JP3156705U - H steel arm scaffolding frame - Google Patents

Abstract

[PROBLEMS] To provide a temporary scaffolding that can cope with various cover widths, secures structural safety, has good workability, shortens one-side alternate traffic regulation period, and has high safety for assembly workers. Provide H steel arm scaffolding frame. The present invention forms an H-steel arm scaffolding frame 1 assembled by an H-steel arm main body 2, an angle bracket 3 and a clamping member 5, and the H-steel arm scaffolding frame 1 makes a bridge or an elevated road concrete. A ground pipe 4 is fastened and fixed by a push bolt 6 between the angle bracket 3 and the clamping member 5, and a single pipe is suspended on each H steel arm scaffold frame 1 arranged at equal intervals on the concrete ground cover 4. The entire H steel arm scaffolding frame is formed by fixing the frames 7 in two rows and connecting the suspension frames 7 with the connection pipe frame 8 along the bridge or elevated road direction. [Selection] Figure 1

Description

  The present invention relates to an H-steel arm scaffolding frame for attaching work pieces such as electric pipes and water pipes to bridge girder side surfaces or floor slab lower surfaces in bridges and elevated roads and as a temporary scaffold for painting.

Conventionally, to mount a work such as a conduit or water pipe on the side of a bridge girder or the bottom of a floor slab, a temporary scaffold was assembled by suspending a scaffolding chain from a railing column.
The scaffold chain has a fundamental defect that it cannot respond to the wind load blown from below because it does not correspond to the compressive force only by the tensile force.
In the case of a PC concrete girder, anchor bolts cannot be driven in, so a temporary scaffold with a very unstable structure is obtained.
In addition, long-term alternating traffic regulation is necessary because materials are deposited in a narrow space on the bridge.

Accordingly, the applicant of the present invention has described an H steel arm scaffolding frame and its construction method in which a concrete ground cover is sandwiched and an H steel arm main body is extended to the outside of a bridge, and a suspension pipe of a single pipe is suspended therefrom to form a scaffold. Developed (see Patent Document 1).
This known technology includes an H steel arm main body, a jack mounting member welded at a right angle to one end of the H steel arm main body, and an H steel with a slightly wider interval from the jack mounting member end than the concrete ground cover. An H steel arm scaffolding frame comprising a holding member vertically welded to the lower part of the arm main body, assembled in an F shape by the H steel arm main body, the jack mounting member, and the holding member, and a construction method thereof.

JP 2001-049623 A

  The present invention improves the above-mentioned H steel arm scaffolding frame, supports various ground cover widths, can ensure structural safety, has good workability, shortens the one-way alternating traffic regulation period, and allows assembly workers It aims at providing the H steel arm scaffold frame which is a temporary scaffold with high safety.

The H-steel arm scaffolding frame of the present invention includes an H-steel arm main body, an angle bracket fixed to one end of the H-steel arm main body so as to be mounted and movable, and a space slightly wider than the concrete ground cover from the angle bracket end. And a sandwiching member welded perpendicularly to the lower part of the H steel arm main body, and assembled by the H steel arm main body, the angle bracket and the sandwiching member.
The angle bracket has an L-shaped cross section, the L-shape is reversed and the back surface is fixed to the end surface of the H steel arm main body, and the vertical portion is arranged at right angles to the H steel arm main body. It is.
A push bolt that abuts against the concrete ground cover is attached to the vertical portion of the angle bracket, and the push bolt is moved back and forth by turning the push bolt of the angle bracket.
The angle bracket is provided with a plurality of sets of mounting holes in the lower plate of the H steel arm main body, and the angle bracket is fixed and movably fixed by fixing bolts by changing the position of the mounting holes according to the concrete ground cover. To do.

In this way, the H steel arm scaffolding frame of the present invention sandwiches the concrete ground cover part and projects the H steel arm main body to the outside of the bridge, from which the suspension pipe of the single pipe is suspended to form the scaffold. Corresponding to various ground cover widths, sufficient structural strength can be secured.
In addition, by creating a material storage area and a temporary passage on the H steel arm body outside the road, it is possible to secure scaffolding from the H steel arm body, thus ensuring the safety of workers and shortening the one-way alternating traffic regulation period. Can do.

It is a perspective view of the whole H steel arm scaffolding frame of this invention. It is a front view of the H steel arm scaffold frame of this invention. It is an AA arrow enlarged plan view of FIG.

Hereinafter, an embodiment of the H steel arm scaffolding frame of the present invention will be described with reference to the accompanying drawings.
As shown in FIG. 1, an H steel arm scaffolding frame 1 of the present invention includes an H steel arm main body 2, an angle bracket 3 fixed to one end of the H steel arm main body 2 so as to be mounted and movable, and the angle bracket. It comprises a clamping member 5 welded perpendicularly to the lower part of the H steel arm main body 2 at a distance slightly wider than the concrete ground cover 4 from the three ends.

