JPS57190845A - Hydraulic circuit for hydraulic shovel - Google Patents

Hydraulic circuit for hydraulic shovel

Info

Publication number
JPS57190845A
JPS57190845A JP7556981A JP7556981A JPS57190845A JP S57190845 A JPS57190845 A JP S57190845A JP 7556981 A JP7556981 A JP 7556981A JP 7556981 A JP7556981 A JP 7556981A JP S57190845 A JPS57190845 A JP S57190845A
Authority
JP
Japan
Prior art keywords
revolving
valve
circuit
revolution
led
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
JP7556981A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6238496B2 (enrdf_load_stackoverflow
Inventor
Hideaki Yoshimatsu
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP7556981A priority Critical patent/JPS57190845A/ja
Publication of JPS57190845A publication Critical patent/JPS57190845A/ja
Publication of JPS6238496B2 publication Critical patent/JPS6238496B2/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)
JP7556981A 1981-05-18 1981-05-18 Hydraulic circuit for hydraulic shovel Granted JPS57190845A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7556981A JPS57190845A (en) 1981-05-18 1981-05-18 Hydraulic circuit for hydraulic shovel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7556981A JPS57190845A (en) 1981-05-18 1981-05-18 Hydraulic circuit for hydraulic shovel

Publications (2)

Publication Number Publication Date
JPS57190845A true JPS57190845A (en) 1982-11-24
JPS6238496B2 JPS6238496B2 (enrdf_load_stackoverflow) 1987-08-18

Family

ID=13579937

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7556981A Granted JPS57190845A (en) 1981-05-18 1981-05-18 Hydraulic circuit for hydraulic shovel

Country Status (1)

Country Link
JP (1) JPS57190845A (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6188008A (ja) * 1984-10-08 1986-05-06 Kayaba Ind Co Ltd 油圧制御装置
JPS6427504U (enrdf_load_stackoverflow) * 1987-08-09 1989-02-16
EP0887476A1 (en) * 1997-06-23 1998-12-30 Hitachi Construction Machinery Co., Ltd. Hydraulic drive system for construction machine
EP1672128A2 (en) 2004-12-16 2006-06-21 Doosan Infracore Co., Ltd. Hydraulic control device of an excavator with improved loading performance on a slope
CN108916141A (zh) * 2018-05-29 2018-11-30 武汉船用机械有限责任公司 一种具有多档载荷及速度的高压拖缆机液压控制系统

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5433076A (en) * 1992-10-29 1995-07-18 Hitachi Construction Machinery Co., Ltd. Hydraulic control valve apparatus and hydraulic drive system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6188008A (ja) * 1984-10-08 1986-05-06 Kayaba Ind Co Ltd 油圧制御装置
JPS6427504U (enrdf_load_stackoverflow) * 1987-08-09 1989-02-16
EP0887476A1 (en) * 1997-06-23 1998-12-30 Hitachi Construction Machinery Co., Ltd. Hydraulic drive system for construction machine
EP1672128A2 (en) 2004-12-16 2006-06-21 Doosan Infracore Co., Ltd. Hydraulic control device of an excavator with improved loading performance on a slope
EP1672128A3 (en) * 2004-12-16 2013-04-24 Doosan Infracore Co., Ltd. Hydraulic control device of an excavator with improved loading performance on a slope
CN108916141A (zh) * 2018-05-29 2018-11-30 武汉船用机械有限责任公司 一种具有多档载荷及速度的高压拖缆机液压控制系统

Also Published As

Publication number Publication date
JPS6238496B2 (enrdf_load_stackoverflow) 1987-08-18

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