KR20080008540A - Mortar pump control device - Google Patents

Mortar pump control device Download PDF

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Publication number
KR20080008540A
KR20080008540A KR1020060067923A KR20060067923A KR20080008540A KR 20080008540 A KR20080008540 A KR 20080008540A KR 1020060067923 A KR1020060067923 A KR 1020060067923A KR 20060067923 A KR20060067923 A KR 20060067923A KR 20080008540 A KR20080008540 A KR 20080008540A
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South Korea
Prior art keywords
valve
piston
hydraulic
mortar
pump
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KR1020060067923A
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Korean (ko)
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KR100803314B1 (en
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이삼행
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이삼행
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
    • E04G21/04—Devices for both conveying and distributing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/001—Noise damping
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/10—Kind or type
    • F05B2210/11—Kind or type liquid, i.e. incompressible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/60—Fluid transfer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S251/00—Valves and valve actuation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps
    • Y10S417/90—Slurry pumps, e.g. concrete

Abstract

A mortar pump control device is provided to effectively prevent a trouble and a malfunction of the mortar pump caused by vibration, moisture and dusts by connecting a relief vent pressure control valve to a relief valve. A hydraulic pump(29) is connected to a relief valve(34) and a piston direction changing valve(27). Hydraulic cylinder A and B(21,23) are connected to a mortar pump control device in the piston direction changing valve. The hydraulic pump is connected to a piston position sensing valve(28) having neutral and bidirectional hydraulic paths. An outlet of the piston position sensing valve is connected to the piston direction changing valve. The tops of hydraulic cylinder A and B are connected to each other through a connector hose. Pilot pressure generator A and B(25,26) are installed individually on the tops of the hydraulic cylinder A and B. Both ends of the piston position sensing valve are connected to the pilot pressure generator A and B, and the relief valve are connected to a relief vent pressure control valve(32).

Description

몰탈 펌프 제어장치{Mortar pump control device} Mortar pump control device

도 1은 몰탈 펌프의 원리를 나타낸 측단면도.1 is a side cross-sectional view showing the principle of a mortar pump.

도 2는 몰탈 펌프의 원리를 나타낸 평단면도.Figure 2 is a plan sectional view showing the principle of the mortar pump.

도 3은 종래의 제어장치를 나타낸 유압회로도.3 is a hydraulic circuit diagram showing a conventional control device.

도 4는 본 발명의 제어장치를 나타낸 유압회로도로서 일측의 피스톤으로 오일이 공급되는 상태를 나타낸 회로도.Figure 4 is a circuit diagram showing a state in which oil is supplied to the piston of one side as a hydraulic circuit diagram showing a control device of the present invention.

도 5는 본 발명의 제어장치를 나타낸 유압회로도로서 타측의 피스톤으로 오일이 공급되는 상태를 나타낸 회로도.5 is a circuit diagram showing a state in which oil is supplied to the piston of the other side as a hydraulic circuit diagram showing a control device of the present invention.

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

21 : 유압실린더A 23 : 유압실린더B21: hydraulic cylinder A 23: hydraulic cylinder B

25 : 파일럿압발생부A 26 : 파일럿압발생부B25: pilot pressure generating part A 26: pilot pressure generating part B

27 : 피스톤방향전환밸브 28 : 피스톤 위치검출용밸브27: piston direction switching valve 28: piston position detection valve

29 : 유압펌프 32 : 릴리이프 벤트압력통제용밸브29: hydraulic pump 32: relief vent pressure control valve

본 발명은 건설현장에서 콘크리트나 몰탈과 같은 액상의 혼합물을 작업현장으로 압송하는 몰탈펌프에 있어서, 몰탈펌프를 유압으로 제어되도록 한 것으로서, 좀 더 구체적으로는 유압실린더의 피스톤 위치를 유압의 압력으로 감지하여 피스톤방향전환밸브를 제어하도록 함으로써 몰탈펌프의 오작동 방지 및 고장을 최소화할 수 있도록 한 것에 관한 것이다.In the present invention, in the mortar pump for pumping a liquid mixture such as concrete or mortar to the construction site in the construction site, the mortar pump is to be controlled hydraulically, more specifically, the piston position of the hydraulic cylinder to the hydraulic pressure By sensing and controlling the piston direction switching valve to prevent malfunction of the mortar pump and to minimize the failure.

