KR101547447B1 - Operation Apparatus for hydraulic conduction floodgate - Google Patents

Operation Apparatus for hydraulic conduction floodgate Download PDF

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Publication number
KR101547447B1
KR101547447B1 KR1020150087144A KR20150087144A KR101547447B1 KR 101547447 B1 KR101547447 B1 KR 101547447B1 KR 1020150087144 A KR1020150087144 A KR 1020150087144A KR 20150087144 A KR20150087144 A KR 20150087144A KR 101547447 B1 KR101547447 B1 KR 101547447B1
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KR
South Korea
Prior art keywords
hydraulic
pressure
oil
valve
flow rate
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Application number
KR1020150087144A
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Korean (ko)
Inventor
김창현
Original Assignee
유한회사 도건엔지니어링
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Priority to KR1020150087144A priority Critical patent/KR101547447B1/en
Application granted granted Critical
Publication of KR101547447B1 publication Critical patent/KR101547447B1/en

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
    • E02B7/20—Movable barrages; Lock or dry-dock gates
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
    • E02B7/20—Movable barrages; Lock or dry-dock gates
    • E02B7/40—Swinging or turning gates
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
    • E02B7/20—Movable barrages; Lock or dry-dock gates
    • E02B7/40—Swinging or turning gates
    • E02B7/44—Hinged-leaf gates

Abstract

The present invention relates to a hose which is installed in a drainage channel of a river or a bank and is capable of reducing the opening and closing pressure by being pushed and pulled by a plurality of hydraulic cylinders installed at the time of opening and closing of a watercourse, And can be opened even when the power supply is interrupted due to power failure or the like. Also, it is possible to maintain the constant pressure by the flow control valve at all times, The present invention relates to a water inlet operating device.
That is, according to the present invention, the hydraulic pressure of the oil tank is supplied through the first opening / closing valve and the second opening / closing valve provided respectively to the first hydraulic hose and the second hydraulic hose connected to the first and second hydraulic cylinders, And the oil tank is supplied with a first throttle valve for controlling the oil to be supplied at a predetermined flow rate through a first check valve for preventing reverse flow of the hydraulic pressure generated in the hydraulic pump which applies pressure by the operation of the hydraulic motor A solenoid operation part for switching the direction to an electronic signal in the first throttle valve and a solenoid operated part for supplying the solenoid operated part to the first and second hydraulic hoses on the first supply port side via a second check valve, The hydraulic pressure of the first and second hydraulic hoses on the first supply port side is regulated to a predetermined flow rate to be drained, And a level switch for supplying hydraulic pressure to the first and second hydraulic hoses and for sensing the flow rate of the oil in the oil tank when the flow rate of the oil is lowered to shut off the oil supply to the hydraulic pressure line. .

Description

Technical Field [0001] The present invention relates to an operation apparatus for hydraulic conduction floodgate,

More particularly, the present invention relates to a hydraulic control apparatus for a hydraulic conduit, and more particularly, to a hydraulic control apparatus for a hydraulic conduit, which is installed in a drainage passage of a river or a bank, , It is possible to operate even if a part of the hose connected to the hydraulic cylinder is broken, and it is possible to open the water gate even when the power supply is interrupted due to power failure or the like, So that a stable opening and closing of the water gate can be performed.

Generally, a water gate installed in a drainage channel of a river or a bank to control the amount of water is for storing or discharging water. In the case of an automatic water gate, the opening and closing operation of the water gate is usually performed by a hydraulic cylinder.

The construction of a typical hydraulic type watertight door which is operated to open and close by swinging the water gate by the expansion and contraction operation of the hydraulic cylinder is characterized in that the rotary shaft is integrally formed at both sides of the water gate main body and both sides of the water gate main body, And one end of the connecting link is connected to a rotating shaft located in the fixing bracket and the other end of the connecting link is connected to a rotating shaft of the hydraulic cylinder through a pivot shaft The water gate is opened and closed by means of turning the water gate by means of the expansion and contraction operation of the hydraulic cylinder at both sides of the water gate.

As described above, in the conventional conductive hydraulic pressure gates, the opening and closing of the water gate is performed by the hydraulic cylinder. Therefore, the durability of the cylinder affects the service life of the watercraft, and deformation such as bending of the cylinder, There is a problem that the hydrological operation can not be performed in the case of occurrence, the expenditure of the maintenance cost due to frequent repair and replacement is increased, and it takes much more time than necessary for maintenance.

