JPH0448270Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a device for attaching scaffolding bolts to metal columns supporting power transmission lines and the like.

[Prior art]

Conventionally, as shown in FIGS. 14 and 15, a scaffolding bolt attachment device for a metal column has been provided with through holes 15 for bolt insertion in the groove bottom plate 1 and flanges 4 at the tips of the groove side plates 3 on both sides. The flange 4 of the groove-shaped support fitting 16 in which the groove-shaped support fitting 16 is bent and continuous is fixed to the side surface of the metal column 6 by welding, and the locking nut 17 is inserted into the groove of the groove-shaped support fitting 16 from the side. The male threaded part 9 at the tip of the scaffolding bolt 7 is inserted into the bolt insertion hole 15 of the groove-shaped support fitting 16 and screwed into the locking nut 17, and the fixing screw is screwed into the male threaded part 9 of the scaffolding bolt 7. A scaffolding bolt attachment device for a metal column is known, which has a structure in which the scaffolding bolt 7 is fixed to the groove-shaped support fitting 16 by tightening the bolt 18.

[Problem that the invention attempts to solve]

However, in the case of the conventional scaffolding bolt attachment device for metal columns, in order to fix the scaffolding bolt 7 to the groove-shaped support fitting 16 at a high place, the locking nut 1 is
7 into the groove of the groove-shaped support fitting 16 from the side, the locking nut 17 may be accidentally dropped. If there is a worker present, there is a risk that the falling locking nut 17 may hit the worker and cause personal injury. Furthermore, when screwing the scaffolding bolt 7 into the locking nut 17, the locking nut 17
When aligning the screw hole with the bolt insertion through hole 15 and tightening and rotating the fixing nut 18, it is necessary to hold down the scaffolding bolt 7 by hand to prevent it from rotating, making the installation operation complicated. .

[Purpose of the invention, structure]

The purpose of this invention is to provide a scaffolding bolt attachment device for metal columns that can advantageously solve the above-mentioned problems. 2 and flanges 4 at the tips of the groove side plates 3 on both sides.
A rectangular locking metal fitting 8, which is slightly smaller than the opening 2, is fixed, and a tightening nut 10 is screwed into a male threaded portion 9 provided on the tip side of the scaffolding bolt 7, and a pair of locking nuts 10 are screwed together. A detent fitting 14, which includes an insertion plate 11, a pair of engagement plates 12, and a bolt insertion hole 13, is fitted onto the scaffold bolt 7 between the locking metal fitting 8 and the nut 10, and the locking metal fitting 14 is fitted onto the scaffold bolt 7 between the locking metal fitting 8 and the nut 10. 8 is inserted through the opening 2 of the groove bottom plate 1 and engaged with the inner surface of the groove bottom plate 1, and the locking insertion plate 11 of the locking fitting 14 is connected to the short side of the opening 2 and the locking fitting 8. The engagement plate 12 of the detent fitting 14 is engaged with the outer surface of the groove bottom plate 1, and the nut 10 engages the scaffolding bolt 7 via the detent fitting 8 and the detent fitting 14.
This is a scaffolding bolt attachment device for a metal column, characterized in that the bolts are tightened and fixed to a groove-shaped support fitting 5.

〔Example〕

Next, this invention will be explained in detail using illustrated examples.

6 to 8 show a groove-shaped support fitting 5 used in an embodiment of this invention, in which a groove bottom plate 1 is provided with a rectangular opening 2 extending vertically, and both upper and lower sides are provided with a rectangular opening 2 extending vertically. At the tip of the groove side plate 3, an arcuate flange 4 projecting outward is bent and connected.

FIGS. 9 and 10 show a scaffolding bolt 19 with a fixture used in an embodiment of this invention, which is equipped with a head 20 at the base end and an anti-slip unevenness 21 at the middle part. A male threaded portion 9 is provided on the tip side of the scaffolding bolt 7. After the nut 10 is screwed into the male threaded portion 9, a spring washer 22 and a locking fitting 14 are sequentially fitted, and then a rectangular locking member is fitted. A female threaded hole provided in the center of the metal fitting 8 is screwed into the tip of the male threaded portion 9 of the scaffolding bolt 7, and the locking metal fitting 8 is fixed to the tip of the male threaded portion 9 with adhesive or spot welding. There is.

Figures 11 to 13 show the locking fitting 14 used in the scaffolding bolt 19 with the fixture. A rotation prevention insertion plate 11 inserted into both ends of the opening 2 of the groove-shaped support fitting 5 is bent and continuous, and the groove bottom plate 1 of the groove-shaped support fitting 5 is provided on both left and right sides of the plate body.
An engagement plate 12 that is engaged with the outer surface of the holder is connected to the holder.

FIGS. 1 to 4 show a scaffold bolt attachment device for a metal column according to an embodiment of this invention using the groove-shaped support fitting 5 and the scaffold bolt 19 with an attachment tool. Each flange 4 of the metal fitting 5 is brought into contact with the side surface of the metal column 6 and fixed by welding, and then the locking metal fitting 8 of the scaffolding bolt 19 with the fixture is inserted from the opening 2 into the groove-shaped support metal fitting 5. After being inserted, it is rotated approximately 90 degrees,
As shown in FIG. 5, both ends of the locking fitting 8 are arranged on the inner surface of the groove bottom plate 1 of the groove-shaped support fitting 5,
Next, the rotation prevention insertion plate 11 of the rotation prevention metal fitting 14 is inserted between the short side of the opening 2 and the long side of the locking metal fitting 8, and the engagement plate 12 of the rotation prevention metal fitting 14 is inserted into the groove bottom plate. After being placed on the outer surface of the nut 10, the nut 10 is rotated in the tightening direction.
Due to the tightening force of the nut 10, the spring washer 2
The engagement plate 12 of the locking fitting 14 is pressed against the outer surface of the groove bottom plate 1 via the locking fitting 8.
are pressed against the inner surface of the groove bottom plate 1, and the scaffolding bolts 7
is fixed to the groove-shaped support fitting 5.

