JPH08311909A - Cover for manhole - Google Patents

Abstract

PURPOSE: To prevent the design or appearance of a cover for a manhole from being spoiled even if it is installed in the grass such as lawn, etc., by forming the cover of the cover bottom having a water hole therein, a middle layer formed of sponge, etc., provided on the cover bottom and a vegetation layer such as soil, etc., capable of planting lawn, etc., laminated on the middle layer. CONSTITUTION: The cover bottom 6 having a water hole 5 is provided to the lower end of a frame body 2, a middle layer 7 is placed on the cover bottom 6, and a vegetation layer 8 constituted of soil, etc., is laminated on the middle layer 7. The middle payer 7 sends surplus water in the vegetation layer 8 downward while preventing the falling down of the vegetation layer 8 to the inside of a drainage basin 3 and, at the same time, a bad smell from the inside of the drainage basin 3 can be caught. By the constitution, even if a manhole is installed in grass, a cover of the manhole is harmonized with the surroundings thereof to make it as inconspicuous as possible when the same grass planted around the manhole is planted to the vegetation layer, and the damage in a design or a beautiful sight of the cover can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manhole cover, and more particularly to a manhole cover installed in a plant such as grass.

[0002]

2. Description of the Related Art Wastewater discharged from a building is led to a public sewer through an outdoor drainage pipe, but usually at the confluence or bend of the outdoor drainage pipe, the direction of drainage is changed for cleaning or inspection. There is a drainage basin for this. And
From the standpoint of equipment planning, how to lay out those drainage basins should be decided from the standpoint of achieving a sufficient drainage function or easy maintenance. is there.

[0003]

[Problems to be Solved by the Invention] On the other hand, turf may be planted on the premises as part of the exterior or landscaping. If a drainage basin is installed in such a plant, There was a problem that the lid of the drainage basin was exposed from the gap, which adversely affected the design and aesthetics of the exterior and landscape.

In addition, when the exterior or the landscape is an important design element, the facility plan must be changed,
There was a problem that the original functions and workability during maintenance and inspection were impaired.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a manhole cover that does not impair the design and aesthetic appearance even when placed in a plant such as a lawn.

[0006]

In order to achieve the above object, the manhole cover of the present invention has a predetermined opening in a manhole cover which is detachably attached to a ground opening of the manhole as described in claim 1. From a lid bottom having water holes, an intermediate layer formed on the lid bottom with a sponge and the like, and a vegetation layer such as soil laminated on the intermediate layer and capable of implanting grass and the like. It is composed.

The lid of the manhole according to the present invention is such that a hoisting portion penetrating the intermediate layer and the vegetation layer of claim 1 is erected on the lid bottom.

[0008]

In the manhole cover of the present invention, the same kind of plant as that planted around the manhole, for example, grass is planted in the above-mentioned vegetation layer. Then, the cover of the manhole is covered with grass and integrated with the surroundings, and becomes inconspicuous.

The vegetation layer does not enter or fall into the manhole because it is blocked by the intermediate layer, but excess water in the vegetation layer passes through the intermediate layer and is appropriately passed through the water holes at the bottom of the lid. Drain inside. On the other hand, the odor from the manhole is captured in the middle layer and does not flow to the ground.

Further, when the hoisting portion penetrating the intermediate layer and the vegetation layer is erected on the lid bottom, the hoisting portion can be easily found even if the grass grows.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a manhole cover according to the present invention will be described below with reference to the accompanying drawings. In addition to manholes, manholes include manholes installed in public sewers and manholes such as underground machine rooms and underground tanks.

FIG. 1 is a plan view and a sectional view showing a lid of a drainage basin according to this embodiment. As can be seen from these figures, the lid 1 of the drainage basin of this embodiment is provided with an annular frame body 2, and the peripheral edge of the frame body 2 is placed on the opening shoulder portion 4 of the drainage basin 3.

At the lower end of the frame body 2, there is provided a lid bottom 6 having a water passage hole 5, an intermediate layer 7 is provided on the lid bottom 6, and an earth layer is placed on the intermediate layer 7. The vegetation layer 8 composed of is laminated.

The lid bottom 6 is preferably made of cast iron, for example, and is preferably formed integrally with the frame body 2. The water passage holes 5 are holes for smoothly draining excess water in the vegetation layer 8, and are preferably formed in a lattice shape or a mesh shape, for example.

