JPS6337216B2 - - Google Patents

Info

Publication number
JPS6337216B2
JPS6337216B2 JP55127126A JP12712680A JPS6337216B2 JP S6337216 B2 JPS6337216 B2 JP S6337216B2 JP 55127126 A JP55127126 A JP 55127126A JP 12712680 A JP12712680 A JP 12712680A JP S6337216 B2 JPS6337216 B2 JP S6337216B2
Authority
JP
Japan
Prior art keywords
hydraulic
pump
discharge capacity
variable
pumps
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
JP55127126A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5754635A (en
Inventor
Hiroshi Watanabe
Eiki Izumi
Yukio Aoyanagi
Kazuo Pponma
Yoshio Nakajima
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 JP55127126A priority Critical patent/JPS5754635A/ja
Publication of JPS5754635A publication Critical patent/JPS5754635A/ja
Publication of JPS6337216B2 publication Critical patent/JPS6337216B2/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
    • E02F9/2296—Systems with a variable displacement pump
    • 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

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)
JP55127126A 1980-09-16 1980-09-16 Hydraulic circuit for civil engineering and construction equipment Granted JPS5754635A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55127126A JPS5754635A (en) 1980-09-16 1980-09-16 Hydraulic circuit for civil engineering and construction equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55127126A JPS5754635A (en) 1980-09-16 1980-09-16 Hydraulic circuit for civil engineering and construction equipment

Publications (2)

Publication Number Publication Date
JPS5754635A JPS5754635A (en) 1982-04-01
JPS6337216B2 true JPS6337216B2 (enrdf_load_stackoverflow) 1988-07-25

Family

ID=14952246

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55127126A Granted JPS5754635A (en) 1980-09-16 1980-09-16 Hydraulic circuit for civil engineering and construction equipment

Country Status (1)

Country Link
JP (1) JPS5754635A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021172927A1 (ko) * 2020-02-27 2021-09-02 두산인프라코어 주식회사 건설 기계

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6231705A (ja) * 1985-08-02 1987-02-10 Komatsu Ltd 液圧式建設機械の液圧回路装置
JPS62165003A (ja) * 1986-01-10 1987-07-21 Tech Res Assoc Openair Coal Min Mach 油圧シヨベル等の油圧回路における作動油配分装置
JPS62225633A (ja) * 1986-03-26 1987-10-03 Tech Res Assoc Openair Coal Min Mach 油圧シヨベル等の油圧回路における作動油配分装置
CN101929489B (zh) * 2009-06-26 2013-05-29 安钛医疗设备股份有限公司 手术台双向油压系统
JP5797061B2 (ja) 2011-08-24 2015-10-21 株式会社小松製作所 油圧ショベル
US9057389B2 (en) 2011-09-30 2015-06-16 Caterpillar Inc. Meterless hydraulic system having multi-actuator circuit
US20130098011A1 (en) * 2011-10-21 2013-04-25 Michael L. Knussman Hydraulic system having multiple closed-loop circuits
US20130098458A1 (en) * 2011-10-21 2013-04-25 Michael L. Knussman Hydraulic system having multiple closed-loop circuits
US20130098463A1 (en) * 2011-10-21 2013-04-25 Jeffrey L. Kuehn Meterless hydraulic system having sharing and combining functionality
US20130098013A1 (en) * 2011-10-21 2013-04-25 Brad A. Edler Closed-loop system having multi-circuit flow sharing
JP5961580B2 (ja) * 2013-04-11 2016-08-02 日立建機株式会社 作業機械の駆動装置
JP5973979B2 (ja) * 2013-11-21 2016-08-23 日立建機株式会社 作業機械の駆動装置
JP5974029B2 (ja) * 2014-03-19 2016-08-23 日立建機株式会社 作業機械の駆動装置
JP6518318B2 (ja) * 2015-04-03 2019-05-22 日立建機株式会社 作業機械の油圧制御装置
JP6474702B2 (ja) * 2015-09-07 2019-02-27 日立建機株式会社 作業機械の駆動装置
CN111501871B (zh) * 2020-05-29 2025-05-23 三一重机有限公司 挖掘机液压系统及挖掘机
JP2024002332A (ja) * 2022-06-23 2024-01-11 川崎重工業株式会社 液圧駆動装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5473402A (en) * 1977-11-22 1979-06-12 Hitachi Construction Machinery Hydraulic circuit for hydraulic shovel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021172927A1 (ko) * 2020-02-27 2021-09-02 두산인프라코어 주식회사 건설 기계
US12054917B2 (en) 2020-02-27 2024-08-06 Hd Hyundai Infracore Co., Ltd. Construction machine

Also Published As

Publication number Publication date
JPS5754635A (en) 1982-04-01

Similar Documents

Publication Publication Date Title
JPS6337216B2 (enrdf_load_stackoverflow)
US5267440A (en) Hydraulic control system for construction machine
US4369625A (en) Drive system for construction machinery and method of controlling hydraulic circuit means thereof
US4768339A (en) Hydraulic drive system
JPS6342122B2 (enrdf_load_stackoverflow)
JPS6319724B2 (enrdf_load_stackoverflow)
EP3118465A1 (en) Shovel
JPS6225882B2 (enrdf_load_stackoverflow)
JP2020139574A (ja) 建設機械
JPH10231805A (ja) 油圧パイロット回路
GB2045360A (en) Drive system for construction machinery
JP4724945B2 (ja) 油圧回路
JP3205910B2 (ja) 単一可変容量ポンプによる複数アクチュエータの作動制御装置
JPH04258505A (ja) 油圧建設機械の駆動制御装置
JPS5939601B2 (ja) 片ロッドシリンダの駆動油圧回路
JP3047078B2 (ja) ロードセンシングシステムにおけるエンジンの自動調速装置
JP2002317471A (ja) 油圧ショベルの油圧制御回路
JP2884899B2 (ja) 建設機械の走行速度制御方法
JPH02212606A (ja) 建設機械の油圧流量制御装置
JPH03267534A (ja) 建設機械の原動機制御装置
JP2866177B2 (ja) 作業車両の油圧駆動装置
WO2021039926A1 (ja) 建設機械
JP3182642B2 (ja) 走行速度切換制御装置
JPH11117873A (ja) 油圧ポンプのカットオフ装置
JPH0143163B2 (enrdf_load_stackoverflow)