JP2005232963A - Splice plate installation metal fittings and cylindrical body manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an installation method splice plate installation metal fittings capable of fixing and turning the splice plates to be applied to the brackets or beams of a steel-frame column. <P>SOLUTION: The splice plate installation method of splice plate installation fittings according to this invention is characterized in that the installation fittings consist of a cylindrical body (2a) having a lid (5a) at one end another cylindrical body (2b) having a lid (5b) at the other end; and a bar (3) placed by being inserted through the holes (4a, 4b) of these cylindrical means (2a, 2b) with lids, that this bar (3) prepares splice plate installation fittings that are longer than the hole depth of a cylindrical body shorter than that of the other cylindrical means, that one cylindrical means, with its lid at the top, is welded with the base material and one splice plate, and the other cylindrical body located below one cylindrical means, with its lid at the bottom, is welded with the base material and the other splice plate, and that the bar (3) is placed through the inner holes (4a, 4b) of the two cylindrical bodies (2a, 2b). <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a mounting structure for an attachment plate mounting bracket for attaching an attachment plate to a steel column bracket, beam, or the like used in the construction of a construction frame on site.

  As for the steel frame of a building, as shown in FIG. 13, the steel column 10 and the beam 12 etc. which welded the bracket 11 are manufactured by the factory, and these are assembled in the construction site. At the construction site, the steel column 10 is first set up and fixed, and the beams 12 temporarily fixed with the attachment plates 14b, 14a, and 14c are transported by a crane and brought into contact with the bracket 11 of the steel column 10, As shown in FIG. 14, the beam 12 is fixed to the bracket 11 by applying the abutting plates 14 a to the butted portions of the webs 13 a and 13 b of the bracket 11 and the beam 12 from both sides and fixing them with bolts. Then, after removing the temporary fixing bolts temporarily fixing the attachment plate 14b to the beam 12, the attachment plate 14c is applied from below to the butted portions of the bracket 11 and the flanges 15a and 15b of the beam 12 as shown in FIG. Thus, the beam 12 is fixed to the bracket 11 with bolts.

  Conventionally, in order to apply the attachment plate 14a to the abutting portions of the web 11a and 13b of the bracket 11 and the beam 12 from both sides, the bolt of the attachment plate 14a temporarily fixed by an operator is removed and moved to a predetermined position. Then, the position of the hole was adjusted and a bolt was inserted into the hole and fixed. However, the operation of transporting and attaching the attachment plate 14a is very dangerous because the attachment plate 14a is heavy and can be 25 kg or more, and the work place is high. It was.

  Therefore, the attachment plate 14a is attached to the web 13a of the bracket 11 of the steel column 10 with an attachment as shown in FIG. 16, and the beam 12 is abutted against the bracket 11 at the construction site, and then the attachment plate 14a is attached. It is constructed by a method of rotating around the bolt and applying the contact plate 14a from both sides to the butted portions of the web 11a and 13b of the bracket 11 and the beam 12 and fixing with the bolt. However, this fixture is expensive to manufacture, requires a lot of man-hours, and the welding length is determined to be 40 mm or more by the Architectural Institute of Japan standard (JASS 6-1996). There were drawbacks such as (undercut etc.).

  It is an object of the present invention to provide an attachment structure for an attachment plate mounting bracket that can fix and rotate an attachment plate that is fixed to a bracket or beam of a steel column.

