JPH1023632A - Connection structure of high corrosion-resistant electric route-supporting member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the production and progress of corrosion from a connection part, almost completely by a method wherein two or more various types of electric route members which are composed of substrates and coverings, applied to the surfaces of the substrates and which have average alloy layer densities within a specific range and thicknesses within a specific range are connected to each other by corrosion-resistant tightening/fixing means. SOLUTION: An alloy covering which has an average alloy density of 3.5-3.7kg/m<2> and an average alloy layer thickness, not less than 25μm is applied to the surface of a steel substrate. In the case of electric route supporting frames, a straight joint metal fitting 1 has a cross-section which is similar to the cross-section of a master frame A1 or A2 and its wall surface 1wu continuous from its upper edge 1wf is an approximately vertical plane, and its wall surface 1wm continuous from its lower edge is inclined toward its rear side. Further, at least four horizontally long rectangular holes 1h are formed in the middle stage region of its middle stage wall surface, continuous from its lower side and its wall surface 1ws , continuous from its lower side is inclined toward the front side. Further, its lower stage wall surface 1wd , continuous from its lower side, is approximately in parallel with the middle stage wall surface 1wm and its lower edge 1df protrudes approximately vertically to the wall surface 1wm toward the rear side. The straight joint metal fitting 1 is tightened and fixed by corrosion-resistant steel square base vises which are connection screws CS and nuts CN. As a result, the corrosion produced in the connection part can be almost completely eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a material for supporting an electric circuit having high corrosion resistance, which is constituted by connecting two or more electric circuit materials. In addition to the fact that the electric circuit material itself is coated with a highly corrosion-resistant alloy, The present invention relates to a circuit path supporting material constituted by corrosion-resistant steel fixing means, for example, fixing means using at least one of a screw and a rivet so that a high corrosion-resistant coating of a portion is preserved. Here, the “electric circuit” is a power cable (electric cable) used for at least one of power transmission and distribution (may be abbreviated as “transmission and distribution” or “power transmission and distribution”),
In addition to electric wires used for transmission and distribution of relatively small electric power, the medium is composed of a carrier line of an electric signal or an optical signal, and the electric circuit supporting material is a material constituting a building supporting the electric circuit. The electric circuit material is a material for preparing the electric circuit supporting material, and is a concept including a girder material, a bar material, a shape material, a bolt nut, a screw nut, a rivet, and the like.

[0002] In the present invention, the term "connection" includes not only a normal connection but also an extended range in which other accessories and the like are provided.

[0003]

2. Description of the Related Art A widely used connection method is welding, fitting, screw fixing (fixing) or rivet fixing (rivet fixing). However, welding, which is recognized as the strongest connection method, uses a flame or electric spark to melt the welding rod at the welded part and casts the molten metal. Is inevitably lost in the weld. Further, screw fixing or rivet fixing does not cause loss of the high corrosion resistant coating. However, if a normal screw or rivet is used, it may cause rust and damage to the connection portion such as reduction in strength to breakage.

The present inventor has already proposed a "fitting and fixing method" and a unit girder material suitable for an electric circuit supporting material assembled by the "fitting and fixing method" as a measure for solving the above-mentioned problem. This fitting method can connect and fix two or more girders while preserving the high corrosion-resistant coating, but is adopted in work positions where it is difficult to bring the anvil and strong punches, for example, in places with poor scaffolding or in narrow places. Had left difficulties.

[0005] However, even when two or more girders are connected and fixed by the above-mentioned fitting and fixing method to produce a unit girder suitable for an electrical circuit supporting material, the unit girders or child girders are applied. How to select the layer density and layer thickness of the corrosion-resistant coating remains to be improved. Of course, it can be expected that a corrosion resistant coating having a high layer density and a large layer thickness can withstand any environment. However, this results in excessive consumption of resources and shortage of resources, resulting in an increase in the cost burden for coating. As a result, the corrosion-resistant coating may not easily spread to necessary places.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to realize efficient use of metal resources constituting a corrosion resistant coating, to minimize the cost burden required for the coating, and to inherit the conventional connection fixing method. An object of the present invention is to provide a connection structure which can substantially eliminate the possibility of corrosion occurring or progressing from the connection portion, and can be implemented without any particular difficulty even at a construction site.

[0007]

Means for Solving the Problems The present inventor has completed the following invention as means for solving the above problems. That is, the present invention is constituted by a combination of the following requirements: a highly corrosion-resistant alloy coating comprising aluminum, zinc and silicon on the surface of a steel base material, wherein the coating has an average alloy layer density of 3.5. ~ 3.7 kg / m ² and average alloy layer thickness 2
At least 5 μm or more of various electrical circuit materials applied to the surface of the base material are interconnected by one or more fastening means selected from corrosion-resistant steel screws and corrosion-resistant steel rivets while preserving their high corrosion resistance. The connection structure of the material for supporting the electric circuit constituted by the above.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION A high corrosion-resistant alloy coating in a circuit-path supporting material of the present invention has an aluminum content of about 55% by weight,
A high corrosion resistant alloy having a zinc content of about 43.4% by weight and a silicon content of about 1.6% by weight has a mean alloy density of 3.5 to 3.7 kg / m ² , and preferably of about 3.5, on the surface of the base steel material. 62kg / m ²
And an average alloy layer thickness of 25 μm or more, preferably about 27 to 40 μm on average. In most of the layers, a pattern due to uneven distribution of constituent metals is observed in the cross section. Such a steel plate (steel material) with a high corrosion-resistant coating is commercially available, for example, under the trade name “Galvalume steel plate (steel material)”. The upper limit of this high corrosion resistant alloy layer thickness is not critical and is only a practical limit.

