KR20110091953A - Floodgate with control device - Google Patents

Floodgate with control device Download PDF

Info

Publication number
KR20110091953A
KR20110091953A KR1020100011328A KR20100011328A KR20110091953A KR 20110091953 A KR20110091953 A KR 20110091953A KR 1020100011328 A KR1020100011328 A KR 1020100011328A KR 20100011328 A KR20100011328 A KR 20100011328A KR 20110091953 A KR20110091953 A KR 20110091953A
Authority
KR
South Korea
Prior art keywords
gate
cylinder
roller
hydraulic cylinder
lifting device
Prior art date
Application number
KR1020100011328A
Other languages
Korean (ko)
Other versions
KR101117389B1 (en
Inventor
오재욱
Original Assignee
오재욱
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 오재욱 filed Critical 오재욱
Priority to KR1020100011328A priority Critical patent/KR101117389B1/en
Publication of KR20110091953A publication Critical patent/KR20110091953A/en
Application granted granted Critical
Publication of KR101117389B1 publication Critical patent/KR101117389B1/en

Links

Images

Classifications

    • 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
    • E02B7/26—Vertical-lift gates
    • E02B7/36—Elevating mechanisms for vertical-lift gates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • 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
    • E02B7/26—Vertical-lift gates
    • E02B7/28—Vertical-lift gates with sliding 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
    • E02B7/54—Sealings for gates

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Barrages (AREA)

Abstract

PURPOSE: A floodgate with a lifting device is provided to enable application to any types of gate frames and remove the need of a rack bar or structures for connecting a floodgate and a gate frame. CONSTITUTION: A floodgate with a lifting device comprises lifting device assembly holes which are vertically bored on both ends in which the lifting device is inserted and fixed. The lifting device includes a hydraulic cylinder(3) in which a cylinder fixing pin(5) is inserted a pin insertion hole of an outer case(12) and coupled to a pin fixing hole of a cylinder fixing member(16), and the infiltration of water into the hydraulic cylinder is prevented. A top cover(13) is fixed through a connection nipple(14) to an end of the outer case near the pin insertion hole. A watertight seal(7) is attached to the other end of the outer case. A roller(10) is inserted in a center groove of a roller fixing element.

Description

승하강장치가 구비된 수문{Floodgate with control device}Sluice gate with lifting device {Floodgate with control device}

본 발명의 주요 기술은 강이나 하천, 수로의 수자원을 제어하기 위하여 사용되는 수문과 수문의 권양 방식에 관한 기술분야에 속한다.The main technology of the present invention belongs to the technical field related to the method of raising the hydrological gate and the hydrological gate used to control the water resources of the river, the river, the waterway.

수자원 관리를 위하여 사용하는 수문을 권양하는 기술로서 수문에 작용하는 수압을 산정하기 위한 유체역학과 수문을 제어하기 위하여 필요한 권양력을 산정하기 위하여 유압공학을 배경기술로 한다.It is a technology to promote hydrology used for water resource management, and hydraulic engineering is used as a background technology to calculate hydrodynamics for estimating hydraulic pressure acting on hydrologic and lifting force necessary to control hydrologic.

수문의 설치 및 수리의 편의성을 도모하여 공사의 기간을 단축하고 비용을 절감하면서도, 부품의 내구성을 유지하는 것을 주요 과제로 한다.The main task is to maintain the durability of the components while shortening the construction period and reducing the cost by promoting the convenience of installation and repair of the water gate.

상용의 유압실린더를 수문 내부에 장착하여 수문과 일체형으로 구성함으로 수문의 설치 및 수리의 편의성을 획기적으로 개선하고, 유압실린더에 직접적으로 물이 접촉하지 않도록 수밀을 유지하는 구조를 적용함으로 장시간 사용시에도 유압실린더의 내구성을 유지하도록 한다.Equipped with a commercial hydraulic cylinder inside the water gate, it is integrated with the water gate to greatly improve the convenience of installation and repair of the water gate, and applies a structure that maintains watertightness so that water does not come into direct contact with the hydraulic cylinder. Maintain the durability of the hydraulic cylinder.

