JPH0431401Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field] The present invention uses scaffolding metal fittings in which a beam having an upper chord member and a lower chord member is provided with a hook portion that can fit into each of the lower chord members. This invention relates to a scaffolding device that can be installed safely and without requiring a site for installing the scaffold by spanning boards.

[Background technology]

Conventionally, the present applicant proposed a scaffolding device based on the specification and drawings of Utility Model Application No. 59-3528 as a device for forming a scaffold using the beams of a frame structure. A scaffolding metal fitting having a receiving part for supporting a scaffold board was provided with a hook part at the upper end thereof, and the hook part was fitted to the upper end of the beam material for installation.
Therefore, even if there is a small gap in the above-mentioned fitting part, the gap will be enlarged through the base rod, and the receiving part will swing greatly and the swing will be propagated to the scaffolding board. The work was unsafe.

[Purpose of invention]

The present invention is based on the provision of hooks at the upper end and middle part of the base rod of the scaffolding metal fittings that can engage with the upper and lower chord members of the beam, respectively, thereby significantly reducing the swinging of the scaffolding board and improving work safety. The purpose is to provide a scaffolding device that can be used to increase height.

[Disclosure of invention]

An embodiment of the present invention will be described below based on the drawings. In FIGS. 1 and 2, the scaffolding device 1 of the present invention is
A beam member 11 having an upper chord member 12 and a lower chord member 13,
Scaffolding metal fittings 3, 3, 3, having a first hook part 9 and a second hook part 10 that can fit into the upper and lower chord members 12, 13,
3 are placed facing each other and in juxtaposition, and the scaffolding plates 7 are spanned over bearing shafts 6, 6 respectively installed in the receiving parts 5, 5 of the juxtaposed scaffolding metal fittings 3, 3.

The beam material 11 has flanges 17,
The upper chord member 12 and the lower chord member 13, which are respectively formed of channel steel with the flange 17 extending outward, are connected to the flanges 17, 1
It is a lattice beam formed by arranging lattices 7 facing each other and parallel to each other and spanning a lattice 19 therebetween, and is horizontally spanned over pillars 20 erected on a cloth foundation B.

The scaffolding metal fitting 3 consists of the base rod 2 having the first and second hook portions 9 and 10 as described above, and the receiving portion 5 provided at the lower end 12 of the base rod 2.

In this example, the base rod 2 consists of an upper cylindrical member 21 made of a square steel pipe, and a lower cylindrical member 22 inserted into the upper cylindrical member 11, and the lower end of the upper cylindrical member 12. is provided with one through hole 24 passing through from the front and back, and in the lower cylindrical member 22, through holes 25 that can be aligned with the through hole 24 are arranged in parallel in multiple stages above and below. By selecting the through hole 25 and inserting the locking pin 23 into the through holes 24 and 25, the upper and lower cylindrical members 21 and 22 are removed.
is fixed in a flexible manner. The locking pin 23 has a head 23a at one end and a small hole for inserting a split pin at the other end.

Further, an upper piece 26 is fixed to the upper part of the upper cylindrical member 21 and projects horizontally forward, and elongated holes 27, 27 extending in the longitudinal direction of the upper piece 26 are arranged in parallel. Further, an L-shaped width determining tool 32 is attached to the lower surface of the upper piece 26. The width determining fitting 32 includes a mounting piece 29 with a bolt protruding from a long hole 27 and a hanging piece 30 provided at its front end.
0, the upper piece 26 and the upper cylindrical member 21 form a first hook portion 9 that is bent downward at the upper end of the base rod 21.

Further, the width determining fitting 32 can be moved back and forth along the elongated hole 27, and the width of the first hook portion 9 can be changed.

Moreover, the upper cylindrical member 21 is placed above the through hole 24,
A vertical piece 35 extending downward is fixed to the tip of a horizontal piece 34 that horizontally projects forward by approximately the thickness of the flange 17 of the lower chord member 12, and the vertical piece 35, the horizontal piece 34, and the upper cylindrical member 21 A second hook part 10 bent downward is formed in the middle part of the base rod 2.

In addition, the lower cylindrical member 22 has a receiving portion 5 consisting of an upper open groove portion together with the lower cylindrical member 2 by raising a vertical piece 39 at the rear end of a lower piece 37 that protrudes rearward at the lower end thereof. is forming. One end of a receiving shaft 6 is fitted into the receiving portion 5 .

The receiving shaft 6 has different outer diameters as shown in FIG.
A plurality of base rods 41a, 41b that fit into a lens barrel shape,
41c can be telescopically fixed using fasteners 42a and 42b. The shaft rods 31a and 31b are cylindrical bodies, and a groove is formed in a threaded portion a circumferentially provided at one end.