In view of the above-mentioned problems, the conventional conduit gate has a plurality of cylinders and can open and close the gate with a strong force. Japanese Patent Application No. 10-0800563 discloses a conduit gate, And the upper and lower ends of the connecting link are connected to the upper ends of the operating rods of the plurality of cylinders arranged in the upper and lower horizontal directions so that the upper and lower cylinders can open and close the hydrone by a strong force There was something,

The present invention is based on the above-described technology, and enables stable operation even under conditions such as breakage of power supply hose, interruption of power supply such as power failure, change of oil pressure and oil temperature.

The present invention can open and close a water gate by mutually pushing and pulling each other by a plurality of hydraulic cylinders installed therein, and when a part of the hose connected to the hydraulic cylinder is broken and the oil flows out, the oil flow can be blocked by the level switch, So that the water can be opened and closed by a manual valve even if the power supply is interrupted by a power failure or the like and a constant pressure can be maintained in the cylinder by the flow rate control valve, And to provide a driving apparatus for a hydraulic conduit.

The present invention relates to a hydraulic hose comprising a hydraulic type hydraulically operated hydrological gate for operating a hydrant in a form of mutually pushing and pulling by a plurality of first and second hydraulic cylinders, and a first hydraulic hose and a second hydraulic hose connected to the first and second hydraulic cylinders, And the oil tank is supplied with the oil pressure generated by the hydraulic pump which imposes the pressure on the oil by the operation of the hydraulic motor, And the first throttle valve is connected to the high-pressure supply port, the low-pressure supply port, the hydraulic supply port, and the drain port by regulating the oil to a predetermined flow rate in the first throttle valve A solenoid operated portion for switching the direction to an electronic signal in the state of the first supply port The hydraulic pressure of the first and second hydraulic hoses of the first supply port side is regulated to a predetermined flow rate to be drained through the second throttle valve, And a level switch for supplying hydraulic pressure to the first and second hydraulic hoses on the side of the supply port and detecting the supply of the oil when the flow rate of the oil in the oil tank drops, It features a driving device for inquiry.

The first hydraulic cylinder is provided with a first hydraulic hose connected to the rear end of the first hydraulic cylinder to supply hydraulic pressure and another hydraulic hose connected to the front end to drain the hydraulic pressure and the second hydraulic cylinder is connected to the tip, A second hydraulic hose connected to the second hydraulic hose and a second hydraulic hose connected to the rear end of the hydraulic hose and to which the hydraulic pressure is drained.

The first throttle valve regulates the flow rate of the first hydraulic hose connected to the rear end of the first hydraulic cylinder and the second hydraulic hose connected to the front end of the second hydraulic cylinder and the second throttle valve controls the flow rate of the first hydraulic cylinder The first hydraulic hose connected to the front end of the second hydraulic cylinder and the second hydraulic hose connected to the rear end of the second hydraulic cylinder.

Pressure supply port, a low-pressure supply port, a hydraulic pressure supply port, and a drain port through a pilot line branched from the hydraulic pressure line, a hydraulic pressure is supplied through a manual valve for manually switching a direction, And the third throttle valve that drains the first and second supply port side first and second hydraulic hoses by regulating the hydraulic pressure of the first and second hydraulic hoses to a predetermined flow rate is drained via a stop valve.

The first check valve is provided with a relief valve that supplies a predetermined pressure to the front of the check valve, and the hydraulic pressure supplied from the relief valve is supplied to the first throttle valve.

The hydraulic conduction gate of the present invention can perform stable opening and closing of the gate with a strong force while reducing the opening and closing pressure by performing a function of the plurality of cylinders mutually corresponding to each other by the same force by the action of the plurality of cylinders mutually pushing and pulling When the oil pressure in the oil tank is lowered when the hydraulic hose connected to the hydraulic cylinder is broken and the oil flows out to the outside, when the operation of the hydraulic cylinder is stopped by the level switch to stop the operation of the hydraulic pump, It is possible to continuously open and close the hydrological main body by using the remaining unbroken hydraulic hose after shutting off the opening / closing valve corresponding to the hydraulic hose.

