JP5314501B2 - Steel welded and unpainted mounting structure - Google Patents

Description

  The present invention relates to a non-welded and unpainted mounting structure for a steel body edge.

  In steel-frame buildings such as factories, warehouses, stores, etc., when a closed cross-section material such as a square pipe material is used as a steel body edge that is the foundation for mounting exterior materials etc., the steel body edge is On the outer surface, mounting hardware with holes for bolt connection is attached by welding, and then painted to prevent corrosion, then transported to the construction site, where steel frames such as columns and beams are used. It was attached to the attachment side such as the frame structure and other steel body edges by using the above-mentioned attachment hardware, and finish painting was performed on site.

JP-A-10-219883

  However, the above-described method has a problem in that after the mounting hardware is welded to the steel body edge at the factory, it is necessary to apply the anticorrosion coating as it is extended above, which requires time and effort. . There is also a problem that a welding technician is required to attach the mounting hardware to the steel barrel edge.

  In view of the above-described problems, the present invention can easily and securely attach a steel barrel edge made of a closed cross-section material to the attachment side, and can be welded to the steel barrel edge in a factory or on-site. It is another object of the present invention to provide a steel barrel mounting structure that can eliminate steps such as coating for anticorrosion.

The above-mentioned problem is that the steel body edge is a closed cross-section, made of a processed product of a highly corrosion-resistant molten Zn-Al-Mg alloy pre-plated steel sheet,
The steel body rim is provided with bolt through holes on each of the opposed face parts across the hollow part, both the opposed bolt through holes, and the bolt through holes provided in the mounting hardware on the mounting side. Bolts are passed through the bolts, and nuts screwed into the bolt ends are tightened to attach them to the mounting side. This is solved by the structure (first invention).

  In this structure, the steel body rim is made of a closed cross-section material, and the steel body rim is provided with a bolt through hole on each of the opposed face parts across the hollow part, A structure in which the bolt is passed through the bolt through hole provided in the mounting hardware on the mounting side, and the nut screwed into the tip of the bolt is tightened to be attached to the mounting side; Therefore, it is possible to easily and securely attach the steel barrel edge made of such a closed cross-section material to the attachment side. In order to obtain a more secure mounting state, a reinforcing plate or a reinforcing plate portion is sandwiched between the bolt head and the steel body edge and between the nut and the steel body edge. Also good.

  Moreover, the steel body edge is made of a molded product of a highly corrosion-resistant molten Zn-Al-Mg alloy pre-plated steel sheet, and the steel body edge is only provided with bolt holes as attachment parts. And, since it is structured to be attached to the mounting side with a bolt passed through the bolt hole, cutting performed in the process of manufacturing the steel body edge and bolts to the steel body edge Even when drilling through holes, the sacrificial corrosion action by the plating layer works strongly, and there is no such thing as causing corrosion later due to those parts, so it is painted on the steel barrel edge In addition, there is no need to perform post-plating, the process for preventing corrosion of the steel barrel edge in the factory or on-site can be eliminated, and the structure for mounting can be simplified.

  Further, in this way, it is only necessary to open a bolt hole for the steel body edge, and it is not necessary to weld the mounting hardware to the steel body edge, and it is possible to eliminate welding to the steel body edge. it can.

1st invention WHEREIN: The said attachment side is the 2nd steel barrel edge which consists of a shaping | molding processed product of the highly corrosion-resistant fusion | melting Zn-Al-Mg alloy pre-plated steel plate of a closed cross section,
The mounting hardware is preferably formed of a molded product of a highly corrosion-resistant molten Zn—Al—Mg alloy pre-plated steel sheet, and is attached with a one-side bolt from the outside of the second steel body edge (second invention). .

  In this case, the forming process of the high corrosion resistance molten Zn-Al-Mg alloy pre-plated steel sheet is applied to the second steel body edge of the closed cross section made of the processed product of the high corrosion resistance molten Zn-Al-Mg alloy pre-plated steel sheet. Since the mounting hardware made of the product is mounted with one-side bolts, it is only necessary to open a bolt hole for passing the one-side bolt through the second steel barrel edge and the mounting hardware. There is no need for painting or post-plating due to drilling, and no welding is required.

