JP7385925B2 - temporary scaffolding - Google Patents

Description

The present invention relates to a temporary scaffold (assembly scaffold) constructed at a construction or civil engineering work site.

At construction or civil engineering construction sites, as shown in FIGS. 9A and 9B, for example, temporary scaffolding 80 is constructed around a building that is under construction to form a work floor for workers.
This temporary scaffolding 80 uses a large number of support pipes 82 provided with connection mechanisms 81. Specifically, in the connection mechanism 81, the first to fourth latches 83 to 86 each having a U-shaped cross section are arranged at 0 degrees, 90 degrees, 180 degrees, and the circumference of a pipe material 87 having a circular cross section. It is fixed at a 270 degree position, and the first and third latching fittings 83 and 85 are arranged at lower positions than the second and fourth latching fittings 84 and 86 (for example, see Patent Document 1). ). In this way, by attaching the first to fourth hooks 83 to 86 at different height positions of the support pipe 82, sufficient strength can be obtained.

The temporary scaffolding 80 is assembled by arranging a pair of support pipes 82 facing each other with a distance a, and having a distance b (<a) along the object on which the support pipes 82 are constructed. Arrange multiple pairs. At this time, a short horizontal pipe 88 is arranged between the pair of support pipes 82 with an interval a, and the wedge members provided at both longitudinal ends of the horizontal pipe 88 are connected to the first , a long horizontal pipe 89 is fitted into the third latching fittings 83 and 85, and is arranged between adjacent support pipes 82 with an interval b, so that both ends of the horizontal pipe 89 in the longitudinal direction The wedge members provided at the holder are fitted into the second and fourth latching fittings 84 and 86 in the upper position to connect the respective support pipes 82.
Then, two long scaffolding boards (scaffolding members) 90 are hung between the horizontal pipes 88 that are arranged opposite to each other.

Japanese Patent Application Publication No. 2006-16856

The above is an assembly in a region where two scaffold boards 90 are set as one set and a plurality of sets of scaffold boards 90 are arranged linearly in the longitudinal direction when viewed from above. In a region where a and a set of scaffolding boards b are arranged in an L-shape in plan view, they are assembled as follows.
At the corner side end of the L-shaped area of the scaffolding board a, a wedge material is fitted into the first and third latches 83 and 85 located below the support pipes 82 facing each other with a distance a between them. It is hung on a short horizontal pipe 88. On the other hand, the corner side end of the L-shaped area of the scaffold board b is connected to an auxiliary support pipe 91 (support pipe 82) disposed at an intermediate position between the support support pipes 82 facing each other with an interval b (>a). (similar configuration) and a short horizontal pipe 88 in which wedge members are fitted into second and fourth latching fittings 84 and 86 located above the support pipe 82 on the corner side.
For this reason, there was a problem in that the height positions of the adjacent scaffolding board a and scaffolding board b were different (a difference in level occurred), making it difficult for the worker to walk.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a temporary scaffold with a simple configuration in which the height positions of adjacent scaffold members can be adjusted.

A temporary scaffolding according to the present invention that achieves the above purpose includes a plurality of elongated scaffolding members provided with hook portions at both ends in the longitudinal direction;
a plurality of horizontal pipes that are engageable with the hook portions and that are provided with square tube members at both ends;
The first to fourth latches into which the notches of the square tube material can be fitted from the sides are located at 0 degrees, 90 degrees, 180 degrees, and 270 degrees of the circumference of the pipe material having a circular cross section. a plurality of support pipes, each of which is fixed, and in which the first and third latching fittings are arranged at a lower position than the second and fourth latching fittings;
The notches of the square tubular material provided at both ends of the horizontal pipe fit into the first and third latching fittings or the second and fourth latching fittings to connect the horizontal pipe and the In a temporary scaffolding that has a wedge material that connects with a support pipe,
Among the plurality of scaffold members, in a region where adjacent scaffold members A and B are arranged in an L-shape when viewed from above,
The scaffolding member A is attached to the horizontal pipe in which the notches of the square tubular material provided at both ends are fitted into the first and third hooks located below the opposing support pipes, engaging the latch hook portion;
The scaffolding member B is attached to the horizontal pipe in which the notches of the square tubular material provided at both ends are fitted into the second and fourth hooks located above the opposing support pipes, engaging the latch hook portion;
A pipe of the horizontal pipe having the square tube material in which the notch is fitted into the first and third latching fittings of the opposing support pipes disposed at the corner of the area. A height adjustment mechanism was provided to raise the height of the main body and adjust the height of adjacent scaffold members A and B.

