KR100801982B1 - A bollard - Google Patents

A bollard Download PDF

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Publication number
KR100801982B1
KR100801982B1 KR1020060113753A KR20060113753A KR100801982B1 KR 100801982 B1 KR100801982 B1 KR 100801982B1 KR 1020060113753 A KR1020060113753 A KR 1020060113753A KR 20060113753 A KR20060113753 A KR 20060113753A KR 100801982 B1 KR100801982 B1 KR 100801982B1
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KR
South Korea
Prior art keywords
foundation
buried
unit
post body
pillar body
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KR1020060113753A
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Korean (ko)
Inventor
이은세
Original Assignee
주식회사 세원리테크
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Priority to KR1020060113753A priority Critical patent/KR100801982B1/en
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
    • E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
    • E01F9/623—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection
    • E01F9/631—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection specially adapted for breaking, disengaging, collapsing or permanently deforming when deflected or displaced, e.g. by vehicle impact
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
    • E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
    • E01F9/623—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection
    • E01F9/631—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection specially adapted for breaking, disengaging, collapsing or permanently deforming when deflected or displaced, e.g. by vehicle impact
    • E01F9/638—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection specially adapted for breaking, disengaging, collapsing or permanently deforming when deflected or displaced, e.g. by vehicle impact by connection of stud-and-socket type, e.g. spring-loaded

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Signs Or Road Markings (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)

Abstract

A bar type bollard is provided to perform maintenance easy by forming an impact cutting unit on the bottom of a post body and replacing a post body only when damaged by a collision. A bar type bollard comprises a buried foundation(100) buried under the ground, a post body(200) formed on the upper part of the buried foundation in the shape of a bar and projected to be exposed above the ground, an impact cutting unit is formed on the bottom of the post body and composed of a bar binding unit(111) projected upward from the buried foundation, a foundation binding unit(210) formed on the bottom of the post body and fitted to the bar binding unit, and a triangular groove shaped cutting guide groove(220) formed along the outside of the lower part of the post body at the end of the bar binding unit, a foundation block(120) formed in the shape of a box widening toward the bottom face and provided with a deadweight filling unit, a support pipe to hold the buried foundation, a support wall formed vertically between the support pipe and an external wall, a filler injection unit to inject fillers such as water, sand and concrete mortar to the deadweight filling unit and a block seat plate welded to the lower part of the foundation block to seal tightly, and an impact absorbing unit placed on the top of the post body to absorb the impact of a collision to keep pedestrians not to get injured.

Description

봉형 볼라드{A bollard}Rod-shaped bollard {A bollard}

도 1 은 본 발명에 따른 일 실시 예를 보인 분해 사시도.1 is an exploded perspective view showing an embodiment according to the present invention.

도 2 는 본 발명에 따른 일 실시 예를 보인 결합 사시도.Figure 2 is a perspective view showing an embodiment according to the present invention.

도 3 은 본 발명에 따른 일 실시 예의 측 단면도.Figure 3 is a side cross-sectional view of one embodiment according to the present invention.

도 4 는 본 발명에 따른 다른 실시 예를 보인 분해 사시도.Figure 4 is an exploded perspective view showing another embodiment according to the present invention.

도 5 는 본 발명에 따른 다른 실시 예의 측 단면도.5 is a side cross-sectional view of another embodiment according to the present invention.

도 6 은 본 발명에 따른 또 다른 실시 예로 Figure 6 is another embodiment according to the present invention

기둥 몸체의 상단에 충돌완충구를 구비한 것을 보인 사시도.Perspective view showing the impact buffer on the top of the pillar body.

