JPH01192949A - Steel framed staircase - Google Patents

Abstract

PURPOSE:To simplify forming work by inserting a fast piece mounted on a side girder in advance into a space provided in the reentering angle section of a step board panel and placing it between side girders. CONSTITUTION:A staircase A is such that a step board 1a and a riser board 1b of an upper stair form an L-shape and that a step board panel 1 constituted by forming a triangular prism-like space in the reentering angle section in the direction of the tread of the step board 1a is used. The tip of the step board 1a is brought into contact with the midway section of the back of a riser board 1b of a lower stair and it placed, and at the same time, a fast piece 2 to be joined through a bolt 7 is inserted into a nut 6 fixed to the inside of a side girder 3 in advance. Mortar 4 equivalent to the amount of the projected length from the step board 1a of the upper stair of the riser board 1b is placed. Forming work of the staircase A can be thereby simplified, and at the same time, a better appearance can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a steel staircase constructed by pouring mortar onto prefabricated step panels.

[Problem to be solved by the invention]

In order to eliminate the need for special means to ensure the rigidity of the treads, the applicant created a structure in which the tread panel, which is an integrated tread board and a recess board, is supported at a position below the recess board, and when mortar is further poured. A steel-frame staircase with easy surface finishing was proposed in 1982.
It is proposed in No.-138896.

This staircase is made up of an integrated tread panel made by joining the tread to the middle of the lower sill board, and the mounting on the sill board is bolted to the stringer via a piece. Yes, but
The present invention aims to propose a new staircase with improved workability, based on the staircase of this existing application.

[Means to solve the problem]

The stairs in the existing application are assembled by interlocking the treads with the hooks of the upper tier side, and inserting pieces into the space created in that area, and the continuous tread panels are interlocked and arranged. Therefore, precision in construction is required.

In the present invention, a triangular prism-shaped space is formed within a single stepped panel and the construction is simplified by manufacturing the space, and the nuts for joining the pieces are fixed inside the stringers for installation. At the same time, by joining the mounting pieces to this nut, construction efficiency and aesthetics can be improved.

The tiered panel is approximately L from the tiered board and the upper tiered board.
It is made in the shape of a letter, and a triangular prism-shaped space is formed at the inside corner of the step board in the direction of the tread.

This tiered panel is placed by placing the base end of the tiered plate in contact with the midway point on the back of the recessed plate of the lower tiered tiered panel, and inserting a mounting piece into the space in the corner. The stairs are constructed by bolting the tier panels to the stringers, and pouring mortar onto the tiers by the length of the protrusion of the treads from the tiers.

〔Example〕

The present invention will be explained below based on the drawings showing one embodiment.

The steel-framed staircase A of the present invention has a one-step tread panel 1 consisting of a tread 1a and an upper recess plate 1b, and is attached to the lower part of the recess plate 1b through pieces 2, 2. bolted to the side girders 3 and 3, and placed mortar 4 on step 1Iila.
It is constructed by pouring.

As shown in FIG.
A triangular prism-shaped space is formed at the corner between the tiers b and L-shape, and a protruding piece 1c is formed at the base end of the tier plate 1a for abutting against the recess Filb of the lower tier panel 1. has been done.

The triangular prism-shaped space is formed, for example, by bending a single plate into a deformed shape as shown in FIG. 1, and then covering the recess with a cover plate 5.

FIGS. 2-I and 2 are modified examples of FIG. 1, and in both cases, the contact points between the cover plate 5, the stepped plate 1a, and the recessed plate 1b are welded.

Figure 2-■ shows an example in which a space is formed by combining a recess plate 1b bent in a 0-shape and a flat step plate 1a, and in this case as well, the contact points between the two are welded. Ru.

As shown in FIG. 3, a nut 6 is fixed to the side plate 3 to which the stepped panel l is attached by welding on the inside, and the piece 2 is fitted in a shape that fits into the triangular prism-shaped space of the stepped panel l. It is joined to the nut 6.

This installation involves inserting the piece 6 into the space, and
As shown in Fig. 1, the protruding piece lc of the tier plate la is brought into contact with the middle part of the back side of the recessed plate 1b of the lower tier plate panel 1, and the tier panel l is placed, and the bolt 7 is tightened as shown in Fig. 3. After tightening, the step panel l is attached to the stringers 3,3.

Further, mortar 4 is placed on the step plate 1a of the step plate panel 1 by the length of the protrusion of the recess plate 1b, thereby constructing the steel staircase A.

Plastic tiles 8 are placed on the mortar 4 as needed.
Non-slip 9 is installed on each nosing.

〔Effect of the invention〕

This invention is as described above, and since the tiered panels can be installed in the space by simply inserting the pieces that have been pre-attached to the stringers, construction can be greatly simplified and construction efficiency can be improved. .

In addition, since the nuts that screw onto the bolts are fixed inside the stringer, there is no need to perform surface treatment on the stringer, and since the bolts are completely hidden inside the stringer, the appearance can be finished well. can.

[Brief explanation of the drawing]

FIG. 1 is a sectional view in the longitudinal direction of the stepped plate showing an embodiment of the present invention;
FIG. 2-1-Ill is a cross-sectional view showing another embodiment of the inside corner portion, and FIG. 3 is a partial cross-sectional view in the tread direction showing the stepped panel mounting portion. A... Steel staircase, 1... Step panel, 1?・・・・・・Step board, 1b・・・Kekomi board,
1c... Protrusion piece, 2... Installation is a piece,
3... stringer, 4... mortar, 5...
...Cover plate, 6...Nutto, 7.
...Bolt, 8...Plastic tile, 9...Non-slip.

Claims (1)

[Claims] (1) A tread panel made into an approximate L-shape from the tread and the upper tier board by forming a triangular prism-shaped space at the inside corner of the tread in the tread direction. The base end is placed in contact with the middle of the back of the stepped plate, and a mounting piece shaped to fit into the triangular prism-shaped space is connected to a nut fixed in advance inside the side girder and attached to the corner of the stepped plate. Insert it into the space of
A steel-framed staircase is constructed by bolting the tier panel to the stringer via this attachment piece, and pouring mortar the length of the protrusion of the tread from the tier.