KR20020008518A - The hydraulic control valre of oil-hydraulic cluthch for ship - Google Patents

The hydraulic control valre of oil-hydraulic cluthch for ship Download PDF

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Publication number
KR20020008518A
KR20020008518A KR1020000041753A KR20000041753A KR20020008518A KR 20020008518 A KR20020008518 A KR 20020008518A KR 1020000041753 A KR1020000041753 A KR 1020000041753A KR 20000041753 A KR20000041753 A KR 20000041753A KR 20020008518 A KR20020008518 A KR 20020008518A
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South Korea
Prior art keywords
hydraulic
spring
hydraulic pressure
clutch
pressure
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KR1020000041753A
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Korean (ko)
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KR100356334B1 (en
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강성찬
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강성찬
김춘자
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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
    • F16K31/12Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/122Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
    • F16K31/1221Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being spring-loaded
    • 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
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00Fluid-actuated clutches
    • F16D25/06Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch
    • 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
    • F16K13/00Other constructional types of cut-off apparatus; Arrangements for cutting-off
    • F16K13/02Other constructional types of cut-off apparatus; Arrangements for cutting-off with both sealing faces shaped as small segments of a cylinder and the moving member pivotally mounted
    • 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
    • F16K27/00Construction of housing; Use of materials therefor
    • F16K27/02Construction of housing; Use of materials therefor of lift valves
    • 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
    • F16K47/00Means in valves for absorbing fluid energy
    • F16K47/02Means in valves for absorbing fluid energy for preventing water-hammer or noise

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)

Abstract

PURPOSE: An oil pressure control valve of a hydraulic clutch for a ship is provided to apply a high oil pressure to the hydraulic clutch in an instant for transmitting power 100%, thereby carrying out the power transmission in a short time without any impact sound. CONSTITUTION: An oil pressure control valve of a hydraulic clutch for a ship includes a restoring spring(32) mounted in a spring(27) to be compressed by the strength of an oil pressure for restoring a hydraulic control piston(25) to an initial position, the restoring spring being mounted to the hydraulic control piston at an end of, the hydraulic control piston being formed with an oil pressure discharging groove(26) at a side penetratingly for discharging a hydraulic pressure partially, and a spring cap(31) contacting the hydraulic control piston which is withdrawing for blocking off the oil pressure discharging hole as an oil pressure at a front end of the spring is increased to an oil pressure required for power transmission of a clutch.

Description

선박용 유압클러치의 유압조절밸브{The hydraulic control valre of oil-hydraulic cluthch for ship}The hydraulic control valve of oil-hydraulic cluthch for ship

본 발명은 선박용 유압클러치의 유압조절밸브에 관한 것으로서, 특히 동력을유압클러치를 통해 스크루 구동축에 전달하기 위해 유압을 유압클러치로 공급할 때 일부의 유압을 유압방출홀로 방출시켜 반클러치상태로 구동축을 일단 회전시켜준 다음 유압방출홀을 차단시켜 정압의 유압을 순간적으로 유압클러치에 전달하여 100%의 동력을 전달하도록 하므로써 신속하면서도 충격음 없이 부드럽게 동력이 전달되도록 하는 선박용 유압클러치의 유압조절밸브에 관한 것이다.The present invention relates to a hydraulic control valve of a marine hydraulic clutch, and in particular, when supplying hydraulic pressure to the hydraulic clutch in order to transmit power to the screw drive shaft through the hydraulic clutch, some of the hydraulic pressure is discharged into the hydraulic discharge hole to release the driving shaft once in a half clutch state. The present invention relates to a hydraulic control valve of a marine hydraulic clutch that allows power to be transmitted quickly and smoothly without impact noise by transmitting a 100% power by instantaneously delivering a hydraulic pressure of static pressure to the hydraulic clutch by blocking the hydraulic discharge hole after rotation.

일반적으로 선박용 유압클러치는 도 1에서와 같이 전진 유압클러치(10)와 후진 유압클러치(11)가 별도로 구성되고 일측에 20∼25kg의 유압을 선택적으로 걸어주는 유압조절밸브(12)가 설치되어 있다.In general, the hydraulic clutch for ships is composed of a forward hydraulic clutch (10) and a reverse hydraulic clutch (11) separately as shown in Figure 1 and is provided with a hydraulic control valve 12 for selectively applying 20 to 25kg of hydraulic pressure on one side. .

