JPH0525927A - Assembling and disassembling of prefabricated scaffolding - Google Patents

Abstract

PURPOSE:To improve safety of assembling work and to save labor by enabling assembling and disassembling of a prefabricated scaffolding on the ground. CONSTITUTION:A plurality of parallel standards 4 are connected one by one by a brace 5 and a ledger 6 or a scaffold board to assemble a floor A. To increase the floor A upward, a standard 4 is added to the lower end of the standard 4 in the state of being hung by a crane, and a lower floor A is assembled. By repeating this one by one, assembling work can be conducted on the ground without requiring work at a high position, which enables improvement in safety and labor saving. Also, in disassembling a prefabricated scaffolding, the whole body is hung by the crane, the lower floor is disassembled in the state of floating above the ground, and lowering of the prefabricated scaffolding and disassembling of the lower floor are repeated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction method and a dismantling construction method for assembling a frame scaffold which is a working scaffold for a building.

[0002]

2. Description of the Related Art A frame scaffold constructed as a work scaffold for a building is constructed by connecting a plurality of building frames in parallel with a brace and a cloth frame or a step board to assemble a floor, and stacking the floors in plural stages. It is constructed at a predetermined height.

Conventionally, in order to assemble the above-mentioned frame scaffolding, first, the lowest floor on the ground is assembled, then each material is lifted onto the floor to assemble the upper floor, and this is sequentially arranged upward. It is repeatedly assembled to a desired height.

In addition, in order to dismantle the frame scaffold after construction,
This is done by dismantling the highest floor in order and dropping each material to the ground.

[0005]

By the way, in the above-mentioned conventional assembling method, each material has to be lifted as the assembling progresses upward, and the assembling requires high work, resulting in extremely poor work efficiency. There is a problem that it takes time and labor and is dangerous.

Further, in the conventional dismantling method, since the dismantling is performed from the upper floor, it is necessary to drop each material to the basement with a crane, and dismantling requires work at a high place. There is a problem that it is overloaded and dangerous.

[0007] Therefore, an object of the present invention is to provide an assembly method capable of safely and efficiently constructing a frame scaffold and a dismantling method capable of safely and efficiently disassembling the frame scaffold.

[0008]

In order to solve the above problems, a first aspect of the present invention relates to a floor of a frame scaffold by sequentially connecting a plurality of parallel construction frames with a brace and a cloth frame or a step board. When assembling and expanding the floor, it is lifted by a crane and held to add a building frame under each building frame to assemble a lower floor, and this is repeated to increase the floors.

Similarly, a second aspect of the invention is to dispose a frame scaffold constructed by stacking a plurality of stages in parallel by connecting a plurality of parallel construction frames with a brace and a cloth frame or a step board and stacking the floors. It is a method of dismantling the lower floors in order with the cranes being lifted and held by a crane.

[0010]

[Action]

1st Invention On the ground, assembling the floors by sequentially connecting the building frames arranged in parallel with the brace and the cloth frame or the step board, and in order to increase the floors upward, the floors on the ground are lifted and held by a crane. ,
While connecting the upper end of the building frame to the lower end of each building frame and adding it,
If the floors are assembled by connecting adjacent building frames with braces and cloth frames or walking boards, and the whole floor is put on the ground, it becomes a frame scaffolding with an increase of one floor.

As described above, the floors can be increased from below the frame scaffolds by lifting the frame scaffolds by the crane and assembling the floors by adding the building frames to the lower ends of the building frames, whereby the assembling work can be performed on the ground. This eliminates the need to lift materials and work in high places, improving work efficiency and safety.

Second invention When dismantling the frame scaffold constructed on the ground, the entire frame scaffold is lifted by a crane and floated from the ground to dismantle the lowest floor.

After that, the entire frame scaffolding is lowered by the height of the floor, the lower floors are dismantled, and this is repeated, so that dismantling work can be performed on the ground and safety is avoided by eliminating work at high places. And improve efficiency.

[0014]

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

As shown in FIGS. 1 and 2, the frame scaffold 1 comprises a pipe-shaped building frame 4 formed in a gate type or a torii type in which the upper portions of a pair of vertical columns 2 and 2 are connected by a horizontal crosspiece 3, The brace 5 connecting the vertical columns 2 of the building frames 4 arranged in parallel to each other, the cloth frame 6 or the walking board laid between the horizontal rails 3 of the facing building frame 4, and the upper and lower building frames 4 to each other. It will be assembled using the connecting joint 7.

A floor A is formed by erecting the building frames 4 so as to face each other and connecting them with the braces 5 and the cloth frames 6 or step plates. The floor A of the required length can be obtained.

As shown in FIG. 3, both the vertical columns 2,
A joint 7 is fixed to the upper end of 2, and the joint 7
The upper and lower building frames 4 can be connected to each other by inserting the upper half part of the upper building frame into the lower end of the upper building frame and connecting them.

The joint 7 is, as shown in FIG.
Is formed by accommodating the lock unit 10 inside the connection pipe 8 while surrounding the projection 9 for receiving the end of the vertical column 2 on the outer peripheral surface of the intermediate portion of the connection pipe 8 to which the connection pipe 8 is fitted. The lower half part is fitted to the upper end of the vertical column 2, and the lower end is fixed to the vertical column 2 by a pin 11 penetrating in the radial direction.

The lock unit 10 has a main body 12 formed in the shape of a vertically long strip, a coupling metal pin 13 protruding from the upper surface of the main body 12 at the upper end, and an intermediate position on the front surface of the main body 12. It is composed of an operation button 14 projecting on the rear side and a spring 15 attached to the back side of the main body 12,
Includes a fitting hole 16 for the operation button 14 in the protrusion 9.
A through hole 17 for the metal connecting pin 13 is provided on the outer peripheral surface of the upper portion.

On the lower end side of the vertical column 2, a connecting pipe 8 is provided.
A coupling hole 18 into which the metal coupling pin 13 fits is provided at a position corresponding to the through hole 17 when the metal coupling pin 13 is externally fitted and inserted.

When the lock unit 10 is assembled in the connecting pipe 8, the main body 12 is constantly pressed by the spring 10, the operation button 14 projects from the fitting hole 16 to the outer surface of the ridge 9, and the metal connecting pin 13 penetrates. When the operation button 14 is pushed in while protruding to the outside from the hole 17, the stepped portion 14a provided on the upper surface of the operation button 14 engages with the upper inner end surface of the fitting hole 16, and the coupling pin 13 is inserted into the through hole. The state of being immersed in the inside of the connection pipe 8 from 17 is maintained, and the upper half of the connection pipe 8 and the upper vertical column 2 can be inserted and removed without any trouble.

To connect the connection pipe 8 and the upper vertical column 2, the operation button 14 may be pushed down to unlock the stepped portion 14a, and the metal connecting pin 13 fits into the connecting hole 18 of the vertical column 2. It will be.

Next, a method for assembling the frame scaffold will be described.

First, the building frame 4 of the frame scaffolding is assembled by connecting the building frames 4 opposed to each other on the ground with the brace 5 and the cloth frame 6 or the step board, and repeating this planarly for the required length.

In order to increase the floor A upward, as shown in FIGS. 1 and 2, the hanging metal fittings 22 hung on the hooks 21 of the crane and the upper parts of the respective building frames 4 are connected by ropes or wires 23,
The entire temporary scaffold is suspended and held by an amount slightly higher than the height of the building frame 4.

In this state, the building frames 4 are added to the lower end of each building frame 4 from the ground. In this extension, the operation button 14 of the lock unit 10 in the joint 7 attached to the upper end of the vertical column 2 is pushed and locked, the metal coupling pin 13 is immersed, and the joint 7 of the lifted building frame 4 is constructed in a higher order. Insert into the lower end of the vertical column 2 in the frame 4, and operate the operation button 14 in this inserted state to release the lock,
Is fitted over the through hole 17 and the coupling hole 18, the upper and lower building frames 4 are connected via the joint 7, and the lower building frame 4 is suspended as shown in FIG.

In this way, the floor A is assembled by connecting the building frames 4 to the lower ends of the hoisted building frames 4 and connecting the adjacent building frames with the brace 5 and the cloth frame 6 or the step board. After that, if the whole is lowered and brought into contact with the ground, the floor A becomes a frame scaffolding with a further increase.

As described above, in order to sequentially increase the floor A upward, it is sufficient to carry out lifting by a crane and replenishment from below in sequence, and all the work can be performed on the ground.

In the frame scaffolding, a tensile load is applied to the joint 7 portion by hoisting it with a crane. However, as shown in FIG. 4, the joint pipe 8 and the upper end of the lower building frame are pinned. Since the connection pipe 8 and the lower end of the upper building frame are connected by the metal connecting pin 11, the connection portion has a high tensile strength and the crane can be lifted without any trouble.

In order to eliminate the tensile load applied to the joint 7 when the frame scaffold is hoisted, the rope 2 attached to the hoisting metal fitting 22 as shown by the chain line in FIG.
3 or wire connections to the frame scaffold may be chosen to be at the lowest building position.

The disassembly of the frame scaffold assembled as described above is
As with assembly, the entire frame scaffolding can be lifted by a crane and disassembled in order from the lowest floor.

That is, when the entire frame scaffold is lifted by a crane so as to float above the ground and the lowest floor is dismantled, the frame scaffold is lowered by the height of the floor to dismantle the lower floor, and By repeating it in sequence, dismantling can be performed by work on the ground.

The connection of the rope or wire to the frame scaffold at the time of disassembly may be set in the building frame of the upper floor.

[0034]

[Effect] As described above, according to the present invention, the assembly and dismantling of the frame scaffolding can be performed on the ground altogether, and no work at a high place is required at the time of assembling and dismantling, so that the safety of scaffolding assembly and dismantling is greatly improved. Can be improved.

Further, the work of raising and lowering each material constituting the frame scaffolding as the assembly and dismantling progress is unnecessary, and since the assembling work and the dismantling work can be performed on the ground, the work efficiency is improved, Labor saving can be achieved.

[Brief description of drawings]

FIG. 1 is a front view during assembly showing the assembly method of the present invention.

FIG. 2 is a side view of the above.

FIG. 3 is an enlarged vertical cross-sectional view showing a connecting portion of upper and lower building frames.

FIG. 4 is an enlarged vertical sectional view of a joint portion of the above.

[Explanation of symbols]

1 framework scaffolding 2 vertical columns 4 building frames 5 braces 6 cloth frame 7 joint 8 connection pipes A floor

Claims (2)

[Claims] 1. A floor of a frame scaffolding is assembled by sequentially connecting a plurality of parallel building frames with a brace and a cloth frame or a step board, and when the floors of the framed scaffolding are suspended and held by a crane, they are placed under each building frame. A method for assembling a frame scaffold, which is characterized by adding building frames to assemble lower floors, and repeating this to increase floors. 2. When disassembling a frame scaffold constructed by stacking a plurality of stages in which a plurality of parallel building frames are connected in sequence with a brace and a cloth frame or a step board and the floors are stacked, the frame scaffold is lifted and held by a crane. The method of dismantling the frame scaffold, which is characterized by disassembling the lower floors in that order.