JP4351606B2 - Grating - Google Patents

Description

  The present invention relates to a grating disposed in a side groove or the like.

  Grating is used for the side ditch (rainwater ditch) of the road in order to improve drainage, and metal grating is generally used from the viewpoint of strength. However, since such a grating is made of metal, it was slippery when the surface was wet with rain. In addition, since the grating is a single color of an inorganic metal, there is a problem that the design is poor. For these reasons, in recent years, gratings laid with fillers have emerged as antiskid measures and landscape improvement measures (see Patent Documents 1 to 4).

Japanese Utility Model Laid-Open No. 1-150848 (hereinafter referred to as “Reference 1”) JP 2000-154587 (hereinafter referred to as “Reference 2”) Japanese Utility Model Publication No. 6-53685 (hereinafter referred to as “Reference 3”) Japanese Patent Laid-Open No. 10-140643 (hereinafter referred to as “Reference 4”)

Reference 1 proposes a grating in which a V-groove-shaped concave groove portion opened upward by a Y-shaped plate portion is formed, and the concave groove is filled with a filler made of ceramic particles. In Reference 2, a main member made of a plurality of I-shaped steels arranged in an I-shaped cross section at a predetermined interval, and a bulge portion at the lower part of the I-shaped steel related to the adjacent main member are appropriately locked. A grating comprising a horizontal plate to be placed and a filler packed in a space surrounded by the main member and the side plate on the horizontal plate has been proposed.
Reference 3 proposes a grating in which a coiled material is fixed to the bottom surface of the V-shaped groove of the Y-shaped plate portion of Reference 1 to prevent the filler from peeling off. Reference 4 is a porous support on the bearing bar. A grating is proposed in which a permeable filler is laid on top of it.

  However, in Reference Example 1, since the concave groove portion has a V-groove shape, the filling material has a V-shape toward the upper surface of the grating and is easily detached. Moreover, although the upper edge part of the Y-shaped member appears on the upper surface of the grating, since the area ratio of the filler appears to be large in the area of the upper surface of the grating, the filler is easily peeled off when passing through the vehicle. Since the particulate filler is hardened with an adhesive or the like, when an external force is applied, the cracked lumps easily peel off. When the vehicle passes this grating, most of the vehicle load must be received by the filler, and the filler is easily damaged. In addition, since the Y-shaped plate portion is Y-shaped, general-purpose products such as so-called I-bars cannot be used and must be specially ordered. In Reference 2 as well, the area ratio of the filler is high in the grating top surface area, and when the traveling tire of a heavy vehicle passes the grating, it is supported and supported by the filler portion, and the filler is easily peeled off or dropped off. It was. In Reference 3, although the coil-shaped material and the filler can be more firmly integrated, the arrangement of the coil-shaped material has resulted in high costs. Moreover, the problem that the ratio of the area where the filler appears in the upper surface area of the grating is not solved, and the filler may be cracked or chipped off due to long-term use. In Reference 4, since the water-permeable filler is spread over substantially the entire upper surface of the grating, the filler is easily damaged and missing or cracked when passing through the vehicle. And if the filler on the surface of the grating is dropped and damaged, it looks bad, and the grating provided to improve the landscape has an adverse effect on the landscape. Furthermore, in References 1 to 3, the width of the slit for drainage must be reduced so that high heel bags and bicycle tires do not enter, and the Y-shaped members have a fine pitch, increasing the cost and weight of the product. Invited an increase. Reference 4 also tended to increase in weight because the filler was spread over the entire grating surface.

  This invention solves the said problem, and it aims at providing the grating which can prevent peeling and dropping-off of a filler, providing a slip prevention function and a beautiful scenery.

