KR890007257Y1 - Hydraulic automatic control valve - Google Patents

Hydraulic automatic control valve Download PDF

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Publication number
KR890007257Y1
KR890007257Y1 KR2019860007891U KR860007891U KR890007257Y1 KR 890007257 Y1 KR890007257 Y1 KR 890007257Y1 KR 2019860007891 U KR2019860007891 U KR 2019860007891U KR 860007891 U KR860007891 U KR 860007891U KR 890007257 Y1 KR890007257 Y1 KR 890007257Y1
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KR
South Korea
Prior art keywords
spool
shaft hole
pressure
main body
outlet
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KR2019860007891U
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Korean (ko)
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KR880000961U (en
Inventor
하성호
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하성호
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Priority to KR2019860007891U priority Critical patent/KR890007257Y1/en
Publication of KR880000961U publication Critical patent/KR880000961U/en
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Publication of KR890007257Y1 publication Critical patent/KR890007257Y1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
    • F16K11/0708—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides comprising means to avoid jamming of the slide or means to modify the flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/04—Construction of housing; Use of materials therefor of sliding valves
    • F16K27/041—Construction of housing; Use of materials therefor of sliding valves cylindrical slide valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/60—Handles
    • F16K31/602—Pivoting levers, e.g. single-sided

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Preventing Unauthorised Actuation Of Valves (AREA)

Abstract

내용 없음.No content.

Description

유압자동 전환밸브Hydraulic automatic switching valve

제1도는 본 고안의 사시도.1 is a perspective view of the present invention.

제2도 내지 제6도는 본 고안의 종단면도로서 제2도는 피스턴이 가압되는 상태도.2 to 6 is a longitudinal cross-sectional view of the present invention, Figure 2 is a state in which the piston is pressed.

제3도는 유압밸브가 개방된 상태도.3 is a state in which the hydraulic valve is open.

제4도는 피스턴이 복귀되는 상태도.4 is a state in which the piston is returned.

제5도는 작동유가 탱크내로 드레인(Drain)되는 상태도.5 is a state in which hydraulic oil is drained into the tank.

제6도는 스풀이 복귀할 때 배출밸브가 개방된 상태도.6 is a state in which the discharge valve is opened when the spool returns.

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

1 : 본체 2 : 유입구1: body 2: inlet

7 : 유로 8a : 유입공7: Euro 8a: inlet hole

8 : 변체케이스 9 : 변체8: variant case 9: variant

10, 12 : 스프링 11 : 볼10, 12: spring 11: ball

13 : 스위치접점판13 switch contact plate

본 고안은 냉면기의 실린더 내게 있는 피스턴을 작동시키는 유압 자동 전환밸브에 관한 것이다.The present invention relates to a hydraulic automatic switching valve for operating the piston in the cylinder of the cold cotton.

종래의 유압 수동 전환밸브는 피스턴을 가압 또는 복귀시킬 때나 작동유를 탱크내로 드레인(Drain)시킬 때 사용자가 조정레버를 단계별로 동작시켜야 했기 때문에 사용상 불편했을 뿐만 아니라 사용자의 부주의로 인하여 가압상태에서 피스턴이 하사점에 도달한 후에도 조정레버를 조작하지 않으면 모터에 과부하가 발생하여 모터의 수명을 단축시키는 결점이 있었다.Conventional hydraulic manual switching valve is not only inconvenient to use because the user has to operate the control lever step by step when pressurizing or returning the piston or draining the hydraulic fluid into the tank. If the adjustment lever is not operated even after the bottom dead center is reached, the motor may be overloaded and shorten the life of the motor.

또 이와 같은 결점을 해소하기 위해 밸브본체의 양측에 솔레노이드 밸브를 부착하고 피스턴의 상사점과 하사점에는 리미트 스위치를 각각 설치하여 솔레노이드 밸브와 리미트 스위치에 의해 스풀의 위치를 변환시키는 유압전환밸브가 제안되어 있으나 이는 솔레노이드밸브, 리미트스위치, 콘트롤박스등 많은 부속품이 필요하여 그 구조가 복잡해 짐은 물론 설치비용이 많이 소요되어 비경제적이며 과다한 부속품으로 인하여 고장이 자주 발생하는 결점이 있었다.In order to solve this problem, a hydraulic switching valve is proposed, in which solenoid valves are attached to both sides of the valve body and limit switches are installed at the top dead center and the bottom dead center of the piston, respectively, to change the position of the spool by the solenoid valve and the limit switch. However, this requires many accessories such as solenoid valve, limit switch, control box, etc., which makes the structure complicated and requires a lot of installation cost.

본 고안은 종래의 이와 같은 결점을 감안하여 안출한 것으로, 스풀의 상, 하방에 변체와 볼을 각각 설치하고 본체의 일측에는 스위치 접점판을 설치하여 변체와 볼의 작동에 따라 스풀의 이동방향이 전환되어 실린더 내에있는 피스턴을 자동으로 동작시키고 1회의 동작이 완료된 후에는 스풀 선단부에 의해 전원이 자동적으로 차단될 수 있도록 한것인바, 이를 첨부된 도면에 의해 더욱 상세히 설명하면 다음과 같다.The present invention has been devised in view of the above-mentioned drawbacks of the prior art, and the upper and lower sides of the spool are provided with the deformed body and the ball, respectively, and a switch contact plate is installed on one side of the main body so that the direction of movement of the spool according to the operation of the deformed and the ball After switching to automatically operate the piston in the cylinder and once the operation is completed so that the power can be automatically cut off by the spool tip, which will be described in more detail by the accompanying drawings as follows.

첨부도면은 본 고안의 사시도와 종단면도로서 본체(1)의 상, 하방에 유입구(2)와 배출구(3)가 형성되고 있고 본체(1)의 전면에는 실린더(도시는 생략함)의 상, 하방과 연결되는 유통구(A)(B)가 각각 형성되어 있으며 본체(1)의 내부에는 스풀(6)이 삽입될수 있는 축공(4)이 형성되어 있다.The accompanying drawings are a perspective view and a longitudinal cross-sectional view of the present invention, wherein the inlet port 2 and the outlet port 3 are formed above and below the main body 1, and the front of the main body 1 has an upper side of a cylinder (not shown). The outlet port (A) (B) connected to the lower is formed, respectively, and the shaft hole (4) into which the spool (6) can be inserted is formed inside the main body (1).

이 축공(A)의 외측(바깥둘레)에 축공(4)보다 직경이 큰 다수개의 환형홈(4a)(4b)(4c)······(4g)이 일정간격으로 형성되어 각 환형홈중 환형홈(4c)(4e)은 유통구(A)(B)와 서로 통하여 지도록 되어 있고 축공(4)에는 3개의 소경부(6a)(6b)(6c)를 가진 스풀(6)이 진퇴 가능하게 삽입되어 있으며 이 스풀(6)의 일측 끝부분에는 조정레버(5)가 결합되어 조정레버(5)에 의해 스풀(6)을 수동적으로 진퇴시킬 수 있도록 되어 있다.On the outer side (outer circumference) of the shaft hole A, a plurality of annular grooves 4a, 4b, 4c larger in diameter than the shaft hole 4 are formed at regular intervals, and each annular shape is formed. The annular grooves 4c and 4e of the grooves are formed to pass through the outlet A and B, and the spool 6 has three small diameter portions 6a, 6b and 6c in the shaft hole 4. It is inserted in a retractable manner, and an adjustment lever 5 is coupled to one end of the spool 6 so that the spool 6 can be manually retracted by the adjustment lever 5.

