JP4219074B2 - Repair cover for existing public fence - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a repair cover for an existing public fence that repairs an existing public fence buried in the ground.
[0002]
[Prior art]
In an area where public sewerage is laid, an existing public pit 2 shown in FIG. 9 is attached at the most downstream position of the drainage pipe 1 of each household in a state of being buried in the ground.
[0003]
In the past, public sewers have been formed mainly in a large size, that is, in a cylindrical shape with concrete having an inner diameter of 450 mm or more, where the public sewer has been laid for a long time. And after embedding the main body 5 having the opening 4 formed in the ground, the upper frame body 6 and the lid support body 7 are sequentially stacked on the main body 5 to adjust the height to the ground surface. A mortar is poured into the rivet body 5 to form a concave groove-shaped invert portion 8 at the bottom of the heel body 5. The invert portion 8 communicates the inlet 3 and the outlet 4.
[0004]
For this reason, the existing public fence 1 is obtained by sequentially stacking the upper frame body 6 and the lid support body 7 on the fence body 5, and for joining the fence body 5, the upper frame body 6 and the lid support body 7. In general, mortar is used to fix water tightly.
[0005]
And when this existing public fence 2 is used for a long period of time, the mortar used for joining each joint part peels off. Will invade. For this reason, it is necessary to repair each of these joints.
[0006]
[Problems to be solved by the invention]
However, in order to repair the existing public pit 2, the existing public pit 2 and the drainage pipe 1 are buried in the ground, and the existing public pit 2 is buried in a narrow space due to housing circumstances. It is often done. For this reason, especially when concrete is struck on the ground surface, there is a problem that the work of repairing the existing public fence 2 is not easy.
[0007]
This invention is made in view of such a point, and it aims at providing the repair cover for existing public fences which can perform the repair work of an existing public fence easily.
[0008]
[Means for Solving the Problems]
The repair cover for an existing public fence according to claim 1 is disposed in an existing public fence buried in the ground and provided with an upstream inlet, a downstream outlet and an invert portion. A cover for repairing an existing public fence, which is disposed in the existing public fence and is substantially half- covered from above by bringing both end edges into contact with both sides of the invert part of the existing public fence. A cylindrical cover main body, a cleaning pipe receptacle provided above the cover main body and opened upward, and provided on the side of the cover main body, the cover main body being disposed in the existing public fence. In the installed state, the inflow communication portion that communicates with the inflow port of the existing public pit and the side of the cover main body, and the cover main body disposed in the existing public pit, The outlet communicating part that communicates with the outlet It is those that are Bei.
[0009]
Then, in this configuration, on both sides of the inverter unit of the existing public桝内embedded in the ground, existing substantially cover body for covering the invert portion is abutted against both side front end edge of the cover body semicylindrical from above By disposing on the public fence , the cover body covers the invert part of the existing public fence from above , and the inlet communication section and the outlet communication section communicate with the inlet and outlet of the existing public fence, respectively. For this reason, since the existing public fence is repaired only by arranging the cover body in the existing public fence, the repair work of the existing public fence becomes easy.
[0010]
The repair cover for an existing public fence according to claim 2 is the repair cover for an existing public fence according to claim 1, which is disposed in the existing public fence and fitted into a cleaning pipe receptacle of the cover body. A cleaning tube that extends the receiving port upward, and an inner lid that is fitted to the upper portion of the cleaning tube and closes the cleaning tube.
[0011]
In this configuration, when the cleaning tube is fitted to the cleaning tube receiving port of the cover main body in a state where the cover main body is disposed in the existing public fence, the cleaning tube receiving port of the cover main body extends upward. Therefore, even if dirt or the like is accumulated outside the cover main body and the cleaning tube, the inside of the cover main body can be inspected and cleaned. Further, the upper part of the cleaning tube is closed by the inner lid by fitting the inner lid to the upper part of the cleaning tube fitted to the cleaning pipe receiving port of the cover body. For this reason, intrusion of earth and sand etc. with respect to the upper part of a cleaning pipe is prevented. Therefore, earth and sand do not enter the cover body, and the cover body can function normally for a long time.