When implementing this idea, the opening 2 provided in the groove bottom plate 1 may extend in the left-right direction. Further, as a means for fixing the locking metal fitting 8 to the scaffolding bolt 7, a rotation preventing means similar to that of a known locking nut or thread crushing nut may be employed. Furthermore, any means other than welding may be used to secure the flange 4 of the groove-shaped support fitting 5 to the metal column 6.

[Effect of idea]

According to this invention, a scaffolding bolt 1 with a fitting is made up of a scaffolding bolt 7, a locking fitting 8 attached to the scaffolding bolt 7, a tightening nut 10, and a locking fitting 14.
9, the rectangular locking fitting 8 is attached to the metal column 6.
Insert the groove-shaped support fitting 5 into the groove-shaped support fitting 5 through the rectangular opening 2 of the groove-shaped support fitting 5 fixed to By interposing the anti-rotation insertion plate 11 between the short side of the opening 2 and the long side of the locking metal fitting 8, and then tightening the tightening nut 10, the groove-shaped support metal fitting 5 can be removed from the front. The scaffolding bolt 7 can be easily attached to the groove-shaped support fitting 5 by the above operation, and the locking insertion plate 11 can be inserted between the short side of the opening 2 and the long side of the locking fitting 8. Since the rotation of the scaffolding bolt 7 is prevented by interposing the scaffolding bolt 7, the scaffolding bolt 7 can be easily tightened and fixed to the groove-shaped support fitting 5 by simply rotating the tightening nut 10. The locking fitting 8 fixed to the tip of the scaffolding bolt 7 prevents the locking fitting 14 and the tightening nut 10 from coming off from the scaffolding bolt 7. Therefore, when installing the scaffolding bolt 7, There is no fear that the detent fitting 14 and the tightening nut 10 will come off and fall, and the installation work can be carried out safely.

[Brief explanation of the drawing]

Figures 1 to 13 show an embodiment of this invention, in which Figure 1 is a partially vertical side view of a scaffolding bolt attachment device for metal columns, and Figure 2 is a partially cross-sectional plane view. Figure 3 is a cross-sectional view taken along the line A-A in Figure 1, Figure 4 is a cross-sectional view taken along the line B-B in Figure 1, and Figure 5 shows how to attach the locking fitting at the tip of the scaffolding bolt to the groove-shaped support fitting. Fig. 6 is a front view of the groove-shaped support fitting, Fig. 7 is a side view thereof, Fig. 8 is a plan view of the groove-shaped support fitting, and Fig. 9 is a longitudinal sectional front view showing the state arranged inside the groove bottom plate. A plan view of the scaffolding bolt with a fixture, FIG. 10 is a sectional view taken along the line C-C in FIG. 9, FIG. 11 is a front view of the anti-rotation fitting, and FIG. FIG. 13 is a sectional view taken along the line E--E in FIG. 11. 1st
FIG. 4 is a side view of a conventional scaffolding bolt attachment device for metal columns, and FIG. 15 is an enlarged sectional view taken along the line FF in FIG. 14. In the figure, 1 is a groove bottom plate, 2 is an opening, 3 is a groove side plate, 4 is a flange, 5 is a groove-shaped support fitting, 6 is a metal column, 7 is a scaffolding bolt, 8 is a locking metal fitting, 9 is a male screw 10 is a tightening nut, 11 is an insertion plate for preventing rotation, 12 is an engagement plate, 13 is a bolt insertion hole,
14 is a rotation stopper, 19 is a scaffolding bolt with a fixture, and 22 is a spring washer.

Claims (1)

[Scope of utility model registration request] The flanges 4 of the groove support fitting 5, which has a rectangular opening 2 in the groove bottom plate 1 and flanges 4 at the tips of the groove side plates 3 on both sides, are fixed to the metal column 6, and A rectangular locking fitting 8, which is slightly smaller than the opening 2, is fixed to the tip, and a tightening nut 10 is screwed into the male threaded portion 9 provided at the tip of the scaffold bolt 7.
A pair of anti-rotation insertion plates 11 and a pair of engagement plates 12
A locking metal fitting 14 having a bolt insertion hole 13 and a locking metal fitting 14 is fitted onto the scaffolding bolt 7 between the locking metal fitting 8 and the nut 10, and the locking metal fitting 8 is inserted from the opening 2 of the groove bottom plate 1. It is inserted and engaged with the inner surface of the groove bottom plate 1, and the anti-rotation insertion plate 11 of the anti-rotation metal fitting 14 is interposed between the short side of the opening 2 and the long side of the locking metal fitting 8. The engagement plate 12 of the detent fitting 14 is engaged with the outer surface of the groove bottom plate 1, and the scaffolding bolt 7 is tightened and fixed to the groove-shaped support fitting 5 by the nut 10 via the detent fitting 8 and the detent fitting 14. Scaffolding bolt attachment device for metal columns, characterized by: