JP7390812B2 - scaffold - Google Patents

Description

The present invention relates to scaffolding.

When constructing a high-rise building, scaffolding with a working floor that is placed so as to protrude outward from the outer circumferential surface of the column is sometimes attached to columns provided on the outer periphery of the high-rise building (for example, in a patent (See Reference 1). Since such scaffolding protrudes outward from the exterior wall material, it may get in the way when the exterior wall material is lowered and installed using a tower crane. For this reason, the work floor is configured to be able to rotate within a horizontal plane, and there are two situations in which the work floor protrudes beyond the outer peripheral surface of the column (protruding state), and one in which it does not protrude from the outer circumferential surface of the column and is lower than the outer circumferential surface of the column. Scaffolding is known that can be switched between a state where it is placed inside (a non-protruding state) and a state where it is swiveled. In the non-protruding state, a space is left open where the working floor in the protruding state is placed.
By adopting a scaffolding that allows the work floor to rotate within a horizontal plane, the work floor can be rotated to prevent it from protruding when installing exterior wall materials, and if a scaffold is required even after the exterior wall materials have been installed, it can be The floor can be pivoted into a protruding state.

Japanese Patent Application Publication No. 2001-303764

In the above-mentioned scaffold in which the work floor can pivot in a horizontal plane, the locus of the work floor when pivoting is larger than the space in which the protruding work floor is arranged in plan view from the vertical direction. For this reason, if temporary materials surrounding a high-rise building are installed around the protruding work floor, it will interfere with the temporary materials when the work floor rotates, making it difficult to rotate the work floor. It is.
In such a case, it is necessary to remove the temporary materials and rotate the work floor, or to remove the work floor without removing the temporary materials, both of which pose problems in that the work is dangerous and time-consuming.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a scaffold that can safely and easily clear a space where a protruding work floor is installed.

In order to achieve the above object, the scaffold according to the present invention has a work floor that is attached to a column having a rectangular cross section and is used in a protruding state that protrudes beyond a first outer circumferential surface that is one outer circumferential surface of the column. In the scaffolding, the work floor is configured to be pivotable around a work floor pivot axis extending in a horizontal direction parallel to the first outer peripheral surface in a plane perpendicular to the first outer peripheral surface of the pillar , and The work floor is characterized in that it is configured to pivot upward from the protruding state.

In the present invention, the work floor is configured to be able to pivot around an axis that extends in the horizontal direction and is parallel to the outer circumferential surface of the column inside the outer circumferential surface of the column. As a result, the horizontally installed protruding work floor can be rotated and flipped upward or moved downward, making it a non-protruding state located inside the outer peripheral surface of the column. Can be done.
When a working floor in a protruding state is turned into a non-protruding state, the locus of the working floor will not be larger than the space in which the working floor in a protruding state is installed in a plan view viewed from the vertical direction. . Therefore, even if temporary materials are provided around the space where the protruding work floor is installed, the rotating work floor will not interfere with the temporary materials. As a result, the space where the protruding work floor is installed can be safely and easily vacated without removing temporary materials or removing the work floor.

Further , the work floor does not pivot downward, and the safety of the work floor can be improved.

Furthermore, the scaffolding according to the present invention may include a handrail portion that is detachable from the work floor.
With this configuration, even if there is a risk that the handrail may interfere with temporary materials or pillars when turning the work floor, the work floor can be turned by removing the handrail.

According to the present invention, the locus of the work floor when turning does not become larger than the space in which the work floor in the protruding state is installed, and the space in which the work floor in the protruding state is installed can be safely and easily used. It can be vacated.

FIG. 2 is a plan view showing an example of a scaffold in a protruding state according to an embodiment of the present invention. FIG. 2 is a side view showing an example of a scaffold in a protruding state according to an embodiment of the present invention, as seen from one side in the Y direction. FIG. 2 is a side view showing an example of a scaffold in a non-protruding state according to an embodiment of the present invention, as seen from one side in the Y direction.

