JP2000291883A - Method and apparatus for welding curing of steel members - Google Patents

Abstract

(57) [Problem] To solve the problem of the present invention, for example, in a steel-frame building or the like, spark scattering is prevented in an on-site welding operation of a steel frame member accompanying a steel-frame construction work. SOLUTION: A welded portion of a steel member to be welded is constituted by a bottom part a, an inclined part b, a magnet 7 provided on the bottom part, and an asbestos sheet 6 provided on the bottom part and the inclined part. The curing jigs 2, 3, 4 and 5 are attached to each other, the welding sparks are received by the curing jigs, and the welding sparks are captured by the asbestos sheet 6 to prevent the scattering of the welding sparks.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a welding curing method for preventing a spark from scattering in an on-site welding operation of a steel frame member in a steel frame building or the like in a steel frame building or the like, and an apparatus in the method.

[0002]

2. Description of the Related Art Conventionally, for example, in a steel (S) structure building constructed of steel frames, steel columns are sequentially fixed to an upper floor by temporarily fixing them with erection pieces, and the columns are connected by welding means. To build. Also, the erection piece is removed by welding after connecting the columns.

In this welding means, the spark scatters around the site during welding or cutting,
As a countermeasure against dangers such as ignition of volatile gases and fires due to combustible materials, fires in surrounding buildings, and damage to inhabitants, for example, as shown in FIG.

[0004]

However, it is difficult to reliably catch a spark that scatters more than expected because it is far from the welding work position only by providing a curing sheet around the welding work. In addition, not only does it hinder other work around the pillar, but there is also a problem that a gap is easily formed around the pillar, and the curing sheet cannot be diverted, which takes time. Further, there is known a method in which a metal curing cover is provided around a steel column.However, a scattered spark collides with the surface of the metal plate, and may fly out of the surface with the force of the spark. There is a problem that cannot be said.
The method and apparatus for welding and curing a steel column according to the present invention are proposed to solve such problems.

[0005]

The gist of the present invention for solving the above-mentioned problems of the method for curing and curing a steel column according to the present invention is to provide a method for welding a steel column to be welded around a welded portion of a steel member. A curing jig composed of a magnet provided on the portion and an asbestos sheet provided on the bottom surface and the inclined surface portion is attached, a welding spark is received by the curing jig, and the welding spark is captured by the asbestos sheet. The purpose is to prevent the scattering.

When the steel member is a steel column, the vertical position of the inclined surface is at least the same as or higher than the position of the welded portion.

The gist of the present invention for solving the above problems of the steel member welding curing apparatus according to the present invention is to provide a bottom surface, an inclined surface, a magnet provided on the bottom, and an asbestos provided on the bottom and the inclined surface. This is to combine a curing jig composed of a sheet and a sheet.

[0008] The curing jig is provided with a gap cover or an overlapping portion for covering a gap when the curing jig is slid in the front-rear and left-right directions; and the curing jig is divided into a plurality of pieces in the circumferential direction. And that two of the curing jigs are engaged with one set via a gap cover.

According to the method and the apparatus for welding and curing a steel column according to the present invention, when the welding spark scatters around and falls on the inner surface of the curing jig, it is reliably captured by the asbestos sheet.
Therefore, the problem caused by the secondary scattering in which the conventional welding spark falls on the inner surface of the metal curing jig and rebounds therefrom and jumps out of the curing jig can be surely solved by the present invention. Things.

Further, by providing the curing jig with the gap cover and the overlapping portion, for example, the steel frame member is a steel frame column and can easily cope with a change in size. Further, by engaging the curing jigs of the plurality of divided bodies with one set via the gap cover, the number of parts becomes small as a whole, the number of parts is reduced, and the parts management and storage of the welding curing apparatus are facilitated. It is.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a method and an apparatus for welding and curing steel members according to the present invention will be described with reference to the drawings. Note that, for easy understanding of the present invention, portions corresponding to the conventional example are denoted by the same reference numerals as the conventional example.

[0012] The apparatus for welding and curing steel members according to the present invention comprises:
For example, steel columns or steel beams, or other steel members are to be welded to each other. Among them, the steel column curing device 1 has corners so as to surround the periphery of the steel columns as shown in FIG. Curing jig in four parts including part 2,
3, 4, and 5.

As shown in FIGS. 1 and 2, each of the curing jigs has a horizontal bottom portion a, an inclined surface portion (also referred to as a folded portion) b extending obliquely upward, and the bottom surface portion a and the inclined surface portion b.
And an asbestos sheet 6 adhered to the inner surface of the sheet with an adhesive so as to cover almost the entire surface.

The height of the inclined surface portion b in the vertical direction is shown in FIG.
As shown in (2), in the use state, the height is set to a position slightly higher than the position of the connection portion of the steel columns 9, 9. This is to more reliably capture the welding spark.