일반적으로 모래, 시멘트 및 자갈 등을 혼합한 콘크리트 몰탈을 아파트나 오피스텔 등과 같은 고층 건물의 작업 현장으로 토출시키거나 녹화작업을 하기 위한 몰탈을 분사시키기 위해서는 큰 압력의 토출력이 필요로 하게 되는데, 큰 압력으로 몰탈을 토출할 경우 몰탈의 토출 중 펌프에 심한 진동이 발생하게 되었을 뿐만 아니라 수분이나 먼지 등과 같은 이물질이 발생하여 몰탈펌프가 잦은 오작동을 일으키거나 고장이 발생하게 되었다.In general, to discharge concrete mortar mixed with sand, cement, and gravel to the work site of a high-rise building such as an apartment or an officetel, or to spray mortar for greening, a large pressure soil output is required. In the case of discharging mortar by pressure, not only severe vibration was generated in the pump during discharging mortar, but also foreign substances such as moisture or dust caused frequent mortal pump malfunction or failure.

일반적으로 몰탈펌프는 도 1 및 도 2에 도시된 바와 같이 일측에 유압실린더(1, 3)가 설치되고, 그 전면에 몰탈이 흡입 및 토출되는 몰탈실린더(5, 7)가 설치되어 있어 유압실린더(1, 3)의 유압피스톤(2, 4)이 전, 후진함에 따라 몰탈실린더(5, 7)의 몰탈피스톤(6, 8)이 전, 후진하여 몰탈을 흡입 및 토출하도록 되어 있다.Generally, as shown in FIGS. 1 and 2, the mortar pump is provided with hydraulic cylinders 1 and 3 on one side, and mortar cylinders 5 and 7 through which mortar is sucked and discharged are installed on the front surface thereof. As the hydraulic pistons 2 and 4 of (1, 3) move forward and backward, the mortar pistons 6 and 8 of the mortar cylinders 5 and 7 move forward and backward to suck and discharge the mortar.

즉, 몰탈실린더(5, 7)가 후진을 하게 되면, 몰탈실린더(5, 7)의 내부가 진공을 상태가 되어 볼A(11)는 들어올리고, 볼B(12)는 잡아당겨 몰탈흡입구(9)를 통해 몰탈이 몰탈실린더(5. 7) 내부로 흡입되고, 몰탈실린더(5, 7)가 전진을 하게 되면,몰탈실린더(5, 7)의 내부의 몰탈이 볼A(11)는 밀어 몰탈흡입구(9)를 막고, 볼B(12) 는 들어올려 몰탈토출구(10)를 통해 몰탈이 작업현장으로 공급되게 된다.That is, when the mortar cylinders 5 and 7 retreat, the interior of the mortar cylinders 5 and 7 is in a vacuum state, thereby lifting the ball A 11 and pulling the ball B 12 into the mortar suction opening ( 9) through the mortar is sucked into the mortar cylinder (5.7), and when the mortar cylinder (5, 7) advances, the mortar inside the mortar cylinder (5, 7) pushes the ball A (11) The mortar suction port 9 is blocked, and the ball B 12 is lifted up so that mortar is supplied to the work site through the mortar discharge port 10.

이와 같은 몰탈펌프 2개를 도 2와 같이 병렬로 설치하여 한쪽의 실린더가 후진을 하면 다른 쪽의 실린더는 전진을 하고, 다른 쪽의 실린더가 후진을 하면 한쪽의 실린더는 전진을 반복적으로 하여 연속적으로 몰탈을 공급하도록 되어 있다.When two such mortar pumps are installed in parallel as shown in FIG. 2, when one cylinder moves backward, the other cylinder moves forward, and when the other cylinder moves backward, one cylinder moves forward repeatedly. It is intended to supply mortar.