[0012]
The existing public dredging repair cover according to claim 3 is the existing public dredging repair cover according to claim 1 or 2, wherein at least one of the inlet communication portion and the outlet communication portion is provided with the inlet communication portion. Or the expansion-contraction housing | casing which expands-contracts an outflow port communication part toward the side of a cover main body is attached so that advancing and retreating is possible.
[0013]
In this configuration, the cover main body is disposed in the existing public fence in a state in which the expansion / contraction casing attached to the inlet communication section and / or the outlet communication section of the cover main body is retractable. Since it can do, the operation | work at the time of arrange | positioning a cover main body in the existing public fence becomes easy. In addition, by extending the telescopic housing appropriately with the cover body disposed in the existing public fence, the inlet and outlet of the existing public fence are connected at the inlet communication section and the outlet communication section. Therefore, the work at the time of connecting the inflow port and the outflow port becomes easy, and the cover main body can be attached even to an existing public fence having different inner diameter dimensions. Therefore, the repair work of the existing public fence becomes easier.
[0014]
The repair cover for an existing public fence according to claim 4 is the repair cover for an existing public fence according to claim 1 or 2, wherein the cover body has an outer diameter dimension substantially equal to an inner diameter dimension of the existing public fence.
[0015]
In this configuration, since the cover body has an outer diameter dimension substantially equal to the inner diameter dimension of the existing public fence, by disposing the cover body in the existing public fence, the substantially entire area in the existing public fence is closed. To do. For this reason, since the operation | work which adjusts the attachment position of a cover main body, etc. becomes easy, the repair operation | work at the time of repairing the existing public fence with a cover main body becomes easy.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the structure of the first embodiment of the existing public fence repair cover of the present invention will be described with reference to FIGS. 1 to 3.
[0017]
In FIGS. 1 to 3, reference numeral 11a denotes an existing public dredging repair cover, and the existing public dredging repair cover 11a is, for example, an existing drainage dredger that is connected to the drain pipe 21 of each household and buried underground. It is arranged in the existing public fence 31 for repairing the existing public fence 31.
[0018]
The existing public urn 31 includes an urn main body 32 formed of concrete into a substantially cylindrical shape. In addition, an inflow port 33 communicating with the drainage pipe 21 is formed on the upstream side of the dredging main body 32, and a downstream side of the dredging main body 32 opposite to the inflow port 33 is formed from the inflow port 33. An outlet 34 that has a large inner diameter and communicates with the drain pipe 21 is formed.
[0019]
Further, an upper frame body 35 having an opening located on the lower side on the heel body 32 has an inner diameter dimension substantially the same as that of the heel body 32, and the inner peripheral portion is reduced in diameter as it advances upward. However, for example, mortar as a bonding agent is used and is connected in a watertight state in a concentric state. The upper frame 35 is formed in a substantially cylindrical shape from concrete.
[0020]
Further, on the upper side of the upper frame 35, a lid support 36 formed of concrete in a cylindrical shape having substantially the same diameter as the opening on the upper side of the upper frame 35 is formed concentrically using mortar. It is connected in a watertight manner in a state where it is placed on In addition, an opening 37 for cleaning or inspecting the inside of the existing public fence 31 is opened from the outside on the upper side of the lid support 36, and the opening 37 is formed in a substantially disc shape by casting or the like. A lid body (not shown) formed in the above is detachably fitted.
[0021]
A mortar is poured into the main body 32 of the existing public main body 31 to form an inverted portion 38 having a groove shape that communicates the inlet 33 and the outlet 34 of the main body 32. Further, on both sides of the invert portion 38, a pair of inclined portions 39 inclined toward the gradual upward him to go to the side are formed, respectively. Further, the invert portion 38 is formed with a flowing water gradient that gradually inclines downward from the inflow port 33 side to the outflow port 34 side.
