KR101051388B1 - manhole cover assembly - Google Patents

manhole cover assembly Download PDF

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Publication number
KR101051388B1
KR101051388B1 KR1020090034298A KR20090034298A KR101051388B1 KR 101051388 B1 KR101051388 B1 KR 101051388B1 KR 1020090034298 A KR1020090034298 A KR 1020090034298A KR 20090034298 A KR20090034298 A KR 20090034298A KR 101051388 B1 KR101051388 B1 KR 101051388B1
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KR
South Korea
Prior art keywords
locking
cover
manhole
manhole cover
circumferential
Prior art date
Application number
KR1020090034298A
Other languages
Korean (ko)
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KR20100115626A (en
Inventor
송인진
Original Assignee
송인진
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Publication date
Application filed by 송인진 filed Critical 송인진
Priority to KR1020090034298A priority Critical patent/KR101051388B1/en
Publication of KR20100115626A publication Critical patent/KR20100115626A/en
Application granted granted Critical
Publication of KR101051388B1 publication Critical patent/KR101051388B1/en

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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/12Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/14Covers for manholes or the like; Frames for covers
    • E02D29/1427Locking devices
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/12Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/14Covers for manholes or the like; Frames for covers
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/12Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/14Covers for manholes or the like; Frames for covers
    • E02D29/1409Covers for manholes or the like; Frames for covers adjustable in height or inclination
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/12Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/14Covers for manholes or the like; Frames for covers
    • E02D29/1436Covers for manholes or the like; Frames for covers with overflow or explosion control means, e.g. check or relief valves
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/04Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F5/06Gully gratings
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/04Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F2005/0416Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps with an odour seal
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/04Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F5/06Gully gratings
    • E03F2005/063Gully gratings with slidable or rotatable locking elements
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/04Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F5/06Gully gratings
    • E03F2005/068Gully gratings with means for enhancing water flow

Abstract

The present invention constitutes a locking means for fixing the manhole cover to the cover frame by inserting a locking rod that rotates through the lock hole on the manhole cover and the locking groove on the cover frame to maintain a firm fixing state of the manhole cover from external force, When the manhole cover can be easily unlocked from the cover frame, the separation operation can be easily achieved, and the inside of the cover frame installed in the sewer manhole can be configured with a odor preventing means to discharge the rainwater into the manhole. At the same time, in the case of a manhole installed at a location where damage due to malodor is expected, the manhole cover assembly is provided to minimize the damage caused by malodor by discharging the malodor or poisonous gas therein to the outside only when a certain pressure or more is exceeded.
Manhole cover, manhole, safety cover, odor prevention, lock

