KR101293969B1 - Steel plate manhole cover method of manufacture - Google Patents

Steel plate manhole cover method of manufacture Download PDF

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Publication number
KR101293969B1
KR101293969B1 KR1020120087035A KR20120087035A KR101293969B1 KR 101293969 B1 KR101293969 B1 KR 101293969B1 KR 1020120087035 A KR1020120087035 A KR 1020120087035A KR 20120087035 A KR20120087035 A KR 20120087035A KR 101293969 B1 KR101293969 B1 KR 101293969B1
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South Korea
Prior art keywords
cover
steel plate
manhole cover
steel sheet
reinforcing member
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KR1020120087035A
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Korean (ko)
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최정환
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주식회사 신양에벤에셀
(주)원광산업
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Priority to KR1020120087035A priority Critical patent/KR101293969B1/en
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/14—Covers for manholes or the like; Frames for covers
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2200/00—Geometrical or physical properties
    • E02D2200/16—Shapes
    • E02D2200/1607—Shapes round, e.g. circle
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00—Materials
    • E02D2300/0026—Metals
    • E02D2300/0029—Steel; Iron
    • E02D2300/0032—Steel; Iron in sheet form, i.e. bent or deformed plate-material

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Abstract

PURPOSE: A manufacturing method for a steel sheet manhole cover is provided to increase rigidity while lightening a weight of the steel sheet manhole cover and to lengthen life by preventing deformation and damage of the steel sheet manhole cover. CONSTITUTION: A manufacturing method for a steel sheet manhole cover comprises as follows. A cover member is formed by cutting a flat steel sheet with a punching press (S100). A frame member is formed by rolling the frame member of a band shape with a roll forming device and welding the frame member so that both ends come into contact (S200). A reinforcing member is cut in order to be inserted into the inner side of the frame member (S300). A support member of a sector shape is formed by cutting the flat steel sheet with the punching press (S400). A body unit is formed by touching the upper part of the support member with the lower part of the frame member and by parallelly arranging and welding the reinforcing member in a space between the upper part of the support member and the inner side of the frame member (S500). The upper part of a cover member touching an inner corner of the frame member and both upper corners of the reinforcing member is connected by turning the body unit inside out after the upper part of the body unit is connected to the cover member with a screw. [Reference numerals] (S100) Step of cutting a cover member; (S200) Step of roll-forming; (S300) Step of cutting a reinforcing member; (S400) Step of cutting a support member; (S500) Step of connecting a body unit; (S600) Step of connecting a cover unit

Description

강판맨홀뚜껑 제조 방법{Steel plate manhole cover method of manufacture}Steel plate manhole cover method of manufacture}

본 발명은 강판맨홀뚜껑 제조방법에 관한 것으로서, 특히 이전에 없든 받침부재에 테두리부재의 하부가 맞대어져 용접이음으로 결합되어지며, 받침부재와 테두리부재의 내측에 보강부재가 평행하게 배열되어 용접이음된 몸체부의 상부로 커버부의 커버부재가 위치결정 나사로 결합되어진 후 용접이음으로 결합되어지도록 한 것이다.The present invention relates to a method for manufacturing a steel plate manhole cover, in particular, the lower portion of the rim member is joined to the support member, which is not previously, is joined by a welding joint, the reinforcement member is arranged in parallel to the inner side of the support member and the rim member weld joint The cover member of the cover portion to the upper portion of the body portion is coupled to the positioning screw and then to be joined by a welding joint.

일반적으로 맨홀은 지하에 매립된 상,하수도관과 통신선로 및 송전선로 등의 지하 케이블의 유지보수를 위해 작업자가 출입할 수 있도록 설치된 것으로서, 대개 관의 굵기나 방향이 전환되는 곳과 기점이나 교차점 또는 길이가 비교적 긴 직선부의 중간에 설치되어있다.In general, manholes are installed to allow workers to enter and maintain underground cables such as water and sewage pipes buried underground and communication lines and power transmission lines. Or it is installed in the middle of the straight part with a comparatively long length.

