JPH0248545Y2 - - Google Patents

Description

[Detailed explanation of the invention] (1) Industrial application field This invention relates to a grid plate installed in water channels, etc.

(2) Prior Art The grid plate of this type shown in FIG. 8 is generally known, and this plate 01 has a plurality of horizontal bars 02 arranged in parallel at predetermined intervals. This horizontal bar 02 is made up of a plurality of vertical bars 03 arranged in parallel at predetermined intervals in a direction that intersects with the horizontal bar 02. The vertical bar 03 has an upper horizontal part 06 that is wider than a lower horizontal part 08 connected via a vertical part 07, while the horizontal bar 02 has a lower horizontal part 08 of the vertical bar 03 and a part of the vertical part 07. A notch 09 into which the two are slidably fitted, and step portions 010 which receive both side edges of the upper horizontal portion 06 are formed on both sides of the upper end opening of the notch 09.

In the case of this board 01, when assembling,
By fitting the notch 09 of the horizontal bar 02 into one end of the lower horizontal part 08 of the vertical bar 03 and sliding the horizontal bar 02 to a predetermined position, the horizontal bar 0 is sequentially attached to the vertical bar 03.
2 are assembled to form a grid-like structure as a whole.

(3) Problems to be solved by the invention By the way, in the above-mentioned lattice plate 01, since notches 09 and stepped portions 010 are formed in the horizontal bars 02, the strength after assembly is not sufficiently exhibited. After installation, there was a problem in that it easily deformed when a large load was applied from above.

Also, the lower horizontal part 08 of the vertical beam 03 is assembled.
Since the horizontal crosspiece 02 with a notch 09 fitted at one end thereof is slid to a predetermined position, there is a problem that the work is time-consuming and the assembly work efficiency is low.

Therefore, the technical problem of this invention is to maintain a high strength after assembly and to make the assembly easy.

(4) Means for solving the problem In order to achieve the above technical problem, this invention has a plurality of horizontal bars arranged in parallel at predetermined intervals, and the directions that intersect with each other on these horizontal bars. A plurality of vertical bars are arranged in parallel at predetermined intervals, and a plurality of vertical bars are slidably fitted into the horizontal bars between these vertical bars to position and hold the vertical bars at predetermined positions on the horizontal bars. The spacer is characterized in that recesses are provided on both sides of the vertical bar facing the horizontal bar, and the spacer is provided with convex portions that fit into these recesses when being positioned and held.

(5) Effect If the technical means described above is adopted, there is no need to form a notch or the like in the horizontal crosspiece, and therefore it becomes possible to maintain a high strength after assembly. Moreover, assembly is easy and takes only a short time, as it is only necessary to slide the spacer fitted to the horizontal bar and fit its convex portion into the recessed portion of the vertical bar disposed on the horizontal bar.

(6) Embodiment An embodiment of this invention will be described below with reference to the drawings. In this embodiment, a groove cover suitable for drainage ditches, etc. is applied. In Figs. 1 to 4, reference numeral 1 is a lattice-shaped groove cover, which has a plurality of horizontal bars arranged in parallel at predetermined intervals. 2, a plurality of vertical bars 3 arranged in parallel at predetermined intervals in an intersecting direction on the horizontal bar 2, and a plurality of vertical bars 3 that are slidably fitted to the horizontal bar 2 and are arranged between the vertical bars 3. A plurality of spacers 5 are arranged to position and hold the vertical bar 3 at a predetermined position on the horizontal bar 2.

As shown in Fig. 5, the horizontal beam 2 is made of a hollow pipe with a square cross section, made of FRP pultrusion molding material, and cut into lengths of several meters in consideration of transportation. The material of the horizontal bar 2 is not limited to FRP, but may also be made of synthetic resin, steel, or aluminum. Further, the shape of the cross section may be round or polygonal including square.

As shown in FIG. 6, the vertical beam 3 has an approximately I-shaped cross section in which the upper horizontal portion 6 is wider than the lower horizontal portion 8 connected via the vertical portion 7, and this is also made of FRP pultrusion. It is made of molded material. On both side surfaces of the vertical beam 3, a recess 10 is formed by both horizontal parts 6, 8 and a vertical part 7, into which a convex part, which will be described later, provided on the spacer 5 is fitted.

As shown in FIG. 7, the spacer 5 includes a lower frame 13 having a through hole 12 that slidably fits into the horizontal beam 2.
The upper frame 16 is formed integrally on the lower frame 13 and has convex portions 15 on both sides facing toward the through hole 12. The spacer 5 is made of synthetic resin or FRP, and is manufactured by molding. A bolt insertion hole 18 is bored in the lower frame 13 of the spacer 5. As shown in FIGS. 3 and 4, this bolt insertion hole 18 is provided only in the spacer 5 that is fitted to both ends of the horizontal beam 2, and is not necessary for the other spacers 5.

