JPH0713976U - Work scaffolding fixture - Google Patents

Abstract

(57) [Summary] [Purpose] The number of members can be reduced, fixing to the steel column is simple by welding only, and removal from the steel column is a simple work that only melts and works, workability Can be improved. [Structure] Protrusions 3a and 3b are provided above and below a pair of vertically elongated members 3 to be welded to a steel column, and the upper protrusion 3a is provided with
An angle member 4 serving as a scaffolding support member is horizontally installed so that an opening is formed downward, and a horizontal support plate 5 is provided on a lower protruding portion 3b.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a fixture for attaching a work scaffold to a steel column at a construction site of a steel frame structure or a steel frame reinforced concrete structure.

[0002]

[Prior art]

 When performing welding work or bolt fastening work by connecting steel columns to each other or connecting steel columns to steel beams, in order to install a working machine such as a welding machine or to secure a working space for workers. A scaffold is required, and one such scaffold is, for example, one attached to a steel column as disclosed in Japanese Utility Model Laid-Open No. 59-8442.

As an attachment for attaching the scaffold to the steel column, there is, for example, one shown in Japanese Utility Model Application No. 63-24538 previously proposed by the applicant, which will be described with reference to FIGS. 5 to 8. To do. First, the structure of the work scaffold will be described. The scaffold plates 2 are attached to the outer circumference of the steel column 1 so as to face each other, and the bridge plate 12 is spanned between the scaffold plates 2. The scaffolding plate 2 is provided with insertion ridges 11 facing upward on the outer side of the frame member 13, and through holes 14 are formed at three places near both left and right ends and in the center.

As shown in FIG. 6, a fixture for attaching the scaffolding plate 2 to the steel column 1 includes an angle member 17 so that an opening is formed downward on a mounting substrate 16 fixed to the steel column 1 with bolts 15a and nuts 15b. Is provided laterally along the reinforcing bracket 18a, and the angle member 17 forms a downwardly opening horizontal groove portion 19 into which the inserting projection 11 of the scaffolding plate 2 is inserted as an upper supporting portion.

Similarly, a short side portion of an unequal side angle member is attached to the mounting substrate 16 so as to face the angle member 17, and a short side portion of the angle member is attached to the mounting substrate 16, and a long side portion is used as a horizontal plate 20 to support a bracket. A horizontal portion 21 is provided so as to be supported by the horizontal plate 20 and serves as a lower supporting member that supports the lower surface of the frame member 13 of the scaffolding plate 2 for a required length by the horizontal plate 20. The horizontal groove portion 19 and the horizontal portion 21 are combined. Together, the support portion of the scaffolding plate 2 is formed on the outer circumference of the steel column 1.

A flange 22 is attached to the outside of the angle member 17, and a vertical through hole 23 is formed in the flange 22 and the horizontal plate 20. In the figure, reference numeral 24 is a fixing rod which is inserted into the through hole 23, and a small hole is formed on the upper surface of the angle member 17, and a nut is attached to this small hole to project inward as a screw hole 25. Allow the set screw 26 to be screwed.

To fix the scaffolding to the steel column 1 with such a fixture, the bolt 15a is welded to the steel column 1 in advance, and the nut 15b is fastened to the bolt 15a to fix the attachment substrate 16 to the steel column 1. With respect to such a fixture, the frame member 13 of the scaffolding plate 2 is slanted at its end surface as shown in FIG. Then, if it is installed so as to raise a shoji, the lower surface of the frame member 13 is entirely placed on the horizontal portion 21.

As a result, the scaffolding plate 2 is supported so that the frame member 13 is vertically sandwiched between the angle member 17 and the horizontal plate 20. Then, the through hole 14 of the frame member 13 and the through hole 23 of the fixture are aligned, the rod 24 is inserted into these through holes 14 and 23, and the lower end is screwed into the through hole 23. Is fixed to the fixture. Further, if necessary, a set screw 26 is screwed into the screw hole 25 to press the head of the insertion projection 11 to prevent rattling.

[0009]

[Problems to be solved by the device]

 As described above, in the conventional fixture, since the bolt is pre-welded to the steel column and then the nut is screwed to fix the mounting substrate to the steel column, only a large number of parts for attachment are required. Not only that, the installation work required two works, welding and bolting, and the workability was not good. Also, after removing the scaffolding plate, the bolts 15a may be removed without any problem, but the fixtures had to be removed due to the large protrusion.

The object of the present invention is to eliminate the disadvantages of the above-mentioned conventional example, reduce the number of members, and the fixing to the steel column is simple by just welding, and a work scaffolding fixture capable of improving workability is provided. To provide.

[0011]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a scaffolding support member such that a pair of vertically elongated members to be welded to a steel column are provided with projections on the upper and lower sides, and an opening is formed downward on the upper projections. The gist of the present invention is that the angle material to be used is horizontally installed, a horizontal support plate is provided at the lower protruding portion, and the vertically elongated member is formed by press molding.

[0012]

[Action]

 According to the present invention, only by welding a pair of vertical elongated members to a steel frame column, the angle member and the horizontal support plate integrated with the vertical elongated member project from the steel column, so that the angle members and the horizontal members are horizontal. If the upper and lower sides of the frame material of the scaffold are locked to the support plate, the scaffold will be fixed to the steel column. After use, the fixture can be easily removed from the steel column by fusing the upper and lower protrusions of the vertically elongated member welded to the steel column at the base part.

