KR970000741Y1 - Hydraulic device for a truck - Google Patents
Hydraulic device for a truck Download PDFInfo
- Publication number
- KR970000741Y1 KR970000741Y1 KR2019930025034U KR930025034U KR970000741Y1 KR 970000741 Y1 KR970000741 Y1 KR 970000741Y1 KR 2019930025034 U KR2019930025034 U KR 2019930025034U KR 930025034 U KR930025034 U KR 930025034U KR 970000741 Y1 KR970000741 Y1 KR 970000741Y1
- Authority
- KR
- South Korea
- Prior art keywords
- hydraulic
- hydraulic device
- cylinder
- control valve
- gear pump
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/044—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by electrically-controlled means, e.g. solenoids, torque-motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0401—Valve members; Fluid interconnections therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/32—Directional control characterised by the type of actuation
- F15B2211/327—Directional control characterised by the type of actuation electrically or electronically
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
내용 없음.No content.
Description
제1도는 본 고안의 유압 구성도.1 is a hydraulic configuration of the present invention.
제2도는 종래 기술의 유압 구성도.2 is a hydraulic diagram of the prior art.
＊ 도면의 주요부분에 대한 부호의 설명＊ Explanation of symbols on main parts of drawing
10 : 오일탱크 20 : 석션호오스10: oil tank 20: suction hose
14 : 기어펌프 16 : 유압가동장치14 gear pump 16 hydraulic actuator
18 : 실린더 20 : 고압호오스18: cylinder 20: high pressure hose
22 : 방향제어밸브 24, 24a : 솔레노이드밸브22: direction control valve 24, 24a: solenoid valve
26 : 유압장치26: hydraulic device
본 고안은 덤프트럭의 다단식 실린더의 유압장치에 관한 것으로 더욱 상세하게는 이물질이 유입되어도 밸브작동에 영향을 미치지 않음으로 고장 발생율을 적게하고 고장에 대한 대책을 신속하게 이루도록 안출된 덤프트럭용 유압장치에 관한 것이다.The present invention relates to a hydraulic system of a multi-stage cylinder of a dump truck. More specifically, a dump truck hydraulic system designed to reduce the occurrence rate of failures and to quickly implement a countermeasure against failures does not affect the valve operation even when foreign substances are introduced. It is about.
종래에는 제2도에서와 같이 3포지션 방향제어밸브(1)가 사용되어 실린더(2)의 작동을 이루게 되는데 3포지션 방향제어밸브(1)의 취약점은 이물질이 유입될 경우 밸브작동을 이룰수가 없기 때문에 유념하여야 되는 것이다.Conventionally, as shown in FIG. 2, the three-position directional control valve 1 is used to achieve the operation of the cylinder 2. The weakness of the three-position directional control valve 1 cannot achieve the valve operation when foreign substances are introduced. That's why you have to keep in mind.
또한, 일본 특허공개공보소 59-80508호와 같은 복수의 유압액츄에이터 작동회로에 있어서는 파이럿 절환밸브에 제1의 유체압액츄에이터회로의 작동 유체압을 파이럿 압력으로하여 작용시키는 것에 의해 초동부하가 큰 유체압액츄에이터를 지체없이 원활히 초동작동시키고 동시에 유량을 많이 필요로 하는 제2 유체압액츄에이터의 작동속도를 높히도록 하고 있으나 유체압액츄에이터의 작동유체가 일정치 이하로 하강할 때 파이럿 절환밸브가 연통회로를 열수 있는 작용이 미비하여 그 기능이 취약하여 제기능을 다하지 못하게 되는 문제점이 있었다.Also, in a plurality of hydraulic actuator operating circuits such as Japanese Patent Application Laid-Open No. 59-80508, a fluid having a high initial load by acting on the pilot switching valve by operating the working fluid pressure of the first fluid pressure actuator circuit as a pilot pressure. It is designed to start the pressure actuator smoothly without delay and to increase the operating speed of the second fluid pressure actuator that requires a lot of flow.However, when the working fluid of the fluid pressure actuator falls below a certain value, the pilot switching valve opens the communication circuit. There was a problem in that the function of opening is incomplete and its function is weak so that it cannot function properly.
이에 본 고안은 이와 같은 종래의 문제점을 해결하기 위하여 안출된 것으로, 그 목적은 방향제어밸브를 솔레노이드밸브 2개로 구비되어 이물질이 유입되더라도 밸브작동에 영향을 주지 않고 특별한 관리를 요구하지 않으면서 오랜 사용이 이루는 덤프트럭용 유압장치를 제공하는 데 있다.The present invention has been devised to solve such a conventional problem, and its purpose is to provide two directional control valves with two solenoid valves, even if foreign substances are introduced, without affecting the operation of the valve and without requiring special management for a long time. The present invention provides a hydraulic device for a dump truck.
