JP7573392B2 - Temporary scaffolding forming tool - Google Patents

Description

The present invention relates to a temporary scaffolding forming jig that supports temporary scaffolding that is installed during the construction or repair of buildings such as apartment buildings.

Conventionally, for example, when constructing or repairing an apartment building, temporary scaffolding has been set up on the ground to allow construction work to be carried out from the outside. However, apartment buildings with seismic isolation structures shake differently from the ground during an earthquake, so there was a risk that they would collide with and damage the temporary scaffolding, or even cause it to collapse. Therefore, it was necessary for the apartment building to support the temporary scaffolding so that it was raised above the ground.

Therefore, when the top of the balcony of an apartment building is made of a thick concrete structure, a technique has been disclosed that can avoid collisions between the apartment building and the temporary scaffolding by using a support bracket fixed to the structure to raise the temporary scaffolding (see, for example, Patent Document 1). According to this, it is possible to effectively use the space below around the structure under construction as a passageway or material storage area by dismantling and removing the lower part of the temporary scaffolding depending on the progress of the work.

JP 2001-323654 A

However, in Patent Document 1, in order to fix the support bracket to the structure, a fastening insert is inserted into the side of the structure. In other words, the reaction force of the load of the temporary scaffolding that the support bracket receives is suppressed only by the fastening insert, so the installation of the fastening insert is extremely important, and it is time-consuming to assign construction work to specialized workers or experienced personnel, which may ultimately reduce the workability when setting up the temporary scaffolding.

As with the above-mentioned fastening inserts, there is also a method of fixing the support brackets of the temporary scaffolding by inserting a chemical anchor vertically into the surface of the balcony and suppressing the reaction force using only the pull-out strength of the chemical anchor. However, this not only reduces the ease of work when setting up and removing the temporary scaffolding and requires restoration work on the balcony after removing the chemical anchor, but also poses the risk of causing inconvenience to the occupants of the rooms on the balcony during repairs.

In other words, the inventors came up with the idea of not fixing the support bracket and suppressing the reaction force with a single component such as the fastening insert or the chemical anchor, but at least suppressing the reaction force with a separate component, thereby distributing the load on each component, eliminating the need to directly insert the fastening insert or chemical anchor into the structure, and generally avoiding the aforementioned reduced workability and inconvenience to residents' lives.

The object of the present invention is to provide a temporary scaffolding forming tool that distributes the suppression of the reaction force against the load of the temporary scaffolding applied to the support bracket, thereby avoiding a decrease in workability when setting up and removing the temporary scaffolding and inconvenience to residents' lives during repairs.

In other words, the temporary scaffolding formation jig of the present invention comprises a support bracket that supports the temporary scaffolding, a fixing part that fixes the support bracket to the structure of a building, and a reaction force transmission part that transmits a reaction force against the load of the temporary scaffolding applied to the support bracket, and the reaction force transmission part is arranged between the support bracket and another structure located on an upper layer of the structure without receiving support from the structure from directly below, and transmits the reaction force to the other structure.

It is desirable that one end of the reaction force transmission part is removably fixed to the support bracket, and the other end of the reaction force transmission part is removably fixed to the back surface of the other body.

It is desirable that one end and/or the other end of the reaction force transmission part have a jack structure that can slide freely in the longitudinal direction.

It is preferable that the fixing portion is a push bolt that can be attached and detached to the support bracket and presses the body.

According to the present invention, the reaction force of the load of the temporary scaffolding received by the support bracket is suppressed by distributing it between the fixed part and the reaction force transmission part, which is expected to avoid a decrease in workability when setting up and removing the temporary scaffolding and inconvenience to residents during repairs.

FIG. 1 is a perspective view showing a state in which a temporary scaffolding forming jig is used in one embodiment of the present invention. FIG. 13 is a conceptual diagram showing the operating status of the temporary scaffolding forming jig.

Hereinafter, a temporary scaffolding forming jig in one embodiment of the present invention (hereinafter, also referred to as "this temporary scaffolding forming jig") will be described with reference to Figs. 1 and 2.
In these drawings, when there are multiple identical parts, only one part is numbered. For the sake of convenience, certain parts and lines leading to these parts are shown with hidden lines (dashed lines) or imaginary lines (two-dot chain lines). In the explanations, terms indicating orientation such as up, down, length, width, vertical, and horizontal are basically based on the building.

First, we will explain the structure of this temporary scaffolding forming jig with reference to Figure 1.

