KR960002911Y1 - Hydraulic circuit for handling dependently or independently wheel rotor of civil engineering equipments - Google Patents

Hydraulic circuit for handling dependently or independently wheel rotor of civil engineering equipments Download PDF

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KR960002911Y1
KR960002911Y1 KR2019930007948U KR930007948U KR960002911Y1 KR 960002911 Y1 KR960002911 Y1 KR 960002911Y1 KR 2019930007948 U KR2019930007948 U KR 2019930007948U KR 930007948 U KR930007948 U KR 930007948U KR 960002911 Y1 KR960002911 Y1 KR 960002911Y1
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valve
boom
control valve
hydraulic
spool
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KR2019930007948U
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Korean (ko)
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KR940027070U (en
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채석호
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현대중장비산업 주식회사
김형벽
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B19/00Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Operation Control Of Excavators (AREA)

Abstract

내용 없음.No content.

Description

토건 중장비인 휠로우더의 작업장치의 단독 및 동시 조작용 유압회로Hydraulic circuit for single and simultaneous operation of the work equipment of wheel loaders

제1도는 본 고안의 유압회로도1 is a hydraulic circuit diagram of the present invention

제2도는 종래 장치의 유압회로도2 is a hydraulic circuit diagram of a conventional device

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 메인유압펌프 2 : 파일럿펌프1: main hydraulic pump 2: pilot pump

3 : 메인컨트롤밸브 5 : 버스풀3: main control valve 5: bur spool

6 : 붐스플 7 : 붐실린더6: boom split 7: boom cylinder

8 : 버실린더 10 : 리모컨트롤밸브8: burr Cylinder 10: remote control valve

11 : 리턴필터 12 : 유압탱크11: return filter 12: hydraulic tank

13 : 선택밸브 14 : 방향절환밸브13: Selection valve 14: Directional switching valve

15 : 셔틀밸브15: Shuttle Valve

본 고안은 토건중장비인 휠로우더의 작업장치의 단독 및 동시 조작용 유압회로에 관한 것으로서, 더 상세하게는 단독조작 혹은 동시조작중의 1개로만 사용 가능하도록 되어있는 휠로우더의 작업장치의 유압회로를 필요시 2가지 회로중 어느 회로든지 하나를 선택 사용할 수 있는 회로로서 작업종류나 특성, 주변여건이나 운건자의성향에 맞춰 붐 및 버의 작동을 단독 혹은 동시조작이 가능하도록 한 것이다.The present invention relates to a hydraulic circuit for single and simultaneous operation of a work device of a wheel loader, which is a heavy construction equipment, and more specifically, a hydraulic circuit of a work device for a wheel loader that can be used only in one of a single operation or a simultaneous operation. It is a circuit that can select any one of the two circuits if necessary, and it can be used according to the type of work, characteristics, surrounding conditions, or operator's preference. It is to make the operation of single or simultaneous operation possible.

종래의 유압회로도는 제2도와 같은데 그 구성은 메인펌프(1)의 구동에 따라 토출되는 오일은 리모트컨트롤밸브(죠이스틱밸브)(10)의 좌, 우조작에 따라 메인유압관로(34)를 통하여 관로(35) 혹은 (36)을 거쳐서 버켓실린더(8)을 작동시키게 되어 있는 버우선의 단독조작 회로로 되어있기 때문에 버을 작동함과 동시에 붐을 작동시키는 것이 불가능하여 작업특성 및 운전자의 요구에 따라 필요하게되는 버과 붐의 동시 작동이 불가능한 구조이다.The conventional hydraulic circuit diagram is the same as FIG. 2, but the configuration of the oil discharged according to the driving of the main pump 1 passes through the main hydraulic pipe line 34 according to the left and right operation of the remote control valve (joystick valve) 10. Burr intended to actuate bucket cylinder (8) via conduit (35) or (36) Because it is a priority single operation circuit, Is not possible to operate the boom at the same time as the operation It is a structure that cannot operate simultaneously with the boom.