In order to achieve the above object, the invention according to claim 1 is a grid-like body (1) formed in a lattice shape by a plurality of main members and a connecting member, and a side plate joined to both end faces of the main member. (21), a plurality of concave members (4) placed on the main member so as to be spaced apart from each other, and a granular filler (5) filled in the concave portions of the concave members and bonded and integrated with each other And an upper plate (6) that is placed on the concave member with an opening through which the upper surface of the filler is exposed and with a lateral width smaller than between the side plates so that a part of the grid-like body is exposed. ) And the grating.
The invention according to claim 2 is a grid-like body (1) formed in a grid shape with a plurality of main members and a connecting member, side plates (21) joined to both end faces of the main member, and the main A plurality of concave members (4) placed on the member so as to be spaced apart from each other, a granular filler (5) filled in the concave portions of the concave members and bonded and integrated with each other, and an upper surface of the filler And an upper plate (6) placed on the concave member by providing a plurality of through holes in the plate surface so that a part of the lattice-like body is exposed. It is in the characteristic grating.
The grating according to claim 3 is the grating according to claim 1 or 2, characterized in that the opening end of the upper plate (6) forming the opening protrudes into the recess of the concave member (4).

As in the first and second aspects of the present invention, the granular filler (5) filled in the concave portions of the respective concave members, and the upper plate (the upper plate) on which the upper surfaces of the fillers are formed and exposed are formed. 6), when the vehicle passes over the grating, the upper plate portion can receive most of the vehicle weight, and as a result, the load on the filler is eliminated and the filler is peeled off and dropped off. Can be prevented. Nevertheless, since the filler appears on the upper surface of the grating through the opening, it possesses the anti-slip function by the filler and the beauty of the landscape.
As in the invention of claim 3, when the opening end of the upper plate (6) forming the opening protrudes onto the recess of the concave member (4), the filler is locked to the protruding portion. The structure is more difficult to peel from the recess.

  The grating of the present invention exhibits an excellent effect in maintaining and improving performance, such as prevention of peeling and falling off of the filler while providing an anti-slip function and a beautiful scenery.

Hereinafter, the gratin of the present invention will be described in detail. 1 to 5 show an embodiment of the grating of the present invention, FIG. 1 is a perspective view thereof, FIG. 2 is a plan view of the grating of FIG. 1, FIG. 3 is a cross-sectional view taken along the line I-I of FIG. 2 is an enlarged cross-sectional view taken along the line II-II in FIG. 2, and FIG. In order to make the figure easy to understand, a part of the hatching of the sectional display is omitted.
The grating G includes a lattice-like body 1, a rectangular frame portion 2, a concave member 4, a filler 5, and an upper plate 6.

  The lattice-like body 1 is formed by forming a plurality of metal main members 11 and a plurality of metal connecting members 12 in a lattice shape. The main member 11 is made of a metal strip having an I-shaped cross section (for example, an I-bar), and the main members 11, 11, etc. are vertically spaced apart from each other and arranged substantially in parallel at a constant pitch. The Here, the connecting member 12 is formed of a twisted bar formed by twisting a metal square bar, and the connecting members 12, 12,... Are spaced apart from each other and arranged substantially in parallel at a constant pitch. The connecting member 11 is disposed orthogonally to the main members 11, 11,. The lower edge of each main member 11 and the lower edge of each connecting member 12 are substantially flush.

  The rectangular frame portion 2 is a rectangular frame portion formed by strip-shaped side plates 21 and 21 and end plates 22 and 22 made of flat steel or the like. The width direction of the side plate 21 and the end plate 22 having a constant width is erected up and down, and is joined and integrated to each end face of the periphery of the grid-like body 1 to reinforce the grid-like body 1 from the periphery. The end plates 22, 22 are arranged substantially parallel to the main members 11, 11,. The side plates 21 and 21 are disposed substantially parallel to the connecting members 12 and are joined to both end surfaces of the main member. The lower edge of the main member 11, the lower edge of the connecting member 12, the lower edge of the side plate 21, and the lower edge of the end plate 22 (the lower edge of the rectangular frame 2) are substantially flush. The grid-like body 1 and the rectangular frame portion 2 are integrated to form a rectangular parallelepiped disk-like body 3 which is the base of the grating G. The width of the side plate 21 and the end plate 22 is set to be higher than the height of the concave member 4 to be described later. An accommodating portion 11a surrounded by the rectangular frame 2 is provided above the upper edge of each main member 11 by an amount corresponding to the sum H of the plate 6 and the thickness H. (Fig. 4).