그런데 종래의 몰탈펌프 제어장치는 도 3에 도시된 바와 같이 전기적인 신호로 펌프를 제어하도록 되어 있어 펌프의 진동, 수분 및 먼지 등에 의해 잦은 고장이 발생하였거나 오작동되는 경우가 빈번하게 발생하였다.By the way, the conventional mortar pump control device is to control the pump by an electrical signal as shown in Figure 3 so that frequent failure or malfunction occurs frequently due to vibration, moisture and dust of the pump.

즉, 종래의 몰탈펌프 제어장치는 도 3에 도시된 바와 같이 유압실린더(1, 3)의 선단에 센서나 마이크로스위치 등과 같은 위치센서(17, 18)을 설치하여 유압피스톤(2, 4) 위치를 검출하여 이 신호를 전기선(13)을 통해 PLC나 릴레이 등으로 구성된 제어부(10)로 신호를 전달하면 PLC나 릴레이는 이 신호를 솔레노이드밸브(14)를 통제할 수 있는 전기신호로 변환하여 솔레노이드 밸브(14)를 작동시킴으로써 유압펌프(15)의 오일이 각각의 유압실린더(1, 3)에 오일을 공급하거나 탱크(16)로 복귀시켜 유압피스톤(2, 4)의 왕복운동을 제어하는 구조이었다.That is, the conventional mortar pump control device is installed in the position of the hydraulic piston (2, 4) by installing a position sensor (17, 18) such as a sensor or a micro switch at the front end of the hydraulic cylinder (1, 3) as shown in FIG. When the signal is transmitted to the control unit 10 composed of a PLC or a relay through the electric wire 13, the PLC or the relay converts the signal into an electric signal that can control the solenoid valve 14, and then the solenoid. By operating the valve 14, the oil of the hydraulic pump 15 supplies oil to each of the hydraulic cylinders 1 and 3 or returns to the tank 16 to control the reciprocating motion of the hydraulic pistons 2 and 4. It was.

이를 좀더 구체적으로 살펴보면, 솔레노이드 밸브(14)의 위치가 유압펌프(15)에서 토출된 오일이 B포트를 통해 유압실린더A(1)로 유입되도록 되어 있을 경우 유압실린더A(1)의 피스톤A(2)가 상승을 하게 되고, 피스톤A(2)가 선단까지 상승을 하게 되면 위치감지용 센서A(17)가 이를 감지하여 이 신호를 제어부(10)로 인가하고, 제어부(10)에서는 이 신호에 의해 솔레노이드밸브(14)의 위치를 변환시켜 유압펌프(15)에서 토출된 오일이 A포트를 통해 유압실린더B(3)로 유입되도록 하여 유 압실린더B(3)의 피스톤B(4)가 상승시키고, 피스톤A(2)는 하강을 시키도록 되어있었다.In more detail, when the position of the solenoid valve 14 is such that the oil discharged from the hydraulic pump 15 is introduced into the hydraulic cylinder A (1) through the B port, the piston A of the hydraulic cylinder A (1) ( 2) ascends, when the piston A (2) ascends to the front end position sensor A (17) detects this and applies this signal to the control unit 10, the control unit 10, this signal The position of the solenoid valve 14 is changed to allow the oil discharged from the hydraulic pump 15 to flow into the hydraulic cylinder B (3) through the A port so that the piston B (4) of the hydraulic cylinder B (3) The piston A 2 was made to raise, and to lower.

그런데 상기와 같은 종래의 제어장치의 부품인 센서나 전기회로는 수분, 먼지 및 진동 등에 매우 취약한데, 몰탈펌프는 그 특성상 시멘트 등을 물과 혼합하여 사용을 하고, 진동이 많이 발생하게 되어 내구성이 현저히 저하되어 고장 및 오작동이 빈번하게 발생하여 작업에 많은 지장을 초래하였다.However, the sensor or the electric circuit, which is a component of the conventional control device as described above, is very vulnerable to moisture, dust, and vibration, etc. The mortar pump is used by mixing cement with water, and the vibration is generated a lot. Significantly lowered, frequent failures and malfunctions caused a lot of trouble.

