JPH05263533A - Safety net joining strut and mounting construction thereof - Google Patents

Abstract

PURPOSE:To provide a safety net joining strut for securing a scaffold of steel framed beams, which can be fixed to a steel column in advance before the steel column is erected and which can be carried easily. CONSTITUTION:Arms 12 joining safety nets 11 are formed in an L-shape by bending a flat plate at a right angle, and slots 18 and 19 bent and continued from a shorter piece side to a longer piece side are made. The slots 18 and 19 are fitted to a bolt 15 projected from a column capital 14, and it is mounted to a strut 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pillar for mounting a safety rope at a steel frame construction site and its mounting structure.

[0002]

2. Description of the Related Art Conventionally, a steel frame column 2 for connecting a safety rope 11
As shown in FIG. 6 and FIG. 7, an arm 31 having a hole 30 for connecting the safety rope 11 is welded to its capital 29, and a block 32 having a U-shaped cross section is welded to the lower end of the column 28. The U-shaped groove of the block 32 is fitted into the flange 34 of the steel beam 33 of the steel structure, and the bolt 36 is screwed into the hole formed in the lower member 35 of the U-shaped groove to form the flange 34. Attached to the upper surface of the U-shaped groove by tightening the flange 34 between the member 37 and the bolt 36, and the safety rope 38 is connected to the hole 30 of the arm 31 of the column 28 so installed. Has been stretched over.

[0003]

According to the conventional method, the axis of the column 28 and the beam core XX of the steel beam 33 are the beam core XX.
Since the safety rope 38 is separated by an amount corresponding to the protrusion width W of the flange 34 that protrudes from the ground (FIG. 7), and the safety rope 38 is stretched so as to connect the shaft centers of the columns 28, the steel beam 33 is scaffolded. When walking on it, the safety rope 38 tends to push back the center of gravity of the body in a direction away from the beam core XX, and there is a risk that the foot may accidentally come off the steel beam 33 during walking.

When an external force acts on the column 28 attached in this way, a rotational moment due to the external force is generated around the flange 34, so that the flange 34 is easily deformed.

Further, in the steel beam 33 to which the support column 28 is attached in advance before the construction of the steel frame structure, the balance of gravity of the steel beam 33 with the beam core X-X as a boundary at the time of construction is lost. It becomes difficult to install the flange 34 horizontally.

[0006]

The safety rope connecting column 13 according to the present invention comprises (a) an arm 12 for connecting the safety rope 11.
In the safety rope connecting strut 13 provided on the stigma,
The bolt 15 is protruding from the direction of the pillar,
(B) The arm 12 is an L-shaped member formed by bending a flat plate at a right angle.
It has a shape, and its bent side 16 is the pillar 13.
The short piece is about the thickness of the other, and the other 17 is the short piece 1.
It is a long piece at least twice as long as 6
(C) The short piece 16 and the long piece 17 are formed with long holes 18 and 19 penetrating from the front surface to the back surface, and (d) these long holes 18 and 19 pass through the bent corner portion 20 to make the short piece. A groove hole is formed by bending from the side 16 to the long piece side 17, and (e) the arm 12 is attached to the pillar 13 by the nut 21 screwed to the bolt 15 of the pillar inserted into the long piece 18 or 19. (F) Long piece 1
7. An engaging portion 23 required for connecting the safety rope 11 such as a hole or a hook is formed at a tip 22 of the wire 7, and (g) a steel beam of an assembled steel frame structure. Two
4, the pillars 13 are vertically set on the upper surfaces of the steel pillars 25 and the iron pillars 25, and fixed by bolts 26. (h) The long piece 17 of the arm 12
The end 22 of the long piece is horizontally projected to the outside of the beam core X-X (Y-Y) of the steel beam 24 of the steel frame structure, and the support 13
(I) The safety rope 11 is attached to the tip 22 of the long piece 17 of the arm and attached to the steel structure.

In this way, the steel beam 24 and the steel column 2 of the steel structure are
Since it is fixed to the upper surface of 5 or the like by the bolts 26, a pedestal 39 having holes for fitting the bolts 26 may be welded to the lower ends of the columns 13 (FIG. 2).

[0008]

According to the safety rope connection strut 13 of the present invention,
A beam core XX (Y-
Y) is connected to the long piece 17 of the arm 12 which is horizontally projected to the outside and fixed to the column 13 and the safety rope 11 is connected to the long piece 17.
And long holes 18 and 19 formed in the long piece 17 pass through the bent corner portion 20 and are bent to form a slot hole continuing from the short piece side 16 to the long piece side 17, and the arm 12 bends the flat plate at a right angle. The length of the short piece 16 that is bent in a substantially right angle is approximately the thickness of the support column 13.

(1) Therefore, in the safety rope connection support column 13 according to the present invention, the nut 21 is loosened, the long piece 17 is pushed down in the length direction of the support column 13, the short piece 16 is placed on the stigma 14, and the nut 21 is tightened. As a result, the arm 12 can be fixed so that the long piece 17 does not stick out from the column 13, so that the long piece 17 does not stick out and hinder the transportation (FIGS. 3 and 4).

(2) Then, if the nut 21 is sufficiently loosened, the long piece 17 is pushed up, the short piece 16 is tilted in the length direction of the column 13 (FIG. 5), and the tip 22 of the long piece 17 is projected to protrude the column. It can be fixed to 13 (Figs. 1 and 2), and thus the arm 12 and the column 13 are integrated,
It is possible to save the trouble of searching for the arm 12 and the nut 21 when attaching the support column 13 to the steel structure.

