JP3379813B2 - Hanging scaffold - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspension scaffold used for construction work such as a building, and more particularly to a suspension scaffold which can be easily moved to an upper floor for use in construction of an elevator shaft and has less scatter of the scaffold.

[0002]

2. Description of the Related Art Conventionally, when performing facility work such as electrical wiring work and finishing work on a shaft such as in an elevator shaft in a building under construction, a scaffold is assembled in the elevator shaft with a pipe, and the work is done by going up to it. I am doing it. For subway construction and sewer construction, suspension scaffolding shown in Fig. 6 is used in the excavation hole. In FIG. 6, the hanging metal fittings 53 at the four corners of the uppermost scaffolding plate 50 are held by the chains 51 on the support I provided in the upper opening of the excavation hole. Then, the other scaffolding plates 50 are sequentially lowered and arranged in the excavation hole by the elevating tool 52 such as a chain block. On the scaffolding plate 50, which is a work floor, chains 51 are stretched between hanging metal fittings 53 provided at respective four corners, and are hung in the excavation holes at regular intervals. An opening 50b is provided on the floor 50a of the scaffolding board 50, and a ladder 54 is provided on the opening 50b.
I am going up and down to work.

[0003]

However, the above-mentioned conventional suspension scaffold is to be suspended downward in the excavation hole in sequence, and in the case where the elevator scaffold is sequentially operated upward. Could not be applied to. Also, with conventional suspension scaffolds, the scaffolding boards are hung by connecting them with a chain, so it is easy for the scaffolding board to shake during work,
It was very dangerous. In addition, there is a risk that items may fall into the opening for raising and lowering the ladder, which is not safe, and the working floor has an opening, so the working space was limited. . Therefore, the suspension scaffold of the present invention can be moved upward by a crane by appropriately contracting the overhanging supporting locking beam attached to the uppermost scaffolding floor, and by the steady rest provided on the scaffolding floor. The purpose is to provide a safe suspension scaffold that suppresses swinging and has little swinging of the scaffolding floor. Further, another object of the present invention is to provide a lid on the opening for raising and lowering the scaffolding floor to prevent falling from the opening and to allow a large space for the working floor. Another object of the present invention is to provide a holding metal fitting for locking the steady rest pipe on each scaffolding floor so that the steady run can be easily prevented without using a steady rest rod.

[0004]

The suspension scaffold of the present invention is a suspension scaffold used for construction work such as a building, which is a solution to the above-mentioned problems, and which is a supporting locking beam that can project from the end. A scaffolding floor is provided below the floor to allow the entire suspended scaffolding to be moved more easily to the upper floors, and a plurality of scaffolding floors suspended one after another under the locking beam can be attached to each end. A steady rod that can project from the section was installed to prevent the scaffolding floor from swinging. In addition, the upper end of the ladder is rotatably supported on the lower surface of each scaffolding floor so that the ladder is stored on the lower surface of the scaffolding floor during storage. Further, a lid member is provided so as to be openable and closable in each of the openings for raising and lowering provided in each scaffolding floor so as to prevent falling from the openings.
Further, instead of the steady rod, a gripping metal fitting may be provided on the scaffolding floor, and a steadying pipe connecting the scaffolding floor to the gripping metal fitting may be locked to prevent the scaffolding floor from swinging.

[0005]

