JPH06100021B2 - Temporary handrail device for stairs - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a temporary handrail device for ensuring safety, which is provided on an iron staircase before placing concrete in a building under construction, and is economical. It is characterized by its good appearance.

[Conventional technology]

In building construction, steel frames are assembled and iron stairs are constructed between floors, and work on the upper floors is being carried out in sequence. In that case, the stairs were used for raising and lowering workers.

Conventionally, the handrails on the stairs are designed according to the individual stairs (Y) at the site as shown in FIG. 5, and pipes are cut, bent, welded, etc. to form a dedicated handrail (X). Alternatively, a clamp is provided at the lower end of the pillar pipe, a handrail pipe holder is rotatably attached to the side surface of the pillar pipe, and a commercially available pipe is cut into the pipe holder to a required length to form a handrail. (Actual development Sho 58-186050
(See Japanese Patent Publication).

[Problems to be Solved by the Invention]

The former exclusive handrail (X) cannot be reused when trying to use it at other sites because the length and inclination of each staircase are different, and it is only for that site. I was crying. Therefore, it was uneconomical to recreate it at other sites, and it required manpower and time for its production.

In addition, the latter handrail using the pillar pipe having the handrail pipe holder is a commercially available pipe that is cut according to each staircase (site), and the handrail pipe is relatively easy to install. However, there is a case where the cut pipe cannot be used at another site, which is a waste, and in that case, it was necessary to prepare for cutting the pipe at each site.

[Means for Solving the Problems]

The present invention, in order to solve the above problems, one end of a hollow handrail rod is attached to one of the columns provided with an upright fixing metal fitting that is engaged with a side plate of an iron staircase and fixed by sandwiching the side plate at the lower end. Are rotatably attached to the stanchions at appropriate intervals in the vertical direction, and the other stanchions having the same structure as the stanchions have one end of the handrail rod inserted into the hollow handrail rod. It is rotatable with respect to the column and is attached at the same interval in the vertical direction as the above-mentioned hollow handrail rod, and the handrail rod inserted inside is pressed near the tip of the above-mentioned hollow handrail rod. The fixing bolt for fixing is screwed.

[Work]

The temporary handrail device (a) for stairs according to the present invention is vertically fixed to an appropriate position on the side plate of the stairs (Y).

That is, the engaging portion (13) of the upright fixing metal fitting (2) provided at the lower end of the column (1a) is engaged with the side plate of the stairs (Y) and fixed to the upright fixing metal fitting (2) by welding. The bolt (14) is screwed into the nut (15), and the side plate of the stairs (Y) is sandwiched and fixed vertically.

Further, it is inserted into the handrail rods (3a) (3b) (3c), one end of which is rotatably attached to the other column (1b) so that it is between the handrail rods (3a) (3b) (3c). Pull out the handrail bars (4a) (4b) (4c) that can be expanded and contracted and fixed by and tighten them with the fixing bolts (10) at the appropriate position to fix.

And the handrail rods (3a) (3b) (3c) and (4a) (4b)
Prop (1) so that (4c) is parallel to the slope of the stairs (Y).
a) After loosening the nuts (7) for stopping the shaft of (1b),
The b) may be fixed vertically to the stairs (Y) like the support column (1a), and the nut (7) may be tightened.

The temporary handrail device for stairs (a) of the present invention may be provided in an appropriate number according to the length of stairs at various sites.
If the columns (1a) (1b) are too close to each other, it is preferable to provide a reinforcing vertical rod (16) between the handrail rods (3a) (3b) (3c).

〔Example〕

An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a side view showing an actual temporary state.

(A) is a device of the present invention fixed upright on the stairs (Y) side. The device (a) includes two columns (1a) and (1b) arranged at appropriate intervals and a column ( An appropriate number of hollow handrails (3a) (3b) with one end rotatably attached to 1a)
(3c) and the hollow handrail rods (3a) (3b) (3c), one end of which is rotatable with respect to the other column (1b) and the hollow handrail rods (3a) (3b) ( 3c) handrail rods (4a) (4b) (4c) that are attached at the same vertical intervals as the vertical direction, and upright fixing fittings (2) provided at the lower ends of the columns (1a) (1b), respectively. It consists of and.

FIG. 2 shows the details of the device (a). That is, the handrail rod (3
a) (3b) (3c) and (4a) (4b) (4c), the handrail rods (4a) (4b) (4c) are hollow handrail rods (3a) (3b) (3
c) and the diameter of the handrail rod (3
a) (3b) (3c) and (4a) (4b) (4c) are configured to be expandable.

That is, the handrail rod (4
a) (4b) (4c) is inserted into the handrail rods (3a) (3b) (3c) to be in a compact state shown by a solid line in the drawings.