  As shown in FIG. 1, an H steel arm scaffolding frame 1 assembled by the H steel arm main body 2, the angle bracket 3 and the clamping member 5 is formed, and the H steel arm scaffolding frame 1 forms a bridge or an elevated road. A concrete ground cover 4 is fastened and fixed with a push bolt 6 between the angle bracket 3 and the clamping member 5, and a single pipe pipe is attached to each H steel arm scaffold frame 1 arranged at equal intervals on the concrete ground cover 4. The entire H steel arm scaffolding is formed by fixing the suspension frames 7 in two rows and connecting the suspension frames 7 along the direction of the bridge or the elevated road by the connection pipe frame 8.

  As shown in FIG. 2, the H steel arm main body 2 has an upper board 9 and a lower board 10 which are parallel to each other, and has a vertical × horizontal × length = 100 × 100 × 1730 mm, and connects the center of both board surfaces. It is H-shaped connected by a board 11, and the angle bracket 3 is fixed to the bridge side of the H steel arm main body 2 by mounting holes and mounting bolts 12 so as to be mounted and movable.

The angle bracket 3 is 100 × 100 × 100 in length, width, and length and has an L-shaped cross-section. The L-shape is reversed and the back surface of the angle bracket 3 is attached to the H steel arm body 2. It is fixed to the lower board 10 and the vertical part of the angle bracket 3 is arranged at right angles to the H steel arm main body 2.
Two vertical push bolts 6 that contact the concrete cover 4 are attached in parallel to the vertical portion of the angle bracket 3, and the push bolt 6 is turned by turning the push bolt 6 of the angle bracket 3. It can be moved back and forth.
As shown in FIG. 3, the angle bracket 3 is provided with a plurality of sets of mounting holes 12 in the lower plate 10 of the H steel arm main body 2, and the positions of the mounting holes 12 according to the concrete ground covering 4. Instead, the angle bracket 3 is fixed by the mounting hole and the mounting bolt 12 so as to be movable.

The holding member 5 has an H-shaped cross-section similar to the H steel arm main body 2 and has a length × width × length = 100 × 100 × 300 mm. The H-shaped end surface portion of the holding member 5 is welded and arranged at right angles to the H steel arm main body 2.
The interval between the angle bracket 3 and the clamping member 5 is set to 630 mm longer than the width 430 mm of the concrete ground covering portion 4 so that the push bolt 6 does not get in the way.

Further, on the opposite side of the H steel arm main body 2 from the angle bracket 3, as shown in FIG. 1, two rows of suspension frames 7 made of single pipe pipes vertically descending from the H steel arm main body 2 are provided. The clamp 13 is fixed to the upper plate 9 of the H steel arm body 2.
The H steel clamp 13 of the suspension frame 7 may be provided on the lower plate 10 of the H steel arm main body 2 if necessary to support single pipes at two locations.
The space between the suspension frame 7 and the suspension frame 7 is provided with such a width that three work scaffold plates 14 can be placed. In this embodiment, each suspension frame 7 is suspended downward as a work scaffold. It can also be provided, or each suspension frame 7 can be erected above the H steel arm main body 2 and used as a work passage or a material storage.

The angle bracket 3 and the clamping member 5 of the H steel arm scaffolding frame 1 are fitted to the concrete ground cover 4 and the two push bolts 6 are pressed against the side wall of the concrete ground cover 4.
By this pressing, both side walls of the concrete ground covering portion 4 are sandwiched between the push bolt 6 and the sandwiching member 5 of the H steel arm scaffold frame 1, and the H steel arm scaffold frame 1 is attached to the concrete ground covering portion 4. Fixed.
When the fixing of the H-steel arm scaffolding frame 1 is finished, two rows of suspension frames 7 for supporting the work scaffold plate 14 on the H-steel arm body 2 on the side protruding from the bridge or highway are provided with the H-steel. Fix with clamp 13.
Next, the lower ends of the single pipes of the suspension frame 7 are connected to each other by a single pipe through a connection clamp 15 to form a lower end pipe frame 16 on which the work scaffold plate 14 is placed.
The H steel arm scaffolding frame 1 installed at equal intervals along the bridge or elevated road is provided with working scaffold plates 14 between the lower end pipe frames 16 and suspended in two rows arranged at equal intervals. A connection pipe frame 8 of a single pipe that connects the frames 7 is fixed to the suspension frame 7 with a connection clamp 15, and the entire outer surfaces of the connection pipe frame 8 and the lower end pipe frame 16 are covered with a safety net (not shown).

