JPS58146629A - 土木・建設機械の油圧回路 - Google Patents

土木・建設機械の油圧回路

Info

Publication number
JPS58146629A
JPS58146629A JP57027522A JP2752282A JPS58146629A JP S58146629 A JPS58146629 A JP S58146629A JP 57027522 A JP57027522 A JP 57027522A JP 2752282 A JP2752282 A JP 2752282A JP S58146629 A JPS58146629 A JP S58146629A
Authority
JP
Japan
Prior art keywords
control valve
valve
switching valve
oil
directional
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.)
Granted
Application number
JP57027522A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0258412B2 (enrdf_load_stackoverflow
Inventor
Seiji Tamura
誠二 田村
Toshimichi Ikeda
利道 池田
Toichi Hirata
東一 平田
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.)
Hitachi Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery Co 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 Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Priority to JP57027522A priority Critical patent/JPS58146629A/ja
Publication of JPS58146629A publication Critical patent/JPS58146629A/ja
Publication of JPH0258412B2 publication Critical patent/JPH0258412B2/ja
Granted 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
    • 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

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)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)
JP57027522A 1982-02-24 1982-02-24 土木・建設機械の油圧回路 Granted JPS58146629A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57027522A JPS58146629A (ja) 1982-02-24 1982-02-24 土木・建設機械の油圧回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57027522A JPS58146629A (ja) 1982-02-24 1982-02-24 土木・建設機械の油圧回路

Publications (2)

Publication Number Publication Date
JPS58146629A true JPS58146629A (ja) 1983-09-01
JPH0258412B2 JPH0258412B2 (enrdf_load_stackoverflow) 1990-12-07

Family

ID=12223451

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57027522A Granted JPS58146629A (ja) 1982-02-24 1982-02-24 土木・建設機械の油圧回路

Country Status (1)

Country Link
JP (1) JPS58146629A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6233950A (ja) * 1985-08-06 1987-02-13 Hitachi Constr Mach Co Ltd 油圧機械の油圧回路
JPS6255665U (enrdf_load_stackoverflow) * 1985-09-25 1987-04-07
EP3290597A1 (en) * 2016-09-06 2018-03-07 Doosan Infracore Co., Ltd. Method of controlling a main control valve of an excavator and apparatus for performing the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6233950A (ja) * 1985-08-06 1987-02-13 Hitachi Constr Mach Co Ltd 油圧機械の油圧回路
JPS6255665U (enrdf_load_stackoverflow) * 1985-09-25 1987-04-07
EP3290597A1 (en) * 2016-09-06 2018-03-07 Doosan Infracore Co., Ltd. Method of controlling a main control valve of an excavator and apparatus for performing the same
KR20180027088A (ko) * 2016-09-06 2018-03-14 두산인프라코어 주식회사 굴삭기의 메인 컨트롤 밸브 제어 방법 및 이를 수행하기 위한 장치
US10392779B2 (en) 2016-09-06 2019-08-27 Doosan Infracore Co., Ltd. Method of controlling a main control valve of an excavator and apparatus for performing the same

Also Published As

Publication number Publication date
JPH0258412B2 (enrdf_load_stackoverflow) 1990-12-07

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