Scaffolding according to an embodiment of the present invention will be described below based on FIGS. 1 to 3.
As shown in FIG. 1, the scaffold 1 according to this embodiment is attached to a pillar 12 provided on the outer periphery of a high-rise building 11 at a construction site of the high-rise building 11.
The pillar 12 is made of a square steel pipe or the like having a rectangular cross-sectional shape. Of the outer circumferential surface of the column 12, portions corresponding to each of the four sides of the rectangular cross-sectional shape of the column 12 are referred to as first to fourth outer circumferential surfaces 13 to 16.
Among the first to fourth outer circumferential surfaces 13 to 16 of the pillar 12, the first outer circumferential surface (outer surface) 13 and the second outer circumferential surface 14 are arranged in parallel, and the third outer circumferential surface 15 and the fourth outer circumferential surface 16 are arranged in parallel. The first outer circumferential surface 13 and the second outer circumferential surface 14 are arranged in parallel, and the third outer circumferential surface 15 and the fourth outer circumferential surface 16 are perpendicular to each other.

The horizontal direction parallel to the first outer circumferential surface 13 and the second outer circumferential surface 14 is defined as the X direction, and the horizontal direction parallel to the third outer circumferential surface 15 and the fourth outer circumferential surface 16 is defined as the Y direction.
The pillar 12 has a first outer circumferential surface 13 disposed on one side in the Y direction, a second outer circumferential surface 14 on the other side in the Y direction, a third outer circumferential surface 15 on one side in the X direction, and The fourth outer circumferential surface 16 is disposed on the other side of the direction.
The pillar 12 is provided at one edge of the high-rise building 11 in the Y direction, with a first outer circumferential surface 13 (outer circumferential surface) on one side in the Y direction facing the outside of the high-rise building 11, and a first outer circumferential surface 13 (outer circumferential surface) on one side in the Y direction facing the outside of the high-rise building 11, and a first outer circumferential surface 13 (outer circumferential surface) on one side in the Y direction facing the outside of the high-rise building 11; The second outer circumferential surface 14 on the side faces the inside of the high-rise building 11.
In the X direction, the side where the third outer peripheral surface 15 is provided with respect to the side where the fourth outer peripheral surface 16 is provided is one side in the X direction, and the side where the third outer peripheral surface 15 is provided is defined as one side in the X direction. On the other hand, the side on which the fourth outer circumferential surface 16 is provided is the other side in the X direction.

In this embodiment, scaffolds 1 and 17 are provided on both sides of the column 12 in the X direction so as to protrude outward from the first outer circumferential surface 13 of the column 12 (to one side in the Y direction). The scaffold provided on one side of the column 12 in the X direction is the scaffold 1 according to the embodiment of the present invention, and the scaffold provided on the other side of the column 12 in the X direction is a conventional scaffold 17. These two scaffolds 1 and 17 are configured to be connectable using a connecting member (not shown) on the outside of the pillar 12.

As shown in FIGS. 1 and 2, the scaffold 1 according to the embodiment of the present invention includes a fixing part 2 that is removably fixed to a piece 18 provided on the third outer circumferential surface 15 of a column 12, and On the other hand, it has a work floor 3 connected to be rotatable around an axis extending in the X direction, and a handrail portion 4 that can be attached to and detached from the work floor 3.
The work floor 3 is arranged on one side (outside) of the fixed part 2 in the Y direction.

The fixed part 2 includes a floor part 21, a locked part 22 which is provided integrally with the floor part 21 and is locked to the piece 18 of the pillar 12, and a locked part 22 which is provided integrally with the floor part 21 and allows the work floor 3 to rotate. A pair of supporting wall portions 23 and 24 are provided.
The floor portion 21 is formed in a plate shape with a horizontal plate surface, and is configured such that the upper surface can be used as a work surface on which a worker stands or materials are placed. The floor portion 21 is arranged on one side of the column 12 in the X direction.
The floor portion 21 has a rectangular shape in plan view, and its dimension in the Y direction is set smaller than the dimension of the column 12 in the Y direction. The outer edge (one side in the Y direction) of the floor part 21 is arranged at a position slightly inside the first outer circumferential surface 13 on one side of the column 12 in the X direction. The inner edge of the column 12 (the other side in the Y direction) is arranged at a position that is outer (one side in the Y direction) than the second outer circumferential surface 14 of the column 12 on one side of the column 12 in the X direction. There is.
The locked portion 22 is attached to a corner on the other side (inner side) in the Y direction of the floor portion 21 on the other side (column 12 side) in the X direction. The locked portion 22 is configured to be detachable from the piece 18 provided on the third outer circumferential surface 15 of the column 12 .
When the locked part 22 is locked to the pillar 12, the fixed part 2 is fixed so that the floor part 21 assumes the above-described attitude and does not move or rotate relative to the pillar 12.

