JPH04129597U - end tab device - Google Patents

Abstract

(57) [Summary] [Purpose] To facilitate attachment and detachment of end tabs to base metal during welding work, and to enable reuse of end tabs. [Structure] The end tab 8 includes a main body 9 made of a material that does not melt during welding work, and a leaf spring 10 provided on the main body 9.
and has. During welding work, the leaf springs 10 of the end tabs 8 are fitted onto both sides of the welded portion of the flange portion 3 of the beam material 2 from the outside. In this state, one end tab 8
Start welding between the main body 9 and the column, and then weld the flange part 3.
After welding to the column, the welding work is completed between the main body 9 of the other end tab 8 and the column. When the welding work is completed, the leaf spring 10 of the end tab 8 is pulled out from the flange portion 3 of the beam member 2 outward.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to an end tab device.

0002

[Conventional technology]

Conventionally, welded structures, such as building frames, are generally made of square steel or is an assembly in which H-shaped steel, etc., are welded to a column such as H-shaped steel as beam materials and girder materials. It is. When welding H-shaped steel to the column, welding at the flange of the H-shaped steel A pair of end tabs facing the column are provided on both sides of the connecting part, and one end tab and Start welding between the columns, and after welding the flange of the H-shaped steel and the column, weld the other side. Finish the welding work between the end tab and the column body, and remove the end tab after welding work is complete. I try to remove it. In this way, welding defects that tend to occur at the start and end of welding work can be avoided. Good welding work can be performed without welding between the flange of H-shaped steel and the column. By the way, in the past, end tabs were made of steel and were used during welding work. was temporarily welded to the flange of the H-shaped steel, and was thermally cut after the welding work was completed. .

0003

[Problem that the idea aims to solve]

Therefore, in the above conventional method, the attachment of the end tab to the flange part of the H-shaped steel is difficult. There is a problem that it is troublesome to remove and it is difficult to perform welding work efficiently, and the frame to be welded is It is necessary to prepare end tabs according to the number of lunges, which increases the cost. There was also the problem. The purpose of the present invention is to provide an end tab device that can solve the above problems. .

0004

[Means to solve the problem] In order to achieve the above purpose, the feature of this invention is to weld one base metal. The welding part faces the welding part of the other base metal and serves as the welding work start part and welding work end part. In those equipped with end tabs, The end tab faces the other base metal and is made of a material that will not melt during welding. and a detachable tool provided on the main body to removably hold one of the above-mentioned base materials. The point is that it has the following. Note that the attachment/detachment tool may be a plate spring that detachably holds one of the base materials. Further, the attachment/detachment tool includes a fixing fitting that is fitted onto one of the base materials, and a fastening tool, and the fixing fitting is fitted onto one of the base materials. The tool has a pair of opposing parts facing both clamping surfaces of one base material, and one of these opposing parts A fastener that can move forward and backward into the clamping surface of one base material is screwed onto the other side, and the fastener By fastening one of the two to the base material, the other opposing parts of the fastener and fixing metal Sometimes the base material on either side is pinched.

[0005]

[Effect]

During welding work, attach the end tab to the welded part of one base metal, and Start welding between the body and the other base metal, and after welding both base metals, Finish the welding operation between the body and the other base metal. When welding is complete, remove the end tab from the weld on one of the base metals and remove the Reattach the dowel to the welded part of the base metal to be welded next and repeat the above welding process. .

[0006]

【Example】

Hereinafter, the first embodiment of the present invention will be explained based on the drawings of FIGS. 1 to 5. The column body is exemplified as a base material for one side, and is made of square steel, H-shaped steel, etc. 2 is a beam material exemplified as the other base material, and in the example, it is made of H-beam steel and has a flange. A V-shaped groove 4 is formed at the longitudinal end of the groove portion 3, that is, at the welded portion. A scalloping process ( A scallop 6 is formed by a fan-shaped notch process.

[0007] 8 is an end tab, which can be attached and detached to both sides of the welded part in the flange part 3 of the beam material 2. It is equipped with a main body 9, a detachable tool 10, and bolts and nuts 11. . The main body 9 is in contact with each side of the welded part of the flange part 3, and is connected to the column 1. A rectangular groove 12 is formed at the opposing tip and is flush with the rectangular groove 4. The thickness of the main body 9 is the same as the thickness of the flange part 3 of the beam material 2, and its front and back surfaces are flat. The front and back surfaces of the hinge portion 3 are flush with each other. Note that the thickness of the main body 9 is equal to that of the flange portion 3 of the beam material 2. thickness, so that the surface of the main body 9 protrudes beyond the surface of the flange portion 3. There is also. The main body 9 is made of a material that does not melt during welding, such as copper material or ceramics. It is formed by etc. The attachment/detachment tool 10 has a main body 9 detachably attached to the flange portion 3, and has a U-shaped plate. It is considered a spring. The attachment/detachment tool 10 is fitted onto the base of the main body 9, and its outer surface and front and back surfaces are attached to the base of the main body 9. In addition to contacting the outer surface and front and back surfaces, it can be attached to and detached from the main body 9 using bolts and nuts 11. It is currently fixed. The upper and lower inner parts of the attachment/detachment tool 10 protrude more inward than the main body 9. It is also formed in a wavy shape, and the distance between the upper and lower inner edges is inwardly It is made to gradually become larger as it goes towards the end, and can be attached to and detached from the outer end of the flange portion 3. It is freely fitted onto the outside and clamps the flange portion 3.