즉, 유압조절밸브(12)는 하우징(13)의 내부에 유압 유압조절피스톤(14)이 설치되어 과도한 유압이 발생하게 되면 스프링(15)을 압축시키면서 후퇴하여 릴리프홀(18)을 통해 유압을 흘려보내 일정한 유압만 공급할 수 있도록 되어 있고, 유입된 유압을 전진 또는 후진 유압클러치(10)(11)에 선택적으로 공급해주는 유압전환밸브(16)가 구성되어 전진시에는 레버(17)를 하강시켜 전진 유압클러치(10)로, 후진 시에는 레버(17)를 승강시켜 후진 유압클러치(11)로 유압을 전달해 주도록 되어 있다.That is, the hydraulic control valve 12 is installed in the housing 13, the hydraulic pressure adjustment piston 14 is installed when excessive hydraulic pressure is generated while retracting while compressing the spring 15 to the hydraulic pressure through the relief hole 18 It is designed to supply only a certain amount of hydraulic pressure by flowing, and the hydraulic switching valve 16 for selectively supplying the introduced hydraulic pressure to the forward or reverse hydraulic clutch (10) (11) is configured to lower the lever (17) when moving forward With the forward hydraulic clutch 10, the lever 17 is moved up and down to transfer the hydraulic pressure to the reverse hydraulic clutch 11 at the time of reverse movement.

그러나 이러한 유압클러치를 사용하다보면 선박을 전·후로 이동하기 위해 정지해 있던 도면에 도시되지 않은 스크루 구동축을 회전시킬때 큰 충격음이 발생된다.However, when such a hydraulic clutch is used, a large impact sound is generated when the screw drive shaft, not shown in the figure, is stopped to move the vessel forward and backward.

이는 유압조절밸브(12)에서 전진 또는 후진 유압클러치(10)(11)로 갑자기 정압의 유압이 공급되어 정지해 있던 스크루 구동축을 갑자기 회전시키므로 충격음이발생된다. 도 3의 그래프의 ⓐ와 같이 짧은 시간내에 정압의 유압이 전진 또는 후진 유압클러치(10)(11)에 전달되어 그래프의 기울기가 가파르게 나타나고 있다.This suddenly rotates the screw drive shaft which is supplied with a constant pressure of hydraulic pressure from the hydraulic control valve 12 to the forward or backward hydraulic clutch 10 (11) suddenly, so that a shock sound is generated. As shown in the graph of FIG. 3, the hydraulic pressure of the positive pressure is transmitted to the forward or backward hydraulic clutches 10 and 11 within a short time, and the slope of the graph is steep.

이는 스크루 구동축이 부러지거나 파손되는 경우도 종종 발생되며 기계의 수명을 단축시키게 된다.This often occurs when the screw drive shaft is broken or broken and shortens the life of the machine.

이러한 현상을 방지하기 위해 유압을 유압조절밸브(12)가 유압클러치(10)(11)에 천천히 공급시켜 동력이 서서히 전달되도록 한 것이 있다. 도 3의 그래프ⓑ에서 알 수 있듯이 완만한 기울기를 나타내고 있으며, 동력이 100%전달되기까지는 대략 2∼3초정도가 소요된다.In order to prevent such a phenomenon, the hydraulic pressure regulating valve 12 is slowly supplied to the hydraulic clutches 10 and 11 so that power is gradually transmitted. As shown in graph ⓑ of Figure 3 shows a gentle slope, it takes about 2 to 3 seconds before the power is transferred to 100%.