이러한 맨홀은 맨홀틀의 상부에 주물로 제조된 맨홀뚜껑이 열리고 닫힐 수 있도록 구성되어 있으나, 맨홀뚜껑이 주철재로 형성되어 있음으로써, 이를 제조하기 위해 대부분 용해(전기로)-조형-주입-탈사-출고 및 주물사처리단계를 경유하는 과정에서 주변환경을 오염시키는 문제점과 아울러 무게가 무겁고, 비용이 많이 소요됨과 동시에 생산공장에 대한 제재가 갈수록 심한 문제점이 있었다.This manhole is configured to open and close the manhole cover made of casting on the upper part of the manhole frame, but because the manhole cover is formed of cast iron, it is mostly melted (electrically) -molding-injection-desorption -In addition to polluting the surrounding environment in the process of passing through the factory and foundry sand treatment step, the weight is heavy, expensive and at the same time there are more severe sanctions on the production plant.

또한, 설치후에도 계속되는 주물 부스러기의 잔재로 인하여 주변환경이 계속오염화되는 상태이고, 특히, 주물재료의 제조 특성상 상부가 날카로우며 파손시는 완전히 절단되므로 위해요소가 상존하게 되는 문제점이 있었다.In addition, the surrounding environment continues to be polluted due to the remnants of the casting debris that continues after installation, in particular, the manufacturing characteristics of the casting material has a problem in that the upper part is sharp and completely damaged in case of damage, so that the hazardous elements remain.

한편, 등록실용신안 제449383(2010.6.30)호의 강판맨홀뚜껑이 제안되었고, 제안된 강판맨홀뚜껑은 강판맨홀커버하부에 일렬로 돤 보강부재로 하중을 지탱하였으나, 장기간 사용으로 받침부분의 접촉불균형으로 소음등의 원인이 있었고, 이러한 상태에서 잦은 차량의 통행으로 인한 통행하중이 반복되게 작용하여 강판맨홀커버에의 테두리부재에 크랙이 발생되어 변형 및 파손되는 또 다른 원인이 있었다.On the other hand, the steel plate manhole cover of Korean Utility Model No. 449383 (2010.6.30) was proposed, and the proposed steel plate manhole cover supported the load by the reinforcing members in a line under the steel plate manhole cover, There was a cause of noise, and in this state, the traffic load caused by the frequent traffic of the vehicle was repeated, causing cracks in the rim member of the steel plate manhole cover, which was another cause of deformation and breakage.

또한, 이러한 원인으로 인하여 이를 다시 제조하여 덮는데 따른 인력과 비용이 더 소요되는 또 다른 문제점이 있었다.In addition, due to this cause there was another problem that requires more manpower and cost to manufacture and cover it again.

본 발명은 강판맨홀뚜껑의 무게를 약40% 이상 가볍게 하면서도 강도를 높이되 뚜껑의 실제하중을 받쳐주는 면적을 골고루 분산시켜서 접촉부의 안정성을 최대한 넓게 확보하여 변형 및 파손이 방지되어질 수 있도록 새로운 개념의 3등분된 받침부재를 추가하여 이를 통해 하중의 불균형으로 인한 크랙등 안전사고가 발생되는 것을 방지할 수 있도록 하고, 제조 및 설치 후에 발생되는 주변의 오염을 방지하여 쾌적한 환경을 얻을 수 있도록 한 것이다.The present invention is to increase the strength while lightly weighing more than about 40% of the weight of the steel plate manhole cover evenly to distribute the area supporting the actual load of the lid evenly to secure the stability of the contact as wide as possible to prevent deformation and breakage of the new concept By adding the support member divided into three parts, it is possible to prevent the occurrence of safety accidents such as cracks due to the load imbalance, and to obtain a pleasant environment by preventing the surrounding pollution generated after the manufacture and installation.