  In addition, since the mounting hardware on the mounting side and the first steel barrel edge are configured to be attached by bolt joining with a through bolt and a nut, a one-side bolt for the second steel barrel edge is used. The attachment hardware that has been used can be installed in the factory in advance. Therefore, unlike bolt joints that use bolts and nuts, one-side bolts have the property that once tightened, they cannot be loosened and retightened. The use of one-side bolts was rarely done because it was difficult to ensure high mounting accuracy, but at the factory, it was necessary to mount the steel barrel and mounting hardware. It is easy to set the relative positional relationship easily, and after setting the positional relationship accurately, it can be mounted with a one-side bolt. Can be realized. This also makes it possible to promote the popularization of one-side bolts that have been limited in use.

  In the first invention, the attachment side may be a steel frame structure part of a building, and the attachment hardware may be attached to the steel frame structure part by welding (third invention). Welding is performed on the steel frame structure part of the building and is not performed on the steel body edge, and welding on the target steel body edge can be eliminated. And the effect that the process for the anticorrosion with respect to the steel barrel edge used as an object can be eliminated is show | played.

  Since the mounting structure of the steel barrel edge according to the present invention is as described above, the steel barrel edge made of the closed cross-section material can be easily and securely attached to the mounting side, and the steel barrel It is possible to eliminate processes such as welding to the edge at the factory and site, and painting for anticorrosion.

The attachment structure of 1st Embodiment is shown, The figure (I) is a front view, The figure (B) is a partial cross section perspective view which shows the 1st steel body edge and the 2nd steel body edge in a separated state It is. Fig. (A) is a partially sectional perspective view showing the second steel barrel edge and the mounting hardware in a separated state, and Fig. (B) is a partial sectional perspective view of the mounting hardware attached to the second steel barrel edge. The figure and figure (C) are partial cross-sectional perspective views of the first steel body edge. Figures (a) and (b) are an overall perspective view and an exploded partial sectional front view of a one-side bolt, and Figures (c) to (e) are partial sectional front views showing how to use the one-side bolt. is there. FIG. 1A is a front view showing the mounting structure of the second embodiment, and FIGS. 2B and 2C are a front view and a sectional side view showing the mounting structure of the third embodiment.

  Next, embodiments of the present invention will be described with reference to the drawings.

  In the steel barrel edge mounting structure of the embodiment shown in FIG. 1 to FIG. 3, 1 is a horizontal steel pipe edge having a square cross section with a closed cross section. It is a vertical second steel barrel edge in the form of a square pipe with a closed cross section, and the first steel barrel edge 1 is in a state where its end faces the side surface of the second steel barrel edge 2 in a close proximity state. And is attached to the second steel barrel edge 2. Reference numerals 3 and 3 denote angled upper and lower mounting hardware for mounting. The first and second steel body edges 1 and 2 and the mounting hardware 3 and 3 are both highly corrosion-resistant molten Zn-Al. -It consists of a processed product of Mg alloy pre-plated steel sheet. For example, a highly corrosion-resistant molten Zn-6% Al-3% Mg alloy-plated steel sheet known as ZAM (registered trademark) is used for the highly corrosion-resistant steel sheet.

  In order to attach the first steel barrel edge 1 to the second steel barrel edge 2, as shown in FIG. A plurality of sets of bolt through holes 1a and 1b located on the same vertical axis are formed in each of the surface portions. Further, as shown in FIGS. 2 (a) and 2 (b), the side portions of the second steel barrel edge 2 are provided with plate portions 3a and 3a on the vertical sides of the upper and lower mounting hardwares 3 and 3 on the horizontal side. These plate portions 3b, 3b are attached with one-side bolts 5 from the outside of the second steel barrel edge 2 so as to face each other at a predetermined interval in the vertical direction.

  The one-side bolt 5 includes a bolt body 8 and a sleeve 9 as shown in FIGS. The bolt body 8 includes a head portion 8c at the base end portion of a shaft portion 8b whose outer peripheral portion is a male screw portion 8a, and an inner peripheral shape for rotation operation, for example, an inner peripheral hexagon, at the center position of the top surface portion of the head portion 8c. The sleeve 9 is provided with an outer flange portion 9a at the base end portion, and the outer flange portion 9a has a larger planar size than the head portion 8c of the bolt body 8, and The outer periphery has an irregular shape, for example, a hexagonal shape. The inner peripheral portion of the half portion 9b on the distal end side of the sleeve 9 is provided with a female screw portion 9c that engages with the male screw portion 8a of the bolt body 8, and the inner half portion 9d has an inner diameter. The bolt body 8 is formed larger than the outer diameter of the shaft portion 8b and smaller in thickness than the tip half portion 9b.

