JPS5934636Y2 - grating - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a grating used for road side ditches, cross ditches, etc.

As this kind of grating, for example, a receiving frame with a cross-section shape is placed at the edge of the opening of a concrete groove, the upper surface side of which is exposed to the outside and grounded, and a lattice-like grating is placed on the horizontal plate part of this receiving frame to cover the opening of the groove. A grating body is mounted on the grating body.

There are two types of gratings: those in which the grating itself is simply placed on a support frame, and those in which it is fixed so that it cannot be easily removed. For vehicles that are frequently passed by cars, etc., fixed types are mainly used from the standpoint of safety and noise.

By the way, with conventional fixed gratings, bolts are planted on the horizontal plate of the receiving frame, and bolt holes are provided in the grating body, and when forming the groove, only the receiving frame is buried in the predetermined position, and the concrete solidifies. After the grooves are completed, the grating body is placed on the receiving frame with the bolts of the receiving frame passing through the bolt holes, and nuts are screwed onto the through ends of the bolts to fix the grating body.

This is because if the grating body is attached to the reserved receiving frame before concrete pouring, the grating body will get in the way of the formwork of the groove forming phase.

However, in the current situation where such construction methods have to be used, it is difficult to accurately position and secure the receiving frames, so it is easy to cause pitch deviations and misalignments between the bolts of both opposing receiving frames. Therefore, it is easy to cause the inconvenience that these bolts and the bolt holes of the grating body do not match well.

In addition, since tightening the nuts is a relatively time-consuming process, there is also the disadvantage that the grating itself cannot be installed or removed quickly, and if the bolts are damaged for some reason, the entire receiving frame must be replaced. It is uneconomical to have to do so.

The present invention was developed in view of these circumstances, and the above-mentioned disadvantages can be solved by fixing the grating body to the receiving frame by holding the horizontal plate portion of the receiving frame and the base plate of the grating body with clips. It is an object of the present invention to provide a grating which can solve the problem and which can reliably and easily connect and fix the grating main body and the receiving frame using clips.

Hereinafter, the present invention will be explained based on embodiments shown in the drawings.

In the figure, reference numeral 1 indicates a groove such as a road, and this groove 1 is formed of concrete into a desired shape.

2 is the receiving frame.

The receiving frame 2 has a cross section with a vertical plate part 2b erected on one side edge of the horizontal plate part 2a, and a plurality of anchor poles 2C are provided on one side of the vertical plate part 2b. ... is provided protrudingly from the other side of the vertical plate portion 2b and the horizontal plate portion 2a.
It is grounded at the opening edge of the groove 1 with its upper surface exposed to the outside.

Insert tools 4 are provided at required locations in the longitudinal direction of the portion where the lower surface of the horizontal plate portion 2a of the receiving frame 2 is in close contact with the concrete.

This insertion tool 4 has a flat housing shape that is open on the inside side of the groove and closed on the side, lower and back sides, and has a hollow part 3 inside, and is welded, screwed, etc. to the lower surface of the horizontal plate part 2a. It is firmly fixed.

5 is a grating body that covers the opening of the groove 1.

The grating main body 5 is a normal grating having a suitable grid shape, and has a base plate 5a superimposed on the horizontal plate portion 2a of the receiving frame 2 at the lower peripheral edge thereof.

Further, a side plate 5b is provided at the end portion in the width direction of the grating body 5, and a predetermined gap is formed between the side plate 5b and the base plate 5a.

Reference numeral 6 denotes a clip for fixing the grating main body 5 onto the receiving frame 2.

The clip 6 has a U-shape in side view having a substantially parallel upper piece 6a and a lower piece 6b, and has a downwardly bent portion 6C projecting downward on the lower surface of the tip edge of the upper piece 6a. It is integrally molded from spring steel or the like.

With the lower piece 6b inserted into the cavity 3, the clip 6 elastically clamps the base plate 5a of the grating body 5 and the horizontal plate 2a of the receiving frame 2, which overlap each other, from above and below. In this state, the bent portion 6
C is inserted into the gap between the side plate 5a and engages with the edge of the base plate 5a on the side opposite to the groove, thereby preventing the clip 6 from being pulled out.

As explained above, in the grating of the present invention, the receiving frame 2
, 2, even if there is a slight deviation in the grounding position of the support frame 2, the horizontal plate portion 2a of the receiving frame 2 and the base plate 5a that overlaps with this need only be held between the clips 6. No inconvenience will occur.

In addition, the clip 6 can be attached by simply driving it into the predetermined location of the overlapping horizontal plate portion 2a and the base plate h5a from the groove 1 side with a hammer, etc., so it is less time-consuming than connecting with bolts and nuts. There is an advantage that the main body 5 can be quickly attached to and removed from the receiving frame 2.

