JPS5920499Y2 - unit stairs - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a unit staircase.

Conventionally, unit steel staircases are built into the building frame by laminating them one after another, but since the pillars that make up the framework that supports this type of staircase are thick square pipes, When the columns are embedded in the frame, the cover becomes thicker, and as a result, the wall becomes thicker, so it may be necessary to place reinforcement in the cover apart from the wall reinforcement, which reduces work efficiency. There were times when I was invited.

There are also some that have a place attached to this framework, but this increases the overall weight of the unit staircase, making it inconvenient to handle.

Furthermore, when using the unit stairs as a substitute for scaffolding during construction, there was a risk that workers would accidentally fall between the frames.

The present invention eliminates the above-mentioned drawbacks, and embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, a framework 1 in a unit staircase is formed into a rectangular parallelepiped or a cube (rectangular parallelepiped in the drawing) by pillars 2 as vertical frame members and cross beam members 3 as horizontal frame members.

Although both of the pillars and the cross beam members are thin pipes, they are not necessarily limited to pipes.

A wire mesh 4 for preventing concrete peeling is stretched on both sides and the back of the framework 1.

The outer peripheral ends of this wire mesh are fixed to the outer surfaces of the pillars 2 and the cross beams 3 by welding (FIG. 2).

Furthermore, the framework 1 supports a pair of stairs 5 and 6 in a rectangular shape.

In the illustrated example, the lower end of the lower staircase 5 is fixed to the lower cross beam 3a on the front surface of the framework 1, and the lower end of the lower staircase 5
Its upper end is fixed to the upper cross beam member 3b.

The stairs 5 and 6 are connected by a landing 7.

Next, installation of the unit staircase will be explained.

After the unit staircase is lifted by a crane or the like and installed at a predetermined position, wall reinforcing bars 8 are arranged on the outside of the wire mesh 4 of the framework 1, as shown in FIGS. 2 and 3.

and formwork (not shown).

) Concrete is placed between them, the framework is embedded in the wall 9, and the unit stairs are integrated into the frame.

Since the pillars 2 and cross beams 3 of the framework 1 are thin, the second
As shown in the figure, the thickness of the cover portion 10 can be reduced.

The type of stairs is not limited to the upper dog-shaped one.

For example, as shown in FIG. 4, a straight staircase 11 may be supported on a framework 1a, in which case the wire mesh 4a may be stretched on both sides of the framework.

In addition, as a staircase, a bent staircase 12 as shown in Figures 5 and 6 is used.
In this case, the wire mesh 4b is stretched over both sides and the back of the framework 1b.

13 is the landing. As explained above, according to the present invention, the covering portion can be made thinner, so that the conventional reinforcement work is not required, and the installation of the unit staircase can be made more efficient.

In addition, since wire mesh is used, it is lighter in weight compared to conventional places, is easier to handle, reduces the amount of mesh material, and because this wire mesh plays the role of a curing wire mesh. , there is no danger of workers falling even if the unit stairs are used as scaffolding.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing one embodiment of the present invention, Fig. 2 is an enlarged sectional view showing a part of the unit staircase installed, and Fig. 3 is a perspective view showing an embodiment of the present invention.
The figure is a plan sectional view showing the state in which the unit staircase is installed, FIG. 4 is a perspective view showing another embodiment, FIG. 5 is a perspective view showing still another embodiment, and FIG. 6 is a plan view of FIG. 5. It is a diagram. 1.1 a, 1 b...-Framework, 2...
・Column, 3, 3 a, 3 b... Cross beam material, 4
, 4 a, 4 b... wire mesh, 5, 6, 11.
12...stairs, 7, 13... landing.

Claims (1)

[Scope of Claim for Utility Model Registration] A frame formed of a rectangular parallelepiped or cube formed by thin vertical and horizontal frame members, a staircase supporting this frame, and a staircase extending from at least both sides of the framework. A unit staircase consisting of wire mesh.