JPH06146519A - Staircase unit - Google Patents

Abstract

PURPOSE:To curtail welding work, to make it possible to increase the degree of accuracy of mounting and quality and at the same time, to easily handle a load and to increase productivity. CONSTITUTION:A staircase unit is constituted of tread/riser units 4 connecting a plurality of treadboards 2 to risers 3 together as a unit in advance, a pair of cut strings 5 and 5 and coupling metal fixtures 9 mounting vertical pieces 7 bent at right angles to mounting pieces 6 receiving the treadboards 2. The treadboards 2 are fixed the mounting pieces 6 of the coupling metal fixtures with bolts, at the same time, the vertical pieces 7 of the coupling metal fixtures are fixed to the cut strings 5 with bolts, and a plurality of tread/riser units 4... are subsequently connected up and down.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a step plate / indentation plate unit in which a plurality of steps and indentation plates are integrally connected in advance, which are sequentially connected up and down with bolts between sasara girders. The present invention relates to a staircase unit that can improve the assembly accuracy of stairs, facilitate the handling of loads during transportation, and increase the productivity.

[0002]

2. Description of the Related Art Conventionally, a steel stair base frame has been formed in a factory by welding one step plate and one scoop plate to a sasara girder.

[0003]

However, in such a conventional one, since one step plate and one scoop plate are welded to the smooth girder, a great deal of labor is required for the work.
In addition to being inferior in work efficiency, since there are many welding points, the stair base frame is likely to be distorted, which causes a decrease in assembly accuracy.

Further, the size of the stairs base frame becomes large, which makes it difficult to handle loads during transportation and the like, resulting in poor productivity.

According to the present invention, a plurality of step plates / indentation plate units in which a plurality of step plates and indentation plates are integrally connected in advance are used as a mounting piece of a connecting metal member in which a vertical piece is bolted to a sasara girder. The purpose of the present invention is to provide a staircase unit that can eliminate welding distortion and improve assembly accuracy while eliminating welding work based on the fact that the step plates are connected sequentially in the vertical direction by bolting. I am trying.

[0006]

In order to achieve the above-mentioned object, a staircase unit of the present invention has a plurality of step plates and indented plates integrally connected in advance and has holes for attachment at both side ends of the step plate. A plurality of stepped plate / indented plate units provided, a pair of sasara girders, and a vertical piece that bends at a right angle to the mounting piece that receives the stepped plate, and a large number of holes are formed in the mounting piece and the vertical piece. A plurality of step plate / indented plate units consisting of individual connecting brackets are fixed to the mounting pieces of the connecting brackets with bolts that pass through the holes, and vertical pieces of the connecting brackets are attached to the holes. It is fixed to the Sasara girder by passing bolts, and it is connected to the top and bottom sequentially.

[0007]

Operation: The step plate / indentation plate unit in which a plurality of steps and indentation plates are previously integrally combined is sequentially connected vertically between the sasara girders using the connecting fittings. Therefore, the assembling work can be made more efficient and the quality can be improved as compared with the conventional one in which the step plate and the shank plate are fixed to the girder.

Further, since the step plate / indentation plate unit is arranged between the sasara girders by bolting the step plate to a mounting piece of a connecting fitting having a vertical piece bolted to the sasara girder, Welding work can be eliminated, work efficiency can be improved, and the assembly accuracy can be improved in combination with the use of the step plate / indentation plate unit, and distortion can be prevented.

Further, the size of each member constituting the staircase unit can be reduced, the handling of the load at the time of manufacture, transportation, etc. can be facilitated and the productivity can be improved.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In the figure, a staircase unit 1 of the present invention includes a plurality of step plates / indentation plate units 4 ... In which a plurality of steps 2 ... ,
Vertical piece 7 that is bent at a right angle to the mounting piece 6 that receives the step plate 2.
A plurality of connecting plates 9 provided with a plurality of step plates / indentation plate units 4, the step plate 2 being bolted to the mounting piece 6 of the connecting parts 9, and the vertical pieces of the connecting parts 9. 7 is bolted to the sasara girder 5, and they are connected to each other in the vertical direction.

As shown in FIG. 2, the sasara girder 5 is made of a steel material having a U-shaped cross section in which flanges 16 and 16 are provided on the upper and lower sides of a vertical standing piece 15, and the pair of sasara girders 5 and 5 are provided with groove portions thereof. In the opposite direction and with a staircase slope,
Connection is made by the step plate / indentation plate unit 4.

As shown in FIG. 2, a vertical plate 17 having proper intervals is provided in the groove surrounded by the standing piece 15 of the sasara girder 5 and the upper and lower flanges 16, 16. , 16 having a protruding portion 17A that extends beyond the projecting end of the plate 17, and the protruding portion 17 of the plate 17 is welded in advance.
A is a main pillar 19 made of a square steel pipe that constitutes the stair handrail A.
The lower part of the is bolted.

The stair handrail A is, as shown in FIG.
The main pillar 19 ..., the main pillar 19 ... Handrail 2 connecting the upper ends
0 and a plurality of vertical handrails 22 connecting the handrail 20 and the lower frame 21 installed between the main pillars 19 and 19 ...
After assembling the staircase unit 1 to the house frame structure,
The main pillar 19 is bolted to the plate 17 so that the main pillar 19 is attached to the sassar girder 5.

As described above, the staircase handrail A can be attached to the sasara girder 5 with a simple structure, which can reduce the number of work steps at the site and increase the strength of the staircase handrail A in the out-of-plane direction.