In the suspended scaffolding of the present invention, a locking beam for supporting the suspended scaffolding is attached to the upper surface of the uppermost scaffolding floor so that the suspended scaffolding can be moved to the upper floor, and a steady rod is provided on each scaffolding floor. An anti-sway pipe that is provided or connects each scaffolding floor is locked to a side surface of the scaffolding floor to reduce shaking of the scaffolding floor. When suspending this suspended scaffold in the elevator shaft in the building frame, transport the suspended scaffold that connects multiple scaffold floors by chains etc. under the locking beam to the vicinity of the opening of the elevator shaft with a crane,
The locking beam is projected and held on the slab around the opening for the elevator shaft, and each scaffolding floor is placed in the elevator shaft. Next, slide the steady rods housed at both ends of the two core materials of each scaffolding floor to lock them so that they are stretched against the inner wall of the elevator shaft, and engage the locks provided at both outer ends of the core material. Tighten the steady rod with the stopper. Further, the ladder of each scaffold plate is lowered downward with the upper end as a fulcrum so that the worker can move to the upper and lower scaffold floors. Further, by closing the lid provided at the opening for raising and lowering provided on the working floor of the scaffolding floor, the entire upper surface of the scaffolding floor can be used as the working space. Furthermore, instead of the steady rod, the hanging scaffold can be fixed to the steady pipe with the gripping metal fittings to prevent the steady run.

[0006]

EXAMPLE An example of the suspension scaffold of the present invention will be described with reference to FIGS. Inside an elevator shaft of a building under construction, a suspension scaffold 1 is provided for performing interior work before installing the elevator. In the hanging scaffold 1, two locking beams 32 configured to be extendable and retractable are attached to the hanging metal fittings 5 provided at the four corners of the uppermost scaffold floor 2.
The locking beam 32 is bridged over the slab F at the edge of the upper opening 31 of the elevator shaft 30 so that the plurality of scaffold floors 2
Is suspended and supported. Suspension fittings 5 are provided at the four corners of each scaffolding floor 2, and each scaffolding floor 2 is vertically connected by a rope such as a suspension chain 6 locked to each suspension fitting 5.

The scaffolding floor 2 is, for example, a core material 2 having a rectangular cross section.
An outer frame is formed by combining 0 and 21 in a square shape, and a reinforcing material 11 is provided inside the outer frame and fixed by welding or the like. Further, below the four corners of the scaffolding floor 2, legs 9 are provided to secure a space for each scaffolding floor 2 so that they can be stacked and stored.
Is provided on the upper surface of the scaffolding floor 2, for example, a floor material 2a such as an expanded metal or a thin plate provided with a slip stopper.
Is affixed to the work floor. One of the four corners of the floor material 2a is opened as a lifting / lowering opening 7 for lifting / lowering, and a ladder 8 for lifting / lowering is provided under the lifting / lowering opening 7 for the scaffolding floor 2
And a lid member 10 that covers the lift opening 7 so as to be openable and closable.

[0008] When the suspension scaffold 1 is used, the elevating openings 7 are provided separately at the two diagonal positions of the elevating openings 7 of the scaffolding floor 2 in the upper and lower positions to prevent falling objects from falling. I'm out. Further, the upper end of the ladder 8 is rotatably supported on the lower surface of each scaffolding floor 2, and each ladder 8 is stored in parallel with the lower surface of the scaffolding floor 2 (in a two-dot chain line state in FIG. 4) when unused or stored. Thus, the legs 9 projecting downward from the four corners of the scaffolding floor 2 can be used for storage. The ladder 8 is provided on the lower surface of the scaffolding floor 2 with a stopper fitting to store the ladder 8 in parallel therewith. Moreover, since the ladder 8 is provided vertically to the scaffolding floor 2, the work surface of the scaffolding floor 2 can be widened. Further, if the ladder 8 is configured to be extendable and retractable, the length of the chains 6 that keep the intervals between the scaffolding floors 2 can be adjusted and set at arbitrary intervals.

