KR940000138Y1 - Parking brake protecting device of heavy equipment - Google Patents
Parking brake protecting device of heavy equipment Download PDFInfo
- Publication number
- KR940000138Y1 KR940000138Y1 KR2019910004293U KR910004293U KR940000138Y1 KR 940000138 Y1 KR940000138 Y1 KR 940000138Y1 KR 2019910004293 U KR2019910004293 U KR 2019910004293U KR 910004293 U KR910004293 U KR 910004293U KR 940000138 Y1 KR940000138 Y1 KR 940000138Y1
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- KR
- South Korea
- Prior art keywords
- parking brake
- driving
- valve
- brake
- pump
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
- B60T13/686—Electrical control in fluid-pressure brake systems by electrically-controlled valves in hydraulic systems or parts thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/02—Arrangements of pumps or compressors, or control devices therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2400/00—Special features of vehicle units
- B60Y2400/81—Braking systems
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
- Braking Systems And Boosters (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
내용 없음.No content.
Description
제1도는 종래의 유압회로도.1 is a conventional hydraulic circuit diagram.
제2도는 본 고안의 유압회로도로서, 제2a도는 주차브레이크 잠금상태의 유압회로도이고, 제2b도는 주차브레이크 해제상태의 유압회로도.2 is a hydraulic circuit diagram of the present invention, Figure 2a is a hydraulic circuit diagram of the parking brake lock state, Figure 2b is a hydraulic circuit diagram of the parking brake release state.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 주차브레이크 밸브 2 : 전원1: Parking brake valve 2: Power
3 : 주행스위치 4 : 전기식 전후진 밸브3: driving switch 4: electric forward and backward valve
5 : 주행방향 제어용 밸브 6 : 주행모터5: Valve for driving direction control 6: Driving motor
7 : 변속기 8 : 주차브레이크7: transmission 8: parking brake
9 : 압력스위치 P1: 주행펌프9: pressure switch P 1 : travel pump
P2: 주행보조펌프 P3: 브레이크펌프P 2 : driving auxiliary pump P 3 : brake pump
본 고안은 휠타입 중장비의 유압작동식 주차브레이크를 보호하기 위한 장치에 관한 것이다.The present invention relates to a device for protecting a hydraulically operated parking brake of a wheel type heavy equipment.
구체적으로는 휠타입 중장비의 주차브레이크가 잠금에 놓여있는 상태에서는 중장비 주행장치의 작동을 불가능하게 하여 주차브레이크를 보호하도록 한 것으로서, 주행장치에 압력스위치를 설치하고 이를 브레이크 장치의 유압통로와 연결하여 브레이크 장치가 잠금상태에 있을때는 주행장치가 작동할 수 없도록 한 것에 관한 것이다.Specifically, the parking brake of the wheel-type heavy equipment is used to protect the parking brake by disabling the heavy-duty traveling device. The pressure switch is installed on the traveling device and is connected to the hydraulic passage of the brake device. It relates to disabling the traveling device when the brake device is locked.
종래의 휠타입 중장비는 주차를 위한 브레이크 시스템과 주행을 위한 동력전달 시스템이 각각 별도로 구성되어 있어, 주차브레이크의 작동(잠금 및 해제)에 관계없이 주행을 위한 동력이 주행장치에 전달되어 주차브레이크가 손상되는 경우가 빈번하게 발생되었다.In the conventional wheel type heavy equipment, the brake system for parking and the power transmission system for driving are configured separately, so that the driving brake is transmitted to the driving device regardless of the operation of the parking brake (locking and releasing). Injuries frequently occurred.
이를 구체적으로 살펴보면, 종래의 동력전달 시스템 및 브레이크 시스템은 제1도에 도시된 바와같이 주차브레이크 밸브(1)에 연결된 유압장치는 주차브레이크(8)만을 단독으로 제어되도록 구성되어 있고, 전기식 전후진 밸브(4) 및 주행방향 제어용 밸브(5)에 연결된 동력전달 장치는 주행모터(6) 및 변속기(7)만을 구동시키도록 되어 있었다.Specifically, the conventional power transmission system and the brake system, as shown in FIG. The power transmission device connected to the valve 4 and the driving direction control valve 5 was configured to drive only the driving motor 6 and the transmission 7.
따라서 주차브레이크 밸브(1)에서의 잠금과 해제에 관계없이 주행스위치(3)을 조작하면 전기식 전후진 밸브(4)가 작동하여 주행방향 제어용 밸브(5)를 도시한 바와같이 이동시켜 주행펌프(P1)에서 토출된 작동유는 주행모터(6) 및 변속기(7)를 작동시켜 장비를 주행시킨다.Therefore, when the driving switch 3 is operated regardless of the locking and releasing of the parking brake valve 1, the electric forward and backward valve 4 is operated to move the driving direction control valve 5 as shown in the drawing, and the driving pump ( The hydraulic fluid discharged from P 1 ) drives the driving motor 6 and the transmission 7 to drive the equipment.