만일, 몰탈펌프에 고장이 발생하였을 경우 신속히 조치가 취해지지 않으면 몰탈펌프의 내부 및 이송되는 파이프 라인의 내부에서 몰탈이 경화되어 몰탈펌프를 폐기해야 하는 등 경제적으로 큰 손실이 발생하는 등의 많은 문제점이 있었다.If a malfunction occurs in the mortar pump, many problems such as economic loss such as mortar hardening and disposal of the mortar pump occur due to the hardening of the mortar inside the mortar pump and the pipeline to be transported if no action is taken. There was this.

따라서 본 발명은 상기와 같은 제반 문제점을 제거하기 위하여 창출된 것으로서, 유압실린더의 제어를 유압오일로 이루어지도록 함으로써 몰탈펌프가 진동이나 수분 및 먼지 등에 의해 고장나거나 오작동되는 것을 방지할 수 있는 몰탈펌프의 제어장치를 제공하는데 발명의 목적이 있다.Therefore, the present invention was created in order to eliminate the above problems, by controlling the hydraulic cylinder to be made of hydraulic oil of the mortar pump that can be prevented from malfunctioning or malfunction due to vibration, moisture and dust, etc. It is an object of the invention to provide a control device.

상기 목적을 달성하기 위한 본 발명의 특징은 유압펌프에 릴리이프밸브 및 피스톤방향전환밸브가 연결 설치되고, 상기 피스톤방향전환밸브에는 유압실린더 A 및 B가 연결 설치된 몰탈펌프 제어장치에 있어서, 상기 유압펌프에는 중립 및 2방 향 유압통로가 형성된 피스톤 위치검출용밸브를 연결 설치하고, 상기 피스톤 위치검출용밸브의 토출구를 피스톤방향전환밸브와 연결하며, 상기 유압실린더A 및 B의 상부를 연결호스로 연결하고, 상기 유압실린더A 및 B의 상단에는 각각 파일럿압 발생부 A 및 B를 형성하되, 피스톤 위치검출용밸브의 양단은 상기 유압실린더A 및 B에 설치된 파일럿압 발생부 A 및 B와 연결하고, 상기 릴리이프밸브에는 릴리이프 벤트압력통제용밸브를 연결 설치한다.A characteristic of the present invention for achieving the above object is a relief valve and a piston direction switching valve is installed in the hydraulic pump, the piston direction switching valve in the mortar pump control device installed with hydraulic cylinders A and B, the hydraulic pressure The pump is connected with a piston position detecting valve formed with a neutral and two-way hydraulic passage, the outlet of the piston position detecting valve is connected with a piston direction switching valve, and the upper portions of the hydraulic cylinders A and B are connected with a connection hose. And the pilot pressure generators A and B are formed at the upper ends of the hydraulic cylinders A and B, respectively, and both ends of the piston position detection valve are connected to the pilot pressure generators A and B installed in the hydraulic cylinders A and B. The relief valve is connected to a relief vent pressure control valve.

상기와 같이 구성된 본 발명의 구성을 첨부된 도면에 의거하여 좀더 상세히 설명하면 다음과 같다.Referring to the configuration of the present invention configured as described above in more detail based on the accompanying drawings as follows.

유압펌프(29)에는 릴리이프밸브(34) 및 피스톤방향전환밸브(27)를 연결 설치하고, 상기 피스톤방향전환밸브(27)에는 유압실린더 A(21) 및 B(23)를 연결 설치하여 피스톤방향전환밸브(27)의 위치이동에 따라 유압실린더 A(21) 및 B(23)의 피스톤이 각각 상,하강되도록 하되, 상기 유압실린더A(21) 및 B(23)의 상부를 연결호스(25)로 연결한다.A hydraulic valve (29) and a piston direction switching valve (27) are connected to and installed in the hydraulic pump (29), and the hydraulic cylinders A (21) and B (23) are connected to and installed in the piston direction valve (27). As the pistons of the hydraulic cylinders A (21) and B (23) move up and down, respectively, according to the positional movement of the directional valve 27, the upper portion of the hydraulic cylinders A (21) and B (23) is connected to the hose ( 25).

