KR870006864U - 유압식 굴삭기의 붐 (Boom) 우선 작동회로 - Google Patents

유압식 굴삭기의 붐 (Boom) 우선 작동회로

Info

Publication number
KR870006864U
KR870006864U KR2019850013085U KR850013085U KR870006864U KR 870006864 U KR870006864 U KR 870006864U KR 2019850013085 U KR2019850013085 U KR 2019850013085U KR 850013085 U KR850013085 U KR 850013085U KR 870006864 U KR870006864 U KR 870006864U
Authority
KR
South Korea
Prior art keywords
boom
operation circuit
hydraulic excavator
excavator
hydraulic
Prior art date
Application number
KR2019850013085U
Other languages
English (en)
Other versions
KR890008822Y1 (ko
Inventor
최훈
김영훈
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 KR2019850013085U priority Critical patent/KR890008822Y1/ko
Publication of KR870006864U publication Critical patent/KR870006864U/ko
Application granted granted Critical
Publication of KR890008822Y1 publication Critical patent/KR890008822Y1/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
    • E02F9/2278—Hydraulic circuits
    • E02F9/2285—Pilot-operated systems
    • 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
    • E02F3/425—Drive systems for dipper-arms, backhoes or the like
    • 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
    • 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
    • E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
    • E02F9/2267—Valves or distributors

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Operation Control Of Excavators (AREA)
KR2019850013085U 1985-10-08 1985-10-08 유압식 굴삭기의 붐 (Boom) 우선 작동회로 KR890008822Y1 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019850013085U KR890008822Y1 (ko) 1985-10-08 1985-10-08 유압식 굴삭기의 붐 (Boom) 우선 작동회로

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019850013085U KR890008822Y1 (ko) 1985-10-08 1985-10-08 유압식 굴삭기의 붐 (Boom) 우선 작동회로

Publications (2)

Publication Number Publication Date
KR870006864U true KR870006864U (ko) 1987-05-09
KR890008822Y1 KR890008822Y1 (ko) 1989-12-05

Family

ID=19245760

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019850013085U KR890008822Y1 (ko) 1985-10-08 1985-10-08 유압식 굴삭기의 붐 (Boom) 우선 작동회로

Country Status (1)

Country Link
KR (1) KR890008822Y1 (ko)

Also Published As

Publication number Publication date
KR890008822Y1 (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