KR20090003796A - Manhole - Google Patents

Abstract

A manhole structure for the separation limitation and restoration of a manhole cover is provided to control the water pressure and the gas pressure gathered in an upper part of the inside of a manhole automatically, and to discharge water rapidly by discharging the high-pressure water flowing backward in a manhole in all directions of a manhole cover. A manhole structure for the separation limitation and restoration of a manhole cover comprises a manhole body(101), a hanging projection(101a) formed on the inside of the manhole body, a manhole cover(102) settled on the hanging projection, many joints(110) provided with a fastener coupling hole, a guide groove(112) located in the middle of the joint and formed vertically on the edge of the manhole cover, a fixing plate(121) coupled to the joint by a fastener and provided with a through hole, and a separation preventer(122) provided with a hanging projection and formed on the lower part of the fixing plate.

Description

Manhole Structure for Restraint and Restoration of Manhole Cover {Manhole}

1-An exploded perspective view of the present invention.

2-perspective view of the combination of FIG.

3-V-V sectional drawing of FIG.

4-reference diagram for showing the coupling structure of the manhole cover in the present invention.

5-reference state of operation of the present invention.

* Explanation of symbols for main parts of the drawings

101: manhole body 101a: locking jaw

102: manhole cover 110: coupling portion

110a: fastening means coupling hole 111: insertion groove

111a: lid withdrawal groove 112: guide groove

112a: slope 120: manhole cover release prevention

121: fixed plate 121a: through hole

122: release guard 122a: locking jaw

125: fastening means

The present invention relates to a manhole structure for preventing the departure of the manhole cover, and more particularly to prevent the manhole cover from being separated by the water pressure and gas pressure generated in the manhole as well as the high pressure and gas pressure formed in the manhole When the manhole cover rises horizontally and relates to a manhole structure for preventing the departure of the manhole cover to discharge the water pressure and gas to the outside and to restore in place.

In general, a manhole cover is made at a doorway of a manhole so that a person can enter and exit to inspect facilities buried underground, such as water, sewage, communication facilities, and pavement, so that the manhole cover can be opened and closed as necessary. Especially in the case of sewerage, manhole is an important facility for dredging of sediment in the pipe.

Conventional manhole device having the use as described above is configured to form a locking projection protruding inward in the inner side of the manhole body, the edge of the manhole cover on the locking projection. However, the manhole device has a structure in which only the edge of the manhole cover is supported on the locking jaw, so that high water pressure or high pressure anaerobic gas pressure is generated from the inside of the manhole due to impact or heavy rain during vehicle operation, which is the upper floor of the conduit. The manhole cover has a disadvantage in that it is separated from the manhole body.

As a result, the problem that pedestrians fall into the manhole or the vehicle is caught in the space leaving the manhole cover is damaged or causes a traffic accident.

Therefore, in order to solve the above problems, various lockable manhole covers are being developed to fix the manhole cover in the manhole body by a locking device such as a screw or a bolt.

However, the lockable manhole cover has a common effect of preventing the fall of the pedestrian or worker and preventing the detachment of the manhole cover.However, by locking the manhole cover itself, the release of the manhole cover may be prevented, but the water pressure inside the manhole may be prevented. It was a structure that could not be released, and had weak points such as connection joints between manholes and conduits, resulting in the collapse of settlements.

In addition, the lockable manhole cover is a locking device fastened by tremor by water pressure to release the manhole cover of the upper layer of the conduit as a hydraulic natural pressure as a large amount of rainwater in the manhole during flooding, such as rainy season. The release of the manhole cover was often occurring.

Therefore, as shown in Utility Model Publication No. 20-2005-22574, one side of the manhole cover is formed to form a fitting shaft to be opened and closed from the manhole body, and the other side of the manhole cover prevents the manhole cover from being completely opened. Thereby, the manhole cover has been applied for a water pressure control and a locking function to release the water pressure inside the manhole, but to prevent the manhole cover from being separated, thereby preventing safety accidents such as falling of a pedestrian or vehicle damage.

