JP2583065B2 - Assembling stairs - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a prefabricated staircase.

2. Description of the Related Art Conventionally, steel-framed stairs having a fire-resistant structure other than concrete and a simple fire-resistant structure have been widely used.
Especially, the emergency stairs are mostly steel stairs.

Generally, steel stairs used for such building construction and house construction are manufactured by an integrated method of single-piece production, and are transported and brought in assembling them together in advance in a factory.
The stage carried to the site is suspended by heavy equipment such as a crane and installed at a predetermined position.

As an alternative to such an integrated staircase, various types of assembling staircases have conventionally been devised, and there is a method in which members manufactured in advance at a factory are assembled on site by bolting.

Problems to be Solved by the Invention In the above-mentioned conventional steel stairs, the integrated type stairs have a very large package compared to its weight during transportation and loading due to its unique shape, and a loss in transportation is reduced. It is large and uneconomical, and heavy machinery such as a crane is required for loading and unloading or hanging at the site, which also has the disadvantage of increasing costs.

The assembly type staircase has solved such disadvantages, however, in the conventional assembly type stage, the appearance of the joint is poor due to the head of the bolt for connection being exposed to the outside, and Sasara girders and the like are used to transport and attach preformed ones of a length suitable for each building, and there is an inconvenience that the length of stairs in various buildings cannot be arbitrarily adjusted on site.

The present invention solves such a conventional drawback, and reduces the transportation and carry-in cost at the site compared to the conventional integrated stairs, and reduces the installation cost at the site. An object of the present invention is to provide an assembling staircase which has a good appearance and can be arbitrarily changed according to the length of various stairs.

Means for Solving the Problems In order to achieve the above object, according to the present invention, there is provided a stair including a pair of sashes arranged along a vertical direction and a step plate attached between the sashes. The said girders are composed of a pair of upper and lower frames interposed between a pair of inner and outer saraser plates and both saraser plates,
Each of the plates is divided into a plurality of plates in the vertical direction, and bolts protruding from the outer plate are inserted into the frame and the inner plate to be fastened and fixed to each other.

Embodiment FIG. 2 shows an assembled state of a staircase according to the present invention. Basically, a pair of left and right girders (1) and (1) are arranged along a vertical direction. (1) Stepboards (2) (2) attached to the hand, handrails (3) (3) attached to the above-mentioned slabs (1) (1),
Each of the handrails (3) (3) is composed of a pair of left and right handrails (4) (4) that are bridged upward.

The girders (1) are formed by a steel plate, as shown in FIG. 1, and are formed of a plurality of outer sarsar plates (5), (5)... Similarly, a plurality of inner slat plates (6) (6), which are similarly formed in the longitudinal direction, and a pair of upper and lower angle material frames interposed between the inner and outer sara plates (5) and (6). (7) It consists of (7).

On the inner surface of each outer plate (5) (5) ...
At the upper and lower side edges, joining bolts (8) (8) ...
Are provided, and bolt holes (9) (10) are previously formed in the frames (7) (7) and the inner side plates (6) (6)... Corresponding to these bolts (8) (8). Is formed. The vertical portions of the frames (7) and (7) are interposed between the outer and inner side plates (5) and (6) on both upper and lower sides, and the bolts (8) and (8) are provided. ... these frames (7)
And bolt holes (9) (10) in inner plate (6)
And the inner surface plate (6) as shown in FIG.
These are fixed together by tightening the nuts (11) screwed inside. At this time, frame (7)
Like the above-mentioned sasara plates (5) and (6), they are formed in the longitudinal direction, but are divided into the longitudinal connecting portions of the frame (7) and the longitudinal connecting portions of the saras plates (5) and (6). Are different from each other in position, and the inner and outer plates (6) and (6)... And the outer and outer plates (5) and (5). .

The handrail (3) is made of a band plate, and has a mounting plate (12) integrally fixed to the lower end thereof. As shown in FIGS. 4 and 5, the handrail (3) is At the bottom
The outer plate (5) is interposed in the gap at the seam between the (5) and the mounting plate (12),
Outer surface plate (5) and inner surface plate (6)
Interposed in the gap between the two plates (5)
(6). At this time, the mounting plate (12) is connected to the upper frame (7) and the lower frame (7).
, The movement in the vertical and horizontal directions is regulated by these.

Next, step plate support bolts (13) and (13) are integrally provided on the inner side surface of the inner surface plate (6), respectively. The support bolt (13) is provided with a step made of a short angle material. The plate support (14) was attached, the end of the step (15) was placed on the step support (14), and as shown in FIG. 3, it protruded from the lower surface of the step (15). Bolt (16)
Into the bolt holes of the support bracket (14) to tighten and fix.

After the assembling of the girder (1) and the step board (2) as described above, the handrails (4) and (4) are attached to the upper ends of the handrails (3) and (3) to complete the assembly. Things.
Note that a riser may be attached to the gap between the step boards (2) (2).

Although the above description is directed to a straight staircase, the present invention can also be applied to a bent staircase or a curved staircase.

Effect of the Invention As described above, the staircase of the present invention is one in which each member is carried into the site and assembled. Compared with an integrated staircase in which the members are assembled in advance and brought into the site, the transportation cost is lower. In addition, the effect that a large machine such as a crane is not required can be obtained. Further, in the assembly type staircase of the present invention, since the bolts projecting from the outer plate are inserted into the frame and the inner plate to assemble, the bolts are not seen from the outside of the plate, and Since the tip and the nut are hidden by the step board, the appearance is good. Moreover, since each of the plates is divided in the longitudinal direction, the members for transportation and carrying in are reduced in size, which facilitates the handling.In addition, by increasing or decreasing the number of such divided plates, It is possible to cope with stairs of various lengths, and it is possible to obtain an effect that it is not necessary to specially manufacture a sasara plate or the like according to the length of the stairs.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an essential part showing an embodiment of the present invention, FIG. 2 is a perspective view showing an assembling state of a staircase, FIG. FIG. 4 is a cross-sectional view showing the handrail at the mounting part, and FIG. 5 is a longitudinal sectional view showing the main part also showing the handrail at the mounting part. (1) ... sara girder, (2) ... step board, (5) ... outer sara plate, (6) ... inner sara plate, (7) ... frame, (8) ... bolt.

Claims (2)

(57) [Claims] 1. A staircase comprising a pair of slabs arranged along a vertical direction and a step plate attached between the slabs, wherein the slabs are respectively connected to a pair of inner and outer sasa plates. It consists of a pair of upper and lower frames interposed between the Sarasa plate, each Sarasa plate is divided into a plurality of pieces in the vertical direction, and bolts projecting from the outer Sarasa plate are inserted into the frame and the inner Sara plate. A staircase that is fastened and fixed to each other. 2. A staircase according to claim 1, wherein the frame is made of an angle material.