JPH11210094A - Structural material and connecting method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structural material suitable for connection at a place where a welding means can not be used because of being in danger of ignition, explosion or the like and at a place where the rear side is difficult to use since the rigidity of the structural material is relatively low, in particular, and since a spot of joining is narrow, and a connecting method using the structural material. SOLUTION: Screw holes piercing a structural material are provided in the structural material and one or a plurality of bolts 2 having a structure allowing to operate from the surface and being longer enough than the thickness of the structural material are screwed in the screw holes from the rear side. The bolts 2 being drawn out by the operation from the surface, a reinforcing plate 5 having bolt pass holes provided at places corresponding to embedded bolts 2 of the footing or bolts and screw holes of another structural material is put on and the bolts 2 are passed through and fastened with nuts 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structural material having a connection bolt inside which can be operated from the surface, particularly a relatively low-rigidity structural material such as an aluminum material, or an end or back side of a channel or the like. The present invention relates to a structural material suitable for connection of a difficult structural material such as a bolt from a bolt.

[0002]

2. Description of the Related Art Conventionally, as a connection method of a structural material for forming a steel structure for building such as a house or a building, a bridge, and a structural material for forming a steel structure for other construction, etc.
Usually, it was performed by welding or rivets. There are few problems when connection by welding or rivets is possible, but there are problems with the location of the connection (narrow, the back side can not be used, etc.), or when the structural material is a thin part or structural material When there is a problem such as a relatively low rigidity, a method of connecting structural members by bolting using a reinforcing plate is widely performed. Especially in warehouses and manufacturing plants that store flammable and ignitable substances such as fuels and solvents, there is a danger of ignition, ignition and explosion when performing welding, etc. Very few connections of structural material are made. Further, in the case of a structural material made of an aluminum alloy, even when there is no danger of fire, welding by TIG or MIG is required when welding, and the welding itself is an operation requiring skill.

[0003] When welding is not possible, the back side of the fixed part is used when the back side of the structural material to be connected is narrow and it is difficult to fit bolts or the like, or when the structural material is not fixed to a manhole cover such as a tank. If the bolts cannot be used freely, embedded bolts such as foundation bolts are used.However, when the structural material itself is relatively thin or has low rigidity, it is difficult to use embedded bolts. Have difficulty.

[0004]

DISCLOSURE OF THE INVENTION The present invention relates to a structural material suitable for connection of a structural material at a place where there is a danger of ignition, explosion, or the like and where welding means cannot be used, in particular, the rigidity of the structural material is relatively low, It is an object of the present invention to develop a structural material suitable for connecting a place where the back side is difficult to use because the place is narrow and a connection method using the structural material.

[0005]

According to the present invention, there is provided (1) a structure material comprising a screw hole penetrating the structure material, and the screw hole being operable from a surface thereof. (2) The bolt has a plus, minus, square or hexagonal hole at the tip of the bolt shaft to enable screwing operation from the tip of the bolt. The structural material according to the above (1), which is a bolt; (3) the structural material according to the above (1) or (2), wherein the structural material is a hollow material; and (4) the structural material, such as a building or a bridge. The structural material according to any one of (1) to (3), which is used for (1) to (3), wherein the material is a 5000-series aluminum alloy as a material. Structural materials,

(6) A screw hole penetrating the structural material is provided,
One or a plurality of bolts having a length sufficiently longer than the thickness of the structural material, which are operable from the front surface, are screwed into the screw holes from the back surface, and the bolts are pulled out by operating from the front surface of the rectangular pipe-shaped structural material. A method of connecting a structural material, wherein a reinforcing plate having a bolt passage hole provided at a position corresponding to the bolt and the screw hole of the embedded bolt or other structural material is passed through the bolt, and the bolt is fastened with a nut. as well as. (7) The above object has been achieved by developing the method for connecting structural materials according to (5), wherein the structural material in the form of a square pipe is a 5000-series aluminum alloy.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The structural material used in the present invention is not particularly limited as long as it can be used as a structural material. Therefore, it can be effectively used even with the most widely used steel materials. Also, the shape of the structural material may be any of a plate material, an L-shaped material, a U-shaped material, a U-shaped material, an E-shaped material, and the like, as long as connection using bolts is required, and there is no particular limitation. . The aluminum channel (U-shaped material), whose use has been increasing recently, has been replaced with FSW (friction stir welding), M
IG (metal inert gas arc), T
IG (tungsten inert gas ar
Since the effect can be particularly exhibited when used for an aluminum structural material joined in a square pipe shape by c) or the like, an aluminum structural material will be mainly described below as an example. However, it is not limited to a square pipe-shaped structural material. As is well known, aluminum is a soft and lightweight metal. However, an alloy mainly containing magnesium is significantly improved in strength as compared with a pure aluminum material, and has been used as a structural material. Particularly, the 5000-series aluminum alloy has a strength not so inferior to steel. However, the toughness is inferior to that of steel materials, and screws and the like are liable to lack thread and have a problem in strength. FIG.
When a channel 1 made of an aluminum alloy (for example, A5083S or A5083P) as shown in FIG. 3 is combined as shown in FIG. Is the other structural material 8 as shown in FIG.
It is extremely difficult to connect using Such aluminum alloy structural materials are lightweight, have relatively high strength, and have sufficient corrosion resistance due to surface treatment. Therefore, not only houses and buildings, but also bridges, ships, and outdoor structures It can be used effectively.