The above object can be achieved by the attachment structure of the attachment plate attachment fitting of the present invention having the following configurations (1) to (9).
(1) A cylindrical body (2a) having a lid (5a) at one end, a cylindrical body (2b) having a lid (5b) at the other end, and a cylindrical body having these lids ( 2a, 2b) is formed of a rod-like body (3) that enters the hole (4a, 4b), and this rod-like body (3) is a cylindrical body having a lid whose length is shallower. Prepare an attachment plate mounting bracket that is longer than the depth of the hole, with one cylindrical body on one side of the base material and the attachment plate with the lid facing up, and the other cylindrical body on the bottom And welded to the other of the base material and the attachment plate in a state of being disposed below the one cylindrical body, and into the holes inside the two cylindrical bodies (2a, 2b) (4a, 4b) The attachment structure of the attachment plate attachment metal fitting characterized by containing the said rod-shaped body (3).
(2) A cylindrical body (2a) having a lid (5a) at one end, a cylindrical body (2b) having a lid (5b) at the other end, and a cylindrical body having these lids ( 2a, 2b) is formed of a rod-like body (3) that enters the hole (4a, 4b), and this rod-like body (3) is a cylindrical body having a lid whose length is shallower. Two attachment plate mounting brackets that are longer than the depth of the hole are prepared, and an attachment plate mounting bracket mounting structure in which a pair of upper and lower attachment plate mounting brackets are attached to a base material and an attachment plate, One cylindrical body of the attachment plate mounting bracket with the lid facing up, one of the base material and the attachment plate, the other cylindrical body with the lid down, and the one below the cylindrical body Are welded to the other of the base material and the attachment plate, respectively, in the holes inside the two cylindrical bodies (2a, 2b) (4a, 4b) and the rod-shaped body (3) And one cylindrical body of the lower attachment plate mounting bracket with the lid on the other side of the base material and the attachment plate, the other cylindrical body with the lid on the bottom, One rod is welded to one of the base material and the attachment plate in a state of being disposed below the cylindrical body, and (4a, 4b) the rod-shaped body into the holes inside the two cylindrical bodies (2a, 2b). (3) is included, and the attachment structure of the attachment plate mounting bracket is characterized.
(3) The attachment plate mounting bracket according to (1) or (2), wherein the rod-like body (3) has an outer diameter that is 1 mm or more smaller than the diameter of the hole (4a, 4b) of the cylindrical body (2a, 2b). Mounting structure.
(4) The rod-like body (3) has a length equal to or less than the total depth of the holes (4a, 4b) of the cylindrical body (2a, 2b) having two lids and a deeper hole. A mounting structure of the attachment plate mounting bracket according to any one of the above (1) to (3), which is 20 mm or more longer than the depth of the hole of the cylindrical body having the lid.
(5) A cylindrical body (2a) having a lid (5a) at one end, a cylindrical body (6) without a lid, and a cylindrical body (2b) having a lid (5b) at the other end. And a cylindrical body (2a, 2b) having these two lids and a rod-shaped body (3) that enters the cylindrical body (6) without the lid. Prepare attachment plate mounting bracket that is longer than the total depth of the hole depth of the cylindrical body with the shallower depth and the depth of the hole (7) of the cylindrical body (6) with no lid The cylindrical body with one lid is in the shape of the base with the lid facing up, and the cylindrical body with the other lid is in the form of sandwiching the cylindrical body without the lid with the lid down Each of the three cylindrical bodies (2a, 2b) is welded to the base material in a state of being arranged below the cylindrical body having the one lid, and the cylindrical body without the lid is welded to the attachment plate. 6) In the inner hole (4 a mounting structure of an attachment plate mounting bracket, wherein the rod-shaped body (3) is contained in a, 4b, 7).
(6) The rod-shaped body (3) has an outer diameter that is 1 mm or more smaller than the diameter of the holes (4a, 4b, 7) of the tubular body (2a, 2b) having the lid and the tubular body (6) without the lid. (5) The attachment plate mounting bracket mounting structure according to the above.
(7) The rod-shaped body (3) has a total length of the cylindrical body (2a, 2b) having two lids and the holes (4a, 4b, 7) of the cylindrical body (6) without the lid. 20 mm or more longer than the total length of the depth of the hole (7) of the cylindrical body (6) having a lid with a depth equal to or less than the depth and having a lid with a deeper hole depth. (5) or (6) attachment plate mounting bracket mounting structure.
(8) The attachment plate mounting bracket according to any one of the above (1) to (7), wherein the lid (5a, 5b) is configured by a press-fitted article press-fitted into the cylindrical body (2a, 2b). Mounting structure.
(9) The attachment structure of the attachment plate attachment fitting according to (8), wherein the press-fitting object is a hexahedron (8).

