JPH0230490Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field of the invention] The invention is applicable to railings installed on bridges, etc.
In particular, it relates to a balustrade having a structure that requires only punching and press working and does not require welding.

[Technical background of the invention and its problems]

Generally, handrails installed on bridges, etc. are designed to ensure the safety of pedestrians crossing the bridge and to prevent vehicles from falling while passing by, so they must be sufficiently strong. .

On the other hand, it is important not to focus solely on strength without giving consideration to appearance, and in particular, it is necessary to ensure that aesthetics are not impaired.

For the above reasons, even if steel materials are used to manufacture the balustrade, conventionally it has to be done by combining several types of round bars and steel plates, and in order to integrate these, welding or riveting is required. Therefore, it requires a lot of time and cost in terms of manufacturing man-hours and materials.

[Purpose of invention]

In view of this, the present invention aims to provide a parapet with a structure that can be manufactured from a single steel plate, saves man-hours and materials required for manufacturing, can be manufactured in a short time, and is inexpensive. It has been done.

[Summary of the idea]

In order to achieve the above objective, this invention requires only punching and press processing of a single steel plate, and by integrally forming it, welding, riveting, etc. are completely unnecessary except when installing in a long length. It is characterized by its structure.

[Example of idea]

An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

The railing 1 according to the present invention is made of one steel plate 2 having an appropriate height and length, as partially shown in FIG.
By forming cuts 4 extending from the lower end to a position 3 at a predetermined height at a predetermined interval by pressing, a column portion 5 is formed between adjacent cuts 4, 4.
₁ , 5 ₂ , 5 ₃ , 5 ₄ , . . . are formed.

The portion above the predetermined height position 3 is covered with a cap 6
This part is bent into a desired shape, such as a circular or square cross section, by press working.

The terminal ends of the cuts 4 corresponding to positions 3 at a predetermined height from the lower end all have the same height and are perpendicular to the height direction of the steel plate 2,
A folding line 7 is formed at the upper end portion of each of the pillar portions 5 ₁ , 5 ₂ , 5 ₃ , 5 ₄ , . . . .

However, in order to install the lever railings 1 at the ends of both sides of a bridge, etc., first the column parts 5 ₁ , 5 ₂ , 5 ₃ , 5 ₄ ,...
Every other portion is pulled up to one side with the bending line 7 as a reference, so that a predetermined angle θ is formed between the remaining pillar portions 5 ₂ , 5 ₄ .

Then, when the raised pillars 5 ₁ , 5 ₃ , ... are turned vertically toward the front, the remaining pillars 5 ₂ , 5 ₄ , ... are tilted backward, and their legs 5a are aligned with the raised pillars 5 ₁ , . 5 ₃ ,…
The legs 5b are located a predetermined distance behind the legs 5b, and the legs are spread apart from each other.

In order to make the legs 5a of the remaining column parts 5 ₂ , 5 ₄ , ... parallel to the legs 5 b of the raised column parts 5 ₁ , 5 ₃ , ... It is better to fold it so that the bottom edges of both legs are aligned.

In this state, the handrail mounting foundations 8 on the side edges of the concrete slab 8, which are the handrail mounting parts at both ends of a bridge, etc.
The installation work is completed by burying both legs 5a and 5b of the above-mentioned balustrade 1 in part A.

At this time, the portion of the cap 6 of the railing 1 that is bent into a circular or square shape serves as a handrail.

However, when embedding the legs in concrete, if the column parts 5 ₁ , 5 ₂ ... are not strong enough if they are flat, they may be bent into an L-shaped cross section from the lower end to the middle, as shown in Figure 4. By applying this, the strength against bending can be increased.

When the railings shown in Figures 1 and 2 are installed as shown in Figure 3, when viewed from the front,
Because it appears to be blocked by all the pillars, even if you try to see the outside scenery through the gaps in the railings, you will not be able to see it, and as a result, it may feel dark in terms of daylight.

In such a case, columns 5 ₁ , 5 ₂ ,
Among the pillars 5 ₃ , 5 ₄ , ..., the pillar parts 5 ₂ , 5 ₄ , ... are cut off on the bending line 7, and if a space is created by raising the pillars 5 ₁ , 5 ₃ , ..., the cutting can be done. fallen pillar 5 ₂ ,
You can see the outside scenery from between 5 ₄ ,...
In addition, the problem of feeling dark in terms of lighting is also solved.

Note that the portion corresponding to the cap and the portion corresponding to the pillar portion are not limited to the illustrated embodiment, and various shapes can be considered.

Furthermore, although the present invention has been described as an example of a bridge railing, the present invention is not limited to this, and it goes without saying that it can also be used as a handrail on a balcony or a hallway.

[Effect of the merits]

As explained above, according to the present invention, a single steel plate can be pressed and formed by pressing, and although it has a simple structure that does not require any welding, it performs functions that are different from conventional ones. Not only is there no difference, but the number of man-hours required for installing the railing is short, and it can be done at an extremely low cost.

[Brief explanation of drawings]

Figure 1 is a front view showing one embodiment of the present invention;
The figure is a side view of Figure 1, Figure 3 is a perspective view showing the installed state of the balustrade of the present invention, Figure 4 is another modification of the leg of the balustrade of the present invention, and Figure 5 is the column of Figure 3. FIG. 7 is a perspective view of another embodiment in which a space is provided in between. 1... Railing, 2... Steel plate, 4... Cut, 5 ₁ ,
5 ₂ , 5 ₃ , 5 ₄ , ... pillar part, 5a, 5b ... leg,
6... Kasakibe.

Claims (1)

[Scope of utility model registration request] By forming the upper part of one steel plate having an appropriate height and length into a cap with a circular or other appropriate cross-sectional shape, and providing parallel cuts to each other at required intervals from the lower end upwards in the lower part, multiple pieces can be formed. A balustrade formed by forming pillars, expanding the adjacent pillars so as to separate them from each other in the front and back, and fixing them buried in the foundation.