The fasteners 42a, 42b have a tapered portion b that gradually becomes smaller in diameter toward the cylindrical tip that is screwed into the threaded portion, and therefore the shaft rods 41a, 41b
By screwing the fasteners 42a, 42b, the ends of the shafts 41a, 41b are deformed inward, and the shaft rods 41a, 41b, 41c are tightened and fixed.

The scaffolding board 7 is a long rectangular board long enough to straddle the beams 2, 2, and locking members 44, 44 are provided on the lower surfaces of both ends thereof.

Thus, the scaffolding metal fitting 3 has its first hook portion 9 in contact with the upper chord member 12 of the beam member 11, the upper piece 26 in contact with the upper cylindrical member 21 on the base plate 16, and the hanging piece 30 in contact with the flanges 17, 17, respectively. , and by fitting the second hook portion 9 to the flange 17 of the lower chord member 13, the base rod 2 is tightly fitted and attached to the beam member 11. Further, the base rod 2 hangs below the beam material 11.

By attaching the mounting scaffolding fittings 3... to the beams 11, 11 facing each other and side by side, the bearing shafts 6 can be bridged over the receiving portions 5 of the scaffolding fittings 3 placed side by side, and each A scaffolding board 7 is installed between the bearing shafts 6, 6 to form a scaffolding.

The scaffolding metal fittings 3 can be attached by positioning the base rods 2 inside the beams 11 as shown in FIG. 1, or by positioning them outside.

Furthermore, since the base rod 2 is telescopic, the height of the scaffold can be adjusted, and by making the bearing shaft 6 telescopic and long, a wide scaffold can also be formed.

In addition, FIG. 4 shows another example of the scaffolding metal fittings 3. In this example, the base rod 2 is formed by an upper member 51 and a lower member 52 each made of a plate, and a plurality of through holes 24..., 25 are formed through the upper and lower members 51, 52, respectively. By inserting the stop pins 23..., the upper and lower members 51, 52 are fixed in an expandable and retractable manner. Further, the first hook portion 9 is integrally formed by bending a plate.

As shown in FIG. 5, a plurality of mounting holes 55, 55 are drilled in the middle of the base rod 2, a vertical piece 56 parallel to the base rod 2 is fixed to one end, and a horizontal piece 57 having a threaded portion C to which a fastener 59 can be screwed is fixed to the other end.
The second hook 10 is formed by the base rod 2, the vertical piece 56, and the horizontal piece 57 by inserting the base rod 2, the vertical piece 56, and the horizontal piece 57 into the mounting hole 55. Therefore, in this example, the flange 17 of the lower chord 13 is clamped and fixed between the base rod 2 and the vertical piece 57 using a fastener 59.
By making the length of the second hook 10 equal to or greater than the width of the lower chord 13, the second hook 10 is disposed on both sides of the lower chord 13. The two flanges 17, 17 can also be fitted together. In this way, the scaffolding device 1 of the present invention can be modified into various forms.

[Effect of idea]

As described above, the scaffolding device of the present invention has a first hook portion and a second hook portion bent downward at the upper end and middle portion of the base rod, respectively.
A scaffolding metal fitting provided with a hook part was placed facing and juxtaposed with a beam member having an upper chord member and a lower chord member, with the first hook part fitted to the upper chord member and the second hook part fitted to the lower chord member. Scaffolding can be installed without requiring a site for scaffolding installation, and as the base rods engage with the beams at the upper end and middle portion, the swinging of the base rods is minimized and the scaffold board can be installed stably. , can increase the safety of scaffolding work and improve the efficiency of the work. Furthermore, since the bearing shaft for spanning the scaffolding board is fitted into the upper open groove-shaped receiving portion at the lower end of the scaffolding metal fitting, the workability of installation is also improved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a positional embodiment of the present invention;
Figure 2 is a perspective view illustrating the scaffolding metal fittings, Figure 3 is a perspective view showing the bearing shaft, Figure 4 is a perspective view showing another example of the scaffolding metal fittings, and Figure 5 is yet another example of the scaffolding metal fittings. FIG. 6 is an exploded perspective view of the main parts. 2... Base rod, 3... Scaffolding metal fittings, 5... Receiving part, 6
...Bearing shaft, 7...Scaffolding board, 9...First hook part, 1
0...Second hook portion, 11...Beam material, 12...Top chord material, 13...Lower chord material.

Claims (1)

[Scope of utility model registration request] The base rod 2 has a first hook part 9 and a second hook part 10 bent downward at the upper end and middle part thereof, respectively, and has an upper open groove-shaped receiving part 5 for mounting the receiving shaft. Scaffolding metal fittings 3..., horizontal upper chord members 12, lower chord members 1
3, the first hook part 9 is fitted to the upper chord member 12, and the second hook part 10 is fitted to the lower chord member 13, facing each other and juxtaposed with a gap between them. This scaffolding device has a scaffold board 7 installed between the receiving shafts 6, 6 which are fitted into the receiving parts 5 of the scaffolding metal fittings.