그리고 본체(1)의 상방에 유입구(2)와 연통하는 유로(7)가 형성되어 있고 그 선단부에 다수의 유입공(8a)을 가진 변체케이스(8)가 삽입되어 배출공(14a)이 다수개 천공되고 내부에 중공부를 가진 나선봉(14)으로 고정되어 있으며 중공부에는 실린더내의 설정된 일정압력 이상일때 작동되는 변체(9)가 스프링(10)으로 탄력설치됨과 함께 그 후방에는 실린더 내의 압력을 조정하기 위한 압력조정봉(15)이 받침판(16)과 함께 설치되어 있고 이 압력조정봉(15)과 나사끼우기로 결합된 로크 너트(17)에 의해 압력을 조정할수 있도록 되어 있다.In addition, a flow path 7 communicating with the inlet port 2 is formed above the main body 1, and a deformed case 8 having a plurality of inlet holes 8a is inserted at the front end thereof, thereby providing a plurality of discharge holes 14a. Dog body is perforated and fixed with a spiral bar 14 having a hollow portion therein, and the hollow portion 9, which is operated when the pressure is set above a predetermined pressure in the cylinder, is elastically installed with the spring 10 and the pressure inside the cylinder thereafter. A pressure adjusting rod 15 for adjustment is provided together with the supporting plate 16, and the pressure adjustment rod 15 can be adjusted by a lock nut 17 coupled with the pressure adjusting rod 15 by screwing.

축공(4)의 일측 선단부 상방에 배출공(14a)과 연통하는 유로(18)가 형성되어 있고 하방에 복귀관(19)이 형성되어 있으며 복귀관(19)의 하방에 볼(11)이 스프링(12)으로 탄력 설치되어 스풀(6)이 복귀하게 되면 볼(11)이 복귀관(19)을 개방함과 동시에 소경부(6c) 공간내에 있던 작동유가 탱크(도시는 생략함)내로 드레인될 수 있게 되어 있다.A flow path 18 communicating with the discharge hole 14a is formed above one end of the shaft hole 4, and a return pipe 19 is formed below, and a ball 11 springs below the return pipe 19. When the spool 6 is elastically installed at 12 and the spool 6 is returned, the ball 11 opens the return pipe 19 and at the same time the hydraulic oil in the small diameter portion 6c space is drained into the tank (not shown). It is supposed to be.

그리고 이 스프링(12)은 조정너트(20)에 의해 조정 가능하게 고정되어 있다.And this spring 12 is fixed so that adjustment is possible by the adjustment nut 20. As shown in FIG.

본체(1)의 일측 선단부에는 스위치 케이스(21)가 형성되어 있고 스위치 케이스(21)내에는 스위치 접점판(13)이 스프링(22)으로 탄력 설치되어 있으며 이 스위치 접점판(13)은 스풀(6)의 진퇴에 따라 접속편(23)과 접속 또는 분리되면서 전원을 개폐할 수 있도록 되어 있다.A switch case 21 is formed at one end of the main body 1, and a switch contact plate 13 is elastically installed in the switch case 21 by a spring 22, and the switch contact plate 13 is a spool ( In accordance with 6), the power source can be opened and closed while being connected to or disconnected from the connecting piece 23.

이와 같이 구성된 본 고안은 제2도 내지 제6도에 도시한 바와 같이 조정레버(5)에 의해 스풀(6)을 본체(1)내 최우측으로 이동시킨후 스위치를 동작시키면 실린더내의 피스턴이 유압에 의해 자동적으로 1행정을 마치게 되며 피스턴이 1행정을 마치면 스위치 접점이 스풀(6)의 선단부에 의해 떨어져 전원이 차단되는 것으로, 그 작용효과를 설명하면 다음과 같다.According to the present invention configured as described above, as shown in FIGS. 2 to 6, when the switch is operated by moving the spool 6 to the uppermost side in the main body 1 by the adjustment lever 5, the piston in the cylinder is hydraulically operated. By the end of one stroke automatically by the end of the piston, the switch contact is cut off by the front end of the spool (6) and the power is cut off.