하지만 이러한 유압조절밸브는 유압클러치(10)(11)가 스크루 구동축에 동력을 전달할 때 충격음 없이 부드럽게 동력을 전달시킬 수는 있으나, 동력이 정상적으로 전달되기까지 너무 시간이 지체되는 단점이 있다. 특히 비상시 갑자기 출발해야 하거나 또는 급정거를 위해 스크루를 역으로 회전시켜야 할 급박한 상황에서도 대략 2∼3초 가량 소요되기 때문에 위험을 피할 수가 없게 되는 단점이 있었다.However, such a hydraulic control valve, but the hydraulic clutch (10) (11) can transmit the power smoothly without impact sound when transmitting power to the screw drive shaft, there is a disadvantage that too time is delayed until the power is normally delivered. Particularly, even in an emergency situation where a sudden start or a screw must be rotated in reverse for sudden stop, it takes about 2 to 3 seconds, so there is a disadvantage that the danger cannot be avoided.

본 발명은 종래의 단점을 해소하기 위해 창안한 것으로, 그 목적은 유압을 유압클러치로 공급할 때 일부의 유압을 유압방출홀로 방출시켜 반클러치상태로 구동축을 일단 회전시켜준 다음 유압방출홀을 차단시켜 정압의 유압을 순간적으로 유압클러치에 전달하여 100%의 동력을 전달하도록 하므로써 신속하면서도 충격음 없이 동력이 전달되도록 하는 선박용 유압클러치의 유압조절밸브를 제공하는데 있다.The present invention was devised to solve the disadvantages of the prior art, the object of which is to discharge the hydraulic pressure to the hydraulic discharge hole when supplying the hydraulic pressure to the hydraulic clutch once rotates the drive shaft in a semi-clutch state and then shut off the hydraulic discharge hole It is to provide a hydraulic control valve of the hydraulic clutch for ships so that the power is transmitted quickly and without impact sound by transmitting the hydraulic pressure of the constant pressure to the hydraulic clutch at the moment.

도 1은 종래의 유압클러치의 구조를 나타낸 사시도.1 is a perspective view showing the structure of a conventional hydraulic clutch.

도 2a,2b는 종래의 유압조절밸브의 구조를 나타낸 단면도.Figure 2a, 2b is a cross-sectional view showing the structure of a conventional hydraulic control valve.

도 3은 종래의 유압클러치에 유압이 전달되는 상태를 나타낸 그래프.Figure 3 is a graph showing a state in which the hydraulic pressure is transmitted to the conventional hydraulic clutch.

도 4a,4b,4c는 본 발명의 유압조절밸브의 결합단면도.Figure 4a, 4b, 4c is a combined cross-sectional view of the hydraulic control valve of the present invention.

도 5는 본 발명의 유압클러치에 유압이 전달되는 상태를 나타낸 그래프.5 is a graph showing a state in which the hydraulic pressure is delivered to the hydraulic clutch of the present invention.

*** 도면의 주요 부분에 대한 부호의 설명 ****** Explanation of symbols for the main parts of the drawing ***

10,11 - 전·후진유압조절밸브 20 - 유압조절밸브 21 - 하우징10,11-Forward and reverse hydraulic control valve 20-Hydraulic control valve 21-Housing

23 - 유압전환밸브 24 - 공급홀 25 - 유압조절피스톤23-Hydraulic switching valve 24-Supply hole 25-Hydraulic adjustment piston

26 - 유압방출홀 27 - 스프링 28 - 유입구26-Hydraulic discharge hole 27-Spring 28-Inlet

29 - 릴리프홀 30 - 베어링 31 - 스프링캡29-relief hole 30-bearing 31-spring cap

32 - 복귀스프링32-return spring

상기 목적을 달성하기 위한 본 발명의 수단은, 하우징의 내부에 유압을 선택적으로 공급하는 유압전환밸브와, 유압의 세기에 따라 스프링을 압축시키면서 후퇴하여 유압을 릴리프홀로 배출시켜 적정한 유압을 갖도록 조절하는 유압조절피스톤과, 상기 유압조절피스톤이 설정된 압 이상의 유압이 작용할 때 수축하는 스프링을 구성한 유압조절밸브에 있어서,Means of the present invention for achieving the above object, the hydraulic switching valve for selectively supplying the hydraulic pressure in the interior of the housing, and retracting while compressing the spring according to the strength of the hydraulic pressure to discharge the hydraulic pressure to the relief hole to adjust to have a proper hydraulic pressure In the hydraulic control valve comprising a hydraulic control piston and a spring that contracts when the hydraulic pressure of the hydraulic control piston is set or more,