따라서, 운전자가 부주의로 주차브레이크(8)을 해제하지 않거나 주차브레이크 장치의 고장등으로 인하여 주차브레이크(8)가 잠금상태에 있음에도 불구하고 주행스위치(3)를 주행위치로 조작하게 되면 주차브레이크의 디스크나 라이닝에 손상을 입히게 되었다.Therefore, even if the driver does not release the parking brake 8 inadvertently or if the parking brake 8 is locked due to a breakdown of the parking brake device or the like, the driving switch 3 is operated to the driving position. The disc or lining could be damaged.
본 고안은 상기와 같은 문제점을 제거하기 위하여 안출된 것으로서 운전자의 부주의 및 고정등으로 인하여 주차브레이크가 잠금상태에서 주행하고자 하여도 주행을 위한 동력이 전달될 수 없도록 하여 주차브레이크의 손상을 방지하는데 목적이 있다.The present invention was devised to eliminate the above problems, and the purpose is to prevent damage to the parking brake by preventing power from being transmitted for driving even when the parking brake is intended to run in a locked state due to the carelessness and fixation of the driver. There is this.
상기 목적을 달성하기 위한 본 고안의 특징은 주행펌프에 주행방향제어용 밸브와 주행모터 및 변속기가 연결되고, 주행보조펌프에는 전원 및 주행스위치에 의해 작동되는 전기식 전후진 밸브가 연결되며, 브레이크 펌프에는 주차브레이크 밸브 및 주차브레이크가 연결되어 상기 주행방향 제어용 밸브의 작동에 의해 주행이 되고 주차브레이크 밸브의 작동에 의해 주차상태를 제어되도록 한 휠타입 중장비에 있어서, 상기 주행스위치와 전원 사이에 압력스위치를 설치하고, 상기 압력스위치를 주차 브레이크 밸브와 주차브레이크 사이의 유압통로에 연결하여 브레이크 펌프의 작동유가 압력스위치에 유압을 가해야 전기식 전후진 밸브가 제어되어 주행을 할 수 있도록 한 것이다.Features of the present invention for achieving the above object is a driving direction control valve and the driving motor and the transmission is connected to the driving pump, the driving auxiliary pump is connected to the electric forward and backward valve operated by the power and the traveling switch, the brake pump In a wheel type heavy equipment in which a parking brake valve and a parking brake are connected to be driven by the operation of the driving direction control valve, and the parking state is controlled by the operation of the parking brake valve, a pressure switch is provided between the driving switch and the power supply. The pressure switch is connected to the hydraulic passage between the parking brake valve and the parking brake so that the hydraulic oil of the brake pump applies hydraulic pressure to the pressure switch so that the electric forward and backward valve can be controlled and run.
이하 첨부된 도면에 의거하여 본 고안의 구성을 상세히 설명하면 다음과 같다.Referring to the configuration of the present invention in detail based on the accompanying drawings as follows.
제2도는 본 고안이 적용된 유압회로도로서 제2a도는 주차브레이크가 잠금상태일때의 유압회로도이고, 제2b도는 주차브레이크가 해제상태일때의 유압회로도를 나타낸 것이다.2 is a hydraulic circuit diagram to which the present invention is applied, and FIG. 2a is a hydraulic circuit diagram when the parking brake is locked, and FIG. 2b is a hydraulic circuit diagram when the parking brake is released.
도시된 바와같이 주행보조펌프(P2)에는 전원(2) 및 주행스위치(3)에 의해 위치이동하는 전기식전후진 밸브(4)를 연결하여 주행방향제어용 밸브(5)의 위치이동을 시킬 수 있도록 하되, 상기 전원(2)과 주행스위치(3) 사이에 압력스위치(9)를 설치하고, 주행펌프(P1)에는 상기 주행방향 제어용 밸브(5)의 위치이동에 따라 주행방향이 변하는 주행모터(6) 및 변속기(7)를 연결한다.As shown in the drawing, the driving auxiliary pump P 2 may be connected to an electric forward and backward valve 4 which is moved by the power supply 2 and the driving switch 3 to move the position of the driving direction control valve 5. The pressure switch 9 is installed between the power supply 2 and the travel switch 3, and the travel pump P 1 travels in which the travel direction is changed according to the position movement of the travel direction control valve 5. The motor 6 and the transmission 7 are connected.
