 (ko) * 2003-12-26 2010-10-18 두산인프라코어 주식회사 굴삭기의 주행복합작업용 유압제어장치
KR100988443B1 (ko) * 2003-12-26 2010-10-18 두산인프라코어 주식회사 굴삭기의 주행 및 프론트작업의 복합동작용 유압제어장치
US9086143B2 (en) 2010-11-23 2015-07-21 Caterpillar Inc. Hydraulic fan circuit having energy recovery
CN102140807B (zh) * 2011-01-11 2012-05-23 徐州徐工挖掘机械有限公司 一种提高挖掘机挖掘操纵特性和平整作业特性的方法
CN103352886B (zh) * 2013-06-28 2015-12-23 山河智能装备股份有限公司 能量回收利用液压控制阀

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE757640A (fr) * 1969-10-16 1971-04-16 Borg Warner Systemes hydrauliques, notamment pour la regulation d'une pompea debit variable
JPS5217795Y2 (ko) * 1971-04-26 1977-04-22
JPS54126146U (ko) * 1978-02-22 1979-09-03
DE3024399A1 (de) * 1980-06-28 1982-01-21 Linde Ag, 6200 Wiesbaden Regeleinrichtung fuer ein aggregat aus mehreren, von einer gemeinsamen primaerenergiequelle angetriebenen pumpe
US4571941A (en) * 1980-12-27 1986-02-25 Hitachi Construction Machinery Co, Ltd. Hydraulic power system
JPS57184749A (en) * 1981-05-01 1982-11-13 Hitachi Constr Mach Co Ltd Control device for hydraulic system
JPS5876853U (ja) * 1981-11-19 1983-05-24 株式会社小松製作所 油圧駆動装置
US4481770A (en) * 1982-03-22 1984-11-13 Caterpillar Tractor Co. Fluid system with flow compensated torque control
JPH0633772B2 (ja) * 1983-12-29 1994-05-02 カヤバ工業株式会社 可変容量ポンプの制御装置
JPS60250132A (ja) * 1984-05-25 1985-12-10 Kayaba Ind Co Ltd 建設車両の油圧制御回路
JPS6193552A (ja) * 1984-10-15 1986-05-12 Matsushita Electric Works Ltd 充電式電気機器
JPS6193552U (ko) * 1984-11-27 1986-06-17
JPS6256801A (ja) * 1985-09-06 1987-03-12 Toshiba Corp 曲り導体のピツチ間距離測定器
JPS6256801U (ko) * 1985-09-30 1987-04-08
JPS62167880A (ja) * 1986-01-20 1987-07-24 Nippon Kokan Kk <Nkk> 管内外面のコ−テイング装置
JPH0740702Y2 (ja) * 1986-04-11 1995-09-20 株式会社小松製作所 移動式建設機械の油圧駆動装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100752115B1 (ko) * 2004-12-30 2007-08-24 두산인프라코어 주식회사 굴삭기의 유압펌프 제어시스템

Also Published As

Publication number Publication date
KR0141982B1 (ko) 1999-02-18
EP0372081A4 (ko) 1994-03-16
WO1989008190A1 (en) 1989-09-08
DE68923934T2 (de) 1996-04-11
DE68923934D1 (de) 1995-09-28
EP0372081A1 (en) 1990-06-13
US5077974A (en) 1992-01-07
JPH01220706A (ja) 1989-09-04
EP0372081B1 (en) 1995-08-23

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