JPS647150Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a temporary structure that is installed outside a cantilevered slab at a construction site without scaffolding, and is used to unload various materials such as materials and formwork materials on a certain floor to the upper floor. Scaffolding for cantilevered slabs.

Even in the so-called non-scaffolding construction method, in which scaffolding is not installed around the building, single pipes are temporarily installed at intervals in the longitudinal direction of the slabs across the outer edges of the upper and lower cantilevered slabs, and Vertical single pipes are usually provided, and a grid-like single pipe safety fence is constructed at the outer end of the cantilevered slab.

In such a situation, in order to unload various materials from a certain floor to the floor above it, conventionally, the unloaded materials were carried out to the outer end of the cantilever slab by leaning out from the horizontally suspended single pipe, and then the materials were lifted onto the upper floor. Workers on the floor repeatedly carry out lifting work, but leaning over the horizontal single pipe poses a safety problem, and there is also a high risk of accidentally dropping the unloaded material. It was hot.

Furthermore, depending on the material, a separate scaffold may be required if the material is short, but such work on a scaffold is even more dangerous, and improvements are awaited.

The present invention was developed in view of the above circumstances, and consists of four bolt holes formed in one of the opposing side plates and a single tube clamp provided on the outer surface of the other side plate. A rectangular cylindrical support fitting is screwed into the screw hole of a holding fitting with a screw hole embedded in the outer end of the upper and lower cantilever slabs at a predetermined interval in the horizontal direction and aligned in the vertical direction. Two single pipes are attached across the upper and lower cantilevered slabs using single pipe clamps on the upper and lower rectangular cylindrical support fittings, and a pair of brackets are attached to the two single pipes. , attached by two clamps provided on each bracket,
It is characterized in that a scaffolding board is erected across both brackets, and handrails are provided to surround the three sides of the scaffolding board except for the cantilevered slab side.

Embodiments of the present invention will be described below with reference to the drawings.

1a and 1b are cast-in-place cantilever slabs constituting balconies and hallways, and at the outer ends of each slab 1a and 1b, there are holding fittings 2 having screw holes a and anchor bolts 3 welded thereto. screw hole a
They are buried with the opening facing the outer end surface of the slab, separated by a predetermined distance l in the longitudinal direction of the slab, and with the upper and lower parts in the same phase.

Reference numeral 4 denotes a rectangular cylindrical support fitting having a bolt hole formed in one side plate portion facing each other and a single tube clamp 5 provided on the outer surface of the other side plate portion. It is attached by a bolt b that is screwed into a hole a. 6... is a single pipe that is tightly secured across the upper and lower clamps 5, 5, and the single pipe 6
A horizontally extending single pipe 7 is attached by a clamp 8 across the adjacent slabs in the longitudinal direction, and the single pipe 6 ...,
7... are provided in a grid pattern, and a safety fence is constructed here.

Reference numeral 9 denotes a spring-out scaffold, which is temporarily installed across two adjacent single pipes 6, and the horizontal single pipe 7 is installed between the two single pipes 6, 6. Not yet.

The spring-out scaffold 9 is installed across a pair of brackets 11, 11 provided with two upper and lower clamps 10, 10 for each of the two adjacent single pipes 6, 6, and the pair of brackets 11, 11. and the brackets 11, 11 in a state surrounding three sides of the scaffold board 12 excluding the slab side.
It is composed of handrails 13 erected.

The bracket 11 is made up of a triangular round pipe 11a and reinforcing members 11b, and the scaffolding board 12 is attached to and removed from the horizontal pipe portion of the triangular round pipe 11a via clamps 12a. It is designed to be installed freely.

The clamping tool 12a holds a half pipe material c that fits into the round pipe 11a from above, and a half pipe material d having a larger diameter than the half pipe material c, and a split pipe material e on one end side of the half pipe material c. A compression spring S and an engaging member f of the split pipe are interposed between the half pipe members c and d, and both ends of the engaging member f also serve as knobs for engaging and disengaging. Attach the retaining hook g, and remove the half pipe material c,
A retaining plate h for the hook g is provided on the other end of d, and when biased by a spring S, the round pipe 11a is held by the half pipe c and the engagement member f. In a state where the engaging member f is sandwiched and housed between the two half-pipe members c and d, it can be engaged with and detached from the round pipe 11a.

The handrail 13... consists of a round pipe 13a bent into a U-shape, and a round pipe 13b provided between opposing parts of the pipe 13a, and the lower end of the U-shaped round pipe 13a. The parts are fitted from above into bottomed pipes 14 fixed to the brackets 11, 11.

Incidentally, the handrails 13 may be provided to be detachably attached to the scaffold board 12.

Since the present invention has the above-described configuration, it can achieve the following effects.

A pair of brackets are attached to two single pipes attached across the upper and lower cantilevered slabs using two clamps provided on each bracket, and a scaffolding board is erected across both brackets to allow for bounce. Since the projecting scaffold is constructed, even if a bending moment due to a load is applied to the projecting scaffold, it can be reliably supported by the upper and lower cantilever slabs separated by an interval corresponding to the floor height. can withstand large loads.

Therefore, this spring scaffolding can be used to safely carry out lifting work to upper floors.

A rectangular cylindrical support fitting for mounting two single pipes to the upper and lower cantilever slabs is formed by forming bolt holes in one of opposing side plate parts and providing a single pipe clamp on the outer surface of the other side plate part; This is done via a bolt that screws into the screw hole of the holding fitting embedded in the cantilever slab, so the side plate of the square tubular support fitting functions as a washer that comes into contact with the concrete surface at the outer end of the cantilever slab. However, since a wide contact area can be secured, there is no risk of damaging the concrete surface of the cantilever slab.

By inserting a tool into the internal space of the rectangular cylindrical support fittings and operating the bolts, the scaffolding can be repurposed for use on the upper floor while the rectangular cylindrical support fittings are still attached to the two single pipes. , good workability.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which FIG. 1 is a side view of a pop-up scaffold for a cantilevered slab, FIG. 2 is a plan view of the same, and FIG. 3 is a sectional view taken along the line -- in FIG. 2. 1a, 1b...Cantilever slab, 4...Square tubular support fitting, 5...Single pipe clamp, 6...Single pipe, 10
... Clamp, 11 ... Bracket, 12 ... Scaffolding board, 13 ... Handrail.

Claims (1)

[Scope of utility model registration request] A bolt hole is formed in one of the opposing side plate parts,
Four rectangular cylindrical support fittings each having a single pipe clamp provided on the outer surface of the other side plate are placed at the outer ends of the upper and lower cantilever slabs at a predetermined distance in the horizontal direction and aligned in the vertical direction. Attach the two single pipes across the upper and lower cantilever slabs to the holding fittings with screw holes embedded in them using bolts that thread into the screw holes, and attach the two single pipes across the upper and lower cantilevered slabs to the single pipe clamps of the upper and lower rectangular cylindrical support fittings. A pair of brackets are attached to the two single pipes using two clamps provided on each bracket, and a scaffold board is erected across both brackets. A spring-out scaffold for a cantilever slab, characterized by having handrails surrounding three sides excluding the cantilever slab side.