The pair of support wall portions 23 and 24 include a first support wall portion 23 that protrudes upward from one edge of the floor portion 21 in the X direction, and a first support wall portion 23 that protrudes upward from the edge of the other side of the floor portion 21 in the X direction. and a protruding second support wall portion 24. The first support wall portion 23 and the second support wall portion 24 are symmetrical in the Y direction.
The first support wall portion 23 and the second support wall portion 24 have vertical wall surfaces facing in the X direction.
The first support wall portion 23 and the second support wall portion 24 each protrude upward from a portion of the floor portion 21 on the other side in the Y direction.
The first support wall portion 23 and the second support wall portion 24 are arranged inside the first outer circumferential surface 13 of the column 12 (on the other side in the Y direction). The work floor 3 is rotatably connected to the first support wall portion 23 and the second support wall portion 24 . Details will be described later.

The work floor 3 includes a work floor main body part 31, a pair of connecting wall parts 32 and 33 that are provided integrally with the work floor main body part 31 and are rotatably connected to the fixed part 2, and integrally with the work floor main body part 31. It has a plurality of handrail support parts 34 that are provided and can support the handrail part 4.

The work floor main body part 31 is formed into a flat plate shape. The work floor main body 31 is configured to be able to switch between an attitude in which the plate surface is a horizontal plane as shown in FIGS. 1 and 2 and an attitude in which the plate surface is a vertical plane as shown in FIG. 3 by turning. has been done. The work floor main body part 31 is set so that when it is used as the work floor 3, the plate surface is a horizontal plane, and when it is not in use, the plate surface is a vertical plane. In this embodiment, settings are made to manually switch between the above two postures. In the following description of the work floor 3, it is assumed that the work floor 3 is in a posture during use.
In this embodiment, the work floor main body 31 is provided with a side wall 311 that projects upward from the work floor main body 31 at one edge in the Y direction. The side wall portion 311 is provided at a position where it does not interfere with the pair of connecting wall portions 32 and 33.

The pair of connecting walls 32 and 33 include a first connecting wall 32 that protrudes from one edge of the working floor main body 31 in the X direction, and a first connecting wall 32 that protrudes from an edge of the working floor main body 31 on the other side in the X direction. and a second connecting wall portion 33 that projects upward. The first connecting wall portion 32 and the second connecting wall portion 33 are symmetrical in the Y direction.
The first connecting wall portion 32 and the second connecting wall portion 33 have vertical wall surfaces facing in the X direction.
The first connecting wall portion 32 and the second connecting wall portion 33 each protrude upward from the other side portion of the work floor body portion 31 in the Y direction, and are located above the work floor body portion 31 in the Y direction of the work floor body portion 31. It protrudes further toward the other side in the Y direction than the edge on the other side.
A portion of the first connecting wall portion 32 that protrudes to the other side in the Y direction than the work floor body portion 31 is a first protrusion portion 35, and a portion of the second connecting wall portion 33 that protrudes to the other side in the Y direction than the work floor body portion 31. The portion projecting to the side is referred to as a second projecting portion 36.

The first protrusion 35 is arranged to overlap the first support wall 23 in the X direction, and is connected to the first support wall 23 by a first connector 37 . In this embodiment, the first connector 37 is a bolt/nut, and the first protrusion 35 and the first support wall 23 are provided with through holes through which the bolts pass in the Y direction.
The first connecting wall portion 32 and the first supporting wall portion 23 connected by the first connecting member 37 are configured to be relatively rotatable about the shaft 371 of the bolt.

The second protrusion 36 is arranged to overlap the second support wall 24 in the X direction, and is connected to the first support wall 23 by a second connector 38 . In this embodiment, the second connector 38 is a bolt/nut, and the second protrusion 36 and the second support wall 24 are provided with through holes through which the bolts pass in the Y direction.
The second connecting wall portion 33 and the second support wall portion 24 connected by the second connector 38 are configured to be relatively rotatable about the shaft 381 of the bolt.