Description

Manhole Cover Assembly {MANHOLE COVER ASSEMBLY}
The present invention relates to a manhole cover assembly, and more particularly, a locking means is formed between the manhole cover and the cover frame installed in the sewer manhole for firmly fixing the manhole cover to the cover frame, and at the same time the inside of the cover frame. The present invention relates to a manhole cover assembly that minimizes damage due to odor by odor preventing means by releasing odor or toxic gas inside a manhole installed at a place where damage due to a residential area or odor is expected. .
In general, manholes are formed to inspect or repair utility facilities such as communication lines, power transmission lines, and various pipes buried underground, and water and sewage pipes. A manhole cover assembly is installed to protect the buried material from the road, as well as to minimize inconvenience in using the road.
The manhole cover assembly is composed of a cover frame fixedly installed in the opening of the manhole, and a disk shaped manhole cover provided to be openable and openable to the cover frame.
That is, the inspection and repair of the inside of the manhole are removed from the cover frame and moved to one side, and then the manhole is opened.
The manhole cover assembly is mainly installed on a road or sidewalk. The manhole cover is formed of a metal weight or applied with a separate locking device to prevent it from being easily separated by an external impact due to the external force applied by a vehicle or a pedestrian. The method of fixing on the cover frame is widely used.
The method for fixing the manhole cover on the cover frame is Republic of Korea Utility Model Registration No. 20-0256664 "Down and open device of the manhole cover", Patent Publication No. 10-0714788 "Manhole coupling for sewerage Technology to fix the manhole cover using bolts.
However, this locking structure is unable to open the manhole cover due to sticking of the bolt due to corrosion or foreign matters due to prolonged use, or the thread of the bolt is worn out or damaged due to repeated impacts, so that the locking function cannot be properly performed. There was a problem.
And the Republic of Korea Patent Publication No. 10-0364514 "manhole cover assembly having a plurality of locks," registered utility model registration No. 20-0306637 "manhole locks" and the like to form a projection on the cover frame It is proposed a technique for fixing the manhole cover by installing a locking hole of the structure coupled to the projection to the manhole cover to be coupled to the projection and the locking hole.
However, unlike the above-described example, the locking structure does not cause a problem due to the bolt, but the breakage of the protrusions and the catches, which are the locking parts, occurs frequently, and the breakage of the protrusions and the catches occurs, the cover frame and the manhole cover. There is a problem that all must be replaced, this also, there is a problem that can not easily open the manhole cover after a long time in the installed state.
In addition, Republic of Korea Registered Utility Model Publication Number No. 0132116 "Manhole", Publication No. 20-0183147 "Manhole Cover Lock", Registration No. 20-0227068 "Automatic Locking Manhole Cover", Publication No. 10-2004-0034347 "Manhole Cover with Locking Function" and Registration Utility Model Publication No. 20-0367424 "Locking device for inner cover of manhole" is provided with a locker part hinged to the manhole cover. A technique has been proposed in which the locker portion is locked to the locking groove portion of the manhole cover frame.
According to this technique, since the damage of the locking groove of the cover frame is relatively less than that of the locker of the manhole cover, the maintenance of the locking device is relatively easy to maintain. have.
However, such a technique also causes a problem that breakage of the locker portion is easily generated and the manhole cover is separated from the cover frame.
On the other hand, among these manhole cover assembly, in particular, in the case of the manhole cover assembly installed in the manhole for sewer pipe is formed so that the rainwater can flow into the sewer pipe through the manhole by forming a plurality of rainwater discharge port.
However, in the case of the manhole cover assembly installed in the sewer manhole, the odor or toxic gas generated inside the manhole is leaked to the outside through the rainwater outlet on the manhole cover, so that pedestrians and other pedestrians such as residential areas and commercial areas There is a problem that the bad odor caused by bad.
The present invention is to solve the problems of the prior art as described above, the problem to be solved by the present invention is that the locking rod is rotated through the lock hole on the manhole cover and the locking groove on the cover frame is inserted into the manhole cover It provides a manhole cover assembly that can be easily removed by constituting a locking means for fixing the manhole cover to maintain a firm fixing state of the manhole cover from external forces, and at the same time easy to unlock the manhole cover from the cover frame if necessary. will be.
