KR950006737Y1 - A automatic operating device of working tools for bulldozer - Google Patents
A automatic operating device of working tools for bulldozer Download PDFInfo
- Publication number
- KR950006737Y1 KR950006737Y1 KR2019910016188U KR910016188U KR950006737Y1 KR 950006737 Y1 KR950006737 Y1 KR 950006737Y1 KR 2019910016188 U KR2019910016188 U KR 2019910016188U KR 910016188 U KR910016188 U KR 910016188U KR 950006737 Y1 KR950006737 Y1 KR 950006737Y1
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- valve
- hydraulic
- hydraulic pump
- bulldozer
- tilt
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2278—Hydraulic circuits
- E02F9/2282—Systems using center bypass type changeover valves
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
- E02F3/80—Component parts
- E02F3/84—Drives or control devices therefor, e.g. hydraulic drive systems
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
- E02F9/2267—Valves or distributors
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2278—Hydraulic circuits
- E02F9/2285—Pilot-operated systems
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2278—Hydraulic circuits
- E02F9/2292—Systems with two or more pumps
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
내용 없음.No content.
Description
제1도는 종래 불도저의 기계식 작업기 작동조작장치의 유압회로도.1 is a hydraulic circuit diagram of a mechanical work machine operating device of a conventional bulldozer.
제2도는 본 고안에 따른 불도저의 유압식 작업기 작동조작장치의 유압 회로도.2 is a hydraulic circuit diagram of a hydraulic work machine operation control device of the bulldozer according to the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
4 : 보조유압펌프 5 : 주유압관로4: auxiliary hydraulic pump 5: main hydraulic pipe
8 : 리퍼 작동용 방향전환밸브 11 : 리퍼 작동용 실린더8: Direction change valve for ripper operation 11: Cylinder for ripper operation
12 : 릴리프 밸브 14 : 솔레노이드 밸브12: relief valve 14: solenoid valve
15 : 틸트 작동용 조작장치 18 : 작동레버15: tilt operating device 18: operating lever
19 : 첵 밸브19: check valve
본 고안은 불도저의 작동을 유압식으로 수행하는 장치, 특히 불도저의 리퍼작동을 유압식으로 수행하는 불도저의 유압식 작업기 작동조작장치에 관한 것이다.The present invention relates to an apparatus for hydraulically performing an operation of a bulldozer, and more particularly, to a hydraulic work machine operating apparatus for a bulldozer that hydraulically performs a ripper operation of a bulldozer.
종래에는 불도저의 작동을 기계적인 방식에 의해 수행해 왔다. 제1도는 종래 불도저의 기계식 작업기 작동조작장치의 유압 회로도이다. 상기 도면에서, 유압탱크(1')에는 유압 모터(2')가 설치된 유압펌프(3')가 설치되어 있고, 상기 유압펌프(3')에는 주유압공급관로(4')가 연결되어 있으며, 또 이 주유압공급관로(4')에는 측부에 링키지 (5')를 매개로 설치된 레버(6')를 구비한 3개의 방향전환밸브(7',8', 및 9')가 순차적으로 배치되어 있다. 상기한 구성에 따라 작업자가 작업기(10',11' 및 12')를 작동하려면 레버(6')를 조작하여 링키지(5')를 통해 방향전환밸브(7',8', 및 9')를 작동시켜 주어야 한다. 따라서, 기계식은 작업자가 인력에 의해 레버를 움직여 줌으로써 방향전환밸브 (7',8', 및 9')를 조작해 주어야 하기 때문에 작업자가 피로해지기 쉽고, 또한 레버를 움직여 줄 수 있는 곳에 방향전환밸브를 설치하여야 하기 때문에 설치공간이 넓어야 한다.Conventionally, the operation of the bulldozer has been performed in a mechanical manner. 1 is a hydraulic circuit diagram of a mechanical work machine operating device of a conventional bulldozer. In the drawing, the hydraulic tank 1 'is provided with a hydraulic pump 3' installed with the hydraulic motor 2 ', and the hydraulic pump 3' is connected with a main hydraulic pressure supply line 4 '. In addition, the main hydraulic pressure supply line 4 'is sequentially provided with three directional valves 7', 8 ', and 9' having a lever 6 'provided on the side via a linkage 5'. It is arranged. According to the above configuration, the operator operates the levers 6 'to operate the work machines 10', 11 'and 12' through the linkage 5 'and the directional valves 7', 8 ', and 9'. Should be activated. Therefore, since the mechanical type requires the operator to operate the direction change valves 7 ', 8', and 9 'by moving the lever by manpower, it is easy for the worker to be tired and the direction change where the lever can be moved. Since the valve must be installed, the installation space should be large.