[0022]
Furthermore, the existing public fence repair cover 11a is formed of, for example, PVC, that is, a synthetic resin such as polyvinyl chloride, and includes a cover body 41a formed in a substantially semi-cylindrical shape . The cover body 41a is formed so that the invert portion 38 of the existing public fence 31 can be covered by the cover body 41a in a state where the cover body 41a is disposed on the inclined portion 39 in the existing public fence 31. Has been.
[0023]
Further, on both ends of the cover body 41a, in a state where the cover body 41a is disposed on the existing public basins 31, an inlet communicating respectively communicating the inlet 33 and outlet 34 of the existing public basins 31 A portion 42a and an outlet communication portion 43a are respectively formed. A cleaning tube receiving port 44a projecting upward is opened at a substantially upper central portion of the cover body 41a.
[0024]
Then, the inlet communicating portion 42a of the cover body 41a, stretching the collar body 51 to the inlet port communicating portion 42a stretched or squeezed is mounted for forward and backward. The stretchable casing 51 is made of, for example, PVC, that is, a synthetic resin such as polyvinyl chloride, into a flat plate having an arc cross section having an outer diameter that is substantially the same as the inner diameter of the inlet communication portion 42a. . Further, the distal end portion of the telescopic casing 51 is formed in an arc shape having a curvature substantially equal to the inner diameter dimension of the main body 32 of the existing public fence 31, and the outer peripheral portion of the distal end portion of the telescopic casing 51 A projecting portion 50 used for advancing and retracting the telescopic casing 51 is provided at the substantially center along the tip portion.
[0025]
In addition, for example, three substantially circular screw holes 54 through which the threaded portions 53 of the bolts 52 are inserted are formed at positions spaced along the circumferential direction of the outer peripheral surface of the telescopic casing 51. Furthermore, in a position spaced along the circumferential direction of the outer peripheral surface of the inflow port communication portion 42a, that is, in a state where the expandable housing 51 is attached to the inflow port communication portion 42a, each screw hole 54 of the expandable housing 51 For example, three screw insertion holes 55 each having an elongated hole shape are formed in the cover main body 41a in the expansion / contraction direction of the expansion / contraction casing 51 .
[0026]
Then, the screw portions 53 of the bolts 52 are inserted into the screw holes 54 from the inner surface side of the telescopic casing 51, and the screw portions 53 of the bolts 52 are inserted into the screw insertion holes 55 of the inlet communication portion 42a. In addition, by attaching the butterfly screw 56 to the threaded portion 53 of each bolt 52, the inflow port communicating portion 42a is formed so as to be able to advance and retreat sideways in the telescopic casing 51.
[0027]
Further, a substantially cylindrical cleaning tube 61 for extending the cleaning tube receiving port 44a upward is fitted and bonded to the cleaning tube receiving port 44a of the cover body 41a. The cleaning tube 61 is molded of, for example, PVC, that is, a synthetic resin such as polyvinyl chloride, and is fitted in the cleaning tube receiving port 44a of the cover body 41a disposed in the existing public fence 31. The entire cleaning tube 61 is formed in a length dimension that is disposed in the existing public fence 31. Further, on the peripheral surface of the cleaning pipe 61, a drain hole 62 for opening rainwater or the like that has entered the existing public fence 31 into the cleaning pipe 61 is formed.
[0028]
And, above the cleaning tube 61, a cleaning port 63 that is an opening extending the cleaning tube receiving port 44a of the cover body 41a is opened, and the cleaning port 63 is formed in a substantially disc shape. The inner lid 64 is detachably fitted. The inner lid 64 is formed of, for example, PVC, that is, a synthetic resin such as polyvinyl chloride. The upper surface of the inner lid 64 has a substantially arc shape for gripping when the inner lid 64 is attached or detached. It is integrally formed with both end portions of the grip portion 65 being connected.
[0029]
Next, the operation of the first embodiment will be described.