본 발명은 기존에 사용하던 수문, 권양기와 달리 수문과 수문의 승하강장치가 일체형으로 구성되어 문틀의 종류나 문틀의 형식에 상관없이 수문을 적용할 수 있고, 수문과 문틀을 연결하는 래크바나 구조물, 상부 콘크리트 구조물이 불필요하여 수문의 설치와 수리가 매우 용이하다.The present invention, unlike the existing hydrological gate, hoisting device is composed of the lifting device of the hydrological gate and the hydrologic gate is integrated with the body can be applied irrespective of the type of the door frame or the type of the door frame, rack bar or structure connecting the gate and the door frame As the upper concrete structure is unnecessary, the installation and repair of the gate are very easy.

제1도. 본 발명의 사시도.
제2도. 본 발명의 정면도.
제3도. 본 발명의 측단면도.
제4도. 승하강장치의 사시도.
제5도. 승하강장치의 분해도.
제6도. 본 발명의 작동 상태도.Figure 1. Perspective view of the present invention.
Second degree. Front view of the present invention.
Third degree. Side cross-sectional view of the present invention.
4th. Perspective view of a hoisting device.
5th. Exploded View of Lifting Device.
6th. Operational state diagram of the present invention.

본 발명은 도 1 내지 도 3에서 자세히 볼 수 있는 바와 같이,As the present invention can be seen in detail in Figures 1 to 3,

승하강장치(2)를 고정하기 위하여 수문(1)의 양측단에 승하강장치(2)의 외형에 적합한 승하강장치조립공(17)을 수문(1)의 상부로부터 하부까지 관통하여 형성하고 기 형성된 승하강장치조립공(17)에 승하강장치(2)를 삽입하여 고정하는 구조로 이루어지며,In order to fix the elevating device 2, elevating device assembling holes 17 suitable for the appearance of the elevating device 2 are formed at both ends of the gate 1 through the upper to the lower part of the gate 1, It is made of a structure for inserting and lifting the lifting device (2) to the lifting device assembly hole 17 formed,

승하강장치(2)는 도3 내지 도5에서 자세히 볼 수 있는 바와 같이,The lifting device 2 can be seen in detail in FIGS. 3 to 5,

외부함체(12)의 내부에 상용의 유압실린더(3)를 삽입하고 외부함체(12)의 일단부에 형성된 핀삽입공(20)과 유압실린더(3)의 일단부에 형성된 실린더고정구(16)의 핀고정공(22)을 관통하여 실린더고정핀(5)을 견고히 조립하며,A commercial hydraulic cylinder 3 is inserted into the outer housing 12, and the pin insertion hole 20 formed at one end of the outer housing 12 and the cylinder fixture 16 formed at one end of the hydraulic cylinder 3 are provided. The cylinder fixing pin (5) is firmly assembled through the pin fixing hole (22) of the

유압실린더(3)로 물이 침투하지 못하도록 하는 방법으로서, As a method for preventing water from penetrating into the hydraulic cylinder (3),

핀삽입공(20) 인근 외부함체(12)의 일단부에는 연결닛블(14)을 관통하여 상부덮개(13)를 고정하고 외부함체(12)의 타단에는 전술한 유압실린더(3)의 내측에 삽입되어 전후진 운동하는 실린더로드(4)에 금속제의 로드고정체(6)와 연질PVC나 고무로 만들어진 수밀씰(7)을 조립하며,The upper cover 13 is fixed to one end of the outer housing 12 near the pin insertion hole 20 by penetrating the connecting nib 14, and the other end of the outer housing 12 is located inside the hydraulic cylinder 3 described above. A metal rod fixing body (6) and a watertight seal (7) made of soft PVC or rubber are assembled to the cylinder rod (4) inserted and moving forward and backward.