상기한 문제점을 해소하기 위해서, 기존의 작동회로에 보조유압펌프를 설치하고 또 상기 보조유압펌프와 방향전환밸브 사이에 파일럿 관로를 연결하여 유압 작동회로를 구성하여, 조작레버에 의해 보조유압탱크에서 공급되는 파일럿 작동유를 사용하여 작업기에 연결된 방향전환 밸브를 조작해준다.In order to solve the above problems, the auxiliary hydraulic pump is installed in the existing operating circuit, and the pilot hydraulic pipe is connected between the auxiliary hydraulic pump and the directional valve to form a hydraulic operating circuit. The pilot oil supplied is used to operate the directional valve connected to the work machine.
그러나, 종래 기술에 의하면 불도저 선택 작업장치인 리퍼를 유압에 의해 작동시킬 수 없으며, 잠금기능을 수행하도록 솔레노이드 밸브가 기능을 발휘하지 못하게 된다.However, according to the prior art, the ripper, which is the bulldozer selection work device, cannot be operated by hydraulic pressure, and the solenoid valve does not function to perform the locking function.
본 고안은 상기한 문저젬을 해소하기 위해서 안출된 것으로서, 리퍼 작업기에 연결된 주유압관로상에 방향전환밸브를 설치하고, 상기 방향전환밸브의 양쪽 스플에는 파일럿 관로를 연결하여 보조유압펌프측의 분기관로 말단에 설치된 원격제어밸브에 연결시켜 주며, 또한 이 원격제어 밸브에는 밸브제어용 조작회로를 설치하여 구성한 불도저의 유압식 작업기 작동조작 장치를 제공한다.The present invention was devised to solve the above-mentioned door gem, and provided with a directional valve on the main hydraulic pipe connected to the ripper working machine, and connecting the pilot pipe to both of the spools of the directional valve to the auxiliary hydraulic pump side. The engine is connected to a remote control valve installed at the end of the engine, and the remote control valve is provided with a hydraulic work machine operation device of a bulldozer formed by installing a control circuit for valve control.
이하에서는 첨부도면을 참조하여 본 고안을 상세히 설명하기로 한다. 제 2도는 본 고안에 따른 불도저의 기계식 작업기 작동조작 장치를 도시한 것이다. 유압탱크(1)에는 모터(2)에 연결되어 있는 주유압 펌프(3)와 보조유압펌프(4)가 설치되어 있다. 상기 주유압펌프(3)에는 주유압관로(5)가 연결되어 있고, 상기 주유압관로(5)에는 틸트작동용 방향전환밸브(6), 리프트 작동을 방향전환밸브(7) 및 본 고안에 관한 리퍼 작동용 방향전환밸브(8)가 설치되어 있다. 그리고, 상기 방향전환밸브(7, 8, 및 9)에는 각각 틸트 작동용 실린더(9), 리프트 작동용 실린더(10)및 본 고안에 관한 리퍼 작동용 실린더(11)가 연결된다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. Figure 2 shows the mechanical work machine operating device of the bulldozer according to the present invention. The hydraulic tank 1 is provided with a main hydraulic pump 3 and an auxiliary hydraulic pump 4 connected to the motor 2. The main oil pressure pump (3) is connected to the main oil pressure line (5), the main oil pressure line (5) in the direction change valve (6) for the tilt operation, lift operation in the direction change valve (7) and the present invention The direction change valve 8 for a ripper operation is provided. In addition, the direction switching valves 7, 8, and 9 are connected to a tilting cylinder 9, a lift operating cylinder 10, and a ripper operating cylinder 11 according to the present invention, respectively.