[0030]
The existing public dredging 31 connected to the drainage pipe 21 in each household will crack or remove the bonding agent at each joint due to long-term use. When a root or the like has invaded or has invaded, first, the drainage flowing into the drainage pipe 21 is stopped.
[0031]
Next, the lid is removed from the opening 37 of the existing public fence 31, and the inside of the existing public fence 31 is cleaned. At this time, the invert portion 38, the inclined portion 39 and the main body 32 of the existing public fence 31 are cleaned with particular care to dry the existing public fence 31.
[0032]
Then, the existing public upon basins 31 is dry, arranged the existing public basins within the 31 abut against both side front end edge of the cover body 41a to the inclined portion 39 of the side portions of the inverter section 38 the cover body 41a To do. In this state, the cover main body 41a covers the inverted portion 38 of the existing public urn 31 and the front end side of the outlet communication part 43a of the cover main body 41a is brought into contact with the inner surface of the rivet main body 32 so that the outlet communication The portion 43a is communicated with the outlet 34 of the existing public fence 31.
[0033]
Further, the telescopic casing 51 of the inlet communication portion 42a of the cover main body 41a is extended, and the tip of the telescopic casing 51 is brought into close contact with the inner peripheral surface of the main casing 32. Communicate with the inlet 33 of 桝 31. The telescopic housing 51 is positioned and fixed with respect to the inflow port communication portion 42a by using the bolt 52 attached to the telescopic housing 51 and the thumbscrew 56 attached to the bolt 52.
[0034]
Thereafter, the cover main body 41a, the outlet communication portion 43a and the telescopic casing 51, and the invert portion 38, the inclined portion 39, and the hook main body 32 are fixed to the joint using a vinyl chloride bonding agent.
[0035]
Then, the cleaning tube 61 is fitted and bonded to the cleaning tube receiving port 44a of the cover body 41a, and the inner lid 64 is further fitted to the cleaning port 63 of the cleaning tube 61.
[0036]
Next, mortar as a filler is injected from the opening 37 of the existing public fence 31 into the existing public fence 31 and outside the cover main body 41a and the cleaning tube 61. At this time, the mortar is injected up to a position where the drain hole 62 of the cleaning tube 61 is not buried, that is, a height position where the entire cover body 41a is buried.
[0037]
Then, the lid is fitted into the opening 37 of the existing public fence 31. Thereafter, the waste water is caused to flow into the drain pipe 21 to which the existing public pit 31 is connected.
[0038]
As described above, according to the first embodiment, the cover main body 41a is disposed in the existing public fence 31 and the invert portion 38 of the existing public fence 31 is covered with the cover main body 41a. The existing public pit 31 is repaired by connecting the outlet 34 of the existing public pit 31 at the outlet communication portion 43a of the main body 41a, and further connecting the inlet 33 of the existing public ridge 31 by the telescopic casing 51. it can. For this reason, the repair work of the existing public fence 31 can be performed easily and quickly by using the cover body 41a.
[0039]
Then, by attaching the telescopic housing 51 to the inlet communication portion 42a of the cover main body 41a, the cover main body 41a is installed in the existing public housing 31 in a state where the telescopic housing 51 is retracted with respect to the inlet communication portion 42a. Can be disposed. For this reason, the disposition work of the cover main body 41a with respect to the existing public fence 31 can be facilitated.
[0040]
Further, after the cover main body 41a is disposed in the existing public fence 31, the expansion / contraction casing 51 is appropriately extended so that the expansion / contraction casing 51 is in close contact with the inner peripheral surface of the main body 32 of the existing public fence 31. The inlet 33 can be communicated. For this reason, the communication work of the inlet 33 and the outlet 34 of the existing public fence 31 can be performed easily and quickly.
