JPH0448279Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to footboards or scaffolding boards used for temporary scaffolding.

[Conventional technology and problems]

Step boards and scaffolding boards made of steel or aluminum have downward facing side plates on both sides of the top plate and bottom plates that extend inward from the lower edges of both sides to form the main body of the scaffolding board. Reinforcement ribs are placed on the back side,
The structure improves the bending strength of the main body.

By the way, conventional reinforcing ribs have a U-shaped planar shape and are formed to a length that just fits between the two side boards, so when they are installed inside the back of the scaffolding board body, they must be inserted from the end of the scaffolding board body. There is a problem that workability during assembly is poor.

In other words, in a rib formed in a U-shape in plan, the length connecting one end of the rib body and the tip of the bent piece provided at the other end is longer than the width between both side plates, and as a result, the length of the rib body is longer than the width between the two side plates. Even if you try to fit the reinforcing ribs on the back side, they will get stuck between the plates on both sides.

[Purpose of invention]

This invention was made in view of the above points, and the purpose is to provide a scaffolding board that can be fixed by directly incorporating reinforcing ribs from the back side of the scaffolding board main body.

[Means for solving problems]

In order to solve the above-mentioned problems, this invention has a scaffold board body formed by providing downward side plates on both sides of the top plate and bottom plates that extend inward from the lower edges of both side plates and bend inward. , consisting of reinforcing ribs arranged overlappingly on the back surface of the scaffold board main body, and the reinforcing ribs have a length that fits between both side boards along the width direction of the scaffold board main body, and a width that fits loosely between the top plate and the bottom board. A bending piece is formed at both ends of the side plate and protrudes in opposite directions, and the overlapping portion of the bending piece and the side plate is fixed.

[Effect]

A reinforcing rib is installed on the back side of the scaffold board body so that it overlaps the back side of the top plate from the opening between both bottom plates, and when this reinforcing rib is rotated, the rib body fits between both side boards and the bent pieces at both ends are folded. By overlapping the side plate and fixing the overlapping portion of the bent piece and the side plate by caulking, the reinforcing rib can be fixed to the scaffold board main body.

〔Example〕

Hereinafter, embodiments of this invention will be described based on the accompanying drawings.

As shown in the diagram, the scaffold board body 1 made of steel plate or aluminum
On both sides of the strip top plate 2, there are side plates 3 facing downward,
In order to improve the bending strength of the top plate 2, it has a cross-sectional shape with bottom plates 4 facing inward from the lower edges of both side plates 3 and low rising plates 5 pointing upward from the ends of the bottom plate 4. A plurality of ribs 6 are formed in the longitudinal direction of the top plate 2 at predetermined intervals in the width direction so as to protrude toward the back side.

Although not shown, a non-slip protrusion is formed on the top surface of the top plate 2.

A cover 7 is fitted to both ends of the scaffold board main body 1, and a top plate 2 is attached to the back side of the top plate 2.
A large number of reinforcing ribs 8 are attached at predetermined intervals in the longitudinal direction.

The reinforcing ribs 8 are arranged at right angles in opposite directions to both ends of the strip-shaped substrate 9, which has an equal length between the opposing surfaces of the side plates 3 and a vertical width that loosely fits into the gap between the rib 6 and the rising plate 5. Bent pieces 10, 10 that are bent to
The strip-shaped substrate 9 is provided with ribs 11 along the longitudinal direction in order to improve bending strength.
is provided.

Notches 12 are provided intermittently on the upper edge of the strip-shaped substrate 9 to allow the ribs 6 of the top plate 2 to escape, and protrusions 13 are provided on the lower edge at positions corresponding to the notches 12.

In this way, the notch 12 on the upper edge and the protrusion 13 on the lower edge
Having the same shape has the advantage that the reinforcing ribs 8 can be cut and formed from the metal plate using a single blade.