먼저 제2도에 도시한 바와 같이 스풀(6)을 최우측으로 이동시킨 상태에서 스위치를 동작시키면 탱크내에있던 작동유가 유입구(2)를 통해 환형홈(4c)→소경부(6a)→유통구(A)를 통해 실린더(도시는 생략함)의 상방에 유입되어 피스턴을 하강시키게 되며 피스턴이 하사점에 도달하여 일정압력 이상의 과부하가 발생하면 제3도에 도시한 바와 같이 변체(9)가 작동유의 압력에 의해 후방으로 밀려 작동유는 유로(7)→유입공(8a)→유로(18)를 통해 소경부(6c)에 도달하여 스풀(6)을 좌측으로 밀게 된다.First, as shown in FIG. 2, when the switch is operated in a state in which the spool 6 is moved to the rightmost side, the hydraulic oil in the tank flows through the inlet port 2 through the annular groove 4c → small diameter section 6a → distribution port. Through (A) flows into the upper portion of the cylinder (not shown) to lower the piston. When the piston reaches the bottom dead center and an overload occurs over a certain pressure, the transformer 9 is operated as shown in FIG. The hydraulic fluid is pushed backward by the pressure of the hydraulic fluid to reach the small diameter portion 6c through the flow path 7 → the inlet hole 8a → the flow path 18 to push the spool 6 to the left.

따라서 스풀(6)이 밀림에 따라 소경부(6a)가 제4도에 도시한 바와 같이 환형홈(4b)에 도달하게 되면 유통구(A)는 스풀(6)에 의해 폐쇄되고 상방에 설치된 변체(9)는 압력이 저하되어 스프링(10)의 복원력에 의해 밀려 폐쇄되므로 유로는 다시 유입구(2)→환형홈(4e)→소경부(6b)→유통구(B)를 통해 실린더 하방에 도달하게 되어 피스턴을 복귀시키게 되며 피스턴이 상사점에 도달하여 일정압력 이상의 과부하가 발생하면 제3도에 도시한 바와 같이 다시 변체(9)가 개방되어 스풀(6)을 좌측으로 밀어 제5도와 같이 유통구(A)(B)를 폐쇄한 상태가 되어 작동유는 유입구(2)→환형홈(4e)→소경부(6b)→배출구(B)를 통해 탱크내로 드레인되며 이때 스풀(6)의 선단부는 스위치 접점판(13)을 후방으로 밀어 전원을 차단하게 된다.Therefore, when the small diameter portion 6a reaches the annular groove 4b as shown in FIG. 4 as the spool 6 is pushed, the distribution port A is closed by the spool 6 and the upper body is deformed. Since the pressure decreases and is closed by the restoring force of the spring 10, the flow path again reaches the cylinder downward through the inlet port 2, the annular groove 4e, the small diameter part 6b, and the distribution port B. When the piston reaches the top dead center and an overload occurs over a certain pressure, the transformer 9 is opened again as shown in FIG. 3 and the spool 6 is pushed to the left to distribute the piston. Since the spheres (A) and (B) are closed, the hydraulic fluid is drained into the tank through the inlet port (2), the annular groove (4e), the small diameter part (6b), the outlet port (B), and the tip of the spool (6) is The switch contact plate 13 is pushed backward to cut off the power.

이와 같이 실린더 내의 피스턴이 1행정을 마치고 전원을 차단하게 되는 데 다시 피스턴을 작동하기 위해 조정레버(5)를 우측으로 밀면 제6도에 도시한 바와 같이 스풀(6)의 선단부에 밀렸던 스위치 접점판(13)이 복원되어 전원을 인가하게 되고 스풀(6)의 소경부(6c)에 잔류하고 있던 작동유는 볼(11)을 하방으로 밀며 복귀관(19)을 통해 탱크내로 드레인되어 제2도와 같은 최초의 상태가 된다.In this way, when the piston in the cylinder finishes one stroke and cuts off the power, when the adjustment lever 5 is pushed to the right to operate the piston again, the switch contact plate pushed to the tip of the spool 6 as shown in FIG. (13) is restored and the power is applied, and the hydraulic oil remaining in the small diameter portion 6c of the spool 6 pushes the ball 11 downward and is drained into the tank through the return pipe 19 to obtain the It becomes the first state.

