JP2508894Y2 - Construction scaffolding - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a steel scaffolding board installed along the periphery of a building.

[Prior Art] A scaffolding board for construction is a single scaffolding board in which both sides of a thin steel plate are bent to form reinforcing edges, and a part of the reinforcing edges is further bent inward to form a bottom edge. Both ends in the longitudinal direction are inserted into a frame body bent into a substantially U-shape and fixed by welding. As the welding method and order, first, the upper surface of the scaffolding plate alone and the upper surface of the frame are fixed by spot welding, and then the lower surface of the bottom edge and the upper surface of the frame are fixed by carbon dioxide arc welding.

[Problems to be Solved by the Invention] However, when fixing the upper surface of the scaffolding plate alone and the upper surface of the frame by spot welding, the upper surface of the single scaffolding plate and the upper surface of the frame are sandwiched by the electrodes of the spot welding machine. Since it is pressed down in this way, it is possible to perform welding work relatively easily.However, when welding the bottom edge lower surface and the frame lower surface, when welding the bottom edge lower surface and the frame lower surface, It is necessary to provide a pressing device that presses the boundary portion of the lower surface of the frame body against the lower surface of the bottom edge so that a gap is not formed between these portions. In addition, the pressing portion of this pressing device needs to be as close as possible to the boundary portion of the lower surface of the frame body, but if it is too close, it may come into contact with the welding torch during welding and cause a harmful effect. Also, since spatter that is generated by droplets of droplets during welding adheres to this pressing part, it is necessary to perform troublesome work such as frequently removing spatter and replacing the pressing part. Is also a factor that reduces the welding work efficiency.

In view of the above points, the present invention, when welding the bottom edge lower surface of the scaffolding plate alone and the frame lower surface portion, makes the boundary portion between the bottom edge lower surface and the frame lower surface portion adhere to each other without using a pressing device. The purpose is to provide a scaffolding board for construction devised in.

[Means for Solving the Problems] In order to achieve the above object, the present invention folds both sides of a thin steel sheet to form a reinforcing edge, and further bends the reinforcing edge inward to form a bottom edge portion. In a scaffolding plate for construction in which a frame body bent in a substantially U shape is fixed to both ends of the formed scaffolding plate, a holding piece cut off at a predetermined interval is formed on the lower surface part of the frame body, and the lower surface of the frame body is formed. Construction in which the bottom edge of the scaffolding plate alone is fitted into the gap between the bottom portion and the sandwiching piece to bring the boundary portion between the bottom edge lower surface and the frame body lower surface into close contact and weld the boundary portion. It is intended to provide scaffolding boards.

[Operation] In the scaffolding board for construction according to the present invention, a holding piece cut off at an appropriate interval is formed on the lower surface of the frame body, and the bottom of the single scaffolding board is placed in the gap between the lower surface portion of the frame body and the holding piece. Since the frame body is fixed by inserting the edge end, when the frame body is attached, the bottom edge portion of the scaffolding plate alone and the boundary portion of the lower surface portion of the frame body do not come into close contact with each other to form a gap, When welding the lower surface of the frame and the bottom edge of the scaffolding plate alone, there is no need for a pressing device, and welding work can be performed efficiently.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

The scaffolding plate 1 for construction is a single scaffolding plate in which both sides of a thin steel plate cut to an appropriate length are bent to form a reinforcing edge 2 and further the reinforcing edge 2 is bent inward to form a bottom edge 3. A plurality of 4 are arranged in parallel, a frame body 5 formed in a substantially U-shape is fitted into both ends in the longitudinal direction, and the upper surface of the frame 5 and the upper surface of the scaffolding plate 4 are fixed by spot welding or the like. There is. At both ends of the lower surface 5a of the frame 5 and in the vicinity of the central portion thereof, a piece 6 for holding the end of the scaffolding plate 4 is formed. This holding piece 6 is formed by bending the bent side of the frame body 5 by press working so that the insertion side of the scaffolding plate 4 is cut off. It is made to be approximately the same as the plate thickness of No. 4. Reference numeral 6 denotes a hooking metal fitting 6 fixed to both ends of the reinforcing edge 2 of the scaffolding plate alone 4, which bridges the scaffolding plate 1 between the horizontal members of the pipe scaffolding.

When the scaffolding plate unit 4 and the frame body 5 are welded together, the scaffolding plate unit 4 is placed in the gap between the lower surface 5a of the frame body 5 and the holding piece 6.
The end portion of the bottom edge portion 3 is inserted and held. Then, the upper surface of the scaffolding plate 4 and the upper surface of the frame 5 are sandwiched by the electrodes of the spot welding machine and spot welding is performed. Next, the boundary portion between the bottom edge 3 of the scaffolding plate 4 and the lower surface 5a of the frame 5 is fixed by carbon dioxide arc welding. At this time, since the end portion of the bottom edge portion 3 of the scaffolding plate 4 is held between the lower surface portion 5a of the frame body 5 and the holding piece 6, the boundary between the bottom edge portion 3 and the lower surface portion 5a of the frame body 5 is held. A favorable welding can be performed because the portions are in close contact with each other.

In the above embodiment, the steel plate on the lower surface 5a of the frame 5 was cut off to form the sandwiching piece 6. However, the steel plate on the upper surface of the frame 5 was cut off to form the sandwiching piece, and the scaffolding plate unit 4 was formed. If you insert the upper end of the
Welding work will be easier, and the scaffolding plate will not fall apart even if the welding comes off. Modifications of the holding piece 6 within the scope of the present invention are included in the present invention.

[Effects of the Invention] As described above, in the scaffolding plate for construction according to the present invention,
The bottom edge portion 3 of the scaffolding plate 4 is held between the lower surface portion 5a of the frame body 5 and the holding piece 6 in which the lower surface portion 5a of the frame body 5 is cut off so that the lower surface portion 5a of the frame body 5 is held. Since the boundary portion with the bottom edge portion 3 is in a close contact state, there is no need for a pressing device which is troublesome for maintenance management, and there is no restriction on the attitude of the welding torch, so that welding can be performed efficiently.

[Brief description of drawings]

FIG. 1 is a perspective view of a scaffolding board for construction according to the present invention as seen from below, FIG. 2 is a vertical cross-sectional view of a main portion of the scaffolding board, and FIG. 3 is a bottom view of the main portion of the scaffolding board. 1 ... Construction scaffolding board, 3 ... Scaffolding board single bottom edge, 4 ...
Scaffolding board alone, 5 ... frame, 5a ... bottom surface of frame, 6 ... holding piece, 7 ... hook fitting

Claims (1)

(57) [Scope of utility model registration request] 1. A reinforcing edge is formed by bending both sides of a thin steel plate,
In a scaffolding plate for construction in which a frame body bent in a substantially U shape is fixed to both ends of a scaffolding plate having a bottom edge formed by bending the reinforcing edge further inward, a predetermined number is provided on a lower surface portion of the frame body. Form a sandwiching piece cut off at intervals, and insert the bottom edge of the scaffolding plate alone into the gap between the lower surface of the frame and the sandwiching piece to form the boundary between the bottom edge lower surface and the frame lower surface. A construction scaffold characterized in that they are closely contacted and the boundary portion is welded.