상기 스프링의 내측에 상기 유압조절피스톤을 복귀시키는 복귀스프링을 구비하고, 상기 복귀스프링의 단부에 상기 유압조절피스톤을 연결설치하고, 상기 유압조절피스톤의 일측에 일부의 유압을 방출하는 유압방출홀을 전후로 관통형성하고, 상기 스프링의 선단부에 유압이 클러치의 동력전달에 필요한 유압까지 증가하면 후퇴하는 유압조절피스톤의 후측면에 밀착되어 상기 유압방출홀을 차단하는 스프링캡이 설치되어 달성된다.A return spring for returning the hydraulic control piston to the inner side of the spring, connected to the hydraulic control piston at an end of the return spring, and a hydraulic discharge hole for discharging part of the hydraulic pressure to one side of the hydraulic control piston. Through and formed through the front and rear, and the hydraulic pressure is increased to the hydraulic pressure required for power transmission of the clutch to the front end of the spring is in close contact with the rear side of the hydraulic control piston to retract is achieved by installing a spring cap blocking the hydraulic discharge hole.

이하, 본 발명의 실시예를 첨부된 도면을 참조하여 상세히 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 4a,4b,4c는 본 발명의 유압조절밸브의 결합단면도이다.Figure 4a, 4b, 4c is a combined cross-sectional view of the hydraulic control valve of the present invention.

도시된 바와 같이 유압조절밸브(20)는 하우징(21)과, 그 내부에 유입되는 유압을 전·후진 유압클러치(10)(11)에 선택적으로 공급하는 유압전환밸브(23)가 설치되어 있고, 내부로 유입되는 유압의 세기에 따라 전·후진하는 유압조절피스톤(25)과, 상기 유압조절피스톤(25)의 후측에 설치되어 설정된 압 이상의 유압이 발생하게 되면 수축하는 스프링(27)이 구성되어 있다. 즉, 스프링(27)은 설정된 압력으로 이미 텐션이 조절되어 있는 것이다.As shown in the figure, the hydraulic control valve 20 is provided with a housing 21 and a hydraulic switching valve 23 for selectively supplying hydraulic pressure flowing therein to the forward and backward hydraulic clutches 10 and 11. The hydraulic adjustment piston 25 is moved forward and backward according to the strength of the hydraulic pressure flowing into the inside, and the spring 27 is contracted when the hydraulic pressure is set to be installed at the rear side of the hydraulic adjustment piston 25 or more. It is. That is, the spring 27 is already tensioned by the set pressure.

유압전환밸브(23)에는 전·후진 유압클러치(10)(11)로 유압을 공급하는 공급홀(24)이 형성되어 있으며, 유압조절피스톤(25)과 유압전환밸브(23)의 사이에는 도면에 도시되지 않은 유압발생장치로부터 유압이 유입되는 유입구(28)가 형성되어 있다.The hydraulic switching valve 23 is provided with a supply hole 24 for supplying hydraulic pressure to the forward and backward hydraulic clutches 10 and 11, and is provided between the hydraulic control piston 25 and the hydraulic switching valve 23. An inlet 28 through which the hydraulic pressure flows from the hydraulic generator not shown is formed.

또 하우징(21) 내로 유입되는 유압이 증가하여 유압조절피스톤(25)이 스프링(27)을 압축시키면서 후퇴할 때 일정깊이 이상 후퇴하게 되면 유압이 방출되는 릴리프홀(29)이 형성되어 있다. 참조번호 30은 유압전환밸브(23)의 회전작동이 용이하도록 하는 베이링이다.In addition, when the hydraulic pressure flowing into the housing 21 increases and the hydraulic adjustment piston 25 retracts while compressing the spring 27, the relief hole 29 is formed in which the hydraulic pressure is released. Reference numeral 30 is a bearing to facilitate the rotational operation of the hydraulic switching valve (23).

이러한 구조의 유압조절밸브(20)에 있어서, 유압조절피스톤(25)의 전후방에는 유압방출홀(26)이 형성되어 있다.In the hydraulic control valve 20 having such a structure, hydraulic discharge holes 26 are formed in front and rear of the hydraulic control piston 25.

또 유압조절피스톤(25)의 후측에는 두 개의 스프링이 설치되는데, 그 중 일측 스프링(27)은 전·후진 유압클러치(10)(11)가 완전하게 물려 동력이 전달될 때 가하여지는 유압을 견딜 수 있고 또 그 이상의 유압이 가하여지면 그때부터 수축하는 텐션을 가진 스프링(27)이다. 이 스프링(27)의 선단에는 스프링캡(31)이 설치되어 있다.In addition, two springs are installed at the rear side of the hydraulic adjustment piston 25, one of which spring 27 is to withstand the hydraulic pressure applied when the power is transmitted when the forward and backward hydraulic clutch 10 (11) is completely bitten. It is a spring 27 which has a tension that can be contracted from then when more hydraulic pressure is applied. A spring cap 31 is provided at the tip of this spring 27.

스프링캡(31)의 중앙부는 관통되어 이에 유압조절피스톤(25)을 복귀시키는 복귀스프링(32)이 설치되고, 복귀스프링(32)의 선단에는 유압조절피스톤(25)의 후단부가 연결되어 있으며, 유압조절밸브(20)내로 유압이 공급되기 시작해서 전·후진 유압클러치(10)(11)가 도면에 도시되지 않은 스크루 구동축을 반클러치상태로 회전시킬 수 있을 정도의 유압이 작용하면 유압조절피스톤(25)이 후퇴하여 도 4b와 같이 스프링캡(31)에 밀착되는 정도의 텐션을 가지고 있다.A return spring 32 for returning the hydraulic adjustment piston 25 is installed through the central portion of the spring cap 31, and a rear end of the hydraulic adjustment piston 25 is connected to the front end of the return spring 32. When the hydraulic pressure starts to be supplied into the hydraulic control valve 20 and the hydraulic pressure enough to rotate the screw drive shaft (not shown) in the forward and backward hydraulic clutches (10) and (11) in a half-clutch state is applied to the hydraulic control piston. As shown in FIG. 4B, the retractor 25 retracts and has a tension that is in close contact with the spring cap 31.

복귀스프링(32)은 스프링(27)보다 길이가 길어 유압조절피스톤(25)을 충분히 전방으로 복귀시킬 수 있는 길이를 가지고 있으며, 스프링(27)은 그 길이가 복귀스프링(32)보다 짧아 유압조절피스톤(25)이 후퇴하여 릴리프홀(29)이 개방되기 시작할 때 스프링(27)의 선단에 설치된 스프링캡(31)의 전면이 도 4b와 같이 유압조절피스톤(25)의 후측과 밀착되도록 되어 있다.The return spring 32 has a length longer than that of the spring 27 to sufficiently return the hydraulic adjustment piston 25 to the front, and the spring 27 has a length shorter than that of the return spring 32 to adjust hydraulic pressure. When the piston 25 is retracted and the relief hole 29 starts to open, the front surface of the spring cap 31 provided at the tip of the spring 27 comes into close contact with the rear side of the hydraulic control piston 25 as shown in FIG. 4B. .

이러한 구조로 되어 있는 본 발명의 작동상태를 살펴보면 다음과 같다.Looking at the operating state of the present invention having such a structure as follows.

도면에 도시되지 않은 선박의 스크루 구동축을 가동하기 위해 유압발생장치로부터 발생된 유압을 유압조절밸브(20)의 내부로 공급하게 되면 유압은 유입구(28)를 통해 유압조절피스톤(25)과 유압전환밸브(23)의 사이로 유입된다. 이때 유입되는 유압의 압력은 대략 20∼25kg정도이다.When supplying the hydraulic pressure generated from the hydraulic generator to the inside of the hydraulic control valve 20 to operate the screw drive shaft of the vessel not shown in the drawings, the hydraulic pressure is switched to the hydraulic control piston 25 and the hydraulic control via the inlet 28 It flows in between the valves 23. At this time, the pressure of the hydraulic pressure is approximately 20-25kg.