A magnet 7 for attaching the curing jig to the steel column 9 is provided at the column-side end of the lower surface of the bottom portion a.
Is attached. The magnet is, for example, a permanent magnet or a magnet with a switch, and is attached with, for example, an adhesive.

As shown in FIG. 1, each of the bottom portions a has a steel column 9 at the center thereof when combined in a square shape.
Are formed so as to penetrate vertically.

Furthermore, the welding curing device 1 can be provided even when the size of the steel column to be welded changes.
Means for changing the size of the space for the steel column is required. Therefore, among the four parts, the curing jigs 2 and 5 are made into one pair, and the curing jigs 3 and 4 are made into one pair to cover the gap in the front-rear direction. Provide on the outer surface of the curing jig. In this way, two curing jigs each having a substantially U shape are formed.

In order to cover the gap in the left-right direction, the butting ends of the curing jigs 2 and 3 are provided with an overlapping portion c so as to be overlapped. The curing jigs 4 and 5 are also provided with the overlapping portion c. This makes it possible to cope with a change in the size of the steel column in a certain range. In addition, the curing device 1 is composed of two parts as a whole, which are engaged with each other via the gap cover.

As shown in FIG. 3A, the gap cover 8 has a length covering the bottom surface a and the inclined surface b of the curing jig in the left-right direction, and corresponds to a desired gap in the front-rear direction. To an appropriate length. Although not shown, the asbestos sheet 6 is, of course, attached to the inner surface of the gap cover 8 as well.

On the inclined surface of the gap cover 8, two long holes 8a and 8b are provided side by side in parallel with each other in the front-rear direction. The oblong surfaces b of the curing jig are inserted into the slots 8a and 8b.
Is inserted and loosely fitted with a bolt-shaped locking member d protruding therefrom. As a modified example, for example, the long holes 8a may be divided into two long holes before and after the curing jigs 2 and 5, instead of being formed as a series.

As shown in FIG. 3B, for example,
An enlarged hole 8c for loosely inserting the head of the locking member d is provided at the end of the long hole 8a. In addition, as a method of fixing the locking member d to the inclined surface portion b, a method of fixing by welding or fixing with a screw may be used.

A method of using the steel column welding curing device 1 will be described. As shown in FIG. 4, at the joint between the steel columns 9, 9, two sets of curing jigs 2 and 5 and curing jigs 3 and 4 having a U-shape are formed as a pair by the gap cover 8. The part is mounted by means of a magnet 7 around the steel column.

If necessary, the curing jigs 2 and 5 and the curing jigs 3 and 4 are extended or contracted in the front-rear direction according to the size of the steel column 9 using the respective gap covers 8. . The same applies to the left-right direction using the overlapping portion c.

If the corner of the pillar 9 is not a corner but a quarter circle, it can be easily handled by setting a gap burying jig at the corner. As shown in FIG. 3 (c), the gap embedding jig 20 includes a tip contact portion 20a and a fixed portion 20b. The tip contact portion 20a is a relatively soft elastic material such as rubber, and the round portion has no gap. It can be covered, preventing the fall of sparks from gaps. Further, the tip fixing portion 20b can be fixed to the bottom portion a by sandwiching it with an elastic body such as a somewhat hard rubber.

Then, the joints of the steel columns 9, 9 temporarily fixed by the erection piece 10 are welded. In this welding operation, when the spark of welding scatters and falls on the bottom surface a or the inclined surface b of the welding curing device 1 (arrow indicated by a solid line in the figure), the asbestos sheet 6 is provided. The welding spark is caught and does not further jump out of the inclined surface portion b (the arrow indicated by the broken line in the drawing) (secondary scattering). Thus, scattering of the welding spark is prevented, and a fire or the like is prevented.

The second embodiment of the present invention, as shown in FIG. 5, is an embodiment of a curing jig used in the case where the steel beams 11, 11 are connected by welding. This steel beam welding curing device 14
As shown in FIGS. 5 to 7, each is applied from the side of the steel beam 11, and the side wall 12 a and the inclined surface 1
The side wall 12a is provided with a notch 12d that bites and locks the flange 11a of the steel beam.

An asbestos sheet 6 is adhered to the inner surfaces of the side wall 12a, the inclined surface 12b, and the bottom surface 12c. Also, at the end on the steel beam side on the upper surface of the bottom portion 12c,
A magnet 7 is attached. In this manner, each curing jig 12 is formed, and a pair of the curing jigs 12 constitutes a steel beam welding curing device 14.

The curing jig 12 is used as a pair at the upper flange and the lower flange of the steel beam 11, and is attached by the magnet 7. Then, the joining portion 13 is welded, and the welding spark falls on the curing jig 12 and is captured by the asbestos sheet 6 to prevent secondary scattering.

In the third embodiment of the present invention, as shown in FIG. 8, the curing jig in the curing device 16 is divided into eight in the circumferential direction, and is engaged with the gap cover 8 on each side in the front, rear, left and right directions. And one set. That is, the curing jigs 2a, 5a
The curing jigs 2 and 5, the curing jigs 3a and 4a, and the curing jigs 3 and 4 constitute a total of four slidable curing jigs. Other configurations such as the bottom surface, the inclined surface, and the asbestos sheet are the same as those in the above-described embodiment.