Since the upper piece of the clip 6 is provided with a bent portion 6C, the bent portion 6C is formed into the side play) 5b.
and the base play) 5a, and insert the bent part 6 into the gap between the
C can be engaged with the base plate 1-5H to prevent the clip from being pulled out.

Furthermore, even if the clip 6 is damaged for some reason, it is only necessary to replace the clip 6 with a new one, which is much easier to deal with than the case where the bolt installed in the receiving frame is damaged. .

Furthermore, when using the insertion tool 4 as described above, most of the load from automobiles, etc. is received by the concrete from the horizontal plate part of the receiving frame, and almost no load is received by the insertion tool 4, so that the hollow part 3 is The insertion tool 4 will not deform and may be damaged.
Since it is formed in the shape of a housing, even if a minute load is applied to the insertion tool 4 from above, it has a shape that can sufficiently stop the load, and it will not be deformed or damaged at all.

Furthermore, the use of the inserter 4 can effectively prevent the surrounding concrete from collapsing, which is advantageous for long-term use.

Furthermore, since most of the horizontal plate part of the receiving frame is supported directly on concrete, and only a plurality of housing-shaped inserts 4 need to be formed, it is possible to connect the grating body to the receiving frame using a complex large structure. Compared to the case where the receiving frame itself is used, materials can be reduced and the weight of the receiving frame itself can be reduced, handling during storage and transportation can be simplified, and work efficiency during installation or replacement work can also be improved.

Note that the clips are not limited to those mentioned above, for example, those shown in Fig. 4~
The structure shown in FIG. 6 may also be used.

That is, the one shown in FIG. 4 has bent portions 6 on the lower surface of the tip edge of the upper piece 6a and on the upper surface of the tip edge of the lower piece 6b.
C is provided, and the bent portion 6C of the lower piece portion 6b is attached to a locking step provided on the lower surface of the horizontal plate portion 2a of the receiving frame 2 (for example, the opening edge of a hole drilled in the horizontal plate portion 2a). It is designed to be engaged.

Moreover, the one shown in FIG. 5 is made of wire rod, and the upper piece 6a
A new curved section 6C is formed at the tip of the curved section 6C to protrude downward, and has the same function as that shown in FIGS. 1 to 3 above.

The one shown in FIG. 6 is made of wire, and has a bent portion 6C that projects upward not only at the top end of the upper piece 6a but also at the tip of the lower piece 6b, and is different from the one shown in FIG. Has similar functionality.

Further, the opening shape of the insertion tool 4 for forming the cavity is not limited to a rectangular cross section, for example, and may be as shown in FIGS. 7 to 9.

That is, Fig. 7 shows a case with a square cross section, Fig. 8 shows a case with a circular cross section, and Fig. 9 shows a case with a triangular cross section. Suitable for clips made of wire material.

Further, the cross-sectional shape of the base plate 5a may be any shape, such as a square, that allows the bent portion 6C to engage with it, and the base plate 5a may be widened to below the side plate 5b.

[Brief explanation of the drawing]

1 to 3 show an embodiment of the present invention, in which FIG. 1 is a front sectional view, FIG. 2 is an enlarged front sectional view showing essential parts, and FIG. 3 is a perspective view. FIGS. 4 to 9 show other embodiments, and FIGS. 4, 5,
FIG. 6 is a perspective view of the clip, and FIGS. 7, 8, and 9 are sectional views of the insertion tool. 1... groove, 2... receiving frame, 2a...
...Horizontal plate part, 3...Cavity part, 4...
・Insert tool, 5...Grating body, 5a...
... Base plate, 5b ... Side plate, 6 ... Clip, 6a ... Upper piece of clip, 6b ... Lower piece of clip ,6
C...Downward bending part.

Claims (1)

[Scope of utility model registration request] A receiving frame with a cross-sectional shape is installed at the opening edge of the concrete groove.
The upper surface of the horizontal plate portion is exposed to the outside and is grounded, and a grating body that covers the opening of the groove is placed on the horizontal plate portion of the receiving frame, the lower surface of the horizontal plate portion of the receiving frame. A plurality of case-shaped inserts, which are open on the inner side of the groove, closed on the side, lower and back sides, and have a hollow portion inside, are placed at the required longitudinal locations of the parts in close contact with the concrete at intervals. Further, a side plate is provided at the widthwise end of the grating body, and a base plate that overlaps the horizontal plate portion of the receiving frame is provided with a predetermined gap between it and the side plate, and By inserting the downward bent portion formed at the tip of the upper piece of the clip and engaging it with the booth plate, and inserting the lower piece of the clip into the cavity of the insertion tool, the horizontal plate of the receiving frame is inserted. A grating that is formed by elastically sandwiching the base plate of the grating body and the base plate of the grating body.