Another problem to be solved by the present invention is that the inside of the cover frame is installed in the manhole for sewage pipes to constitute a bad smell prevention means to be discharged into the manhole and at the same time is installed in a position where damage due to bad smell is expected In the case of the manhole, it is to provide a manhole cover assembly that minimizes the damage caused by the odor by allowing the odor or toxic gas inside the discharged to the outside only when a certain pressure or more.
In the manhole cover assembly of the present invention for realizing the technical problem as described above in the manhole cover assembly comprising a manhole cover having a plurality of storm drain and a cover frame for assembling the manhole cover,
It is formed in a cylindrical shape having an opening in the center, a flange portion is buried in the ground along the lower outer circumference, the upper end is formed with an inner circumferential end and the outer circumferential end by forming an installation groove along the circumference, the circumference in the center of the inner circumferential surface Locking jaws are formed along each side, and locking protrusions are formed on both sides of the inner circumferential surface spaced apart from the upper surface of the locking jaw, respectively, and slot-shaped locking grooves are formed on both sides of the inner circumferential surface spaced apart from the upper surface of the respective locking protrusions, respectively. The cover frame is formed; It is formed of a disc-shaped plate, and the installation end is inserted into the installation groove of the cover frame along the periphery of the lower surface, the inner surface of the cover frame between the installation end and the lower surface along the inner periphery of the installation end A manhole cover having a support end supported by the upper inner circumferential surface of the cover frame at the same time as the insertion end into which the main end is inserted, and having slot-shaped locking holes corresponding to the respective lock grooves on both sides of the support end; A safety cover formed on both sides of an outer circumferential surface of the cover frame through a locking protrusion of the cover frame to be supported by the locking jaw, and having a plurality of safety frames integrally formed radially inwardly; A rotating rod is installed on a cross section of the manhole cover through a through hole, and a locking rod is installed at a lower end of the rotating rod so that a locking rod is inserted through the locking hole and the locking groove according to the rotation of the rotating rod to cover the manhole cover. Locking means fixed to the cover frame; A funnel-shaped water collecting pipe is formed at the lower portion of the safety cover and is supported on the locking jaw of the cover frame, and a water collecting pipe is formed at the lower portion of the water collecting pipe through an extension pipe to discharge the rainwater into the sewage pipe. It includes a odor preventing means to discharge to.
It is preferable to form extraction holes on both sides of the edge on the manhole cover.
The locking means is rotatably inserted into a through hole formed on an end surface of the manhole cover with a sealing ring in the center thereof, and a ring groove is formed on an outer circumferential surface corresponding to the upper and lower ends of the through hole of the manhole cover. A rotation rod fitted with a stop ring and fixed in the axial direction with respect to the through hole, and having an upper end formed with a hexagonal head; It is fixed to the fixing pin in the state fitted to the lower end of the rotating rod, it may be made of a locking rod which is integrally rotated and inserted into the locking groove through the locking hole.
In addition, the odor preventing means is formed in the shape of a funnel to form an extension along the upper periphery, the extension portion is fitted through the locking projection of the cover frame from the lower portion of the safety cover and the locking grooves on both sides to be supported by the locking jaw A collecting pipe forming; It is formed as a trapezoidal tub that is assembled through the extension pipe portion extending downward in the lower center of the water collecting pipe, both sides of the inclined surface constitutes a rainwater discharge plate operating a hinge, the lower both sides as a water collecting container constituting a gas discharge plate operating a hinge. It can be made.
Here, the water collecting pipe, the water collecting container, the rainwater discharge plate and the gas discharge plate are preferably made of a plastic material.
As described above, according to the manhole cover assembly according to the present invention, a lock rod that rotates through a lock hole on the manhole cover and a lock groove on the cover frame is inserted into the cover frame from the external force by locking means for fixing the manhole cover to the cover frame. This ensures that the manhole cover stays firmly secured without detachment or removal.
At the same time, when the maintenance, inspection, and other work is required, the lock rod can be easily removed from the lock hole and the lock groove by rotating the rotating rod, thereby easily releasing the lock state of the manhole cover from the cover frame, thereby simplifying the detaching operation. There is an advantage to that.