한편, 상기 보조유압펌프(4)에는 유압탱크(1)로의 귀환관로가연결되어있는 릴리프 밸브(12)와 틸트 및 리프트 작동용 조작장치(13)에 관로로 연결되어 있는 솔레노이드 밸브(14)가 관로를 매개로 해서 연결되어 있다. 그리고, 상기 틸트 및 리프트 작동용 조작장치(13)와 상기 솔레노이드 밸브(14)를 연결하는 관로에는 분기관로가 연결되어 있어서, 이 분기관로에 다시 틸트 작동용 조작장치(15)가 설치된다. 이 틸트작동용 조작장치(15)에는 두개의 제어밸브(16a과 16b)가 설치되어 있고, 각각의 제어밸브(16a과 16b)는 리퍼 작동용 방향전환밸브(8)의 양쪽 스플에 파일럿 관로로 연결되어 있다. 한편, 상기한 각각의 제어밸브(16a과 16b)에는 절환이 가능하도록 유압관로로의 귀환관로가 연결되어 있다. 그리고, 상기한 두개의 제어밸브(16a과 16b)의 한쪽 스플에는 조작레버(17)가 설치된 조작판넬(18)이 부착되어 있다. 상기 조작레버(17)의 작동에 의해 각각의 제어밸브(16a와 16b)에 연결된 파일럿 관로는 보조유압펌프(4)에 연결된 관로에 접속되던가 또는 탱크에 연결된 관로에 접속되던가 하는 것이 선택된다.On the other hand, the auxiliary hydraulic pump (4) has a solenoid valve (14) connected to the relief valve 12, which is connected to the return pipe to the hydraulic tank (1) and the tilt and lift operation device 13 by a pipeline It is connected via a pipeline. In addition, a branch line is connected to the pipe line connecting the tilt and lift operation device 13 and the solenoid valve 14, and the tilt device is again provided with a tilt operation device 15. . This control device 15 for tilt operation is provided with two control valves 16a and 16b, and each control valve 16a and 16b is connected to the pilot pipe on both spools of the direction change valve 8 for ripper operation. It is connected. On the other hand, each of the control valve (16a and 16b) described above is connected to the return line to the hydraulic line so that switching is possible. In addition, an operation panel 18 provided with an operation lever 17 is attached to one of the two control valves 16a and 16b. The pilot pipe connected to each of the control valves 16a and 16b by the operation of the operation lever 17 is selected to be connected to a pipe connected to the auxiliary hydraulic pump 4 or to a pipe connected to the tank.
또한, 전술한 릴리프 밸브(12)에는 상기 솔레노이드밸브(6)로 연결된 관로가 설치되어 있고 여기에는 보조유압펌프(4)로 부터 공급되는 작동유의 진행을 저지하는 첵 밸브(19)가 설치되어 있다.In addition, the above-described relief valve 12 is provided with a conduit connected to the solenoid valve 6, and a check valve 19 is installed therein to prevent the progress of the hydraulic oil supplied from the auxiliary hydraulic pump 4. .
상기한 구성중 본 고안에 관한 구성에 따른 작용을 살펴보면 다음과 같다. 작업자가 틸트 작동용 조작장치(15)에 설치되어 있는 조작레버(17)를 좌측으로 밀어주면 보조유압펌프(4)에서 작동유가 솔레노이드 밸브(14)를 지나 제어밸브(16a)를 거쳐 파일럿 관로를 통해 틸트 작동용 방향전환밸브(8)의 우측에 공급된다.Looking at the operation according to the configuration of the present invention of the above configuration is as follows. When the operator pushes the operation lever 17 installed on the tilting operation device 15 to the left side, the hydraulic oil flows from the auxiliary hydraulic pump 4 through the solenoid valve 14 and through the control valve 16a to the pilot pipe line. It is supplied to the right side of the direction switching valve (8) for the tilt operation.
이에 따라, 상기 틸트 작동용 방향전환밸브(8)는 좌측으로 이동하게 되고, 리퍼 작동용 실린더(11)의 우측 체임버에 작동유가 공급되어 피스톤이 좌측으로 이동하게 된다.Accordingly, the tilt operation direction switching valve 8 is moved to the left side, the hydraulic oil is supplied to the right chamber of the ripper operation cylinder 11 to move the piston to the left.