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

100 : 기초매설부100: foundation burial

111 : 봉결속부 112 : 매설봉체111: sealing unit 112: buried rod body

120 : 기초블럭120: foundation block

121: 자중 채움부 122 : 지지관체121: self-filling portion 122: support body

123 : 지지벽체 124 : 채움제 주입부123: support wall 124: filler filler

125 : 블록좌판125: block seat

200 : 기둥 몸체200: pillar body

210 : 기초결속부 220 : 절개 유도홈210: foundation binding unit 220: incision guide groove

300 : 채움제 400 : 볼트 500 : 충돌완충구300: Filler 400: Bolt 500: Crash buffer

본 발명은 봉형 볼라드에 관한 것으로, 더욱 상세하게는 봉형 볼라드를 구성함에 있어서, 몸체의 하부 측에 충격 절단부를 형성하여서 차량 등이 부주의로 충돌시 몸체만을 교체함으로써 그 유지보수를 용이하게 실시할 수 있도록 함을 목적으로 한 것이다.The present invention relates to a rod-shaped bollard, and more particularly, in the construction of rod-shaped bollards, by forming an impact cut on the lower side of the body, it is possible to easily perform maintenance by replacing only the body when a vehicle or the like inadvertently collides. It is for the purpose of making it possible.

일반적으로, 볼라드는 도로의 안전지대 등에 설치하여서 차량의 진입을 방지할 수 있도록 한 것으로서, 근래에 들어서는 차량이 인도에 주차를 하지 못하도록 이를 방지하기 위하여 볼라드를 설치하여 사용하고 있다.In general, the bollard is installed to the road safety zone to prevent the entry of the vehicle, and in recent years has been used to install the bollard to prevent the vehicle from parking in India.

상기한 바와 같은 볼라드는 대부분이 대리석을 봉 형상으로 가공하여 시공하고 있으나, 그 가격이 고가이고 시공이 용이하지 못한 문제점이 있어 스테인레스 등과 같은 금속제를 사용하여 실시하고 있다.As described above, most of the bollards are manufactured by processing marble in a rod shape. However, the bollards are expensive and expensive and are not easily installed.

그러나, 상기한 바와 같은 종래의 금속제 볼라드는 차량 충돌시 쉽게 찌그러지게 되는 데 이의 교체를 위하여는 지면 매설부분까지 굴착 교체하여야 함으로 그 시공에 많은 비용이 소용되는 문제점이 있었다.However, the conventional metal bollard as described above is easily crushed during a vehicle crash, in order to replace it, there is a problem in that a large amount of cost is required for the construction because the excavation replacement to the ground buried part.

특히, 충돌시 지면에 매설된 부분까지 함께 들어 올려져 주변 경계석의 손상까지 유발하는 등의 문제점이 있었다.In particular, there was a problem such as lifting up to the part buried in the ground when the collision caused damage to the surrounding boundary stone.

이에, 본 발명은 상술한 바와 같은 금속제 볼라드가 차량 충돌에 의한 파손시 그 교체가 용이하지 않고 굴착작업을 병행하여야 하는 등 그 유지보수가 용이하지 않은 문제점이 있었다.Accordingly, the present invention has a problem in that the metal bollard as described above is not easy to replace when the metal bollard is damaged by a vehicle collision, and the maintenance is not easy.

즉, 본 발명은 봉형 볼라드에 있어서, 기둥 몸체의 하단부 측에 충격 절단부를 형성한 것이다.That is, in the rod-shaped bollard, the present invention forms an impact cut portion on the lower end side of the pillar body.

따라서, 본 발명은 봉형 볼라드를 구성함에 있어서, 기둥 몸체의 하단부 측에 충격 절단부를 형성함으로써 차량 충돌 등에 의한 파손시 기둥 몸체의 교체를 통하여만 유지보수가 가능하여 그 유지보수가 용이한 것이다.Therefore, in the present invention, in the rod-shaped bollard, the impact cutout is formed on the lower end side of the pillar body so that maintenance is possible only through replacement of the pillar body in case of damage caused by a vehicle collision and the like, and thus the maintenance is easy.

이하, 첨부된 도면에 의하여 상세히 설명하면 다음과 같다.Hereinafter, described in detail by the accompanying drawings as follows.

