JP2545435Y2 - Base ring of protective hat - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pedestal ring of a protective hat provided to cover a lid fitted on a riser of a drainage pipe buried underground.

[0002]

2. Description of the Related Art As a method of constructing a drainage basin installed in the middle of a drainage pipe, a lid of the drainage basin is provided at a position lower than the road surface, and a lid fitted on a rising pipe of the drainage basin is covered with a protective hat. There is a method of exposing the cover of this protective hat to the road surface (see Japanese Utility Model Laid-Open No. 1-180585). In the case of this construction method, the protective hat is floated from the lid of the drainage basin, so even if a vehicle passes over the lid of the protective hat, the load of the vehicle will not be directly applied to the drainage basin. It is possible to prevent the drainage basin from being damaged by the load.

[0003] The protective hat is usually installed on a pedestal ring to determine its position. Further, the pedestal ring is usually formed of a heavy material such as concrete, and the bottom portion is buried underground. The bottom of the pedestal ring is formed flat.

[0004]

[Problems to be Solved by the Invention] However, in the case of such a conventional pedestal ring of the protective hat, although there is no problem in preventing damage to the drainage basin after the construction, when the protective hat is constructed, There was a problem to state.

[0005] That is, at the time of construction, a pedestal ring is placed on the ground, a protective hat is placed on the pedestal ring, and then the rolling work of the ground around the pedestal ring (road surface pavement work using a bulldozer or the like) is performed. At this time, the lid of the protective hat must be located directly above the lid of the drainage basin so that the protective hat is not in the way when opening and closing the lid of the drainage basin. However, the conventional pedestal ring is not fixed to the ground only if it is placed on the ground because its bottom surface is formed flat. Therefore, when the ground around the pedestal ring is rolled, a lateral load may be applied to the pedestal ring from a vehicle such as a bulldozer and the position of the pedestal ring may be shifted laterally. In that case, the position of the pedestal ring is adjusted again, and then the rolling is performed. However, the work efficiency is poor, and the construction cost is increased.

An object of the present invention is to provide a pedestal ring capable of improving workability when constructing a protective hat, focusing on the above problems.

[0007]

In order to achieve the above object, a pedestal ring of a protective hat according to the present invention is provided so as to cover a lid fitted on a rising pipe of a drainage pipe buried underground. In a pedestal ring of a protective hat to be used, a protrusion for preventing slippage is provided on a bottom portion buried underground.

[0008]

[Function] When constructing a protective hat, first, a pedestal ring is positioned and arranged above a lid to be fitted to a riser of a drainage pipe buried underground. Press the pedestal ring from the top so that the center is almost directly above the center of the drain basin lid). Then, a protective hat is installed on the pedestal ring, and the ground is pressed by a vehicle such as a bulltoza.

When the pedestal ring is pressed from above, the protrusion bites into the ground and is fixed, so that even when a load is applied in the lateral direction by a rolling vehicle or the like when the ground is rolled, the protective hat does not shift sideways.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to FIGS. FIG. 1 is a perspective view showing a construction state of a pedestal ring of a protective hat according to an embodiment. FIG. 2 is a longitudinal sectional view of the pedestal ring. In FIG. 1, 1 is a drainage basin, 2 is a protective hat, and 3 is a pedestal ring.

The drainage basin 1 is composed of a basin body 11, a riser pipe 12, and a lid 13. Masu body 11
Are the inflow port 11a and the outflow port 11b to which the drain pipe P is connected, and the branch port 1 to which the riser pipe 12 is connected.
1 c, and the lid 13 is provided at the upper end of the riser 12.

The protective hat 2 includes a tubular portion 21, a flange portion 22 integrally formed at a lower end of the tubular portion 21,
A lid 24 is provided at the upper end of the cylindrical portion 21 so as to be rotatable up and down via a hinge 23, and is embedded so as to cover the lid 13 of the drainage tub 1. Further, the protective hat 2 is disposed so as to float from the lid 13 of the drainage basin 1 so that a part thereof does not directly touch the drainage basin 1, and only the upper surface of the lid 23 is exposed to the road surface. I have.

