JPH0713400B2 - Steel pipe fixing member for suspension scaffolding for structures - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a steel pipe fixing for a handrail of a building suspension scaffold used for fixing a steel pipe of a scaffold suspended by a chain to the chain along the outer surface of a structure. It relates to members.

<Prior Art> When installing a suspension scaffold for a structure such as a bridge, first, a chain is suspended along the outer surface of the structure, and a scaffold board is attached to the lower end of the chain. Steel pipes are used for the installation of the scaffold, but at that time, a relatively soft wire is conventionally inserted into the hole part of the elliptical link that constitutes the chain, and depending on the wire, a round bar, a square bar, etc. Tied the steel pipe to
It is attached.

<Problems to be Solved by the Invention> As described above, when the numbered wire is inserted into the hole portion of the oval-shaped link forming the chain, the steel pipe is bound, and the chain is attached to the chain, at the time of dismantling the scaffold after use. The number line is cut and removed, but it is unavoidable that the number line cut at this time falls down. The cutting line that fell down pollutes the river and the sea, causing pollution problems.

It is an object of the present invention to provide a steel pipe fixing member for a building suspension scaffolding that solves the above problems.

<Means for Solving the Problems> Description will be made with reference to the drawings. In order to achieve the above object, the steel pipe fixing member of the building suspension scaffold according to the present invention, along with the structure, in the fixing member used for fixing the steel pipe to the scaffold suspended by the chain, the steel pipe 11 can be removed. A chain fixing cross-sectioned chain fixing substrate 6 provided with a protrusion 6a protruding to the opposite side of the clamp 4 is coupled to the holding clamp 4 so that the orthogonal position can be set, and is fitted to the protrusion 6a along the chain fixing substrate 6. A cover plate 7 having an indentation 7a is arranged, the chain fixing substrate 6 and the cover plate 7 are rotatably coupled to each other via hinges 8 at one ends, and the projection 6a has an oval shape that constitutes the chain 1. With one of the links 1a fitted, the bolt 9 which is swingably connected to the chain fixing base plate 6 via the pin 12 at the other end is hooked on the notch 7b provided on the cover plate 7, and the nut 10 is attached. By screwing and detachably connecting Steel pipe
11 is fixed to chain 1.

Further, rotatably coupling the clamp 4 and the chain fixing substrate 6 is also included in the present invention.

<Operation> Since the present invention is configured as described above, the steel pipe 11 can be securely held by the clamp 4, and one of the elliptical links is fitted and covered in the projection 6a of the chain fixing substrate 6. Cover with the plate 7, and the recess of the cover plate 7 at the tip of the protrusion 6a.
The steel pipe 11 can be easily and surely fixed to the chain 1 by fitting the 7a and connecting the chain fixing substrate 6 and the cover plate 7 with the bolt 9, the notch 7b and the nut 10.

<Examples> Examples will be described with reference to the drawings. 1 is a chain suspended along a structure, 1a is an oval link that constitutes the chain 1, and 2 is a lower end of the chain 1 attached by a conventional method. The scaffold plate 3 is a steel pipe fixing member for a handrail according to the present invention, and is constructed as follows. That is, 4 is a clamp, which is a combination of two surrounding pieces 4a and 4b having circular or square inner edges, and 4c is the surrounding piece 4
A hinge that rotatably connects the ends of a and 4b, 4d
Is a bolt connected to one of the other ends by a pin 4g, 4e is a bifurcated notch provided at the other opposite end, 4f
Is a nut screwed to a bolt 4d hooked on the notch 4e.

To the clamp 4, a chain fixing substrate 6 having a groove-shaped cross section is coupled via a coupling material 5 so that orthogonal positions can be set. Reference numeral 6a denotes a protrusion that is provided on the fixed substrate 6 and that protrudes to the opposite side of the clamp 4, and one of the elliptical links 1a that constitutes the chain 1 is fitted therein.

Reference numeral 7 is a cover plate arranged along the chain fixing substrate 6, and is provided with a recess 7a that fits into the projection 6a. The chain fixing board 6 and the cover plate 7 have hinges 8 at one end, respectively.
A bolt 9 which is rotatably coupled to the fixed base plate 6 at the other end and is swingably connected to the fixed base plate 6 through a pin 12 is hooked on a forked notch 7b provided on the cover plate 7, and a nut 10 is provided. Is detachably coupled by screwing.

In addition, the bonding material 5 includes one for fixing the clamp 4 and the chain fixing substrate 6 to each other and one for rotatably connecting,
It can be arbitrarily selected.

Next, the operation will be described. When fixing the steel pipe 11 for handrails to the chain 1, loosen the nut 10 and pin the bolt 9
Unfold 12 and remove from the notch 7b to open the cover plate 7,
Insert one of the elliptical links 1a forming the chain 1 into the protrusion 6a, close the cover plate 7 again, hook the bolt 9 into the notch 7b formed in the cover plate 7, and fit the recess 7a into the protrusion 6a. Then tighten the nut 10. Next, the nut 4f is loosened, the surrounding piece 4a is opened, the steel pipe 11 is inserted into the central space in a state where the clamp 4 is orthogonal to the fixed substrate 6, and then the surrounding piece
4a is closed, the nut 4f is tightened again, and the steel pipe 11 is firmly gripped by the surrounding pieces 4a and 4b. By performing the above operation also on the other end of the steel pipe 11, the other fixing member 3 and the steel pipe 11, the steel pipe 11 for handrails can be fixed to the chain 1.

<Effects of the Invention> Since the present invention is configured as described above, the steel pipe 11 can be fixed to the chain 1 easily, safely, and reliably.

[Brief description of drawings]

1 is a front view showing an embodiment of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a schematic view of a suspension scaffold to which the present invention is applied, and FIG. 4 is a partially enlarged view of FIG. is there. 1 …… Chain 1a Link 2 Scaffolding plate 3 Steel pipe fixing member 4 Clamp 4a, 4b Encircling piece 4c Hinge 4d Bolt 4e Hole 4f Nut 4g Pin 5 …… Coupling member 6 …… Fixed substrate 6a …… Projection 7 …… Cover plate 7a …… Dimple 7b …… Notch 8 …… Hinge 9 …… Bolt 10 …… Nut 11 …… Steel pipe 12 …… Pin

Claims (2)

[Claims] 1. A fixing member used for fixing a steel pipe to a scaffold suspended by chains along a structure, wherein the steel pipe (1
1) A clamp (4) which detachably holds the clamp (4) is connected to a chain fixing substrate (6) having a groove-shaped cross section in which a protrusion (6a) protruding to the opposite side of the clamp (4) is provided so that the orthogonal position can be set.
A cover plate (7) provided with a recess (7a) that fits into the protrusion (6a) is arranged along the chain fixed substrate (6), and the chain fixed substrate (6) and the cover plate (7) are respectively arranged. An elliptic link (1) rotatably coupled at one end via a hinge (8) and constituting a chain (1) on the protrusion (6a).
A notch formed in the cover plate (7) with a bolt (9) oscillatingly connected to the chain fixing base plate (6) via a pin (12) at the other end with one of the a) fitted. A steel pipe fixing member for a building suspension scaffold for fixing a steel pipe (11) to a chain (1) by hooking it on (7b), screwing a nut (10), and detachably connecting it. 2. The steel pipe fixing member for a building construction scaffolding according to claim 1, wherein the clamp (4) and the chain fixing substrate (6) are rotatably connected to each other.