The attachment structure of the attachment plate mounting bracket of the present invention has the following excellent effects due to the above configuration.
(1) By adopting the structure of the present invention, the minimum weld length of 40 mm determined by the Architectural Institute standards can be secured, so that the safety of the building can be secured without impairing the material of the base material.
(2) Since attachment welding is easy, no welding defect occurs.
(3) The rotational movement is smoother than conventional products.
(4) The amount of steel material to be used can be reduced as compared with conventional products.
(5) The structure is simple and easy to manufacture, and particularly those that are press-fitted with a lid are easy to manufacture and the manufacturing cost is low.
(6) Since a cylindrical body is used, a gap (cross section is approximately Δ) necessary for welding is formed between an attachment plate, a web, a flange, and the like that are fixed by welding, so that welding is easy.
(7) Since the fitting plate can be welded after fixing the attachment plate to the beam with bolts (which is generally a treatment to be performed regardless of whether or not the bracket is used) A state where the mounting accuracy with the attachment plate is good can be maintained.
(8) Even if the bolt that temporarily fixes the attachment plate and the beam material is opened at the time of erection, the attachment plate is firmly welded to the beam material via the metal fitting, so there is no risk of dropping. Therefore, the safety at the time of erection can be ensured. Further, even if the beam is lifted with a crane with the temporary fixing bolts removed, the attachment plate does not fall, so it is safe because there is no need to remove the temporary fixing bolts at high places.
(9) Since this metal fitting is welded to the wooden end of the attachment plate (the rib = thickness portion), it does not become an obstacle at the time of high-strength bolting work.

  First, an attachment plate mounting bracket used in an attachment plate mounting bracket mounting structure according to an embodiment of the present invention will be described with reference to the drawings. First, the attachment plate mounting bracket according to the first example will be described. FIG. 1 is a front view of the attachment plate mounting bracket of the first embodiment of the present invention, and FIG. 2 is a front view of a cylindrical body having a lid at one end of the attachment plate mounting bracket of FIG. (A), a side view (b), and FIG. 3 are a front view (a), a side view (b), and FIG. 4 of the cylindrical body having a lid at the other end. Front view (a) and side view (b) of FIG. 5 and FIG. 5 are views for explaining a method of manufacturing a cylindrical body having a lid at the end. As shown in FIGS. 1 to 4, the attachment plate mounting bracket 1 a of the first example includes a cylindrical body 2 a having a lid 5 a at one end, and a cylindrical body 2 b having a lid 5 b at the other end. It is composed of a rod-shaped body 3 that fits into a hole in a cylindrical body having these lids, and is used for two or more at a time when the attachment plate is large and heavy. .

  The cylindrical body 2a having a lid at one end has a shape in which a lid 5a is provided at one end of the tube as shown in FIGS. 2 (a) and 2 (b). Even if the whole 4a is covered with the lid 5a or partly covered, it is sufficient if the rod-like body 3 entering inside does not pass through. The lid 5a may be fixed by welding, screws, or the like, or may be manufactured by cutting a cylindrical body, and a hexahedron 8 is press-fitted into one end of the tube as shown in FIG. Then, it may be fixed, or a part of this press-fitted hexahedron 8 may be welded and fixed to the pipe.

  Further, the cylindrical body 2b having a lid at the other end has a shape in which a lid 5b is provided so as to cover the other end of the hole 4b of the tube as shown in FIGS. 3 (a) and 3 (b). It may be of the same shape as the cylindrical body 2a having a lid at one end, or may have a different shape and size, such as different dimensions of each part. A cylindrical body 2a having substantially the same shape and dimensions as those of the cylindrical body 2a is simple and preferable. The cylindrical body 2b having a lid at the other end can be manufactured by the same method as the manufacturing method of the cylindrical body 2a having a lid at the one end.