본 발명은 볼라드가 충돌 파손시 이의 유지보수를 용이하게 실시할 수 있도록 한 것이다.The present invention is to facilitate the maintenance of the bollard in the event of a crash.

즉, 본 발명은 도 1 에 도시된 바와 같이 지면에 매설되는 기초매설부(100)와 상기 기초매설부(100)의 상부에 봉 형상으로 이루어져 지상으로 노출되게 돌출되는 기둥 몸체(200)로 이루어진 봉형 볼라드에 있어서, 상기 기둥 몸체(200)의 하단부 측에 충격 절단부를 형성한 것이다.That is, the present invention is composed of a pillar body 200 which protrudes to be exposed to the ground made of a rod-shaped on the upper portion of the foundation buried portion 100 and the foundation buried portion 100 is embedded in the ground as shown in FIG. In the rod-shaped bollard, an impact cut is formed on the lower end side of the pillar body 200.

여기서, 상기 충격 절단부는 도 3 에 도시된 바와 같이 기초매설부(100)에서 상단으로 돌출된 봉결속부(111)와, 상기 기둥 몸체(200) 하단에 형성되어서 봉결속부(111)에 끼움 결속되는 기초 결속부(210)와, 상기 기초매설부(100)와 기둥 몸체의 결합상태에 있어서 봉결속부(111)의 단부 측 기둥 몸체(200)의 하부 측에 외면을 따라 연속으로 형성된 삼각홈 형상의 절개 유도홈(220)으로 구성한 것이다.Here, the impact cut portion is formed in the bottom fastening portion 111 protruding to the upper end from the foundation buried portion 100, as shown in Figure 3, the lower end of the pillar body 200 is fitted into the binding portion 111. Triangular formed by the continuous binding along the outer surface on the lower side of the end body pillar body 200 of the binding portion 111 in the binding state of the base binding portion 210 and the foundation buried portion 100 and the pillar body to be bound It is composed of a cut guide groove 220 of the groove shape.

그리고, 상기 봉결속부(111)에 끼워 결합된 기초 결속부(210)는 외측에서 볼트(400)를 체결하여 결속되게 실시할 수 있는 것이다.In addition, the basic binding unit 210 inserted into the binding unit 111 can be coupled to the bolt 400 by fastening from the outside.

한편, 본 발명의 다른 실시 예로는 도 1 과 도 2 및 도 3 에 도시된 바와 같이 상기 기초매설부(100)에 하단 면은 폭이 넓고 상단 면은 폭이 좁은 박스 형상으로 내부에 자중 채움부(121)를 형성한 통체로 이루어진 기초블록(120)을 구비한 것이다.Meanwhile, in another embodiment of the present invention, as shown in FIGS. 1, 2, and 3, the bottom surface of the foundation buried portion 100 has a wide width and a top surface thereof has a narrow width in a box shape. It is provided with a base block 120 made of a cylinder formed with (121).

여기서, 상기 기초블록(120)은 도 3 에 도시된 바와 같이 기초매설부(100)의 매설부를 잡아 줄 수 있게 중앙에 지지관체(122)를 형성하고, 상기 지지관체(122)와 외벽 사이에 수직으로 형성되는 지지벽체(123)를 형성하며, 상부에 물과 모래 및 콘크리트 몰탈과 같은 채움제를 자중 채움부로 주입할 수 있게 채움제 주입부(124)를 형성하여 실시할 수 있는 것이다.Here, the foundation block 120 is formed in the center to support the buried portion of the foundation buried portion 100, as shown in Figure 3, the support tube 122 and the outer wall between the The support wall 123 is formed vertically, and the filler may be formed by injecting the filler such as water, sand and concrete mortar into the filler.