Then, at the time of use, the fixing bolt (10) described later is loosened and the handrail rods (4a) (4b) (4c) are attached to the handrail rods (3a) (3
b) It is pulled out from (3c), the support (1b) is moved to the left, and the fixing bolt (10) is tightened in the state shown by the chain double-dashed line.

FIG. 3 shows a cross-sectional view of the mounting portion of the handrail rods (3a) (3b) (3c) rotatably mounted on the column (1a).

Note that the handrail rod (4a) that can be attached to the other column (1b)
The mounting parts of (4b) and (4c) have the same structure.

That is, the handrail rod (3a) attached to the column (1a)
(3b) Bolts (5) by welding at appropriate positions on one end of (3c)
Are fixed, inserted into holes (6) provided in the support (1a), and nuts (7) are screwed into the protrusions thereof.

Further, a screw hole (8) is provided in advance at an appropriate position on the lower surface near the tips of the handrail rods (3a) (3b) (3c), and the nut (9) is fitted to the screw hole (8). A handrail rod (4) fixed by welding and screwed with a fixing bolt (10) to the nut (9) and inserted into the handrail rods (3a) (3b) (3c).
It is configured so that a) (4b) and (4c) can be pressed and fixed at appropriate positions.

In the above embodiment, the columns (1a) and (1b) and the handrails (3a) (3b) (3c) and (4) that are rotatably attached thereto are provided.
a), (4b) and (4c) are not fixed, but are rotatable and can be fixed at a predetermined position.

Therefore, the columns (1a) (1b) are attached vertically to the stairs (Y), and the handrail rods (3a) (3b) (3c) and (4a) (4b)
(4c) can be attached in parallel with the stairs (Y), and it has a good appearance.

FIG. 4 shows an exploded perspective view of the upright fixing bracket (2).

(1a) is a strut, and the strut (1b) part has the same structure.

The upright fixing bracket (2) has bolts (11) at the lower end of the column (1a).
a) (11b) and nuts (12a) and (12b), and the engaging part (13) to the side plate of the stairs (Y) at the proper position.
After engaging the engaging part (13) with the side plate of the stairs (Y), the bolt (14) is screwed into the nut (15) fixed to the upright fixing bracket (2) by welding. Then, the side plate of the stairs (Y) is clamped and fixed.

In the figure, (16) is a handrail rod (3a) (3b) (3c) if necessary
Reinforcing vertical rods provided between them, and the mounting portions thereof have the same structure as in FIG.

〔The invention's effect〕

As described above, according to the present invention, it is not necessary to design according to the stairs of each individual site as in the conventional case, and further, it is not necessary to cut and use a commercially available pipe to form a framework, and to install and use according to various sites. In addition to being extremely economical, it is easy to assemble and dismantle, and it is possible to perform work quickly without manpower and time, and it has a good appearance.

[Brief description of drawings]

The drawings show one embodiment of the present invention. FIG. 1 is a side view showing a temporary state, FIG. 2 is a front view of an apparatus of the present invention, and FIG.
2 is a sectional view taken along the line AA in FIG. 2, FIG. 4 is an exploded perspective view of the upright fixing metal fitting portion, and FIG. 5 is a perspective view showing a conventional example. (1a) (1b) …… Posts, (2) …… Standing fixtures, (3
a) (3b) (3c) (4a) (4b) (4c) ... railing rod,
(Y) …… Stairs.

Continuation of the front page (56) References Photographs of the specifications and drawings attached to the application for Jitsukō Sho-58-748 (JP, Y2), Jpn. Microfilm (JP, U) Practical Application Microfilm (JP, U) Practical Application in which the description and drawings attached to the application for Sho-49-140283 (Saikai-Sho-51-65517) were photographed Microfilm (JP, U) Photograph of the details and drawings attached to the application for Sho 47-28968 (Actual exploitation Sho 48-106921) Application 47-127400 (Activation Sho 49- 81727) and the specification attached to the application of Microfilm (JP, U) Practical Application Sho 62-29688 (Actual Development Sho 63-179354) A microfilm (JP, U) of which the contents of the drawing were photographed. Microfilm on which the contents of the text and drawings are taken (JP, U) Microfilm on which the contents of the specifications and drawings are attached to the application for Japanese Patent Application No. Sho 61-32593 (No. Sho 62-144346) (JP, U)

Claims (1)

[Claims] 1. One end of a hollow handrail rod is attached to one of the columns at the lower end of which is provided a standing fixing metal fitting which is engaged with a side plate of an iron staircase and fixed by sandwiching the side plate. One end of the handrail rod to be inserted into the hollow handrail rod is attached to the other strut that is rotatably mounted and has an appropriate number of intervals in the vertical direction, and is attached to the other strut having the same configuration as the above-mentioned strut. Fixed so as to be freely rotatable and vertically spaced at the same distance as the hollow handrail rod, and pressurize and fix the handrail rod inserted inside near the tip of the hollow handrail rod. A temporary handrail device for stairs, characterized in that bolts are screwed together.