As shown in Figure 1, this temporary scaffolding forming jig is used to form temporary scaffolding S that is installed when constructing or repairing an apartment building M that has two or more floors. The apartment building M has a structure C1 that protrudes outward and corresponds to the verandas and balconies of the rooms on each floor, or the common corridors. The structure C1 has a structure tip portion Ca that rises vertically from its tip. The structure tip portion Ca is the part where a handrail made of, for example, a glass or aluminum plate is installed, and there is no limit to the thickness.

The temporary scaffolding S may be of a known structure, and is basically composed of multiple building sites T arranged vertically and scaffolding boards P arranged at a specified height on the building sites T. There is no limit to the height, but the height of the third to fifth floors of the apartment building M is supported by this temporary scaffolding formation jig as one set. Only the bottom end of the temporary scaffolding S is supported by this temporary scaffolding formation jig, and the part above the bottom end is connected by unnumbered wall connectors. In other words, the second set of temporary scaffolding located above the first set of temporary scaffolding S is supported by a different temporary scaffolding formation jig.

In detail, this temporary scaffolding forming jig comprises a support bracket 1 that supports the temporary scaffolding S, a fixing part 2 that fixes the support bracket 1 to the tip part Ca of the structure C1 of the housing complex M, and a reaction force transmission part 3 that transmits a reaction force against the load of the temporary scaffolding S applied to the support bracket 1, and the reaction force transmission part 3 is disposed between the support bracket 1 and another structure C2 on the upper layer of the structure C1, and transmits the reaction force to the other structure C2. At least two of this temporary scaffolding forming jig are attached at a predetermined building pitch, in other words, two or more may be attached depending on the total width of the temporary scaffolding S.

According to this configuration, the reaction force transmission part 3 is pushed upward by the reaction force against the load of the temporary scaffolding S and is pressed against the back surface of another structure C2, thereby transmitting the reaction force to the other structure C2. In other words, the reaction force is borne by the other structure C2 via the reaction force transmission part 3, so that the suppression of the reaction force applied to the support bracket can be distributed, and the temporary scaffolding S can be stably supported without having to pierce the fixing part 2 into the surface or side of the structure C1.

The support bracket 1 is a generally triangular jig comprising a first bar 11, a second bar 12 attached by welding or the like at a substantially right angle to the first bar 11, and a third bar 13 attached by welding or the like at an angle to the first bar 11 and the second bar 12. It may be made of a known material, shape, dimensions, and weight, and when attached to the frame C, the first bar 11 protrudes generally horizontally beyond the frame tip Ca to the inside and outside of the apartment building M, and the second bar 12 faces the outer surface of the frame tip Ca.

The first bar 11 has a cylindrical first socket 11a, 11a protruding upward for insertion of the building site T. The vertical dimension of the first bar 11 may be lower than the height dimension of the gap between the bottom end surface of the glass or aluminum handrail and the top surface of the tip portion Ca of the structure, and the height dimension may be about 40 mm.

When the support bracket 1 is attached to the tip end Ca of the structure, the fixing part 2 is located inside the housing complex M from the tip end Ca of the structure, and is detachable from the first bar 11 of the support bracket 1. It is equipped with a cylindrical slide part 21 that allows the first bar 11 to slide freely by inserting it, a pressing bolt 22 that presses the tip end Ca of the structure toward the outside of the housing complex M via an unnumbered protrusion that protrudes downward from the slide part 21, and a second socket 23 that protrudes upward from the slide part 21 for inserting the reaction force transmission part 3.

The sliding portion 21 slides according to the degree of pressure of the pressing bolt 22 against the body tip portion Ca. The pressing bolt 22 presses against the body tip portion Ca and clamps the body tip portion Ca together with the second bar material 12 of the support bracket 1, thereby fixing the support bracket 1. The second socket 23 is cylindrical, and the inner surface may be formed into a female thread shape.

With this configuration, even if a glass or aluminum handrail is attached to the tip Ca of the structure, the first bar 11 can be inserted from the outside of the apartment building M through the gap between the bottom end surface of the handrail and the top surface of the tip Ca of the structure, then the sliding part 21 of the fixing part 2 can be inserted into the first bar 11 from the inside of the apartment building M and slid to the specified position, and finally the pushing bolt 22 can be used to press the tip Ca of the structure, thereby easily fixing the support bracket 1 to the structure C.

The reaction force transmission part 3 is a rod material such as a steel pipe, but may also be a steel plate, and the dimensions, shape, and weight are not limited. One end of the reaction force transmission part 3 is removably fixed to the support bracket 1, and specifically, it may be fixed by simply inserting it into the second socket 23 of the fixing part 2, or it may be formed in a male thread shape and screwed into the female threaded second socket 23. The other end of the reaction force transmission part 3 is removably fixed to the back surface of another structure C2, and specifically, it may be fixed by simply pressing it against the back surface of another structure C2 by the reaction force against the load of the temporary scaffolding S applied to the support bracket 1, or an anti-slip member for the back surface may be attached to the end face.