  As shown in FIGS. 4 (a) and 4 (b), the rod-like body 3 of the attachment plate mounting bracket 1a of the first example may be a cylindrical body or a tubular body having a circular outer periphery. . This rod-shaped body 3 has an outer diameter smaller than the diameter of the smaller one of the holes 4a and 4b of the cylindrical body 2a having a lid at one end and the cylindrical body 2b having a lid at the other end, Preferably, it has an outer diameter smaller than 1 mm. Thus, by reducing the diameter of the rod-shaped body 3 by 1 mm or more, even if the attachment plate 14 is fixed by welding to the attachment plate mounting bracket 1 a fixed to the beam 12 by welding, the attachment plate is left and right by 1 mm or more. It is because it can move.

  Moreover, if the length of this rod-shaped body 3 is longer than the depth of the hole of the cylindrical body with a shallow hole, the length of the holes 4a and 4b of the cylindrical bodies 2a and 2b having two lids The total depth may be greater than or equal to, but preferably less than or equal to the total depth of the holes 4a and 4b of the cylindrical bodies 2a and 2b having two lids, for example, 90 mm if the depths of the holes 4a and 4b are both 45 mm. In the following, when the depths of the holes 4a and 4b of the cylindrical bodies 2a and 2b having two lids are different (actually different in all cases), the depth of the holes is deep. It is longer than the depth of the hole of the cylindrical body by 20 mm or more. The length of the rod-like body 3 is not less than the total depth of the holes 4a and 4b of the cylindrical bodies 2a and 2b having two lids, and the interval between the cylindrical bodies 2a and 2b having two lids is set. If it is long, it can be used, but it becomes unstable because the interval is too wide. On the other hand, if the rod-like body 3 has a length equal to or less than the total depth of the holes 4a and 4b of the cylindrical bodies 2a and 2b having two lids, the cylindrical body 2a and lid having the lids as shown in FIG. This is because at least the attachment plate can be moved up and down by an amount spaced apart from the cylindrical body 2b having a gap. Further, the lower limit of the length of the rod-shaped body 3 can be used if it is longer than the depth of the hole in the cylindrical body with the shallower hole, but 20 mm or more than the depth of the hole in the cylindrical body with the deeper hole. When the distance between the two cylindrical bodies 2a and 2b is increased by about 5mm, the longer one will be inserted into the cylindrical body with the shallower hole by about 15mm. Because you can. However, if the length is equal to or less than the total depth of the holes 4a and 4b of the cylindrical bodies 2a and 2b having two lids, the longer one is preferable because it is stable.

  Next, the attachment structure of the attachment plate mounting bracket 1a according to the first embodiment of the present invention will be described with reference to FIGS. 6 and 7. The two attachment plate attachment brackets 1a are used in the upper part. The lower cylindrical body 2b having the lid 5b of the attachment plate mounting bracket 1a and the upper cylindrical body 2a having the lid 5a of the attachment plate mounting bracket 1a used below are fixed to the web 13b of the beam 12 by welding. The upper cylindrical body 2a having the lid 5a of the attachment plate mounting bracket 1a used in the lower portion and the lower cylindrical body 2b having the lid 5b of the attachment plate mounting bracket 1a used in the lower portion are the attachment plates 14a. It is fixed by welding as shown in the figure. At this time, as a matter of course, the upper cylindrical bodies 2a and 2a are fixed with the lids 5a and 5a up, and the lower cylindrical bodies 2b and 2b are in a state with the lids 5b and 5b down. It is fixed with. In this fixed state, the rod-like body 3 is already put in the holes of the tubular body 2a and the tubular body 2b. As described above, the lower cylindrical body 2b having the lid 5b of the attachment plate mounting bracket 1a used at the upper portion and the upper cylindrical body 2a having the lid 5a of the attachment plate mounting bracket 1a used at the lower portion are beamed. An upper cylindrical body 2a having a lid 5a of an attachment plate mounting bracket 1a used at the lower portion and a lower cylindrical body having a lid 5b of the attachment plate mounting bracket 1a used at the lower portion. 2b is fixed to the attachment plate 14a in the upper and lower attachment plate mounting brackets when the upper and lower cylindrical bodies 2a and 2b are fixed to the same member. This is because of this. In this sense, the upper cylindrical body 2 a of the upper attachment plate mounting bracket and the lower cylindrical body 2 b of the lower attachment plate mounting bracket may be fixed to the web 13 b of the beam 12. Further, the contact plate 14 a is fixed to the web 13 b of the beam 12 with one or two temporary bolts. After the steel column 10 is erected, the temporary bolt is removed before the beam 12 is abutted against the bracket 11 of the steel column 10, and the attachment plate 14a is expanded as shown by a two-dot chain line in FIG. After that, when the bracket 11 and the beam 12 are brought into contact with each other, the attachment plate 14a is closed, the hole is aligned, and fixed with a bolt. The same applies to the back side.

