JPS6253656B2 - - Google Patents

Info

Publication number
JPS6253656B2
JPS6253656B2 JP54078217A JP7821779A JPS6253656B2 JP S6253656 B2 JPS6253656 B2 JP S6253656B2 JP 54078217 A JP54078217 A JP 54078217A JP 7821779 A JP7821779 A JP 7821779A JP S6253656 B2 JPS6253656 B2 JP S6253656B2
Authority
JP
Japan
Prior art keywords
switching valve
circuit
pump
pressure oil
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
Application number
JP54078217A
Other languages
English (en)
Japanese (ja)
Other versions
JPS563722A (en
Inventor
Toichi Hirata
Toshimichi Ikeda
Seiji Tamura
Kuniaki Yoshida
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 JP7821779A priority Critical patent/JPS563722A/ja
Publication of JPS563722A publication Critical patent/JPS563722A/ja
Publication of JPS6253656B2 publication Critical patent/JPS6253656B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)
JP7821779A 1979-06-22 1979-06-22 Hydraulic circuit of hydraulic shovel Granted JPS563722A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7821779A JPS563722A (en) 1979-06-22 1979-06-22 Hydraulic circuit of hydraulic shovel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7821779A JPS563722A (en) 1979-06-22 1979-06-22 Hydraulic circuit of hydraulic shovel

Publications (2)

Publication Number Publication Date
JPS563722A JPS563722A (en) 1981-01-16
JPS6253656B2 true JPS6253656B2 (enrdf_load_html_response) 1987-11-11

Family

ID=13655871

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7821779A Granted JPS563722A (en) 1979-06-22 1979-06-22 Hydraulic circuit of hydraulic shovel

Country Status (1)

Country Link
JP (1) JPS563722A (enrdf_load_html_response)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6050262U (ja) * 1983-09-13 1985-04-09 イワフジ工業株式会社 自走掘削機の油圧回路

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53157286U (enrdf_load_html_response) * 1977-05-17 1978-12-09

Also Published As

Publication number Publication date
JPS563722A (en) 1981-01-16

Similar Documents

Publication Publication Date Title
JPH0143097B2 (enrdf_load_html_response)
JPH0216416B2 (enrdf_load_html_response)
JPS61142235A (ja) 油圧ショベル等の建設機械の油圧回路
JPS6253656B2 (enrdf_load_html_response)
JPH07238575A (ja) 走行用油圧装置
JP2635206B2 (ja) 掘削作業車の油圧回路構造
JPH0374292B2 (enrdf_load_html_response)
JPS6238499B2 (enrdf_load_html_response)
JPS5935668Y2 (ja) 油圧ショベルの油圧回路
JPH0143098B2 (enrdf_load_html_response)
JPH116174A (ja) 建設車両のアクチュエータ作動回路
JPH11139276A (ja) 作業車両の駐車ブレーキ制御装置
JP2760702B2 (ja) 作業車の油圧回路構造
KR100988443B1 (ko) 굴삭기의 주행 및 프론트작업의 복합동작용 유압제어장치
JPS6340531Y2 (enrdf_load_html_response)
JPH0649644Y2 (ja) クローラ式油圧ショベルの油圧回路
JPH0411690B2 (enrdf_load_html_response)
JP2624268B2 (ja) 建設機械の油圧駆動装置
JPH0128177B2 (enrdf_load_html_response)
JPS5830855Y2 (ja) 油圧ショベルの油圧回路
JPH0427338B2 (enrdf_load_html_response)
JPH0128176B2 (enrdf_load_html_response)
JP2871886B2 (ja) 油圧ショベルの油圧回路
JPS60133128A (ja) 油圧掘削機の油圧回路
JPH0133612B2 (enrdf_load_html_response)