KR200398715Y1 - remote control valve assembly for a heavy equipment - Google Patents

remote control valve assembly for a heavy equipment Download PDF

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Publication number
KR200398715Y1
KR200398715Y1 KR20-1999-0012337U KR19990012337U KR200398715Y1 KR 200398715 Y1 KR200398715 Y1 KR 200398715Y1 KR 19990012337 U KR19990012337 U KR 19990012337U KR 200398715 Y1 KR200398715 Y1 KR 200398715Y1
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South Korea
Prior art keywords
remote control
control valve
signal pressure
discharge line
pilot signal
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KR20-1999-0012337U
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Korean (ko)
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KR20010001831U (en
Inventor
한승규
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두산인프라코어 주식회사
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Priority to KR20-1999-0012337U priority Critical patent/KR200398715Y1/en
Publication of KR20010001831U publication Critical patent/KR20010001831U/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00Actuating devices; Operating means; Releasing devices
    • F16K31/44Mechanical actuating means
    • F16K31/46Mechanical actuating means for remote operation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60YINDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00Type of vehicle
    • B60Y2200/40Special vehicles
    • B60Y2200/41Construction vehicles, e.g. graders, excavators
    • B60Y2200/412Excavators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00Actuating devices; Operating means; Releasing devices
    • F16K31/44Mechanical actuating means
    • F16K31/60Handles
    • F16K31/602Pivoting levers, e.g. single-sided

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Servomotors (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Mechanically-Actuated Valves (AREA)

Abstract

본 고안은 중장비의 리모트 콘트롤밸브에 관한 것으로, 특히 밸브몸체에 설치된 복수개의 메인스풀(10)이 조이스틱레버에 의해 가압되는 푸시로드(12)에 의해 각각 선택적으로 눌려져 하강하하였을 때 보조펌프측의 공급라인(13)과 제1배출라인(14)을 연통시키는 제1유로(15)를 가지고,아울러 그 위치에서 상기 보조 펌프측 공급라인(13)과 제2 배출라인(16)을 서로 연통시키는 제2유로(17)를 더 구비한 구조로 되어 있다. 따라서 본 고안은 리모트 콘트롤밸브의 메인스풀(10)이 하강하여 제1파이롯신호압을 형성시킬 때, 이와 동시에 그 위치에서 메인스풀에 형성된 제2유로(17)가 보조펌프측의 유압실린더 홀딩 밸브 해제신호압력 등과 같은 제2 파이롯신호압을 발생시키도록 된 것이다.The present invention relates to a remote control valve of heavy equipment, and in particular, when the plurality of main spools 10 installed on the valve body are selectively pressed and lowered by the push rods 12 respectively pressed by the joystick levers, A first flow passage 15 which communicates the supply line 13 and the first discharge line 14 with the auxiliary pump side supply line 13 and the second discharge line 16 in communication therewith, It has a structure provided with the 2nd flow path 17 further. Therefore, the present invention, when the main spool 10 of the remote control valve is lowered to form the first pilot signal pressure, at the same time the second flow path 17 formed in the main spool at the position is the hydraulic cylinder holding of the auxiliary pump side The second pilot signal pressure such as the valve release signal pressure and the like is generated.

Description

중장비의 리모트 콘트롤밸브 { remote control valve assembly for a heavy equipment}Remote control valve assembly for a heavy equipment

본 고안은 굴삭기 또는 로더 등과 같은 건설중장비의 엑츄에이터를 작동시키는 데 사용되는 리모트 콘트롤밸브에 관한 것으로, 특히 스풀이 작동하여 제1 파이롯신호압을 발생시킬 때, 이와 동시에 별도의 제2 파이롯 신호압을 발생시키도록 된 리모트 콘트롤밸브에 관한 것이다.The present invention relates to a remote control valve used to operate an actuator of a heavy construction equipment such as an excavator or a loader. In particular, when the spool is operated to generate a first pilot signal pressure, at the same time, a separate second pilot signal The present invention relates to a remote control valve configured to generate pressure.

