JP7156790B2 - Reinforcement and Temporary Scaffolding - Google Patents

Description

TECHNICAL FIELD The present invention relates to a reinforcing material for temporary scaffolding and a temporary scaffold having the same.

2. Description of the Related Art Conventionally, various temporary scaffolds such as wedge binding scaffolds and form shorings have been used at construction sites and the like.

12 and 13 are diagrams showing an example of a wedge binding scaffold. FIG. 12 is a schematic diagram of the wedge binding type scaffolding viewed from the span direction, and FIG. 13 is a diagram of a part of the wedge binding type scaffolding viewed from the girder direction.

12 and 13, a wedge binding type scaffolding 10 (hereinafter abbreviated as scaffolding 10) includes a plurality of tubular supports 12 arranged at intervals in the girder direction and the span direction, and a girder row. A plurality of cylindrical connecting members 14 that connect the columns 12 together in the direction and a plurality of cylindrical connecting members 16 that connect the columns 12 together in the inter-beam direction are provided. In addition, a plurality of cloth frames 17 with floors are provided so as to connect the tethers 16 together in the girder direction.

Each of the pillars 12 is configured using, for example, a plurality of metal pipes. A plurality of connecting fittings 18 are attached to each support 12 at intervals in the axial direction (vertical direction) of the support 12 . Each connecting fitting 18 is welded to the strut 12, for example. Each of the plurality of connecting members 14 and the plurality of connecting members 16 is configured using a metal pipe. Both ends of the tether 14 and both ends of the tether 16 are respectively connected to the connecting metal fittings 18 using wedges 20 (see FIG. 13).

Conventionally, techniques for improving the strength of scaffolding as described above have been proposed.

For example, Patent Literature 1 discloses a reinforcing device for a scaffold construct. The reinforcing device disclosed in Patent Document 1 is configured to support from below a horizontal member that connects a pair of support members facing each other in the gable direction (inter-beam direction). Specifically, the stiffening device of US Pat. A pair of brace members are provided so as to extend obliquely downward from the horizontal member so that the distance between them in the gable direction increases. The upper end of each brace member is fixed to the horizontal member via fixing means, and the lower end of each brace member is fixed to the support member via fixing means.

Patent Literature 1 describes that a temporary scaffolding can be reinforced by supporting horizontal members from below with the reinforcing device.

JP 2013-194461 A

However, in the reinforcing device of Patent Document 1, as described above, a pair of brace members are provided so as to extend obliquely downward from the horizontal member. Therefore, when the worker moves on the temporary scaffolding, there is a problem that the worker's head tends to come into contact with the brace member. That is, there is a problem that the passage for the worker becomes narrow in the temporary scaffolding.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a reinforcing member and a temporary scaffold including the reinforcing member that can improve the strength of the temporary scaffolding while suppressing the movement of workers.

The gist of the present invention is the following reinforcing material and temporary scaffolding.

(1) A plurality of columns extending in the vertical direction, a plurality of connecting fittings for wedge-binding that are fixed at intervals in the vertical direction on each of the plurality of columns, and a plurality of connectors that connect the plurality of columns in the horizontal direction. A reinforcement for use in temporary scaffolding with tethers, comprising:
a main body extending linearly;
a first metal fitting that is fixed to the main body and attachable to the connecting metal fitting of the support;
a second metal fitting that is fixed to the main body portion at a position apart from the first metal fitting in the axial direction of the main body portion and that can be attached to a connecting metal fitting of the support;
with
At least one of the first metal fitting and the second metal fitting is configured to be fixable to the connecting metal fitting of the strut by a wedge,
The first metal fitting and the second metal fitting are reinforcing members configured so that the main body can be attached to the support so that the main body extends vertically along with the support.

(2) one of the first metal fitting and the second metal fitting is configured to be fixable to the connecting metal fitting of the support by a wedge;
The reinforcing member according to (1) above, wherein the other of the first metal fitting and the second metal fitting has a hook shape that can be locked to the connecting metal fitting of the support.