The concave member 4 is a long member having a U-shaped cross section in the longitudinal direction (FIG. 4). The concave member 4 includes a U-shaped member. The groove members 4a, 4a... Which are the plurality of concave members 4 are spaced apart from each other and maintained at a predetermined pitch substantially parallel to the connecting members 12, 12,..., And the main members 11, 11. The grooved steel 4a is placed on the top. The grooved steel 4a is fixed on the main member 11 with the opening side facing up in a bowl-like shape when viewed from the side, and a groove serving as a recess 41 is provided. A granular filler 5 is filled in the groove 41 and hardened with a caking agent.
Although this embodiment uses the general-purpose channel steel 4a as the concave member 4, it can be set as the concave member 4 which carried out the press work and the roll forming process of the flat plate. For the width and depth of the groove 41 of the channel steel 4a, unlike the V-groove related to the Y-shaped plate part where one is regulated by the other value as in Reference 1, the optimum values are selected independently. There is freedom. The spacing pitch between adjacent channel steels 4a, 4a also has a degree of freedom in selection.

The filler 5 is a granular material having high hardness such as natural stone particles or ceramic particles, or a granular material having some elasticity obtained by solidifying rubber chips or the like. Natural stone particles are useful for landscape improvement as they are, but ceramic particles and rubber chips are appropriately colored to help improve the landscape. As described above, the filler 5 is filled in the groove 41 of each concave member 4, and is solidified with a caking agent such as an epoxy resin adhesive and is bonded and integrated with each other. At the same time, the filler 5 is joined and integrated with the channel steel 4a by the caking agent. When the phosphorescent pigment is added to the binder or the granular filler 5 containing the phosphorescent pigment is used, the phosphorescent pigment is more preferable because it enhances the labeling and decorative effects. Phosphorescent pigments are composed of phosphorescent zinc sulfide and the like, and are pigments that can absorb and accumulate light such as the sun during the day, and emit and emit light in the dark.
The filler 5 is filled up to almost the entire upper surface of the upper surface opening of the channel steel 4a disposed in a bowl shape when viewed from the side. The upper surface of the filler 5 packed in the channel steel forms a part of the upper surface of the grating (described later). Since the filler 5 is made of a granular material, fine irregularities are formed on the upper surface of the filler, exhibiting an anti-slip function, and the filler 5 with natural stone particles and coloring is useful for improving the landscape.

  The upper plate 6 is a metal plate-like body placed on the concave member 4 with a lateral width smaller than between both side plates 21 so that a part of the grid-like body 1 is exposed in plan view. As shown in FIG. 2, the lateral width Wu of the upper plate 6 is made smaller than the width Ws between the inner walls of the side plates 21, and a part of the grid-like body 1 is exposed inside the side plates 21 and 21. A part of the grid-like body 1 is exposed along two side plates 21 at two locations on both sides, and the upper plate 6 having a rectangular shape in plan view is the grooved steel 4a of the accommodating portion 11a so as to carry the rainwater discharge portion 8 thereon. , 4a... The length in the longitudinal direction of the upper plate 6 is made substantially equal to the length between the both end plates 22, and the upper plate 6 and the end plate 22 are fixed. In the upper plate 6, the side edge 63 forming the discharge portion 8 is bent from the flat main body so that both side edges of the upper plate 6 are placed on the channel steel 4 a. As shown in FIG. 4, the upper plate 6 is bent at portions indicated by arrows A in the vicinity of both ends in the lateral width direction to form side edges 63 along the flow direction of the side grooves 9. By placing and fixing the upper plate 6 on each channel steel 4a, the planar main body 60 of the upper plate 6 and the upper edge of the rectangular frame portion 2 are substantially flush with each other.