종래 굴삭기나 로더 등에서 엑츄에이터를 작동시키는 데 사용되는 리모트 콘트롤밸브는, 조작레버를 조작하여 그 밸브에 설치된 복수개의 스풀을 선택적으로 눌러주면, 이 해당 스풀은 이동하면서 입구포트와 출구포트를 선택적으로 연통시키거나 차단하여 파이롯압유을 송출하게 된다. 그리고, 이들 각 출구포트를 통하여 송출되는 파이롯압유들은 셔틀밸브를 통하여 선택된 다음, 특정 엑츄에이터 작동용파이롯 신호압으로 사용되게 된다.Conventionally, a remote control valve used to operate an actuator in an excavator or loader, when a plurality of spools installed on the valve are selectively operated by operating an operation lever, the spool moves and selectively communicates an inlet port and an outlet port. The pilot pressure oil is sent out by blocking or blocking. Then, the pilot pressure oils sent out through each of these outlet ports are selected through the shuttle valve, and then used as a pilot signal pressure for a specific actuator operation.

즉 도 2에 도시된 바와 같이, 4개의 스풀(40)이 조작레버에 의해 가압되는 푸시로드(41)에 의해 각각 선택적으로 눌려져 승강하면서 보조펌프(P)측의 공급라인(42)과 배출라인(43)을 선택적으로 연통시키거나 차단하여 파이롯압유를 엑츄에이터 제어용 콘트롤밸브의 특정 제어스풀(도시안됨)로 선택적으로 공급하게 되어 있고, 각 스풀(40)의 배출라인(43)들은 셔틀밸브(44,45)로 연결되어 스풀(40)의 출구포트를 통하여 송출되는 압유가 상기 셔틀밸브(44,45)에 의해 선택되어 선회 모터 브레이크의 해제 신호압력,유압실린더 홀딩 밸브 해제신호압력 등과 같은 제2 파이롯신호압으로 사용되게 되어 있다.That is, as shown in Figure 2, the four spools (40) are selectively pushed up and down by the push rod 41 is pressed by the operating lever, respectively, while the supply line 42 and the discharge line of the auxiliary pump (P) side By selectively communicating or blocking (43) to selectively supply the pilot pressure oil to a specific control spool (not shown) of the control valve for actuator control, the discharge line 43 of each spool 40 is a shuttle valve ( The hydraulic oil connected to the 44,45 and discharged through the outlet port of the spool 40 is selected by the shuttle valves 44,45, and the like, such as the release signal pressure of the swing motor brake, the hydraulic cylinder holding valve release signal pressure, and the like. 2 It is to be used as pilot signal pressure.

그런데 상기 종래의 리모트콘트롤밸브는 상기한 바와 같이 제2 파이롯신호압을 발생시키기 위해서 셔틀밸브(44,45)가 설치된 별도의 셔틀밸브블록(46)을 연결설치하여야 하므로, 상기 셔틀밸브블록을 제작하는 데 소요되는 추가비용이 발생하고, 이 셔틀밸브블록과 리모트 콘트롤밸브를 서로 연결하기 위한 배관등이 필요하여 구조가 복잡하다는 단점이 있었다.However, since the conventional remote control valve needs to connect and install a separate shuttle valve block 46 in which the shuttle valves 44 and 45 are installed in order to generate the second pilot signal pressure as described above, There is an additional cost to manufacture, and there is a disadvantage that the structure is complicated because the piping for connecting the shuttle valve block and the remote control valve is required.

이에 본 고안은 셔틀밸브와 같은 별도의 추가부품을 사용하지 않고 리모트 콘트롤밸브의 스풀의 동작에 따라 제2 파이롯신호압을 발생시키는 간단한 구조의 중장비의 리모트 콘트롤밸브를 제공함에 목적이 있다. Accordingly, an object of the present invention is to provide a remote control valve of a heavy equipment having a simple structure that generates a second pilot signal pressure according to the operation of the spool of the remote control valve without using an additional component such as a shuttle valve.

상기 목적을 달성하기 위한 본 고안은 밸브몸체에 설치된 복수개의 메인스풀이 조이스틱레버에 의해 가압되는 푸시로드에 의해 각각 선택적으로 눌려져 하강하하였을 때 보조펌프측의 공급라인과 제1배출라인을 연통시키는 제1유로를 가지고,아울러 상기 보조 펌프측 공급라인과 제2 배출라인을 서로 연통시키는 제2유로를 더 구비한 구조에 특징이 있다.The present invention for achieving the above object is to communicate the supply line and the first discharge line of the auxiliary pump side when the plurality of main spools installed on the valve body is selectively pressed down by the push rod pressed by the joystick lever, respectively. It has a first flow path, as well as a structure further comprising a second flow path for communicating the auxiliary pump side supply line and the second discharge line with each other.