Among the above high corrosion resistant alloys, the most substantial ones are substantially 55 ± 0.5% by weight of aluminum, about 43.4 ± 0.5% by weight of zinc, and about 1.6% of silicon.
It is a high corrosion resistant alloy consisting of ± 0.3% by weight.

The main object of the present invention is a connection structure in which two or more electric circuit materials made of a high corrosion-resistant steel sheet sufficiently protected by the above-mentioned high corrosion-resistant alloy layer are firmly connected without impairing the coating performance. . That is, the present invention does not merely exist in electric circuit materials using a high corrosion-resistant alloy-coated steel sheet, but preserves the high corrosion-resistant coating and, if necessary, further coats the surface of the coating with a highly durable coating called a “clear coat”. The connection structure itself has a higher corrosion resistance with a finish.

[0011] The connection structure of the present invention for a circuit support material is a combination of a screw and a nut and a driving rivet or a pop rivet (a screw or a bolt) used for connecting and fastening two or more circuit materials. The material of the "fastening fixture" in the present invention) is a material conforming to SUS304 specified for corrosion-resistant steel, particularly for stainless steel in Japanese Industrial Standard (JIS 3141).

A bend rack (including outside and inside), a straight connector, a vertically movable rack connector, a horizontally movable rack connector, a separator, and a Z-shaped cross-section, which are one of the connectors belonging to the electric circuit supporting material of the present invention. Fixing brackets, elastic fixing brackets (Tighten the fixing object with bolts penetrating the plate with claws and "high nut" which is a plate-shaped spring nut), Angle fixing brackets (J-section plate with cross section and J-bolt penetrating it And the hanging bracket (the fixing object is sandwiched between the lower side and the side by the J-section plate and the U-shaped section, and tightened by the suspension bolts that penetrate both plates). As far as possible, a high corrosion resistant alloy coating as specified in the claims is applied.

<Clear coat finish of electrical circuit supporting material>
Preferably, a "hard clear coating film" is further applied to the surface of the girder member belonging to the electric circuit supporting material of the present invention and the electric circuit material constituting the same, that is, the surface of the highly corrosion-resistant coating such as the fixing tool and the connecting tool. The role of the hard clear coating is to prevent or effectively prevent the corrosive effects of the environment from reaching the surface of the substrate without changing the color or tint of the substrate. Nevertheless, the technique of forming a hard clear coating film is not limited to the optimum “baking method”, but also employs an electrodeposition coating method, especially a cationic electrodeposition coating method having excellent adhesion and durability. In addition, as a coating film curing method used in the above-mentioned “baking method”, an infrared beam method, an ion beam method, an electron beam method, and the like can be given.

The above clear coating film has an average thickness of 20 to 40 μm, preferably 25 to 35 μm, and the transparency of the coating film is 88 to 92%, preferably 90 to 91%, in terms of gloss of visible light. % And impact resistance (Dupont;
15 ℃) 1/2 x 500g x 30cm height at height (cm)
m, and preferably 35 ± 1 (cm) is important in the present invention.

The durability of the clear coating film according to the present invention is determined by the extent to which the protective function can be maintained by the penetration of iron powder into the coating film and, in some cases, the wear of the coating film by sand particles. The point has its significance. Nevertheless, its sustainability assessment is practically nothing but an accelerated assessment method in some sense.

For example, in order to determine the minimum film thickness required to prevent the iron powder from penetrating the coating film and to reach the high corrosion-resistant alloy coating thereunder, coating film samples of various film thicknesses are prepared and the surface is coated. Iron powder is sprayed by a weak shot blast, and then a base steel plate is grounded, and a high voltage is applied with a Tesla coil from the pierced iron powder side to observe the presence or absence of conduction. If conduction is observed, it is difficult to expect the coating to have a protective function at that thickness.

According to the conductivity evaluation method described above, the lower limit of the thickness of the coating film is usually 28 to 35 μm, preferably 30 ± 1 μm. On the other hand, in order to measure the abrasion of the coating film due to sand particles, the time required for the coating film to be worn down to a film thickness which is considered to be no longer able to exert its protective function by a weak sandblasting treatment is measured. In this measurement, the emphasis should be placed on sharp and prominent portions, and then on portions where the coating is susceptible to wear, such as bent portions.

The lower limit of the thickness of the coating film obtained by this observation is generally lower (thinner) than the lower limit of the thickness against piercing by iron powder. In other words, it is expected that a considerably thin coating film can still perform a certain protection function.

After all, if the lower limit of the film thickness determined to be necessary to protect the high corrosion resistant alloy coating against the iron powder stab is adopted as the lower limit of the thickness of the clear coating film in the present invention, in most cases, the coating is performed. It can be concluded that there is no risk of deficiency in the protective function of the membrane.

<Explanation Based on the Drawings> The "material for supporting electric circuit with high corrosion resistance coating" of the present invention is embodied in various forms.
These will be specifically described below with reference to the drawings.