한편, 본 발명의 실시에 있어서 상기 채움제 주입부(124)는 기초블록(120)의 상부를 개구 형성하여 실시할 수 있으며, 하부도 개구되게 형성하여 실시할 수 있는 것이다.On the other hand, in the practice of the present invention, the filler injection portion 124 may be performed by forming an upper portion of the base block 120, the lower portion may be formed to be opened.

또한, 본 발명의 실시에 있어서, 도 4 와 도 5 에 도시된 바와 같이 상기 기초블록(120)의 하부에 융착되어 이를 밀봉할 수 있게 한 블록좌판(125)를 구비하여 실시할 수 있는 것이다.In addition, in the practice of the present invention, as shown in Figure 4 and 5 it can be carried out with a block seat plate 125 that is fused to the lower portion of the base block 120 to be sealed.

또한, 본 발명의 실시에 있어서, 도 6 에 도시된 바와 같이 상기 기둥 몸체(200)의 상단에 보행자가 충돌시 이를 완충하여 부상을 방지할 수 있게 감싸 구비되는 충돌완충구(500)를 구비하여 실시할 수 있는 것이다.In addition, in the practice of the present invention, as shown in Figure 6 is provided with a collision buffer 500 is provided on the top of the pillar body 200 is wrapped to prevent the pedestrian when the collision to prevent injury It can be done.

이하, 본 발명의 시공 및 그 사용과정에 대하여 설명하면 다음과 같다.Hereinafter, the construction of the present invention and the use process thereof will be described.

상기한 바와 같이 봉형 볼라드에 있어서, 상기 기둥 몸체(200)의 하단부 측에 충격 절단부를 형성하되, 상기 충격 절단부는 기초매설부(100)에서 상단으로 돌출된 봉결속부(111)와, 상기 기둥 몸체(200)에 하단에 형성되어서 봉결속부(111)에 끼움 결속되는 기초 결속부(210)와, 상기 기초매설부(100)와 기둥 몸체의 결합상태에 있어서 봉결속부(111)의 단부 측 기둥 몸체(200)의 하부 측에 외면을 따라 연속으로 형성된 삼각홈 형상의 절개 유도홈(220)으로 구성한 본 발명을 시공하여 사용함에 있어서 차량 등이 부주의로 충돌하게 되면, 상기 기둥 몸체(200)의 하부 측에 형성한 삼각홈 형상의 절개 유도홈(220)으로 이루어진 충격 절단부가 충격에 대하여 받쳐지는 기초매설부(100)의 봉결속부(111)에 하부 측이 걸려지면서 찢어져 절단되게 되는 것이다.As described above, in the rod-shaped bollard, an impact cut portion is formed on the lower end side of the pillar body 200, wherein the impact cut portion includes a binding bundle 111 protruding upward from the base buried portion 100, and the pillar. An end of the binding unit 111 formed in the lower end of the body 200 to be fitted to the binding unit 111 and the binding unit 210 in a state in which the base buried unit 100 and the pillar body are coupled to each other. In the construction and use of the present invention composed of a triangular groove-shaped cut guide groove 220 continuously formed along the outer surface on the lower side of the side pillar body 200, when a vehicle or the like inadvertently collides with the pillar body 200 Impact cutting part consisting of a triangular groove-shaped induction groove 220 formed on the lower side of the) is torn and cut while the lower side is caught on the binding portion 111 of the foundation buried portion 100 that is supported against impact will be.

이상과 같이 기둥 몸체(200)가 충격 절단부를 중심으로 찢어져 파손됨으로써 기초매설부(100)는 손상을 입지 않은 상태로 보존되어 이의 유지보수시 상기 기둥 몸체(200)의 잔여물인 기초 결속부(210) 만을 해체함으로써 그 유지보수가 완료되는 것이다.As the pillar body 200 is torn and broken around the impact cutting unit as described above, the foundation buried portion 100 is preserved in an undamaged state, and the foundation binding portion 210 which is the residue of the pillar body 200 during its maintenance. The maintenance is completed by dismantling only).