수문(1)이 승하강 작동시 수문(1)과 문틀 사이의 수밀작용을 위하여 전후진 할 수 있도록 하기 위한 수단으로서,As a means for allowing the water gate 1 to move back and forth for watertight action between the water gate 1 and the door frame during the elevating operation,

실린더로드(4)의 일단에 수나사의 형상으로 형성된 로드엔드(15)에 조정너트(8)와 롤러고정체(9)를 조립하고 조정너트(8)를 롤러고정체(9) 방향으로 조여서 롤러고정체(9)를 견고히 고정하며,The adjusting nut 8 and the roller fixing body 9 are assembled to the rod end 15 formed in the shape of a male screw at one end of the cylinder rod 4, and the adjusting nut 8 is tightened in the direction of the roller fixing body 9 so that the roller Firmly fix the fixture (9),

롤러고정체(9)의 중앙에 형성된 홈에 롤러(10)를 삽입하고 롤러고정체(9)에 형성된 힌지조립공(21)과 롤러(10)에 형성된 회전안내공(23)을 관통하여 힌지축(11)을 조립하여 견고히 고정함으로 롤러(10)는 힌지축(23)을 중심으로 회전운동하도록 구속된다.The hinge shaft is inserted into the groove 10 formed in the center of the roller fixing body 9 and passes through the hinge assembly hole 21 formed in the roller fixing body 9 and the rotation guide hole 23 formed in the roller 10. By assembling and firmly fixing 11, the roller 10 is constrained to rotate about the hinge shaft 23.

본 발명의 전체적인 작동원리를 자세히 살펴보면,Looking at the overall operating principle of the present invention in detail,

수문(1)을 승하강시키기 위하여 승하강장치(2)의 상단부에 돌출된 연결닛블(14)에 상용의 유압유니트에서 공급된 유압유를 공급하는 유압호스를 연결하고 유압실린더(3)에 공급되는 유압유의 방향을 제어하게 되면 수문은 승강 또는 하강의 동작을 수행하게 되며,A hydraulic hose for supplying hydraulic oil supplied from a commercial hydraulic unit is connected to a connecting nib 14 protruding from the upper end of the elevating device 2 to raise and lower the water gate 1, and is supplied to the hydraulic cylinder 3. When the direction of the hydraulic oil is controlled, the water gate performs the operation of raising or lowering,

도 3에 상세히 나타낸 바와 같이,As detailed in FIG. 3,

수문(1)의 적절한 위치에 부착된 큰왯지(18)와 작은왯지(19) 그리고 문틀의 수문에 상응하는 위치에 부착된 다수의 왯지에 의하여 수문(1)이 전후로 이동하면서 수문(1)과 문틀과의 사이가 밀착되거나 떨어지면서 물을 막는 수밀작용을 수행하게 되는데, 승하강장치(2)의 하단에 설치된 롤러(10)는 수문(1)이 승하강 작동중 언제라도 이러한 수밀작용을 위하여 전후로 이동할 수 있도록 해준다.The gate (1) is moved back and forth by the large wedge (18) and the small wedge (19) attached at the proper position of the gate (1) and the multiple gates attached at the position corresponding to the gate of the door frame. Watertight action is performed to close the water as the door frame closes or falls, and the roller 10 installed at the bottom of the elevating device 2 is used for this watertight action at any time during the water gate 1 ascending and descending operation. Allows you to move back and forth.