[0041]
Further, when the cleaning pipe 61 is fitted and bonded to the cleaning pipe receiving port 44a of the cover main body 41a with the cover main body 41a disposed in the existing public fence 31, the cleaning pipe receiving port 44a of the cover main body 41a is moved upward. Therefore, the cover body 41a can be inspected and cleaned even if earth and sand are accumulated to some extent outside the cover body 41a as well as in the existing public fence 31.
[0042]
Further, by fitting the inner lid 64 to the cleaning port 63 of the cleaning tube 61 fitted to the cleaning tube receiving port 44a of the cover body 41a, the cleaning tube 61 is closed by the inner lid 64. For this reason, intrusion of dirt and the like into the cleaning tube 61 can be prevented even when dirt and the like enter the existing public fence 31 and outside the cover main body 41a. Therefore, intrusion of earth and sand into the cover main body 41a can be prevented, and the cover main body 41a can function normally for a long period of time.
[0043]
Further, by forming a drain hole 62 in the peripheral surface of the cleaning tube 61, the cover body 41a is disposed in the existing public fence 31, and the cleaning tube 61 is fitted into the cleaning tube receiving port 44a of the cover body 41a. In the state where the inner lid 64 is fitted to the cleaning port 63 of the cleaning tube 61 and rainwater entering the cover main body 41a and the cleaning tube 61, etc. The water enters the cleaning pipe 61 from the hole 62 and flows to the outlet 34 of the existing public fence 31 through the outlet connection part 43 of the cover body 41a. Therefore, it is possible to prevent storage of rainwater or the like that has entered the existing public fence 31 and has entered the cover main body 41a and the cleaning pipe 61.
[0044]
In the first embodiment, the existing public fence 31 is repaired without destroying or removing the existing public fence 31, but the present invention is not limited to such a configuration, and the cover body 41a It is only necessary to cover the invert part 38 of the existing public fence 31 so that the inlet 33 and the outlet 34 of the existing public fence 31 communicate with each other and the existing public fence 31 is repaired.
[0045]
Therefore, for example, as shown in FIGS. 4 and 5, first, a lid body (not shown) is removed from the opening 37 of the lid support body 36 of the existing public fence 31, and the lid support body 36 and the upper frame body 35 are removed. Later, a cover main body 41a is arranged in the main body 32 of the existing public pit 31 to cover the invert portion 38 of the existing public pit 31, and the inlet 33 and the outlet 34 are communicated. The cleaning tube 61 is fitted and bonded to the cleaning tube receiving port 44a of 41a, and the inner lid 64 is fitted to the cleaning port 63 of the cleaning tube 61, and the cover body 41a and the cleaning tube are also inside the bag body 32. Inject mortar or other filler around 61.
[0046]
Next, in a state where the outer surface of the cleaning port 63 of the cleaning tube 61 is inserted, a substantially flat annular receiving plate 71 is embedded in the ground, and a cylindrical lid fitting body 72 is concentrically placed on the receiving plate 71. It is also possible to place the disk-shaped casting lid 74 in a detachable manner in the lid fitting port 73 above the lid fitting body 72 by placing it in an embedded state.
[0047]
Further, the configuration in which the expansion / contraction casing 51 is attached only to the inlet communication portion 42a has been described, but even if the expansion / contraction casing 51 is attached only to the outlet communication portion 43a, the inlet communication portion Even when the telescopic casing 51 is attached to both the inlet 42a and the outlet communication part 43a, the same effects as when attached to the inlet communication part 42a can be obtained.
[0048]
The cleaning tube 61 is fitted into the cleaning tube receiving port 44a of the cover main body 41a disposed in the existing public fence 31, the inner lid 64 is fitted into the cleaning port 63 of the cleaning tube 61, and the cover When the contact portion between the main body 41a, the outlet communication portion 43a and the telescopic casing 51, the invert portion 38, the inclined portion 39, and the rod main body 32 is jointed, the opening 37 of the existing public fence 31 Although the case where mortar is injected into the existing public fence 31 and around the cover main body 41a and the cleaning pipe 61 has been described, sand or residual soil may be used instead of mortar.
