KR870006865U - 유압구동식 굴삭기의 펌프 자동 제어회로 - Google Patents

유압구동식 굴삭기의 펌프 자동 제어회로

Info

Publication number
KR870006865U
KR870006865U KR2019850013086U KR850013086U KR870006865U KR 870006865 U KR870006865 U KR 870006865U KR 2019850013086 U KR2019850013086 U KR 2019850013086U KR 850013086 U KR850013086 U KR 850013086U KR 870006865 U KR870006865 U KR 870006865U
Authority
KR
South Korea
Prior art keywords
control circuit
pump control
automatic pump
hydraulic driven
driven excavator
Prior art date
Application number
KR2019850013086U
Other languages
English (en)
Other versions
KR890008823Y1 (ko
Inventor
조수용
박종욱
Original Assignee
대우중공업 주식회사
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 대우중공업 주식회사 filed Critical 대우중공업 주식회사
Priority to KR2019850013086U priority Critical patent/KR890008823Y1/ko
Publication of KR870006865U publication Critical patent/KR870006865U/ko
Application granted granted Critical
Publication of KR890008823Y1 publication Critical patent/KR890008823Y1/ko

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
    • E02F9/2221—Control of flow rate; Load sensing arrangements
    • E02F9/2232—Control of flow rate; Load sensing arrangements using one or more variable displacement 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
    • E02F9/2278—Hydraulic circuits
    • E02F9/2285—Pilot-operated systems
    • 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

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)
  • Reciprocating Pumps (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
KR2019850013086U 1985-10-08 1985-10-08 유압구동식 굴삭기의 펌프 자동 제어회로 KR890008823Y1 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019850013086U KR890008823Y1 (ko) 1985-10-08 1985-10-08 유압구동식 굴삭기의 펌프 자동 제어회로

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019850013086U KR890008823Y1 (ko) 1985-10-08 1985-10-08 유압구동식 굴삭기의 펌프 자동 제어회로

Publications (2)

Publication Number Publication Date
KR870006865U true KR870006865U (ko) 1987-05-09
KR890008823Y1 KR890008823Y1 (ko) 1989-12-05

Family

ID=19245761

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019850013086U KR890008823Y1 (ko) 1985-10-08 1985-10-08 유압구동식 굴삭기의 펌프 자동 제어회로

Country Status (1)

Country Link
KR (1) KR890008823Y1 (ko)

Also Published As

Publication number Publication date
KR890008823Y1 (ko) 1989-12-05

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Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
REGI Registration of establishment
LAPS Lapse due to unpaid annual fee