그리고, 브레이크 펌프(P3)에는 릴리이프 밸브(12) 및 주차브레이크 밸브(1)를 설치하여 주차브레이크(8)의 스프링(11)이 내장된 실린더(10)와 연결하되, 상기 압력스위치(9)를 상기 주차브레이크 밸브(1)와 주차브레이크(8)사이의 통로에 연결하여 주차브레이크 밸브(1)를 통해 주차브레이크(8)에 작동유가 작용할때만 압력스위치가 접지되도록 구성한다.In addition, the brake pump P 3 is provided with a relief valve 12 and a parking brake valve 1 to be connected to the cylinder 10 in which the spring 11 of the parking brake 8 is embedded, and the pressure switch ( 9) is connected to the passage between the parking brake valve 1 and the parking brake 8 so that the pressure switch is grounded only when hydraulic oil acts on the parking brake 8 through the parking brake valve 1.
미설명부호 13은 탱크이다.Reference numeral 13 is a tank.
상기와 같이 구성된 본 고안의 작용효과를 설명하면 다음과 같다.Referring to the effect of the present invention configured as described above are as follows.
제2a도에 도시한 바와같이 중장비의 주행을 정지시키고 주차를 할 경우에는 브레이크 펌프(P3)로 부터 토출되는 작동유가 실린더(10)로 유입되는 것을 주차브레이크 밸브(1)로 차단하면 브레이크 펌프(P3)로 부터 토출되는 작동유는 탱크(14)로 드레인되고, 주행시 실린더에 작용했던 작동유 또한 압력이 제거되어 스프링(11)의 탄력에 의해 탱크(13)로 드레인된다.As shown in FIG. 2A, when the driving of the heavy equipment is stopped and the vehicle is parked, when the hydraulic fluid discharged from the brake pump P3 is blocked by the parking brake valve 1, the brake pump ( The hydraulic oil discharged from P 3 ) is drained to the tank 14, and the hydraulic oil which acted on the cylinder during driving is also removed from the pressure and drained to the tank 13 by the elasticity of the spring 11.
따라서, 스프링(11)의 탄력에 의해 주차브레이크(8)는 잠금상태를 유지하게 된다.Therefore, the parking brake 8 is kept locked by the spring 11.
이와같은 상태에서 작업자가 부주의로 주행스위치(3)를 조작하여 주행을 하고자 하여도 주차브레이크 시스템의 유압에 의해 온, 오프되는 압력스위치(9)가 전원을 차단하고 있으므로 전기식전후진 밸브(4)가 작동하지 않으므로 주행 시스템은 가동을 하지 못하게 된다.In this state, even if the operator inadvertently operates the drive switch 3, the pressure switch 9, which is turned on and off by the hydraulic pressure of the parking brake system, cuts off the power, so the electric forward and backward valve 4 The drive system will not run because is not working.
그 후, 주행을 하고자 할때에는 주차브레이크 밸브(1)를 제2b도와 같이 위치이동시키면 실린더(10)에 작동유가 유입되어 주차브레이크(8)를 해제시키게 되고, 주차브레이크 시스템의 통로에 연결된 압력스위치(9)는 작동유에 의해 전원을 공급할 수 있는 상태를 유지하게 되므로 주행스위치(3)를 작동시키면 중장비가 주행을 할 수 있는 상태가 된다.After that, when the vehicle is to be driven, the parking brake valve 1 is moved as shown in FIG. 2b so that hydraulic oil flows into the cylinder 10 to release the parking brake 8, and a pressure switch connected to the passage of the parking brake system. (9) maintains a state capable of supplying power by the working oil, so when the driving switch 3 is operated, the heavy equipment can run.
상기와 같이 본 고안은 주차브레이크(8)를 해제하지 않으면 압력스위치(9)에서 전기식 전후진 밸브(4)의 조작을 위한 전류가 차단되도록 함으로서, 운전자의 부주의로 주차브레이크를 해제하지 않거나 고장등으로 주차브레이크가 잠금상태에 놓여있을 경우 주행이 불가능하도록 하여 주차브레이크의 디스크나 라이닝이 손상을 입는 것을 방지할 수 있도록 한 고안이다.As described above, the present invention allows the electric current for the operation of the electric forward and backward valve 4 to be cut off from the pressure switch 9 unless the parking brake 8 is released, thereby inadvertently releasing the parking brake or failing the driver. As a result, when the parking brake is locked, it is impossible to drive so that the disc or lining of the parking brake can be damaged.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019910004293U KR940000138Y1 (en) | 1991-03-30 | 1991-03-30 | Parking brake protecting device of heavy equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019910004293U KR940000138Y1 (en) | 1991-03-30 | 1991-03-30 | Parking brake protecting device of heavy equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR920018026U KR920018026U (en) | 1992-10-17 |
| KR940000138Y1 true KR940000138Y1 (en) | 1994-01-10 |
Family
ID=19312215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019910004293U KR940000138Y1 (en) | 1991-03-30 | 1991-03-30 | Parking brake protecting device of heavy equipment |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR940000138Y1 (en) |
-
1991
- 1991-03-30 KR KR2019910004293U patent/KR940000138Y1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR920018026U (en) | 1992-10-17 |
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