In addition, when the power supply is interrupted due to power failure, the manual valve can open (open) the water gate, and the constant pressure can be maintained in the cylinder by the flow rate control valve.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing the construction of a hydraulic type water pump to which the present invention is applied. FIG.
Fig. 2 is a side elevational view showing a state in which the hydrologic main body is in an upright closed state in the hydraulic conduit according to the present invention; Fig.
Fig. 3 is a side view showing a state in which a hydrologic main body is opened in a hydraulically operated conduit to which the present invention is applied.
Fig. 4 is a hydraulic circuit diagram showing a configuration of an operation device of a hydraulic conductivity water tunnel to which the present invention is applied. Fig.
Fig. 5 is an enlarged view of the hydraulic circuit of the "A" portion shown in Fig. 4; Fig.
FIG. 6 is a plan view showing a hydraulic unit constituting an operating device of a hydraulic-type conducting water door to which the present invention is applied; FIG.
Fig. 7 is a front view showing a hydraulic unit constituting an operating device of a hydraulic-type conduction water door to which the present invention is applied; Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

The present invention is characterized in that one end of a connecting link 112 is connected to a rotating shaft 110 installed at both lower sides of the hydrograph body 100 and a pivot shaft 114 provided at the other end of the connecting link 112 is connected to the hydrograph body (121) and (122) are connected to the ends of the operating rod (116) of the first and second hydraulic cylinders (121, 122) installed on both sides of the front and rear opening and closing directions of the first and second hydraulic cylinders And the pivot shaft 114 of the connecting link 112 is pushed and pulled by each other.

That is, a plurality of first and second hydraulic cylinders 121 and 122 are pushed and pulled by the first and second hydraulic cylinders 121 and 122 when the hydrologic main body 100 is opened and closed, The first and second hydraulic cylinders 121 and 122 can be opened and closed with a stronger force, so that the first and second hydraulic cylinders 121 and 122 can be opened / Since the load of the operation rod 116 is dispersed, it is possible to prevent the extension of the life of the cylinder and the warping of the operation rod, and to perform the function of opening and closing the water gate with the other cylinder even if a failure occurs in any one cylinder .

1 shows a plurality of first and second hydraulic cylinders 121 and 122 installed on a connecting link 112 of a rotary shaft 110 installed on both sides of a hydrograph body 100. However, The first and second hydraulic cylinders 121 and 122 provided on both side rotary shafts 110 of the hydrograph body 100 correspond to one hydrograph body 100, The hydraulic gate main body 100 is operated by the first and second hydraulic cylinders 121 and 122 installed in a plurality of ways to mutually push and pull the hydraulic circuit diagram, Closing valves 131a and 131b (121a and 121b) installed in the first and second hydraulic hoses 121a and 121b and the second hydraulic hoses 122a and 122b connected to the first and second hydraulic cylinders 121 and 122, And the second open / close valves 132a and 132b.

That is, the first hydraulic cylinder 121 is provided with a first hydraulic hose 121a connected to the rear end and supplied with the hydraulic pressure and another first hydraulic hose 121b connected to the front end to drain the hydraulic pressure, 2 hydraulic cylinder 122 is provided with a second hydraulic hose 122a connected to the front end and supplied with hydraulic pressure and another second hydraulic hose 122b connected to the rear end to drain the hydraulic pressure, The second hydraulic cylinder 122 is adapted to pull the hydrological main body 100 by pushing the hydrological main body 100 by the first hydraulic cylinder 122. [

The oil tank 120 regulates the oil supplied from the hydraulic pump 140, which applies pressure by the operation of the hydraulic motor 142, to be supplied at a predetermined flow rate via the first check valve 150 that prevents the reverse flow And is supplied to the first throttle valve 152.

The first throttle valve 152 regulates the oil to a predetermined flow rate and is connected to the high pressure supply port A, the low pressure supply port B, the hydraulic pressure supply port P and the drain port T as an electronic signal And a solenoid operation part 154 for switching the direction of the hydraulic pressure so as to switch the direction of the hydraulic pressure.

The hydraulic pressure is supplied from the solenoid actuating part 154 to the first and second hydraulic hoses 121a and 122a through the pressure reducing valve 156 and the second check valve 160. The solenoid actuating part 154 The hydraulic pressure of the first and second hydraulic hoses 121a and 122a on the first supply port side is adjusted by the second throttle valve 162 to be adjusted to a predetermined flow rate to be drained, And the hydraulic pressure is supplied to the first and second hydraulic hoses 121b and 122b.

The first and second throttle valves 152 and 162 are flow control valves and the first throttle valve 152 is connected to the first hydraulic hose 121a connected to the rear end of the first hydraulic cylinder 121, The second throttle valve 162 regulates the flow rate of the first hydraulic fluid supplied from the first hydraulic hose 121b connected to the front end of the first hydraulic cylinder 121 And the second hydraulic hose 122b connected to the rear end of the second hydraulic cylinder 122 to prevent the rapid fluctuation of the flow rate so that the hydraulic gate main body 100 is always opened and closed with a constant hydraulic pressure .