일단 유압이 유입되면 유압조절피스톤(25)과 유압전환밸브(23)의 사이에 높은 압이 발생하므로 유압조절피스톤(25)은 후퇴함과 아울러 유압전환밸브(23)의 유압공급홀(24)을 통해 전진 또는 후진 유압클러치(10)(11)로 전달된다. 이때 유입된 유압의 일부는 유압조절피스톤(25)의 유압방출홀(26)을 통해 방출되므로 약 10kg정도의 유압만 전진 또는 후진 유압클러치(10)(11)에 전달된다.Once the hydraulic pressure flows in, high pressure is generated between the hydraulic control piston 25 and the hydraulic switching valve 23, so that the hydraulic control piston 25 retracts and the hydraulic supply hole 24 of the hydraulic switching valve 23. Through the forward or backward hydraulic clutch (10) (11) is transmitted. At this time, part of the hydraulic pressure introduced is discharged through the hydraulic discharge hole 26 of the hydraulic control piston 25, so that only about 10 kg of hydraulic pressure is transmitted to the forward or backward hydraulic clutch 10 (11).

이 상태가 되면 유압클러치(10)(11)는 완전히 동력을 전달하지 못하고 슬립현상이 일어나 동력을 절반만 전달하는 상태가 되어 스크루 구동축은 유압이 공급되기 시작한 때부터 약 0.5초 동안 서서히 회전된다.In this state, the hydraulic clutches 10 and 11 do not transmit power completely, but slip state occurs and only half of the power is transmitted, and the screw drive shaft is gradually rotated for about 0.5 seconds from when the hydraulic pressure starts to be supplied.

한편, 유압조절피스톤(25)과 유압전환밸브(23)의 사이에는 점점 유압이 높아지기 때문에 유압조절피스톤(25)은 복귀스프링(32)을 압축시키면서 후퇴하기 시작한다.On the other hand, since the hydraulic pressure gradually increases between the hydraulic control piston 25 and the hydraulic switching valve 23, the hydraulic control piston 25 starts to retreat while compressing the return spring 32.

유압조절피스톤(25)이 후퇴하여 그 후측면이 스프링캡(31)의 전면과 밀착되면 유압방출홀(26)의 후단부가 막혀버리게 되어 유압의 방출작용이 정지된다. 이 시점은 유압이 공급되기 시작한 때부터 약 0.5초정도 걸리게 된다.When the hydraulic control piston 25 is retracted and its rear side is in close contact with the front surface of the spring cap 31, the rear end of the hydraulic discharge hole 26 is blocked, and the discharge of hydraulic pressure is stopped. This point takes about 0.5 seconds from when the hydraulic pressure starts to be supplied.

이 상태가 되면 방출되고 있던 유압이 전진 또는 후진 유압클러치(10)(11)에 갑자기 더해지기 때문에 도면에 도시되지 않은 유압클러치 내부의 마찰판이 슬립현상 없이 물리게 되어 동력을 100%전달하게 된다.In this state, the discharged hydraulic pressure is suddenly added to the forward or backward hydraulic clutches 10 and 11 so that the friction plate inside the hydraulic clutch, not shown in the figure, is bitten without slipping, thereby transferring power 100%.

이때 걸리는 시간은 도 5의 그래프에서와 같이 반클러치 상태에서 순간적으로 발생하기 때문에 수직에 가까운 기울기로 나타난다. 하지만 반클러치상태로 스크루 구동축이 일단 회전하고 있던 상태이기 때문에 종래와 같이 동력전달시 발생하는 충격음은 발생하지 않고 부드럽게 전달된다.At this time, since the time taken is instantaneously generated in the half-clutch state as shown in the graph of FIG. However, since the screw drive shaft is once rotated in the half-clutch state, the impact sound generated during power transmission as in the prior art is smoothly transmitted without being generated.

