KR950032925A - Automatic brake control device of excavator - Google Patents

Automatic brake control device of excavator Download PDF

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Publication number
KR950032925A
KR950032925A KR1019940012225A KR19940012225A KR950032925A KR 950032925 A KR950032925 A KR 950032925A KR 1019940012225 A KR1019940012225 A KR 1019940012225A KR 19940012225 A KR19940012225 A KR 19940012225A KR 950032925 A KR950032925 A KR 950032925A
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KR
South Korea
Prior art keywords
hydraulic oil
solenoid valve
brake
hydraulic
mode
Prior art date
Application number
KR1019940012225A
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Korean (ko)
Inventor
박성복
Original Assignee
김무
삼성중공업 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 김무, 삼성중공업 주식회사 filed Critical 김무
Priority to KR1019940012225A priority Critical patent/KR950032925A/en
Publication of KR950032925A publication Critical patent/KR950032925A/en

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  • Operation Control Of Excavators (AREA)

Abstract

유압에 의해 작동하는 주차브레이크와 서어비스브레이크를 가지는 타이어식 굴삭기의 브레이크제어장치에 있어서, 상기 주차브레이크를 작동하는 유압실린더로의 작동유공급을 통제하는 제1솔레노이드밸브와, 상기 서어비스브레이크를 작동하는 유압실린더로의 작동유공급을 통제하는 제2솔레노이드밸브와, 작업모드와 주행모드를 선택할 수 있는 모드선택스위치와, 상기 모드선택스위치의 작업모드단자와 상기 제2솔레노이드밸브의 제어단자사이에 연결되며 주행페달에 의해 제어되는 작동유의 공급에 따라 개폐되는 제1압력스위치와, 상기 모드선택스위치의 작업모드단자와 상기 제1솔레노이드밸브의 제어단자사이에 연결되며 상기 주행페달에 의해 제어되는 작동유의 공급에 따라 개폐되는 제2압력스위치와, 상기 제1솔레노이드밸브를 통과한 작동유에 의한 파일럿압력에 의해 상기 서어비스브레이크용의 유압식린더내에 있는 작동유를 오일탱크로 귀환시키는 책 밸브를 구비함을 특징으로 하는 브레이크제어장치.A brake control apparatus for a tire type excavator having a parking brake operated by hydraulic pressure and a service brake, comprising: a first solenoid valve controlling a supply of hydraulic oil to a hydraulic cylinder operating the parking brake; It is connected between the second solenoid valve controlling the supply of hydraulic oil to the cylinder, a mode selection switch for selecting a working mode and a driving mode, and a working mode terminal of the mode selection switch and a control terminal of the second solenoid valve. A first pressure switch that is opened and closed according to the supply of hydraulic oil controlled by a pedal, and is connected between the operation mode terminal of the mode selection switch and the control terminal of the first solenoid valve, and supplies the hydraulic oil controlled by the traveling pedal. Passing through the second pressure switch and the first solenoid valve And a valve for returning the hydraulic oil in the hydraulic cylinder for the service brake to the oil tank by the pilot pressure caused by the hydraulic oil.

Description

굴삭기의 자동브레이크 제어장치Automatic brake control device of excavator

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

제1도는 종래의 브레이크 제어장치가 작업브레이크 해제 상태에 놓인 경우룰 도시하는 유합회로도, 제2도는 종래의 브레이크제어장치가 작업브레이크잠금상태에 놓인 경우를 도시하는 유압회로도, 제3도는 본 발명에 따른 브레이크 제어장치의 구성을 도시하는 유압회로도로서, 주행 모드선택시의 상태를 보여준다. 제4도는 제3도에서 작업 모드선택시의 상태를 도시하는 유압회로도, 제5도는 제3도에서 작업 모드선택시에 주행할 때의 상태를 도시하는 유압회로도.1 is a coalescing circuit diagram showing the case where the conventional brake control device is in the working brake release state, and FIG. 2 is a hydraulic circuit diagram showing the case where the conventional brake control device is in the working brake locking state, and FIG. A hydraulic circuit diagram showing the configuration of the brake control apparatus according to the present invention shows a state at the time of driving mode selection. FIG. 4 is a hydraulic circuit diagram showing a state at the time of selecting a work mode in FIG. 3, and FIG. 5 is a hydraulic circuit diagram showing a state when running at the time of selecting a work mode in FIG.