(3) a support portion capable of supporting the connecting material from below; and an adjustment portion connecting the support portion and one end portion of the body portion in the axial direction and adjusting the position of the support portion in the axial direction. The reinforcing material according to (1) or (2) above, further comprising:

(4) The reinforcing member according to (3) above, wherein the supporting portion does not protrude above the connecting material when supporting the lower surface of the connecting material.

(5) A plurality of columns extending in the vertical direction, a plurality of connecting fittings for wedge binding that are fixed to each of the plurality of columns at intervals in the vertical direction, and a plurality of connectors that connect the plurality of columns in the horizontal direction. and a reinforcing member according to any one of the above (1) to (4) attached to at least one of the plurality of pillars.

ADVANTAGE OF THE INVENTION According to this invention, the intensity|strength of a temporary scaffolding can be improved, suppressing the obstruction of a worker's movement.

FIG. 1 is a diagram showing part of a temporary scaffolding according to one embodiment of the present invention. FIG. 2 is a diagram showing a stiffener according to one embodiment of the invention. FIG. 3 is a diagram for explaining a method of attaching the reinforcing material. FIG. 4 is a diagram for explaining a method of attaching the reinforcing material. FIG. 5 is a diagram for explaining a method of attaching the reinforcing material. FIG. 6 is a diagram for explaining a method of attaching the reinforcing member. FIG. 7 is a diagram for explaining a method of attaching the reinforcing material. 8 is a cross-sectional view taken along the line AA of FIG. 7. FIG. FIG. 9 is a diagram showing a modified example of the reinforcing material. FIG. 10 is a diagram showing another example of the method of supporting the connecting material. FIG. 11 is a diagram showing another example of the adjustment unit. FIG. 12 is a diagram showing an example of a wedge binding scaffold. FIG. 13 is a diagram showing an example of a wedge binding scaffold.

A reinforcing member and a temporary scaffold including the reinforcing member according to an embodiment of the present invention will be described below.

FIG. 1 is a diagram showing part of a temporary scaffolding according to one embodiment of the present invention. Referring to FIG. 1, a temporary scaffold 100 according to this embodiment includes a scaffold body 30 and a plurality of reinforcing members 32. As shown in FIG. The scaffolding main body 30 has the same configuration as the scaffolding 10 described with reference to FIGS. 12 and 13, so detailed description thereof will be omitted.

2A and 2B are views showing the reinforcing member 32, where (a) is a front view and (b) is a right side view. Referring to FIG. 2, the reinforcing member 32 includes a linearly extending main body portion 34, a first metal fitting 36 fixed to the main body portion 34, a second metal fitting 38 fixed to the main body portion 34, and a substantially U-shaped member when viewed from the side. A supporting portion 40 having a shape and an adjusting portion 42 connecting one end portion of the body portion 34 in the axial direction and the supporting portion 40 and adjusting the position of the supporting portion 40 are provided.

The body portion 34 has, for example, a circular tube shape or a rectangular tube shape. The body portion 34 is made of, for example, a metal material such as steel.

The first metal fitting 36 is provided on one side of the center of the body portion 34 in the axial direction of the body portion 34 , and the second metal fitting 38 is provided on the other side of the center of the body portion 34 in the axial direction of the body portion 34 . is provided in The first metal fitting 36 and the second metal fitting 38 are configured so that the main body portion 34 can be attached to the support column 12 so that the main body portion 34 extends vertically along with the support column 12 . In this embodiment, the first metal fitting 36 and the second metal fitting 38 are provided so as to protrude from the main body portion 34 in a direction perpendicular to the axial direction of the main body portion 34 . In addition, below, one side in the axial direction of the main body portion 34 is referred to as upper side, and the other side is referred to as lower side. A direction perpendicular to the up-down direction is defined as a horizontal direction.