The reinforcing ribs 8 incorporated inside the scaffold board main body 1 are
By aligning the strip-shaped substrate 9 in the width direction of the top plate 2, the bent pieces 10, 10 at both ends overlap the inner surfaces of the side plates 3, 3, and the overlapping portion of the bent pieces 10 and the side plates 3 is shown in FIG. As shown, it is fixed by a caulking portion 14 formed from the outer surface of the side plate 3.

Next, the covers 7 at both ends are formed into a U-shaped cross section to fit over the ends of the scaffold board main body 1, and bent plates 15 are provided at both ends to overlap the outer surfaces of the side plates 3. The overlapping portions of 15 are fixed by caulking portions 16.

On the vertical end wall 17 of the cover 7, at a position corresponding to the rib 6 formed on the top plate 2 of the scaffold board main body 1,
A stepped portion 18 supporting the rib 6 is formed by stamping as shown in FIG.

The caulking parts 14 and 16 are for pressing and deforming two overlapping metal plates into one body, as shown in Fig. 4, and in addition to the V-shape as shown in the figure, the caulking parts 14 and 16 have cylindrical and other shapes. It may be formed into a rectangular tube shape.

Further, the scaffolding board may be any scaffolding board as long as it has the function of a scaffolding board and a walking board, such as one in which two scaffolding board bodies 1 are arranged side by side and joined together, or one in which hooks are fixed to both ends.

The scaffolding board of this invention has the above structure,
To attach the reinforcing ribs 8 to the scaffold board main body 1, as shown by the dashed line in FIG.
By diagonally dropping the reinforcing ribs 8 into the openings formed between the scaffolding boards 1 and 4, and then rotating the reinforcing ribs 8 along the width direction of the scaffold board main body 1, the bent pieces 10 and 1 at both ends are bent.
0 will overlap the inner surfaces of the side plates 3, 3,
With the upper edges of the reinforcing ribs 8 in contact with the back surface of the top plate 2, the bent pieces 10, 10 are fixed to the side plates 3, 3 by caulking parts 14.

In this way, the reinforcing rib 8 has bent pieces 10 at both ends.
and 10 are formed so as to face in opposite directions, so that the installation on the back side of the scaffold board main body 1 is easy.
This can be done from the back side of the top plate 2 by a rotational operation, which greatly improves work efficiency compared to the case where the scaffold board is inserted from the end of the main body 1.

〔effect〕

As described above, according to this invention, the reinforcing ribs that improve the bending strength of the scaffold board body and prevent buckling of the top board are formed so that the bent pieces at both ends protrude in opposite directions. The reinforcing ribs can be incorporated into the board main body from the bottom side of the scaffold board main body, and the efficiency of scaffold board assembly can be improved.

[Brief explanation of the drawing]

Fig. 1 is a bottom view showing an example of a scaffold board according to this invention, Fig. 2 is an enlarged vertical sectional view taken along the arrow - in Fig. 1, and Fig. 3 is a longitudinal sectional view taken along the arrow - in Fig. 2. 4 is a cross-sectional plan view of the portion indicated by the arrow - in FIG. 3, FIG. 5 is an exploded perspective view of the essential parts of the same, and FIG. 6 is a perspective view showing the stepped portion of the cover. 1...scaffold board main body, 2...top board, 3...side board,
4...Bottom plate, 7...Cover, 8...Reinforcement rib, 1
0...Bent piece, 14...Crimped part.

Claims (1)

[Scope of utility model registration request] A scaffolding board main body formed by providing downward facing side plates and a bottom plate extending inward from the lower edges of both side boards and bending inward on both sides of the top board, and reinforcing ribs arranged overlappingly on the back side of the scaffolding board main body. The reinforcing ribs are formed along the width direction of the scaffolding board body, with a length that fits between both side boards, and a width that fits loosely between the top and bottom boards, with bends that protrude in opposite directions at both ends. A scaffolding board characterized in that a piece is provided, and the overlapping part of the bent piece and the side plate is fixed.