The girder material included in FIG. 1 is an example of an electrical path supporting girder material for horizontal support or vertical support, and FIG. 1 (A) is a rear elevational view of a straight connection fitting (1). , Its cross-sectional shape is a specific corrugated plate shape as apparent from the following figures,
The cross-sectional shape is the main girder (A1) or main girder (A2) to which it should be connected.
Is similar to the cross-sectional shape of. Upper edge of straight connection fitting (1) (1u
f) and the lower edge (1df) are both bent substantially perpendicularly to the back side and serve to sandwich the upper and lower edges of the parent girder (A1) and the parent girder (A2) to be connected. In FIG. 1 (A), a straight connection fitting
(1) The wall (1wu) following the upper edge (1uf) is a plane substantially perpendicular to the upper edge (1uf), and the wall (1wm) following the lower side is inclined toward the back side, and further below the lower side. The middle wall surface following the upper edge (1uf) is a plane substantially perpendicular to the upper edge (1uf), and generally four or more oblong holes (1h) are drilled in the substantially middle region, and the wall surface (1ws) following the lower side is The lower wall surface (1wd) that slopes toward the front (front) side and follows the lower side is approximately parallel to the middle wall surface (1wm) and the lower edge approximately perpendicular to it.
(1df) overhangs to the back. The above oblong hole (1
h) is an insertion hole when a square root screw or a square root bolt is used as the connection screw (CS) .The significance of the insertion hole (1h) being formed in a horizontally long shape is that it is positioned in the longitudinal direction before tightening. Is to be able to fine-tune. Further, the insertion hole (1h)
It is important that the short side length is slightly shorter than or the same as possible from the side length of the above-mentioned square root.

FIG. 1B shows a former stage for forming the above-mentioned connection structure. The parent girder (A1) located on the left side (“front, rear, left, right, upper, lower middle, etc.” are expressions for convenience of explanation), and the right side. The straight connection fitting (1) is located in front of the parent girder (A2) located at. FIG. 1C shows a state in which these members are fitted at predetermined positions.

FIG. 1C shows a connection screw (CS) which is connected if it is tightened and fixed with a square root screw or square root bolt made of corrosion-resistant steel (SUS304) and a nut (CN) made of corrosion-resistant steel (SUS304) as a connection screw (CS). This shows a state where the structure is completed.

The girder material included in FIG. 2 is a girder material for supporting an electric path that bends upward or downward from a horizontal plane, and is an electric path supporting girder material included in the "bend rack (2)" and its end.
(2e) is a connecting metal fitting (21) with a vertically long hole (2h) for connecting and fixing to a main girder of another girder material (rack).

A rack that bends upward from horizontal as shown in FIG. 2A is called an "inside bend rack" (2i), and bends downward from horizontal as shown in FIG. 2B. The electrical circuit supporting rack is referred to as "outside bend rack" (2o).

The inside bend rack (2i) shown in FIG. 2A has a bent main girder (2f) opposed to both sides and a child girder therebetween.
(2b) are connected, and connection screw insertion holes (2h) for connection and fixing are usually provided in a unit of two in the front end region of the parent girder (2f).

On the other hand, a connection fitting (21) having a vertically elongated hole (2h) for connecting the parent girder (2f) to another parent girder has a U-shaped cross section, as the name suggests. The connection screw insertion hole (2h) provided on the wall surface is formed in a vertically long shape, that is, a long hole extending substantially parallel to the short side of the connection fitting (21). The significance lies in the fact that the position fine adjustment when connecting and fixing the inside bend rack (2i) to another parent girder is often performed in the vertical direction.

Further, an optimum connection screw (CS) and a nut for tightening and fixing the inside bend rack (2i) to another parent girder.
(CN) and the material of the pop rivet (CR) are both made of corrosion-resistant steel (SUS304).
Is the same as the connection by

The outside bend rack (2o) shown in FIG. 2B has the same structure as that of the inside bend rack (2i). In addition, when the outside bend rack (2o) is connected and fixed to another parent girder, a connection fitting (21) with a vertically long hole (2h) is used, which is the same as that in the inside bend rack (2i). . Suitable connection screw (CS) and nut (CN) or pop rivet (C
The material of R) may be the same as that in FIG.

The girder material included in FIG. 3 is a girder material attached to a connection point between orthogonal girder members in a cable rack supporting an intersection (branch) of two or more electric paths, and is shown in FIG. Is an L-shaped connection girder, and the example shown in FIG. 3B is a connection structure between the orthogonal girder girder in forming the L-shaped structure.

That is, in FIGS. 3A and 3B, the first sub-digit (3B1) rising from the main column (3A) is connected to the second sub-digit (3B2) orthogonal to the main sub-column (3A). In order to fix it, place the three-claw connection bracket (3C) at the place where both child girders abut each other in a T-shape,
From the front side, the connection screw (CS) is inserted into the connection screw holes (3h) formed in the three-jaw connection fittings (3C) and the sub-spars (3B1) and the sub-spars (3B2). The high nut (HN), which is an elastic nut, is abutted from the back side and tightened and fixed.

In this case, the shape of the three-jaw connection fitting (3C) can be various, for example, triangular, strip-shaped, T-shaped, or the like. It is useful to provide a locking claw that rises toward the child girder side at the tail edge where the girder (3B1) can be pulled in, since the load applied to the connection screw (CS) can be reduced. Here, the locking claw located at both shoulder edges (3sf) of the three-claw connection fitting (3C) is referred to as (3CC), and the locking claw located at the tail edge is referred to as (3CT).

The high nut (3HN) is a relatively long and thin metal plate with high elasticity. Both ends of the high nut (3HN) are warped to the same side, a central region is formed with a gap, and a screw hole is formed substantially at the center thereof. Has been established. It is important that the length of the high nut (3HN) is less than or equal to the inner dimension (dimension between inner walls) of the channel material in which it is fitted, and is usually slightly shorter. That is, unlike a normal nut, the high nut utilizes the restraining action of the inner wall of the channel material to stop self-rotation at the time of tightening. If the gap with the inner wall is too large, the restraining action does not work.

