JPH0442434Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention is a scaffolding board that is installed on the back side of expressway viaducts, general bridges, etc. for repair inspection, inspection, repainting, and various other works. It is related to the device.

(Prior Art) To explain a conventional example of a scaffold board laying device that is laid on the underside of a bridge, as shown in Figures 8 and 9, the main girder 1 on the lower side of the bridge a is A chain 4 is suspended from the lower flange 2, and the temporary scaffolding materials 3 are tied together and suspended, and the temporary scaffolding materials 3, which are oriented in the bridge width direction, are parallel to each other at intervals of about 50 cm in the bridge axis direction. A large number of scaffolding boards 3' are arranged between the temporary scaffolding materials 3 and laid down to form a scaffold.

(Problems to be solved by the invention) In the conventional scaffolding installation, it is necessary to suspend a large number of temporary scaffolding materials using a large number of chains, and to securely install a large number of scaffolding boards by laying them between the temporary scaffolding materials. In addition to requiring a lot of effort and time, laying scaffolding boards between temporary scaffolding materials that are not fixed and easily sway is dangerous work at high places. In many cases, there are managed areas such as parks, etc., and the above-mentioned construction work, which is used for a long time over the entire area directly under the bridge, requires nighttime work and there are places where work scaffolding cannot be laid, so improvements are desired.

(Means for Solving Problems) The present invention is a scaffold board laying device developed in view of the above-mentioned actual situation, and includes a plurality of removable guides suspended in parallel at predetermined intervals in a work place. a scaffold board storage box that is removably attached to the ends of the plurality of suspended guide beams; and a scaffold board storage box that is folded and stored in the scaffold board storage box and is guided between the guide beams and sent out. The scaffold board panel can be made longer by providing a flexible long scaffold board panel that forms a scaffold between the beams, and a winch member that is disposed in the scaffold board storage box and that lets out the scaffold board panel with a drive rope. At the same time, the number of scaffold assembly members and the number of man-hours for laying the scaffold are greatly reduced, making it possible to quickly and safely install the scaffold, improving the performance of scaffold laying and dismantling, and solving the above-mentioned problems.

(Function) Hang multiple guide beams parallel to each other at a predetermined interval in the work area, attach a scaffold board storage box to the end of the multiple suspended guide beams, and fold and store the scaffold board inside the scaffold board storage box. A long flexible scaffold board panel, which has been made longer and has been made longer, is guided between the guide beams using a drive rope by a winch member disposed in a scaffold board storage box, and laid as a scaffold between the guide beams. Disassembled in reverse order.

(Example) An embodiment of the present invention is shown in Figures 1 to 7, where a is a bridge, b is a bridge pier, and 1 is a main girder on the back side of the bridge. 1. A plurality of removable guide beams 6 suspended in parallel at predetermined intervals below (work place), and a scaffold board removably attached to the ends of the plurality of suspended guide beams 6. a storage box 9; a flexible long scaffold board panel 20 that is folded and stored in the scaffold board storage box 9 and is guided and drawn out between the guide beams 6, 6 to form a scaffold between the guide beams 6, 6; Scaffold board storage box 9
The construction includes winch members 35, 36, and 37 which are disposed at the base of the scaffolding board and extend out the scaffolding board panel 20 using a drive rope 36.

In detail, the guide beam 6 is provided with support parts that support both side edges of the scaffold board panel 20 on both sides, and a horizontal elongated hole (not shown) in a bracket fixed on the upper side as shown in FIG. A pair of lifting hooks 11, 11 are movably fitted in the holder, and a plurality of lifting hook devices 10 each having a connecting rod with a nut for fixing the lifting hooks are disposed between the lifting hooks 11, 11. As shown in Figures 1, 2, and 6, the guide beam 6 is removably fixed and suspended from the lower flange 2 of the main girder 1 with a lifting hook device 10 oriented in the bridge width (width) direction. They are arranged parallel to each other with a predetermined support interval (the width of the scaffolding board panel 20) between the piers b and b.

To explain the scaffold board storage box 9 in detail, as shown in FIGS. 1, 2, 4 and 6, the work floor 9 on the upper side
_A and a front plate 9 _b , and downward L-shaped fixing claws 9 _c are fixedly installed at the top and bottom of both ends of the front plate 9 _b , and are hung from the end of the guide beam 6 and are connected to diagonal members 16. Each fixing hole of the fixed fixture 15 (not shown)
By inserting and engaging each fixing claw _9c , the scaffold board storage box 9 is removably attached to the end of each guide beam 6, and is attached to both ends of each suspended guide beam 6. Multiple pieces are installed along the entire length.

The scaffold board panel 20 will be described in detail. As shown in FIG. 3, it is formed into a flexible elongated piece by foldably connecting a relatively wide scaffold board 21 with wires 22 and connecting fittings. The section is provided with running rollers 23, 23 (or sliding plates) for each scaffold board 21, and the part provided with the running rollers 23 is placed on the guide support part on the side of the guide beam 6, and the scaffold Guide beams 6, 6 of plate panel 20
Scaffolding board panel 2
As shown in FIG. , the guide beam 3 is folded and stored in the scaffold board storage box 9 and is used for feeding out.
2 are arranged.

