JPH055294U - Steel column connection structure and temporary fixing tool for welding backing metal used therefor - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] The end of the backing metal fitting for welding can be held with the end of the steel column always protruding by a certain distance. Steel columns can be connected without removing them. [Structure] A hollow steel pillar 1, a welding backing metal fitting 2, a welding backing metal fitting temporary stopper B, and a plate-shaped diamond rough 3 are used. A plurality of temporary fasteners B are attached to the welding backing metal fitting 2 with the end face of the metal fitting 2 supported, and the welding backing metal fittings 2 are fitted into the opening of the steel pillar 1 to temporarily fit the opening end of the steel pillar. By holding the locking piece of the stopper B, the upper end of the welding backing metal fitting 2 is held in a state of protruding for a certain distance, and in this state, the welding backing metal fitting 2 is spot-welded to the steel column 1 and the like 12. After temporarily fixing with, the diaphragm 3 is positioned on this, the steel columns 1 are connected by welding the gap between the steel columns 1 and the diaphragm 3, and the steel columns 1 are connected vertically in the same manner.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  The present invention relates to a structure for connecting steel columns for construction or construction, and a welding backing used therefor. Regarding temporary fittings for metal fittings.

[0002]

[Prior art]

  Generally, hollow square steel column openings are used to connect steel columns in construction or construction. Insert a pair of U-shaped backing metal fittings for welding from the The end of the metal fitting is projected and spot-welded for positioning, and then melted with the steel column. Weld the backing metal for welding and place the diaphragm on the upper surface of this backing metal for welding. The steel column and the diaphragm are welded together to connect the steel columns vertically. ing. Then, as a method of temporarily fixing the backing metal for welding to the conventional steel column, Position by hand so that the end of the backing bracket for contacting projects a certain distance from the open end of the steel column Perform spot welding, for example, using a shrimp vise to stop and fix at several places. The lining metal for welding is temporarily fixed by.

[0003]

[Problems to be solved by the device]

  However, with the conventional method, while measuring with a ruler in one hand, the other Position the end of the backing bracket for welding by hand so that it projects a certain distance from the open end of the steel column. After carrying out the operation, hold the ruler etc. held in one hand in a shrimp vise and squeeze it with only one hand. Since it is necessary to fix it using a vise, it is very troublesome and It may not be possible, and at that time, the end of the welding backing metal There is a problem that it is very difficult to make the distance to be constant.

[0004]   Therefore, the present invention uses a temporary backing metal fitting for welding, Hold the end of the backing metal fitting so that it always projects a fixed distance from the open end of the steel column. It is possible to connect the steel columns without removing the temporary fasteners. Connection structure of steel columns that can be bonded and backing metal fittings for welding It is intended to provide temporary fasteners.

[0005]

[Means for Solving the Problems]

  In order to achieve the above object, the connection structure of steel columns according to the present invention is a hollow steel column. And; a backing metal fitting for welding capable of contacting the inner surface of the steel column; for welding from one end of the contact piece A support piece that can support the end surface of the backing metal fitting is extended almost vertically, and is supported from the other end of the contact piece. Of the backing metal for welding, which is formed by extending a locking piece that can be locked to the tip of the steel column in the opposite direction to the one piece. It consists of a temporary stopper and a plate-shaped diamond rough, and is welded to the support piece of the temporary fastener. While holding the end surface of the metal backing metal fitting, attach multiple temporary fasteners to the welding metal backing metal fitting. Attach this welding backing metal fitting from the opening of the steel column and temporarily fix it to the open end of the steel column. By locking the locking piece of the tool, the upper end of the backing metal for welding is projected for a certain distance. The welding backing metal fitting is temporarily fixed to the steel column by spot welding etc. After that, position the diaphragm on this and melt the gap between the steel column and the diaphragm. The steel columns are connected by contacting with each other, and the steel columns are similarly connected.

[0006]   In addition, in order to achieve the above-mentioned object, the welding backing metal fitting in the present invention is temporarily fixed. The tool has a support piece that can support the end face of the welding backing metal from one end of the contact piece in a substantially vertical direction. Extend and extend a locking piece that can be locked to the tip of the steel column from the other end of the contact piece in the direction opposite to the support piece. It will be installed.

