JPH0372769B2 - - Google Patents

Info

Publication number
JPH0372769B2
JPH0372769B2 JP60007077A JP707785A JPH0372769B2 JP H0372769 B2 JPH0372769 B2 JP H0372769B2 JP 60007077 A JP60007077 A JP 60007077A JP 707785 A JP707785 A JP 707785A JP H0372769 B2 JPH0372769 B2 JP H0372769B2
Authority
JP
Japan
Prior art keywords
switching valve
valve
pilot
oil
travel motor
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
JP60007077A
Other languages
English (en)
Japanese (ja)
Other versions
JPS61165429A (ja
Inventor
Wataru Kubomoto
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.)
Kobelco Construction Machinery Co Ltd
Original Assignee
Yutani Heavy Industries 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 Yutani Heavy Industries Ltd filed Critical Yutani Heavy Industries Ltd
Priority to JP60007077A priority Critical patent/JPS61165429A/ja
Publication of JPS61165429A publication Critical patent/JPS61165429A/ja
Publication of JPH0372769B2 publication Critical patent/JPH0372769B2/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
    • E02F9/2221—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
    • E02F9/2278—Hydraulic circuits
    • E02F9/2292—Systems with two or more pumps

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)
JP60007077A 1985-01-17 1985-01-17 建設機械の油圧回路 Granted JPS61165429A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60007077A JPS61165429A (ja) 1985-01-17 1985-01-17 建設機械の油圧回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60007077A JPS61165429A (ja) 1985-01-17 1985-01-17 建設機械の油圧回路

Publications (2)

Publication Number Publication Date
JPS61165429A JPS61165429A (ja) 1986-07-26
JPH0372769B2 true JPH0372769B2 (enrdf_load_stackoverflow) 1991-11-19

Family

ID=11656017

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60007077A Granted JPS61165429A (ja) 1985-01-17 1985-01-17 建設機械の油圧回路

Country Status (1)

Country Link
JP (1) JPS61165429A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5115835A (en) * 1990-01-26 1992-05-26 Zexel Corporation Stacked type hydraulic control valve system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57197333A (en) * 1981-05-27 1982-12-03 Hitachi Constr Mach Co Ltd Oil-pressure circuit for oil-pressure shovel
JPS604654U (ja) * 1983-06-23 1985-01-14 株式会社小松製作所 パワ−シヨベルの油圧回路装置

Also Published As

Publication number Publication date
JPS61165429A (ja) 1986-07-26

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