그리고 상기 유압펌프(29)에는 중립 및 2방향 유압통로가 형성된 피스톤 위치검출용밸브(28)를 연결 설치하고, 상기 피스톤 위치검출용밸브(28)의 토출구를 피스톤방향전환밸브(27)와 연결하여 피스톤 위치검출용밸브(28)의 위치가 이동함에 피스톤방향전환밸브(27)의 위치가 이동되도록 한다.The hydraulic pump 29 is connected to the piston position detection valve 28 having a neutral and two-way hydraulic passage formed therein, and the outlet of the piston position detection valve 28 is connected to the piston direction switching valve 27. By moving the position of the piston position detecting valve 28 to move the position of the piston direction switching valve (27).

또한, 상기 유압실린더A(21) 및 B(23)의 상부에는 각각 파일럿압 발생부 A(25) 및 B(26)를 형성하되, 피스톤 위치검출용밸브(28)의 양단에 상기 파일럿압 발생부 A(25) 및 B(26)와 연결하여 유압실린더A(21) 및 B(23)의 피스톤 A(22) 및 B(24)의 위치에 따라 파일럿통로(35, 36)로 오일이 유입되어 피스톤위치검출용밸브(28)가 작동되도록 하고, 상기 릴리이프밸브(34)에는 릴리이프 벤트압력통제용밸브(32)를 연결 설치하여 릴리이프밸브(34)를 통제할 수 있도록 한다.In addition, pilot pressure generating units A (25) and B (26) are formed on the hydraulic cylinders A (21) and B (23), respectively, and the pilot pressure is generated at both ends of the piston position detecting valve (28). In connection with the parts A (25) and B (26), oil flows into the pilot passages (35, 36) according to the positions of the pistons (A) and (B) of the hydraulic cylinders (A) and (B) (23). The piston position detection valve 28 is operated, and the relief valve 34 is connected to the relief vent pressure control valve 32 so as to control the relief valve 34.

이상과 같은 본 발명은 유압펌프(29)에 수동조작밸브(33)를 연결 설치하고, 수동조작밸브(33)의 오일통로를 피스톤방향전환밸브(27)의 오일통로와 연결하여 필요시 몰탈펌프를 수동으로 조작할 수 있도록 하며, 상기 유압실린더A(21) 및 B(23)의 상, 하부에는 체크밸브(31)를 각각 설치하여 유압실린더 내부의 오일이 많거나 적을 경우 체크밸브(31)를 통해 보충되거나 릴리이프되도록 한다.The present invention as described above is connected to the hydraulic control valve 29, the manual control valve 33, the oil passage of the manual control valve 33 is connected to the oil passage of the piston direction switching valve 27, if necessary mortar pump To manually operate, and check valve 31 is installed on the upper and lower portions of the hydraulic cylinders A (21) and B (23), respectively, if there is much or little oil in the hydraulic cylinder. To be replenished or relief through.

상기와 같이 구성된 본 발명은 도 4에 도시된 바와 같이 피스톤방향전환밸브(27)의 위치가 설정되어 있는 상태에서 릴리이프벤트압력 통제용밸브(32)를 조작하여 릴리이프밸브(34)를 통해 탱크(30)로 곧 바로 귀환되던 오일을 차단하면, 유압펌프(29)의 오일은 피스톤방향전환밸브(27)의 B포트를 통해 유압실린더A(21)의 내부로 유입되어 피스톤A(22)를 상승시키고, 유압실린더A(21)의 상부에 있던 오일은 연결호스(25)를 통해 유압실린더B(23)로 유입되어 피스톤B(24)를 하강시키게 되는데, 피스톤A(22)가 선단까지 완전히 상승하기 전까지는 파일럿압발생부 A(25) 및 B(26)에 걸리는 오일의 압력이 동일하므로 피스톤위치검출용밸브(28)는 중립을 유지(좌우의 스프링 압력에 의해)하게 된다.The present invention configured as described above is operated through the relief valve 34 for controlling the relief vent pressure control valve 32 in a state where the position of the piston direction switching valve 27 is set as shown in FIG. 4. When the oil immediately returned to the tank 30 is shut off, the oil of the hydraulic pump 29 flows into the hydraulic cylinder A 21 through the B port of the piston directional valve 27 and the piston A 22. The oil at the top of the hydraulic cylinder A (21) flows into the hydraulic cylinder B (23) through the connecting hose 25 to lower the piston B (24), the piston A (22) to the tip Since the pressures of the oils applied to the pilot pressure generators A 25 and B 26 are the same until they fully rise, the piston position detecting valve 28 is kept neutral (by spring pressure on the left and right).