A bolt 20 is inserted between the bolt insertion holes 18 of the spacer through the bolt insertion holes 19 of the horizontal beam 2 to fix both.

Next, a procedure for assembling the groove cover 1 using each of the above-mentioned members will be explained.

First, a required number of spacers 5 are slidably fitted and attached to the horizontal beam 2 through the through holes 12. Then, a bolt 20 is inserted between the bolt insertion hole 18 of the spacer 5 located at one end of the horizontal beam 2 via the bolt insertion hole 19 of the horizontal beam 2, and the bolt 20 is inserted between the spacer 5 and the horizontal beam 2.
to be fixed.

Next, a plurality of horizontal bars 2 equipped with spacers 5 are arranged in parallel at predetermined intervals, and vertical bars 3 are arranged between these horizontal bars 2 in an intersecting direction. The concave portion 10 on one side of the fixing spacer 5 is fitted into the convex portion 15 of the fixed spacer 5. After that, the fixed spacer 5 and the adjacent spacer 5 are attached to each horizontal bar 2.
The top is slid and the convex portion 15 is fitted into the concave portion 10 on the other side of the vertical beam 3. As a result, the first vertical bar 3 is positioned and held with the convex portions 15 of the pair of spacers 5 fitted into the concave portions 10 on both sides, and is prevented from slipping out upward.

Next, a second vertical bar 3 is placed between the horizontal bars 2, and the concave portion 10 on one side of the second vertical bar 3 is similarly fitted into the convex portion 15 of the spacer 5.
The arrangement and fitting of the spacer 5 and the sliding fitting of the spacer 5 are repeated alternately. Then, the convex portion 15 of the rearmost spacer 5
After fitting into the recess 10 on the other side of the vertical bar 3, insert the bolt 20 between the bolt insertion holes 18 of the spacer 5 located at the other end of the horizontal bar 2 through the bolt insertion holes 19 of the horizontal bar 2. The spacer 5 and the horizontal beam 2 are fixed through the insertion. As a result, the assembly work is completed, and the groove cover 1 in a lattice shape as shown in FIGS. 1 and 2 is completed.

The above-mentioned assembly work is performed exclusively on-site, and the equipment is transported to the site in a disassembled state.

In addition, the spacer 5 and both crosspieces 2,
The structure of No. 3 and the structure of the uneven portions 10 and 15 are merely examples, and it goes without saying that various structures can be used without changing the gist of the invention. In addition, although the example uses a groove cover for a water channel as an example, it can also be applied to other uses, such as floor boards of various structures such as power plants and bridges.

(7) Effects of the device This device, as described above, can maintain high strength after assembly, and can effectively prevent deformation caused by large loads applied from above after installation. . Furthermore, assembly work is easy and takes only a short time, significantly improving on-site assembly work efficiency. Furthermore, since the horizontal bars can be manufactured by pultrusion molding, it is extremely easy to make horizontal bars of a predetermined length. This has the excellent effect of greatly reducing the troublesome work that would otherwise be required if several pieces are joined together during construction.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing an embodiment of this invention, Fig. 2 is a front view of the same as above, Fig. 3 is a partially enlarged side sectional view taken along the - line of Fig. 1, and Fig. 4 is a view of Fig. 1. of-
FIG. 5 is a partial perspective view of the horizontal beam, FIG. 6 is a partial perspective view of the vertical beam, FIG. 7 is a perspective view of the spacer, and FIG. 8 is a conventional example. It is a partially enlarged side sectional view shown. 1...Gutter cover, 2...Horizontal bar, 3...Vertical bar, 5...
Spacer, 6... Upper horizontal part, 7... Vertical part, 8
... lower horizontal part, 10 ... recess, 12 ... through hole, 13 ... lower frame, 15 ... convex part, 16 ... upper frame, 18, 19 ... bolt insertion hole, 20 ... bolt.

Claims (1)

[Scope of utility model registration request] A plurality of horizontal bars arranged in parallel at predetermined intervals, and a plurality of vertical bars arranged in parallel at predetermined intervals in a direction that intersects the horizontal bars.
A plurality of spacers are slidably fitted into the horizontal bars between the vertical bars to position and hold the vertical bars at predetermined positions on the horizontal bars, and recesses are provided on both sides of the vertical bars facing the horizontal bar. A lattice-like plate characterized in that the spacer is provided with convex portions that fit into these concave portions when being positioned and held.