[0013]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of a work scaffolding fixture according to the present invention, and FIG. 2 is a perspective view showing a work scaffold attached to the same as above, showing a work scaffold fixed to a steel column by the fixture according to the present invention. Since the configuration is similar to that already described for the conventional example of FIG. 5, the same reference numerals are given and detailed description thereof is omitted here.

As shown in FIG. 1, the work scaffolding fixture of the present invention has an L-shaped upward protrusion 3a formed on the upper portion of a pair of vertically elongated members 3 whose rear surface is welded to the steel frame column 1. An angle member 4 serving as a support member for the scaffolding plate 2 is erected between the protruding portions 3a by welding so that the opening faces downward and rearward.

A lower protruding portion 3b having a horizontal supporting portion is formed on the lower portion of the vertically elongated member 3, and a horizontal support plate 5 is also erected by welding between the protruding portions 3b. The elongated member 3 can be easily formed by pressing a metal plate material.

Then, a protruding piece 6 is provided by welding from the center of the angle member 4 toward the front, and a hole 7 and a screw hole 8 are respectively formed at positions where the protruding piece 6 and the horizontal support plate 5 face each other. Set it up. In the figure, 9 is a fixing rod that is inserted into the hole 7 and the screw hole 8. It should be noted that the upper protrusion 3a is preferably L-shaped as in this example because an opening having a required size can be easily formed, but the lower surface may be a horizontal protrusion.

To explain the usage, the scaffolding plate 2 is fixed to the steel column 1 by fixing the back surface of the vertically elongated member 3 to the outer surface of the steel column 1 by welding. Then, as shown in FIG. 3, the frame member 13 of the scaffolding plate 2 is slanted so that the insertion ridge 11 can be inserted into the opening of the angle member 4 first, and then the whole body can be made vertical to raise the shoji. When installed in, the lower surface of the frame member 13 is placed on the horizontal support plate 5.

As a result, the scaffolding plate 2 is supported so that the frame member 13 on its side is vertically sandwiched between the angle member 4 of the fixture and the horizontal support plate 5. Therefore, as long as the scaffolding plate 2 is locked in the fixture in the vertical state, there is no possibility that the scaffolding plate 2 will come off the fixture, but as shown in FIG. The scaffold plate 2 can be attached by aligning the screw holes 8 of the support plate 5 with each other, inserting the fixing rod 9 into these holes 7, the through holes 14 and the screw holes 8 and screwing the tips into the screw holes 8. It is fixed to the tool.

After the scaffolding plate 2 is removed after the work is completed, the fixture fixed to the steel column 1 can be integrated with the vertical elongated members 3 by melting the bases of the upper and lower protrusions 3a and 3b. The angle member 4 and the horizontal support plate 5 are removed from the steel column 1.

Further, the portion remaining in the steel column 1 has a small degree of protrusion and does not interfere with the process as it is, and can be embedded in the steel column 1 when a fireproof coating is applied thereto.

[0021]

[Effects of the Invention] As described above, the work scaffolding attachment of the present invention can reduce the number of members, and can be fixed to a steel column simply by welding, and can also be removed from the steel column. It is possible to improve workability by only performing simple work.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a work scaffold attachment according to the present invention.

FIG. 2 is a perspective view showing a state in which the work scaffold is attached by the work scaffold attachment according to the present invention.

FIG. 3 is a vertical cross-sectional side view of the mounting tool of the present invention in use.

FIG. 4 is a vertical cross-sectional side view of a portion fixed by the rod in the use state of the fixture of the present invention.

FIG. 5 is a perspective view showing a state in which a work scaffold is attached by a conventional attachment.

FIG. 6 is an exploded perspective view of a conventional fixture.

FIG. 7 is a vertical cross-sectional side view of a conventional mounting tool in use.

FIG. 8 is a vertical cross-sectional side view of a fixing portion by a rod in a state where a conventional mounting tool is used.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Steel column 2 ... Scaffolding board 3 ... Long and slender member 3a ... Projection part 3b ... Projection part 4 ... Angle member 5 ... Horizontal support plate 6 ... Projection piece 7 ... Hole 8 ... Screw hole 9 ... Fixing rod 11 ... Insert Protrusions 12 ... Passing plate 13 ... Frame material 14 ... Through hole 15a ... Bolt 15b ... Nut 16 ... Mounting board 17 ... Angle material 18a ... Reinforcing bracket 18b ... Support bracket 19 ... Horizontal groove 20 ... Horizontal plate 21 ... Horizontal part 22 ... Flange 23… Through hole 24… Fixing rod 25… Screw hole 26… Set screw

Claims (2)

[Scope of utility model registration request] 1. An angle member serving as a support member for a scaffold is horizontally provided such that a pair of vertically elongated members to be welded to a steel frame column are provided with projecting portions above and below, and an opening is formed downward in the projecting portion above. A work scaffolding fixture characterized by being erected and provided with a horizontal support plate on the lower protruding portion. 2. The attachment for a work scaffold according to claim 1, wherein the elongated member is formed by press molding.