The supporting locking beam 32 attached to the uppermost scaffolding floor 2 is an outer cylinder 32a slightly longer than the length of the scaffolding floor 2.
Insert the inner cylinder 32b so that it can slide on both ends of the
The fittings 32c are configured to be retractable, and the mounting fittings 32c are provided at positions corresponding to the hanging fittings 5 of the scaffolding floor 2 on both ends of one side surface of the outer cylinder 32a. Then, the fittings 32c provided at both ends of the two locking beams 32 and the hanging metal fittings 5 at the four corners of the uppermost scaffolding floor 2 are aligned and connected by the pins 33, so that the locking beam 32 is positioned at the uppermost scaffolding floor 2. To support the suspension of each scaffolding floor 2. Here, the locking beam 32 and the uppermost scaffolding floor 2 can be connected by a short rope or can be detachably connected by a bolt or a nut. Further, the mounting fitting 32c of the locking beam 32 is adapted to be locked above the wire 34 of the crane or the like so that each scaffolding floor 2 can be suspended. Although the locking beam is provided separately to reduce the weight of the scaffolding floor 2, if the weight of the scaffolding floor is light, the strength of the two core members 20 of the uppermost scaffolding floor 2 may be increased. May be enlarged, and the projecting beam may be projected to the left and right to be provided so as to be storable. In that case, the locking beam is provided integrally in the scaffolding floor 2, which is convenient for storage.

Two core members 20 on both sides of each scaffolding floor 2 are also provided.
The steadying rods 3 are inserted into both ends of the core so as to be able to project in a double cylinder shape, and screw holes 20a are provided at both outer ends of the core member 20, respectively. It is screwed. Also, the core material 2 of the scaffolding floor 2
A projecting plate 23 is provided on the upper surfaces of the floors 0 and 21 so that the article does not fall on the floor 2a. Further, the projecting plate 23 is provided with a grip metal fitting 24 for locking the steady rest pipe 11, which will be described later. The grip metal fitting 24 has a U-shaped cross section.
A locking tool 24b for inserting a pipe is attached to the side surface of 4a, and a locking bolt 24c is provided on the other side surface where the locking tool 24b is provided.

When the suspension scaffolding 1 is provided on the elevator shaft 30, a plurality of scaffolding floors 2 having the above construction are prepared, and the hanging chains 6 are respectively hung on the hanging metal fittings 5 provided at the four corners of each scaffolding floor to form the scaffolding floor 2. The upper and lower scaffolding floors 2 are connected in a vertical direction and each scaffolding floor 2 is connected by a chain 6, and two locking beams 32 for supporting are attached to the uppermost scaffolding floor 2, and the locking beams are attached. The wire of the crane is hung on the mounting metal fitting 32c of 1., and the suspension scaffold 1 is suspended by the crane in the elevator shaft 30.

Then, the inner cylinder 32b of the locking beam 32 is extended to the left and right to open the opening 3 of the elevator shaft 30.
The suspension scaffold 1 is supported in the elevator shaft by being locked to the slab F on the periphery of 1. By the way, as for the number of scaffold floors 2, any number of scaffold floors 2 can be installed depending on the total length of the elevator shaft 30 and the content of the work. In addition, after the locking beam 32 is supported by the slab F, the scaffolding floor may be hung one after another with a chain.

A scaffold 1 suspended within the elevator shaft 30.
After arranging, the slide bars 3 provided on both ends of the two core members 20 of each scaffolding floor 2 are slid outward, respectively, and the slide bars 3 are attached to the inner wall W of the elevator shaft 30 and the slabs on each floor. The core material 2
The locking bolts 22 provided at both ends of 0 are closed, and the steady rod 3 is fixed to prevent the scaffolding floor 2 from swinging. Also, when working inside the elevator shaft on the upper floor,
The inner cylinder 32b is housed in the supporting locking beam 32, the steady rests 3 of each scaffolding floor are housed, and then the scaffolding 1 is suspended by a crane.
Is moved to the upper floor, the inner cylinder 32b of the locking beam 32 is again overhanged to be supported by the slab F, and the steady rests of each scaffolding floor are overhanged to enable the work again.

Further, the holding metal fitting 2 is provided at the same position of the projecting plate 23 provided on the upper surface of each scaffolding floor 2 which is vertically positioned.
4 is attached, and the steady pipe 11 is locked to the locking tools 24b of the respective grip fittings 24 to connect the scaffolding floors 2 to each other, so that the steadying effect can be enhanced. The steady pipe 11 is not limited to one, but a plurality of steady pipes 11 can be provided. Further, a handrail 13 is appropriately provided on the chain 6 that suspends each scaffolding floor 2 to ensure safety during work.