The one-side bolt 5 is configured by inserting the distal end portion of the bolt body 8 into the sleeve 9 through the opening on the proximal end side and screwing the male screw portion 8a of the bolt body 8 and the female screw portion 9c of the sleeve 9 together. ,
The one-side bolt 5 is inserted into the bolt through holes 10a and 11a from one side of the overlapped plate portions 10 and 11 as shown in FIGS. The flange portion 9a is brought into contact with the peripheral surface of the bolt through hole 10a of the member 10 on the one side, and the head 8c of the bolt body 8 is screwed while preventing rotation of the outer flange portion 9a with a tool. If the rotation is continued, the proximal end side half portion 9d of the sleeve 9 is plastically deformed and bulges outward in the radial direction, and the bulge portion is formed at the outlet portion of the bolt hole 11a of the plate portion 11 on the other side. 9e is formed, and both plate portions 10 and 11 are sandwiched between the bulge portion 9e and the head 8c of the bolt body 8 or the outer flange portion 9a of the sleeve 9, so that a joined state is formed. Yes.

  Then, as shown in FIG. 1 (b), a bolt through hole 3c for joining the first steel barrel edge 1 is formed in each plate portion 3b on the horizontal side of the upper and lower mounting hardware 3, 3. The first steel barrel edge 1 is disposed between the plate parts 3b, 3b on the horizontal side of the upper and lower mounting hardware 3, and both bolt through holes 1a, 1b facing each other across the hollow part The bolt 6 is passed through the bolt through holes 3c and 3c of the upper and lower mounting hardware 3 and 3, and the nut 7 screwed into the tip of the bolt 6 is tightened, so that the second steel It is attached to the trunk edge 2.

  In the above-described structure, the first steel body edge 1 is formed of a square pipe-like closed cross-section material. The first steel body edge 1 has bolt through holes in each of the opposing face portions across the hollow portion. 1a and 1b, and the bolts 6 pass through the bolt through holes 1a and 1b facing each other and the bolt through holes 3c and 3c provided in the fittings 3 and 3 on the second steel barrel edge 2 side. Since the nut 7 screwed into the bolt 6 is tightened, it is structured to be attached to the second steel body rim 2, so that the second cross section made of such a closed cross-section material is used. The 1 steel barrel edge can be securely attached to the second steel barrel edge 2 easily.

  In particular, in this embodiment, the end portion of the first steel barrel edge 1 is sandwiched from both sides by the plate portions 3b and 3b of the mounting hardware 3 and 3 and is bolted by the through bolt 6 and the nut 7. Therefore, by the reinforcing action of the plate portions 3b, 3b, deformation of the first steel body edge 1 due to fastening can be suppressed and a firm fastening state can be formed.

  In addition, the first steel body edge 1 is made of a molded product of a highly corrosion-resistant molten Zn—Al—Mg alloy pre-plated steel sheet, and the first steel body edge 1 has bolt holes as attachment parts. 1a and 1b are provided, and the second steel barrel edge 2 is structured to be attached with bolts 6 passed through the bolt through holes 1a and 1b. Even if the cutting performed in the process of manufacturing the steel barrel edge 1 or the drilling of the bolt through holes 1a and 1b with respect to the first steel barrel edge 1, the sacrificial corrosion action by the plating layer works strongly, and those parts Therefore, there is no such thing as causing corrosion later, so there is no need to paint or post-plate the first steel barrel edge 1, and the first steel barrel edge in the factory or field It can eliminate the process for anti-corrosion against 1, and in this way For the first steel barrel edge 1, it is only necessary to open the bolt through holes 1a and 1b, and it is not necessary to weld the fittings 3 and 3 to the first steel barrel edge 1. Welding to the edge 1 can be eliminated.