In the temporary scaffolding according to the present invention, the height adjustment mechanism includes:
The rectangular tubular material has an extending portion provided on the pipe body side and extending upwardly, and a longitudinal end of the pipe body is fixed to the extending portion. Board material and
It is preferable to have a pipe receiving part attached to the plate material and supporting the pipe main body fixed to the plate material from below.

In the skirting board device for temporary scaffolding according to the present invention, the scaffolding member A can be arranged tilting upward toward the corner of the area.

The temporary scaffolding according to the present invention is a region where adjacent scaffolding members A and B are arranged in an L-shape when viewed from above among a plurality of scaffolding members, and opposed support pipes are arranged at corners of the region. Since the height adjustment mechanism is provided in the square tube material in which the notches are fitted into the first and third latching metal fittings provided at the lower position of the horizontal pipe body of the horizontal pipe having the square tube material, By raising the height position, the height positions of adjacent scaffold members A and B can be adjusted (aligned).
As a result, it is possible to construct a temporary scaffold that has a simple configuration, is easy for workers to walk on, and can improve workability.

(A) and (B) are a front view and a side view, respectively, of a temporary scaffolding according to an embodiment of the present invention. FIG. 2 is an explanatory plan view of the temporary scaffolding. It is an explanatory view of the use state of the horizontal pipe used for the same temporary scaffolding. It is a perspective view of the height adjustment mechanism provided in the same horizontal pipe. FIG. 3 is a perspective view of the same height adjustment mechanism as seen from the back. It is a front view of the same height adjustment mechanism. It is a side view of the same height adjustment mechanism. It is a bottom view of the same height adjustment mechanism. (A) and (B) are a front view and a side view, respectively, of a temporary scaffolding according to a conventional example.

Next, embodiments embodying the present invention will be described with reference to the attached drawings to provide an understanding of the present invention.
As shown in FIGS. 1(A), 1(B), and 2, a temporary scaffold 10 according to an embodiment of the present invention is constructed at a construction or civil engineering site, for example, and is placed on the ground. Among the plurality of long scaffolding boards (an example of a scaffolding member) 12 arranged using a plurality of support pipes 11 erected, in plan view, adjacent scaffolding boards 12 (i.e., scaffolding board A , B) are arranged in an L-shape, and the height position can be adjusted.
This will be explained in detail below.

The support pipe 11 has a pipe material 13 with a circular cross section, and on its outer circumference, first to fourth hooks 14 to 17 each having a U-shaped cross section (same shape) are attached at 0 degrees and 90 degrees. , 180 degrees, and 270 degrees (front, rear, left, and right of the pipe material 13 whose axis is vertically disposed), respectively. The first and third latching fittings 14 and 16 are opposite to each other with the pipe material 13 at the center, and are at the same height, and the second and fourth latching fittings 15 and 17 are opposite to each other with the pipe material 13 at the center. The first and third latching fittings 14 and 16 are located at the same height position below the second and fourth latching fittings 15 and 17, respectively. They are arranged (placed on different levels).