In this embodiment, the steady rest pipe is provided in the vertical direction, but as shown in FIG. 5 (b), the projecting plate 23 of any scaffolding floor 2 is provided with a grip metal fitting 24 ', and an elevator shaft is provided. The horizontal steady-state pipe 12 whose one end is fixed to the inner wall of 30 is the vertical steady-state pipe 11
It may be provided at the same time. In this case, the holding metal fitting 24 'is a locking tool 24 that allows the pipe to pass through the upper surface of the grip portion 24a' so that the horizontal steadying pipe 12 can be locked.
b'is attached. When the grip fittings 24 and 24 'are provided on the scaffolding floor 2 to fix the steady rest pipes 11 and 12, the steady rest rod 3 need not be provided. Furthermore, each scaffolding floor may be provided with a brace and the upper and lower scaffolding floors may be connected to each other to prevent the swinging scaffold from swinging.

Further, although this suspension scaffold is provided on the elevator shaft, it can also be used for a vertical shaft surrounded by a wall like the elevator shaft. Further, the hanging scaffold 1 is suspended by attaching the locking beam 32 to the uppermost scaffolding floor 2, but in addition to this, a supporting work may be provided near the upper opening of the elevator shaft 30 so that the supporting scaffold can be suspended by a chain or the like. it can.

[0017]

According to the suspension scaffold of the present invention, by attaching a supporting locking beam to the uppermost scaffolding floor, the entire suspension scaffolding can be easily moved to the upper floor and can be re-worked. In addition, the steady rods provided on the core material of the scaffolding floor and the steady pipes provided in the up and down direction of each scaffolding floor can reduce the swinging of each scaffolding floor during work, so it is possible to work safely. it can. In addition, the locking beam provided on the top scaffolding floor can be removed and stored, and the steady rod provided on the core material of each scaffolding floor can be stored in the scaffolding floor, so it can be stored. It doesn't get in the way. In addition, the steady pipes connect the scaffold floors, so even if there are scaffold floors that do not use the steady rods provided on the core material, the same as with the scaffold floors that use the steady rods, It is possible to secure a work environment with little fluctuation. Also, since the lid member is provided in the opening for raising and lowering, the work floor can be widened by closing the opening with the lid member, and the fall from the opening can be prevented.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a suspension scaffold of the present invention.

FIG. 2 is a front view of a suspension scaffold suspended from an elevator shaft.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a front explanatory view of a case where a steady rest is extended.

FIG. 5 is an enlarged view (a) of a mounting portion of the steady rest pipe and a perspective view (b) when a horizontal steady rest pipe is used.

FIG. 6 is a perspective view showing a conventional example.

[Explanation of symbols]

1 suspended scaffolding 2 scaffolding floor 3 steady rest 8 ladders 10 Lid member 11 Steady pipe 32 locking beam

Claims (4)

(57) [Claims] 1. A suspending scaffold used for construction work such as a building, wherein a plurality of scaffolding floors are suspended via ropes under a supporting locking beam that can project from the end , and each scaffolding is suspended. Suspended scaffolds characterized in that each floor is equipped with steady rests that can project from the ends . 2. A hanging scaffold of claim 1, wherein the upper end of the ladder on the lower surface of each scaffold floor is rotatably supported. 3. An opening for raising and lowering is provided on each scaffold floor,
The claim 1 openable lid member is provided in each opening
Is the hanging scaffold described in 2. 4. A suspension scaffold used for construction work such as a building, wherein the scaffolding floor is hung one after another via ropes under a supporting locking beam that can project from the end , and each scaffolding is suspended. A grip metal fitting for steady rest is provided on the floor,
A suspended scaffold, wherein a ladder whose upper end is pivotally supported is provided on the lower surface of each scaffold floor.