The middle layer 7 sends excess water in the vegetation layer 8 downward while preventing the vegetation layer 8 from falling into the drainage basin 3 and captures the odor from the drainage basin 3. And is preferably formed of, for example, a sponge.

A predetermined lifting portion 9 is provided on the lid bottom 6 for the intermediate layer 7.
Further, the vegetation layer 8 is erected so as to penetrate therethrough, and at the time of maintenance and inspection, a hook can be hooked on the lifting portion 9 to lift it and the lid 1 can be removed.

In the lid 1 of the drainage basin 3 of this embodiment,
The turf 10 vegetated around the drainage basin 3 is also planted in the vegetation layer 8 described above. Then, the lid 1 is covered with the grass 10 and integrated with the surroundings.

The excess water in the vegetation layer 8 is shown in FIG. 2 (a).
As shown in Fig. 3, the water is drained from the water hole 5 of the lid bottom 6 through the middle layer 7 and the odor from the drainage basin 3 is shown in Fig.
As shown in (b), it is captured in the mid layer 7.

At the time of inspection and maintenance, a predetermined hook is hooked on the lifting portion 9 and lifted to remove the lid 1.

As described above, according to the lid 1 of the drainage basin 3 of this embodiment, if the same grass 10 as the surrounding is planted in the vegetation layer 8 provided on the surface of the lid, the lid of the drainage basin 3 is provided. 1
Becomes inconspicuous with the surroundings. Therefore, even if the drainage mast 3 is installed inside the lawn plant,
There is no longer a possibility that the lid will be exposed from between the lawns as in the conventional case and spoil the design of the exterior or the landscape.

Therefore, in the drainage facility plan, the layout of the drainage pipes and drainage basins can be examined from the viewpoint of the original function and maintenance inspection without being restricted by the plan of the exterior or the landscaping, In landscaping and exterior planning, free design is possible without considering equipment planning.

Also, an intermediate layer 7 is provided between the vegetation layer 8 and the lid bottom 6.
Since the vegetation layer 8 is provided, the vegetation layer 8 is prevented from falling.
Excessive water inside can be drained, and since the odor from the inside of the drainage basin 3 is captured by the intermediate layer 7, it is possible to prevent an offensive odor from flowing to the ground.

Further, since the hoisting portion 9 is erected from the lid bottom 6 so as to penetrate the intermediate layer 7 and the vegetation layer 8, the hoisting portion 9 can be easily found even if the grass 10 grows. .

Although the vegetation layer is made of soil in the above-mentioned embodiments, any material other than soil may be used as long as it is a material which supports plants and has a predetermined water retention property, and the intermediate layer. Any material may be used as long as it is a material having water permeability to some extent while preventing the vegetation layer from falling.

Further, in the above-mentioned embodiment, the hoisting portion is erected from the bottom of the lid, but it may be omitted in some cases.

[0026]

As described above, according to the manhole cover of the present invention, the manhole cover is detachably attached to the above-ground opening of the manhole. Since it is composed of an intermediate layer formed on the above and formed of a sponge, and a vegetation layer of soil or the like which is laminated on the intermediate layer and on which turf or the like can be planted, it is possible to arrange the manhole in the planting. However, if the same planting planted around the manhole is planted in the vegetation layer, the lid of the manhole becomes integral with the surroundings and becomes unobtrusive, and the design and aesthetics are not impaired.

[0027]

[Brief description of drawings]

FIG. 1A is a plan view of a manhole cover according to the present embodiment, and FIG. 1B is a vertical sectional view taken along line AA of FIG.

FIG. 2 is a diagram for explaining the operation of a manhole according to this embodiment.

[Explanation of symbols]

 1 Manhole cover 3 Manhole 5 Water passage hole 6 Bottom of lid 7 Middle layer 8 Vegetation layer 9 Lifting part 10 Turf

Claims (2)

[Claims] 1. A manhole lid detachably attached to a ground opening of a manhole, wherein a lid bottom having a predetermined water passage hole and an intermediate layer formed on the lid bottom with a sponge or the like. And a vegetation layer of soil or the like which is laminated on the intermediate layer and on which turf or the like can be planted, and a lid for the manhole. 2. The manhole cover according to claim 1, wherein a lifting portion penetrating the intermediate layer and the vegetation layer is provided upright on the lid bottom.