AU630353B2 - Hydraulic circuit device of construction vehicle - Google Patents

Hydraulic circuit device of construction vehicle Download PDF

Info

Publication number
AU630353B2
AU630353B2 AU35655/89A AU3565589A AU630353B2 AU 630353 B2 AU630353 B2 AU 630353B2 AU 35655/89 A AU35655/89 A AU 35655/89A AU 3565589 A AU3565589 A AU 3565589A AU 630353 B2 AU630353 B2 AU 630353B2
Authority
AU
Australia
Prior art keywords
hydraulic circuit
pressure
pilot
hydraulic
fluid
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
AU35655/89A
Other languages
English (en)
Other versions
AU3565589A (en
Inventor
Masanori Ikari
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Komatsu Ltd
Komatsu MEC Corp
Original Assignee
Komatsu Ltd
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 Komatsu Ltd filed Critical Komatsu Ltd
Publication of AU3565589A publication Critical patent/AU3565589A/en
Application granted granted Critical
Publication of AU630353B2 publication Critical patent/AU630353B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • E02F9/2278—Hydraulic circuits
    • E02F9/2292—Systems with two or more pumps
    • 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
    • E02F9/22—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
    • E02F9/2221—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)
AU35655/89A 1988-05-16 1989-05-16 Hydraulic circuit device of construction vehicle Expired - Fee Related AU630353B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP63-63420 1988-05-16
JP1988063420U JP2511629Y2 (ja) 1988-05-16 1988-05-16 油圧回路

Publications (2)

Publication Number Publication Date
AU3565589A AU3565589A (en) 1989-12-12
AU630353B2 true AU630353B2 (en) 1992-10-29

Family

ID=13228780

Family Applications (1)

Application Number Title Priority Date Filing Date
AU35655/89A Expired - Fee Related AU630353B2 (en) 1988-05-16 1989-05-16 Hydraulic circuit device of construction vehicle

Country Status (7)

Country Link
US (1) US5127227A (US20100154141A1-20100624-C00001.png)
EP (1) EP0404946B1 (US20100154141A1-20100624-C00001.png)
JP (1) JP2511629Y2 (US20100154141A1-20100624-C00001.png)
KR (1) KR900701592A (US20100154141A1-20100624-C00001.png)
AU (1) AU630353B2 (US20100154141A1-20100624-C00001.png)
DE (1) DE68926854T2 (US20100154141A1-20100624-C00001.png)
WO (1) WO1989011411A1 (US20100154141A1-20100624-C00001.png)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0776859A (ja) * 1993-09-09 1995-03-20 Hitachi Constr Mach Co Ltd 建設機械の油圧駆動装置
US5577435A (en) * 1996-03-11 1996-11-26 New Holland North America, Inc. High flow hydraulic circuit for tractors
US6321535B2 (en) * 1997-11-21 2001-11-27 Komatsu Ltd. Hydraulic circuit for working vehicle
US6357231B1 (en) 2000-05-09 2002-03-19 Clark Equipment Company Hydraulic pump circuit for mini excavators
KR100471836B1 (ko) * 2002-05-09 2005-03-08 현대자동차주식회사 듀얼 서킷형 비상 동력 조향 장치
ITMO20070097A1 (it) * 2007-03-20 2008-09-21 Safim S P A "apparato idraulico"
JP5048068B2 (ja) * 2007-08-09 2012-10-17 株式会社小松製作所 作業車両及び作業車両の作動油量制御方法
US8051651B2 (en) * 2007-08-30 2011-11-08 Coneqtec Corp. Hydraulic flow control system
JP5351813B2 (ja) * 2010-03-31 2013-11-27 株式会社クボタ 作業車の油圧システム
CN113606207B (zh) * 2021-06-28 2022-07-05 徐工集团工程机械股份有限公司科技分公司 一种装载机液压系统及装载机

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU425749B2 (en) * 1970-03-03 1971-09-09 General Signal Corporation Three pump hydraulic system incorporating an unloader
GB1373902A (en) * 1972-02-25 1974-11-13 Bosch Gmbh Robert Hydraulic system for a vehicle having a steering system and air conditioning unit

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1952034A1 (de) * 1969-10-15 1971-04-22 Linde Ag Steuereinrichtung fuer eine hydraulische Anlage und Ventil hierzu
US4030623A (en) * 1971-12-13 1977-06-21 Caterpillar Tractor Co. Hydraulic circuitry for an excavator
JPS5614118Y2 (US20100154141A1-20100624-C00001.png) * 1973-09-11 1981-04-02
FR2250908B3 (US20100154141A1-20100624-C00001.png) * 1973-11-14 1977-08-12 Massey Ferguson Services Nv
US3868821A (en) * 1974-03-20 1975-03-04 Tyrone Hydraulics Automatic pump control system
US3975909A (en) * 1975-02-26 1976-08-24 Tyrone Hydraulics, Inc. Engine sensor hydraulic control system
US3987623A (en) * 1976-01-23 1976-10-26 Caterpillar Tractor Co. Controlled priority fluid system of a crawler type vehicle
DE2808196A1 (de) * 1978-02-25 1979-09-06 Bosch Gmbh Robert Hydraulische steuereinrichtung
JPS5614118U (US20100154141A1-20100624-C00001.png) * 1979-07-13 1981-02-06
JPS5614118A (en) * 1979-07-16 1981-02-10 Raito Kogyo Kk Measuring instrument for volume of fluid
DE3044171A1 (de) * 1980-11-24 1982-06-16 Linde Ag, 6200 Wiesbaden Antriebssystem mit mindestens zwei teilsystemen
JPS57177403A (en) * 1981-04-25 1982-11-01 Daikin Ind Ltd Combined flow type flow control circuit associated with pressure compensation
JPS5817052A (ja) * 1981-07-23 1983-02-01 Mitsubishi Electric Corp リ−ル駆動電動機の制御装置
JPS5932515B2 (ja) * 1981-09-11 1984-08-09 信越化学工業株式会社 ウレタン樹脂用離型剤
JPS5845297U (ja) * 1981-09-21 1983-03-26 三菱重工業株式会社 フォ−クリフトの油圧回路
DE3702002A1 (de) * 1987-01-23 1988-08-04 Hydromatik Gmbh Steuervorrichtung fuer ein hydrostatisches getriebe fuer wenigstens zwei verbraucher

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU425749B2 (en) * 1970-03-03 1971-09-09 General Signal Corporation Three pump hydraulic system incorporating an unloader
GB1373902A (en) * 1972-02-25 1974-11-13 Bosch Gmbh Robert Hydraulic system for a vehicle having a steering system and air conditioning unit

Also Published As

Publication number Publication date
DE68926854D1 (de) 1996-08-22
WO1989011411A1 (en) 1989-11-30
EP0404946A4 (en) 1991-07-03
EP0404946B1 (en) 1996-07-17
AU3565589A (en) 1989-12-12
US5127227A (en) 1992-07-07
EP0404946A1 (en) 1991-01-02
DE68926854T2 (de) 1997-01-02
KR900701592A (ko) 1990-12-03
JP2511629Y2 (ja) 1996-09-25
JPH01165766U (US20100154141A1-20100624-C00001.png) 1989-11-20

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