JP2554228Y2 - Embedded metal fittings for lifting lightweight cellular concrete panels - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an embedded metal fitting for lifting lightweight cellular concrete panels.

[0002]

2. Description of the Related Art Lightweight cellular concrete panels having relatively small strength (hereinafter referred to as "concrete panels") have an increased risk of chipping due to their ends hitting other structures during hanging (hanging) using a crane. . For this reason, an embedding metal fitting for lifting is buried in the concrete panel, and it is hung via the embedding metal fitting for lifting, and is transferred in a state at the time of mounting, that is, hanging in the vertical direction. A hexagonal nut is usually used for the mounting bracket for lifting, and the hexagonal nut is directly welded and fixed to a reinforcing member embedded in a concrete panel. Therefore, the external force at the time of lifting is dispersed throughout the concrete panel through the reinforcing members, and the destruction due to the concentrated load is prevented.

[0003]

[Problems to be Solved by the Invention] However, in the conventional mounting bracket for lifting, since the hexagon nut is directly fixed to the reinforcing member by welding, welding distortion or the like is determined by the difference in heat shrinkage between the reinforcing member and the hexagon nut. Poor welding was likely to occur, and there was a risk of defective products. The hexagon nut fixed to the reinforcement is
Since welding is performed on the reinforcing member only at the end face, stress is concentrated on the welded portion, the welded portion is easily deformed, and when an external force is applied during lifting, the welded portion may be broken. Further, it is difficult to weld the hexagon nut to the reinforcing member in the vertical direction, and the workability is not good.

The present invention has been made in view of the above situation, and has no welding distortion or the like, can disperse local stress at the time of hanging, and has good workability in mounting. It is intended to provide a metal fitting.

[0005]

SUMMARY OF THE INVENTION To achieve the above object, the construction of the embedding metal fitting for lifting a lightweight cellular concrete panel according to the present invention is as follows. In the metal fittings, the outer frame of the reinforcing member is formed by a strip arranged in the thickness direction of the lightweight cellular concrete panel in the width direction, and a pair of angle pieces having a thickness similar to that of the strip, and a columnar shape. The nut and the longitudinal direction are arranged in the same direction, and the vertical pieces of the pair of angle pieces are welded and fixed to the opposite outer surfaces of the nut, respectively, and the end face at one longitudinal end of the angle piece integrated with the hexagon nut is It is characterized by being fixed by welding to the strip surface of the outer frame.

[0006]

The angle piece and the strip have substantially the same thickness, and the difference in thermal shrinkage between the angle piece and the strip during welding is reduced, so that welding distortion, poor welding and the like do not occur.
Since the nut is welded to the strip at the end face of the L-shaped angle piece, spot-like local stress is dispersed, and strength against external forces from multiple directions is improved. Since the nut is fixed to the band plate via the angle piece, vertical mounting accuracy to the band plate can be easily obtained, and welding work can be facilitated.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a perspective view of an embedding metal fitting for lifting a lightweight cellular concrete panel of the present invention, and FIG. 2 is a perspective view of a reinforcing member. As shown in FIG. 2, a lightweight cellular concrete panel (hereinafter referred to as “concrete panel”) 1 includes a frame body 3 substantially similar in shape to the concrete panel 1.
The frame body 3 is assembled with an outer frame portion and a band plate 5 whose middle portion is a band-shaped steel material. The strip 5 is disposed so that the width direction is the thickness direction of the concrete panel 1. The strips 5 are welded and joined with their ends (cut ends) abutting, and both side ends (both ends) of each strip 5 are in the same plane. Mesh streaks 7a and 7b are welded to both surfaces of the flat frame body 3. A reinforcing member 9 is composed of the frame body 3 and mesh bars 7a and 7b welded to the frame body 3.

On the other hand, on one short side of the outer frame of the reinforcing member 9, an embedding metal fitting for lifting a pair of lightweight cellular concrete panels for hanging the concrete panel 1 (hereinafter, referred to as "metal fittings").
11) is fixed by welding. As shown in FIG. 1, the embedding metal fitting 11 for lifting includes a hexagonal column-shaped nut 13 and a pair of angle pieces 15 and 17. The nut 13 is a hexagonal column-shaped nut that is long in the bolt insertion direction. Angle pieces 15, 17
The cross-sectional shape in a direction perpendicular to the longitudinal direction is a vertical piece 15a
17a and an L-shaped angle member composed of horizontal pieces 15b and 17b. The angle pieces 15 and 17 have the same thickness as the band plate 5. Hexagonal nut 1
The angle pieces 3 and the angle pieces 15 and 17 are arranged so that the longitudinal directions thereof are in the same direction.
a is fixed by welding. That is, the nut 13 is welded and fixed between the angle pieces 15 and 17. The nuts 13 are angle pieces 15, 1
7, a gap is formed between the nut 13 and the band plate 5. By forming this gap, when the angle pieces 15 and 17 to which the nuts are fixed in advance are fixed to the strip 5 by welding, the welding operation can be facilitated.

The ends of the angle pieces 15 and 17 welded and fixed to the nut 13 are welded and fixed to one short side of the outer surface of the reinforcing member 9. That is, the nut 13 is fixed to the reinforcing member 9 via the angle pieces 15 and 17. By fixing the ends of the angle pieces 15 and 17 to the band plate 5, the bolt insertion direction of the nut 13 is orthogonal to the surface of the band plate 5. That is, the concrete panel 1 is hung vertically with one short side of the outer frame facing upward through the nut 13.

[0010] The lifting embedded fitting 1 constructed as described above.
1 is that the thickness of the angle pieces 15, 17 is about the same as that of the strip 5, so that the heat generated between the angle pieces 15, 17 and the strip 5 is smaller than when the nut 13 is directly welded to the strip 5. The difference in shrinkage is small, and distortion during welding and poor welding are unlikely to occur. Further, since the nut 13 is welded to the strip 5 at the end faces of the angle pieces 15 and 17 having an L-shaped cross section, the welding area is larger than that of the end face of the nut 13 alone. Are dispersed, and the strength against external forces from multiple directions can be improved. Further, since the L-shaped angle pieces 15 and 17 can abut at right angles to the band plate 5, vertical holding of the nut is facilitated, and mounting accuracy of the nut is improved.

[0011]

As described in detail above, according to the embedding metal fitting for lifting a lightweight cellular concrete panel according to the present invention, welding distortion or poor welding does not occur. Further, local stress at the time of hanging can be dispersed. Further, the nut can be stably brought into contact with the band plate, and workability at the time of mounting can be remarkably improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of an embedding metal fitting for lifting a lightweight cellular concrete panel of the present invention.

FIG. 2 is a perspective view of a reinforcing member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lightweight cellular concrete panel 5 Strip plate 9 Reinforcement material 11 Embedded metal fitting for lifting lightweight cellular concrete panel 13 Nut 15, 17 Angle piece 15a, 17a Standing piece

Claims (1)

(57) [Scope of request for utility model registration] 1. An embedding metal fitting for lifting a lightweight cellular concrete panel welded and fixed to a reinforcing member, wherein an outer frame of the reinforcing member is formed by a strip arranged in a width direction in a thickness direction of the lightweight cellular concrete panel. Is formed, a pair of angle pieces having the same thickness as the band plate, and a columnar nut are arranged with the longitudinal direction being the same direction, and the standing pieces of the pair of angle pieces are on the outer surface facing the nut. A buried metal fitting for lifting a lightweight cellular concrete panel, wherein an end face at one longitudinal end of an angle piece integrated with the hexagon nut is welded and fixed to the strip surface of the outer frame. .