In this embodiment, the first fitting 36 is configured to be fixed to the connecting fitting 18 of the scaffold body 30 by a wedge 44 (see FIG. 1). The first metal fitting 36 is welded to the body portion 34 . The connecting fittings 18, the first fittings 36, and the wedges 44 may be known fittings and wedges that are used in conventional wedge binding scaffolding and formwork shoring. omitted.

1 and 2, the second metal fitting 38 is formed in a hook shape so as to be able to engage with the connecting metal fitting 18 of the scaffold body 30. As shown in FIG. The second metal fitting 38 is welded to the body portion 34 . Referring to FIG. 2(b), in the present embodiment, the second metal fitting 38 includes a first portion 38a projecting obliquely upward from the main body portion 34, and a distal end portion of the first portion 38a extending away from the main body portion 34. A second portion 38b extending horizontally from the second portion 38b, a third portion 38c extending downward from the tip portion of the second portion 38b, and a fourth portion extending obliquely downward from the lower end portion of the third portion 38c so as to approach the main body portion 34. 38d. In the following description, the fourth portion 38d is referred to as the return portion 38d.

The support portion 40 has a substantially U-shape as described above, and has a bottom portion 40a and a pair of rising portions 40b rising upward from the bottom portion 40a. A concave portion 40c is formed in the central portion and the upper end portion of each rising portion 40b. The support portion 40 is made of, for example, a metal material such as steel.

The adjustment portion 42 holds the support portion 40 so as to be vertically movable with respect to the main body portion 34 . In this embodiment, the adjusting portion 42 includes a guide member 42a having a screw thread on its outer peripheral surface, a hollow moving member 42b having a thread groove (not shown) on its inner peripheral surface, and a hollow moving member 42b extending upward from the moving member 42b. and a connecting member 42c. The guide member 42a has a tubular shape or a columnar shape and is provided so as to extend upward from the upper end portion of the main body portion 34 . In this embodiment, the moving member 42b is fitted into the guide member 42a so that the thread of the guide member 42a and the thread groove of the moving member 42b are screwed together. The connecting member 42c has a circular tube shape or a rectangular tube shape. A lower end portion of the connecting member 42c is supported by the moving member 42b so as to be rotatable with respect to the moving member 42b. The support portion 40 is fixed to the upper end portion of the connecting member 42c. In this embodiment, the moving member 42b moves vertically with respect to the guide member 42a by rotating the moving member 42b. As a result, the support portion 40 moves vertically with respect to the main body portion 34 . Further, in this embodiment, the position of the support portion 40 in the vertical direction can be fixed by stopping the moving member 42b at an arbitrary position. Although detailed description is omitted, the connecting member 42c may be fixed to the moving member 42b. In this case, the support portion 40 is rotatably supported by the upper end portion of the connecting member 42c.

Referring to FIG. 1, in this embodiment, the reinforcing member 32 is attached to the support 12 between a pair of vertically adjacent connecting members 16 . In the example shown in FIG. 1, each reinforcing member 32 is attached to the column 12 so as to be positioned inside the pair of connecting members 16 in the inter-beam direction, but is attached to the outside of the pair of connecting members 16 in the inter-beam direction. may be attached to the strut 12 so as to be positioned at

In the example shown in FIG. 1, among the plurality of connecting metal fittings 18, the connecting metal fitting 18 positioned one below the connecting metal fitting 18 to which the upper connecting material 16 is connected and the first metal fitting 36 are connected. The second metal fitting 38 is connected to the connecting metal fitting 18 positioned one above the connecting metal fitting 18 to which the connecting material 16 is connected. When the reinforcing member 32 is attached to the column 12, the vertical length of the reinforcing member 32 is set to, for example, 3 sections or more and less than 4 sections, where one section is between a pair of vertically adjacent connecting fittings 18. be. Specifically, the length of the reinforcing member 32 in the vertical direction is set to, for example, about 1.4 m to 1.8 m when attached to the strut 12 . In the example shown in FIG. 1, the length of the reinforcing member 32 in the vertical direction is set to a length corresponding to about three sections, but the main body portion is further downward than the main body portion 34 shown in FIG. May be extended. The length of the main body portion 34 in the vertical direction is preferably set to one section or more, and more preferably set to two sections or more.

