JPH0453390Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] This invention, when constructing a steel frame or steel-framed reinforced concrete building, connects one end of the single pipe to an external scaffold and connects the other end of the single pipe to the building. This invention relates to a fastening hardware for a single pipe for external scaffolding used to fasten to a beam steel frame.

[Conventional technology]

The conventional single-tube fastening hardware for external scaffolding is
As shown in the figure, the structure was such that a U-shaped clamp b that clamps the flange of the beam steel frame a and a clamp c for a single pipe were directly connected. In the figure, d is an external scaffold, e is a single pipe for retaining, and f is a wall connection, which is screwed into a female thread-shaped insert metal fitting h embedded in the outer wall g. i is an opening such as a window.

[Problem that the invention attempts to solve]

The above conventional example has the following problems.

In other words, when the external scaffolding d is secured from the steel beam a of the building, at the time of construction of the external wall formwork j,
Since the standby single pipe e is in the way, after attaching the wall connection f to the insert hardware h embedded in the outer wall part of the lower floor and connecting it to the external scaffolding d, remove the standby single pipe e and its fastening hardware. Therefore, it was necessary to gradually move these items to the upper floors.

Furthermore, as shown in Fig. 5, finishing work on the external wall g with tiles k etc. will be carried out with the external scaffolding d supported by the wall joints f, so the part of the insert hardware h screwed onto the wall joints f will be This remained as a defective part, and it was necessary to finish this part later.

In view of the above-mentioned conventional drawbacks, the present invention makes it possible to place a standby single pipe for external scaffolding using an opening in the outer wall, and provides a fastening hardware for fastening the standby single pipe and its one end to the beam steel frame. A fastening method that eliminates the need for relocation to an upper floor or finishing work on damaged areas on finished surfaces of external walls, and also allows one end of the single pipe for backup to be tied to the flange of the steel beam regardless of the direction of the steel beam. It provides hardware.

[Means for solving problems]

The technical measures taken by the present invention to achieve the above objective are as follows. That is, the fastening hardware for a single pipe for external scaffolding according to the present invention has a U-shaped cross section and a bolt with a head that is screwed into a screw hole formed in one of the opposing plate parts of the member. An intermediate member having a horizontal plate part facing the outer surface of the plate part and a vertical plate part hanging down at a substantially right angle from the horizontal plate part is attached to the plate part facing the tip of the headed bolt of the clamp. The U-shaped clamp is rotatably attached to the U-shaped clamp around pivot shafts along the axis of the headed bolt, and the pivot shaft is attached to the tip of the vertical plate portion of the intermediate member. It is constructed by providing a flexible clamp for a single tube that can rotate freely around a right-angled axis.

[Effect]

According to the above configuration, an intermediate member having an appropriate vertical length is located between the U-shaped clamp and the flexible clamp,
In addition, since the flexible clamp can rotate about the axis perpendicular to the direction in which the U-shaped clamp holds the intermediate member, the flange of the beam steel frame can be clamped with the U-shaped clamp, and one end can be connected to the external scaffolding. The other end of the single tube for retaining can be held by a flexible clamp through the opening in the outer wall.

In addition, since the intermediate member and the U-shaped clamp are relatively rotatable around the axis along the clamping direction by the U-shaped clamp, regardless of the direction of the beam steel frame, even if the beam is parallel to the outer wall, Even if the beams are perpendicular to the exterior wall, their flanges can be held in place with U-shaped clamps to provide support.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1 to 3.

In the figure, A is the fastening hardware according to the present invention, B is a single pipe for external scaffolding, C is external scaffolding, D is a large beam steel frame, E is a small beam steel frame, F is an external wall, and G is an opening such as a window. .

The fastening hardware A includes a U-shaped clamp 3 consisting of a member 1 having a U-shaped cross section and a bolt 2 with a head screwed into a screw hole formed in one of the opposing plate portions 1a and 1b of the member 1. , a pivot shaft 4 along the axis of the headed bolt 2 relative to the U-shaped clamp 3;
an intermediate member 5 pivotally attached to the intermediate member 5 so as to be rotatable around the axis p ₁ ; and a flexible clamp 6 for a single pipe rotatable to the intermediate member 5 around an axis p ₂ perpendicular to the pivot shaft 4. It is composed of. The intermediate member 5 includes the plate portion (headed bolt 2) in the U-shaped clamp 3.
a horizontal plate part 5a facing the outer surface of the horizontal plate part 1b, a vertical plate part 5b hanging down from the horizontal plate part 5a at a substantially right angle, and a vertical plate part 5b extending from the tip of the vertical plate part 5b to the horizontal plate part 5a. The flexible clamp 6 is formed into a box shape having a bent plate portion 5c bent in parallel and a pair of side plate portions 5d located between both side edges of these plate portions 5a, 5b, and 5c. It is pivotally attached to the tip of the vertical plate portion 5b with a bolt 7a and a nut 7b.