A level switch 164 is provided for detecting the flow rate of the oil in the oil tank 120 when the flow rate of the oil is lowered and cutting off the supply of oil to the hydraulic pressure line. .

This is because when the flow rate of the oil tank 120 drops due to oil flowing out through the hydraulic hose in the event that a part of the hydraulic cylinder hydraulic hose is broken, the operation of the hydraulic pump 140 is stopped by the level switch 164, The shutoff valve corresponding to the broken hydraulic hose is shut off, and then the remaining hydraulically operated hose can be used to open and close the hydrant main body.

In addition, when the hydraulic hose for pushing out the hydraulic cylinders installed in a plurality is broken, the hydraulic hose can be opened and closed only by the hydraulic hose for pulling the hydraulic cylinder, and when the broken hydraulic hose is replaced, The hydraulic hose can continuously open and close the hydrologic main body without interruption.

In the present invention, the state connected to the high pressure supply port (A), the low pressure supply port (B), the hydraulic pressure supply port (P), and the drain port (T) through the pilot channel branched from the hydraulic pressure line is manually switched The hydraulic pressure is supplied to the first supply port side first and second hydraulic hoses 121a and 122a via the manual valve 166. When the manual valve 166 is turned to the low pressure supply port B, And the third throttle valve 168 is configured to be drained via the stop valve 170. The third throttle valve 168,

The stop valve 170 blocks the stop valve 170 when the solenoid actuating part 154 is operated by a power source and opens the stop valve 170 when the power supply is stopped due to a power failure or the like, When the hydraulic pressure of the first and second hydraulic hoses 121a and 122a is drained to the first supply port 166 by the third throttle valve 168, Thereby preventing breakage due to the sudden opening of the gate body 100.

The hydraulic pressure supplied by the relief valve 172 is supplied to the first throttle valve 152 via the relief valve 172 for supplying the hydraulic pressure to the front of the first check valve 150, .

In addition, a third check valve 174 and a shutoff valve 176 are provided in front of the stop valve 170 to branch off from the pilot line and supply power to the UPS power.

In the figure, reference numeral 180 denotes a pressure switch, 182 denotes a pressure gauge, and 184 denotes a hand pump.

The hydronegate main body 100 of the hydraulically conductive watertight door of the present invention is constructed such that the first and second hydraulic cylinders 100, The operation rod 116 of any one of the first and second hydraulic cylinders 121 and 122 is expanded and contracted in the pulled state and the operation rod 116 of another hydraulic cylinder is extended in a pushing state, The cylinders 121 and 122 are expanded and contracted in correspondence with each other so as to push and pull the mutual hinge main body 100 mutually, thereby making it possible to stably open and close the gates with a strong force while reducing the opening and closing pressure.

The hydraulic conduction gate includes a first hydraulic hose 121a and a second hydraulic hose 122b connected to the first and second hydraulic cylinders 121 and 122, The hydraulic pressure of the oil tank 120 is supplied to the first hydraulic cylinder 121 via the second open / close valves 131a and 131b and the second open / close valves 132a and 132b. The first hydraulic cylinder 121 is connected to the rear end, And a first hydraulic hose 121b which is connected to the hose 121a and to which the hydraulic pressure is drained. The second hydraulic cylinder 122 is provided with a second hydraulic hose 122a connected to the front end thereof to which hydraulic pressure is supplied, And a second hydraulic hose 122b to which the hydraulic pressure is drained.

 When the first hydraulic cylinder 121 operates to push the hydrological main body 100, the second hydraulic cylinder 122 acts to pull the hydrological main body 100 and conversely the first hydraulic cylinder 121 The second hydraulic cylinder 122 acts to push the hydrological main body 100 downward.

The oil tank 120 is controlled to supply oil at a predetermined flow rate through a first check valve 150 for preventing reverse flow of the oil pressure generated in the hydraulic pump 140 that applies pressure by the operation of the hydraulic motor 142 The low pressure supply port B, the hydraulic pressure supply port P, and the drain port 152. The first throttle valve 152 is controlled by the first throttle valve 152 to regulate the oil to a predetermined flow rate, The direction of the hydraulic pressure is switched by the solenoid actuating part 154 which is connected to the solenoid valve T and is switched to the electronic signal.

