KR960007952A - Excavator flat work control device - Google Patents

Excavator flat work control device Download PDF

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Publication number
KR960007952A
KR960007952A KR1019940021620A KR19940021620A KR960007952A KR 960007952 A KR960007952 A KR 960007952A KR 1019940021620 A KR1019940021620 A KR 1019940021620A KR 19940021620 A KR19940021620 A KR 19940021620A KR 960007952 A KR960007952 A KR 960007952A
Authority
KR
South Korea
Prior art keywords
excavator
control valve
hydraulic
boom
control device
Prior art date
Application number
KR1019940021620A
Other languages
Korean (ko)
Other versions
KR970011613B1 (en
Inventor
엄희서
Original Assignee
석진철
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 석진철, 대우중공업 주식회사 filed Critical 석진철
Priority to KR1019940021620A priority Critical patent/KR970011613B1/en
Publication of KR960007952A publication Critical patent/KR960007952A/en
Application granted granted Critical
Publication of KR970011613B1 publication Critical patent/KR970011613B1/en

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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
    • E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
    • E02F9/2267—Valves or distributors
    • 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
    • E02F9/2278—Hydraulic circuits
    • E02F9/2285—Pilot-operated systems

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  • 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)
  • Operation Control Of Excavators (AREA)

Abstract

본 발명은 굴삭기의 평탄작업시 제어성을 양호토록 한 제어장치에 관한 것으로, 특히 붐실린더와 암실린더로 공급되는 유량을 제어하여 원활한 평탄작업을 할 수 있도록 한 굴삭기의 평탄작업 제어장치에 관한 것이다.The present invention relates to a control device that has good controllability during flattening of an excavator, and more particularly, to a flattening control device of an excavator that enables smooth flattening by controlling a flow rate supplied to a boom cylinder and a dark cylinder. .

본 발명의 구체적인 수단은, 붐과 암작동의 작동유를 토출해내는 유압펌프와, 이 유압펌프에서 토출된 작동유의 유량과 방향을 제어하여 붐실린더와 암실린더에 공급하여 주는 각각의 작동기제어밸브를 갖는 굴삭기의 유압장치에 있어서, 상기 유압펌프축에서 암제어밸브로 가는 평행유입라인에 붐파이럿압과 암파이럿압을 받는 유량제어밸브가 설치되어 있는 것을 특징으로 한다.Specific means of the present invention, the hydraulic pump for discharging the hydraulic fluid of the boom and the arm operation, and each actuator control valve for controlling the flow rate and direction of the hydraulic oil discharged from the hydraulic pump to supply to the boom cylinder and the arm cylinder In the hydraulic device of the excavator having, it characterized in that the flow control valve for receiving the boom pilot pressure and the ampere pressure in the parallel inlet line from the hydraulic pump shaft to the female control valve.

Description

굴삭기의 평탄작업 제어장치Excavator flat work control device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 종래의 작동기 제어유압회로,1 is a conventional actuator control hydraulic circuit,

제2도는 본 발명의 작동기 제어유압회로,2 is an actuator control hydraulic circuit of the present invention,

제3도는 본 발명의 적용되는 유량제어밸의 부분단면도.3 is a partial cross-sectional view of a flow control valve to which the present invention is applied.

Claims (2)

작동유를 토출해내는 유압펌프(14)와, 이 유압펌프(14)에서 토출된 작동유의 유량과 방향을 제어하여 붐실린더(16)와 암실린더(17)에 공급하여 주는 각각의 작동기제어밸브(10,12)를 갖는 굴삭기의 유압장치에 있어서, 상기 유압펌프(14)측에서 암제어밸브(12)로 가는 평행유입라인에 붐파이럿압 PB와 암파이럿압 PA를 받는 유량제어밸브(20)를 설치한 것을 특징으로 하는 굴삭기의 평탄작업 제어장치.Hydraulic actuator 14 for discharging the hydraulic oil, and each actuator control valve for controlling the flow rate and direction of the hydraulic oil discharged from the hydraulic pump 14 to supply to the boom cylinder 16 and the dark cylinder 17 ( In the hydraulic device of an excavator having a 10, 12, a flow control valve which receives a boom pilot pressure P B and an ampere pilot pressure P A in a parallel inlet line from the hydraulic pump 14 to the female control valve 12 ( 20) Excavator flat work control device characterized in that the installation. 제1항에 있어서, 상기 유량제어밸브(20)는 밸브몸체(30)내부에 입출구포트(a,b)의 개구면적을 조정하고 일측면에서 붐파이럿압 PB를 받는 스풀(31)이 내장되어 있고, 이 스풀(31)의 타측면에는 탄성 스프링(32)을 갖는 포펫(33)이 암파이럿압 PA를 받아 스풀(31)을 이동시키도록 포켓커버(34)에 장착되어 있는 것을 특징으로 하는 굴삭기의 평탄작업 제어장치.According to claim 1, wherein the flow control valve 20 has a built-in spool (31) for adjusting the opening area of the inlet and outlet ports (a, b) in the valve body 30 and receiving the boom pilot pressure P B from one side On the other side of the spool 31, a poppet 33 having an elastic spring 32 is attached to the pocket cover 34 so as to move the spool 31 in response to the ampere pressure P A. Excavator flat work control device. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940021620A 1994-08-30 1994-08-30 Control device for levelling the ground in an excavator KR970011613B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940021620A KR970011613B1 (en) 1994-08-30 1994-08-30 Control device for levelling the ground in an excavator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940021620A KR970011613B1 (en) 1994-08-30 1994-08-30 Control device for levelling the ground in an excavator

Publications (2)

Publication Number Publication Date
KR960007952A true KR960007952A (en) 1996-03-22
KR970011613B1 KR970011613B1 (en) 1997-07-12

Family

ID=19391538

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940021620A KR970011613B1 (en) 1994-08-30 1994-08-30 Control device for levelling the ground in an excavator

Country Status (1)

Country Link
KR (1) KR970011613B1 (en)

Also Published As

Publication number Publication date
KR970011613B1 (en) 1997-07-12

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