본 발명은 몸체부(10)의 상부에 커버부(20)가 맞대어지게 구비된 강판맨홀뚜껑 제조방법에 있어서, 상기 강판맨홀뚜껑은 펀칭프레스에 의하여 평강판(100)으로부터 원판형태를 갖는 커버부재(21)를 얻는 커버부재 절단단계(S100)와; 밴드형태를 갖는 테두리강판(200)이 롤포밍기(RF)에 의하여 링형태로 말아져 양단이 맞대어지게 용접이음되어지는 테두리부재(12)를 얻는 롤 포밍단계(S200)와; 상기 테두리부재(12)의 내측면에 삽입되게 보강부재(14)가 절단되는 보강부재 절단단계(S300)와; 펀칭프레스에 의하여 평강판(100)으로부터 섹터형태를 갖는 받침부재(11)를 얻는 받침부재 절단단계(S400)와; 상기 받침부재(11)의 상부에 테두리부재(12)의 하부가 맞대어지고, 상기 받침부재(11)의 상부와 테두리부재(12)의 내측면 사이의 공간부(13)에 보강부재(14)가 평행하게 배열되어 용접이음으로 몸체부(10)가 얻어지는 몸체부 결합단계(S500) 및; 상기 몸체부(10)의 상부에 커버부재(21)를 맞대어 나사(S)로 결합시킨 후 몸체부(10)를 뒤집어 상기 테두리부재(12)의 내측모서리와 상기 보강부재(14)의 상부 양측 모서리에 맞대어지는 커버부재(21)의 상단부가 용접이음으로 결합되어지는 커버부 결합단계(S600)로 이루어짐을 특징으로 한다.The present invention is a method for manufacturing a steel plate manhole cover provided with the cover portion 20 on the upper portion of the body portion 10, the steel plate manhole cover is a cover member having a disc shape from the flat plate 100 by a punching press Cover member cutting step (S100) to obtain 21; A roll forming step (S200) of obtaining a frame member (12) in which the edge steel sheet (200) having a band shape is rolled into a ring shape by a roll forming machine (RF) so that both ends are welded to each other. Reinforcing member cutting step (S300) that the reinforcing member 14 is cut to be inserted into the inner surface of the frame member 12; A support member cutting step (S400) of obtaining a support member 11 having a sector shape from the flat steel plate 100 by a punching press; The lower portion of the frame member 12 is abutted on the upper portion of the support member 11, the reinforcing member 14 in the space portion 13 between the upper portion of the support member 11 and the inner surface of the frame member 12. Body part coupling step (S500) is arranged in parallel to obtain a body portion 10 by the welding joint; After coupling the cover member 21 to the upper portion of the body portion 10 with screws S, the body portion 10 is turned upside down and the inner edge of the edge member 12 and the upper both sides of the reinforcing member 14. The upper end of the cover member 21 facing the edge is characterized in that it is made of a cover portion joining step (S600) is coupled to the welding joint.

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또한, 상기 커버부재 절단단계(S100) 중 가장자리에 커버나사홀(211)이 동시에 형성되어지도록 하고, 상기 보강부재 절단단계(S300) 중 보강부재(14)는 I형태의 단면을 갖도록 이루어지며, 상기 보강부재(14)의 양측단 상부에 상기 커버나사홀(211)과 중심이 일치되는 나사홀(141)이 형성되어짐을 특징으로 한다.In addition, the cover screw hole 211 is formed at the edge of the cover member cutting step (S100) at the same time, the reinforcing member 14 of the reinforcing member cutting step (S300) is made to have an I-shaped cross section, A screw hole 141 having a center coinciding with the cover screw hole 211 is formed at both upper ends of the reinforcing member 14.

그리고 상기 받침부재 절단단계(S400) 중 펀칭프레스에 의하여 평강판으로부터 얻어지는 받침부재(11)는 3개로 분할되어진 형태를 갖도록 이루어짐을 특징으로 한다.And the supporting member 11 obtained from the flat plate by the punching press of the supporting member cutting step (S400) is characterized in that it is made to have a form divided into three.