When arranging a plurality of scaffolding boards 12 in a longitudinal direction in a straight line when viewed from above (a pair of adjacent scaffolding boards 12 are arranged in a straight line when viewed from above), the paired support pipes 11 are set in advance. For example, a plurality of pairs of support pipes 11 are arranged at predetermined intervals b along the object to be constructed.
In the support pipes 11 placed at each vertex position of a rectangle with a short side a and a long side b, pairs of support pipes 11 arranged at an interval a are connected to the short lengths arranged between the support pipes 11. Adjacent support pipes 11 that are connected by a pipe (an example of a horizontal pipe) 18 and arranged at an interval b are connected by a long pipe (an example of a horizontal pipe) 19 that is arranged between the support pipes 11. be done. Thus, the interval a is narrower than the interval b (for example, b=2a), and the interval b is, for example, 600 mm or more and 1800 mm or less (for example, 600 mm, 900 mm, 1200 mm, 1500 mm, 1800 mm).

Specifically, a wedge member 20 (same configuration as a wedge member 27 described later) and a square tube member 26 are provided at both ends of the short pipe 18 in the longitudinal direction, and the notch 33 of the square tube member 26 is The short pipe 18 and the support pipe 11 can be connected by fitting the wedge material 20 from above into the first and third latching metal fittings 14 and 16 in the lower position from the side.
Furthermore, a wedge member 20 (having the same configuration as a wedge member 27 described later) and a square tube member 26 are provided at both longitudinal ends of the long pipe 19, and the notch 33 of this square tube member 26 is located at the upper position. The long pipe 19 and the support pipe 11 can be connected by fitting the wedge material 20 from above into the second and fourth latching fittings 15 and 17 from the side.

A set of two (or one) scaffolding boards 12 each having hooks 12a that can be engaged with the short pipes 18 on both ends in the longitudinal direction are arranged to face each other. Pass it to 18.
On the other hand, as shown in FIGS. 1(A), (B), and 2, in a region where a pair of adjacent scaffolding boards A and a pair of scaffolding boards B are arranged in an L-shape when viewed from above, , construct as below.
The support pipes 11 are arranged facing each other at a preset interval a, and a plurality of pairs (three pairs in this case) of the support pipes 11 that are paired with each other are arranged at a preset interval b. Further, adjacent support pipes 11 on one side (the side connecting the scaffolding board B: the back right side in FIG. 1(A), the upper side in FIG. 2) are arranged at the corner side of the L-shaped area at a distance b. An auxiliary support pipe (an example of a support pipe) 21 having the same configuration as this support pipe 11 is arranged between the support support pipes (substantially in the middle position).

Here, as shown in FIGS. 1 to 3, the scaffolding board A has a rectangular tube member 26 attached to the first and third hooks 14 and 16 located below the two pairs of opposing support pipes 11. The short pipe 18 into which the notch 33 is fitted is connected to the short pipe 23 (an example of a horizontal pipe: placed on the corner side of an L-shaped area) by engaging the hook portion 12a.
In addition, the scaffolding board B is attached to second and fourth hooks 15 and 17 located above the auxiliary support pipe 21 and the opposing support pipe 11 (arranged on the corner side of the area). A short pipe (an example of a horizontal pipe) 22 into which a notch 33 of a square tube material 26 is fitted, and a square tube material are attached to the second and fourth hooks 15 and 17 located above the opposing support pipe 11. The latching hook portion 12a is engaged with a short pipe 18 into which 26 notches 33 are fitted (arranged to face the short pipe 22).

In addition, on the scaffolding board A side, the other opposing support pipes 11 arranged at the interval b (the right front side in FIG. 1(A), the lower side in FIG. 2) are It is connected by a long pipe 19 in which a notch 33 of a square tube member 26 is fitted into the latching fittings 15 and 17. Further, the auxiliary support pipe 21 and the other support pipe 11 disposed on the opposite side of the above-described support pipe 11 are connected to the second and fourth latching fittings 15 and 17 in the upper position. They are connected by a short pipe 22 into which a notch 33 of a square tube member 26 is fitted.
On the scaffold board B side, the support pipe 11 located on the corner side of the L-shaped area and the support pipe 11 facing this support pipe 11 with an interval b are also connected to the support support pipe 21. , this auxiliary support support pipe 21 and the support support pipe 11 which is disposed opposite to each other with an interval b are connected to the first and third latching fittings 14 and 16 located at the lower position through the notches 33 of the square tube member 26. They are connected by a fitted long pipe 19.