A method of attaching the reinforcing member 32 to the support column 12 will be briefly described below. 3 to 7 are diagrams for explaining a method of attaching the reinforcing member 32. FIG. 8 is a sectional view taken along the line AA of FIG. 7. FIG.

3 and 4, when attaching the reinforcing member 32 to the column 12, first, the return portion 38d of the second metal fitting 38 is inserted into the wedge insertion hole (not shown) of the connecting metal fitting 18 from above. Plug in. Next, referring to FIGS. 5 and 6 , after the first metal fitting 36 and the connecting metal fitting 18 are fitted together, the first metal fitting 36 and the connecting metal fitting 18 are fixed by the wedge 44 .

7 and 8, the support portion 40 is moved upward by the adjusting portion 42 to bring the support portion 40 into contact with the lower surface of the tether 16. As shown in FIG. This completes the attachment of the reinforcing member 32 to the column 12 . In addition, as shown in FIG. 8, in this embodiment, the lower surface of the connecting material 16 is fitted into each of the concave portions 40c of the pair of rising portions 40b. In this embodiment, the support portion 40 does not protrude above the tether 16 when the lower surface of the tether 16 is supported.

As described above, in this embodiment, both the first metal fitting 36 and the second metal fitting 38 are attached to the connecting metal fitting 18 fixed to the post 12 . Thereby, the reinforcing member 32 (main body portion 34 ) can be arranged along the column 12 over at least one section or longer between the pair of connecting members 16 . As a result, the deformation of the struts 12 in the inter-beam direction can be sufficiently suppressed by the reinforcing members 32, and the buckling of the struts 12 can be suppressed. More specifically, even if a force to deform the column 12 is generated, the force can be borne by not only the column 12 but also the reinforcing member 32 . That is, the struts 12 and the stiffeners 32 can resist deformation of the struts 12 . In other words, by attaching the reinforcing material 32 to the column 12, the cross-sectional area of the portion of the column 12 that resists deformation can be increased. Thereby, buckling of the strut 12 can be suppressed.

Further, in the present embodiment, the reinforcing member 32 can be attached near the column 12 by the first metal fitting 36 and the second metal fitting 38 so that the main body portion 34 extends vertically along with the column 12 . As a result, when the worker moves on the temporary scaffold 100, it is possible to prevent the worker's head from coming into contact with the reinforcing member 32 (main body portion 34). That is, it is possible to suppress narrowing of the worker's passage.

As a result, according to the reinforcing member 32 according to the present embodiment, it is possible to improve the strength of the temporary scaffolding 100 while suppressing hindrance to movement of the worker.

Further, in the present embodiment, the supporting portion 40 can restrict the movement of the connecting material 16 in the row direction. Thereby, the strength of the temporary scaffolding 100 can be further improved. In general, when the struts 12 and the tethers 16 are firmly connected, it is conceivable that the tethers 16 are deformed in synchronism with the deformation of the struts 12, and the entire temporary scaffolding 100 is deformed. In this regard, in the present embodiment, the support portion 40 supports the tether 16 from below at a position away from the connecting portion between the column 12 and the tether 16 in the inter-beam direction, thereby sufficiently suppressing the deformation of the tether 16 . can be suppressed to As a result, deformation and buckling of the entire temporary scaffolding 100 can be suppressed.

Further, in this embodiment, the position of the support portion 40 can be adjusted by the adjustment portion 42 . Thereby, after the reinforcing member 32 is attached to the column 12 , the supporting portion 40 can be easily brought into contact with the connecting member 16 .

Further, in the present embodiment, the upward movement of the return portion 38 d of the second metal fitting 38 is restricted by the connecting metal fitting 18 . In other words, the upward movement of the reinforcing member 32 is restricted by the contact between the return portion 38d and the connecting fitting 18. As shown in FIG. Thereby, it is possible to sufficiently prevent the reinforcing member 32 from coming off the column 12 .

Further, in the present embodiment, the supporting portion 40 is configured so as not to protrude upward beyond the connecting material 16 when the connecting material 16 is supported from below. Regarding this point, in the reinforcing device of Patent Document 1, the upper end of the brace member is connected to the horizontal member via the upper fixing means, but the upper fixing means protrudes above the horizontal member. . In temporary scaffolding, most of the fabric frames with floors are attached to posts so that the upper surface of the flooring is approximately level with the upper ends of the horizontal members. For this reason, when the upper fixing means connecting the brace member and the horizontal member protrudes upward from the horizontal member, that is, the fabric frame with the floor, as in the reinforcing device of Patent Document 1, the operator must remove the upper fixing means. There is a possibility of stumbling. On the other hand, as described above, in the present embodiment, the support portion 40 does not protrude above the connecting material 16 . Therefore, the worker does not stumble on the support portion 40, and the movement of the worker can be prevented from being hindered by the support portion 40.

In the above-described embodiment, the reinforcing member 32 has the first metal fitting 36 and the second metal fitting 38 , but the number of metal fittings for attaching the reinforcing member 32 to the column 12 is not limited to two. For example, the stiffener may comprise three or more fittings connectable to the fittings 18 of the strut 12 .

In addition, in the reinforcing member 32 described above, the configurations of the first metal fitting 36 and the second metal fitting 38 may be interchanged. In this case, the second metal fitting (the metal fitting provided on the upper side) is not provided with the return portion 38d described above.

In the above-described embodiment, only one of the first metal fitting and the second metal fitting was fixed to the connecting metal fitting 18 of the post 12 by a wedge. , to be fixed to the connecting fittings 18 of the struts 12 by wedges. For example, instead of the second metal fitting 38, a metal fitting having the same configuration as the first metal fitting 36 may be provided as the second metal fitting.

In the above-described embodiment, the connecting metal fitting 18 positioned one lower than the connecting metal fitting 18 to which the upper connecting material 16 is connected is connected to the first metal fitting 36, and the connecting metal fitting to which the lower connecting material 16 is connected. A first metal fitting 36 and a second metal fitting 38 are provided so that the connecting metal fitting 18 positioned one position above the metal fitting 18 and the second metal fitting 38 are connected. The positions are not limited to the examples given above. For example, the first metal fitting 36 may be provided so as to be connected to the connecting metal fitting 18 positioned two below the connecting metal fitting 18 to which the upper connecting material 16 is connected, and the lower connecting material 16 is connected. A second metal fitting 38 may be provided so as to be connected to the connecting metal fitting 18 located two positions above the connecting metal fitting 18 .

Although the first metal fitting 36 and the second metal fitting 38 are welded to the body portion 34 in the above-described embodiment, the first metal fitting 36 and the second metal fitting 38 are welded to the body portion 34 via other members. May be fixed. Alternatively, the second metal fitting 380 may be formed by deforming the lower end portion of the main body portion 34, like the reinforcing member 32a shown in FIG.

In the above-described embodiment, the connecting member 16 is supported from below by the concave portion 40c of each raised portion 40b. However, as shown in FIG. The bottom portion 40a may support the tether 16 from below. In this case, the recess 40c may not be provided.

Further, the configuration of the adjustment section 42 is not limited to the above example, and various configurations that can move the support section 40 up and down can be employed. Although detailed description is omitted, for example, instead of the above-described moving member 42b, as shown in FIG. 48 may be provided. Also in the adjusting section 42 shown in FIG. 11A, the moving member 46 is provided rotatably with respect to the guide member 42a. However, no thread is formed on the outer peripheral surface of the guide member 42a, and no thread groove is formed on the inner peripheral surface of the moving member 46 either.