The total length of the reaction force transmission part 3 may be approximately equal to the height dimension from the top surface of the tip part Ca of the body to the back surface of another body C2, or may be shorter than the height dimension. If it is shorter, the height may be adjusted by providing a specified underlay member on one end side and/or the other end side of the reaction force transmission part 3.

With this configuration, after the support bracket 1 is attached to the structure C1, the reaction force transmission part 3 can be easily installed between the support bracket 1 and another structure C2. In other words, one end of the reaction force transmission part 3 can be easily fixed and positioned to the support bracket 1 by the second socket 23 of the fixing part 2, and then the other end of the reaction force transmission part 3 can be fixed to the back surface of the other structure C2, so that the reaction force against the load of the temporary scaffolding S applied to the support bracket 1 can be reliably transmitted to the other structure C2.

One end and/or the other end of the reaction force transmission part 3 may have a jack structure that can slide freely in the longitudinal direction. Specifically, one end and the other end of the reaction force transmission part 3 have a screw-type jack (not shown) that can be inserted and removed freely in the longitudinal direction from each end face, and in this case, the total length of the reaction force transmission part 3 may be shorter than the height dimension from the top surface of the body tip part Ca to the back surface of another body C2. In other words, the reaction force transmission part 3 may have a structure that can be attached and detached freely by raising and lowering the jack.

With this configuration, regardless of the specifications of the apartment building M or the support bracket 1, the reaction force against the load of the temporary scaffolding S applied to the support bracket 1 can be transmitted to another structure C2 via the reaction force transmission part 3. In other words, it is not necessary to design the reaction force transmission part 3 by strictly considering the height dimension from the top surface of the structure tip part Ca to the back surface of the other structure C2 or the height dimension of the first bar 11 of the support bracket 1, and it is expected that both the manufacture and installation of the reaction force transmission part 3 can be easily performed.

Next, we will explain the operation of this temporary scaffolding forming jig with reference to Figure 2.

As shown in Figure 2, when the load of the temporary scaffolding S is applied in the direction of arrow L1 to the support bracket 1 attached to the main body C1, the outside of the support bracket 1 tries to move in the direction of arrow R1 with the tip Ca of the main body as the fulcrum, and the inside of the support bracket 1 tries to move in the direction of arrow R2. In other words, a reaction force in the direction of arrow R2 is generated on the inside of the support bracket 1 against the load of the temporary scaffolding S in the direction of arrow L1.

The fixing part 2 bears the reaction force in the direction of the arrow R2 while fixing the support bracket 1 to the tip part Ca of the structure. The reaction force transmission part 3 is fixed to the back surface of the support bracket 1 and another structure C2, and is pushed up by the reaction force. Therefore, the reaction force is generated in the direction of the arrow L2 and is transmitted to the other structure C2. In other words, because the fixing part 2 and the reaction force transmission part 3 distribute and bear the reaction force, the reaction force can be suppressed without having to pierce the fixing part 2 into the structure C1 like a chemical anchor.

The temporary scaffolding forming jig shown in this embodiment is not limited to the above, and includes the position, shape, and dimensions of all parts, as well as the relationships between parts, as long as the same effect is obtained.

1 Support bracket, 11 First bar, 11a First socket, 12 Second bar, 13 Third bar, 2 Fixing part, 21 Slide part, 22 Push bolt, 23 Second socket, 3 Reaction force transmission part, S Temporary scaffolding, T Building site, P Scaffolding board, C Structure (C1 Structure, Ca Structure tip, C2 Another structure), M Apartment building

Claims (4)

A support bracket for supporting the temporary scaffolding;
A fixing portion for fixing the support bracket to a building frame;
A reaction force transmission unit that transmits a reaction force against the load of the temporary scaffolding applied to the support bracket,
The reaction force transmission part is disposed between the support bracket and another structure located above the structure without being supported by the structure from directly below , and transmits the reaction force to the other structure.
One end of the reaction force transmission portion is detachably fixed to the support bracket,
The temporary scaffolding forming jig according to claim 1 , wherein the other end of the reaction force transmission part is detachably fixed to the rear surface of the other structure. The temporary scaffolding forming jig according to claim 1 or 2, characterized in that one end and/or the other end of the reaction force transmission part has a jack structure that is slidable in the longitudinal direction. The temporary scaffolding forming jig according to any one of claims 1 to 3, characterized in that the fixing portion is a pressing bolt that is detachably attached to the support bracket and presses the body.

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