이와 같이 본 고안은 변체(9)와 볼(11) 그리고 스위치 접점판(13)을 설치하여 조정레버(5)에 의해 스풀(6)을 본체(1)내 최우측으로 이동시키는 1단계 동작으로 실린더 내의 피스턴이 1행정을 마치고 자동적으로 전원을 차단시키게 되어 있으므로 단계별로 조정레버를 조작하는 종래의 유압 수동 전원밸브나 솔레노이드를 이용한 유압밸브에 비해 그 구조가 매우 간단하여 사용이 편리하고 기계의 수명을 증가시킬 수 있는 효과가 있다.As such, the present invention provides a one-step operation in which the spool 6 is moved to the rightmost side in the main body 1 by the adjustment lever 5 by installing the deformable body 9, the ball 11, and the switch contact plate 13. Since the piston in the cylinder shuts off the power automatically after completing one stroke, the structure is simpler than the conventional hydraulic manual power valve or step by step solenoid hydraulic valve that controls the adjustment lever in stages. There is an effect that can increase.

Claims (1)

유입구(2)와 배출구(3) 그리고 유통구(A)(B)를 형성시킨 본체(1)의 내부에 축공(4)을 형성하여 이 축공(4)에 환형홈(4a)(4b)(4c)······(4g)을 일정간격으로 형성함과 동시에 환형홈(4c)(4e)은 유통구(A)(B)와 각각 연통시키고 조정레버(5)와 연결된 스풀(6)에는 3개소의 소경부(6a)(6b)(6c)를 형성하여 작동유의 유압에 따라 스풀(6)이 축공(4)내를 진퇴할 수 있도록 한 것에 있어서, 본체(1) 상방에 유입구(2)와 연통하는 유로(7)를 형성하여 그 선단부에 다수의 유입공(8a)을 가진 변체케이스(8)를 설치함과 함께 변체케이스(8)내에 설정된 압력 이상일 때 작동되는 변체(9)를 스프링(10)으로 탄력 설치하고 본체(1) 하부 일측에는 볼(11)을 스프링(12)으로 탄력 설치하여 실린더 내의 압력에 따라 스풀(6)이 축공(4)내를 자동적으로 이동하면서 각 유통구(A)(B)를 선택적으로 개폐함과 동시에 그 선단부에 의해 스위치접점판(13)이 개폐될 수 있도록 하여서됨을 특징으로 하는 유압 자동전환 밸브.A shaft hole 4 is formed in the inside of the main body 1 in which the inlet 2, the outlet 3, and the distribution port A, B are formed, and the annular grooves 4a, 4b (in the shaft hole 4) ( 4c) ..... (4g) formed at regular intervals and the annular groove (4c) (4e) is in communication with the outlet port (A) (B), respectively, and the spool (6) connected to the adjustment lever (5) ), Three small diameter portions 6a, 6b, 6c are formed so that the spool 6 can move back and forth in the shaft hole 4 according to the hydraulic pressure of the working oil. 9, which is formed when a flow path 7 communicating with (2) is formed and a change case 8 having a plurality of inlet holes 8a is provided at the tip thereof, and is operated at a pressure higher than the pressure set in the change case 8; ) Is elastically installed with the spring 10 and the lower part of the main body 1 is elastically installed with the ball 11 with the spring 12 so that the spool 6 automatically moves in the shaft hole 4 according to the pressure in the cylinder. Selectively opening and closing each outlet (A) and (B) At the same time, the automatic switching valve, characterized in that the switch contact plate 13 by the front end to be opened and closed.
KR2019860007891U 1986-06-03 1986-06-03 Hydraulic automatic control valve KR890007257Y1 (en)

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KR2019860007891U KR890007257Y1 (en) 1986-06-03 1986-06-03 Hydraulic automatic control valve

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KR2019860007891U KR890007257Y1 (en) 1986-06-03 1986-06-03 Hydraulic automatic control valve

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KR880000961U KR880000961U (en) 1988-02-23
KR890007257Y1 true KR890007257Y1 (en) 1989-10-25

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