The structure encompassed in FIG. 4 is such that when two or more electric lines intersect (branch), the cable rack supporting the T-shaped intersection in the electric line formed at the intersection and the area sandwiching the intersections. FIG.
The T-shaped connecting girder shown in (A) is a second child girder (4B1) orthogonal to the first child girder (4B2) rising from the linear parent girder (4A)
Is a connection structure at the above-mentioned orthogonal point connecting the left curve parent girder (4A2) and the right curve parent girder (4A3). In the T-shaped crossing shown in FIG. 4, one connection structure of the same kind exists on both sides of the sub-spar (4B2).

The example shown in FIG. 4 (B) is a structure for connecting the orthogonal girder members which are members constituting the T-shaped structure. That is, in FIGS. 4A and 4B, the second sub-digit (4B1) orthogonal to the first sub-digit (4B2) rising from the linear parent column (4A).
In order to fix the connection, the two-girder girder is placed in a place where the two girder abut each other in a T-shape, and from the front side, the three-claw girder (4C) and the girder ( 4B1) and the child girder (4B2), while inserting the connection screw (CS) into the connection screw hole (4h) drilled, and contacting the high nut (HN) which is an elastic nut from the back side of each child girder. Tighten and fix.

In this case, the shape of the three-jaw connection fitting (4C) may be various, for example, triangular, strip-shaped or T-shaped. It is useful to provide a locking claw that rises toward the sub-girder side at the tail edge where the spar (4B1) can be pulled in, since the load applied to the connection screw can be reduced. Here, the locking claw located on both shoulders of the three-claw connection fitting (4C) is referred to as (4CC), and the locking claw located on the tail edge is referred to as (4CT).

The example shown in the girder material encompassed in FIG. 5 is an example in which a cable rack supporting two or four electric lines crossing in an X-shape when the two or four electric lines intersect each other and the electric lines in the area sandwiching the intersection. It is a girder material to be mounted when the electric circuit supporting girder is orthogonal to each other in an X-shape, and the above-mentioned main girder (5A) and sub girder (5B) are sufficient.

The X-shaped connecting girder shown in FIG. 5A is substantially the same as the first child girder (5B1) connecting the upper left curved parent girder (5A1) and the upper right curved parent girder (5A2). The second child girder (5B2) rising vertically is the third child girder (5B3) that connects the lower left curve parent girder (5A3) and the lower right curve parent girder (5A4). This is a connection structure at a point where the abutment (orthogonal) abuts on a T-shape and the orthogonal point. FIG.
In the T-shaped contact shown in the figure, the same kind of connection structure
There are two T-shaped abutments (at both ends of the child girder) on both sides of (5B2) and on the right side of (5B2).

The example shown in FIG. 5 (B) is a connection structure between the quadrature girders mounted at a point where two or three electric paths intersect in a T-shape. That is, in FIG.
In order to fix the first sub-digit (5B2) rising from (5B1) and the second sub-digit (5B3) orthogonal to each other, both sub-digits must be T
The three-jaw connection fitting (5C) is placed at the point where it comes into contact with the character shape, and the connection screws respectively drilled from the front side of the three-jaw connection fitting (5C) and the child girder (5B1) and the child girder (5B2). Connection screw (C
S) is inserted, and a high nut (5HN), which is an elastic nut, is brought into contact with the back side of each child girder and tightened and fixed.

In this case, the shape of the three-claw connection fitting (5C) can be various, for example, a triangle, a strip, a T-shape, or the like. It is useful to provide a locking claw that rises toward the sub-girder side at the tail edge to which the spar (5B1) can be pulled in, since the load on the connection screw can be reduced. Here, the locking claw located at both shoulders of the three-claw connection fitting (5C) is referred to as (5CC), and the locking claw located at the tail end is referred to as (5CT).

The high nut in the connection structure of FIG.
(5HN) may have the same meaning as in FIG. 3 or FIG. The connection structure included in FIG. 6 is a vertically movable connection fitting.
This is a connection structure in which both parent girders (6A) are connected by (6) and can be turned up and down. The example shown in FIG. 6 (A) is the vertically movable connection fitting (6) itself, and this connection fitting (6) has two opposite edges of a substantially flat main body (6s) in the same direction. It is bent almost perpendicularly to the main body (6s) and the flange (6f)
And its cross-sectional shape is relatively similar to the Greek letter “Σ” or katakana “U”.

Both flange portions corresponding to the upper and lower jaws of the vertically movable connection fitting (6) [general symbol (6f); upper edge flange (6uf)
And lower edge flange (6df)] between the left parent girder (6A1) and the right parent girder (6
A2) is clamped. The substantially flat shape of the main body (6s) is actually a groove running in the longitudinal direction in the middle part thereof as indicated by ">" in the above [1] [general symbol (6c); upper groove (6uc) and lower groove (6dc) ]
Are formed so as to be easily fitted to the cross-sectional shape of the parent girder.
In addition, two oblong holes (6h) are formed substantially in the middle of the main body (6c) and on a line located substantially at the center of the two grooves (6C).

Overhangs are formed to form joints (6j) at the corresponding positions of the two main parts (left main part (6s1) and right main part (6s2)) constituting the vertically movable connection fitting (6). (6b) is provided, and the center pin (CP) common to both overhangs is pierced substantially perpendicularly to the main body surface so as to be rotatable in the vertical direction.

