JPH0429816B2 - - Google Patents

Info

Publication number
JPH0429816B2
JPH0429816B2 JP59054385A JP5438584A JPH0429816B2 JP H0429816 B2 JPH0429816 B2 JP H0429816B2 JP 59054385 A JP59054385 A JP 59054385A JP 5438584 A JP5438584 A JP 5438584A JP H0429816 B2 JPH0429816 B2 JP H0429816B2
Authority
JP
Japan
Prior art keywords
pilot
circuit
hydraulic
valve
switching valve
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 - Lifetime
Application number
JP59054385A
Other languages
English (en)
Japanese (ja)
Other versions
JPS60199127A (ja
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 filed Critical
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 JPS60199127A (ja) 1985-10-08
JPH0429816B2 true JPH0429816B2 (de) 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 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3413092B2 (ja) * 1998-01-08 2003-06-03 日立建機株式会社 油圧作業機のポンプ故障警告装置

Also Published As

Publication number Publication date
JPS60199127A (ja) 1985-10-08

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term