본 발명은 받침부재에 테두리부재의 하부가 맞대어져 용접이음으로 결합되어지며, 받침부재와 테두리부재의 내측에 보강부재가 평행하게 배열되어 용접이음된 몸체부의 상부로 커버부의 커버부재가 나사로 결합되어진 후 용접이음으로 결합되어지도록 함으로써, 강판맨홀뚜껑의 무게를 약40% 이상 가볍게 하면서도 강도를 높일 수 있는 효과를 얻을 수 있다.According to the present invention, the lower portion of the rim member is joined to the support member to be joined by a welding joint, and a reinforcing member is arranged parallel to the inner side of the support member and the rim member so that the cover member of the cover member is screwed to the upper portion of the welded joint. By being coupled to the post-weld joint, it is possible to obtain the effect of increasing the strength while reducing the weight of the steel plate manhole cover about 40% or more.

또한, 강판맨홀뚜껑의 변형 및 파손을 방지하여 수명을 더 연장시킬 수 있는 효과를 얻을 수 있다.In addition, it is possible to obtain the effect of further extending the life by preventing deformation and breakage of the steel plate manhole cover.

이를 통해 안전사고가 발생되는 것을 방지할 수 있는 효과를 더 얻을 수 있다.This can be more effective to prevent the occurrence of safety accidents.

그리고 강핀맨홀뚜껑의 제조 및 설치 후에 발생되는 주변의 오염을 방지하여 쾌적한 환경을 얻을 수 있도록 한 것이다.And to prevent the contamination of the surroundings generated after the manufacture and installation of the steel pin manhole cover to obtain a comfortable environment.

도1은 본 발명에 따른 강판맨홀뚜껑의 제조방법을 도시한 순서도.
도2는 본 발명에 따른 강판맨홀뚜껑의 제조방법을 도시한 구성도.
도3은 본 발명에 따른 강판맨홀뚜껑의 사시도.
도4는 본 발명에 따른 강판맨홀뚜껑의 저면 사시도.
도5는 본 발명에 따른 강판맨홀뚜껑의 분해 사시도.
도6은 본 발명에 따른 강판맨홀뚜껑의 종단면도.1 is a flow chart illustrating a method of manufacturing a steel plate manhole cover according to the present invention.
Figure 2 is a block diagram showing a manufacturing method of a steel plate manhole cover according to the present invention.
Figure 3 is a perspective view of a steel manhole cover according to the present invention.
Figure 4 is a bottom perspective view of the steel plate manhole cover according to the present invention.
5 is an exploded perspective view of the steel plate manhole cover according to the present invention.
Figure 6 is a longitudinal cross-sectional view of the steel plate manhole cover according to the present invention.

본 발명의 실시예를 첨부 도면을 참조하여 설명하면 다음과 같다.An embodiment of the present invention will be described with reference to the accompanying drawings.

본 발명에 따른 강판맨홀뚜껑(A)은 강판맨홀프레임(40)의 안착턱(41)에 삽입됨과 동시에 강판맨홀프레임(40)의 상단부와 높이가 일치되게 안착되어지는 몸체부(10)의 상부에 커버부(20)가 맞대어져 결합되게 구성되어 있다.The steel plate manhole cover (A) according to the present invention is inserted into the seating jaw 41 of the steel plate manhole frame 40 and at the same time the upper portion of the body portion 10 is seated to match the height of the upper end of the steel plate manhole frame 40 The cover portion 20 is configured to be coupled to each other.

여기에서, 상기 몸체부(10)는 받침부재(11)의 가장자리에 테두리부재(12)가 맞대어져 용접이음으로 결합되어지고, 상기 받침부재(11)와 테두리부재(12)의 공간부(13)에 보강부재(14)가 평행하게 배열되어 용접이음으로 결합되어지게 구성되어 있다.Here, the body portion 10 is joined to the edge of the support member 11 by the edge member 12 is joined by a welding joint, the space portion 13 of the support member 11 and the edge member 12 Reinforcement member 14 is arranged in parallel is configured to be coupled to the welded joint.

