KR940000184Y1 - Oil-pressure control circuit of excavator - Google Patents

Oil-pressure control circuit of excavator Download PDF

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Publication number
KR940000184Y1
KR940000184Y1 KR2019900009499U KR900009499U KR940000184Y1 KR 940000184 Y1 KR940000184 Y1 KR 940000184Y1 KR 2019900009499 U KR2019900009499 U KR 2019900009499U KR 900009499 U KR900009499 U KR 900009499U KR 940000184 Y1 KR940000184 Y1 KR 940000184Y1
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KR
South Korea
Prior art keywords
pressure
spool
excavator
passage
oil
Prior art date
Application number
KR2019900009499U
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Korean (ko)
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KR920000807U (en
Inventor
양진섭
Original Assignee
현대중장비산업 주식회사
김형벽
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Priority to KR2019900009499U priority Critical patent/KR940000184Y1/en
Publication of KR920000807U publication Critical patent/KR920000807U/en
Application granted granted Critical
Publication of KR940000184Y1 publication Critical patent/KR940000184Y1/en

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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F9/00Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20Drives; Control devices
    • E02F9/22Hydraulic or pneumatic drives
    • E02F9/2203Arrangements for controlling the attitude of actuators, e.g. speed, floating function
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F9/00Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20Drives; Control devices
    • E02F9/22Hydraulic or pneumatic drives
    • E02F9/2264Arrangements or adaptations of elements for hydraulic drives
    • E02F9/2267Valves or distributors
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F9/00Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20Drives; Control devices
    • E02F9/22Hydraulic or pneumatic drives
    • E02F9/2278Hydraulic circuits
    • E02F9/2285Pilot-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)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)

Abstract

내용 없음.No content.

Description

굴삭기 자동연료 절감 장치의 유압회로Hydraulic circuit of excavator automatic fuel saving device

제1도는 본 고안의 유압회로도.1 is a hydraulic circuit diagram of the present invention.

본 고안은 유압식 굴삭기의 작업도중 잠시동안 정지하였을 경우 자동적으로 엔진의 속도를 낮추어 연료를 절감할 수 있도록 한 굴삭기 자동연료 절감 장치의 유압회로에 관한 것이다.The present invention relates to the hydraulic circuit of the automatic fuel saving device of the excavator to save fuel by automatically lowering the engine speed when the hydraulic excavator is stopped for a while.

본 고안 유압식 굴삭기에 있어서 작업중 정지시키거나, 정지하였다가 재 작업을 할때 자동적으로 엔진의 속도를 낮추어 주고 속도를 올라가게 하여 연료를 절감하게 한 것이다.In the designed hydraulic excavator, when the engine is stopped or stopped and reworked, the engine speed is lowered and the engine speed is increased to save fuel.

이하 고안의 요지를 첨부도면에 의하여 상세히 설명하면 다음과 같다.Hereinafter, the gist of the present invention will be described in detail with reference to the accompanying drawings.

유압식 굴삭기의 콘트롤밸브(1)의 통로(2)를 버켓용스풀(3), 붐용스풀(4), 암용스풀(5), 선회용스풀(6)과 연결하고, 압력 기어펌프(7)에서의 토출압력은 오리피스(8)를 통해 통로(2)와 연결되어 압력 스위치(9) 의해 통로(10)의 압력을 감지할 수 있도록 설치하고 주행파이롯트 리모콘밸브(11)와 셔틀밸브(12), (13), (14)를 설치하여 압력스위치(15)에 의해 셔틀밸브(14)의 압력을 감지할 수 있도록 한 구조이다.The passage (2) of the control valve (1) of the hydraulic excavator is connected to the bucket spool (3), the boom spool (4), the arm spool (5), the swing spool (6), and the pressure gear pump (7) The discharge pressure of the discharge is connected to the passage (2) through the orifice (8) is installed so as to detect the pressure of the passage (10) by the pressure switch (9) and the pilot pilot remote control valve 11 and shuttle valve 12, (13) and (14) are installed so that the pressure of the shuttle valve 14 can be detected by the pressure switch 15.

미설명부호(16), (17)은 주행스풀이고, (18)은 솔레노이드밸브, (19)는 실린더, (20)은 콘트롤러, (21)은 스프링, (22)는 스로틀레바, (23), (24), (25), (26), (23'), (24'), (25'), (26')는 2차 압력이다.Unexplained symbols 16 and 17 are running spools, 18 are solenoid valves, 19 are cylinders, 20 are controllers, 21 are springs, 22 are throttle levers, 23 , (24), (25), (26), (23 '), (24'), (25 ') and (26') are secondary pressures.

이와같이 된 본 고안은 유압식 굴삭기가 작업도중 정지하였을 경우 제1도와 같이 주행스풀(16), (17) 및 버켓용스풀(3), 붐용스풀(4), 암용스풀(5), 선회용스풀(6)은 중립위치에 있게 되며 통로(10) 및 셔틀밸브(14)에 감지된 압력은 탱크압력과 같이 되며 이때의 압력을 감지하여 압력스위치(9), (15)에 의해 콘트롤러(20)에 신호를 전달하고 콘트롤러(20)는 솔레노이드밸브(18)에 전원을 차단하여 실린더(19)는 스프링(21)에 의해 스로틀레바(22)를 당기게 되고 엔진은 자동으로 속도가 떨어지게 된다.When the hydraulic excavator is stopped during operation, the present invention has been made, as shown in Fig. 1, the driving spools 16, 17 and bucket spools 3, boom spools 4, arm spools 5, and swing spools. 6) is in a neutral position and the pressure sensed by the passage 10 and the shuttle valve 14 is equal to the tank pressure and senses the pressure at this time to the controller 20 by the pressure switches 9 and 15. Transmitting a signal and the controller 20 cuts off the power supply to the solenoid valve 18, the cylinder 19 is pulled by the throttle lever 22 by the spring 21 and the engine is automatically dropped speed.

