KR950032925A - Automatic brake control device of excavator - Google Patents
Automatic brake control device of excavator Download PDFInfo
- 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
- Authority
- KR
- South Korea
- Prior art keywords
- hydraulic oil
- solenoid valve
- brake
- hydraulic
- mode
- Prior art date
Links
Landscapes
- 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
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)
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 |
Family
ID=66685675
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019940012225A KR950032925A (en) | 1994-05-31 | 1994-05-31 | Automatic brake control device of excavator |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR950032925A (en) |
Cited By (2)
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 |
-
1994
- 1994-05-31 KR KR1019940012225A patent/KR950032925A/en active IP Right Grant
Cited By (2)
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 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5919243A (en) | Work brake apparatus for wheel type excavator | |
KR970015340A (en) | Emergency steering system of all hydraulic steering system | |
KR890009678A (en) | Hydraulic control circuit for working vehicles with transmission means capable of hydraulic operation | |
KR920701723A (en) | Variable displacement pump controller of hydraulic drive car | |
KR950032925A (en) | Automatic brake control device of excavator | |
KR970001763A (en) | Control device of construction machine driving system | |
JPS5825131Y2 (en) | Fluid sequential operation circuit device | |
KR970005983A (en) | Anti-theft device using brake system | |
KR970020642A (en) | Vehicle Clutch Assist Device | |
KR970026652A (en) | Hydraulic power brake | |
KR950017542A (en) | Clutch linked to parking brake operation | |
KR910001005Y1 (en) | Brake actuator | |
KR970040741A (en) | Brake braking system with auxiliary brake braking system in vehicle | |
KR960004121A (en) | Swing brake device of excavator | |
KR19980046621A (en) | Exhaust brake control device of diesel vehicle | |
KR950017578A (en) | Parking brake automatic release device | |
KR100274380B1 (en) | A hydraulic system for controlling a damping device and a shock absorber device of wheel type excavator | |
KR900001441B1 (en) | Anti-skid device of vehicle | |
KR960007600Y1 (en) | Brake system of the wheeled excavator | |
KR960008075A (en) | Transmission and brake changer of heavy equipment | |
KR970026211A (en) | Shift lever control device | |
KR930703172A (en) | Steering Control System by Pilot Pressure | |
KR970020806A (en) | Vehicle braking force | |
JPS57174541A (en) | Oil-pressure working machine | |
KR970074420A (en) | Heavy Duty Parking Brake Protector |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
N231 | Notification of change of applicant | ||
E701 | Decision to grant or registration of patent right | ||
NORF | Unpaid initial registration fee |