  The upper plate 6 is provided with an opening 61 through which the upper surface of the filler 5 filled in the groove 41 is exposed when placed on the concave member 4. In the direction of the side groove of the upper plate 6, elongated openings 61, 61,... Each opening 61 is arranged on the groove 41 of each channel steel 4a, and the upper surface of the filler 5 filled in the groove 41 is exposed through the opening 61. The upper surface of the upper plate 6 and the exposed upper surface of the filler 5 are substantially flush with each other and become the upper surface of the grating G (FIG. 5). The exposed upper surface of the filler 5 is visible to pedestrians and the like, and the beauty of the landscape is improved by appropriately selecting the color of the filler 5 and the shape of the opening 61. If a plate-like body having a concavo-convex pattern such as a striped steel plate is adopted as the upper plate 6, it becomes more preferable in combination with the anti-slip effect of the fine concavo-convex by the filler 5.

Further, in the grating G of the present embodiment, the upper plate 6 has an opening end 64 related to the opening 61 protruding above the concave portion 41 of the concave member 4. As shown in FIG. 4, the length 5 e protrudes from the groove 41 of the channel steel 4a, and the opening end 64 covers the filler 5 filled in the groove 41 and hardened with a caking agent. Stop. The filler 5 is held more firmly in the groove 41 by the open end 64.
Further, as shown in FIG. 5, the width Wf between the open end portions 64 of the upper plate 6 is set larger than the width Wh of the filler 5. Therefore, when the heavy vehicle travels on the grating G, the upper plate 6 has a higher rate of contact with the tire 10, and the upper plate 6 has a higher proportion of the vehicle load than the filler 5. It has become. Most of the load of the heavy vehicle is received by the upper plate 6 and the load applied to the filler 5 is reduced. In FIG. 5, the filler 5 is filled up to the upper surface level of the upper plate 6, but if it is lower than the upper surface, it is difficult to contact the vehicle tire and it is not necessary to receive the vehicle load.

By the way, the grating G of the present embodiment has a configuration in which rainwater flows down from the discharge portions 8 and 8 to the side groove 9 as shown by an arrow L as shown in FIG. The size of the discharge portions 8 and 8 can be determined as appropriate by the width Wu of the upper plate 6 depending on the amount of rainwater, etc., but in order to improve drainage, the flat body 6 of the upper plate 6 has a drainage hole as shown in FIG. A plurality of 62, 62... Can be provided. It is more preferable if the shape of the through hole 62 is a shape such as a flower shape that matches the surrounding landscape. If the through-hole 62 is provided in the plate | board surface which is the plane main body 60 of the upper board 6, a part of grid-like body 1 will be exposed and the rainwater drainage part 8 can be formed. If the number and size of the through-holes 62 play a role of draining rainwater, and drainage can be satisfactorily performed by itself, the discharge portions 8 provided on both sides of the upper plate 6 can be omitted.
In the grating according to the present embodiment, the portion of the discharge portion 8 is a step that is one step lower than the upper plate 6 as shown in FIG. 4, but there is no particular problem because the width of the discharge portion 8 is small. When the width of the discharge portion becomes large, a band plate material that extends only the portion of the main member 11 in the discharge portion region to the level of the upper plate 6 is adopted to eliminate the step at the upper part of the grating.