그러나 본 고안의 이와같은 종래의 결점을 제거코자 버우선이 단독 조작회로로 되어있는 휠로우더의 작업장치 유압회로를 버작동시에도 필요시에는 붐의 작동이 가능한 패렐렐 회로를 변경시켜주는 선택밸브와 이때의 붐 작동용 메인 유압공급을 위하여 방향절환밸브 및 이의 밸브전환을 위한 파일럿 유압공급용 셔틀밸브를 추가 설치한 것으로 그 요지를 첨부도면에 의하여 상세히 설명하면 다음과 같다.However, to eliminate this conventional drawback of the present invention First of all, the hydraulic circuit of the wheel loader's working device In case of operation, if necessary, an additional selection valve for changing the parallel circuit that can operate the boom and a directional control valve for the main hydraulic supply for boom operation and a pilot hydraulic supply shuttle valve for switching the valve are installed. When the summary is described in detail by the accompanying drawings as follows.

휠로우더의 작업장치 유압회로에 있어서, 버과 붐의 단독작동만이 가능한 단독 조작회로와 버과 붐의 동시조작이 가능한 동시조작 회로의 사이에 솔레노이드밸브 구조의 선택밸브(13)을 설치하며 패럴렐 회로로 변경될 때 붐작동용 메인 유압공급을 위한 방향절환밸브(14) 및 이들밸브절환을 위한 파일럿 유압공급용 셔틀밸브(15)를 추가 설치한 구조이며 그 상세설명은 다음과 같다.In the hydraulic device of the working device of the wheel loader, the burr Solenoid operation circuit and burr The solenoid valve structure selector valve 13 is installed between the synchronous control circuit capable of simultaneous operation of the boom and the boom, and the directional valve 14 for main hydraulic supply for boom operation when switching to the parallel circuit and these valve switching Pilot hydraulic supply shuttle valve 15 for the additional structure is installed and the details are as follows.

제1도는 본 고안의 회로도인바 엔진으로 구동되는 메인유압펌프(1)와 파이럿펌프(2)가 유압탱크(12)에 배관되고 유압펌프(1)의 토출관은 메인컨롤밸브(3)내에 버스풀(5)과 붐스풀(6)에 연결되어 각기 버실린더(8)와 붐실린더(7)을 작동시키게 배관되어 있다. 그리고 파일럿펌프(2)에서 리모트컨트롤밸브(10)에 연결되어 있으며, 상기한 버스풀(5)과 붐스풀(6)이 리모트컨트를밸브(10)에 연결되어 있다.1 is a circuit diagram of the present invention, the main hydraulic pump (1) and the pilot pump (2) driven by the engine is piped to the hydraulic tank 12, the discharge pipe of the hydraulic pump (1) is a burr in the main control valve (3) Connected to spool (5) and boom spool (6) It is piped to operate the cylinder 8 and the boom cylinder 7. And connected to the remote control valve 10 in the pilot pump (2), the bur The spool 5 and the boom spool 6 are connected to the remote control valve 10.

그리고 버스풀(5), 붐스풀(6) 및 리모트컨트롤밸브(10)는 리턴필터(11)을 경유 유압탱크(12)에 리턴되게 배관되어 있다.And burr The spool 5, the boom spool 6, and the remote control valve 10 are piped so that the return filter 11 is returned to the diesel hydraulic tank 12.

그리고, 상기한 메인컨트롤밸브(3)에 선택블브(13)와 방향절환밸브(14)가 연결되고 방향절환밸브(14)에서 셔틀밸브(15)에 연결되며 이 셔틀밸브(15)는 다시 리모컨트롤밸브(10)에 연결된 회로구성으로 되어있다.In addition, the selection valve 13 and the direction switching valve 14 are connected to the main control valve 3, and the shuttle valve 15 is connected to the shuttle valve 15 from the direction switching valve 14. It is a circuit structure connected to the control valve (10).

도면중 미설명부호 (4)는 메인릴리프밸브, (16∼24)는 메인유압관로, (25∼32)는 파일럿 유압관로이다.In the figure, reference numeral 4 denotes a main relief valve, 16 to 24 are main hydraulic pipes, and 25 to 32 are pilot hydraulic pipes.

이와 같이된 본 고안은 엔진으로 구동되는 메인유압펌프(1)에 의하여 유압탱크(12)로부터 토출되는 메인오일은 리모트컨트롤밸브(10)을 조작하지 않으면 관로(16) 및 (22)를 따라 리턴필터(11)을 거쳐 그대로 탱크(12)로 귀환되지만, 리모콘큰트롤밸브(10)을 만약 좌 또는 우방향으로 조작시키면 파일럿펌프(2)에 의하여 토출되는 파일럿 오일이 관로(25)를 거쳐 파일럿 릴리프밸브(9)의 셋팅 압력이하의 압력으로 리모트컨트롤밸브(10)을 통하고 관로(26) 혹은 (27)을 통하여 메인컨트롤밸브(3)내에 버스풀(5)를 좌 또는 우로 밀어 붙이게 되므로써 펌프(1)로부터 토출되는 메인오일은 탱크로 귀환하지 않고 관로(17)을 통하고 열려진 메인컨트롤밸브(3)의 버켄용 블록을 지나 관로(19) 혹은 (18)을 흘러 지나서 버실린더(8)을 작동시키게 되어 버이 롤백 혹은 덤프되게 한다.The present invention as described above, the main oil discharged from the hydraulic tank 12 by the main hydraulic pump (1) driven by the engine is returned along the pipelines (16) and (22) unless the remote control valve 10 is operated. Although it is returned to the tank 12 through the filter 11 as it is, if the remote control big control valve 10 is operated in the left or right direction, the pilot oil discharged by the pilot pump 2 is piloted through the pipeline 25. The pressure in the main control valve (3) through the remote control valve (10) and the conduit (26) or (27) at a pressure below the set pressure of the relief valve (9). The main oil discharged from the pump (1) by pushing the spool (5) to the left or the right is not returned to the tank, but through the pipe (17) and through the buckling block of the open main control valve (3). Or burr past (18) To operate the cylinder (8) Causes this rollback or dump.

한편, 리모트컨트롤밸브(10)을 시계방향으로 0°, 90°, 180°, 270°가 아닌 시계방향 45°, 135°, 225°, 315°등 전·후·좌·우 4방향의 중간방향 혹은 점 4방향이 아닌 방향으로 조작함과 동시에 선택밸브(13)을 조작하면 버의 작동과 동시에 붐의 작동도 가능하게 된다.On the other hand, the remote control valve 10 is clockwise, not 0 °, 90 °, 180 °, 270 °, but clockwise 45 °, 135 °, 225 °, 315 °, etc. In the direction other than the direction or point 4, and the selector valve 13 is operated. The operation of the boom is also possible at the same time.

즉, 선택밸브(13)을 조작시킨 상태에서 리모트컨트롤밸브(10)을 시계방향 315°로 만약 밀게되면 파일럿펌프(2)로부터 토출되는 오일이 배관(26)을 통하여 버켓스플(5)를 좌측으로 밀게 되므로써 메인유압오일펌프(2)로부터 토출되는 메인오일이 관로(17) 및 MCV의 열려진 버용 블록을 따라 관로(19)를 통하여 버실린더(8)의 피스턴을 밀어 올리게되어 덤프되어 있던 버을 롤백시키게 되고, 동시에 파일럿펌프(2)로 부터의 파일럿 오일이 붐하강 파일럿배관(28)을 통하여 붐스풀(6)을 우측으로 이동시킴과 함께 배관(28)에 추가 연결된 배관(30)을 통과하고 추가된 셔틀밸브(15)를 통과하여 방향절환밸브(14)를 조작시킴에 따라 붐 동시조작용 메인관로가 열리게 되어 메인펌프(1)로부터 토출되는 오일이 메인관로(17)에 추가연결된 관로(23)을 따라 선택밸브(13) 및 방향절환밸브(14)를 흘러 지나서 관통(24)를 거치게 되고 이어서 파일럿 관로(28)로 부터의 파일럿오일에 의하여 열러진 메인컨트롤밸브(3)의 붐용 블록을 통과하여 관로(20)로 흘러 붐실린더(7)을 아래로 밀어내리게 되므로써 붐을 하강시키게 한다.That is, if the remote control valve 10 is pushed clockwise 315 ° while the selection valve 13 is operated, the oil discharged from the pilot pump 2 is left to the bucket sprocket 5 through the pipe 26. The main oil discharged from the main hydraulic oil pump (2) by being pushed to the Burr through conduit (19) along Burr that was dumped by pushing up piston of cylinder (8) And the pilot oil from the pilot pump (2) moves the boom spool (6) to the right through the boom lowering pilot pipe (28) and additionally connects the pipe (30) to the pipe (28). As the directional control valve 14 is operated by passing through the additional shuttle valve 15, the boom co-operating main pipe is opened so that the oil discharged from the main pump 1 is additionally connected to the main pipe 17. The boom for the main control valve (3) opened by the pilot oil from the pilot pipe (28) through the passage through the selector valve (13) and the directional valve (14) through (23) It passes through the block into the conduit 20 and pushes the boom cylinder 7 down so that the boom is lowered.

