JPH09296503A - Grating - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and surely install a grating by providing a gap-stopper to be engaged with an inner side of a gutter along a contact surface, or by fixing a pipe or an elastic material to the contact part. SOLUTION: A grating 1 is formed into a square, and two steel pipes 2 are welded in parallel to two sides of a lower side 1a so as to correspond to a receiving part 21 of a gutter 20. The section of the pipes 2 is approximately fan-shaped, and the pipes are directed downwardly in the outer direction. A gap-stopper 4 is welded to an inner side X of the pipes 2 so as to be suspended, and provided at the position so as to be engaged with an inner side 22 of the gutter 20. Fine adjustment in positioning is unnecessary, and the grating can be easily installed, and close attachability of the contact surface can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grating used as a gutter cover for a road or the like, a manhole cover, a part of a drainable floor surface of a kitchen or the like.

[0002]

2. Description of the Related Art Generally, when installing a grating,
The receiving part such as the opposite side groove has a flat shape and is installed to be stable there. However, the receiving part on the side groove side and the contact surface part on the grating side include some deviation, so rattling remains. And such rattling is a problem of noise,
Alternatively, there are problems such as damage to the contact surface portion. On the other hand, a method using rubber packing is known, but it contributes to the reduction of rattling and noise, but it is often not enough to eliminate it.

On the other hand, there is a gutter which does not emit noise disclosed in Japanese Patent Laid-Open No. 6-248688, and it is characterized in that the contact surface of the gutter lid and the contact surface of the gutter are in close contact with each other by a curved surface.

[0004]

[Problems to be Solved by the Invention] Since it is just a curved surface,
When installed in the gutter, it is easy to shift in the width direction of the gutter,
Therefore, it is installed after fine adjustment for positioning.
Even after installation, if an uneven load such as a vehicle passing through the end of the grating is applied, it will still be misaligned, and the misaligned side will not be flush with the road surface because the top surface of the grating will lift slightly It becomes.
In addition, if you want to realize the characteristics such as "the curved surface is the contact surface" in the grating, you need an arrangement suitable for the grating, for example, if it is a concrete lid by casting, the shape of the same shape by molding the mold. It is possible to form a curved surface, but in a grating made by welding individual iron materials, this kind of thing can not be done,
Therefore, there is a demand for a method by which a curved surface can be easily formed, and the curved surface can be obtained with accuracy to realize the adhesion. In addition, it may be difficult for curved surfaces to adhere to each other depending on the finish condition and quality variations. Alternatively, even if the contact surface portion on the grating side is accurately formed, if the receiving portion of the other party is misaligned, the close contact is still difficult. Therefore, the goodness of the contact surface portion due to the curved surface disclosed above cannot be utilized.

Therefore, according to the present invention, it is possible to easily and accurately make a grating having a curved contact surface portion, which can be easily and surely installed on site, and there is no rattling due to a reliable contact, and a contact surface on a curved surface can be formed. Despite this, it is to provide grating that does not shift.

[0006]

In the present invention, on the lower surface side of the grating, a shift stopper that engages with the inner side surface of the side groove or the like is provided along the contact surface portion. This may be one in which a part of the contact surface portion is extended downward, or may be provided separately from the contact surface portion. Anything will do as long as it does not slip.

For the contact surface portion, a pipe material having an outer shape whose cross section corresponds to a curved surface is used.
It was formed by fixing to the side of the grating as in 2. By doing so, since the pipe material is generally formed by extrusion molding, it is possible to obtain an accurate curved surface of the same shape.

Alternatively, the contact surface portion may be formed by fixing a rubber-like elastic material. For example, one surface of the rubber plate may be formed into a curved surface corresponding to the receiving portion as shown in FIGS. Alternatively, a rubber flat plate fixed to a curved base material may be used, and the base material may be an iron plate attached to the lower surface of the grating by various methods, or the above pipe material. In any case, in this way, even if there is some deviation in the contact surface portion or the receiving portion that is scheduled to be in close contact, the deformation characteristic compensates for the deviation. In addition, since the receiving portion such as the side groove has a shape that is recessed in the depth direction of the side groove, it is easy to bite into this recess, and thus it is easier to adhere. Of course, it can also work as a packing material. The rubber-like elastic material is generally rubber itself, but any other material may be used as long as the elastic characteristics and deformation characteristics with respect to load are similar to those of rubber.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to examples. 1 and 2 are embodiments of the grating 1 described in claims 1 and 2. The grating 1 has a quadrangular shape, and two pipe members 2 are welded in parallel with each other on two sides of the lower surface 1a so as to correspond to the receiving portions 21 of the side grooves 20. The pipe material 2 is a pipe material made of iron material having a substantially fan-shaped cross section, and the contact surface portion 3 is made to face downward and correspond to the receiving portion 21 as shown in the drawing. In addition, the inner sides X of the two pipe members 2 are welded so that they are prevented from being displaced by the iron plate 4, and are provided at positions where they are engaged with the inner side surface 22 of the side groove 20.