또한, 로드고정체(6)와 수밀씰(7)은 수문(1)의 승하강 작동시 유압실린더(3)의 내부에 삽입되어 전후로 움직이는 실린더로드(4)를 감싸고 외부함체(12)에 고정되어 있기 때문에 승하강장치(2)의 외부에 있는 물이 승하강장치(2)의 내부로 유입되어 유압실린더(3)의 표면에 접촉하지 않도록 막아줌으로 유압실린더(3)의 내구성을 유지할 수 있도록 해준다.In addition, the rod fixing body 6 and the watertight seal 7 are inserted into the hydraulic cylinder 3 during the lifting and lowering operation of the water gate 1 to surround the cylinder rod 4 moving back and forth and fixed to the outer housing 12. Therefore, the durability of the hydraulic cylinder 3 can be maintained by preventing water on the outside of the elevating device 2 from entering the interior of the elevating device 2 so as not to contact the surface of the hydraulic cylinder 3. To make sure.

도 6에서는 상용의 유압실린더(3)에 유압유가 공급되어 실린더로드(4)가 유압실린더(3)의 외부로 돌출되고 수문(1)이 상승한 상태를 나타내며, 수문(1)의 설치 상황에 따라서 실린더로드(4)의 부식을 방지하기 위하여 신축성이 있는 재질을 사용하여 수밀씰(7)과 로드엔드(15)의 조정너트(8) 사이에 방수주름커버(24)를 형성하고 실린더로드(4)의 표면에 조립함으로 실린더로드(4)가 물과 접촉하지 않도록 구성할 수도 있다.In FIG. 6, hydraulic oil is supplied to a commercial hydraulic cylinder 3 so that the cylinder rod 4 protrudes out of the hydraulic cylinder 3 and the water gate 1 is raised, depending on the installation situation of the water gate 1. In order to prevent corrosion of the cylinder rod 4, a waterproof wrinkle cover 24 is formed between the watertight seal 7 and the adjustment nut 8 of the rod end 15 by using a flexible material, and the cylinder rod 4 The cylinder rod 4 may be constructed so as not to come into contact with water by assembling the surface thereof.

1.수문 2.승하강장치
3.유압실린더 4.실린더로드
5.실린더고정핀 6.로드고정체
7.수밀씰 8.조정너트
9.롤러고정체 10.롤러
11.힌지축 12.외부함체
13.상부덮개 14.연결닛블
15.로드엔드 16.실린더고정구
17.승하강장치조립공 18.큰왯지
19.작은왯지 20.핀삽입공
21.힌지조립공 22.핀고정공
23.회전안내공 24.방수주름커버.1. Sluice 2. Lifting device
3.Hydraulic Cylinder 4.Cylinder Rod
5. Cylinder retaining pin 6. Rod retainer
7.Watertight Seal 8.Adjustment Nut
9.Roller fixed body 10.Roller
11.Hinge shaft 12.External enclosure
13.Top cover 14.Connection nib
15.Road End 16.Cylinder Fixture
17. Lifter assembly 18. Large wedge
19. Small wedge 20. Pin insertion hole
21.Hinger Assembly 22.Pin Hole
23. Rotating guide hole 24. Waterproof wrinkle cover.

Claims (2)