[0007]   Further, due to the effect described later, as a support piece in the temporary fastener, the contact piece and Substantially L-shaped having a support portion and a holding portion so that the end portion of the backing metal for welding can be held. -Shaped one, or as a temporary stopper, clip the holding part of the support piece inward. It is preferable to be bent in the shape of.

[0008]

[Action]

  As described above, according to the connection structure of steel columns and the temporary fastener of the backing metal fitting for welding of the present invention. For example, temporarily support the end face of the welding backing metal with the support piece of the temporary fastener. Attach multiple tools to the welding backing metal fitting and open the welding backing metal fitting in the steel pillar opening. For welding by inserting from the section and locking the locking piece of the temporary fastener to the open end of the steel column Hold the upper end of the backing metal with a certain distance protruding, and in this state, hold the backing for welding. After temporarily fixing the bracket to the steel pillar by spot welding, etc., position the diaphragm on this. Then, the steel columns are connected by welding the gap between the steel columns and the diaphragm. Similarly, steel columns can be connected vertically to form a connected structure of steel columns. .

[0009]   Next, as a support piece in the temporary fastener, the end of the backing metal fitting for welding together with the contact piece. Use a substantially L-shaped one having a support portion and a holding portion so that the portion can be held, Further, as a temporary fastener, the holding portion of the support piece is bent inward in a V shape. If used, the backing metal for welding is placed between the contact piece and the support piece of the temporary fastener. Attach the temporary fixing tool to the welding backing metal fitting by tightly sandwiching the lower end of the tool. You can

[0010]

【Example】

  The details of the present invention will be described with reference to further illustrated embodiments.   The connecting structure A of steel columns has a tapered portion 1a at the tip as shown in FIGS. Hollow steel column 1 and a backing metal for welding, which has a substantially rectangular cross section and can come into contact with the inner surface of the steel column 1. Tool 2, plate-shaped diaphragm 3, temporary fixing tool B for backing metal for welding (hereinafter simply referred to as temporary fixing It is called a tool B. ).

[0011]   The temporary fastener B of the representative embodiment according to the present invention comprises a steel column 1 and a backing metal for welding. The tool 2 can be positioned and temporarily fixed as shown in FIG. 9 are disclosed.   First, as shown in FIG. 6, the temporary fastener B of the first embodiment is arranged such that the abutment piece 4 has one end 4a. Approximately having a supporting portion 5 and a sandwiching portion 6 so as to sandwich the end portion of the welding backing metal fitting 2. An L-shaped support piece 7 is extended substantially vertically, and the support piece 7 extends from one end 4b of the contact piece 4. An engaging piece 8 engaging with the tip 1a of the steel column 1 is extended substantially vertically in the direction opposite to the installation direction. The holding portion 6 of the support piece 7 is bent inward in a V shape. Temporary fastener B It is particularly preferable to use the same material as the steel pillar 1 as the material of the It is also possible to use a material such as stainless steel or aluminum.   The temporary fastener B in the example shown in FIG. 6 has a backing metal for welding from one end 4a of the contact piece 4 as shown in FIG. A substantially L-shaped support having a support portion 5 and a holding portion 6 so that the end portion of the tool 2 can be held. The piece 7 is extended substantially vertically, so that the lower surface of the welding backing metal fitting 2 can be supported. The support piece 7 is formed by extending only the support portion 5 without the holding portion 6. May be. In addition, the temporary fastener B in the illustrated example can be integrally formed by press working. However, in the case of not particularly sticking to the support piece 7 from the end of the contact piece 4, Without extending the locking piece 8, the support piece 7 and the locking piece 8 are provided from the middle of the front surface or the back surface of the contact piece 4. It is also possible to extend.

[0012]   Further, the temporary stopper B of the second embodiment shown in FIG. 7 is substantially the same as the temporary stopper B of the first embodiment. Although it has the same structure, the locking piece 8 is brought into contact with the tapered portion 1a of the steel column 1 as shown in FIG. To be locked by extending diagonally downward so that it does not abut It is the one.

[0013]   In addition, the temporary fastener B of the third embodiment shown in FIG. 8 is the same as the temporary fastener B of the first embodiment. This is an application, and two temporary fasteners B of the first embodiment are arranged in parallel, and the contact pieces 4 and 4 are connected to each other. It is connected by a tie piece 9, and along the corner 10 of the backing metal fitting 2 for welding in FIG. The connecting piece 9 by bending, for example, a corner portion of the backing metal fitting 2 for welding having a substantially U shape in plan view. It is designed to be attached to each side over 10.

[0014]   Moreover, what was shown in FIG. 9 is the temporary fastener B of 4th Example. This temporary fastener B 9 has substantially the same shape as the temporary stopper B of the first embodiment as shown in FIG. Spot welding in a state where it is clamped and attached to the upper end of the metal fitting 2 and held on the steel column 1. After temporarily fixing with 12 etc., remove this temporary fixing tool B and remove it as shown in Fig. 9. Holds the upper end of the backing metal fitting 2 for a fixed distance, that is, protruding a distance m in the figure. It is something that is done.

[0015]   Next, the steel column connection structure A using these temporary fasteners B will be described.   As shown in FIGS. 1 to 3, the connection structure A of the steel columns is a steel column 1, a backing metal fitting for welding. 2, a plate-shaped diaphragm 3 and a temporary stopper B.   The welding backing metal fitting 2 is a strip-shaped member having a substantially quadrangular cross section, and is substantially in a plan view. U-shaped ones or L-shaped ones in a plan view can be adopted. As an example, a temporary stopper B having a substantially U shape in a plan view as shown in FIG. 3 is given as an example. Immediately Then, the connecting structure A of the steel columns is supported by the contact piece 4 of the temporary fastener B as shown in FIG. The lower end of the welding backing metal fitting 2 is sandwiched between the holding pieces 7, and the temporary fastener B is attached as shown in FIG. Attach four each to the backing metal fitting 2 for welding, and open the connection structure A of this steel pillar to open the steel pillar 1. Insert it from the mouth 11 and lock the locking piece 8 of the temporary fastener B to the opening end 11 'of the steel column 1. The upper end of the welding backing metal fitting 2 is projected by a certain distance, that is, by a distance m in FIG. In this state, the lower end of the welding backing metal fitting 2 is, for example, as shown in FIG. After temporary fixing with pot welding 12, position diaphragm 3 on top of this As shown in Fig. 2, the steel column 1 is continuously connected by welding 13 around the gap between the diaphragm 3 and the diaphragm 3. It is a tied one. That is, in this way, the steel columns 1 are similarly connected vertically, It is possible to form the connecting structure A of steel columns as shown in 1.

[0016]   In this manner, the steel column connecting structure A and the temporary fastener B of the representative embodiment according to the present invention are provided. According to this, the temporary stopper B is attached to the backing metal fitting 2 for welding, and the locking piece 8 is opened in the steel pillar 1. The backing metal fitting 2 for welding can be easily and temporarily fixed to the steel column 1 simply by locking it to the end 11 '. You can Moreover, as shown in FIG. That is, since it is held in a state of being projected by a distance m in the figure, the protrusion of the backing metal fitting 2 for welding is held. The distance to be projected can be made constant at all times, forming a highly accurate steel column connection structure A can do. Furthermore, without removing the temporary stopper B, the steel pillar 1 and the diamond flange Since the gaps in the frame 3 are welded 13 around the entire circumference to connect them, wasteful work can be omitted. it can. Further, according to the connecting structure A of the steel columns of the first embodiment, the sandwiching in the support piece 7 is performed. Since the holding portion 6 is bent inward in a V shape, it is supported by the contact piece 4 of the temporary fastener B. The holding portion 6 of the holding piece 7 holds the backing metal fitting 2 for welding in close contact with the side surface thereof. Thus, the welding backing metal fitting 2 does not come off from the temporary fastener B.

[0017]

[Effect of device]

  Since the present invention is configured as described above, it has the following effects.   According to the connection structure of steel columns according to claim 1 and the temporary fastener according to claim 4, a backing for welding is provided. Simply attach the temporary fastener to the metal fitting and lock the locking piece of the temporary fastener to the open end of the steel column. With this, you can easily temporarily attach the backing metal for welding to the steel column. Since the upper end of the tool is held with protruding for a certain distance, the protrusion of the backing metal for welding The protruding distance can be made constant at all times to form a highly accurate connected structure of steel columns. It is also possible to remove the gap between the steel column and the diaphragm without removing this temporary stopper. Since they are connected by welding all around, wasteful work can be omitted.