The bolt of the first connector 37 and the bolt of the second connector 38 are provided so that their respective axes are arranged in the same straight line. The bolt shaft 371 of the first connector 37 and the bolt shaft 381 of the second connector 38 extend in the X direction. The shaft 371 of the bolt of the first connector 37 and the shaft 381 of the bolt of the second connector 38 are defined as the work floor rotation axis 39 (axis).
The work floor rotation shaft 39 is arranged above the floor part 21 and on the other side (inner side) of the first outer circumferential surface 13 of the column 12 in the Y direction.
In the work floor 3, the first connecting wall part 32 and the second connecting wall part 33 pivot around the work floor pivot axis 39 relative to the first supporting wall part 23 and the second supporting wall part 24 of the fixed part 2. As a result, it is configured to rotate around the work floor rotation axis 39 with respect to the fixed part 2.
When rotating the work floor 3 as described above, the handrail portion 4 is removed from the work floor 3.

When in use, the work floor 3 is in a protruding state in which an edge on one side in the Y direction of the work floor main body 31 protrudes further to one side in the Y direction than the first outer circumferential surface 13 of the column 12 . The other edge in the Y direction of the work floor main body 31 on the work floor 3 during use is located on the other side in the Y direction than the first outer circumferential surface 13 of the column 12, and It faces the edge on one side in the Y direction.
The working floor 3 in the protruding state is continuously arranged so that the upper surface of the working floor main body part 31 is at the same height as the upper surface of the floor part 21 of the fixed part 2. The upper surface of the work floor main body 31 and the upper surface of the floor section 21 serve as work surfaces.

When the work floor 3 is rotated from the protruding state about the work floor rotation axis 39 so that one edge of the work floor main body 31 in the Y direction moves upward, the plate surface of the work floor main body 31 is rotated. It will be in an upright state with a vertical plane facing the Y direction.
The working floor 3 in an upright state is arranged above the floor part 21 and does not protrude outward (to one side in the Y direction) from the first outer circumferential surface 13 of the column 12.
The work floor 3 according to this embodiment can be placed in an upright state when not in use. In this embodiment, the state in which the work floor 3 stands up is the non-protruding state.
The work floor 3 is rotated around the work floor rotation axis 39 so that the upper edge of the work floor main body 31 in the non-protruding state moves downward, and the plate surface of the work floor main body 31 is rotated. When it comes to a horizontal surface, it becomes protruding.

Although not shown, the scaffold 1 is provided with a first locking portion that locks the work floor 3 in a protruding state and a second locking portion that locks the work floor 3 in a non-protruding state.
Furthermore, the scaffold 1 is provided with a stopper 5 (see FIG. 2) that prevents the protruding work floor 3 from pivoting downward about the work floor pivot shaft 39 with respect to the fixed part 2. It is provided. The stopper 5 is, for example, a member provided below the floor section 21 so as to protrude outward (on one side in the Y direction) from the floor section 21, and when the work floor 3 tries to turn downward, the stopper 5 stops the work floor. 3 to prevent the work floor 3 from pivoting downward.

As shown in FIGS. 1 and 2, the handrail portion 4 is manufactured by processing a metal pipe or the like. The handrail portion 4 includes a plurality of handrail vertical members 41 each extending in the vertical direction and provided along the outer periphery of the work floor main body portion 31, and a handrail horizontal member 42 spanning between the upper end portions of adjacent handrail vertical members 41. (See FIG. 1). In the handrail portion 4, the lower side of the handrail vertical member 41 is supported by the handrail support portion 34.

The handrail support part 34 is formed into a cylindrical shape into which the lower side of the handrail vertical member 41 can be inserted. On the work floor 3 in the protruding state, when the lower side of the handrail vertical member 41 is inserted into the handrail support part 34, the handrail vertical member 41 is erected, and the handrail horizontal member 42 is installed, the handrail horizontal member 42 is moved to the handrail. It can be used as
The handrail portion 4 is configured so that it can be removed from the work floor 3 by removing the handrail vertical member 41 from the handrail support portion 34. The handrail portion 4 may be provided with a locking mechanism that locks the handrail vertical member 41 in the inserted state in the handrail support portion 34.