However, the manhole cover has a structure in which one side of the manhole cover is rotatably opened in a state fixed by the fitting shaft, so that water can only be discharged through the gap of the catching device opposite to the fitting shaft, which causes instantaneous flooding. It is a structure that can not afford a huge amount.

In addition, when the manhole cover is opened once, the manhole cover is not closed until an artificial force of a person is applied in a flipped state, which also has a big disadvantage of a safety accident.

In addition, the manhole cover is a structure that combines the manhole body and the manhole cover to open and close, which inevitably changes the structure of the manhole body, and this has the disadvantage that it can take a huge cost when replacing the manhole.

The present invention has been devised to solve the above problems, forming a plurality of manhole cover departure prevention at even intervals on the outside of the manhole cover but the manhole cover by the manhole cover departure prevention inner surface of the manhole body It is supported by the horizontal rise and fall, so that the manhole cover rises horizontally and discharges the water pressure and gas pressure collected in the upper layer of the manhole, which is the high point of conduit due to the physical natural phenomenon inside the manhole. The purpose of the present invention is to provide a manhole structure for preventing the departure of the manhole cover so that the manhole cover can be restored without providing manpower when the water pressure and gas pressure inside the manhole fall.

In addition, the present invention is to be screwed to the upper surface of the edge of the manhole cover to prevent the fixing of the manhole cover departure prevention means that the thickness of the fixing plate is formed to be equal to the depth of the insertion groove of the coupling portion, the fixing plate does not protrude to the surface of the manhole cover The purpose is to provide a manhole structure for preventing the departure of the manhole cover is configured to be made.

When the present invention for achieving the above object will be described in detail by the accompanying drawings as follows.

1 is a view showing the separation of the manhole structure for preventing the departure of the manhole cover of the present invention, the present invention is a manhole body 101, the locking step 101a formed inside the manhole body 101 and the In the manhole consisting of a manhole cover 102 seated on the locking jaw (101a), the manhole cover 102 is spaced at equal intervals on the upper edge of the manhole cover 102 is formed three or more fastening means coupling hole (110a) A plurality of coupling parts 110 having a guide groove 112 formed in the middle portion of the coupling portion 110 and perpendicular to the side edge of the manhole cover 102, and fastening to the coupling portion 110 The fixing plate 121 coupled by the means 125 and the through-hole 121a is formed, and the separation preventing member 122 having the locking jaw 122a is formed at the lower portion of the fixing plate 121, but the separation prevention member 122 is inserted into the guide groove 112 and the locking jaw 122a is hooked to the inner jaw of the manhole Lid 102 is composed so as not separated from the manhole.

At this time, the coupling part 110 is formed of the insertion groove 111 of the same depth as the thickness of the fixing plate 121 so that the fixing plate 121 does not protrude to the surface of the manhole cover 102. That is, when the manhole cover release prevention unit 120 is coupled to the coupling part 110, the manhole cover release prevention unit 120 is to be fixed by the fastening means 125 on the upper edge of the manhole cover 102 Although, in this case, the insertion groove 111 is formed in the coupling portion 110 so that the fixing plate 121 is inserted, and the fixing plate 121 is fitted into the insertion groove 111 by the fastening means 125. By being coupled to the fixing plate 121 to prevent protruding to the upper portion of the manhole cover 102. This is to solve the disadvantage that the manhole cover 102 is not aesthetically good and also the disadvantage that pedestrians fall on the fixed plate 121 or rattle when the vehicle passes.

In addition, the coupling portion 110 is disposed at equal intervals on the edge of the manhole cover 102, but preferably at least three are formed. This is a configuration for preventing the manhole cover 102 from inclining to one side when the manhole cover detachment prevention part 120 formed in the coupling part 110 is lifted up and down while being supported on the inner surface of the manhole body 101. .

The manhole cover release prevention part 120 is inserted into the insertion groove 111 of the coupling portion 110 and has a fixing plate 121 having a through hole (121a), and the locking step (lower portion of the fixing plate 121) It is composed of a departure prevention member 122 having 122a).

The locking jaw (122a) is formed at the lower end of the departure prevention member 122 and is configured to be caught on the inner jaw of the manhole when the manhole cover 102 is raised.