The single pipe B for external scaffolding is shown in Figures 2 and 3.
As shown in the figure, it is divided into two parts, and the length can be adjusted by loosening a tightening screw 8.

The fastening hardware A having the above structure has an intermediate member 5 having an appropriate vertical length, and the flexible clamp 6 is rotatable about the axis p2 with respect to the intermediate member ₅ , as shown in FIG. As shown in the figure, the single tube B for external scaffolding can be placed using the opening G of the outer wall F.

In addition, normally, the U-shaped clamp 3 clamps the flange of the girder steel frame D at a position where the single tube B for external scaffolding is perpendicular to the outer wall F, but in the above-mentioned fastening hardware A, the U-shaped clamp 3 Since the shaped clamp 3 and the intermediate member 5 are rotatable around the axis _p1 of the pivot shaft 4, the flange of the girder steel frame D has unevenness due to the joining studs at the position where it should be clamped, resulting in a U-shaped clamp. 3 is difficult to clamp, the U-shaped clamp 3 can be shifted in the longitudinal direction of the girder to clamp the flat part of the flange, and as shown by the imaginary line in Fig. 3, it can be clamped onto the outer wall F. Even if the small beam steel frame E is in a vertical direction, it can be clamped, and the beam can be held in place regardless of the direction of the beam steel frame.

[Effect of idea]

Since the present invention has the above-described configuration, it can achieve the following effects.

An intermediate member with an appropriate vertical length is located between the U-shaped clamp and the flexible clamp, and the flexible clamp can rotate relative to the intermediate member around an axis perpendicular to the direction in which the U-shaped clamp holds the clamp. As in the example, the single pipe for backup can be placed using the opening in the outer wall, making it unnecessary to relocate the fastening hardware to the upper floor and finish work on damaged parts of the finished surface of the outer wall.

The intermediate member and the U-shaped clamp can rotate freely around the axis of the pivot shaft along the clamping direction by the U-shaped clamp, so regardless of the direction of the beam steel frame, that is, with the large beam parallel to the outer wall. Even if there are small beams perpendicular to the exterior wall, the flanges can be clamped with U-shaped clamps to provide support.

Since the intermediate member and the U-shaped clamp are relatively rotatable around the axis of the pivot shaft, the flange of the beam steel frame has unevenness due to the joining studs at the position where it should be clamped, so the U-shaped clamp can clamp it. If it is difficult,
It can be held while avoiding that position.

[Brief explanation of the drawing]

1 to 3 show an embodiment of the present invention,
FIG. 1 is a sectional view of the fastening hardware, FIG. 2 is a perspective view, and FIG. 3 is a schematic side view showing the state of use. 4 and 5 are schematic side views illustrating a conventional example. A... Fastening hardware, 1... U-shaped member, 1a, 1
b...Plate portion, 2...Headed bolt, 3...U-shaped clamp, 4...Pivot shaft, 5...Intermediate member, 6...
...Flexible clamp, p ₁ , p ₂ ... Axis core.

Claims (1)

[Scope of utility model registration request] A U-shaped clamp consisting of a member having a U-shaped cross section and a headed bolt that is screwed into a screw hole formed in one of the opposed plate parts of the member, the plate part facing the tip of the headed bolt. , an intermediate member having a horizontal plate part facing the outer surface of the plate part and a vertical plate part hanging down at a substantially right angle from the horizontal plate part is attached to the U-shaped clamp along the axis of the headed bolt. The ivy is pivoted so as to be rotatable around each of the pivot shafts, and a single pipe flexible clamp is provided at the tip of the vertical plate portion of the intermediate member, and is rotatable around an axis perpendicular to the pivot shaft. A single-tube fastening hardware for external scaffolding.