  Next, the attachment plate mounting bracket of the second example will be described. 8 is a front view of the attachment plate mounting bracket of this second example, and FIG. 9 is a front view (a) and a side view (b) of the cylindrical body 6 without a cover of the attachment plate mounting bracket of FIG. ). The attachment plate fitting 1b of the second example includes a cylindrical body 2a having a lid 5a at one end, a cylindrical body 6 without a lid, and a cylindrical body 2b having a lid 5b at the other end. And the cylindrical bodies 2a and 2b having these two lids and the rod-like body 3 that fits into the cylindrical body 6 without the lid, and one or more when the attachment plate is small and light in weight. It is used.

  The cylindrical body 2a having the lid 5a at one end of the attachment plate mounting bracket 1b of the second example and the cylindrical body 2b having the lid 5b at the other end are attached to the attachment plate of the first example. It is the same as that of the metal fitting, and can be manufactured by the same method. The cylindrical body 6 without a lid is a simple tube having a hole 7 as shown in FIG. The outer diameter of the tube and the diameter of the hole 7 may be substantially the same as or different from the outer diameter of the cylindrical bodies 2a and 2b having a lid at the end and the diameter of the hole 7.

  The shape of the bar 3 of the attachment plate mounting bracket 1b of the second example is the same as that of the attachment plate mounting bracket of the first example. If the length is longer than the total depth of the hole depth of the cylindrical body having the shallow hole depth and the depth (length) of the hole 7 of the cylindrical body 6 without the lid, two pieces are provided. It may be longer than the total depth of the holes 4a, 4b, 7 of the cylindrical body 2a, 2b having a lid and the cylindrical body 6 having no lid, but preferably the cylindrical bodies 2a, 2b having two lids And the length of the hole 4a, 4b, 7 of the cylindrical body 6 without the lid is less than the total depth of the cylindrical body 6 having the lid with the deeper hole depth and the hole of the cylindrical body 6 without the lid. It is 20 mm or more longer than the total length. The reason for limiting the length of the rod-like body 3 in this way is the same reason as described for the attachment plate mounting bracket 1a of the second example.

  Next, the attachment structure of the attachment plate mounting bracket 1b according to the second embodiment of the present invention will be described with reference to FIG. 10. A total of two attachment plate attachment brackets 1b, one on the front and one on the back, are described. The cylindrical body 2a, 2b having the two lids of the attachment plate mounting bracket 1b is fixed to the web 13b of the beam 12 by welding, and the cylindrical body 6 without the lid at the center is attached to the attachment plate 14a. It is fixed by welding as shown in the figure. Similarly, it is fixed to the back surface. At this time, as a matter of course, the upper cylindrical body 2a is fixed with the lid 5a up, and the lower cylindrical body 2b is fixed with the lid 5b down. In this fixed state, the rod-like body 3 is already put in the holes of the tubular body 2a, the tubular body 6 and the tubular body 2b. Further, the contact plate 14 is fixed to the web 13b of the beam 12 with one or two temporary bolts. In use, the temporary bolt is removed after the steel column 10 is erected and before the beam 12 is abutted against the bracket 11 of the steel column 10, and the attachment plate 14 is expanded. Thereafter, when the bracket 11 and the beam 12 are brought into contact with each other, the attachment plate 14 is closed, the positions of the holes are adjusted, and the bolts are fixed with bolts.

Next, an example of actually manufacturing the above attachment plate mounting bracket will be described.
Example 1
Example 1 will be described with reference to FIG. A steel pipe having an outer diameter of 22 mm and an inner diameter of 14 mm is cut to a length of 45 mm to make four pipes, and a 9 × 9 mm square steel material is cut to a length of 9 mm to make four hexahedrons. The hexahedrons were press-fitted one by one into one end of the pipe making to produce cylindrical bodies 2a and 2b having four lids. In addition, a round steel bar having a diameter of 10 mm was cut into a length of 70 mm to form two rod-shaped bodies 3. These were combined as shown in FIG. 11 to produce two attachment plate mounting brackets 1a for one use.

Example 2
A second embodiment of the present invention will be described with reference to FIG. A steel pipe having an outer diameter of 22 mm and an inner diameter of 14 mm is cut to a length of 45 mm to make three pipes, and a 9 × 9 mm square steel material is cut to a length of 9 mm to make two hexahedrons. Cylindrical bodies 2a and 2b having two lids were manufactured by pressing the hexahedrons one by one into one end of two of the three pipes. Further, a round bar having a diameter of 10 mm was cut into a length of 120 mm to produce one rod-like body 3. These were combined as shown in FIG. 12 to produce one attachment plate mounting bracket 1b for one use.

  In the above embodiment of the present invention, the structure in which the attachment plate mounting bracket of the present invention is attached to the beam 12 of the steel column has been described, but it goes without saying that the structure can be attached to the bracket 11.

It is a front view of the attachment plate mounting bracket of the first example. It is the front view (a) and side view (b) of a cylindrical body which have a cover in one edge part of the attachment plate attachment metal fitting of FIG. It is the front view (a) and side view (b) of the cylindrical body which have a cover in the other edge part of the attachment plate attachment metal fitting of FIG. It is the front view (a) and side view (b) of the rod-shaped body of the attachment plate attachment metal fitting of FIG. It is a figure for demonstrating the manufacturing method of the cylindrical body which has a cover in an edge part. It is a front view for demonstrating the attachment structure of the attachment plate attachment metal fitting by 1st embodiment of this invention. FIG. 7 is a plan view for explaining a method of using the attachment plate mounting bracket in the attachment plate mounting bracket mounting structure shown in FIG. 6 with the upper flange removed. It is a front view of the attachment plate mounting bracket of the second example. It is the front view (a) and side view (b) of the cylindrical body 6 without the lid | cover of the attachment plate attachment metal fitting of FIG. It is a front view for demonstrating the attachment structure of the attachment plate attachment metal fitting by 2nd embodiment of this invention. It is a figure for demonstrating the attachment board attachment metal fitting of a 1st example. It is a figure for demonstrating the attachment board attachment metal fitting of a 2nd example. It is a perspective view for demonstrating the place which attaches an attachment plate, and the method of attaching the conventional attachment plate. It is a perspective view which shows the state which attached the attachment board by the conventional method. It is a perspective view which shows the state which attached the attachment board by the conventional method. It is a front view of the conventional attachment plate mounting bracket.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1a, 1b Attachment plate attachment metal fitting 2a Cylindrical body 2b which has a lid at one end Cylindrical body 3 which has a lid at the other end 3 Rod-shaped bodies 4a, 4b, 7 Holes 5a, 5b Lid 6 Cylindrical without lid Shape 8 Hexahedron 10 Steel column 11 Bracket 12 Beams 13a, 13b Webs 14a, 14b, 14c Fitting plates 15a, 15b Flange

Claims (9)

  A cylindrical body (2a) having a lid (5a) at one end, a cylindrical body (2b) having a lid (5b) at the other end, and a cylindrical body (2a, 2b) having these lids ) In the hole (4a, 4b), and this rod-like body (3) has a cylindrical body hole depth having a lid whose length is shallower. An attachment plate mounting bracket that is longer than the above, one cylindrical body with the lid up, one of the base material and the attachment plate, the other cylindrical body with the lid down, The rod-like body is welded to the other of the base material and the attachment plate in a state of being disposed below one of the tubular bodies, and (4a, 4b) in the holes inside the two tubular bodies (2a, 2b). (3) is included, and the attachment structure of the attachment plate mounting bracket is characterized.   A cylindrical body (2a) having a lid (5a) at one end, a cylindrical body (2b) having a lid (5b) at the other end, and a cylindrical body (2a, 2b) having these lids ) In the hole (4a, 4b), and this rod-like body (3) has a cylindrical body hole depth having a lid whose length is shallower. 2 attachment plate mounting brackets that are longer than the above, and an attachment plate mounting bracket mounting structure in which a pair of upper and lower attachment plate mounting brackets are mounted on a base material and an attachment plate, the upper attachment plate One cylindrical body of the mounting bracket is disposed on one of the base material and the attachment plate with the lid facing up, and the other cylindrical body is disposed on the one side below the cylindrical body with the lid on the bottom. In this state, they are welded to the other of the base material and the attachment plate, respectively, and the rod-shaped body (3) is inserted into the holes inside the two cylindrical bodies (2a, 2b) (4a, 4b). One of the cylindrical members of the lower attachment plate mounting bracket is placed on the other of the base material and the attachment plate with the lid facing up, and the other tubular member has the lid on the bottom, In a state of being disposed below the rod-like body, it is welded to one of the base material and the attachment plate, and (4a, 4b) the rod-like body (3) into the holes inside the two tubular bodies (2a, 2b). An attachment plate mounting bracket mounting structure characterized by containing.   The attachment structure of the attachment plate mounting bracket according to claim 1 or 2, wherein the rod-like body (3) has an outer diameter that is 1 mm or more smaller than the diameter of the hole (4a, 4b) of the cylindrical body (2a, 2b).   The rod-like body (3) has a length that is equal to or less than the total depth of the holes (4a, 4b) of the cylindrical body (2a, 2b) having two lids and a deeper hole. The attachment structure of the attachment plate attachment fitting according to any one of claims 1 to 3, wherein the attachment structure is 20 mm or more longer than the depth of the hole of the cylindrical body.     A cylindrical body (2a) having a lid (5a) at one end, a cylindrical body (6) without a lid, a cylindrical body (2b) having a lid (5b) at the other end, and The cylindrical body (2a, 2b) having two lids and the rod-shaped body (3) that enters the cylindrical body (6) without the lid, and the length of the rod-shaped body (3) is a hole. Preparing attachment plate mounting brackets that are longer than the total depth of the depth of the hole in the cylindrical body with the shallower depth and the depth of the hole (7) in the cylindrical body without cover (6), The cylindrical body having the lid is the base material with the lid facing up, and the cylindrical body having the other lid is the one with the lid facing down and sandwiching the cylindrical body without the lid. Each of the three cylindrical bodies (2a, 2b, 6) is welded to the base material in a state of being disposed below the cylindrical body having the lid, and the cylindrical body without the lid is welded to the attachment plate. (4a, 4 Mounting structure of spliced plate mounting bracket, characterized in that said containing the rod-like body (3) to 7).   The rod-like body (3) has an outer diameter that is 1 mm or more smaller than the diameter of the holes (4a, 4b, 7) of the tubular body (2a, 2b) having the lid and the tubular body (6) without the lid. The attachment structure of the attachment plate mounting bracket of Item 5. The rod-shaped body (3) has a length equal to or less than the total depth of the cylindrical body (2a, 2b) having two lids and the holes (4a, 4b, 7) of the cylindrical body (6) without the lid. The cylindrical body having one lid with a longer hole depth and the total length of the depth of the hole (7) of the tubular body (6) without the lid is 20 mm or longer. Item 5. An attachment plate mounting bracket mounting structure according to item 5 or 6.   The attachment structure of attachment plate attachment metal fittings in any one of Claims 1-7 by which the said lid | cover (5a, 5b) is comprised with the press-fitting thing press-fit in the said cylindrical body (2a, 2b). The attachment structure of the attachment plate mounting bracket according to claim 8, wherein the press-fitted object is a hexahedron (8).

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