At this time, the fixing plate 121 is inserted into the insertion groove 111, the fixing plate 121 of the fixing plate 121 to correspond to the fastening means coupling hole (110a) and the fastening means coupling hole (110a) formed on the upper side of the insertion groove (111). As the fastening means 125 is fastened to the through hole 121a formed at one side, the fixing plate 121 is fixed and coupled to the manhole cover 102.

The release preventing member 122 is coupled after the manhole cover 102 is placed on the manhole body 101, and the locking jaw 122a is inserted obliquely into the insertion groove 111 as shown in FIG. When fully inserted, the fixing plate 121 is fixed to the coupling part 110 by the fastening means 125 so that the departure preventing member 122 is in a vertical state. At this time, it is preferable that the inclined surface 112a is formed in the insertion groove 111 to facilitate the insertion of the locking step 122a. Because the locking step (122a) is to maintain the perpendicular to the separation prevention block 122 because the inclined surface (112a) is not formed in the insertion groove 111 because the depth of the insertion groove 111 is inevitably deep structure to be.

As described above, the present invention is lifted up and down along the inner surface of the manhole body 101 as shown in FIG. 5 by the departure prevention member 122, and when raised to a certain height by water pressure or gas pressure. The mandrel cover 102 itself is prevented from being separated from the manhole body 101 by causing the locking jaw 122a formed at the end of the departure preventing member 122 to be caught by the inner jaw of the manhole body 101. It is.

Therefore, the present invention when the manhole cover 102 is greater than the weight of the manhole cover 102 in the manhole when the manhole cover 102 is lifted and the water pressure and gas pressure is discharged to the outside to remove the pressure to support the manhole cover 102 anymore When the manhole cover 102 is vertically lowered by its own weight, that is, the weight corresponding to 40 kg in general, the manhole cover 102 can be restored to its original position.

As described above, the present invention is a manhole cover that is not separated from the manhole main body by the manhole cover release prevention device, and the manhole cover is fixed in a horizontal state while being supported by the inner surface, so that the manhole cover can be vertically raised and lowered so that the manhole is collected in the upper layer. The water pressure and gas pressure can be automatically adjusted, and the high pressure water flowing back inside the manhole can be discharged in all directions of the manhole cover, thereby quickly discharging.

In addition, the present invention has the effect that the vehicle and pedestrians can pass even when the manhole cover is lifted by the water pressure inside, and if the manhole cover is not applied to an artificial force of the worker when the water pressure and gas pressure drop inside, As it is restored to its original position, it has an effect that can prevent a safety accident due to the detachment of the manhole cover.

In addition, the present invention is a structure that changes only the structure of the manhole cover without changing the structure of the manhole body, so that the existing manhole body can be used as it is, so even if the manhole is replaced, only the manhole cover can be replaced, thereby reducing enormous cost and working time. It is a very useful invention that can expect a shortening effect.

Claims (3)

In the manhole consisting of a manhole body, a locking jaw formed inside the manhole body, and a manhole cover seated on the locking jaw,  Three or more spaced apart at equal intervals on the upper edge of the manhole cover, and a plurality of coupling parts having a coupling means coupling hole, and a guide groove formed vertically on the side of the manhole cover edge and positioned in the middle of the coupling part; And a fixing plate coupled to the coupling part by a fastening means and having a through hole, and a release preventing member having a locking jaw formed at a lower portion of the fixing plate, wherein the release preventing member is inserted into the guide groove and the locking jaw is inserted into the inner jaw of the manhole. Manhole structure for restraining and restoring the separation of the manhole cover, characterized in that the hanging manhole cover is configured not to be separated from the manhole. The manhole structure for limiting and restoring the detachment of the manhole cover according to claim 1, wherein the coupling part is formed of an insertion groove having a depth equal to the thickness of the fixing plate so that the fixing plate does not protrude to the surface of the manhole cover. The manhole structure for the separation and restraint of the manhole cover, characterized in that the insertion groove is formed so that the inclined surface is formed to facilitate the insertion of the locking jaw of the separation prevention.

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