상기 받침부재(11)는 강판으로 이루어진 것으로 섹터형태를 갖도록 형성되어 링의 형태를 갖도록 배열되어 받침부재(11)의 하부 즉, 밑면이 강판맨홀프레임(40)의 안착턱(41)에 맞대어진 상태로 안착되어질 수 있게 형성되어지고, 상기 테두리부재(12)의 하부 강도를 높이며, 접촉부의 안정성을 최대한 확보하여 변형 및 파손되는 것을 방지할 수 있게 구성되어 있다.The supporting member 11 is formed of a steel sheet and is formed to have a sector shape and arranged to have a ring shape, so that the lower portion of the supporting member 11 is opposed to the seating jaw 41 of the steel plate manhole frame 40. It is formed to be seated in a state, it is configured to increase the lower strength of the frame member 12, to secure the maximum stability of the contact portion is configured to prevent deformation and breakage.

이러한 상기 받침부재(11)는 3등분으로 나뉘어지도록 하는 것이 더욱 바람직하고, 섹터형태를 갖는 받침부재(11)의 가장자리에 링형태를 갖는 테두리부재(12)의 하부가 맞대어져 용접이음으로 결합되어지게 구성되어 있다. 이는 강판맨홀뚜껑(A)으로 작용되는 하중을 분산시켜 하중의 불균형을 방지할 수 있게 된다.More preferably, the supporting member 11 is divided into three parts, and the lower portion of the ring member 12 having a ring shape is joined to the edge of the supporting member 11 having a sector shape so as to be joined by a welding joint. It is composed of fork. This disperses the load acting on the steel plate manhole cover (A) to prevent the imbalance of the load.

상기 테두리부재(12)는 밴드형태를 갖는 테두리강판(200)이 롤포밍기(RF)에 의하여 링형태로 말아져 양단이 맞대어진 상태에서 용접이음으로 결합되어 링형태를 갖도록 형성되어 있다.The edge member 12 is formed such that the edge steel plate 200 having a band shape is roll-shaped by a roll forming machine (RF) to be joined by a welded joint in a state where both ends are butted together to have a ring shape.

상기 받침부재(11)의 상부와 테두리부재(12)의 내측 사이의 공간부(13)에는보강부재(14)가 일정한 간격으로 평행하게 배열되어 용접이음으로 결합되어 뒤틀리는 것을 막고 전체적으로 강도가 높아질 수 있게 구성되어 있다.In the space 13 between the upper portion of the support member 11 and the inner side of the frame member 12, the reinforcing members 14 are arranged in parallel at regular intervals so that the joints are joined together by welding joints to prevent warping and the overall strength can be increased. It is configured to be.

상기 보강부재(14)는 테두리부재(12)가 내측으로 변형되는 것을 방지하는 가운데 커버부(20)의 커버부재(21)를 하부에서 받쳐 지지되어지도록 함으로써, 충분한 하중이 안정되게 지지되는 기능이 제공되어질 수 있게 구성되어 있다.The reinforcing member 14 supports the cover member 21 of the cover portion 20 from the bottom while preventing the edge member 12 from being deformed inward, so that a sufficient load is stably supported. It is configured to be provided.

이러한 상기 보강부재(14)는 I형태의 단면을 가지며 길이방향으로 형성되어진 것을 테두리부재(12)의 내측면에 평행한 상태에서 일정한 간격이 유지되어질 수 있는 길이로 절단되어지도록 한다. 상기 보강부재(14)의 양측단 상부에는 위치결정 나사(S)가 결합되어지는 나사홀(141)이 형성되어 있다.The reinforcing member 14 has an I-shaped cross section and is formed in the longitudinal direction so that the reinforcing member 14 is cut to a length that can be maintained at a constant interval in a state parallel to the inner surface of the rim member 12. The upper side of both ends of the reinforcing member 14 is formed with a screw hole 141 to which the positioning screw S is coupled.

상기 커버부(20)는 커버부재(21)가 보강부재(14)와 테두리부재(12)의 상부에 얹혀져 위치결정 나사(S)로 결합되어진 것으로 위치결정 나사(S) 결합 이후에 상기 테두리부재(12)의 내측모서리와 상기 보강부재(14)의 상부 양측 모서리에 맞대어지는 커버부재(21)의 상단부가 용접이음으로 결합되어지는 과정에서 용접이음시 발생되는 열변형으로 인한 비틀리거나 틀어지는 변형을 방지할 수 있게 구성되어 있다. 상기 위치결정 나사(S)는 헥사볼트로 사용하도록 하는 것이 더욱 바람직하다.The cover part 20 is a cover member 21 is mounted on the upper portion of the reinforcing member 14 and the rim member 12 and coupled with the positioning screw (S). The inner edge of the (12) and the upper end of the cover member 21 which is opposed to the upper both side edges of the reinforcing member 14 is twisted or distorted due to the heat deformation generated during the welding joint in the process of joining the weld joint It is configured to prevent. More preferably, the positioning screw S is used as hexabolt.

이와 같은 구성을 갖는 강판맨홀뚜껑이 제조되어지는 과정은 도1 및 도2에 도시된 바와 다음과 같다.The process of manufacturing the steel plate manhole cover having such a configuration is as shown in FIGS. 1 and 2.

먼저, 커버부재 절단단계(S100)로 펀칭프레스에 의하여 평강판(100)으로부터 원판형태를 갖는 커버부재(21)를 얻는다. 이때, 가장자리에 커버나사홀(211)이 동시에 성형되어지도록 한다.First, in the cover member cutting step S100, a cover member 21 having a disc shape is obtained from the flat plate 100 by a punching press. At this time, the cover screw hole 211 is molded at the edge at the same time.

다음, 밴드형태를 갖는 테두리강판(200)이 롤포밍기(RF)에 의하여 링형태로 말아져 양단이 맞대어지게 용접이음되어 테두리부재(12)를 얻는다(롤 포밍단계(S20 0)).Next, the edge steel sheet 200 having a band shape is rolled into a ring shape by a roll forming machine RF so that both ends are welded to each other to obtain an edge member 12 (roll forming step S20 0).

다음, 보강부재 절단단계(S300)로 테두리부재(12)의 내측면에 삽입되게 보강부재(14)가 절단되어진다. 이때, 보강부재 절단단계(S300) 중 절단되어지는 보강부재(14)는 I형태의 단면을 갖도록 하는 것이 바람직하다. 이때, 절단된 보강부재(14)의 양측단 상부에 상기 커버나사홀(211)과 중심이 일치되는 나사홀(141)이 형성되어지도록 한다.Next, the reinforcing member 14 is cut to be inserted into the inner surface of the rim member 12 in the cutting step (S300). At this time, the reinforcing member 14 is cut during the reinforcing member cutting step (S300) is preferably to have a cross section of the I-shape. At this time, the screw hole 141 is formed so that the center of the cover screw hole 211 coincides with both ends of the cut reinforcing member 14.

다음, 펀칭프레스에 의하여 평강판(100)으로부터 섹터형태를 갖는 받침부재(11)를 얻는다(받침부재 절단단계(S400)). 이때, 상기 받침부재 절단단계(S400) 중 펀칭프레스에 의하여 평강판으로부터 얻어지는 받침부재(11)는 3개로 분할되어진 형태를 갖도록 하는 것이 바람직하다.Next, a supporting member 11 having a sector shape is obtained from the flat steel plate 100 by the punching press (support member cutting step S400). At this time, it is preferable that the supporting member 11 obtained from the flat steel plate by the punching press in the supporting member cutting step S400 has a shape divided into three.