FIG. 6 (B) shows a stage before both parent girders are connected by the vertically movable connection fitting (6). The left body part (6s1) of the connection fitting (6) is fitted, and the right body part (6s2) of the up / down free connection fitting (6) is fitted on the front side of the right parent girder (6A2). The square root bolt (CS) inserted into the horizontally long square hole (6h) of the section (6s) is inserted through the square hole provided at the
(CN).

FIG. 6C shows both parent digits (6
A) is the shape of each member in the area centered on the connection portion of the electric path supporting girder connected by the vertically movable connection fitting (6), the shape of the fastening connection tool, and the like.

The connecting structure encompassed in FIG. 7 is an electric-path supporting girder connected rotatably in the horizontal direction in which both master girders (7A) are connected by a horizontally adjustable connecting metal fitting (7) and a connecting structure thereof. is there. The example shown in FIG. 7 (A) is a horizontal fitting (7).
This connection fitting (7) is a substantially flat main body (7
s), the upper and lower edges facing each other are in the same direction, and the body (7
s) is bent substantially perpendicularly to the flange [general reference
(7f); upper edge flange (7uf) and lower edge flange (7df)], and their cross-sectional shapes are relatively similar to the Greek letter “Σ” or katakana “U”.

The left parent girder (6A1) is located between the two flanges [general code (7f); upper edge flange (7uf) and lower edge flange (7df)] corresponding to the upper and lower jaws of the horizontally adjustable fitting (7). And right parent digit (6A2)
Is pinched. The substantially flat shape of the main body (7s) is actually a groove running in the longitudinal direction in the middle section as indicated by ">" in the above [1] [general symbol (7f); upper edge flange (7uf) and lower edge flange
(7df)] so as to fit easily into the cross-sectional shape of the parent girder. In addition, an extremely long rectangular window (7g) is formed in a line located substantially at the center of the two grooves [the upper groove (7uc) and the lower groove (7dc)] at substantially the middle of the main body (7s). ing. Also,
In order to form joints ("hinges") (7j) at the corresponding positions of the two main parts (the left main part (7s1) and the right main part (7s2)) of the horizontally adjustable fitting (7) An overhang (7b) is provided, and the center pin (CP) is pierced in a through hole common to both overhangs in a direction substantially parallel to the main body, so as to be rotatable in the horizontal direction.

FIG. 7B shows a left parent girder (7A1) and a right parent girder (7A2) before being connected, and a freely adjustable connecting bracket (7).
And the shape of the connection tool such as the tightening connection screw, etc., and the left main body part (7s1) of the vertical connection fitting (7) on the front side of the left parent girder (7A1).
Is mounted on the right side of the right parent girder (7A2).
The right main body (7s2) of (7) is fitted.

FIG. 7 (C) shows the main part of the girder (7A) constituting the girder for supporting the electric circuit centered on the girder for supporting the electric circuit and the connecting portion which are connected by this horizontally adjustable fitting. It is the structure, the shape of each member of the connecting portion, and the shape of the fastening connector. That is, the tightening bolt (CB) is inserted through the square hole (7h) of both the main girders (7A) and the horizontally long rectangular window (7g) of the vertically movable connection fitting (7), and tightened and fixed with the nut (CN). I have.

The girder material included in FIG. 8 is a separator (8)
The separator itself (8) is a sub-girder that constitutes the girder for supporting the electrical circuit.
(8B) A fixing member (8Cs) to be fixed to (8B) and an electric circuit supporting girder member in which two or more electric circuits on the electric circuit supporting girder are vertically divided. The separator shown in FIG. 8A is a separator (8).
At least a portion of any of the longitudinal edges (8e) of the main body (8s), which is a long flat plate having substantially the same length as the parent girder, is bent substantially perpendicularly to the main body (8s). Flange (8
This is an L-shaped member or a T-shaped member as shown in f).
In FIG. 8 (A), since the separator (8) is shown sideways, the upper edge area of the main body (8s) also has a flange (8).
It is also difficult to look directly in the direction of f).

The separator shown in FIG. 8B is a separator.
(8) Fixing bracket (8) for fixing the jaw (8Fx), the cross section of which is a U-shaped "jaw" in both end regions, and a single-character bottom plate (8Fb) in the middle region . That is, in the separator (8), the wall plate (8Fw) rises substantially perpendicularly to the bottom plate (8Fb) from approximately both end regions at the longitudinal edge of the elongated bottom plate (8Fb), and the shadow casts from the top edge region to the bottom plate (8Fb). The top plate (8Fn) is extended.

In order to actually fix the separator (8) to the top surface of the sub-spar (8B), the flange (8f) of the separator (8) standing upright with the flange (8f) in contact with the sub-spar (8B). ) Is a fixing bracket (8F) with the bottom plate (8Fb) sunk under the child girder (8B).
x) is sandwiched between the U-shaped portions in FIG.
See (C).

FIG. 8 (C) is an abbreviation of each child girder (8B) for connecting the left parent girder (8A1) and the right parent girder (8A2) constituting the electric circuit supporting girder in parallel. As a result of the separator (8) being fixed to the center portion via the flange portion (8f), the upper surface of each sub-spar (8B) is an electric path supporting girder vertically divided left and right.

