JPH0255568B2 - - Google Patents

Info

Publication number
JPH0255568B2
JPH0255568B2 JP7149080A JP7149080A JPH0255568B2 JP H0255568 B2 JPH0255568 B2 JP H0255568B2 JP 7149080 A JP7149080 A JP 7149080A JP 7149080 A JP7149080 A JP 7149080A JP H0255568 B2 JPH0255568 B2 JP H0255568B2
Authority
JP
Japan
Prior art keywords
pump
port
pilot
valve
pressure
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
Application number
JP7149080A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57240A (en
Inventor
Hidekazu Sato
Mitsuru Arai
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
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
Priority to JP7149080A priority Critical patent/JPS57240A/ja
Publication of JPS57240A publication Critical patent/JPS57240A/ja
Publication of JPH0255568B2 publication Critical patent/JPH0255568B2/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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)
JP7149080A 1980-05-30 1980-05-30 Controller for oil pressure of construction equipment Granted JPS57240A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7149080A JPS57240A (en) 1980-05-30 1980-05-30 Controller for oil pressure of construction equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7149080A JPS57240A (en) 1980-05-30 1980-05-30 Controller for oil pressure of construction equipment

Publications (2)

Publication Number Publication Date
JPS57240A JPS57240A (en) 1982-01-05
JPH0255568B2 true JPH0255568B2 (ko) 1990-11-27

Family

ID=13462146

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7149080A Granted JPS57240A (en) 1980-05-30 1980-05-30 Controller for oil pressure of construction equipment

Country Status (1)

Country Link
JP (1) JPS57240A (ko)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0429851Y2 (ko) * 1987-11-19 1992-07-20
TW442324B (en) 1996-12-06 2001-06-23 Engelhard Corp Catalytic metal plate

Also Published As

Publication number Publication date
JPS57240A (en) 1982-01-05

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