따라서 본 고안은 리모트 콘트롤밸브의 메인스풀이 하강하여 그 스풀에 형성된 제1유로가 보조펌프측의 공급라인과 제1배출라인을 연통시켜 제1파이롯신호압을 형성시키고, 이와 동시에 그 위치에서 메인스풀에 형성된 제2유로가 보조펌프측의 유압실린더 홀딩 밸브 해제신호압력 등과 같은 제2 파이롯신호압을 발생시키므로 ,셔틀밸브 ,셔틀밸브블록 및 리모트 콘트롤밸브측과 연결하기 위한 배관을 필요로 하는 종래의 리모트 콘트롤밸브에 비하여 구조가 간단하여 제조단가가 낮고, 보수 유지가 간편한 장점을 가진다.Therefore, the present invention, the main spool of the remote control valve is lowered and the first flow path formed in the spool communicates the supply line and the first discharge line of the auxiliary pump side to form the first pilot signal pressure, and at the same time Since the second flow path formed in the main spool generates a second pilot signal pressure, such as the hydraulic cylinder holding valve release signal pressure on the auxiliary pump side, piping for connection with the shuttle valve, shuttle valve block and remote control valve side is required. Compared with the conventional remote control valve, the structure is simple, the manufacturing cost is low, maintenance has the advantage of easy maintenance.

이하 본 고안의 실시예를 첨부도면에 따라 상세히 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 고안의 제1실시예에 따른 리모트 콘트롤밸브의 개략적인 유압회로도이다.1 is a schematic hydraulic circuit diagram of a remote control valve according to a first embodiment of the present invention.

상기 도 1에 도시된 바와 같이, 본 고안의 제1실시예에 따른 리모트 콘트롤밸브는 4개의 메인스풀(10)이 구비되고, 이들 각 메인스풀(10)은 메인스프링(11)에 의해 탄력적으로 지지된 푸시로드(12)의 하단과 맞닿아 있다. 그리고 상기 각 메인스풀(10)은 하강위치(Y)에서 보조펌프측의 공급라인(13)과 제1배출라인(14)를 서로 연통시키는 제1 유로(15) 및, 상기 보조펌프측의 공급라인(13)과 제2배출라인(16)를 서로 연통시키는 제2 유로(17)를 구비하고 있고, 상승위치(X)에서는 상기 공급라인(13)을 제1배출라인(14) 및 제2배출라인(16)과는 차단하는 동시에 상기 제1배출라인(14)을 탱크(T)에 연통시키게 된다. As shown in Figure 1, the remote control valve according to the first embodiment of the present invention is provided with four main spools 10, each of these main spools 10 are elastically by the main spring (11) It is in contact with the lower end of the supported push rod 12. Each of the main spools 10 has a first flow path 15 for communicating the supply line 13 and the first discharge line 14 on the auxiliary pump side with each other at the lowered position Y, and the supply on the auxiliary pump side. And a second flow path 17 which communicates the line 13 and the second discharge line 16 with each other. In the raised position X, the supply line 13 is connected to the first discharge line 14 and the second discharge line. The first discharge line 14 is communicated with the tank T while being blocked from the discharge line 16.

따라서 조작레버(도시안됨)로 상기 푸시로드(12)들을 선택적으로 눌러주면 상기 푸시로드(12)에 의해 눌려져 하강위치(Y)로 하강한 메인스풀(10)은 제1유로(15)와 제2유로(17)를 동시에 개방하여 보조펌프(P)에서 공급라인(13)을 통하여 공급되는 압유를 제1배출라인(14) 및 제2배출라인(16)을 통하여 동시에 배출함으로서 제1파이롯신압 및 제2파이롯신호압을 동시에 발생시키게 되는 것이다.Accordingly, when the push rods 12 are selectively pressed by the operation lever (not shown), the main spool 10 pressed by the push rods 12 and lowered to the lowering position Y may be formed of the first passage 15 and the first passage 15. The first pilot by simultaneously opening the two flow paths 17 to simultaneously discharge the pressurized oil supplied from the auxiliary pump P through the supply line 13 through the first discharge line 14 and the second discharge line 16. The new pressure and the second pilot signal pressure are generated at the same time.