수문의 설치 및 수리의 편리성을 추구한 승하강장치를 구비한 수문에 있어서,
승하강장치를 고정하기 위하여 수문의 양측단에 승하강장치의 외형에 적합한 승하강장치조립공을 수문의 상부로부터 하부까지 관통하여 형성하고 기 형성된 승하강장치조립공에 승하강장치를 삽입하여 고정하는 구조로 이루어지며,
승하강장치는 외부함체의 내부에 상용의 유압실린더를 삽입하고 외부함체의 일단부에 형성된 핀삽입공과 유압실린더의 일단부에 형성된 실린더고정구의 핀고정공을 관통하여 실린더고정핀을 견고히 조립하며,
유압실린더로 물이 침투하지 못하도록 하는 방법으로서,
핀삽입공 인근 외부함체의 일단부에는 연결닛블을 관통하여 상부덮개를 고정하고 외부함체의 타단에는 전술한 유압실린더의 내측에 삽입되어 전후진 운동하는 실린더로드에 금속제의 로드고정체와 연질PVC나 고무로 만들어진 수밀씰을 조립하며,
수문이 승하강 작동시 수문과 상용의 문틀 사이의 수밀작용을 위하여 전후진 할 수 있도록 하기 위한 수단으로서,
실린더로드의 일단에 수나사의 형상으로 형성된 로드엔드에 조정너트와 롤러고정체를 조립하고 조정너트를 롤러고정체 방향으로 조여서 롤러고정체를 견고히 고정하며,
롤러고정체의 중앙에 형성된 홈에 롤러를 삽입하고 롤러고정체에 형성된 힌지조립공과 롤러에 형성된 회전안내공을 관통하여 힌지축을 조립하여 견고히 고정함으로 롤러는 힌지축을 중심으로 회전운동이 가능하도록 하는 구성을 특징으로 하는 승하강장치가 구비된 수문.In the water gate with a lifting device in pursuit of the convenience of installation and repair of the water gate,
A structure of elevating device assembly hole suitable for the appearance of the elevating device is formed at both ends of the gate to penetrate the elevating device from the top to the bottom of the water gate, and the elevating device is inserted into the elevating device assembly hole. It consists of
The lifting device inserts a commercial hydraulic cylinder inside the outer housing, and assembles the cylinder fixing pin firmly through the pin insertion hole formed at one end of the outer housing and the pin fixing hole of the cylinder fixing hole formed at one end of the hydraulic cylinder.
As a way to prevent water from penetrating into the hydraulic cylinder,
The upper cover is fixed to one end of the outer housing near the pin insertion hole through a connecting nib, and the other end of the outer housing is inserted into the above-described hydraulic cylinder and inserted into the cylinder rod to move back and forth. Assemble a watertight seal made of rubber,
As a means for allowing the gate to move back and forth for watertight action between the gate and the commercial door frame during the lifting and lowering operation,
Assemble the adjusting nut and roller fixing body to the rod end formed in the shape of male thread at one end of the cylinder rod, and tighten the adjusting nut in the direction of the roller fixing body to fix the roller fixing body firmly.
Inserting the roller into the groove formed in the center of the roller fixing body and assembling and firmly fixing the hinge shaft through the hinge assembly hole formed on the roller fixing body and the rotation guide hole formed on the roller, the roller can be rotated about the hinge axis. Sluice gate equipped with a lifting device characterized in that. 제1항에 있어서, 상용의 유압실린더에 유압유가 공급되어 실린더로드가 유압실린더의 외부로 돌출되고 수문이 상승한 상태에서 실린더로드의 부식을 방지하기 위하여 신축성이 있는 재질을 사용하여 수밀씰과 로드엔드의 조정너트 사이에 방수주름커버를 형성하고 실린더로드의 표면에 조립함으로 실린더로드가 물과 접촉하지 않도록 구성을 특징으로 하는 승하강장치가 구비된 수문.The watertight seal and the rod end according to claim 1, wherein hydraulic oil is supplied to a commercial hydraulic cylinder so that the cylinder rod protrudes out of the hydraulic cylinder and the cylinder rod is prevented from being corroded in a state where the water gate is raised. A water gate equipped with a lifting device, characterized in that the waterproof cover is formed between the adjusting nut of the nut and assembled on the surface of the cylinder rod so that the cylinder rod does not come into contact with water.
KR1020100011328A 2010-02-08 2010-02-08 Floodgate with control device KR101117389B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100011328A KR101117389B1 (en) 2010-02-08 2010-02-08 Floodgate with control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100011328A KR101117389B1 (en) 2010-02-08 2010-02-08 Floodgate with control device

Publications (2)

Publication Number Publication Date
KR20110091953A true KR20110091953A (en) 2011-08-17
KR101117389B1 KR101117389B1 (en) 2012-03-07

Family

ID=44928977

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020100011328A KR101117389B1 (en) 2010-02-08 2010-02-08 Floodgate with control device

Country Status (1)