Claims (2)

유압에 의해 작동하는 주차브레이크와 서어비스브레이크를 가지는 타이어식 굴삭기의 브레이크제어장치에 있어서, 상기 주차브레이크를 작동하는 유압실린더로의 작동유공급을 통제하는 제1솔레노이드밸브와, 상기 서어비스브레이크를 작동하는 유압실린더로의 작동유공급을 통제하는 제2솔레노이드밸브와, 작업모드와 주행모드를 선택할 수 있는 모드선택스위치와, 상기 모드선택스위치의 작업모드단자와 상기 제2솔레노이드밸브의 제어단자사이에 연결되며 주행페달에 의해 제어되는 작동유의 공급에 따라 개폐되는 제1압력스위치와, 사이 모드선택스위치의 작업모드단자와 상기 제1솔레노이드밸브의 제어단자사이에 연결되며 상기 주행페달에 의해 제어되는 작동유의 공급에 따라 개폐되는 제2압력스위치와, 상기 제1솔레노이드밸브를 통과한 작동유에 의한 파일럿압력에 의해 상기 서어비스브레이크용의 유압실린더내에 있는 작동유를 오일탱크로 귀환시키는 책 밸브를 구비함을 특징으로 하는 브레이크제어장치A brake control apparatus for a tire type excavator having a parking brake operated by hydraulic pressure and a service brake, comprising: a first solenoid valve controlling a supply of hydraulic oil to a hydraulic cylinder operating the parking brake; It is connected between the second solenoid valve controlling the supply of hydraulic oil to the cylinder, a mode selection switch for selecting a working mode and a driving mode, and a working mode terminal of the mode selection switch and a control terminal of the second solenoid valve. A first pressure switch, which is opened and closed according to the supply of the hydraulic oil controlled by the pedal, is connected between the operation mode terminal of the mode selection switch and the control terminal of the first solenoid valve and is supplied to the hydraulic oil controlled by the traveling pedal. Passing through the second pressure switch and the first solenoid valve And a brake valve for returning the hydraulic oil in the hydraulic cylinder for the service brake to the oil tank by the pilot pressure caused by the hydraulic oil. 제1항에 있어서, 상기 책밸브에 작동유를 가압하여 상기 서어비스브레이크를 작동시키는 서어비스브레이크를 더 포함함을 특징으로 하는 브레이크제어장치.The brake control apparatus according to claim 1, further comprising a service brake for operating the service brake by pressurizing hydraulic oil to the book valve. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940012225A 1994-05-31 1994-05-31 Automatic brake control device of excavator KR950032925A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940012225A KR950032925A (en) 1994-05-31 1994-05-31 Automatic brake control device of excavator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940012225A KR950032925A (en) 1994-05-31 1994-05-31 Automatic brake control device of excavator

Publications (1)

Publication Number Publication Date
KR950032925A true KR950032925A (en) 1995-12-22

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Application Number Title Priority Date Filing Date
KR1019940012225A KR950032925A (en) 1994-05-31 1994-05-31 Automatic brake control device of excavator

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030058381A (en) * 2001-12-31 2003-07-07 대우종합기계 주식회사 hydraulic control apparatus for a brake and pilot valve of a wheel loader
KR100779367B1 (en) * 2006-08-21 2007-11-23 두산인프라코어 주식회사 Unloading valve block for preventing leackage of hydraulic oil

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030058381A (en) * 2001-12-31 2003-07-07 대우종합기계 주식회사 hydraulic control apparatus for a brake and pilot valve of a wheel loader
KR100779367B1 (en) * 2006-08-21 2007-11-23 두산인프라코어 주식회사 Unloading valve block for preventing leackage of hydraulic oil

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