In this embodiment, by rotating the moving member 46 , the inclined surface 46 a rotates while contacting the position adjusting member 48 . As a result, the moving member 46 moves up and down, and the connecting member 42c and the support portion 40 (see FIG. 2) can move up and down.

Further, although detailed description is omitted, for example, as shown in FIG. good. In addition, in this embodiment, the connecting member 42c may have a cylindrical shape or each column shape.

In the above-described embodiment, the case where the scaffolding body is a wedge binding type scaffolding has been described, but the present invention can also be applied to other temporary scaffolding such as form shoring.

ADVANTAGE OF THE INVENTION According to this invention, the intensity|strength of a temporary scaffolding can be improved, suppressing the obstruction of a worker's movement. Therefore, the present invention can be suitably used in various temporary scaffolds.

10 scaffolding (wedge binding type scaffolding)
12 Post 14, 16 Tie material 17 Cloth frame with floor 18 Connection fitting 20, 44 Wedge 30 Scaffold body 32 Reinforcement member 34 Main body 36 First metal fitting 38 Second metal fitting 40 Support part 42 Adjusting part 100 Temporary scaffold

Claims (4)

A plurality of pillars extending in the vertical direction, a plurality of connecting fittings for wedge binding fixed to each of the plurality of pillars at intervals in the vertical direction, and a plurality of tethers connecting the plurality of pillars in the horizontal direction. A reinforcement for use in a temporary scaffold comprising:
a main body extending linearly;
a first metal fitting that is fixed to the main body and attachable to the connecting metal fitting of the support;
a second metal fitting that is fixed to the main body portion at a position apart from the first metal fitting in the axial direction of the main body portion and that can be attached to a connecting metal fitting of the support;
a supporting portion capable of supporting the connecting material from below;
an adjustment part that connects the support part and one end of the body part in the axial direction and adjusts the position of the support part in the axial direction ;
one of the first metal fitting and the second metal fitting is configured to be fixable to the connecting metal fitting of the support by a wedge;
The other of the first metal fitting and the second metal fitting has a hook shape that can be locked to the connecting metal fitting of the support,
The first metal fitting and the second metal fitting are reinforcing members configured so that the main body can be attached to the support so that the main body extends vertically along with the support. A plurality of pillars extending in the vertical direction, a plurality of connecting fittings for wedge binding fixed to each of the plurality of pillars at intervals in the vertical direction, and a plurality of tethers connecting the plurality of pillars in the horizontal direction. A reinforcement for use in a temporary scaffold comprising:
a main body extending linearly;
a first metal fitting that is fixed to the main body and attachable to the connecting metal fitting of the support;
a second metal fitting that is fixed to the main body portion at a position apart from the first metal fitting in the axial direction of the main body portion and that can be attached to a connecting metal fitting of the support;
a supporting portion capable of supporting the connecting material from below;
an adjusting portion that connects the support portion and one end portion of the body portion in the axial direction and adjusts the position of the support portion in the axial direction;
At least one of the first metal fitting and the second metal fitting is configured to be fixable to the connecting metal fitting of the pillar by a wedge,
The first metal fitting and the second metal fitting are reinforcing members configured so that the main body can be attached to the support so that the main body extends vertically along with the support. The reinforcing member according to claim 1 or 2 , wherein the supporting portion does not protrude above the connecting member when supporting the lower surface of the connecting member. a plurality of pillars extending in the vertical direction, a plurality of connecting fittings for wedge binding that are fixed to each of the plurality of pillars at intervals in the vertical direction, a plurality of tethers that connect the plurality of pillars in the horizontal direction; A temporary scaffolding having the reinforcing member according to any one of claims 1 to 3 attached to at least one of the plurality of pillars.

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