이상과 같이 본 고안에 따른 중장비 리모트 콘트롤밸브는 셔틀밸브 조립체와 같은 별도의 부품없이도 제1 파이롯신호압 및 제2 파이롯신호압을 동시에 발생시키게 되어 있어, 부품수를 감소시키고, 구조를 간단히 하여 조립공수를 줄임으로써 원가절감은 물론 보수 유지에 편리한 장점이 있는 것이다.As described above, the heavy-duty remote control valve according to the present invention generates the first pilot signal pressure and the second pilot signal pressure simultaneously without separate parts such as a shuttle valve assembly, thereby reducing the number of parts and simplifying the structure. By reducing the number of assembly work, there is a convenient cost saving and maintenance.

도 1 은 본 고안에 따른 리모트 콘트롤밸브의 개략적인 유압회로도,1 is a schematic hydraulic circuit diagram of a remote control valve according to the present invention,

도 2 은 종래 일반적인 리모트 콘트롤밸브의 개략적인 유압회로도이다.2 is a schematic hydraulic circuit diagram of a conventional general remote control valve.

※ 도면의 주요부분에 대한 부호의 설명 ※※ Explanation of code about main part of drawing ※

10: 메인스풀 11: 메인스프링10: main spool 11: main spring

12: 푸시로드 13: 공급라인12: Push Rod 13: Supply Line

14: 제1배출라인 15: 제1유로14: first discharge line 15: first euro

34: 보조스풀34: auxiliary spool

Claims (1)

각각 메인스프링(11)으로 탄력지지된 복수개의 메인스풀(10)과, 각 메인스풀(10)을 눌러주는 푸시로드(12)를 구비하여 상기 푸시로드(12)를 통하여 상기 메인스풀(10)을 선택적으로 눌러줌에 따라 상기 메인스풀(10)의 제1유로(15)가 보조펌프(P)의 공급라인(13)과 제1배출라인(14)을 서로 연통시켜 제1 파이롯신호압을 발생시키는 중장비의 리모트 콘트롤밸브에 있어서,The main spool 10 is provided with a plurality of main spools 10 elastically supported by the main springs 11 and push rods 12 for pressing the main spools 10, respectively. As the pressure is selectively pressed, the first flow path 15 of the main spool 10 communicates the supply line 13 and the first discharge line 14 of the auxiliary pump P to each other so that the first pilot signal pressure is reduced. In the remote control valve of heavy equipment for generating 상기 메인스풀(10)에는 상기 제1배출라인(14)을 통하여 제1파이롯신호압을 발생시키기 위하여 상기 제1유로(15)가 상기 보조펌프의 공급라인(13)과 제1배출라인(14)을 서로 연통시키는 위치에서, 상기 제1파이롯신호압에서 제2파이롯신호압이 분류되게 상기 보조펌프의 공급라인(13)과 상기 복수개의 메인스풀(10)의 제2배출라인(16)끼리 서로 합류되도록 형성된 제2배출라인(16)을 서로 연통시키는 제2유로(17)를 더 구비한 것을 특징으로 하는 중장비의 리모트 콘트롤밸브.In the main spool 10, the first flow path 15 supplies a supply line 13 and a first discharge line of the auxiliary pump to generate a first pilot signal pressure through the first discharge line 14. 14, the supply line 13 of the auxiliary pump and the second discharge line of the plurality of main spools 10 so that the second pilot signal pressure is classified in the first pilot signal pressure. 16) The remote control valve of the heavy equipment, characterized in that it further comprises a second passage (17) for communicating with each other the second discharge line (16) formed to be joined to each other.
KR20-1999-0012337U 1999-06-30 1999-06-30 remote control valve assembly for a heavy equipment KR200398715Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR20-1999-0012337U KR200398715Y1 (en) 1999-06-30 1999-06-30 remote control valve assembly for a heavy equipment

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KR20-1999-0012337U KR200398715Y1 (en) 1999-06-30 1999-06-30 remote control valve assembly for a heavy equipment

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KR100953794B1 (en) * 2002-12-16 2010-04-21 두산인프라코어 주식회사 Apparatus for generating secondary signal in remote control valve of heavy construction equipment

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