The connection structure covered in FIG.
The mold fixing bracket (9) itself is a girder for supporting an electric path with a structure of assembling the girder members using the same. FIG. 9 (A) shows the Z-shaped fixing bracket (9) itself, and an upright main body (9s) occupying a substantially middle area of a relatively narrow metal plate has a main girder (9).
The top plate (9t), which is in contact with the outer surface of (A) and the upper edge area of the main body (9s) is bent in a substantially horizontal direction, holds down the top surface of the main girder (9A) and An inner locking claw (9c) formed by bending an edge region of the plate portion (9t) downward prevents the main girder (9A) from falling inside. On the other hand, the lower edge area of the main body (9s) is bent toward the side opposite to the top plate to form a flange (9f). The flange portion (9f) is provided with a through hole for a set screw which is commonly used to fix the flange portion (9f) to the top surface of the sub-girder (9B) constituting the electric circuit supporting girder. In many cases, the through holes are formed as long holes extending in a direction perpendicular to the surface of the main body (9s) (not shown).

9 (B), the main girder (9A) is fixed to the top surface of the cross beam (9C) by a Z-shaped fixing bracket (9). This is a state before being suspended from above by the suspension bolts (9CB). That is, while the main body (9s) is brought into contact with the front side of the main girder (9A), the main girder (9t) and the back side pawl (9c) are used by the main girder (9c).
(9A) is held, and its flange portion (9f) is brought into contact with the opening side of the C-shaped channel serving as the horizontal rail (9C). Next, after the high nut (9HN) is positioned in this opening, the fastening bolt (CS) is inserted through the through hole (9h) formed in the flange portion (9f), and screwed into the high nut (9HN). Let it. This high nut
(9HN) is the same as above.

FIG. 9 (C) shows a state in which the electric circuit supporting girder is fixed to the top surface of the C-shaped channel which is the cross member (9C). Girder (9A) is section Z
It is fixed to the top surface of the horizontal rail (9C) by the mold fixing bracket (9), and furthermore, hanging bolts (9CB) are attached to both end areas of the horizontal rail (9C) by the clamping fixture (12) described later. The shape and mutual relationship of each member in the closed state.

What is included in FIG. 10 is a J-shaped bracket (1
(0) and a J-type fixing bolt and nut (10CB), and a connection structure for fixing the main girder (10A) constituting the girder for supporting the electric circuit to the upper surface of the cross member angle (10B). .

The fastening fixture shown in FIG. 10A is composed of a J-shaped cross-section fitting (10) used as a fixing bracket for the crosspiece angle and a J-shaped fixing bolt and nut (10CB) penetrating therethrough. The former is used as a fixing bracket for the angle material, which is a horizontal member (10C), and the main body (10s) located in the middle area of the relatively narrow metal plate is substantially flat. The upper region is bent substantially perpendicularly to the main body to form a top plate (10t), and a through hole (10
h) and insert the J-type fixing bolt (10CB).
On the other hand, the lower region of the main body (10B) is bent in the opposite direction to the top plate (10t) to form a hook-shaped engaging claw (10c).

The J-type fixing bolt (nut) (10CB) is used in an inverted state in which the hook portion is located at the upper end, and a screw is engraved in the lower end area, that is, the end area of the linear portion, and the other side of the combination is used. Screw with a nut.

The connection structure shown in FIG.
C), the main girder (1
0A), and fix the J-type fixing bolt and nut (10CB) to the main girder (10A).
Hooks on the top surface of the product and hangs down.
Hook the locking claw (10c) of (10) on the lower edge of the angle, which is the cross member (10C), and pull it up through the through hole (10h) of the top plate (10t).
This is a state in which the mold fixing bolt is inserted and tightened and fixed by a nut.

FIG. 11 includes a hanging bolt mounting bracket (11) composed of a J-shaped cross-section fixing bracket (11) and a U-shaped cross section (11EW) made of an elastic metal plate. In this state, the suspension bolts (11CB) are mounted so as to protrude outward from the parent girder (11A) of the electrical path supporting rack (11R).

FIG. 11A mainly shows a J-shaped fixing bracket (11) and a U-shaped plate (11E) made of an elastic metal.
W), the former being a J-shaped cross-section mounting bracket of the preceding paragraph.
The same thing as (10) is sufficient, but the shape of the locking claw (11C) is slightly different from that in the case of locking the lower edge of the angle, which is the cross member in the preceding paragraph, and it is almost fitted to the lower edge of the main girder (11A). The hook-shaped portion (11c) is usually shaped in a small U-shape so that it can be mounted.

The U-shaped plate (11EW) is fitted such that the J-shaped fixing bracket (11) comes into contact with the locking claw (11c) on the lower surface of the main girder (11A) and pulls it up. After the parent girder (1
1A) and the top plate portion (11t) of the J-section fixing bracket (11) are mounted so as to be clamped together.

Therefore, the U-shaped plate (11EW) has a flange (11E) whose two opposite edges are bent substantially vertically in the same direction.
It is important that the distance between the two flanges is not too short or too short in order to fulfill the above-mentioned clamping function by both of them. A through hole (11h) is drilled substantially at the center of the top plate (11t) of the J-shaped fixing bracket (11), and a through hole [(11h) is also provided at the corresponding position of the U-shaped plate (11EW). And (11Eh)].

FIG. 11 (B) shows a J-section plate (10) and the above-mentioned U-shaped plate (11EW) holding the main girder (11A) of the electric circuit supporting rack from below and a U-shaped cross section. Plate (11EW) from the top, and sandwiched from both sides with flanges (11Ef) of a U-shaped cross-section plate (11EW), common through holes [(11h) and (11E)
h)] shows a state in which the common hanging bolt (11CB) is inserted and then tightened with the nut (CN).