그와 같은 상태에서 피스톤A(22)가 완전히 상승을 하게 되면 B포트를 통해 유입되는 오일의 압력이 파일럿압발생부A(25)에 전달되고, 파일럿압발생부B(26)에는 오일의 압력이 발생하지 않게 되므로 피스톤위치검출용밸브(28)의 위치를 좌측 으로 이동시키게 되고, 유압펌프(29)의 오일은 A1포트를 통해 피스톤방향전환밸브(27)로 전달되어 피스톤방향전환밸브(27)를 우측으로 이동을 시키게 된다.When the piston A 22 is fully raised in such a state, the pressure of the oil flowing through the port B is transmitted to the pilot pressure generating unit A 25, and the pressure of the oil is supplied to the pilot pressure generating unit B 26. Since this does not occur, the position of the piston position detecting valve 28 is shifted to the left side, and the oil of the hydraulic pump 29 is transferred to the piston direction switching valve 27 through the A1 port and the piston direction switching valve 27 ) To the right.

따라서, 피스톤방향전환밸브(27)의 A포트를 통해 유압펌프(29)의 오일이 유압실린더B(23)로 유입되어 피스톤B(24)를 상승시키고, 유압실린더B(23)의 상부에 있던 오일은 연결호스(25)를 통해 유압실린더A(21)로 유입되어 피스톤A(22)를 하강시키게 되는데, 피스톤B(24)가 선단까지 완전히 상승하기 전까지는 상기와 같이 파일럿압발생부 A(25) 및 B(26)에 걸리는 오일의 압력이 동일하므로 피스톤위치검출용밸브(28)는 중립을 유지하게 된다.Therefore, the oil of the hydraulic pump 29 flows into the hydraulic cylinder B 23 through the A port of the piston directional valve 27, raises the piston B 24, and is located at the top of the hydraulic cylinder B 23. The oil flows into the hydraulic cylinder A (21) through the connecting hose 25 to lower the piston A (22), but until the piston B (24) is fully raised to the front end, the pilot pressure generating unit A ( Since the pressures of the oils 25) and B26 are the same, the piston position detecting valve 28 remains neutral.

그와 같은 상태에서 피스톤B(24)가 완전히 상승을 하게 되면 A포트를 통해 유입되는 오일의 압력이 파일럿압발생부B(26)에 전달되고, 파일럿압발생부A(25)에는 오일의 압력이 발생하지 않게 되므로 피스톤위치검출용밸브(28)의 위치를 우측으로 이동시키게 되고, 유압펌프(29)의 오일은 B1포트를 통해 피스톤방향전환밸브(27)로 전달되어 피스톤방향전환밸브(27)를 좌측으로 이동을 시키게 된다.In such a state, when the piston B 24 fully rises, the pressure of the oil flowing through the port A is transmitted to the pilot pressure generating portion B 26, and the pressure of the oil is applied to the pilot pressure generating portion A 25. Since this does not occur, the position of the piston position detecting valve 28 is moved to the right side, and the oil of the hydraulic pump 29 is transferred to the piston direction switching valve 27 through the B1 port, and the piston direction switching valve 27 ) To the left.

상기와 같은 동작을 반복하게 되면 교차적으로 피스톤 A와 B가 상,하강하여 몰탈을 토출시키게 되는 것이다.When the above operation is repeated, the pistons A and B alternately move up and down to discharge the mortar.

이상과 같은 본 발명은 유압실린더의 제어를 유압오일로 이루어지도록 함으로써 몰탈펌프가 진동이나 수분 및 먼지 등에 의해 고장나거나 오작동되는 것을 방지할 수 있는 효과가 있는 것이다.The present invention as described above is to control the hydraulic cylinder to be made by the hydraulic oil has an effect that can be prevented from malfunctioning or malfunction of the mortar pump by vibration or moisture and dust.