이 상태부터 유압이 더욱 높아지게 되면 유압조절피스톤이 도 4c와 같이 스프링(27)을 압축시켜 릴리프홀(29)을 통해 유압을 방출시켜 항상 일정한 압이 걸릴 수 있도록 해준다.When the hydraulic pressure is higher from this state, the hydraulic adjustment piston compresses the spring 27 as shown in FIG. 4c to release the hydraulic pressure through the relief hole 29 so that a constant pressure can be always applied.

이상에서 살펴본 바와 같이 본 발명은 유압을 유압클러치에 전달할 때 일부유압을 유압방출홀로 방출시켜 반클러치상태로 구동축을 일단 회전시켜준 다음 후퇴하는 유압조절피스톤이 스프링캡의 전면에 밀착되어 유압방출홀을 차단하므로써 순간적으로 고압의 유압을 유압클러치에 걸어주어 100%의 동력을 전달하도록 하여 신속하면서도 충격음 없이 부드럽게 동력이 전달되는 효과가 있다.As described above, in the present invention, when the hydraulic pressure is transmitted to the hydraulic clutch, the hydraulic pressure release piston releases some of the hydraulic pressure into the hydraulic discharge hole and rotates the drive shaft in a half-clutch state. By blocking the moment, high-pressure hydraulic pressure is applied to the hydraulic clutch to transmit 100% of power, so that power is transmitted quickly and smoothly without impact sound.

Claims (1)

하우징(21)의 내부에 유압을 선택적으로 공급하는 유압전환밸브(23)와, 유압의 세기에 따라 스프링(27)을 압축시키면서 후퇴하여 유압을 릴리프홀(29)로 배출시켜 적정한 유압을 갖도록 조절하는 유압조절피스톤(25)과, 상기 유압조절피스톤(25)이 설정된 압 이상의 유압이 작용할 때 수축되는 스프링(27)으로 구성된 유압조절밸브에 있어서,Hydraulic switching valve 23 for selectively supplying the hydraulic pressure in the housing 21, and retracting while compressing the spring 27 according to the strength of the hydraulic pressure to discharge the hydraulic pressure to the relief hole 29 to adjust to have a proper hydraulic pressure In the hydraulic control valve consisting of a hydraulic control piston 25, and a spring 27 that is contracted when the hydraulic pressure of the hydraulic pressure control piston 25 is set or more, 상기 스프링(27)의 내측에 상기 유압조절피스톤(25)을 복귀시키는 복귀스프링(32)을 구비하고,It is provided with a return spring (32) for returning the hydraulic adjustment piston (25) inside the spring (27), 상기 복귀스프링(32)의 단부에 상기 유압조절피스톤(25)을 연결설치하고,Connect the hydraulic adjustment piston 25 to the end of the return spring 32, 상기 유압조절피스톤(25)의 일측에 일부의 유압을 방출하는 유압방출홀(26)을 전후로 관통형성하고,Through and formed through the hydraulic discharge hole 26 for discharging a part of the hydraulic pressure on one side of the hydraulic control piston 25, 상기 스프링(27)의 선단부에 유압이 클러치의 동력전달에 필요한 유압까지 증가하면 후퇴하는 유압조절피스톤(25)의 후측면에 밀착되어 상기 유압방출홀(26)을 차단하는 스프링캡(31)을 설치한 것을 특징으로 하는 선박용 유압클러치의 유압조절밸브.When the hydraulic pressure at the front end of the spring 27 increases to the hydraulic pressure required for power transmission of the clutch, the spring cap 31 close to the rear side of the hydraulic control piston 25 to retreat to block the hydraulic discharge hole 26. Hydraulic control valve of the hydraulic clutch for ships, characterized in that installed.
KR1020000041753A 2000-07-20 2000-07-20 The hydraulic control valre of oil-hydraulic cluthch for ship KR100356334B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020088266A (en) * 2001-05-21 2002-11-27 박승현 Hydraulic device
KR100842798B1 (en) * 2007-05-04 2008-07-01 선보선 Clutch valve for hydraulic pressbrake machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020088266A (en) * 2001-05-21 2002-11-27 박승현 Hydraulic device
KR100842798B1 (en) * 2007-05-04 2008-07-01 선보선 Clutch valve for hydraulic pressbrake machine

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