Next, the mounting method of the H steel arm scaffolding frame 1 of the present invention will be described below based on the drawings.
A large number of H steel arm scaffolding frames 1 assembled in advance by the H steel arm main body 2, the angle bracket 3 and the clamping member 5 are prepared at the factory, and are arranged at equal intervals along the concrete cover part 4 of the bridge or highway. Put.
Next, the angle bracket 3 and the clamping member 5 of the H steel arm scaffold frame 1 are fitted to the concrete ground cover 4 and the push bolt 6 is turned to press against the side wall of the concrete ground cover 4.
By this pressing, both side walls of the concrete ground covering portion 4 are sandwiched between the push bolt 6 and the sandwiching member 5 of the H steel arm scaffold frame 1, and the H steel arm scaffold frame 1 is attached to the concrete ground covering portion 4. Fixed.
By repeating this operation for all the H steel arm scaffolding frames 1 arranged on the concrete ground covering 4 of the bridge or highway shown in FIG. The cover 4 can be fixed.

When the fixing of the H-steel arm scaffolding frame 1 is finished, two rows of suspension frames 7 for supporting the work scaffold plate 14 on the H-steel arm body 2 on the side protruding from the bridge or highway are provided with the H-steel. Fix with clamp 13.
The H steel clamp 13 is a ring-shaped clamping fastener that fits a screw fastening portion that clamps and fixes the upper plate 9 or the lower plate 10 of the H steel arm body from above and below, and a single pipe pipe of the suspension frame 7. The H steel arm main body 2 and the suspension frame 7 can be attached and fixed so as to be orthogonal to each other.
Note that the H steel clamp 13 may support a single pipe pipe at two locations of the upper and lower plates 9 and 10 of the H arm body 2 if necessary.

And the lower end of the single pipe of the suspension frame 7 is connected with a single pipe through a connection clamp 15 to form a lower pipe frame 16 on which the work scaffold plate 14 is placed.
It is also possible to extend the lower end pipe frame 16 to below the concrete ground covering portion 4 and to support the work scaffold plate 14 by supporting it with a single pipe pipe disposed obliquely.
By performing this operation on all the H-steel arm scaffold frames 1 arranged on the concrete ground cover 4 of the bridge or the highway, the lower end pipe frames 16 of the single pipes are provided at equal intervals on the H-steel arm main body 2. I can do it.

The H steel arm scaffolding frame 1 installed at equal intervals along the bridge or elevated road is provided with working scaffold plates 14 between the lower end pipe frames 16 and suspended in two rows arranged at equal intervals. A connection pipe frame 8 of a single pipe that connects the frames 7 is fixed to the suspension frame 7 with a connection clamp 15, and the entire outer surfaces of the connection pipe frame 8 and the lower end pipe frame 16 are covered with a safety net (not shown).
The connection pipe frame 8 is provided in a plurality of stages in consideration of safety.

Next, the case where the suspension frame 7 is provided so as to be orthogonal to the upper side of the H steel arm main body 2 will be described.
The suspension frame 7 is attached to the H-steel arm body 2 by fixing the suspension frame 7 and the H-steel arm body 2 with an H-steel clamp 13 and at the top plate 9 of the H-steel arm body 2 with a working scaffold plate. 14 is mounted and fixed to be a work passage or material storage.
Adjacent suspension frames 7 are connected by a connection pipe frame 8 to ensure safety.

DESCRIPTION OF SYMBOLS 1 H steel arm scaffolding frame 2 H steel arm main body 3 Angle bracket 4 Concrete ground cover part 5 Holding member 6 Push bolt 7 Hanging frame 8 Connection pipe frame 9 Upper board 10 Lower board 11 Connecting plate 12 Mounting hole and mounting bolt 13 H Steel clamp 14 Work scaffolding plate 15 Connection clamp 16 Lower end pipe frame

Claims (4)

  H steel arm main body, an angle bracket fixed to one end of the H steel arm main body so as to be mounted and moved at right angles, and a lower portion of the H steel arm main body spaced a little wider than the concrete ground cover from the angle bracket end An H-steel arm scaffolding frame comprising a holding member welded perpendicularly to the H-steel arm body, an angle bracket and a holding member.   The angle bracket has an L-shaped cross section, the L-shape is reversed and the back surface is fixed to the end surface portion of the H steel arm main body, and the vertical portion is disposed at right angles to the H steel arm main body. The H steel arm scaffolding frame according to claim 1.   3. The vertical portion of the angle bracket is attached with a push bolt that abuts against a concrete ground cover, and the push bolt is moved back and forth by turning the push bolt of the angle bracket. H steel arm scaffolding frame.   The angle bracket is provided with a plurality of sets of mounting holes in the lower plate of the H steel arm main body, and the angle bracket is fixed and movably fixed by fixing bolts by changing the position of the mounting holes according to the concrete ground cover. The H-steel arm scaffolding frame according to claim 1 or 2, wherein:

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