반대로, 작업자가 틸트 작동용 조작장치(15)에 설치되어 있는 조작 레버(17)을 우측으로 밀어주면 보조유압펌프(4)에서 토출된 작동유가 역시 솔레노이드 밸브(14)를 지나 제어밸브(16b)를 거쳐 파일럿 관로를 통해 틸트 작동용 방향전환밸브(8)의 좌측에 공급된다. 이에 따라, 상기 틸트 작동용 방향전환밸브(8)는 우측으로 이동하게 되고, 리퍼 작동용 실린더(11)의 좌측 체임버에 작동유가 공급되어 피스톤이 우측으로 이동하게 된다.On the contrary, when the operator pushes the operation lever 17 installed on the tilt operating device 15 to the right side, the hydraulic oil discharged from the auxiliary hydraulic pump 4 also passes through the solenoid valve 14 to control valve 16b. Via the pilot pipe is supplied to the left side of the direction switching valve (8) for the tilt operation. Accordingly, the tilt operation direction switching valve 8 is moved to the right, the hydraulic oil is supplied to the left chamber of the ripper operation cylinder 11 to move the piston to the right.
한편, 상기 솔레노이드 밸브(14)에 전류를 공급하면 솔레노이드 밸브(14)는 좌측으로 이동하여 보조유압탱크(4)에서 공급된 작동유가 상기 솔레노이드 밸브(14)를 통과하지 못하고, 일정압력이 되면 릴리프 밸브(12)를 통과하게 된다. 이때, 상기, 릴리프 밸브(12)를 통과한 작동유는 유압탱크(13)측과 솔레노이드 밸브(14)측으로 이동하려 하는 데, 솔레노이드 밸브(14)측에는 첵 밸브(19)가 설치되어 있어 작동유가 솔레노이드 밸브(14)를 역류하지 못하고 유압탱크(13)측으로만 이동하게 된다.On the other hand, when the current is supplied to the solenoid valve 14, the solenoid valve 14 is moved to the left so that the hydraulic fluid supplied from the auxiliary hydraulic tank 4 does not pass through the solenoid valve 14, the relief when the pressure It passes through the valve 12. At this time, the hydraulic oil passing through the relief valve 12 is intended to move to the hydraulic tank 13 side and the solenoid valve 14 side, the solenoid valve 14 side is provided with a check valve 19, the hydraulic fluid is solenoid The valve 14 does not flow back and moves only to the hydraulic tank 13 side.
상기한 본 고안의 구성 및 작용에 따라 본 고안은 리퍼를 유압에 의해 작동시킬 수 있으므로, 작업자의 피로를 덜어주며 작업능률을 향상 시킬 수 있으며, 또한 첵 밸브에 의해 작동유의 역류를 방지하여 솔레노이드 밸브의 잠금기능이 원활히 발휘되도록 해준다.According to the configuration and operation of the present invention as described above, the present invention can operate the ripper by hydraulic pressure, which can reduce the worker's fatigue and improve the work efficiency, and also prevent the back flow of the working oil by the check valve so that the solenoid valve Allows the locking function to be displayed smoothly.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019910016188U KR950006737Y1 (en) | 1991-10-01 | 1991-10-01 | A automatic operating device of working tools for bulldozer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019910016188U KR950006737Y1 (en) | 1991-10-01 | 1991-10-01 | A automatic operating device of working tools for bulldozer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR930008923U KR930008923U (en) | 1993-05-25 |
| KR950006737Y1 true KR950006737Y1 (en) | 1995-08-19 |
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ID=19320023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019910016188U KR950006737Y1 (en) | 1991-10-01 | 1991-10-01 | A automatic operating device of working tools for bulldozer |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR950006737Y1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000007997A (en) * | 1998-07-09 | 2000-02-07 | 김형벽 | Instant booster for wheel loader |
-
1991
- 1991-10-01 KR KR2019910016188U patent/KR950006737Y1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR930008923U (en) | 1993-05-25 |
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