FIG. 3 shows an embodiment of the grating 1 described in claims 1 and 3. The contact surface portion 3 is provided at the same position as in the above-mentioned embodiment, but this contact surface portion 3 is formed by welding the L-shaped steel 5 to the lower surface 1a of the grating and fixing the rubber plate to the inner corner side of the L-shaped steel 5. 6 is formed on one surface. More specifically, a girder member 7 as shown in FIG.
Are welded at intervals in the longitudinal direction, a pedestal plate 8 of the same length as the L-shaped steel 5 is laid and welded here, and the rubber plate 6 is polymerized and screwed onto it, and finally the bottom surface of the grating. 1
It is welded to a. At this time, the rubber plate 6 has an arcuate cross-sectional shape on one side and serves as a contact surface with the receiving portion 21.
Further, one end side of the L-shaped steel 5 is extended downward as shown in the figure, and this is used as a slip stopper 4.

FIG. 5 is similar to the embodiment of FIG. 3, but the difference is that an iron plate 9a having an arcuate cross section is welded instead of the rubber plate. Therefore, the welded portion of the steel plate of the girder material 7 is also made to correspond to an arc shape. FIG. 6 is also similar to the embodiment of FIG. 3 except that the cast iron 9b having the same shape as the rubber plate is welded instead of the rubber plate.

[0012]

As described above, according to the invention as set forth in claim 1, in the grating in which the contact surface portion has a curved surface corresponding to the receiving portion such as the side groove or the like, the deviation preventing engagement for engaging with the inner side surface of the side groove is provided. I am trying. Therefore, it can be easily installed without fine adjustment such as positioning when installing, and after installation, when a large load such as a vehicle tire is applied to one side, it may be displaced along the curved surface of the contact surface, Alternatively, such a shift does not push up the side without load.

According to the second aspect of the invention, in the grating in which the contact surface portion has a curved surface corresponding to a receiving portion such as a side groove, the pipe surface having a cross section corresponding to the curved surface is fixed to the contact surface portion. It is characterized by doing. Therefore, an accurate curved surface formed by extrusion molding of the pipe material can be used as the curved surface of the contact surface portion, and the adhesion of the contact surface is improved. Further, it suffices to simply attach the pipe material, and it becomes easy to manufacture the grating having the curved contact surface portion.

According to the third aspect of the invention, in the grating in which the contact surface portion has a curved surface corresponding to a receiving portion such as a side groove, the contact surface portion is formed by fixing a rubber-like elastic material. There is. Therefore, the adhesion of the contact surface is improved, and it is easy to bite into the recessed shape of the side groove receiving portion, so that jumping up when the vehicle is passing is eliminated. Further, even if the contact surface shape on the grating side or the shape of the side groove receiving portion is somewhat defective, it can be compensated by the elastic deformation of the rubber plate.

[Brief description of drawings]

FIG. 1 is a front view of a grating using a pipe material and provided with a shift stopper.

2 (a) is a plan view and FIG. 1 (b) is a view of the grating shown in FIG.
It is an AA sectional view.

FIG. 3 is a front view of a grating using a rubber plate and provided with a shift stopper.

4 is a perspective view of the contact surface portion in the grating of FIG.
(a) Explanatory view of the welding of the girder material and the pedestal plate to the inner corner portion of the L-shaped steel, and (b) Explanatory diagram of the contact surface part formed by superposing the rubber plate and screwing on it. Is.

FIG. 5 is a front view of the grating provided with a contact surface portion made of an iron plate having an arc-shaped cross section.

FIG. 6 is a front view of a grating provided with a contact surface portion made of cast iron having an arcuate cross section.

[Explanation of symbols]

 1 Grating 2 Pipe material 3 Contact surface part 4 Misalignment prevention 5 L-shaped steel 6 Rubber plate as rubber-like elastic material 7 Girder material 20 Side groove 21 Receiving part 22 Inner surface

Claims (3)

[Claims] 1. A grating in which a contact surface portion has a curved surface corresponding to a receiving portion such as a side groove or the like, and a detent for engaging with an inner side surface of the side groove or the like is provided. 2. A grating in which a contact surface portion has a curved surface corresponding to a receiving portion such as a side groove, and the contact surface portion is formed by fixing a pipe material having a cross-section having an outer shape corresponding to the curved surface. . 3. A grating in which a contact surface portion has a curved surface corresponding to a receiving portion such as a side groove, and the contact surface portion is formed by fixing a rubber-like elastic material.