(3) Then, the long piece 17 of the arm 12
The end 22 of the long piece is horizontally projected to the outside of the beam core X-X (Y-Y) of the steel beam 24 of the steel frame structure, and the support 13
When fixed to the safety rope 11, the safety rope 11 is projected to the outside of the beam core XX by the length L of the long piece 17 (FIG. 2). 11 does not push back the center of gravity of the body in the direction away from the beam core XX, and can walk safely with the steel beam 24 as a scaffold.

(4) Further, even if the support column 13 is attached to the stigma of the steel column 25 in advance before the steel structure is built, the steel column 2
5 does not have to be increased in length by the length of the support column 13, and the rotation moment acting around the axis of the iron column 25 does not increase by the weight of the support column 13. Therefore, after mounting the support column 13, Even if the iron pillar 25 is installed, the balance of the iron pillar 25 is not lost, and the iron pillar 25 can be safely installed while the pillar 13 is attached.

(5) And, in this way, the iron pillar 25 is previously prepared.
Since the stanchion 13 can be attached to the stigma,
It avoids the risk of climbing and attaching to the built steel structure.

Therefore, the present invention is preferably carried out by fixing the column 13 to the stigma 27 of the iron column 25 of the steel frame structure.

As described above, the strut 13 according to the present invention is safe when walking with the steel beam 24 as a scaffold, and even if the strut 13 is attached to the stigma 27 of the iron pillar 25 in advance, the iron pillar 25 is safe. The present invention is convenient in that it can be built, the arm 12 for connecting the safety rope 11 does not hinder the transportation, and the arm 12 and the nut 21 are integrated with the column 13 for easy handling. Is.

[Brief description of drawings]

FIG. 1 is a perspective view of a safety rope connection strut according to the present invention attached to a steel structure.

FIG. 2 is a perspective view of a safety rope connection strut according to the present invention attached to an iron column of a steel frame structure.

FIG. 3 is an exploded perspective view of a safety rope connection strut according to the present invention.

FIG. 4 is a perspective view of a safety rope connection strut according to the present invention.

FIG. 5 is a perspective view of a safety rope connection strut according to the present invention.

FIG. 6 is a perspective view of a conventional safety rope connection strut attached to a steel structure.

FIG. 7 is a perspective view of a conventional safety rope connection strut attached to a steel beam of a steel structure.

[Explanation of symbols]

 11 Safety rope 12 Arm 13 Strut 14 Stigma 15 Bolt 16 Short piece 17 Long piece 18 Long hole 19 Long hole 20 Corner 21 Nut 22 Tip 23 Engagement 24 Steel beam 25 Steel pillar 26 Bolt 27 Stigma 28 Strut 29 Stigma 30 Hole 31 Arm 32 block 33 steel beam 34 flange 35 member 36 bolt 37 member 38 safety rope 39 pedestal

Claims (3)

[Claims] 1. (a) An arm 12 for connecting a safety rope 11.
In the safety rope connecting strut 13 provided on the stigma,
The bolt 15 is protruding from the direction of the pillar,
(B) The arm 12 is an L-shaped member formed by bending a flat plate at a right angle.
It has a shape, and its bent side 16 is the pillar 13.
The short piece is about the thickness of the other, and the other 17 is the short piece 1.
It is a long piece at least twice as long as 6
(C) The short piece 16 and the long piece 17 are formed with long holes 18 and 19 penetrating from the front surface to the back surface, and (d) these long holes 18 and 19 pass through the bent corner portion 20 to make the short piece. A groove hole is formed by bending from the side 16 to the long piece side 17, and (e) the arm 12 is attached to the pillar 13 by the nut 21 screwed to the bolt 15 of the pillar inserted into the long piece 18 or 19. (F) Long piece 1
7. A safety rope connecting strut, characterized in that an engaging portion 23 required for connecting the safety rope 11 such as a hole or a hook is formed at the tip 22 of 7. 2. An arm 12 for connecting a safety rope 11.
In the safety rope connecting strut 13 provided on the stigma,
The bolt 15 is protruding from the direction of the pillar,
(B) The arm 12 is an L-shaped member formed by bending a flat plate at a right angle.
It has a shape, and its bent side 16 is the pillar 13.
The short piece is about the thickness of the other, and the other 17 is the short piece 1.
It is a long piece at least twice as long as 6
(C) The short piece 16 and the long piece 17 are formed with long holes 18 and 19 penetrating from the front surface to the back surface, and (d) these long holes 18 and 19 pass through the bent corner portion 20 to make the short piece. The slot 16 is formed by bending from the side 16 to the side 17 of the long piece, and (e) the tip 22 of the long piece 17 is provided with an engaging portion 23 required for connecting the safety rope 11 such as a hole or a hook. (G) The column 13 is vertically erected on the upper surface of the steel beam 24, the iron column 25, etc. of the assembled steel frame structure, and is fixed by the bolt 26, (h)
The long piece 17 of the arm 12 horizontally projects the tip 22 of the long piece to the outside of the beam core X-X (Y-Y) of the steel beam 24 of the steel structure, and the bolt 15 of the column is extended to the length of the long piece 17. It is fitted into the hole 19 and is fixed to the column 13 by a nut 21 screwed to the bolt 15 of the column, (i) The safety rope 11 is connected to the tip 22 of the long piece 17 of the arm,
Safety rope connection prop mounting structure characterized by. 3. The safety rope connecting strut mounting structure according to claim 2, wherein the strut 13 according to claim 2 is fixed to a stigma 27 of an iron column 25 of a steel frame structure.