한편, 본 발명의 다른 실시 예와 같이 상기 기초매설부(100)에 하단 면은 폭이 넓고 상단 면은 폭이 좁은 박스 형상으로 내부에 자중 채움부(121)를 형성한 통체로 이루어진 기초블록(120)을 구비하여 실시하게 되면, 그 시공과정에 있어서 지면을 굴착한 후 기초매설부(100)를 콘크리트 타설에 의하여 기초블럭을 형성한 후 2~3일의 양생 기간을 거쳐 시공하여 하는 불편함이 없이 지면을 굴착한 후 기초블럭(120)을 매설하고 모래 또는 물의 채움제를 채워 준 후 지면을 덮고 기둥 몸체(200)를 기초매설부(100)에 결속시킴으로써 그 시공이 신속하게 완료되는 것이다.On the other hand, as in another embodiment of the present invention, the base buried portion 100, the bottom surface is wide and the top surface is a narrow block-shaped base block made of a cylindrical body formed inside the self-weighted filling portion 121 ( 120), it is inconvenient to construct the foundation buried part 100 after the curing period of 2-3 days after excavating the ground in the construction process after forming the foundation block by concrete pouring After excavating the ground without buried the foundation block 120 and filling the sand or water filler, covering the ground and binding the pillar body 200 to the foundation buried part 100 is completed quickly. .

그리고, 상기 기초블록(120)에 기초매설부(100)의 매설부를 잡아 줄 수 있게 중앙에 지지관체(122)를 형성하고, 상기 지지관체(122)와 외벽 사이에 수직으로 형성되는 지지벽체(123)를 형성함으로써 외부 충격에 대한 지지력이 향상되는 것이다.A support wall 122 is formed at the center of the foundation block 120 so as to hold the buried portion of the foundation buried part 100, and is vertically formed between the support pipe 122 and the outer wall. Forming 123 is to improve the bearing capacity for external impact.

따라서, 본 발명은 봉형 볼라드를 구성함에 있어서, 기둥 몸체의 하단부 측에 충격 절단부를 형성함으로써 차량 충돌 등에 의한 파손시 기둥 몸체의 교체를 통하여만 유지보수가 가능하여 그 유지보수가 용이한 것이다.Therefore, in the present invention, in the rod-shaped bollard, the impact cutout is formed on the lower end side of the pillar body so that maintenance is possible only through replacement of the pillar body in case of damage caused by a vehicle collision and the like, and thus the maintenance is easy.

그리고, 상기 기초매설부에 기초블럭을 구비함으로써 그 시공에 있어 시공시간이 획기적으로 단축되는 것이다.In addition, by providing the foundation block in the foundation buried portion, the construction time in the construction is drastically shortened.

또한, 상기 기초블럭에 자중 채움부를 형성하고 기초블럭을 매설 후 자중 채움부에 채움제를 넣어 자중을 증가시킬 수 있도록 함으로써 그 운반 및 시공과정에 있어 중량이 경량화되어 그 시공이 용이한 매우 유용한 것이다.In addition, by forming a self-weight filling portion in the foundation block and embedding the foundation block to the filling agent in the self-weight filling portion to increase the self-weight, the weight is light in the transport and construction process is very useful that the construction is easy. .

Claims (4)

