JPS60199127A - 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
JPS60199127A
JPS60199127A JP59054385A JP5438584A JPS60199127A JP S60199127 A JPS60199127 A JP S60199127A JP 59054385 A JP59054385 A JP 59054385A JP 5438584 A JP5438584 A JP 5438584A JP S60199127 A JPS60199127 A JP S60199127A
Authority
JP
Japan
Prior art keywords
circuit
switching valve
pilot
valve
hydraulic
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
JP59054385A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0429816B2 (enrdf_load_stackoverflow
Inventor
Kenzo Yanagibashi
憲三 柳橋
Toshihiro Ono
大野　俊弘
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 JP59054385A priority Critical patent/JPS60199127A/ja
Publication of JPS60199127A publication Critical patent/JPS60199127A/ja
Publication of JPH0429816B2 publication Critical patent/JPH0429816B2/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
    • E02F9/2296—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
    • E02F9/2235—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps 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)
  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)
JP59054385A 1984-03-23 1984-03-23 土木・建設機械の油圧回路 Granted JPS60199127A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59054385A JPS60199127A (ja) 1984-03-23 1984-03-23 土木・建設機械の油圧回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59054385A JPS60199127A (ja) 1984-03-23 1984-03-23 土木・建設機械の油圧回路

Publications (2)

Publication Number Publication Date
JPS60199127A true JPS60199127A (ja) 1985-10-08
JPH0429816B2 JPH0429816B2 (enrdf_load_stackoverflow) 1992-05-20

Family

ID=12969212

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59054385A Granted JPS60199127A (ja) 1984-03-23 1984-03-23 土木・建設機械の油圧回路

Country Status (1)

Country Link
JP (1) JPS60199127A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0928849B1 (en) * 1998-01-08 2008-08-13 Hitachi Construction Machinery Co., Ltd. Pump failure alarm system for hydraulic working machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0928849B1 (en) * 1998-01-08 2008-08-13 Hitachi Construction Machinery Co., Ltd. Pump failure alarm system for hydraulic working machine

Also Published As

Publication number Publication date
JPH0429816B2 (enrdf_load_stackoverflow) 1992-05-20

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term