In addition, when the manhole cover assembly according to the present invention is installed in the sewer manhole, rainwater is discharged into the manhole through the odor prevention means configured in the cover frame, and at the same time, the manhole of the region rarely In order to leak odor or toxic gas to the outside, manholes installed in areas expected to be damaged by odor, such as residential areas or commercial districts, are discharged to the outside only when the odor or toxic gas inside is above a certain pressure. By inducing it has the advantage of minimizing the damage caused by odors to pedestrians.
Hereinafter, the configuration and operation according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
1 is an assembled perspective view of a manhole cover assembly according to an embodiment of the present invention, Figure 2 is an exploded perspective view of a manhole cover assembly according to an embodiment of the present invention.
As shown in the accompanying drawings, the manhole cover assembly 1 according to the present embodiment is basically a manhole cover 3 having a plurality of storm drains H1 and a cover embedded in the ground on the manhole for assembling them. The frame 5 is provided.
First, the cover frame 5 according to the present embodiment is formed in a cylindrical shape having an opening in the center thereof.
A flange portion F is buried in the ground along a lower outer circumferential surface of the cover frame 5, and an upper circumferential end E1 and an outer circumferential end E2 are formed at an upper end thereof by an installation groove G1 along the circumferential surface thereof. ).
At this time, in the installation groove (G1), as shown in Figure 2, a circular ring-shaped packing (P) is press-installed.
A locking jaw T1 is formed at the center of the inner circumferential surface of the cover frame 5 along the circumference thereof, and the locking protrusions T2 protrude inward on both sides of the inner circumferential surface spaced a predetermined distance from the upper surface of the locking jaw T1. It is formed.
In addition, the cover frame (5) is formed with slot-shaped locking grooves (S1) on both sides on its inner circumferential surface spaced a predetermined distance from the upper surface of each of the engaging projections (T2).
In addition, the manhole cover 3 is formed of a disc-shaped plate, and approximately 10 rainwater discharge ports H1 are formed on the cross section along the circumferential direction.
Along the periphery of the lower surface of the manhole cover 3, as shown in FIG. 4, an installation end E3 inserted into the installation groove G1 of the cover frame 5 protrudes downward.
In addition, an insertion groove into which the inner circumferential end E1 of the cover frame 5 is inserted into the manhole cover 3 between the mounting end E3 and its lower surface along the inner circumference of the mounting end E3. While forming (G2), at the same time, a support end E4 supported on the upper inner circumferential surface 7 of the cover frame 5 is formed.
At this time, in the insertion groove (G2), as shown in Figure 2, a circular ring-shaped packing (P) is press-installed.
Here, the upper inner circumferential surface 7 of the cover frame 5 and the outer circumferential surface 9 of the support end E4 supported in contact therewith are formed in contact with each other by being inclined.
In addition, slot-shaped locking holes S2 are formed at both sides of the support end E4 of the manhole cover 3 to correspond to the respective locking grooves S1 formed in the cover frame 5.
In addition, on the manhole cover 3, as shown in FIG. 2, the ejection tool H2 is formed on both sides of the edge so that the manhole cover 3 can be easily taken out from the cover frame 5. .
And a safety cover 11 is configured between the cover frame 5 and the manhole cover 3, the safety cover 11, as shown in Figure 2, the engaging projection ( The locking grooves G3 are formed on both sides of the outer circumferential surface of the outer surface to be supported by the locking step T1 by being inserted through T2, and a plurality of safety frames 13 are formed integrally radially integrally.
On the other hand, between the manhole cover 3 and the cover frame 5 of the above-described configuration is composed of two locking means 20, the locking means 20, as shown in Figures 2 and 3, The rotating rod R1 is installed on the end surface of the manhole cover 3 through the through hole H3, and the locking rod R2 is installed at the lower end of the rotating rod R1, according to the rotation of the rotating rod R1. The lock rod R2 is inserted through the lock hole S2 and the lock groove S1 to fix the manhole cover 3 to the cover frame 5.
The specific configuration of the locking means 20 is rotatable in the through-hole (H3) formed on the cross-section of the manhole cover 3 in the state that the rotary rod (R1) is fitted with the seal ring 21 in the center thereof. Is inserted.
At this time, by forming a ring groove G4 on the outer circumferential surface of the rotary rod R1 corresponding to the upper and lower ends of the through hole H3 of the manhole cover 3, the rotary rod R1 is inserted into the stop ring 23. It is fixed in the axial direction with respect to the through hole H3.
The rotating rod (R1) is formed at the top of the through hole (H3) on the manhole cover 3, the upper end is formed of a hexagonal head 25, the operator rotates with the tool mounted on the hexagonal head (25) It is configured to be able to rotate the rod (R1).