The structure covered in FIG. 12 is an elastic fixing plate (12F
X) and high nut (12HN) clamping fixture (12)
And the main girder (12A) of the circuit support rack
This is a hanging assembly structure that is mounted and fixed on the opening side of the C-type channel C).

FIG. 12 (A) shows the shape of each fixing bracket constituting the above-mentioned clamping fixture (12). First, the elastic fixed plate (12FX) is made of a substantially flat rectangular metal plate,
The main body part (12s) occupying most of the part, the holding claw part (12pf) provided on one edge thereof, and the opposite claw part of the holding claw part (12pf)
And a guide flange (12gf) formed by bending to the same side as above, and a through hole (12h) is formed substantially at the center of the main body (12s). The width of the guide flange (12gf) is sufficient to allow the guide flange (12gf) to be slidably fitted in the groove (12Bg) located on the top surface of the horizontal rail (12B) formed of a C-shaped channel that is the horizontal rail (12C).

On the other hand, the high nut (12HN) is made of a relatively narrow elastic metal plate, and occupies most of the central area of the main body.
(12Hs) and a holding claw portion (12Hp) occupying both short side areas thereof, and a through hole (12Hh) is formed substantially at the center thereof. The holding claw (12Hp) located at both end areas of the high nut (12HN) slightly warps upward to make the body (12Hs) narrow, and performs a spring function, and the high nut (12HN)
The total length of the long side is the groove of the C-shaped channel (12B
g) is less than or equal to the inner wall width sandwiching g).

FIG. 12 (B) shows a main girder (12A) of a rack (girder) for supporting an electric circuit, which is fastened and fixed to the top surface of a horizontal rail (12C) with the above-mentioned clamping fixture (12). At the same time, suspending bolts near both ends of the horizontal rail (12C) with the fixing bracket (12)
(12CB) is fixed.

[0070]

The electric circuit connection structure coated with a high corrosion resistant alloy according to the present invention has the following various effects: (1) Two or more electric circuit materials are connected to each other to strongly corrode a girder material for electric circuit support. There is almost no danger of corrosion at least from the joints even when placed in a conductive environment; (2) Electrical girder members having a highly durable and see-through protective coating on the surface of a coating made of a high corrosion resistant alloy are It is hard to cause abrasion or local damage of the coating made of the high corrosion resistant alloy even in an environment where it is exposed to scattering of metal fine powder or sand particles; Some of the high corrosion resistant coatings can be firmly fixed to other girders while preserving them.

[Brief description of the drawings]

FIG. 1 is an example of a horizontal or vertical linear electric circuit support structure in which a connection structure encompassed in FIG. 1 is a rear elevational view of a linear connection fitting, and FIG. FIG. 1B shows a state before the above-mentioned connection structure is formed, and FIG. 1C shows a connection structure tightened and fixed with a square root screw or a square root bolt as a connection screw and a nut.

FIG. 2 shows a connection structure covered in FIG.
And a connection metal fitting attached thereto. FIG. 2A shows an inside bend rack, and FIG. 2B shows an outside bend rack.

FIG. 3 is an L-shaped connection structure between orthogonal beams at a turning point of an electric circuit, which is included in FIG. 3;
Is an L-shaped connection girder, and FIG. 3B shows a connection structure between orthogonal child girder in an L-shaped structure formation.

4 includes a T-shaped cross connection structure, and FIG. 4A shows the entire T-shaped connection girder, and FIG.
(B) shows the connection structure between the child girders in the formation of the T-shaped structure.

FIG. 5 is an example of the connection structure of the orthogonal beams in the formation of the X-shaped structure in the example included in FIG. FIG. 5A shows the entire T-shaped connection girder, and FIG. 5B shows the connection structure between the orthogonal girder girder in forming the T-shaped structure.

6 is a connection structure in which both parent girders are connected by a vertically movable connection fitting, which is included in FIG. 6;
(A) is a vertically movable connection fitting, FIG. 6 (B) shows each member and its shape, and FIG. 6 (C) shows the connection structure, each member of the connection portion, the shape of the fastening connection device, and the like.

7 includes a connection structure in which both parent girders are connected by a horizontally adjustable connection fitting, and FIG.
(A) shows the horizontal connection fitting itself, (B) of FIG. 7 shows each member before connection, and (C) of FIG. 7 shows a connection structure and members attached thereto.

8 includes a connection structure using the separator described above. FIG. 8A illustrates a separator itself, FIG. 8B illustrates a separator fixing bracket, and FIG. Indicates a connection structure thereof and members attached thereto.

9 includes a connection structure using the above-described Z-shaped fixing bracket, and FIG. 9A illustrates the Z-shaped fixing bracket itself, and FIG. FIG. 9 (C) shows a structure in which the main girder of the girder for supporting the electric path is fixed to the cross beam by a Z-shaped fixing bracket before being fixed to the top surface of the cross beam by the fixing bracket.

FIG. 10 is a cross-sectional view of a J-shaped bracket and J
This is a tightening and fixing structure for a main girder constituting a combination girder and a fixing bolt with a mold bolt (nut) and an electric path supporting girder mounted on the top surface of the horizontal rail. FIG. 10A shows the configuration of a J-shaped plate, and FIG. 10B shows a state in which the main girder of the electric path supporting girder is fastened to the upper surface of the crosspiece by the fixing bracket and the J-shaped bolt.

11 includes a J-shaped cross section, a U-shaped cross section, and an assembled structure in which a rack for supporting an electric path can be hung therewith. FIG. 11 (A) is a cross-sectional view. Combination of a J-shaped fitting and a U-shaped fitting,
FIG. 11 (B) shows a state in which it is used to protrude to the outside of the girder for supporting the electric path and to attach a suspension bolt.