다음, 몸체부 결합단계(S500)로 받침부재(11)의 상부에 테두리부재(12)의 하부가 맞대어지고, 받침부재(11)의 상부와 테두리부재(12)의 내측면 사이의 공간부(13)에 보강부재(14)가 평행하게 배열되어 용접이음으로 이루어져 몸체부(10)가 얻어지게 된다.Next, the lower portion of the frame member 12 is abutted on the upper portion of the support member 11 in the body portion coupling step (S500), the space between the upper portion of the support member 11 and the inner surface of the frame member ( 13, the reinforcing members 14 are arranged in parallel to form a welded joint to obtain a body portion 10.

다음, 커버부 결합단계(S600)로 몸체부(10)의 상부에 커버부재(21)를 맞대어 위치결정 나사(S)로 결합시킨 후 몸체부(10)를 뒤집어 테두리부재(12)의 내측모서리와 보강부재(14)의 상부 양측 모서리에 맞대어지는 커버부재(21)의 상단부가 용접이음으로 결합되어짐으로써, 강판맨홀뚜껑이 제조되어지게 된다.Next, the cover member coupling step (S600) to the upper portion of the body portion 10 to the upper surface of the rim member 12 by inverting the body member 10 and then coupled with a positioning screw (S) And the upper end of the cover member 21 which is opposed to the upper both sides edge of the reinforcing member 14 is joined by a welded joint, the steel plate manhole cover is manufactured.

10:몸체부 11:받침부재
12:테두리부재 13:공간부
14:보강부재 20:커버부
21:커버부재 A:강판맨홀뚜껑
S:위치결정 나사
S100:커버부재 절단단계 S200:롤포밍단계
S300:보강부재 절단단계 S400:받침부재 절단단계
S500:몸체부 결합단계 S600:커버부 결합단계10: body portion 11: support member
12: Border member 13: space part
14: reinforcing member 20: cover
21: Cover member A: Steel plate manhole cover
S: Positioning screw
S100: cutting cover member step S200: roll forming step
S300: cutting step of reinforcing member S400: cutting step of supporting member
S500: body unit joining step S600: cover unit joining step

Claims (6)