In addition, the lower end of the rotating rod (R1) is fixed in the rotational direction by the fixing pin 27 in a state in which the locking rod (R2) is fitted to rotate integrally with the rotating rod (R1) through the locking hole (S2). Operate to be inserted or removed in the locking groove (S1).
And the odor prevention means 30 is formed in the lower portion of the safety cover 11, the odor prevention means 30, as shown in Figures 2 and 5 and 6, the lower portion of the safety cover 11 In the collecting frame 35 of the funnel-shaped collecting pipe 31 supported by the locking step (T1) of the cover frame 5, and through the extension pipe portion 33 in the lower portion of the collecting pipe 31 Rainwater is discharged into sewage pipes, and internal toxic gases are discharged to the outside when a certain pressure is exceeded.
The specific configuration of the odor preventing means 30 forms an extension 37 along the upper circumference of the funnel-shaped water collecting pipe 31, and the extension portion 37 is formed at the lower portion of the safety cover 11. The locking grooves G3 are formed at both sides of the cover frame 5 so as to be inserted through the locking protrusions T2 to be supported by the locking projections T1.
In addition, in the center of the lower portion of the collecting pipe 31, the collecting container 35 is formed in a trapezoidal tubular shape assembled through the extension pipe portion 33 extending downward.
The sump 35 is configured such that the rainwater discharge plate P1 hinged to both inclined surfaces thereof rotates outward, and the gas discharge plate P2 hinged on both lower sides of the sump 35 rotates inward. It is composed.
Here, it is preferable that both the collecting pipe 31, the collecting container 35, and the rain discharge plate P1 and the gas discharge plate P2 are made of a plastic material.
Therefore, the operation of the manhole cover assembly 1 having the configuration as described above, as shown in FIGS. 6 and 7, the cover frame 5 on the ground 40 corresponding to the manhole M on the sewer pipe. And embedding the cover frame 5 in a state in which the odor preventing means 30, the safety cover 11 and the manhole cover 3 are sequentially installed, as shown in FIG. 7, the rotating rod R1. By installing and rotating a tool in the hexagonal head 25 of the lock rod (R2) is rotated and inserted through the locking hole (S2) and the locking groove (S1) to the manhole cover (3) to the cover frame (5) Will be fixed).
In this state, as shown in FIG. 8, when rainwater flows in through the rainwater discharge port H1 on the manhole cover 3, the rainwater passes through the safety cover 11 to collect the water collecting pipe 31 and the water collecting tank 31. 35) is discharged to the sewer pipe while pushing the rainwater discharge plate (P1) to the outside.
On the other hand, as shown in Figure 9, when the odor, such as toxic gas generated in the sewage pipe is filled in the manhole (M) more than a certain pressure, the toxic gas is the gas of the bottom of the sump (35) by the pressure The discharge plate P2 is discharged to the outside through the rainwater discharge port H1 on the manhole cover 3 via the water collecting container 35 and the water collecting pipe 31.
At this time, the odor preventing means 30 is applied to the manhole cover assembly (1) on the manhole (M) is installed in the area expected to damage due to odor due to frequent pedestrian traffic, such as residential areas or commercial districts therein Induces odor such as poisonous gas to be discharged to the outside only when it exceeds a certain pressure.
That is, as usual, when the odor such as toxic gas in the manhole (M) is below a certain pressure, the human body leaks to the outside through the manhole (M) in a rare area, and the toxic gas in the manhole (M) is constant Only when the pressure is formed more than the pressure is discharged through the manhole (M) of the expected damage due to the odor, thereby minimizing the damage caused by the odor to pedestrians in normal times.
The detailed description of the invention has been described with reference to specific embodiments of the invention, but the invention is not limited thereto, and one having ordinary skill in the art to which the invention pertains without departing from the concept of the invention. It is obvious that modification or change in various forms by the also included in the claims of the present invention.
1 is an assembled perspective view of a manhole cover assembly according to an embodiment of the present invention.
2 is an exploded perspective view of a manhole cover assembly according to an embodiment of the present invention.
3 is an enlarged perspective view of the locking means applied to the manhole cover assembly according to the embodiment of the present invention shown in part A of FIG.
4 is a bottom perspective view of a manhole cover applied to a manhole cover assembly according to an embodiment of the present invention.
5 is a bottom perspective view of the odor preventing means applied to the manhole cover assembly according to the embodiment of the present invention.
FIG. 6 is an assembled cross-sectional view of the manhole cover assembly taken along the line B-B of FIG. 1.
7 is a state diagram of the use of the locking means applied to the manhole cover assembly according to an embodiment of the present invention.
8 and 9 is an operation state diagram of the odor prevention device applied to the manhole cover assembly according to an embodiment of the present invention.

