JPH0251012B2 - - Google Patents

Info

Publication number
JPH0251012B2
JPH0251012B2 JP13260181A JP13260181A JPH0251012B2 JP H0251012 B2 JPH0251012 B2 JP H0251012B2 JP 13260181 A JP13260181 A JP 13260181A JP 13260181 A JP13260181 A JP 13260181A JP H0251012 B2 JPH0251012 B2 JP H0251012B2
Authority
JP
Japan
Prior art keywords
cylinder
side oil
arm
bucket
oil chamber
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
JP13260181A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5837239A (ja
Inventor
Takashi Yagyu
Takeshi Yamaguchi
Sotaro Tanaka
Yasuo Sakaki
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 JP13260181A priority Critical patent/JPS5837239A/ja
Priority to EP82107325A priority patent/EP0072539B1/en
Priority to DE8282107325T priority patent/DE3276124D1/de
Priority to US06/407,630 priority patent/US4504185A/en
Priority to KR8203694A priority patent/KR870000507B1/ko
Publication of JPS5837239A publication Critical patent/JPS5837239A/ja
Publication of JPH0251012B2 publication Critical patent/JPH0251012B2/ja
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/20—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors controlling several interacting or sequentially-operating members
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
    • E02F3/43—Control of dipper or bucket position; Control of sequence of drive operations
    • E02F3/435—Control of dipper or bucket position; Control of sequence of drive operations for dipper-arms, backhoes or the like
    • E02F3/437—Control of dipper or bucket position; Control of sequence of drive operations for dipper-arms, backhoes or the like providing automatic sequences of movements, e.g. linear excavation, keeping dipper angle constant

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Operation Control Of Excavators (AREA)
JP13260181A 1981-08-18 1981-08-26 ロ−デイングシヨベルの油圧回路 Granted JPS5837239A (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP13260181A JPS5837239A (ja) 1981-08-26 1981-08-26 ロ−デイングシヨベルの油圧回路
EP82107325A EP0072539B1 (en) 1981-08-18 1982-08-12 Hydraulic circuit of hydraulic power shovel
DE8282107325T DE3276124D1 (en) 1981-08-18 1982-08-12 Hydraulic circuit of hydraulic power shovel
US06/407,630 US4504185A (en) 1981-08-18 1982-08-12 Hydraulic circuit of hydraulic power shovel
KR8203694A KR870000507B1 (ko) 1981-08-18 1982-08-17 유압 셔블의 유압회로

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13260181A JPS5837239A (ja) 1981-08-26 1981-08-26 ロ−デイングシヨベルの油圧回路

Publications (2)

Publication Number Publication Date
JPS5837239A JPS5837239A (ja) 1983-03-04
JPH0251012B2 true JPH0251012B2 (en]) 1990-11-06

Family

ID=15085143

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13260181A Granted JPS5837239A (ja) 1981-08-18 1981-08-26 ロ−デイングシヨベルの油圧回路

Country Status (1)

Country Link
JP (1) JPS5837239A (en])

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0621804U (ja) * 1992-04-30 1994-03-22 株式会社原田精工 拡径保持装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0351478A1 (fr) * 1988-07-19 1990-01-24 Victory Palan de levage à commande manuelle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0621804U (ja) * 1992-04-30 1994-03-22 株式会社原田精工 拡径保持装置

Also Published As

Publication number Publication date
JPS5837239A (ja) 1983-03-04

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