The grating G configured as described above has the upper plate 6 placed on the concave member 4 as the upper surface of the grating, and is filled in the concave portion 41 of the concave member 4 through the opening 61 provided in the upper plate 6. 5 is exposed, so that even if a heavy vehicle passes over the grating, most of the vehicle load is received by the upper plate 6 and the filler 5 is peeled off or dropped off. Can be prevented. Unlike the gratings of References 1 to 4, since the upper plate 6 is provided on the upper surface of the grating, when the traveling tire of the heavy vehicle passes the grating G, the proportion supported by the filler 5 is reduced. By receiving most of the load of the heavy vehicle, the damage received from the heavy vehicle of the filler 5 in the concave member 4 can be reduced. The filler 5 solidified with a binder such as an adhesive is brittle and easily cracked when a load is applied, but this grating distributes a majority of the load to the upper plate 6 to protect the filler 5. As shown in FIG. 5, the vehicle load is concentrated on the lower surface of one postcard, but most of the lower surface of the tire rests on the upper plate 6 so that most of the vehicle load is received by the upper plate 6 and the filler 5 is broken. There is nothing. Conventionally, peeling and dropping of the filler 5 which has been a problem in this type of grating can be greatly improved. Since the loss and damage of the filler 5 do not occur for a long time, it is useful for quality maintenance and landscape maintenance. Further, since the opening end 64 of the upper plate 6 that forms the opening 61 protrudes on the recess 41 of the concave member 4, the upper portion of the filler 5 is locked by the opening end 64 and the filler into the recess 41 is filled. 5 is further fixed, and the problem of falling off of the filler 5 in the conventional grating is solved.
And since the filler 5 appears on the grating upper surface through the opening 61, it has an anti-slip function and a landscape beauty like the references 1-4. The upper surface of the filler 5 buried in the recesses forms fine irregularities and exhibits an anti-slip function. Furthermore, if the upper plate 6 is formed with a concavo-convex pattern such as a striped steel plate, the grating is more effective for preventing slipping.
When the filler 5 that appears through the upper plate opening 61 is made of beautiful natural stone particles, etc., it is suitable for grating around temples and cultural property protected areas, and when it is made of colorful ceramic particles, it is suitable for grating around towns and parks. Become. Furthermore, if a through-hole is provided in the plate surface of the upper plate 6 and the through-hole is made into a shape such as a flower shape that matches the surrounding landscape, it will be further useful for improving the aesthetic appearance.
The layout of the concave member 4 and the groove width and depth have design freedom. The respective separation distances of the concave members 4, 4,... Can be freely set. The dimensions of the groove width and depth of the concave member 4 can be selected independently. For example, the depth can be reduced and the groove width can be increased to reduce the weight and cost of the grating. Since the discharge portion 8 where a part of the grid-like body 1 is exposed is formed by making the width of the upper plate 6 smaller than between both side plates 21, there is no need to provide a small drainage slit as in References 1-3. The concave member 4 and the filler 5 filled in the concave member 4 can be provided at appropriate intervals according to the purpose and application.

  The present invention is not limited to those shown in the above-described embodiment, and various modifications can be made within the scope of the present invention depending on the purpose and application. The shape, size, number, material, etc. of the grid-like body 1, the rectangular frame part 2, the concave member 4, the filler 5, the upper plate 6, the opening 61, the through hole 62, the discharge part 8, etc. are appropriately selected according to the application. it can. For example, the number of concave members can be selected as appropriate, and there is no need to dispose them at a constant pitch. The shape of the opening 61 does not need to be a uniform shape, and may be a shape having an anti-slip function and a beautiful scenery as appropriate. Moreover, the filler 5 should just be provided with the anti-slip | skid function and scenery beauty, and it has abrasion resistance, and can hold | maintain in the recessed part of a concave member.

It is a perspective view of grating concerning one embodiment of the present invention. It is a top view of the grating of FIG. It is the II sectional view taken on the line of FIG. It is the II-II line expanded sectional view of FIG. It is a principal part expanded sectional view which shows a mode that a vehicle tire passes the grating upper surface.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lattice-like body 11 Main member 12 Connecting material 21 Side plate 4 Recessed member 41 Recessed part (groove)
5 Filling material 6 Upper plate 61 Opening 62 Through hole 64 Opening end G Grating

Claims (3)

A lattice-like body (1) formed in a lattice shape with a plurality of main members and a connecting material, side plates (21) joined to both end faces of the main member, and spaced apart from each other on the main member A plurality of concave members (4) to be placed, a granular filler (5) filled in the concave portions of each concave member and bonded and integrated with each other, and an opening through which the upper surface of the filler is exposed are formed. And an upper plate (6) placed on the concave member with a lateral width smaller than between both side plates so that a part of the grid-like body is exposed. A lattice-like body (1) formed in a lattice shape with a plurality of main members and a connecting material, side plates (21) joined to both end faces of the main member, and spaced apart from each other on the main member A plurality of concave members (4) to be placed, a granular filler (5) filled in the concave portions of each concave member and bonded and integrated with each other, and an opening through which the upper surface of the filler is exposed are formed. And an upper plate (6) placed on the concave member by providing a plurality of through holes on the plate surface so that a part of the grid-like body is exposed. The grating according to claim 1 or 2, wherein an opening end portion of the upper plate (6) forming the opening protrudes onto a concave portion of the concave member (4).

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