[0018]   According to the connection structure of steel columns according to claim 2 and the temporary fastener according to claim 5, a backing for welding is provided. Support the lower end of the metal fitting with the support part of the support piece of the temporary fastener and support it with the contact piece. Since it is clamped by the clamping part of the holding piece, the backing metal for welding does not come off from the temporary stopper. Yes.

[0019]   According to the connection structure of steel columns according to claim 3 and the temporary fixing tool according to claim 6, it is possible to provide the support piece only. Since the holding part that is bent inward is bent inward, it supports the abutting piece of the temporary fastener. Since it is held in close contact with the side surface of the backing metal fitting for welding by the holding part of the piece, It is effective.

[Brief description of drawings]

FIG. 1 is a perspective view of a connection structure of steel columns.

FIG. 2 is a partial vertical cross-sectional view of a connection structure of steel columns when a temporary fastening tool for a backing metal fitting for welding according to the first embodiment is used.

FIG. 3 is an exploded perspective view of the welding backing metal fitting of the first embodiment in which the welding backing metal fitting is held in the opening of the steel column by using the temporary fastener of the welding backing metal fitting.

FIG. 4 is a vertical cross-sectional view showing a state in which the welding backing metal fitting is held in the opening of the steel column by using the temporary fastening tool of the welding backing metal fitting of the first embodiment.

FIG. 5 is a vertical cross-sectional view showing a main part of the welding backing metal fitting of the first embodiment in which the welding backing metal fitting is held in the opening of the steel column by using the temporary fastener of the welding backing metal fitting.

FIG. 6 is a perspective view of a temporary fixing tool for the backing metal fitting for welding according to the first embodiment.

FIG. 7 is a side view of a temporary fastener for a backing metal fitting for welding according to a second embodiment.

FIG. 8 is a rear view of the temporary fixing tool for the backing metal fitting for welding according to the third embodiment.

FIG. 9 is a vertical cross-sectional view showing a main part of a state in which the welding backing metal fitting is held in the opening of the steel column by using the temporary fastening tool for the welding backing metal fitting of the fourth embodiment.

[Explanation of symbols]

A Steel column connection structure B Temporary fastener for backing metal fittings for welding 1 steel pillar 2 Backing metal fittings for welding 3 diaphragm 4 contact piece 5 Support 6 clamping part 7 Support pieces 8 locking pieces 9 connecting pieces 10 corners 11 opening 12 spot welding 13 welding

Claims (6)

[Scope of utility model registration request] 1. A hollow steel column, a welding backing metal fitting capable of abutting the inner surface of the steel column, and a support piece capable of supporting an end surface of the welding backing metal fitting from one end of the abutting piece in a substantially vertical direction. Temporary stopper for backing metal fitting for welding, which is extended and extends from the other end of the abutting piece in the direction opposite to the supporting piece at the tip of the steel column, and a plate-shaped diaphragm Attaching a plurality of temporary fasteners to the welding backing metal fitting while supporting the end surface of the welding backing hardware with the support piece of the temporary fastener, and opening the welding backing metal fitting to the opening of the steel column. The back end of the welding backing metal fitting by holding the upper end of the welding backing metal fitting protruding for a certain distance by locking the locking piece of the temporary fastener to the open end of the steel column. After temporarily fixing the steel column to the steel column by spot welding, etc., position the diaphragm on this and attach the steel column to the diaphragm. Connecting the steel column by welding gap Likewise connecting structure of the steel column formed by connecting steel columns vertically. 2. A temporary L-shaped support piece having a substantially L-shape having a supporting portion and a holding portion so that the end portion of the welding backing metal fitting can be held by the abutting piece. The connected structure of steel columns according to claim 1. 3. The connection structure of steel columns according to claim 2, wherein the holding portion of the support piece is bent inward in a V shape as the temporary fastener. 4. A support piece extending substantially vertically from one end of the contact piece and capable of supporting the end surface of the backing metal for welding, and extending from the other end of the contact piece to the tip of the steel column in the opposite direction to the support piece. Temporary stopper for backing metal fittings for welding, which is formed by extending locking pieces that can be locked. 5. The substantially L-shaped support piece is used as a support piece having a support portion and a sandwiching portion so as to sandwich the end portion of the backing metal fitting for welding with the contact piece. Temporary stopper for backing metal fittings for welding. 6. The temporary fixing tool for the backing metal fitting for welding according to claim 5, wherein the holding portion of the support piece is bent inward in a V shape.