기초매설부(100)와 상기 기초매설부(100)의 상부에 봉 형상으로 이루어져 지상으로 노출되게 돌출되는 기둥 몸체(200)로 이루어진 봉형 볼라드에 있어서,In the rod-shaped bollard consisting of a pillar body 200 protruding to be exposed to the ground made of a rod shape on the upper portion of the foundation buried portion 100 and the foundation buried portion 100, 상기 기둥 몸체(200)의 하단부 측에 충격 절단부를 형성하고,To form an impact cut on the lower end side of the pillar body 200, 상기 충격 절단부는 기초매설부(100)에서 상단으로 돌출된 봉결속부(111)와, 상기 기둥 몸체(200)에 하단 형성되어서 봉결속부(111)에 끼움 결속되는 기초 결속부(210)와, 상기 기초매설부(100)와 기둥 몸체의 결합상태에 있어서 봉결속부(111)의 단부 측 기둥 몸체(200)의 하부 측에 외면을 따라 연속으로 형성된 삼각홈 형상의 절개 유도홈(220)으로 구성하며,The impact cutting unit and the bottom binding portion (111) protruding to the upper end from the foundation buried portion 100, and the bottom binding portion (210) formed at the bottom of the pillar body 200 and fitted to the binding binding portion (111) and In addition, the induction groove 220 of the triangular groove shape continuously formed along the outer surface at the lower side of the pillar body 200 at the end side of the binding portion 111 in a state where the foundation buried part 100 and the pillar body are coupled to each other. Consists of, 상기 기초매설부(100)에 하단 면은 폭이 넓고 상단 면은 폭이 좁은 박스 형상으로 내부에 자중 채움부(121)를 형성한 통체로 이루어진 기초블록(120)을 구비하되, 상기 기초블록(120)은 기초매설부(100)의 매설부를 잡아 줄 수 있게 중앙에 지지관체(122)를 형성하고, 상기 지지관체(122)와 외벽 사이에 수직으로 형성되는 지지벽체(123)를 형성하며, 상부에 물과 모래 및 콘크리트 몰탈과 같은 채움제를 자중 채움부로 주입할 수 있게 채움제 주입부(124)를 형성하고,The base buried part 100 is provided with a base block 120 made of a cylindrical body having a bottom surface having a wide width and a top surface having a narrow width in a box shape having a self-filling portion 121 therein, the base block ( 120 forms a support tube 122 in the center to hold the buried portion of the foundation buried portion 100, and forms a support wall 123 formed vertically between the support tube 122 and the outer wall, Filler injection portion 124 is formed to the upper portion to inject the filler, such as water and sand and concrete mortar into the own weight filler, 상기 기둥 몸체(200)의 상단에 보행자가 충돌시 이를 완충하여 부상을 방지할 수 있게 감싸 구비되는 충돌완충구(500)를 구비하고,When the pedestrian collides with the upper end of the pillar body 200 is provided with a crash buffer 500 is provided to be wrapped to prevent injury, 상기 기초블록(120)의 하부에 융착되어 이를 밀봉할 수 있게 한 블록좌판(125)를 구비한 것을 특징으로 하는 봉형 볼라드.Rod-shaped bollard characterized in that it is provided with a block seat plate (125) fused to the lower portion of the base block 120 to seal it. 삭제delete 삭제delete 삭제delete
KR1020060113753A 2006-11-17 2006-11-17 A bollard KR100801982B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102199697B1 (en) * 2020-07-30 2021-01-07 최귀봉 Vertical drainage material with bending induction means and drain hole

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0131295Y1 (en) * 1995-05-22 1998-12-15 김영상 Form for street lamp poles
KR200172583Y1 (en) 1999-09-22 2000-03-15 박길영 A supporting material for facilities of road
KR200245923Y1 (en) 2001-05-10 2001-10-15 주식회사동일기술공사 A bollard using a rubber fender
KR200403575Y1 (en) 2005-09-30 2005-12-09 주식회사 바우 컨설탄트 Removable bollard for maintenance

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0131295Y1 (en) * 1995-05-22 1998-12-15 김영상 Form for street lamp poles
KR200172583Y1 (en) 1999-09-22 2000-03-15 박길영 A supporting material for facilities of road
KR200245923Y1 (en) 2001-05-10 2001-10-15 주식회사동일기술공사 A bollard using a rubber fender
KR200403575Y1 (en) 2005-09-30 2005-12-09 주식회사 바우 컨설탄트 Removable bollard for maintenance

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102199697B1 (en) * 2020-07-30 2021-01-07 최귀봉 Vertical drainage material with bending induction means and drain hole

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