The square tube material 26 described above is made of steel (including stainless steel), and as shown in FIGS. 4 to 8, it is a regular quadrilateral (i.e., a rectangle with rounded corners) in plan view. Before connecting the side plate parts 29, 30 arranged at the same interval as the width of the first latch fitting 14 (or the second to fourth latch fittings 15 to 16, the same applies hereinafter) and the side plate parts 29, 30. It has a plate part 31 and a rear plate part 32. A cutout 33 is formed in the center of the front side of the front plate part 31 and the side plate parts 29, 30, and the first latch fitting 14 is fitted into the cutout 33 with a small gap, and then The upper parts of the front plate part 31 and the side plate parts 29 and 30 are placed. Note that the inclination angle of the groove bottom side 34 of the U-shaped notch 33 when viewed from the side is determined by the protruding piece 14a of the first latch 14 (or the third latch 16), as shown in FIG. The angle of inclination is the same as that of the protruding piece 16a or the protruding pieces of the second and fourth latching fittings 15 and 17.

A protrusion 35 (preferably a protrusion length of 1 to 3 mm) is formed on the front side of the square tube member 26 (that is, the upper front side of the notch 33), which partially fits into the upper part of the first latch 14. When the first latching fitting 14 is inserted into the notch 33 of the square tube 26, the square tube 26 is prevented from moving laterally.
Contact parts 32a and 32b are formed in the center of the rear plate part 32 of the square tube member 26, and the tips of the contact parts 32a and 32b are sloped and can come into contact with the protruding piece 14a of the first latching fitting 14. However, the protruding piece 14a of the first latching member 14 may directly contact the back plate portion 32 of the square tube member 26 without providing a contact portion.

The wedge material 27 that connects the short pipe 23 on which the scaffolding board A is hung and the support pipe 11 on the corner side of the L-shaped area is made of steel (including stainless steel), and is made of steel (including stainless steel). A gap between the square tube member 26 (strictly speaking, the front plate portion 31 of the square tube member 26) attached to the latch 14 (or the third latch 16, the same applies hereinafter) and the first latch 14 A long through hole 36 is provided in the center.
This wedge member 27 is fitted into the square tube member 26 with a gap, and has a “dog”-shaped portion 37 that becomes thinner downward and has a lower portion bent toward the rear. Then, it is inserted through both the first latching member 14 and the square tube member 26, and the wedge member 27 is lowered to fasten the first latching member 14 and the square tube member 26.

The holding fitting 28 provided across the upper part of the square tube member 26 is made of steel (including stainless steel), and is provided with a gap (loosely fitted) in the through hole 36 of the wedge member 27. ) is provided. This prevents the wedge material 27 from falling off the square tube material 26, and also allows the wedge material 27 to change from the unfitted state (tilted state or horizontal state) to the fitted state (vertical state: see FIGS. 1 and 3 to 8). The angle and position can be changed smoothly.
This holding fitting 28 has an L-shape or a U-shape, and both ends thereof are fixed by welding to the upper ends of the front plate part 31 and the rear plate part 32, or have an integral structure.

The square tube member 26 in which the notches 33 are fitted into the first and third hooks 14 and 16 of the opposing support pipes 11 disposed at the corners of the L-shaped area described above has a shape shown in FIG. A height adjustment mechanism 24 shown in FIGS. 3 to 8 is provided.
The height adjustment mechanism 24 is made of steel material (including stainless steel) and raises the height position of the pipe body 25 of the short pipe 23 having a rectangular tube material 26, so that it is aligned with a pair of adjacent scaffolding boards A. This is to adjust the height position with respect to the set of scaffolding boards B. Note that adjusting the height position refers to the longitudinal ends of a set of scaffolding boards A (corner side ends of the L-shaped area) and the longitudinal ends of a set of scaffolding boards B (scaffolding board It means to match (make the same height position) with the A side end), but it may deviate within the range of ±20% (preferably ±10%, more preferably ±5%), for example. .

The height adjustment mechanism 24 includes a plate member 38 provided on the pipe main body 25 side of the square tube member 26.
The plate material 38 is attached to an extending portion 39 extending upward on the pipe body 25 side of the rear plate portion 32 so that the height positions of the ends of the adjacent scaffolding plates A and B match. The longitudinal ends of 25 are mounted and fixed. The length of the extension portion 39 that protrudes from the upper end of the square tube member 26 is, for example, equal to or longer than the height of the second and fourth hooks 15 and 17.
Guide portions 39a and 39b protruding toward the sides of the wedge 27 are provided on both sides of the extended portion 39 of the plate 38 to prevent the wedge 27 from falling when it is not inserted. Note that the distance between the opposing guide portions 39a and 39b gradually becomes narrower (tapered) toward the front.

The height adjustment mechanism 24 has a pipe receiving portion 40 provided on the pipe body 25 side of the square tube member 26.
The pipe receiving part 40 has a right triangular shape when viewed from the side, and one side excluding the oblique side is provided on the plate 38, and the other side is attached to the lower end of the pipe body 25, and is attached to the plate 38. The fixed pipe main body 25 is supported from below.
In addition, the short pipes 18 and 22 and the long pipe 19 are directly attached to the rectangular tube material 26 at both ends in the longitudinal direction of the pipe body without the plate material 38 being attached and fixed to the square tube material 26. It is connected to the support pipe 11 via 20. The installation height position of this pipe body is approximately the same as the height position of the notch 33.

As shown in FIGS. 1(A) and 1(B), the temporary scaffolding 10 described above is assembled by arranging the pair of support pipes 11 facing each other at a preset interval a, and For example, a plurality of pairs of pipes 11 are arranged at preset intervals b along the object to be constructed. At this time, pairs of support pipes 11 arranged at a distance a are connected by a short pipe 18, and adjacent support pipes 11 arranged at a distance b are connected by a long pipe 19.
Then, the scaffolding board 12 is placed over the adjacent short pipes 18.

In addition, among the plurality of scaffold boards 12, in a region where a set of adjacent scaffold boards A and a set of scaffold boards B are arranged in an L-shape when viewed from above, the auxiliary support pipe 21 is used. Adjacent support pipes 11 and auxiliary support pipes 21 are connected by horizontal pipes 22. Further, the opposing support pipes 11 arranged at the corners of the L-shaped area are connected not by the short pipe 18 described above but by a short pipe 23 provided with a height adjustment mechanism 24.
As a result, the scaffolding board A is tilted upward toward the corner of the area, and the height positions of the ends of the adjacent scaffolding boards A and B can be aligned (adjusted).

To connect the above-described support pipes 11 and auxiliary support pipes 21, hold the short pipes 18, 22, 23 and the long pipe 19 horizontally, and insert the notches 33 of the square tube material 26 into the first to fourth positions. Attach it to any one of the latches 14 to 17.
In this case, since a locking groove 41 is provided at the upper part of the back side of the notch 33, the first to fourth locking fittings 14 to 17 fit into the notch 33 to the back side. . At this time, the wedge members 20 and 27 have come out of the rectangular tube member 26, and the holding fitting 28 is located on one side of the through hole 36 and is in an inclined state (or approximately horizontal state).

Next, the wedge members 20 and 27 that are now in an inclined state are set upright, and the wedge members 20 and 27 are inserted into the gaps between the first to fourth latching fittings 14 to 17 and the square tube member 26, and finally the hammer Hit the heads of the wedges 20, 27 with a hammer or the like to make the lower ends of the wedges 20, 27 protrude from the lower end of the square tube 26, and firmly attach the square tube 26 to the first to fourth latches 14 to 17. Fixed to. In this state, the lower portions of the wedges 20, 27 are bent backwards in a dogleg shape, so the wedges 20, 27 cannot be easily removed.
In addition, in order to remove the square tube member 26 from the first to fourth hooks 14 to 17, the lower ends of the wedge members 20 and 27 are struck upward with a hammer or the like.