또한 작업을 정지하였다가 다시 시작하게 되면 주행스풀(16), (17) 또는 버켓용스풀(3), 붐용스풀(4), 암용스풀(5), 선회용스풀(6) 중 어느 한 스풀이 작동하게 되면 통로(2)는 탱크라인과 분리되어 통로(10)의 압력은 상승하게 되어 이 압력은 압력스위치(9)에 전달 콘트롤러(20)에 신호를 전달하여 콘트롤러(20)는 솔레노이드밸브(18)에 전원을 공급 솔레노이드 밸브(18)는 절환이 되고 실린더(19)는 엔진 스로틀레바(22)를 밀게되어 엔진은 다시 속도가 올라가게 되며, 주행을 할 경우 2차 압력라인 (23), (24), (25), (26)은 (23'), (24'), (25'), (26')와 연결되어 있다.In addition, when the operation is stopped and restarted, any one of the driving spool (16), (17) or bucket spool (3), boom spool (4), arm spool (5) and swing spool (6) When operated, the passage 2 is separated from the tank line so that the pressure in the passage 10 rises, and this pressure transmits a signal to the transfer controller 20 through the pressure switch 9 so that the controller 20 has a solenoid valve ( Power supply to the solenoid valve 18 is switched 18 and the cylinder 19 is pushed the engine throttle lever 22 so that the engine is increased speed again, the second pressure line 23, (24), (25), and (26) are connected to (23 '), (24'), (25 ') and (26').

주행스풀(16), (17)은 절환됨과 동시에 발생되는 2차 압력은 셔틀밸브(12), (13), (14)를 통해 압력스위치(15)에 전달된다.The driving spools 16 and 17 are switched and the secondary pressure generated at the same time is transmitted to the pressure switch 15 through the shuttle valves 12, 13 and 14.

위와같은 방법으로 압력스위치(15)에서 신호를 받는 콘트롤러(20)는 솔레노이드 밸브(18)를 작동하고 다시 실린더(19)가 작동하게 되어 엔진은 다시 속도가 올라가게 되는 것이다.In the same manner as above, the controller 20 receiving the signal from the pressure switch 15 operates the solenoid valve 18 and the cylinder 19 is operated again, thereby increasing the engine speed again.

본 고안은 유압식 굴삭기를 조작함에 있어서 작업중 잠시 정지하거나, 정지하였다가 다시 시작할 경우 기계의 급동작, 급정지로 인한 손상을 최소화시키고 자동 연료절감 장치의 유압회로로서 완충하여 작동을 부드럽게 하며 장비의 고장을 최소화하고 연료를 절감할 수 있게한 효과가 있는 것이다.The present invention minimizes the damage caused by sudden operation or sudden stoppage of the machine when operating a hydraulic excavator, or stops and restarts it. It has the effect of minimizing and saving fuel.

Claims (1)

유압식굴삭기의 콘트롤밸브(1)의 통로(2)를 버켓용스풀(3), 붐용스풀(4), 암용스풀(5), 선회용스풀(6)과 연결하고, 압력 기어펌프(7)에서의 토출압력은 오리피스(8)를 통해 통로(2)와 연결되어 압력 스위치(9)의 해통로(10)의 압력을 감지할 수 있도록 설치하고 주행파이롯트 리모콘밸브(11)와 셔틀밸브(12), (13), (14)를 설치하여 압력스위치(15)에 의해 셔틀밸브(14)의 압력을 감지할 수 있도록 한 것을 특징으로 한 굴삭기 자동연료 절감장치의 유압회로.The passage (2) of the control valve (1) of the hydraulic excavator is connected to the bucket spool (3), the boom spool (4), the arm spool (5), the swing spool (6), and the pressure gear pump (7) The discharge pressure is connected to the passage (2) through the orifice (8) is installed so that the pressure of the passage 10 of the pressure switch (9) can be installed and the traveling pilot remote control valve 11 and shuttle valve 12 , (13), (14) of the hydraulic circuit of the excavator automatic fuel saving device, characterized in that the pressure switch (15) to detect the pressure of the shuttle valve (14).
KR2019900009499U 1990-06-30 1990-06-30 Oil-pressure control circuit of excavator KR940000184Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019900009499U KR940000184Y1 (en) 1990-06-30 1990-06-30 Oil-pressure control circuit of excavator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019900009499U KR940000184Y1 (en) 1990-06-30 1990-06-30 Oil-pressure control circuit of excavator

Publications (2)

Publication Number Publication Date
KR920000807U KR920000807U (en) 1992-01-27
KR940000184Y1 true KR940000184Y1 (en) 1994-01-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019900009499U KR940000184Y1 (en) 1990-06-30 1990-06-30 Oil-pressure control circuit of excavator

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KR920000807U (en) 1992-01-27

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