  In particular, in the present embodiment, the mounting side is a second steel body edge 2 having a closed cross section in the shape of a square pipe made of a molded product of a highly corrosion-resistant molten Zn—Al—Mg alloy pre-plated steel sheet, and the second steel Since the metal fittings 3 and 3 made of a molded product of a high corrosion-resistant molten Zn—Al—Mg alloy pre-plated steel plate are attached to the barrel edge 2 with the one-side bolt 5, the second steel It is only necessary to open the bolt through holes 2a and 3d for passing the one-side bolt 5 through the barrel edge 2 and the mounting hardware 3, and there is no need for painting or post-plating by opening the bolt through holes 2a and 3d. No welding is necessary.

  And since the attachment metal 3 of the 2nd steel barrel edge 2 and the 1st steel barrel edge 1 become a structure attached by the bolt joint by the penetration bolt 6 and the nut 7, it is the 2nd steel barrel edge 2 The mounting hardware 3 using the one-side bolt 5 can be pre-installed in the factory in advance, and a highly accurate mounting with respect to the relative positional relationship between the second steel barrel edge 2 and the mounting hardware 3 can be achieved. It can be realized with the side bolt 5.

  The structure of the second embodiment shown in FIG. 4 (a) has one mounting hardware 3 provided on the second steel barrel edge 2 side, and suppresses deformation of the first steel barrel edge 1 due to fastening. A structure in which a reinforcing plate 14 is arranged on the side opposite to the plate portion 3b of the mounting hardware 3 with the first steel body edge 1 interposed therebetween so that a firm fastening state can be formed. The rest is the same as the structure of the first embodiment.

  In the structure of the third embodiment shown in the fourth (b) (c), the mounting side is composed of an H-shaped steel column 15 as a steel frame structure part of a building, and the mounting hardware 16 is composed of an angle-shaped hardware. The plate portion 16a on the vertical side is attached to the flange portion of the H-shaped steel column 15 by welding w. The mounting hardware 16 and the H-shaped steel column 15 are made of a coating for anticorrosion after welding w. The steel body edge 1 is formed of a molded product of a highly corrosion-resistant molten Zn—Al—Mg alloy pre-plated steel sheet having a closed cross section in the shape of a square pipe, oriented in the horizontal direction, and hollow in the middle portion in the longitudinal direction. Bolt through holes 1a and 1b are provided on the upper and lower surface portions opposed to each other with the portion interposed therebetween, and the steel barrel edge 1 includes both the opposed bolt through holes 1a and 1b and an H-shaped steel column 15. The bolt 6 is passed through the through hole 16c of the plate part 16b on the horizontal side of the mounting hardware 16 welded to the side, and the nut 7 screwed into the tip of the bolt 6 is tightened. , Attached to an H-shaped steel column 15. Reference numeral 17 denotes a reinforcing plate.

1 ... 1st steel body edge (steel body edge)
1a, 1b ... bolt through hole 2 ... second steel body edge (attachment side)
3 ... Mounting hardware 3c ... Bolt through hole 5 ... One side bolt 6 ... Bolt 7 ... Nut 15 ... H-shaped steel pillar (steel frame structure, mounting side)
16 ... Mounting hardware 16c ... Bolt hole w ... Welding

Claims (3)

The steel body edge is made of a molded processed product of a highly corrosion-resistant molten Zn-Al-Mg alloy pre-plated steel sheet with a closed cross-section,
The steel body rim is provided with bolt through holes on each of the opposed face parts across the hollow part, both the opposed bolt through holes, and the bolt through holes provided in the mounting hardware on the mounting side. Bolts are passed through the bolts, and nuts screwed into the bolt ends are tightened to attach them to the mounting side. Construction. The mounting side is a second steel body edge made of a molded product of a highly corrosion-resistant molten Zn-Al-Mg alloy pre-plated steel sheet having a closed cross-section,
2. The steel according to claim 1, wherein the mounting hardware is made of a molded product of a highly corrosion-resistant molten Zn—Al—Mg alloy pre-plated steel plate, and is attached with a one-side bolt from the outside of the second steel body edge. Non-welded and unpainted mounting structure for body edges.   2. The non-welded / unpainted mounting structure for a steel body edge according to claim 1, wherein the attachment side is a steel frame structure part of a building, and the attachment hardware is attached to the steel frame structure part by welding.

Images