Although the present invention has been described above with reference to the embodiments, the present invention is not limited to the configuration described in the embodiments described above, and the matters described in the claims are as follows. It also includes other embodiments and modifications that may be considered within the scope. For example, a case where the temporary scaffolding of the present invention is constructed by combining some or all of the above-described embodiments and modifications is also within the scope of the present invention.
In the embodiment described above, in a region where adjacent scaffolding members A and B are arranged in an L-shape when viewed from above, a case has been described in which the scaffolding board A is tilted upward toward the corner of the region. However, the height position of the scaffold board A can also be adjusted to the height position of the scaffold board B with the scaffold board A placed horizontally. Specifically, a horizontal pipe provided with the above-mentioned height adjustment mechanism is used on the horizontal pipe on the opposite side of the corner of the above-mentioned area over which the scaffold board A is spanned.

10: Temporary scaffolding, 11: Support pipe, 12: Scaffolding board (scaffolding member), 12a: Latching hook part, 13: Pipe material, 14: First latch fitting, 14a: Projecting piece, 15: Second Latching metal fitting, 16: Third latch fitting, 16a: Projecting piece, 17: Fourth latch fitting, 18: Short pipe (horizontal pipe), 19: Long pipe (horizontal pipe), 20: Wedge material, 21: Auxiliary support pipe (support pipe), 22, 23: Short pipe (horizontal pipe), 24: Height adjustment mechanism, 25: Pipe body, 26: Square tube material, 27: Wedge material, 28 : Holding metal fittings, 29, 30: Side plate part, 31: Front plate part, 32: Back plate part, 32a, 32b: Contact part, 33: Notch, 34: Groove base, 35: Projection part, 36: Through hole , 37: "dog" shaped part, 38: plate material, 39: extension part, 39a, 39b: guide part, 40: pipe receiving part, 41: locking groove

Claims (2)

a plurality of elongated scaffolding members provided with hook portions at both ends in the longitudinal direction;
a plurality of horizontal pipes that are engageable with the hook portions and that are provided with square tube members at both ends;
The first to fourth latches into which the notches of the square tube material can be fitted from the sides are located at 0 degrees, 90 degrees, 180 degrees, and 270 degrees of the circumference of the pipe material having a circular cross section. a plurality of support pipes, each of which is fixed, and in which the first and third latching fittings are arranged at a lower position than the second and fourth latching fittings;
The notches of the square tubular material provided at both ends of the horizontal pipe fit into the first and third latching fittings or the second and fourth latching fittings to connect the horizontal pipe and the In a temporary scaffolding that has a wedge material that connects with a support pipe,
Among the plurality of scaffold members, in a region where adjacent scaffold members A and B are arranged in an L-shape when viewed from above,
The scaffolding member A is attached to the horizontal pipe in which the notches of the square tubular material provided at both ends are fitted into the first and third hooks located below the opposing support pipes, engaging the latch hook portion;
The scaffolding member B is attached to the horizontal pipe in which the notches of the square tubular material provided at both ends are fitted into the second and fourth hooks located above the opposing support pipes, engaging the latch hook portion;
A pipe of the horizontal pipe having the square tube material in which the notch is fitted into the first and third latching fittings of the opposing support pipes disposed at the corner of the area. A height adjustment mechanism is provided to raise the height position of the main body and adjust the height positions of adjacent scaffold members A and B , so that the scaffold member A is tilted upward toward the corner of the area. Temporary scaffolding characterized by: The temporary scaffolding according to claim 1, wherein the height adjustment mechanism includes:
The rectangular tubular material has an extending portion provided on the pipe body side and extending upwardly, and a longitudinal end of the pipe body is fixed to the extending portion. Board material and
A temporary scaffolding comprising: a pipe receiving part attached to the plate material and supporting the pipe main body fixed to the plate material from below.

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