In the step plate / indentation plate unit 4, a steel base plate 24 having an L-shaped cross section, which is obtained by bending the step plate 2 at a right angle from the lower end of the vertical indentation plate 3, is welded in a stepwise manner up and down. By doing so, for example, a unit body in which the three step plates 2 ... And the shingled plates 3 ... Are integrally joined in advance, and from the lower end of the shank plate 3 arranged at the lowermost part, Small length projecting piece 2 provided with holes 25A, 25A for connecting the shingling plate unit 4
5 is protruding.

In addition, the upper portion of the above-mentioned indentation plate 3 is formed with a protruding portion 26 that protrudes upward from the step plate 2, and a small height rising piece 27 is raised at the rear end of the uppermost step plate 2. There is.

Further, a plurality of step plates 2 of the step plate / indent plate unit 4 ... Holes 10 and 10 are provided at both ends, respectively.
By means of these holes 10, the step plate / indentation plate unit 4 is bolted to the sasara girders 5, 5 via the connecting fitting 9.

The connecting fitting 9 is a horizontal and rectangular mounting piece 6 for receiving the step plate 2 by mounting the step plate 2, and is bent at a right angle from one side edge of the mounting piece 6. It consists of a vertical and rectangular vertical piece 7 that hangs down, and the above-mentioned mounting piece 6
Is aligned with the holes 10, 10, and the holes 11,
11 is formed in the vertical piece 7, and the vertical piece 7 is aligned with the holes 29 provided in the standing piece 15 of the sasara girder 5, and the hole 1 is formed.
2, 12 are provided.

A large number of connecting fittings 9 ... Are provided with the holes 29 provided in the standing pieces 15 and 15 of the pair of salsa girders 5 and 5 facing each other.
, And the holes 12 of the vertical pieces 7 are fixed to the sasa girders 5, 5 in a stepwise manner by bolts.

A connecting metal fitting 2A for receiving the uppermost step plate 2
Has a width in the flow direction of the stairs smaller than the width of the other connecting fittings 2.

The step plate 2 of the step plate / indentation plate unit 4
Is mounted on both sides of the mounting piece 6 of the connecting fitting 9, and the holes 10 ... and the holes 11 of the mounting piece 6 ...
It is fixed to the mounting piece 6 by a bolt passing through and the step board / inclination board unit 4 is bridged between the sasara girders 5, 5.

Further, the lower step plate / indentation plate unit 4 is
Similarly, after being erected between the sasara girders 5 and 5, the holes provided in the uppermost step plate 2 of the step plate / indentation plate unit 4 that passes through the hole parts 25A, 25A of the projecting piece 25 and below this. The upper and lower step plate / indentation plate units 4 are connected using the bolts inserted in the.

As described above, the plurality of step plate / indentation plate units 4 ... Are sequentially combined in the vertical direction to form the staircase unit 1.

Therefore, it is possible to eliminate the work of attaching the step plate 2 and the indentation plate 3 by welding to each other between the girders, prevent the distortion caused by the welding, and improve the attachment accuracy. Further, since the step plate / indentation plate unit 4 is used, it is possible to prevent the staircase unit 1 from being deformed when the bolts are fixed, and it is possible to improve the efficiency of the mounting work and improve the productivity.

After the staircase unit 1 is assembled to an appropriate house frame structure, mesh stirrup bases 31 for placing the mortar M, which cover the step plates 2, ...

The mesh streak base 31 is horizontally arranged on the upper surface of one step plate 2 via leg pieces 32, 32.
And a vertical portion 35 that rises from one side edge of the horizontal portion 34 and that covers the shingled plate 3 that is continuous with the step plate 2. At the upper end of the vertical portion 35, an L-shaped portion that engages with the protruding portion 26 is provided. A locking piece 36 having a shape is provided.

The horizontal portion 34 and the vertical portion 35 are previously welded to each other to form the mesh liner base 31, and
By mounting the mesh-stripe base 31 on the base plate 24 and welding the locking pieces 36 and the leg pieces 32 rising from the base plate 24 to the base plate 24, the base plates 2
Fix to 4 ...

Since the mesh rebar formed of the wire mesh is used as the base for placing the mortar M in this manner, the work is performed as compared with the case where the rebars are welded to the step plates 2 ... Man-hours can be greatly reduced and workability can be improved.

As shown in FIG. 1, the mortar M is filled on the mesh liner bases 31 ... At the final stage of the construction period to finish the staircase unit 1.

[0030]

As described above, in the staircase unit of the present invention, a plurality of step plates / indentation plate units in which a plurality of steps / indentation plates are integrally connected in advance are connected to each other through a connecting metal fitting between the sasara girders. Since it is bolted up and down sequentially, welding work can be eliminated,
It is possible to prevent the stairs from being distorted due to welding, and improve the assembly accuracy and quality.

Since a step plate / indentation plate unit is used,
The deformation at the time of bolting can be prevented, the assembling of the staircase unit can be made efficient, and the productivity can be improved.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view thereof.

[Explanation of symbols]

 2 step plate 3 inset plate 4 step plate / inset plate unit 5 sasara girder 6 mounting piece 7 vertical piece 9 connecting metal fittings 10, 11, 12 holes

Claims (1)

[Claims] 1. A plurality of step plates in which a plurality of step plates and barbed plates are integrally combined in advance and mounting holes are provided at both ends of the step plate.
A bar plate unit, a pair of sasara girders, and a vertical piece that is bent at a right angle to the mounting piece that receives the step plate, and the mounting piece,
It consists of a large number of connecting brackets with holes in the vertical pieces, and a plurality of step plate / indent plate units are fixed to the mounting piece of the connecting bracket by fixing the step plates with bolts passing through the holes. A staircase unit characterized in that vertical pieces of metal fittings are fixed to a sasara girder by bolts that pass through the holes, and they are sequentially joined up and down.