The solenoid actuating unit 154 supplies the first and second hydraulic pressure hoses 121a and 122a to the first and second supply port side first and second hydraulic hoses 121a and 122a, The hydraulic pressure of the two hydraulic hoses 121a and 122a is supplied to the first and second hydraulic hoses 121b and 122b of the second supply port via the second throttle valve 162 which is controlled to be drained at a set flow rate The first throttle valve 152 includes a first hydraulic hose 121a connected to the rear end of the first hydraulic cylinder 121 and a second hydraulic hose 122a connected to the front end of the second hydraulic cylinder 122 And the second throttle valve 162 regulates the flow rate of the hydraulic fluid supplied to the first hydraulic cylinder 121b connected to the front end of the first hydraulic cylinder 121 and the second hydraulic cylinder 121b connected to the rear end of the second hydraulic cylinder 122, Since the flow rate of water drained from the hose 122b is controlled, the water main body 100 can be stably opened and closed at a constant hydraulic pressure at all times when the water main body 100 is opened and closed do.

In the present invention, any one of the first hydraulic hoses 121a, 121b and the second hydraulic hoses 122a, 122b connected to the hydraulic cylinders 121, 122 installed in a plurality of units is broken, The oil level in the oil tank 120 is lowered and the oil level in the oil tank 120 is lowered by the level switch 164 to stop the operation of the hydraulic pump 140, The supply is interrupted.

When the operation of the hydraulic pump 140 is stopped, the open / close valve corresponding to the broken hydraulic hose is blocked to prevent the oil from flowing out to the outside. Then, the hydraulic pump 140 is operated to immediately use only the remaining unbroken hydraulic hose The hydraulic hose 100 can be continuously operated without interruption. At this time, it is impossible to perform the functions of the first and second hydraulic cylinders 121 and 122. However, , And two hydraulic cylinders 121 and 122, respectively.

In order to open (cover) the hydrology main body 100 even when the power supply is interrupted due to a power failure or the like, the stop valve 170 formed in the pilot pipeline branched from the hydraulic pipeline is opened, A third throttle valve (not shown) for adjusting the hydraulic pressure of the first and second hydraulic hoses 121a and 122a to a predetermined flow rate when the first throttle valve 166 is turned to the low pressure supply port B 168 allow opening of the hydrograph body 100 by means of drain via the stop valve 170.

The third throttle valve 168, which regulates the hydraulic pressure of the first supply port side first and second hydraulic hoses 121a and 121a at a predetermined flow rate to be drained, is configured to be drained via the stop valve 170, The throttle valve 168 regulates the opening speed when the hydrological main body 100 is opened (closed) to prevent breakage which may be caused by abrupt opening.

While the present invention has been described with reference to the exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

100: Hydrologic main body 110:
112: connecting link 114: pivoting axis
116; Operating rod 120: Oil tank
121, 122: first and second hydraulic cylinders 121a, 121b: first hydraulic hose
122a, 122b: second hydraulic hose 131a, 131b: first open / close valve
132a, 132b: second open / close valve 140: hydraulic pump
142: Hydraulic motor 150: First check valve
152: first throttle valve 154: solenoid operated part
156: Decompression valve 160: Second check valve
162: second throttle valve 164: level switch
166: manual valve 168: third throttle valve
170: Stop valve 172: Relief valve
174: third check valve 176: shutoff valve
180: Pressure switch 182: Pressure gauge

Claims (5)