In such a case, as shown in FIGS. 1 and 2, a predetermined number of screw holes are provided at predetermined positions of the channels 11 and 12, and a plurality of bolts which can be operated from the front surface are screwed into the holes from the rear surface. After that, as shown in FIG. 3, another channel 12 processed in the same manner was superimposed,
Both are joined by means such as FSW, TIG or MIG.

The bolts 2 used in this case are operable means 2 provided from the surface of the structural material 8 to the tip of the shaft.
3. For example, as shown in FIG. 2, a plus, minus, square or hexagonal recess (hole) is provided at the tip of the bolt shaft portion 22,
A screwdriver or a square or hexagonal wrench may be inserted into this, and the bolt 2 may be screwed in from the surface of the structural material 8 so that the bolt shaft 22 can be pulled out to the surface of the structural material 22. Accordingly, the tip of the shaft portion may be a convex portion instead of a dent (hole) as an operable from the surface, but problems such as the size and strength of a tool that fits into and operates the dent or convex portion. A hollow (hole) is more preferable. The head 21 of the bolt incorporated in this structural material is easier to operate when the nut is fitted or when the rotation of the bolt is suppressed. The length of the shaft 22 of the bolt needs to be the sum of the thickness of the channel, the reinforcing plate, and the nut plus at least the extra length for operation.

A screw hole 3 for a bolt is drilled in a predetermined portion of the channel 1, and the bolt 2 is inserted into the screw hole 3 from the back side of the channel 11 so that the tip of the shaft portion does not come out of the screw hole surface.
Screw as deeply as possible. If necessary, the channel 12 to be joined to the channel 11 is treated in the same manner and the bolt 2 is screwed in, the two are overlapped as shown in FIG. 3, and the joint 4 is welded by a method such as TIG or MIG. Structural material. Pull out the built-in bolts of such a structural material, combine them in a predetermined position, fit a pre-drilled reinforcing plate into the plurality of bolts that have been pulled out, and insert nuts into each bolt and tighten them. Materials can be assembled.

[0011]

According to the present invention, the structural material is provided with a screw hole penetrating the structural material, and a bolt capable of being operated from the front end side of the bolt shaft portion is screwed from the back side of the structural material. It can be effectively used in cases where it is impossible to perform welding, where the material of the structural material is relatively weak and it is difficult to fasten it with screws, or where the back side is narrow or closed and it is desired to operate from the surface. In the above description, the square pipe-shaped structural material has been described as a representative, but it will be obvious to those skilled in the art that the present invention can be widely used not only for the square pipe but also for connecting various structural materials.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a U-shaped channel into which a bolt operable at a shaft end is screwed.

FIG. 2 is an enlarged sectional view of a part of FIG.

FIG. 3 is a cross-sectional view of a square pipe having a built-in bolt that can be operated at the tip of a shaft.

FIG. 4 is a sectional view of a joint portion of the bolt-containing structural member of the present invention.

FIG. 5 is an external view when structural materials of the present invention are joined together.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Channel 2 Bolt 21 Bolt head 22 Bolt shaft part 23 Bolt operating recess 3 Screw hole 4 Channel joint 5 Reinforcement plate 6 Nut 7 Bolt operating tool 8 Square pipe-shaped structural material 11, 12 channel

Claims (7)

[Claims] 1. A structural material is provided with a screw hole penetrating the structural material, and one or a plurality of bolts having a length sufficiently longer than the thickness of the structural material, which can be operated from the front surface, are provided on the screw hole from the back surface. Screwed structural material. 2. The structural material according to claim 1, wherein the bolt is provided with a plus, minus, square or hexagonal hole at a tip end of the bolt shaft portion, and can be screwed in from the tip end side of the bolt. 3. The structural material according to claim 1, wherein the structural material is a hollow material.
The described structural material. 4. The structural material according to claim 1, wherein the structural material is used for building or constructing a building, a bridge, or the like. 5. The structural material according to claim 1, wherein the material is made of a 5000-series aluminum alloy. 6. A square pipe-shaped screw hole provided with a screw hole penetrating the structural material, and one or a plurality of bolts having a length sufficiently longer than the thickness of the structural material screwed into the screw hole from the front surface. The bolt is pulled out by operating from the surface of the structural material, and a reinforcing plate provided with a bolt passage hole at a place corresponding to the embedded bolt of the foundation or a bolt of another structural material and the screw hole is passed through the bolt, and the bolt is passed through. A method for connecting a structural material, wherein the method is connected with a nut. 7. The method for connecting structural materials according to claim 6, wherein the structural material in the form of a square pipe is a 5000-series aluminum alloy.