According to the third embodiment, although the curing device 16 is composed of four parts as a whole, the sliding amount of the curing jig can be increased by the gap cover 8. The variable range corresponding to the size of the column 9 can be increased. Also, each set of curing jigs is not a substantially U-shaped form, but a linear product form as a whole, which is compact and facilitates storage and transportation of parts.

As described above, since the welding curing devices 1, 14, and 16 for the steel members are attached to the steel columns, the steel beams, and the like by the magnets 7, the preparation for the operation is simple, and no labor is required. The presence of the sheet allows welding spark 2
Secondary scattering is prevented.

[0032]

As described above, the method for curing and curing a steel frame member according to the present invention includes a bottom surface, an inclined surface, and a magnet provided on the bottom surface around a welded portion of a steel frame member to be welded. Since a curing jig composed of an asbestos sheet provided on the bottom surface and the inclined surface is attached, a welding spark is received by the curing jig, and the welding spark is captured by the asbestos sheet to prevent scattering. The asbestos sheet surely prevents the secondary scattering of the welding spark, and has an excellent effect of eliminating the danger such as fire accompanying the welding work.

In the case where the steel frame member is a steel column, the upper part of the inclined surface in the vertical direction is at least the same as or higher than the position of the welded portion. Can be captured reliably.

The curing device of the present invention is formed by combining a curing jig composed of a bottom portion, a slope portion, a magnet provided on the bottom portion, and an asbestos sheet provided on the bottom portion and the slope portion. This has an excellent effect that the welding spark can be reliably captured by the asbestos sheet.

Further, since the curing jig is provided with a gap cover or an overlapping portion which covers a gap when the curing jig is slid in the front-rear and left-right directions, it is possible to easily cope with a change in the size of the steel frame member. It has an excellent effect that it can be performed.

Further, since the curing jig is divided into a plurality of pieces in the circumferential direction, and two of the curing jigs are engaged with one set via the gap cover, the number of parts is reduced, and the welding work is reduced. In the field, there is an excellent effect that the handling becomes easy and the parts management / storage becomes easy.

[Brief description of the drawings]

FIG. 1 is a perspective view of a steel column welding curing device 1 according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a perspective view of the gap cover 8 (a), a partially detailed view (b), and a perspective view of the gap embedding jig 20 at a corner (c).

FIG. 4 is an explanatory view showing a use state of the steel column welding curing device 1 according to the present invention.

FIG. 5 is an explanatory diagram showing a use state of a steel column welding curing device 14 according to a second embodiment.

FIG. 6 is a sectional view of a curing jig 12 in the steel column welding curing method device 14;

FIG. 7 is a plan view of a curing jig 12 in the steel column welding curing method device 14;

FIG. 8 is a perspective view of a curing device 16 according to a third embodiment of the present invention.

FIG. 9 is an explanatory view showing a state of a conventional welding operation.

[Explanation of symbols]

1,16 steel column welding curing device, 2,3,4,5 curing jig, 6 asbestos sheet, 7 magnet, 8 gap cover,
8a, 8b long hole, 8c enlarged hole, 9 steel column, 10
Election Piece, 11 Steel Beam, 12 Curing Jig, 13 Connection, 14 Welding Curing Device for Steel Beam, 20
Clearance jig.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shuji Miyuki 1-7-1 Kyobashi, Chuo-ku, Tokyo Toda Construction Co., Ltd. Tokyo Branch (72) Inventor Hideo Yamamoto 1-7-1 Kyobashi, Chuo-ku, Tokyo Tokyo Branch of Toda Construction Co., Ltd.

Claims (5)

[Claims] 1. A curing comprising a bottom portion, a slope portion, a magnet provided on the bottom portion, and an asbestos sheet provided on the bottom portion and the slope portion around a welded portion of a steel member to be welded. A method for welding a steel member by attaching a jig, receiving the welding spark with the curing jig, and capturing the welding spark by the asbestos sheet to prevent the scattering. 2. The method according to claim 1, wherein when the steel frame member is a steel column, the vertical upper position of the inclined surface is at least the same as or higher than the position of the welded portion. 3. The method for welding and curing steel members according to item 1. 3. A curing jig comprising a bottom portion, a slope portion, a magnet provided on the bottom portion, and an asbestos sheet provided on the bottom portion and the slope portion. Welding curing device for steel members. 4. The welding of a steel frame member according to claim 3, wherein the curing jig is provided with a gap cover or an overlapping portion for covering a gap when the curing jig is slid in the front-rear and left-right directions. Curing device. 5. The curing jig is divided into a plurality of pieces in the circumferential direction, and two of the curing jigs are separated by a gap cover.
The welding curing device for steel members according to claim 4, wherein the device is engaged with a set.