JPH0235164B2 - - Google Patents

Info

Publication number
JPH0235164B2
JPH0235164B2 JP57163119A JP16311982A JPH0235164B2 JP H0235164 B2 JPH0235164 B2 JP H0235164B2 JP 57163119 A JP57163119 A JP 57163119A JP 16311982 A JP16311982 A JP 16311982A JP H0235164 B2 JPH0235164 B2 JP H0235164B2
Authority
JP
Japan
Prior art keywords
center bypass
hydraulic
valve
warming
control 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 - Lifetime
Application number
JP57163119A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5954805A (ja
Inventor
Yukio Aoyanagi
Shuichi Ichama
Masaki Kanehara
Keiichiro Uno
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 JP57163119A priority Critical patent/JPS5954805A/ja
Publication of JPS5954805A publication Critical patent/JPS5954805A/ja
Publication of JPH0235164B2 publication Critical patent/JPH0235164B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
JP57163119A 1982-09-21 1982-09-21 ウオ−ミングアツプ機能を備えた油圧駆動装置 Granted JPS5954805A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57163119A JPS5954805A (ja) 1982-09-21 1982-09-21 ウオ−ミングアツプ機能を備えた油圧駆動装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57163119A JPS5954805A (ja) 1982-09-21 1982-09-21 ウオ−ミングアツプ機能を備えた油圧駆動装置

Publications (2)

Publication Number Publication Date
JPS5954805A JPS5954805A (ja) 1984-03-29
JPH0235164B2 true JPH0235164B2 (enrdf_load_stackoverflow) 1990-08-08

Family

ID=15767532

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57163119A Granted JPS5954805A (ja) 1982-09-21 1982-09-21 ウオ−ミングアツプ機能を備えた油圧駆動装置

Country Status (1)

Country Link
JP (1) JPS5954805A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8910473B2 (en) 2010-12-21 2014-12-16 Komatsu Ltd. Pipe layer and warm-up method for pipe layer

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0735128Y2 (ja) * 1989-08-31 1995-08-09 住友建機株式会社 油圧作業機の暖機回路
US7827785B2 (en) * 2007-12-03 2010-11-09 Deere & Company Hydraulic system with warm up circuit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51664A (en) * 1974-06-21 1976-01-06 Matsushita Electric Works Ltd Purintobanno kairokoseitai
JPS59714B2 (ja) * 1976-12-22 1984-01-07 日立建機株式会社 可変容量形油圧ポンプの吐出量制御回路

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8910473B2 (en) 2010-12-21 2014-12-16 Komatsu Ltd. Pipe layer and warm-up method for pipe layer

Also Published As

Publication number Publication date
JPS5954805A (ja) 1984-03-29

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