[0008] 17 is a rectangular steel backing plate, which is used to weld the beam 2 to the column 1. The main part of the flange part 3 and the end tab 8 is passed through the scallop 6 of the tab part 5. It is brought into contact with the back surface 10 of the joint end of the body 9 and welded to the flange portion 3. In addition, at both corners of the surface of the backing plate 17 that comes into contact with the back surface 10 of the flange portion 3, Appropriate chamfering may be applied.

[0009] According to the embodiment configured as described above, when welding the beam material 2 to the column body 1, First, as shown in FIGS. 1 to 3 and 5, the backing plate 17 is attached to the flange portion 3 of the beam material 2. Weld by contacting the back side of the welded part. Next, as shown in FIG. , the attachment/detachment tool 10 of the end tab 8 is fitted from the outside. Then, one end of the backing plate 17 in the width direction is brought into contact with the column 1, and the flange of the beam 2 is 3 and the groove 12 of the main body 9 of the end tab 8 are opposed to the column 1 through a small gap. let In this state, start welding between the groove 12 of the main body 9 of one end tab 8 and the column 1. After welding the groove 4 of the flange part 3 and the backing plate 17 to the column 1, weld the other Welding work is completed between the groove 12 of the main body 9 of the end tab 8 and the column 1. In this case, the body 9 of the end tab 8 is made of a material that does not melt during welding work. The main body 9 is not welded to the column 1 because it is formed. When the welding work is completed, the attachment/detachment tool 10 of the end tab 8 is attached to the flange of the beam material 2. Pull out the end tab 8 from the joint part 3 outward, and attach the end tab 8 to the flap of the beam material 2 to be welded next. It is then reattached to the hinge part 3 and the welding process described above is repeated.

0010 As mentioned above, during welding work, the attachment/detachment tool 10 for the end tab 8 is It is only necessary to fit and remove the end tab 8 into the flange part 3 of the beam 2 from the outside. Welding to the flange part 3 one by one or thermally cutting from the flange part 3 There is no need to repeat the welding process, making it easier and more efficient to weld the end tab 8. Since it can be used for There is no need to prepare a dotab, and costs can be reduced. In addition, if the groove 12 of the main body 9 of the end tab 8 is damaged, the grip The groove 12 can be easily returned to its original state by grinding with a grinder. I can do it.

[0011] FIG. 6 shows a second embodiment of the present invention, in which the attaching/detaching tool 10 is connected to the fixing fitting 20 and It is composed of a knot 21. The fixing fitting 20 has a U-shape and is fitted onto the main body 9 to cover its outer surface and front and back surfaces. The surface is in contact with the outer surface and front and back surfaces of the main body 9, and the main body is secured by the bolts and nuts 11. It is detachably fixed to the body 9. The inner part of the fixing fitting 20 is on the inner side than the main body 9. It protrudes from the outside of the flange portion 3 of the beam material 2 and is removably fitted to the outside of the flange portion 3 of the beam material 2, and portions are opposed to the front and back surfaces of the flange portion 3. A thumbscrew is used as the fastener 21, and the fastener 21 is attached to a flap in the fixing metal fitting 20. It is screwed into the part facing the surface of the lunge part 3 in a vertically removable manner. By being fastened to the flange part 3, it comes into contact with the surface of the flange part 3, The flange part cooperates with the part of the fixture 20 that faces the back surface of the flange part 3. Hold 3.

0012 Note that the width and thickness of the end tab 8 and backing plate 17 are determined based on the dimensions of each part of the beam material 2, as in the past. The bevel 4 of the flange part 3 of the beam material 2 and the main body of the end tab 8 are determined according to the law. The shape and dimensions of the groove 12 of 9, as well as the gap between the web portion 5 of the beam 2 and the column 1, etc. It is determined in the same way as before.

[0013]

[Effect of the idea]

As detailed above, according to the present invention, the end tab is inserted into the base metal during welding work. Easy to attach and detach, the end tabs can be welded individually to the base metal or heat cut from the base metal. There is no need to cut or cut, making welding work easier and more efficient. can be used repeatedly, so you can use the engine according to the number of base materials to be welded, unlike conventional methods. There is no need to prepare a dotab, and costs can be reduced. According to claims 2 and 3, the end tab can be attached to and detached from the base material with a single touch. At the same time, the structure of the attachment/detachment tool is also simple.

[Brief explanation of drawings]

FIG. 1 is a front view showing a first embodiment of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a perspective view of the same.

FIG. 4 is a sectional view taken along line A-A in FIG. 2;

FIG. 5 is a front view after welding is completed.

FIG. 6 is a sectional view showing a second embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1... Column body (base material), 2... Beam material (base material), 3... Flange part, 8... End tab, 9... Main body, 10... Detachable tool, 17...
Backing material, 20...fixing metal fittings, 21...fastening tools.

Claims (3)

[Scope of utility model registration request] Claim 1: A welded part of one base metal is provided with an end tab that faces the welded part of the other base metal and serves as a welding work start part and a welding work end part, the end tab having:
An end tab device characterized by having a main body that faces the other base material and is made of a material that does not melt during welding work, and an attachment/detachment tool that is provided on the main body and that detachably holds the one base material. . 2. The end tab device according to claim 1, wherein the attachment/detachment tool is a plate spring that detachably holds one of the base materials. [Claim 3] The attachment/detachment tool includes a fixing metal fitting that is externally fitted onto one of the base materials, and a fastener, and the fixing metal has a pair of opposing parts facing both clamping surfaces of one of the base metals. A fastener that can move forward and backward with respect to the clamping surface of one of the base metals is screwed into one of these opposing parts, and by fastening the fastener to one of the base metals, the other of the fastener and the fixing metal is The end tab device according to claim 1, wherein one base material is held between the opposing portions.