The pedestal ring 3 has a fitting portion 31 in which a flange portion 22 of the protective hat 2 is fitted on an upper surface portion, and a projection 32 for preventing slippage is formed on a bottom surface portion. The riser 12 of the basin 1 is inserted and buried in the ground. The pedestal ring 3 is positioned so that the center thereof is almost directly above the center of the lid 13 of the drainage basin 1, and the inner peripheral portion of the pedestal ring 3 and the outer peripheral portion of the riser pipe 12 of the drainage basin 1. A certain interval is maintained between the two. The projection 32 has a trapezoidal cross section and is provided continuously over the entire circumference of the pedestal ring 3 and has a strength enough to withstand a load when the vehicle passes over the protective hat 2. ing. The material of the projection 32 may be the same as or different from the other parts of the pedestal ring 3. The material of the pedestal ring 3 may be concrete or a synthetic resin such as foamed polyethylene.

Next, the operation of this embodiment will be described. When constructing the protective hat 2, first, the base ring 3 is positioned and arranged above the lid 13 of the drainage basin 1 buried underground (the center of the base ring 3 is Then, the pedestal ring 3 is pressed from above. Then, the protective hat 2 is installed on the pedestal ring 3, and the ground is rolled by a vehicle such as a bulltoza.

When the pedestal ring 3 is pressed from above, the projection 3
The protective hat 2 does not shift laterally even when a load is applied in the lateral direction by a rolling compaction vehicle or the like during compaction of the ground, since the protective hat 2 is bitten into the ground. Therefore, workability at the time of construction of the protective hat 2 is improved.

Although the embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and there are changes in the design without departing from the gist of the present invention. Is also included in the present invention.

For example, in the embodiment, the protrusion 3 for preventing slippage is used.
2 shows the pedestal ring 3 provided continuously over the entire circumference, but a projection 32 for preventing slippage may be provided intermittently. In this case, the projection 32 may be formed integrally with the bottom of the pedestal ring 3 or may be fixed to the bottom of the pedestal ring 3 by screwing as shown in FIG. The cross-sectional shape of the projection 32 is not limited to the trapezoidal shape, and may be a mountain shape with a sharp tip.

In addition, the projection 32 for preventing slippage may have two or more rounds on the bottom surface of the pedestal ring 3. In this case, as described above, the projection 32 may be continuous or intermittent over the entire circumference, or may be spiral.

Further, in the embodiment, the construction state in which the cover fitted to the riser pipe of the drainage basin is covered with the protective hat has been described, but the construction state is shown above the valve provided in the middle of the drainage pipe. The present invention can also be applied to a case where a cover fitted to an installed riser is covered with a protective hat.

[0020]

[Effects of the Invention] As described above, in the base ring of the protective hat according to the present invention, since the protrusion for preventing slippage is provided on the bottom part buried under the ground, after being placed on the ground, By pressing from above, the protrusion can be cut into the ground and fixed. Therefore, when the ground is rolled thereafter, even if a load is applied in the lateral direction by a vehicle for rolling or the like, the protective hat does not shift laterally, so that the effect of improving workability is obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a construction state of a pedestal ring of a protective hat according to the present embodiment.

FIG. 2 is a vertical cross-sectional view illustrating a construction state of a pedestal ring of the protective hat according to the embodiment.

FIG. 3 is a sectional view of a main part showing a modified example of the pedestal ring.

[Explanation of symbols]

 Reference Signs List 1 drainage basin 12 riser 13 lid 2 protective hat 3 pedestal ring 32 projection

Claims (1)

(57) [Scope of request for utility model registration] 1. A base ring of a protective hat provided to cover a lid fitted on a riser of a drainage pipe buried in the ground, and a projection for preventing slippage on a bottom part buried in the ground. The base ring of the protective hat, wherein the base ring is provided.