JPH0426530Y2 - - Google Patents

Description

[Detailed explanation of the invention] (Field of industrial application) This invention is filled with a paving material with good load-bearing capacity that can be used on general roads paved with decorative towels and colored concrete. The present invention relates to decorative lids for manholes, etc.

(Conventional technology) Covers of manholes and other devices used as inspection holes for sealed drainage ditches installed in building passageways, arcades, underground shopping malls, etc., and for electrical cables buried underground, etc. For example, tiles made of ceramics, so-called vinyl tiles made of plastic such as vinyl chloride, colored resin concrete, decorative concrete, etc. are used, and the same material is used on the surface of the lid to match the paving. It has become possible to attach or fill the lid so that it cannot be seen at first glance.

In addition, since it is rare for heavy vehicles to pass over the covers of manholes etc. that are generally installed in this way, the lids are shaped like rectangular boxes with an open top and are made of cast iron or made of metal plates. It has been used by assembling it into a box shape, filling the opening with concrete, etc., and pasting tiles on it.

Lid bodies used for such purposes are generally called decorative manhole covers, color paving manhole covers, etc., and are filled with paving material on site and then used as completed lids. used.

(Problem that the invention aims to solve) Recently, not only the passages of buildings and arcades, but also ordinary roads are often paved with decorative tiles or colored concrete. There has been an increasing demand for decorative lids for manholes and the like that have load-bearing strength.

The present invention has been devised to meet such demands.

(Means for solving the problem) The lid body to be filled with paving material is made by arranging strip-shaped vertical strips, which have good load resistance and are conventionally used for ditch covers, etc., in parallel, and horizontally perpendicular to these strips. This problem can be solved by applying a so-called grating, which is assembled in a grid shape using strips or metal rods, and side plates are provided at both ends of the vertical strips.

That is, the height of the side plates that make up the periphery of the grating is made to protrude from the surface of the vertical strips to a height that is approximately equal to the sum of the thickness of the tiles used as the pavement surface material plus the thickness of the bottom plate, This can be solved by making the bottom plate equal in size to the inner area surrounded by the four side plates, and configuring it to be attached and fixed to the front or back surface of the grid formed by the vertical strips and horizontal strips, depending on the purpose. be.

For the vertical strips of the grating, it is okay to use materials that are generally used for gratings, such as flat plates, I-bars that are thinner in the middle than the top and bottom, and T-covers that are thick only at the top. It may be assembled in a lattice shape by using locking holes, locking grooves, etc., or by welding horizontal strips by electric pressure welding using metal rods or the like.

(Example) The present invention will be explained according to embodiments shown in the drawings.

As shown in Fig. 2, narrow vertical strips 1 made of stainless steel plates or the like are arranged vertically in parallel in the width direction, and horizontal strips 2 are inserted perpendicularly to the horizontal strips 1 through locking holes, locking grooves, or electric pressure welding. The grating assembled in a lattice shape using the method etc. has side plates 3 that make up the surrounding area,
The side plate 3 is designed to protrude beyond the surface formed by the vertical strips 1 and the horizontal strips 2 to a height approximately equal to the sum of the thickness of the pavement surface material and the thickness of the bottom plate 4 made of a metal plate.
The bottom plate 4 made of a metal plate as shown in FIG. 1 has a size equal to the inner area surrounded by the four side plates 3 of the grating.

Note that the bottom plate 4 is fixed by welding or the like to the front or back surface of the grating formed by the vertical strips 1 and the horizontal strips 2 of the grating at the time of shipment, depending on the material of the paving material.

(Effects of the invention) Since the present invention is constructed as described above, it can be manufactured without assembling the bottom plate, and the bottom plate can be fixed depending on the type of paving material at the time of shipment, so it can be provided at a lower cost. It is lighter and easier to handle than conventional cast iron products, and has a structure that incorporates a grating used as an ordinary gutter cover, so it is lighter than conventional cast iron products. It has a strong load-bearing strength and can withstand the passing of vehicles, etc.

Furthermore, when tiles or the like are used as a surface material for pavement, as shown in Fig. 3, a bottom plate 4 made of a metal plate is fixed to the surfaces of the vertical strips 1 and horizontal strips 2, and tiles, etc. 6 are pasted on top of the bottom plate 4. This has the effect of allowing the surface of tiles, etc. to be stuck without unevenness, and when filling concrete 8 for paving, etc., as shown in Figure 4, the bottom plate 4 is aligned with the vertical strip 1 and the horizontal strip 1. If you use something fixed to the back of the strip 2, the concrete 8 for paving will also be filled between the vertical strips 1 and 1, so there is no fear that it will fall off from the lid after hardening, and the thickness can be reduced. Because of this, there is no risk of damage such as cracking.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a perspective view of the bottom plate used for the top or bottom surface of FIG. 2, FIG. 2 is a perspective view excluding the metal plate, and FIG.
A cross-sectional view and usage state diagram of the finished product shown in the figure,
FIG. 4 is a sectional view showing another state of use. 1...Horizontal strip, 2...Horizontal strip, 3...Side plate, 4
... Bottom plate, 5 ... Locking hole, 6 ... Tile, etc., 7
...Socket frame, 8...Concrete, etc.

Claims (1)

[Scope of utility model registration request] Vertical strips 1, horizontal strips 2, and side plates 3 are assembled in a grid pattern, and the upper sides of the four surrounding side plates 3 protrude from the surface of the vertical strips 1, and the lower sides are the vertical strips 1.
A decorative cover body for a manhole etc., which is composed of a grating fixed by welding or the like so as to be flush with the back surface of the manhole, and a bottom plate 4 having a size equal to the inner area surrounded by four side plates 3.