JPH0518075A - Steel step unit for indoor - Google Patents

Abstract

PURPOSE:To eliminate the needs for correction as well as perform combining operation safely and easily at high positions by using setting landings and using angles. CONSTITUTION:A landing 4 is set connectedly to the upper end of a stair 1, and a landing 5 is also provided on the side of the landing 4 connectedly to the lower end of the next upper step. Receiving angles 6 are fixed to the connected portion of the next upper step of the landing 5, and at least two projected bolts 7 and gusset plate 8 for beams on both sides are provided for the angle 6. A set angle 9 is fixed to the lower end or steps and at least two bolt holes 10 are formed in the angle 9. These are combined into one unit.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel stair unit used for internal stairs of a high-rise building.

[0002]

2. Description of the Related Art Conventionally, indoor stairs have been generally used in which landings connected to the stairs are arranged at the upper and lower ends of the stairs to form a unit.

[0003]

By the way, in the above unit stairs, when the upper landing of the unit stairs and the lower landing of the next upper stairs are connected, the work space is small and it is not easy to perform the work. It was dangerous especially in the high-rise position. In addition, since each landing is not kept horizontal due to its own weight or a load, both connected landings cannot maintain a horizontal state with each other, so that the correction work is troublesome.

The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to provide a landing in parallel and to use an angle so as to ensure safety even in a high-rise position. It is an object of the present invention to provide an indoor steel stair unit that can be easily assembled and requires no correction.

[0005]

In order to achieve the above object, an indoor steel staircase unit according to the present invention has a landing connected to the stairs at the upper end of the stairs and a second upper layer on the side of the landing. A landing to which the lower end of the stairs is connected is installed side by side, and a receiving angle is fixed to the connection part of the next upper stairs of the installed landing, and at least two or more projecting bolts and sasara girders on both sides are attached to the receiving angle. Gusset plate is arranged, a set angle is fixed to the lower end of the stairs, at least two or more bolt receiving holes are formed in the set angle, and these are configured as one unit. .

[0006]

Operation: When assembling the next upper staircase unit to one indoor steel staircase unit, the projecting bolts provided on the receiving angle and the projecting bolts provided on the set upper angle of the next upper staircase unit are used as the workplaces with the two landings in parallel. The gusset plate provided through the receiving hole and provided on the receiving angle may be connected to the sasara girder of the next upper staircase unit.

At this time, since both landings are already fixed to the upper end of the stairs of the indoor steel staircase unit, the parallelism between the two landings is not broken.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIG. In the figure, 1 is a steel staircase in which a tread plate 3 is fixed to a sasara girder 2, a landing 4 is continuously attached to the upper end of the stairway 1, and a landing 5 is parallel to the side of the landing 4. Is stuck to.

A receiving angle 6 is fixed to a connecting portion of the next upper staircase of the landing 5, and the receiving angle 6
Two projecting bolts 7 are erected on the shaft, and gusset plates 8 for the girder are fixed on both sides.

Also, a set angle 9 is provided at the lower end of the stairs 1.
Are fixed, and two bolt receiving holes 10 are formed in the set angle 9 at equal intervals with the projecting bolt 7.

And, these stairs 1, both landings 4, 5,
The receiving angle 6 and the set angle 9 are integrated as a whole to form a unit.

Therefore, in the case of manufacturing a staircase over multiple layers, in order to assemble the next upper staircase unit to one indoor steel staircase unit, the two landings 4 and 5 arranged side by side are used as working spaces and the receiving angle 6 is set. The projecting bolt 7 provided on the upper staircase unit may be passed through a bolt receiving hole provided on the set angle of the next upper staircase unit, and the gusset plate 8 provided on the receiving angle may be connected to the sasara girder of the next higher staircase unit.

[0013]

INDUSTRIAL APPLICABILITY In the indoor steel staircase unit according to the present invention, a landing connected to the staircase is arranged at the upper end of the staircase, and a landing to which the lower end of the next upper staircase is connected is provided side by side with the landing. Then, a receiving angle is fixed to the connection part of the next upper stairs of the landing arranged side by side, and at least two or more projecting bolts and gusset plates for sasara girders are arranged on both sides of the receiving angle. A set angle is fixed to the set angle, and at least two or more bolt receiving holes are formed in the set angle, and these are configured as one unit. Therefore, when assembling the next upper stair unit to one indoor steel stair unit Can use both landings in parallel as a work place and can safely assemble work even in high-rise positions.

Also, assembling the projecting bolt provided on the receiving angle through the bolt receiving hole provided on the set angle of the next upper stair unit, and the gusset plate provided on the receiving angle and the sasara girder of the next upper stair unit. It is extremely simple and easy because you can connect to.

Moreover, since the two landings are already fixed to the upper end of the stairs of the indoor steel staircase unit, the parallelism between the two landings does not collapse, so that the positions of both landings need not be corrected. is there.

[Brief description of drawings]

FIG. 1 is a plan view of an indoor steel staircase unit according to the present invention.

[Explanation of symbols]

 1 Stairs 4, 5 Landing 6 Receiving angle 7 Protruding bolt 8 Gusset plate 9 Set angle 10 Bolt receiving hole

Claims (1)

Claims: 1. A landing connected to the stairs is arranged at an upper end of the stairs, and a landing to which a lower end of the next upper stairs is connected is arranged side by side on the landing, and the landings are arranged side by side. The receiving angle is fixed to the connection part of the next upper stairs of the landing, at least two projecting bolts and gusset plates for sasara girders are arranged on both sides of the receiving angle, and the setting angle is fixed to the lower end of the stairs. An indoor steel staircase unit, characterized in that at least two or more bolt receiving holes are formed in the set angle and these are formed as one unit.