Country Link
KR (1) KR101117389B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106049375A (en) * 2016-07-07 2016-10-26 常州液压成套设备厂有限公司 Waterproof antifouling hydraulic hoist
CN110004888A (en) * 2019-04-30 2019-07-12 中国电建集团北京勘测设计研究院有限公司 One kind is from lift group bonding gate arragement construction
KR102220668B1 (en) * 2020-10-28 2021-02-26 (주) 우강 Movable weir that can prevent damage to the sluice gate by obstacles and correct the sluice installation angle

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016133309A1 (en) * 2015-02-16 2016-08-25 주식회사 우진산업 Cylinder integral lift floodgate
KR101766324B1 (en) * 2016-12-19 2017-08-09 주식회사 우진산업 device for lifting which hydraulic oil feeding used pistonrod

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200323111Y1 (en) 2003-05-17 2003-08-14 주식회사 우진산업개발 Establishment structure of oil pressure floodgate
KR100830837B1 (en) 2006-08-10 2008-05-20 오재욱 Structure of hydraulic floodgate
KR100802028B1 (en) 2006-11-03 2008-02-12 주식회사 우진산업 Rivers magnetic pulling up floodgate
KR100915023B1 (en) 2009-04-29 2009-09-02 주식회사 우진산업 Water-gate opening and shutting control cylinder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106049375A (en) * 2016-07-07 2016-10-26 常州液压成套设备厂有限公司 Waterproof antifouling hydraulic hoist
CN110004888A (en) * 2019-04-30 2019-07-12 中国电建集团北京勘测设计研究院有限公司 One kind is from lift group bonding gate arragement construction
KR102220668B1 (en) * 2020-10-28 2021-02-26 (주) 우강 Movable weir that can prevent damage to the sluice gate by obstacles and correct the sluice installation angle

Also Published As

Publication number Publication date
KR101117389B1 (en) 2012-03-07

Similar Documents

Publication Publication Date Title
KR101117389B1 (en) Floodgate with control device
KR101370040B1 (en) Sluice having flap gate
KR101946356B1 (en) A window frame prefabricated with water
KR200401266Y1 (en) Hydraulic floodgate with sealing structure
DK2166908T3 (en) Bath with door
KR20120038731A (en) Pump mounted gate
KR102064133B1 (en) Apparatus for support floodgate of dam
KR20120015475A (en) Watergate openning and shutting device for agricultural waterway
JP4276963B2 (en) Slide gate device
KR100934335B1 (en) Grand Canal Swivel Gate
KR101285341B1 (en) Hydraulic movable weir with boundary of fresh water and salt water
KR101317313B1 (en) Complex gates with integral pulling up and turnover floodgate
CN209369599U (en) A kind of hinge type folding shower doors
CN108301386B (en) Upturning dam gate capable of realizing instant self-locking control
KR101244324B1 (en) Floodgate with device for reducing friction
JP2017227108A (en) Flap gate having door body lift mechanism
CN211816085U (en) Waterproof drainage device of hydraulic engineering construction
CN208201809U (en) A kind of compound gate of arc
KR20160013363A (en) Doorframe plate of pulling up type floodgate device
KR100698235B1 (en) Device opening and shutting of waterway
KR200377423Y1 (en) Floodgate opening and shutting adopted by water pressure difference
KR200371612Y1 (en) A river watergate for preventing separate and back flow, using gasket
CN204825803U (en) Novel gate for reservoir
CN211548119U (en) Waterproof and anti-seepage structure for constructional engineering
KR200346671Y1 (en) Screw type diversion gate using at irrigation canal

Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20141128

Year of fee payment: 4

FPAY Annual fee payment

Payment date: 20160401

Year of fee payment: 5

FPAY Annual fee payment

Payment date: 20170112

Year of fee payment: 6

FPAY Annual fee payment

Payment date: 20181127

Year of fee payment: 8

FPAY Annual fee payment

Payment date: 20191125

Year of fee payment: 9