이와 같이 붐 혹은 버의 하나만을 각각 작동시킬수 있는 유압회로에 선택밸브(13), 방향절환밸브(14), 셔틀밸브(15) 및 배관등의 추가조합에 의하여 필요시에는 붐 및 버의 작동을 동시에 할수 있게된다.Like this boom or burr Boom and burr if necessary by additional combination of selector valve 13, directional valve 14, shuttle valve 15, and piping The operation of can be done at the same time.

이상에서와 같이 본 고안은 휠로우더의 작동을 작업종류나 운전자의 성향에 맞추어 붐 및 버의 작동을 각각 혹은 필요시에는 동시에 행할 수가 있게 되므로 작업능률 향상은 물론 장비 1대로써 운전자의 각기 다른 요구에 부응할수 있는 2개의 특성을 가지게 되는 효과가 있음으로 작업자의 작업능률을 향상시키는 중장비의 고급화에 기여하는 것이다.As described above, the present invention is adapted to the operation of the wheel loader according to the type of work or the driver's tendency of the boom and burr. Can be operated individually or simultaneously, if necessary, so as not only to improve the work efficiency but also to have two characteristics that can meet the different needs of the driver as a single machine. It is contributing to the upgrading.

Claims (1)

엔진으로 구동되는 메인유압펌프(1)와 파일럿펌프(2)가 유압탱크(12)에 배관되고 유압펌프(1)의 토출관은 에인컨트롤밸브(3)내의 버켙스풀(5)과 붐스풀(6)에 연결되어 각기 버켙실린더(8)와 붐실린더(7)을 작동시키게 배관되며 파일럿펌프(2)에서 리모트컨트롤밸브(10)에 연결되고, 버켙스풀(5)과 붐스풀(6)이 리모트컨트롤밸브(10)에 연결되며 버켙스풀(5), 붐스풀(6) 및 리모트컨트롤밸브(10)는 리턴필터(11)을 경유, 유압탱크(12)에 리턴되게 배관된 휠로우더 작업장치의 유압회로에 있어서, 상기한 메인컨트롤밸브(3)에 선택밸브(13)와 방향질환밸브(14)가 연결되고, 방향절환밸브(14)에서 셔틀밸브(15)에 연결되며 이 셔틀밸브(15)는 다시 리모트컨트롤밸브(10)에 연결된 것을 특징으로 하는 토건중장비인 휠로우더의 작업장치의 단독 및 동시 조작용 유압회로.The main hydraulic pump (1) and the pilot pump (2) driven by the engine are piped to the hydraulic tank (12), and the discharge pipe of the hydraulic pump (1) has a spool pool (5) and a boom pool (in the control valve (3)). 6) is connected to each of the cylinder cylinder (8) and the boom cylinder (7) to be connected to the remote control valve (10) in the pilot pump (2), the spool pool (5) and boom pool (6) Wheel loader work device connected to the remote control valve (10), the spool spool (5), boom spool (6) and the remote control valve 10 is piped to return to the hydraulic tank (12) via the return filter (11) In the hydraulic circuit of the valve, the selection valve 13 and the directional valve 14 is connected to the main control valve (3), the directional valve 14 is connected to the shuttle valve 15 and the shuttle valve ( 15) is a hydraulic circuit for the sole and simultaneous operation of the work device of the wheel loader, which is a heavy construction equipment, characterized in that connected to the remote control valve (10) again.
KR2019930007948U 1993-05-13 1993-05-13 Hydraulic circuit for handling dependently or independently wheel rotor of civil engineering equipments KR960002911Y1 (en)

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KR2019930007948U KR960002911Y1 (en) 1993-05-13 1993-05-13 Hydraulic circuit for handling dependently or independently wheel rotor of civil engineering equipments

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KR2019930007948U KR960002911Y1 (en) 1993-05-13 1993-05-13 Hydraulic circuit for handling dependently or independently wheel rotor of civil engineering equipments

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KR940027070U KR940027070U (en) 1994-12-09
KR960002911Y1 true KR960002911Y1 (en) 1996-04-09

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KR100594856B1 (en) * 2005-03-08 2006-06-30 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 Join hydraulic system of enabling double controll

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