[0049]
Next, the second embodiment will be described with reference to FIGS.
[0050]
The existing public fence repair cover 11b shown in FIGS. 6 to 8 is basically the same as the existing public fence repair cover 11a shown in FIGS. 4 and 5, but is formed in a substantially convex arc surface shape. A substantially arc-shaped inlet communication portion 42b that communicates with the inlet 33 of the existing public pit 31 and a substantially arc-shaped outlet communication that communicates with the outlet 34 of the existing public basin 31 on opposite sides of the cover body 41b The portions 43b are respectively formed.
[0051]
The cover body 41b is formed such that the outer diameter of the cover body 41b is substantially equal to the inner diameter of the existing public fence 31. Further, a flange portion 81 that protrudes in each radial direction is formed on the outer peripheral portion of the cover main body 41b. The flange portion 81 is formed so as to contact the inner peripheral surface of the main body 32 of the existing public fence 31 in a state where the cover main body 41b is disposed in the existing public fence 31.
[0052]
Next, the operation of the second embodiment will be described.
[0053]
The existing public fence repair cover 11b shown in FIGS. 6 to 8 is basically the same as the action of the existing public fence repair cover 11a shown in FIGS.
[0054]
First, after removing a lid (not shown) from the opening 37 of the lid support 36 of the existing public fence 31, and removing the lid support 36 and the upper frame 35, a cover body 41b is disposed in the fence body 32. The inflow port 33 and the outflow port 34 of the existing public fence 31 are in close contact with each other through the inflow port communication portion 42b and the outflow port communication portion 43b of the cover body 41b.
[0055]
At this time, the contact portion between the heel main body 32 and the cover main body 41b is joined using mortar, a bonding agent, or the like, and the cover main body 41b is fixed to the invert portion 38 with joints.
[0056]
Next, the cleaning tube 61 is fitted and bonded to the cleaning tube receiving port 44b of the cover body 41b, and then the inner lid 64 is fitted to the cleaning port 63 of the cleaning tube 61.
[0057]
As described above, in the second embodiment, by providing the cover main body 41b in the existing public fence 31, the inlet 33 and the outlet 34 of the existing public fence 31 are communicated with each other. Public fence 31 is repaired. For this reason, the same effect as the existing public fence repair cover 11a shown in FIGS. 4 and 5 can be obtained.
[0058]
Further, since the cover main body 41b has an outer diameter dimension substantially equal to the inner diameter dimension of the main body 32 of the existing public fence 31, the cover main body 41b is disposed in the existing public fence 31, so that the existing public fence 31 The substantially entire area of the invert part 38 can be closed. For this reason, when the existing public fence 31 is repaired, it is possible to cover the invert portion 38 more widely. Therefore, when the existing public fence 31 is repaired by the cover body 41b, a larger internal capacity can be secured. Therefore, the operation of adjusting the attachment position of the cover main body 41b is facilitated, so that the repair work when the existing public fence 31 is repaired by the cover main body 41b can be facilitated.
[0059]
Further, since the flange portion 81 is formed on the outer peripheral portion of the cover main body 41b, when the cover main body 41b is disposed in the existing public fence 31, the flange 81 is arranged inside the fence main body 32 of the existing public fence 31. Abuts the peripheral surface. For this reason, the stability of the cover main body 41b with respect to the existing public fence 31, ie, the invert part 38, can be ensured.
[0060]
【The invention's effect】
According to the repair cover for an existing public fence according to claim 1, the cover body covers the invert part of the existing public fence by disposing the cover body in the existing public fence, and the inlet communication portion and the outlet communication Since the section communicates with the entrance and exit of the existing public fence, and the existing public fence can be repaired, the repair work of the existing public fence can be facilitated.
