JPS6330452B2 - - Google Patents

Info

Publication number
JPS6330452B2
JPS6330452B2 JP56024786A JP2478681A JPS6330452B2 JP S6330452 B2 JPS6330452 B2 JP S6330452B2 JP 56024786 A JP56024786 A JP 56024786A JP 2478681 A JP2478681 A JP 2478681A JP S6330452 B2 JPS6330452 B2 JP S6330452B2
Authority
JP
Japan
Prior art keywords
control valve
pressure
swing
circuit
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
Application number
JP56024786A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57140434A (en
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 JP2478681A priority Critical patent/JPS57140434A/ja
Publication of JPS57140434A publication Critical patent/JPS57140434A/ja
Publication of JPS6330452B2 publication Critical patent/JPS6330452B2/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
    • E02F9/2292—Systems with two or more pumps
    • 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

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)
JP2478681A 1981-02-20 1981-02-20 Oil-pressure circuit for oil-pressure shovel Granted JPS57140434A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2478681A JPS57140434A (en) 1981-02-20 1981-02-20 Oil-pressure circuit for oil-pressure shovel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2478681A JPS57140434A (en) 1981-02-20 1981-02-20 Oil-pressure circuit for oil-pressure shovel

Publications (2)

Publication Number Publication Date
JPS57140434A JPS57140434A (en) 1982-08-31
JPS6330452B2 true JPS6330452B2 (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html) 1988-06-17

Family

ID=12147862

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2478681A Granted JPS57140434A (en) 1981-02-20 1981-02-20 Oil-pressure circuit for oil-pressure shovel

Country Status (1)

Country Link
JP (1) JPS57140434A (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998012391A1 (fr) * 1996-09-19 1998-03-26 Yanmar Diesel Engine Co., Ltd. Circuit hydraulique pour excavatrice tournante

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2680300B2 (ja) * 1986-07-29 1997-11-19 東芝機械株式会社 油圧シヨベルの油圧回路
JP4838555B2 (ja) * 2005-09-05 2011-12-14 株式会社渋彰建設 油圧回路及び電気制御回路並びに油圧モータ切断装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5774441A (en) * 1980-10-27 1982-05-10 Daikin Ind Ltd Construction machinery such as power shovel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998012391A1 (fr) * 1996-09-19 1998-03-26 Yanmar Diesel Engine Co., Ltd. Circuit hydraulique pour excavatrice tournante

Also Published As

Publication number Publication date
JPS57140434A (en) 1982-08-31

Similar Documents

Publication Publication Date Title
US9783960B2 (en) Driving device for work machine
US4561824A (en) Hydraulic drive system for civil engineering and construction machinery
KR100297882B1 (ko) 유량제어장치
CN105971951A (zh) 油压驱动系统
US11078646B2 (en) Shovel and control valve for shovel
JP7221101B2 (ja) 油圧ショベル
US4614475A (en) Hydraulic circuit system for civil engineering and architectural machinery
EP1069316B1 (en) Method and device for controllably feeding hydraulic oil
US12371873B2 (en) Work machine
EP0059471B1 (en) Hydrostatic drive system for civil engineering and construction machinery
JPS6330452B2 (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html)
JPH0672437B2 (ja) 油圧シヨベルの油圧回路
US20240035255A1 (en) Valve unit and valve equipment
JPS5985046A (ja) 油圧シヨベルの油圧回路
KR0169880B1 (ko) 굴삭기의 붐 상승속도 및 선회속도 조절장치
JPS58153829A (ja) 油圧シヨベルの油圧回路
JP2766365B2 (ja) 油圧ショベルの油圧回路
US11208787B2 (en) Hydraulic drive system for work machine
JPS58176328A (ja) 油圧シヨベルの油圧回路
JPH0571143A (ja) 建設機械の油圧回路
JPH0534458B2 (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html)
JPS6311493B2 (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html)
JPH0637091Y2 (ja) 土木・建設機械の油圧駆動装置
JP2685870B2 (ja) 作業機械の油圧回路
JP2003156006A (ja) 流体圧回路および流体圧回路制御方法