Further, the scaffolding board storage box 9 is provided with a wire ₃₄ with a detachable adjuster 34a that holds the folded and stored scaffolding board panel 20 in the folded state.

In addition, on the outside of the scaffold board storage box 9, a second
As shown in Figures 4, 6, and 7, an electric or manual winch 35 is installed upright, and a drive rope 36 that is wound up and let out by the winch 35 moves the scaffold board panel in the scaffold board storage box 9 through a guide sheave 37, etc. A winch member is provided that is connected to the tip of the holder 20 and is extended or retracted as required. 40 in the figure is on both ends of each beam 6,
This is a scattering protection work that is removably installed obliquely through a diagonal member _40a to prevent paint from scattering and equipment from falling (see Fig. 2).

The embodiment of the present invention has the above-mentioned configuration, and when constructing a scaffold, the guide beam 6 is connected to the lower flange 2 of the main girder 1 by a plurality of hanging hook devices 10 and suspended. A plurality of guide beams 6 suspended in the direction of the bridge width (width) are arranged in parallel at predetermined intervals (corresponding to the width of the scaffolding board panels 20) between the piers b, b. Each suspended guide beam 6 is fixed by the lifting hook device 10.

Next, a scaffold board storage box 9 is attached to both ends of each of the suspended guide beams 6, and a plurality of downward L-shaped fixing claws _9c are attached to the fixing metal fittings 15 at the ends of the guide beams 6.
The work floor 9 a is formed on the upper surface of the scaffold board storage box 9 by being removably mounted by fitting and engaging it into the fixing hole (not shown), and the work floor 9 _a is formed on the upper surface of the scaffold board storage box 9 . A scattering protection device 40 is installed in the area.

A long flexible scaffold board panel 20 is folded and efficiently stored in the scaffold board storage box 9, and the driving rope 3 let out from the winch 35 is stored in the scaffold board storage box 9.
6 is connected to the tip of the scaffolding board panel 20 with or without the guide sheave 37, and the scaffolding board panel 20 is connected to each guide beam 6, with the driving rope 36.
6, and the scaffold board panels 20 are easily and quickly placed over the entire surface between the guide beams 6, 6, and laid as a scaffold. Each scaffold board panel 20
are formed relatively wide and connected so as to be foldable, so that the storage efficiency within the scaffold board storage box 9 is increased, and the scaffolding boards are formed long and the strength of the scaffold is increased. When the scaffold board storage boxes 9 are attached to both ends of the guide beam 6 as shown in FIG. 7, the scaffold board panels 20 are extended from both ends to the center of the guide beam 6, forming scaffolds A and B. Can be laid over the entire surface.

When dismantling the scaffold, the scaffold board panels are pulled in using a winch and drive rope, and the scaffold board storage box and guide beam are removed in this order.

(Effects of the invention) The present invention has the above-mentioned configuration, in which multiple guide beams are suspended in parallel at predetermined intervals in a work area such as the back side of a bridge. A scaffold board storage box is attached to the end of the scaffold board storage box, and the long flexible scaffold board panel folded and stored in the scaffold board storage box is guided between the guide beams by the driving rope of the winch member and is fed out between the guide beams. Scaffolding can be laid down and dismantled in reverse order, the scaffolding board panels are arranged in a long length, increasing the strength of the scaffolding, and the number of scaffolding assembly parts and construction man-hours are greatly reduced, allowing for quick and safe work. It can be laid down and dismantled, and the scaffolding laying and dismantling performance is significantly improved.

[Brief explanation of drawings]

FIG. 1A is an overall plan view showing an embodiment of the present invention, FIG. 1B is a side view of FIG. 1A, and FIG. 2 is a sectional view of FIG. 1A. A, B, and C are a plan view, side view, and cross-sectional enlarged view of the scaffold board panel, Figure 4 is an enlarged sectional view of the part shown in Figure 2, Figure 5 is a perspective view of Figure 4, and Figure 6 is a guide. A plan view showing the placement of scaffolding boards between beams, Figures 7A and B are side views of plan views for explaining the arrangement of scaffolding board panels, Figure 8 is a perspective view of the bridge, and Figure 9 is a conventional scaffolding installation. It is a partial cross-sectional view of a bridge showing. 6... Guide beam, 9... Scaffold board storage box, 2
0...Scaffold board panel, 35, 36, 37...Winch member, 36...Drive rope.

Claims (1)

[Scope of utility model registration request] A plurality of removable guide beams suspended in parallel at predetermined intervals in a work place, a scaffold board storage box removably attached to the ends of the plurality of suspended guide beams, and the scaffold. a flexible long scaffold board panel that is folded and stored in a board storage box and is guided and sent out between the guide beams to form a scaffold between the guide beams; A scaffold board laying device characterized by comprising a winch member for paying out scaffold board panels.