And a hydraulically operated conduit for operating the hydrants in such a manner that the hydrants are pushed and pulled by the first and second hydraulic cylinders 121 and 122
Closing valves 131a and 131b (121a and 121b) installed in the first and second hydraulic hoses 121a and 121b and the second hydraulic hoses 122a and 122b connected to the first and second hydraulic cylinders 121 and 122, And the second on-off valves 132a and 132b to supply the oil pressure of the oil tank 120,
The oil tank 120 is controlled to supply the oil at a predetermined flow rate through a first check valve 150 for preventing reverse flow of the oil pressure generated in the hydraulic pump 140 that applies pressure by the operation of the hydraulic motor 142 To the first throttle valve 152,
The first throttle valve 152 regulates the oil to a predetermined flow rate and is connected to the high pressure supply port A, the low pressure supply port B, the hydraulic pressure supply port P and the drain port T as an electronic signal A solenoid actuating part 154 for switching direction,
The hydraulic pressure is supplied from the solenoid actuating part 154 to the first and second hydraulic hoses 121a and 122a through the second check valve 160 and the solenoid actuating part 154 changes direction The hydraulic pressure of the first and second hydraulic hoses 121a and 122a on the first supply port side is regulated to be set to a predetermined flow rate and then drained through the second throttle valve 162, (121b, 122b) to be supplied with hydraulic pressure,
And a level switch (164) for detecting the flow rate of the oil in the oil tank (120) when the flow rate of the oil tank (120) is lowered to shut off the supply of oil to the hydraulic line.
The method according to claim 1,
The first hydraulic cylinder 121 is provided with a first hydraulic hose 121a connected to the rear end and supplied with hydraulic pressure and another first hydraulic hose 121b connected to the front end to drain the hydraulic pressure, Wherein the cylinder (122) is provided with a second hydraulic hose (122a) connected to the front end and supplied with the hydraulic pressure and another second hydraulic hose (122b) connected to the rear end to drain the hydraulic pressure. Driving device.
The method according to claim 1,
The first throttle valve 152 is connected to the first hydraulic hose 121a connected to the rear end of the first hydraulic cylinder 121 and the second hydraulic hose 122a connected to the front end of the second hydraulic cylinder 122 And the second throttle valve 162 is connected to the first hydraulic hose 121b connected to the front end of the first hydraulic cylinder 121 and the second hydraulic hose 121b connected to the rear end of the second hydraulic cylinder 122, (122a, 122b), and the flow rate of the hydraulic fluid discharged from the hydraulic pump (122b) is adjusted.
The method according to claim 1,
A manual valve for manually switching the state connected to the high pressure supply port A, the low pressure supply port B, the hydraulic pressure supply port P and the drain port T via the pilot pipeline branched from the hydraulic pressure line The hydraulic pressure of the first supply port side first and second hydraulic hoses 121a and 122a is set to the low pressure supply port B by the manual valve 166, And the third throttle valve (168) for draining by adjusting the flow rate is configured to be drained via a stop valve (170).
The method according to claim 1,
The hydraulic pressure supplied from the relief valve 172 to the first throttle valve 152 is supplied to the first throttle valve 152 through a relief valve 172 for supplying a predetermined pressure to the front of the first check valve 150, Wherein the hydraulic pump is configured to be supplied with the hydraulic fluid.
KR1020150087144A 2015-06-19 2015-06-19 Operation Apparatus for hydraulic conduction floodgate KR101547447B1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105648989A (en) * 2016-01-28 2016-06-08 成都万江港利科技股份有限公司 Integrated plate brake control system
KR101707894B1 (en) * 2016-06-08 2017-03-06 일성보산업(주) Apparatus for opening and closing a movable weir
KR101839067B1 (en) 2016-04-26 2018-03-16 (주)동아산기 Position Control Device An Hydraulic Gate for Waterway
KR102058937B1 (en) * 2018-01-18 2019-12-26 (주)지서산업 Long span type floodgate with double pipes

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000160539A (en) 1998-11-30 2000-06-13 Shinko Sangyo Kk Hydraulic device used for raising equipment of movable gate
KR100939639B1 (en) 2009-05-12 2010-01-29 유한회사 도건엔지니어링 Hydraulic gate
JP2012067903A (en) 2010-09-27 2012-04-05 Yuutekku:Kk Flushing circuit and flushing method for hydraulic cylinder driving circuit
KR101332784B1 (en) 2013-06-10 2013-11-25 (주) 제이엘산업 Water gate driving device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000160539A (en) 1998-11-30 2000-06-13 Shinko Sangyo Kk Hydraulic device used for raising equipment of movable gate
KR100939639B1 (en) 2009-05-12 2010-01-29 유한회사 도건엔지니어링 Hydraulic gate
JP2012067903A (en) 2010-09-27 2012-04-05 Yuutekku:Kk Flushing circuit and flushing method for hydraulic cylinder driving circuit
KR101332784B1 (en) 2013-06-10 2013-11-25 (주) 제이엘산업 Water gate driving device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105648989A (en) * 2016-01-28 2016-06-08 成都万江港利科技股份有限公司 Integrated plate brake control system
CN105648989B (en) * 2016-01-28 2018-06-26 成都万江港利科技股份有限公司 Integrated board lock control system
KR101839067B1 (en) 2016-04-26 2018-03-16 (주)동아산기 Position Control Device An Hydraulic Gate for Waterway
KR101707894B1 (en) * 2016-06-08 2017-03-06 일성보산업(주) Apparatus for opening and closing a movable weir
KR102058937B1 (en) * 2018-01-18 2019-12-26 (주)지서산업 Long span type floodgate with double pipes

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