Next, the functions and effects of the scaffold 1 according to the present embodiment described above will be explained using the drawings.
In the scaffold 1 according to the present embodiment described above, the work floor 3 is centered on the work floor rotation axis 39 that extends in the horizontal direction and is parallel to the first outer peripheral surface 13 of the pillar 12 on the inner side of the first outer peripheral surface 13 of the pillar 12. It is configured so that it can be rotated. Thereby, by turning the horizontally installed work floor 3 in a protruding state and flipping it upward, it can be placed in a non-protruding state at a position inside the outer circumferential surface of the column 12.
When the working floor 3 in the protruding state is flipped upward and turned into a non-protruding state, the trajectory of the working floor 3 is such that the working floor 3 in the protruding state is installed in a plan view from the vertical direction. It can never be larger than the space. Therefore, even if temporary materials are provided around the space where the protruding work floor 3 is installed, the rotating work floor 3 will not interfere with the temporary materials. As a result, the space where the protruding work floor 3 is installed can be safely and easily vacated without removing temporary materials or removing the work floor 3.

Furthermore, in the scaffold 1 according to the present embodiment, the work floor 3 is configured to pivot upward from the protruding state, so the work floor 3 does not pivot downward, improving the safety of the work floor 3. can be done.

Furthermore, since the scaffolding 1 according to the present embodiment has the handrail portion 4 that is detachable from the work floor 3, there is no possibility that the handrail portion 4 may interfere with temporary materials or pillars 12 when the work floor 3 is turned. Even in such a case, the work floor 3 can be rotated by removing the handrail portion 4.

Although the embodiments of the scaffold according to the present invention have been described above, the present invention is not limited to the above embodiments, and can be modified as appropriate without departing from the spirit thereof.
For example, in the above embodiment, the scaffold 1 according to the embodiment of the present invention is installed on one side of the column 12 in the X direction, and the conventional scaffold 17 is installed on the other side of the column 12 in the Y direction. The scaffold 1 according to the embodiment of the present invention may be installed on each side of the scaffold 12, and may be configured to be connectable.

Further, in the above embodiment, the scaffold 1 has the fixed part 2 fixed to the pillar 12, and the work floor 3 is connected to the fixed part 2 so as to be pivotable about the work floor rotation axis 39. The work floor 3 may be directly connected to the column 12 so as to be pivotable about the work floor pivot shaft 39.

Further, in the above embodiment, the work floor 3 is configured to pivot upward from the protruding state and enter the erect non-protruding state, thereby freeing up a space where the work floor 3 in the protruding state is installed. . On the other hand, the work floor 3 may be configured to pivot downward from the protruding state to a hanging, non-protruding state, thereby freeing up a space where the protruding work floor 3 is installed. In such a case, the scaffold 1 may not be provided with the stopper 5 as in the above embodiment.

Further, in the embodiment described above, the scaffold 1 is provided with the handrail portion 4 that is detachable from the work floor 3, but the handrail portion 4 may not be provided, and the handrail portion 4 may not be provided and may interfere with the turning of the work floor 3. If there is no such thing, it may be fixed to the work floor 3. Moreover, when the handrail part 4 is provided in the scaffold 1, the form of the handrail part 4 may be other than the above.

1 Scaffolding 2 Fixed part 3 Working floor 4 Handrail part 5 Stopper 12 Pillar 13 First outer peripheral surface (outer peripheral surface)
39 Work floor rotation axis (axis)

Claims (2)

A scaffolding having a working floor attached to a column having a rectangular cross section and used in a protruding state that protrudes beyond a first outer circumferential surface that is one outer circumferential surface of the column,
The work floor is configured to be able to pivot around a work floor pivot axis extending in a horizontal direction parallel to the first outer circumferential surface in a plane perpendicular to the first outer circumferential surface of the column ,
The scaffolding is characterized in that the work floor is configured to pivot upward from the protruding state. The scaffold according to claim 1, further comprising a handrail portion that is detachable from the work floor.

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