Claims (5)

  1. A manhole cover assembly comprising a manhole cover having a plurality of storm drains and a cover frame for assembling the manhole cover,
    It is formed in a cylindrical shape having an opening in the center, a flange portion is buried in the ground along the lower outer circumference, the upper end is formed with an inner circumferential end and the outer circumferential end by forming an installation groove along the circumference, the circumference in the center of the inner circumferential surface Locking jaws are formed along each side, and locking protrusions are formed on both sides of the inner circumferential surface spaced apart from the upper surface of the locking jaw, respectively, and slot-shaped locking grooves are formed on both sides of the inner circumferential surface spaced apart from the upper surface of the respective locking protrusions, respectively. The cover frame is formed;
    It is formed of a disc-shaped plate, and the installation end is inserted into the installation groove of the cover frame along the periphery of the lower surface, the inner surface of the cover frame between the installation end and the lower surface along the inner periphery of the installation end A manhole cover having a support end supported by the upper inner circumferential surface of the cover frame at the same time as the insertion end into which the main end is inserted, and having slot-shaped locking holes corresponding to the respective lock grooves on both sides of the support end;
    A safety cover formed on both sides of an outer circumferential surface of the cover frame through a locking protrusion of the cover frame to be supported by the locking jaw, and having a plurality of safety frames integrally formed radially inwardly;
    A rotating rod is installed on a cross section of the manhole cover through a through hole, and a locking rod is installed at a lower end of the rotating rod so that a locking rod is inserted through the locking hole and the locking groove according to the rotation of the rotating rod to cover the manhole cover. Locking means for fixing the cover frame;
    A funnel-shaped water collecting pipe is formed at the lower portion of the safety cover and is supported on the locking jaw of the cover frame, and a water collecting pipe is formed at the lower portion of the water collecting pipe through an extension pipe to discharge the rainwater into the sewage pipe. Manhole cover assembly comprising a; odor preventing means for discharging to.
  2. In claim 1,
    On the manhole cover
    Manhole cover assembly, characterized in that forming the ejection holes on both sides of the edge.
  3. In claim 1,
    The locking means
    The seal ring is inserted into the center, and is rotatably inserted into the through hole formed on the cross section of the manhole cover, and a ring groove is formed on the outer circumferential surface corresponding to the upper and lower ends of the through hole of the manhole cover to insert the stop ring. Is fixed in the axial direction with respect to the hole, the top is a rotating rod formed of a hexagonal head;
    The manhole cover assembly, characterized in that the lock rod is fixed to the fixing pin in the state fitted to the lower end of the rotation rod, and integrally rotated with the rotation rod is inserted into the locking groove through the locking hole.
  4. In claim 1,
    The odor prevention means
    It is formed in the shape of a funnel to form an extension along the upper periphery, the extension portion is the water collecting pipe for forming a locking groove on both sides to be supported by the locking step is inserted through the locking projection of the cover frame from the lower portion of the safety cover;
    It is formed as a trapezoidal tub that is assembled through the extension pipe portion extending downward in the lower center of the water collecting pipe, both sides of the inclined surface constitutes a rainwater discharge plate operating a hinge, the lower both sides as a water collecting container constituting a gas discharge plate operating a hinge. Manhole cover assembly, characterized in that made.
  5. The method of claim 1 or 4,
    The collection pipe and the sump and rainwater discharge plate and gas discharge plate
    A manhole cover assembly comprising a plastic material.
KR1020090034298A 2009-04-20 2009-04-20 manhole cover assembly KR101051388B1 (en)

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KR1020090034298A KR101051388B1 (en) 2009-04-20 2009-04-20 manhole cover assembly
PCT/KR2010/002291 WO2010123217A2 (en) 2009-04-20 2010-04-14 Manhole cover assembly

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KR101051388B1 true KR101051388B1 (en) 2011-07-22

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KR101270370B1 (en) 2011-07-08 2013-06-05 진두남 A blind board apparatus of bad smell decreasign for sewage box
KR101606836B1 (en) * 2015-09-22 2016-03-28 주안글라스화이바 주식회사 Combination structure with the safety net consisting of a manhole lid locking device
KR20170011034A (en) * 2015-07-21 2017-02-02 주식회사 국보성금속 Coupling device of manhole covers

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CN103205985A (en) * 2012-12-24 2013-07-17 沈阳嘉润市政工程有限公司 Mechanical processing mute manhole cover
CN105113546A (en) * 2015-09-17 2015-12-02 成都易信达科技股份有限公司 Backflow well lid
CN109914575B (en) * 2019-03-28 2020-08-14 湖北中宜建设工程有限公司 Anti-drop inspection shaft lid for municipal administration environmental protection based on synchronous linkage principle

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