상기 목적을 달성하기 위한 기술적인 수단으로서 본 고안은, 오일탱크에서 유입되는 오일을 실린더와 연결시키는 방향제어밸브가 한쌍의 솔레노이드밸브로 구성되는 것이 특징이다.As a technical means for achieving the above object, the present invention is characterized in that the direction control valve for connecting the oil flowing from the oil tank to the cylinder is composed of a pair of solenoid valves.
이하, 첨부된 도면에 의하여 본 고안을 상세하게 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
본 고안의 유압장치(26)는 제1도에 도시된 바와같이, 오일탱크(10)에 석션호오스(12)로 연결된 기어펌프(14)에는 유압가동장치(16)가 연결되고 기어펌프(14)에서 실린더(18)를 고압호오스(20)(20a)와 저압호오스(30)(30a)로 연결시킨 유로상에 방향제어밸브(22)를 장착한 유압장치(26)를 구비한다.Hydraulic device 26 of the present invention, as shown in Figure 1, the hydraulic pump 16 is connected to the gear pump 14 connected to the suction tank 12 to the oil tank 10, the gear pump 14 ), A hydraulic device 26 equipped with a direction control valve 22 on a flow path connecting the cylinder 18 to the high pressure hoses 20 and 20a and the low pressure hoses 30 and 30a.
상기 방향제어밸브(22)에는 한쌍의 솔레노이드밸브(24)(24a)가 2포지션을 이루어 구성되고 있다.In the directional control valve 22, a pair of solenoid valves 24 and 24a constitute two positions.
이와같이 구성된 본 고안은 실린더(18)의 상승 시에는 유압가동장치(16)의 구동력으로 기어펌프(14)가 구동되면 석션호오스(12)로 오일탱크(10)의 작동유가 빨려들어 온다. 이 작동유는 기어펌프(14)를 통한후 토출압으로 상승하여 고압호오스(20)를 통하여 방향제어밸브(22)에 도달한다.The present invention configured as described above, when the gear pump 14 is driven by the driving force of the hydraulic actuator 16 when the cylinder 18 is raised, the hydraulic oil of the oil tank 10 is sucked into the suction hose 12. The hydraulic fluid rises to the discharge pressure after passing through the gear pump 14 and reaches the direction control valve 22 through the high pressure hose 20.
따라서, 솔레노이드밸브(24)가 상승위치로 되면 작동유는 고압호오스(20a)를 통하여 실린더(18)를 작동시키게 되며, 이때 솔레노이드밸브(24a)는 작동유가 오일탱크(10)로 들어가지 못하도록 통로를 차단하게 된다.Accordingly, when the solenoid valve 24 is in the ascending position, the hydraulic oil operates the cylinder 18 through the high pressure hose 20a, and the solenoid valve 24a prevents the hydraulic oil from entering the oil tank 10. Will be blocked.
한편, 실린더(18)의 하강 시에는 덤프트럭의 적재함은 자중으로 하강하는 구조로 되어있기 때문에 솔레노이드 (24a)를 하강위치로 하면 실린더(30a)를 하강위치로 하면 실린더(18)내의 작동유는 저압호오스(30)를 통하여 솔레노이드(24a)를 거쳐서 저압호오스(30a)를 경유하여 오일탱크(10)로 돌아오게 된다.On the other hand, when the cylinder 18 is lowered, the dump truck loading box is lowered by its own weight. Therefore, when the solenoid 24a is in the lowered position, the hydraulic fluid in the cylinder 18 is lowered when the cylinder 30a is in the lowered position. The hose 30 returns to the oil tank 10 via the solenoid 24a via the low pressure hose 30a.
이와같이 본 고안은 이물질의 유입이 되더라도 작동에 아무런 영향을 끼치지 않게 되고 안전한 작동으로 사용에 편리한 효과가 있다.In this way, the present invention does not affect the operation even if the inflow of foreign matters, there is a convenient effect to use safe operation.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019930025034U KR970000741Y1 (en) | 1993-11-25 | 1993-11-25 | Hydraulic device for a truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019930025034U KR970000741Y1 (en) | 1993-11-25 | 1993-11-25 | Hydraulic device for a truck |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR950014681U KR950014681U (en) | 1995-06-17 |
| KR970000741Y1 true KR970000741Y1 (en) | 1997-02-06 |
Family
ID=19368764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019930025034U KR970000741Y1 (en) | 1993-11-25 | 1993-11-25 | Hydraulic device for a truck |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR970000741Y1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101965902B1 (en) * | 2016-09-05 | 2019-08-13 | 고인영 | Apparatus for controlling oil pressure of dump equpment |
-
1993
- 1993-11-25 KR KR2019930025034U patent/KR970000741Y1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR950014681U (en) | 1995-06-17 |
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