JPH0424491B2 - - Google Patents

Info

Publication number
JPH0424491B2
JPH0424491B2 JP56173688A JP17368881A JPH0424491B2 JP H0424491 B2 JPH0424491 B2 JP H0424491B2 JP 56173688 A JP56173688 A JP 56173688A JP 17368881 A JP17368881 A JP 17368881A JP H0424491 B2 JPH0424491 B2 JP H0424491B2
Authority
JP
Japan
Prior art keywords
bucket
directional
valve
switching valve
arm
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
JP56173688A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5876619A (ja
Inventor
Takeshi Furuichi
Kenzo Yanagibashi
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.)
Hitachi Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery Co 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 Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Priority to JP17368881A priority Critical patent/JPS5876619A/ja
Publication of JPS5876619A publication Critical patent/JPS5876619A/ja
Publication of JPH0424491B2 publication Critical patent/JPH0424491B2/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)
JP17368881A 1981-10-31 1981-10-31 油圧シヨベルの油圧回路 Granted JPS5876619A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17368881A JPS5876619A (ja) 1981-10-31 1981-10-31 油圧シヨベルの油圧回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17368881A JPS5876619A (ja) 1981-10-31 1981-10-31 油圧シヨベルの油圧回路

Publications (2)

Publication Number Publication Date
JPS5876619A JPS5876619A (ja) 1983-05-09
JPH0424491B2 true JPH0424491B2 (US06633600-20031014-M00021.png) 1992-04-27

Family

ID=15965257

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17368881A Granted JPS5876619A (ja) 1981-10-31 1981-10-31 油圧シヨベルの油圧回路

Country Status (1)

Country Link
JP (1) JPS5876619A (US06633600-20031014-M00021.png)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10766564B2 (en) 2015-10-26 2020-09-08 Angelo Morelli Protection device for disc brakes

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0492030A (ja) * 1990-08-03 1992-03-25 Kubota Corp バックホウの油圧回路

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5370284A (en) * 1976-12-03 1978-06-22 Caterpillar Tractor Co Hydraulic device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5828039Y2 (ja) * 1975-03-13 1983-06-18 株式会社クボタ サギヨウシヤノユアツカイロ

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5370284A (en) * 1976-12-03 1978-06-22 Caterpillar Tractor Co Hydraulic device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10766564B2 (en) 2015-10-26 2020-09-08 Angelo Morelli Protection device for disc brakes

Also Published As

Publication number Publication date
JPS5876619A (ja) 1983-05-09

Similar Documents

Publication Publication Date Title
US5862831A (en) Variable-regeneration directional control valve for construction vehicles
JPH1096402A (ja) 油圧回路
GB2269425A (en) Hydraulic circuit
JP2002339904A (ja) 建設機械の油圧回路
JPH0424491B2 (US06633600-20031014-M00021.png)
JP2799045B2 (ja) クレーン用油圧回路
JPH08302752A (ja) 油圧ショベルのブーム上げ優先油圧回路
JP2635206B2 (ja) 掘削作業車の油圧回路構造
KR200257578Y1 (ko) 굴삭기의붐작동용유량제어장치
JPS6126431Y2 (US06633600-20031014-M00021.png)
JP3119293B2 (ja) 作業機械の油圧回路
JP2871112B2 (ja) 建設機械の旋回回路
KR890007173Y1 (ko) 시이퀸스 밸브가 설치된 원격조작 방식의 굴삭기
JP3498751B2 (ja) 側辺掘削用油圧ショベルの制御装置
JP3250417B2 (ja) 油圧ショベルの油圧回路
JP2002004339A (ja) 油圧ショベルの制御回路
JP3339646B2 (ja) 側辺掘削用油圧ショベルの制御装置
JPS6238499B2 (US06633600-20031014-M00021.png)
JPH0217722B2 (US06633600-20031014-M00021.png)
JPH0510041Y2 (US06633600-20031014-M00021.png)
JPS634127A (ja) 油圧シヨベルの油圧回路
JPH0352273Y2 (US06633600-20031014-M00021.png)
JPH09165796A (ja) 作業機械の油圧回路
JPS6340531Y2 (US06633600-20031014-M00021.png)
JP2625588B2 (ja) 油圧ショベルの油圧回路