[0061]
According to the repair cover for an existing public fence according to claim 2, in addition to the effect of the repair cover for an existing public fence according to claim 1, a cleaning pipe is provided at the cleaning pipe receptacle of the cover body disposed in the existing public fence. Since the cleaning tube receptacle extends upward when fitted, the inside of the cover body can be inspected and cleaned even when dirt or the like is accumulated outside the cover body. Since the upper part of the cleaning tube can be closed with the inner lid fitted to the inner wall, it is possible to prevent intrusion of earth and sand into the cleaning tube.
[0062]
According to the repair cover for an existing public fence according to claim 3, in addition to the effect of the repair cover for an existing public fence according to claim 1 or 2, in the state where the expansion / contraction frame of the cover body is degenerated, By disposing the cover body in the existing public fence, the cover body can be easily disposed, and with the cover body disposed in the existing public fence, the telescopic casing is appropriately extended. In addition, since the inlet and outlet of the existing public fence are connected, the connection work of these inlet and outlet can be facilitated, and the cover body can be attached even to the existing public fence with different inner diameter dimensions. Repair work for existing public fences can be made even easier.
[0063]
According to the repair cover for an existing public fence according to claim 4, in addition to the effect of the repair cover for an existing public fence according to claim 1 or 2, the cover body has an outer diameter dimension substantially equal to the inner diameter dimension of the existing public fence. Therefore, by disposing the cover body in the existing public fence, it is possible to close substantially the entire area of the existing public fence, so that the work for adjusting the mounting position of the cover body is facilitated. As a result, the cover body This makes it easy to repair existing public fences.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an installed state of a first embodiment of an existing public fence repair cover according to the present invention.
FIG. 2 is a sectional view showing an installed state of the existing public fence repair cover.
FIG. 3 is a perspective view showing a repair cover for an existing public fence as above.
FIG. 4 is a cross-sectional view showing another installation state of the existing public fence repair cover.
FIG. 5 is a cross-sectional view showing an installed state of the existing public fence repair cover.
FIG. 6 is a cross-sectional view showing an installation state of the second embodiment of the present invention.
FIG. 7 is a cross-sectional view showing an installed state of the existing public fence repair cover.
FIG. 8 is a perspective view showing an existing public fence repair cover according to the same.
FIG. 9 is a cross-sectional view showing a conventional public fence.
[Explanation of symbols]
11a, 11b Repair cover for existing public fences
31 Existing public fence
33 Inlet
34 Outlet
38 Invert club
41a, 41b Cover body
42a, 42b Inlet communication part
43a, 43b Outlet communication part
44a, 44b Vacuum tube receptacle
51 telescopic housing
61 Vacuum tube
64 Inner lid

Claims (4)

It is a repair cover for an existing public fence that is buried in an existing public fence buried in the ground and provided with an upstream inlet, a downstream outlet, and an invert portion, and repairs the existing public fence.
A substantially semi-cylindrical cover body which is disposed in the existing public fence and covers the invert part from above by bringing both side edge edges into contact with both sides of the invert part of the existing public fence;
A cleaning tube receptacle provided above the cover body and opened upward;
Provided on the side of the cover main body, with the cover main body disposed in the existing public pit, an inlet communication portion communicating with the inlet of the existing public pit,
An outlet communication portion provided on a side of the cover main body and in communication with the outlet of the existing public fence in a state where the cover main body is disposed in the existing public fence. Repair cover for existing public fences. A cleaning tube that is disposed in an existing public fence and fitted into the cleaning tube receptacle of the cover body, and extends the cleaning tube receptacle upward,
The repair cover for an existing public fence according to claim 1, further comprising an inner lid that is fitted to an upper portion of the cleaning tube and closes the cleaning tube. At least one of the inflow port communication portion and the outflow port communication portion is attached with an expansion / contraction housing that can extend and retract the inflow port communication portion or the outflow port communication portion toward the side of the cover body. The repair cover for existing public fences according to claim 1 or 2, characterized by the above. The cover body for repairing an existing public fence according to claim 1 or 2, wherein the cover body has an outer diameter dimension substantially equal to an inner diameter dimension of the existing public fence.

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