JPH0442435Y2 - - 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 installed on the underside of a bridge, as shown in Figs. 9 and 10, 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 method of laying scaffolding boards, it is necessary to suspend many temporary scaffolding materials using many chains, and to lay and secure a large number of scaffolding boards between the temporary scaffolding materials. It was hot,
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 roads, rivers, parks, etc., and the above-mentioned construction work, which is used for a long time over the entire area directly under the bridge, requires night work and there are places where work scaffolding cannot be laid, so it is difficult to improve. 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 removably attached to the ends of the plurality of suspended guide beams;
A flexible long scaffold board panel is wound up and stored in the scaffold board storage box, and is guided and unrolled between the guide beams to form a scaffold between the guide beams, and is arranged in the scaffold board storage box. By being equipped with a winch member that lets out the scaffold board panels with a drive rope, the number of scaffold assembly parts and the number of man-hours for laying the scaffold can be significantly reduced, and the scaffold can be laid quickly and safely, improving the performance of scaffold laying and dismantling. This solves the problems mentioned above.

(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 roll up the scaffold board storage box into the scaffold board storage box. The long flexible scaffolding board panels stored in the scaffolding board are guided between the guide beams by a drive rope using a winch mechanism installed in the scaffolding board storage box, and laid as a scaffold between the guide beams, and in the reverse order. It will be dismantled.

(Example) An embodiment of the present invention is shown in Figures 1 to 8, 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 and a flexible long scaffold board panel 20 that is wound up and stored in the scaffold board storage box 9 and is guided and unwound between the guide beams 6 and 6 to form a scaffold between the guide beams 6 and 6. The scaffold board panel 2 is installed in the scaffold board storage box 9 and is connected to the drive rope 36.
The structure includes winch members 35, 36, and 37 for feeding out the zero.

To explain the guide beam 6 in detail, as shown in FIGS. 1, 2, 3, and 5, guide support parts 6a are provided on both sides to support the both side edges of the scaffold board panel 20 in a fitted manner, and a second guide support part _6a is provided on both sides. As shown in the figure, a pair of hanging hooks 11, 11 are movably fitted into horizontal elongated holes (not shown) of a bracket fixed on the upper side, and a nut for fixing the hanging hooks is inserted between the hanging hooks 11, 11. A plurality of lifting hook devices 1 with attached connecting rods
0, and as shown in FIGS. 1, 2, and 5, the guide beam 6 is removably fixed to the lower flange 2 of the main girder 1 with a lifting hook device 10 oriented in the bridge width (width) direction. , are suspended and arranged parallel to each other at a predetermined support interval (the width of the scaffolding board panels 20) in the bridge axis direction, and are arranged between the piers bb.

To explain the scaffold board storage box 9 in detail, as shown in FIGS. 1, 2, 7 and 8, 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 each suspended guide beam 6 Multiple pieces are attached along the entire length on both ends.

To explain the scaffold board panel 20 in detail, as shown in FIGS. 3 and 4, the scaffold board 21 is connected by hinge connection 2
2, and is formed into a long and flexible length, and sliding plates 23, 23 are attached to each scaffold board 21 on both side edges, and the sliding plates 23 are placed on the guide support part _6a on the side of the guide beam 6. The scaffold board panel 20 is arranged so that the scaffold board panel 20 can be smoothly retracted and moved between the guide beams 6, 6, and the side edges of the scaffold board panel 20 are supported and held. , a winding drum 31 pivotally supported by a support member 34 as shown in FIG.
is wound up and stored in the scaffold board storage box 9,
The winding drum 31 is rotationally driven by the electric device 32 (motor) to promote unwinding between the guide beams 6, 6, and to wind the guide 33.
The structure has been designed to have the following features.

In addition, on the outside of the scaffold board storage box 9, a second
As shown in FIGS. 5, 6, and 7, an electric or manual winch 35 with an appropriate mechanism is installed upright, and a drive rope 36 that is wound up and let out by the winch 35 moves the scaffolding board storage box 9 through a guide sheave 37 and the like.
A winch member is provided that is connected to the tip of the inner scaffold board panel 20 and is fed out. 40 in the diagram
is a scattering protection work that is removably installed on both ends of each beam 6 via 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 bridge width direction are arranged in parallel at predetermined intervals (corresponding to the width of the scaffold board panels 20) between the bridge 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 suspended guide beam 6, and a plurality of downward L-shaped fixing claws _9c are attached to the fixing metal fittings 15 on the end side of the guide beam 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 mechanism 40 of an appropriate mechanism is provided.

A long flexible scaffolding board panel 20 is wound up and stored in the scaffolding board storage box 9, and a drive rope 36 let out from a winch 35 is passed through a guide sheave 37 to the tip of the scaffolding board panel 20. each guide beam 6, with a driving rope 36.
6 (see Figures 5, 6, and 7), the winding drum 31 is rotated by the electric device 32 as necessary, and the scaffold board panel 20 is easily spread over the entire surface between the guide beams 6, 6. It is quickly attached as a scaffold. When the scaffold board storage boxes 9 are attached to both ends of the guide beam 6, the scaffold board panels 20 can be laid over the entire surface by feeding them from both ends to the center of the guide beam 6, as shown in FIGS. 5 and 6. Even if the footboard storage box 6 is disposed only at one end, the scaffolding panel 20 can be easily moved over the entire length between the guide beams 6, 6 using the winch members (35, 36, 37).
Can be deployed quickly.

When dismantling the scaffolding, the scaffolding board 20 is removed by the electric device 32.
It is dismantled by removing the winding, scaffold board storage box, and guide beam 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 at 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 that has been rolled up 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, which greatly reduces the number of scaffold assembly parts and construction man-hours. It also enables quick and safe installation and dismantling, and significantly improves scaffolding and disassembly performance. It has been improved.

[Brief explanation of the drawing]

FIG. 1A is an overall plan view showing an embodiment of the present invention, FIG. 1B is a side view showing the - view of FIG. 1A, FIG. 2 is a cross-sectional view of FIG. 1B, and FIG. is a cross-sectional view of the - part in Figure 1A, Figure 4 is a side view of the scaffold board panel, Figure 5 is a plan view between the guide beams in Figure 1A, and Figure 6 is a side view of Figure 5. Figure 7 is an enlarged sectional view of the part shown in Figure 2, Figure 8 is a side view of Figure 7, Figure 9 is a perspective view of a bridge showing conventional scaffolding, and Figure 10 is the same as Figure 9. It is a partial cross-sectional view. 6... Guide beam, 9... Scaffold board storage box, 2
0... Scaffolding 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 elongated scaffold board panel that is wound up and stored in a board storage box and is guided and unwound between the guide beams to form a scaffold between the guide beams; and a flexible long scaffold board panel that is arranged in the scaffold board storage box and driven. A scaffolding board laying device comprising a winch member for paying out the scaffolding board panel with a rope.