삭제delete 삭제delete 삭제delete 몸체부(10)의 상부에 커버부(20)가 맞대어지게 구비된 강판맨홀뚜껑 제조방법에 있어서,
상기 강판맨홀뚜껑은 펀칭프레스에 의하여 평강판(100)으로부터 원판형태를 갖는 커버부재(21)를 얻는 커버부재 절단단계(S100)와;
밴드형태를 갖는 테두리강판(200)이 롤포밍기(RF)에 의하여 링형태로 말아져 양단이 맞대어지게 용접이음되어지는 테두리부재(12)를 얻는 롤 포밍단계(S200)와;
상기 테두리부재(12)의 내측면에 삽입되게 보강부재(14)가 절단되는 보강부재 절단단계(S300)와;
펀칭프레스에 의하여 평강판(100)으로부터 섹터형태를 갖는 받침부재(11)를 얻는 받침부재 절단단계(S400)와;
상기 받침부재(11)의 상부에 테두리부재(12)의 하부가 맞대어지고, 상기 받침부재(11)의 상부와 테두리부재(12)의 내측면 사이의 공간부(13)에 보강부재(14)가 평행하게 배열되어 용접이음으로 몸체부(10)가 얻어지는 몸체부 결합단계(S500) 및;
상기 몸체부(10)의 상부에 커버부재(21)를 맞대어 위치결정 나사(S)로 결합시킨 후 몸체부(10)를 뒤집어 상기 테두리부재(12)의 내측모서리와 상기 보강부재(14)의 상부 양측 모서리에 맞대어지는 커버부재(21)의 상단부가 용접이음으로 결합되어지는 커버부 결합단계(S600)로 이루어짐을 특징으로 하는 강판맨홀뚜껑 제조방법.In the manufacturing method of the steel plate manhole cover provided with the cover portion 20 on the upper portion of the body portion 10,
The steel sheet manhole cover is a cover member cutting step (S100) of obtaining a cover member 21 having a disc shape from a flat steel plate 100 by a punching press;
A roll forming step (S200) of obtaining a frame member (12) in which the edge steel sheet (200) having a band shape is rolled into a ring shape by a roll forming machine (RF) so that both ends are welded to each other.
Reinforcing member cutting step (S300) that the reinforcing member 14 is cut to be inserted into the inner surface of the frame member 12;
A support member cutting step (S400) of obtaining a support member 11 having a sector shape from the flat steel plate 100 by a punching press;
The lower portion of the frame member 12 is abutted on the upper portion of the support member 11, the reinforcing member 14 in the space portion 13 between the upper portion of the support member 11 and the inner surface of the frame member 12. Body part coupling step (S500) is arranged in parallel to obtain a body portion 10 by the welding joint;
The cover member 21 is joined to the upper portion of the body portion 10 with a positioning screw S, and then the body portion 10 is turned upside down so that the inner edge of the edge member 12 and the reinforcing member 14 are closed. Steel sheet manhole cover manufacturing method characterized in that the upper end portion of the cover member 21 which is opposed to the upper both side edges is made of a cover portion joining step (S600) is coupled to the welding joint. 제4항에 있어서,
상기 커버부재 절단단계(S100) 중 가장자리에 커버나사홀(211)이 동시에 형성되어지도록 하고, 상기 보강부재 절단단계(S300) 중 보강부재(14)는 I형태의 단면을 갖도록 이루어지며, 상기 보강부재(14)의 양측단 상부에 상기 커버나사홀(211)과 중심이 일치되는 나사홀(141)이 형성되어짐을 특징으로 하는 강판맨홀뚜껑 제조방법.5. The method of claim 4,
The cover screw hole 211 is formed at the edge of the cover member cutting step (S100) at the same time, the reinforcing member 14 of the reinforcing member cutting step (S300) is made to have a cross-section of the I-shape, the reinforcement Steel plate manhole cover manufacturing method, characterized in that the screw hole (141) is formed in the upper center on both sides of the member (14) to coincide with the cover screw hole (211). 제4항에 있어서,
상기 받침부재 절단단계(S400) 중 펀칭프레스에 의하여 평강판으로부터 얻어지는 받침부재(11)는 3개로 분할되어진 형태를 갖도록 이루어짐을 특징으로 하는 강판맨홀뚜껑 제조방법.5. The method of claim 4,
Steel plate manhole cover manufacturing method characterized in that the supporting member 11 obtained from the flat steel plate by the punching press of the supporting member cutting step (S400) is made to have a three divided form.
KR1020120087035A 2012-08-09 2012-08-09 Steel plate manhole cover method of manufacture KR101293969B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080004597U (en) * 2008-07-14 2008-10-14 주식회사 서강 Cover for a drainage
KR100867154B1 (en) 2008-05-16 2008-11-06 (주)휴먼씨엠건축사사무소 Grating
KR200449383Y1 (en) * 2009-12-08 2010-07-07 주식회사 신양에벤에셀 Steel plate manhole cover
KR101051683B1 (en) * 2010-11-29 2011-07-26 (주)우창그레이팅 A heavy load for cover drainage canal

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100867154B1 (en) 2008-05-16 2008-11-06 (주)휴먼씨엠건축사사무소 Grating
KR20080004597U (en) * 2008-07-14 2008-10-14 주식회사 서강 Cover for a drainage
KR200449383Y1 (en) * 2009-12-08 2010-07-07 주식회사 신양에벤에셀 Steel plate manhole cover
KR101051683B1 (en) * 2010-11-29 2011-07-26 (주)우창그레이팅 A heavy load for cover drainage canal

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