Claims (2)

유압펌프(29)에 릴리이프밸브(34) 및 피스톤방향전환밸브(27)가 연결 설치되고, 상기 피스톤방향전환밸브(27)에는 유압실린더 A(21) 및 B(23)가 연결 설치된 몰탈펌프 제어장치에 있어서, 상기 유압펌프(29)에는 중립 및 2방향 유압통로가 형성된 피스톤 위치검출용밸브(28)를 연결 설치하고, 상기 피스톤 위치검출용밸브(28)의 토출구를 피스톤방향전환밸브(27)와 연결하며, 상기 유압실린더A(21) 및 B(23)의 상부를 연결호스(25)로 연결하고, 상기 유압실린더A(21) 및 B(23)의 상단에는 각각 파일럿압발생부 A(25) 및 B(26)를 설치하되, 피스톤 위치검출용밸브(28)의 양단은 상기 유압실린더A(21) 및 B(23)의 상부에 형성된 파일럿압발생부 A(25) 및 B(26)와 연결하고, 상기 릴리이프밸브(34)에는 릴리이프 벤트압력통제용밸브(32)를 연결 설치한 것을 특징으로 하는 몰탈펌프 제어장치.A relief valve 34 and a piston direction switching valve 27 are connected to the hydraulic pump 29, and the piston direction switching valve 27 is a mortar pump having hydraulic cylinders A 21 and B 23 connected thereto. In the control device, the hydraulic pump 29 is provided with a piston position detecting valve 28 having a neutral and two-way hydraulic passage connected thereto, and the outlet of the piston position detecting valve 28 is connected to a piston direction switching valve ( 27), connecting the upper portions of the hydraulic cylinders A (21) and B (23) with a connection hose (25), and the pilot pressure generating portion at the upper end of the hydraulic cylinders (A) 21 and B (23), respectively. A (25) and B (26) are installed, but both ends of the piston position detecting valve 28 are pilot pressure generating parts A (25) and B formed on the hydraulic cylinders (A) 21 and B (23). And the relief valve 34 is connected to the relief valve pressure control valve 32, characterized in that the mortar pump control station, characterized in that . 제1항에 있어서, 상기 유압펌프(29)에 수동조작밸브(33)를 연결 설치하고, 수동조작밸브(33)의 오일통로를 피스톤방향전환밸브(27)의 오일통로와 연결하여 필요시 몰탈펌프를 수동으로 조작할 수 있도록 한 것을 특징으로 하는 몰탈펌프 제어장치.According to claim 1, wherein the hydraulic pump 29 is connected to the manual control valve 33, the oil passage of the manual control valve 33 is connected to the oil passage of the piston direction switching valve 27 mortar if necessary Mortar pump control device characterized in that the pump can be operated manually.
KR1020060067923A 2006-07-20 2006-07-20 Mortar pump control device KR100803314B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101028831B1 (en) * 2009-04-27 2011-04-12 주식회사 리더스큐엠 admixture input apparatus
CN112855483A (en) * 2021-01-04 2021-05-28 中联重科股份有限公司 Pumping equipment and control device and control method thereof

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Publication number Priority date Publication date Assignee Title
JPS5788275A (en) 1980-11-20 1982-06-02 Kyokuto Kaihatsu Kogyo Co Ltd Hydraulic actuator for piston pump
JPS59226287A (en) 1983-06-06 1984-12-19 Kyokuto Kaihatsu Kogyo Co Ltd Hydraulic pressure operating device of piston pump for sending fluid body by pressure
JPH0826850B2 (en) 1985-09-17 1996-03-21 三菱重工業株式会社 Concrete piston reverse running prevention device for concrete pump
KR100208398B1 (en) * 1997-02-21 1999-07-15 강순보 Actuator controlling outlet pressure of concrete

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101028831B1 (en) * 2009-04-27 2011-04-12 주식회사 리더스큐엠 admixture input apparatus
CN112855483A (en) * 2021-01-04 2021-05-28 中联重科股份有限公司 Pumping equipment and control device and control method thereof
CN112855483B (en) * 2021-01-04 2022-03-22 中联重科股份有限公司 Pumping equipment and control device and control method thereof

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