12A and 12B show a clamping fixture including an elastic fixing plate and a high nut and a suspension connection structure using the clamping fixture, and FIG. 12A illustrates the shape and configuration of the clamping fixture. FIG. 12B shows a state in which the main girder of the electric circuit supporting girder is fixed to the upper surface of the horizontal rail with the above-mentioned clamping fixture, and further, hanging bolts are fixed near both ends of the horizontal rail. Show.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Straight connection metal fitting 2 Bend rack (general term; curvilinear electric-circuit support girder) 3 L-shaped connection girder 4 T-shaped connection girder 5 X-shaped connection girder 6 Up-and-down free connection metal 7 Horizontal free connection metal 8 Separator 9 Section Z Mold fixing bracket 10 Cross-section J-shaped fixing bracket 11 Fixing bracket mainly composed of a J-shaped cross-section plate and a U-shaped bracket 12 Clamping fixing bracket 1A composed of an elastic fixing plate and a high nut 1A Constructs a linear electric circuit support girder Main girder (generic name) 1B Child girder constituting a girder for supporting a straight electric circuit (generic name) 2A Main girder (generic name) composing a girder for supporting a curved electric circuit (bend rack) 2B Child constituting a girder for supporting a curved electric circuit Girder (generic name) 2i Inside bend rack 2o Outside bend rack 3A Parent girder (generic name) constituting L-shaped connection girder 3B Child girder (generic name) constituting L-shaped connection girder 3C Three-jaw connection bracket 4A T-shaped Configure connection digits Girder (generic name) 4B Child girder forming T-shaped connection girder (generic name) 4C Three-jaw connection fitting 5A Main girder forming X-geared connection girder (generic name) 5B Child girder forming X-shaped connection girder (generic name) 5C Three-claw connection bracket 6A Master girder that constitutes a straight circuit support girder (general name) 6B Child girder that constitutes a straight circuit support girder (generic name) 7A Master girder that constitutes a straight circuit support girder (generic name) 7B Sub-girder constituting a straight line support girder (general name) 8A Parent girder constituting a straight line support girder (general name) 8B Sub-girder constituting a straight line support girder (generic name) 9A Straight line Main girder forming support girder (generic name) 9B Sub-girder forming girder for linear electric circuit (generic name) 9C Channel-type cross beam 10A Main girder forming girder for linear electric circuit support (generic name) 10B Linear Sub-girder (general term) that composes the girder for supporting electric circuit 10C Angle-type horizontal beam 11A Supporting linear electric circuit Main girder constituting a girder (generic name) 11B Child girder constituting a girder for linear electric circuit support (generic name) 12A Main girder (generic name) constituting a girder for linear electric circuit support 12B Child constituting a girder for linear electric circuit support Girder (generic name) 12C Channel type horizontal rail 8Fx Fixing bracket with jaws at both ends 10CB J-shaped bolt 11CB Hanging bolt 11EW Cross-section U-shaped fixing bracket 12HN High nut

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location F16L 3/22 F16L 3/22 B 3/223

Claims (13)

[Claims] 1. A highly corrosion-resistant alloy coating comprising aluminum, zinc and silicon on the surface of a steel substrate, said coating having an average alloy layer density of 3.5 to 3.7 kg / m ² and an average alloy Two or more electric circuit materials having a layer thickness of 25 μm or more and applied to the surface of a base material are mutually fixed by one or more kinds of fastening means selected from corrosion-resistant steel screws and corrosion-resistant steel rivets while preserving their high corrosion resistance. Connection structure of electrical circuit supporting materials configured by connecting. 2. The high corrosion resistant alloy is an alloy mainly formed of about 55 ± 0.5% by weight of aluminum, 43.4 ± 0.5% by weight of zinc and 1.6 ± 0.3% by weight of silicon. Item 2. The connection structure according to Item 1. 3. The connection structure according to claim 1, wherein the corrosion-resistant steel is a SUS304 compliant product specified in Japanese Industrial Standards (JIS 3141) for stainless steel. 4. The connection structure according to claim 1, wherein the electric circuit material further comprises a highly durable and transparent protective coating having an average layer thickness of 27 to 40 μm on the surface of the highly corrosion-resistant alloy coating. . 5. A two-or-more girder between two or more electric circuit supporting girders by means of a linear connecting member having a pseudo U-shaped cross section and a perforated hole through which a fastening member is inserted into a wall surface. The connection structure according to claim 1, wherein the connection structure is connected in a straight line. 6. A through hole in which a plurality of parallel-located cross sections are connected in a pseudo U-shaped curved parent girder with a plurality of child girder, and a fastening material is inserted into a terminal region of the parent girder. Is a curved connecting girder (bend rack) and auxiliary metal fittings, the cross-section of which is a pseudo-U-shape, and the through-hole through which the fixing material is inserted into the wall is substantially perpendicular to the longitudinal direction. The connection structure according to any one of claims 1 to 4, wherein the parent girder of the two or more electrical path supporting girder is connected in a curved shape by the perforated metal fitting. 7. A vertically connecting or horizontally connecting metal fitting having an intermediate joint between two plate-like members having a pseudo U-shaped cross section, and a through hole through which a fastening material is inserted is inserted into a wall of the connecting metal. The connection structure according to any one of claims 1 to 4, wherein at least two main girders constituting two or more electric path supporting girders are rotatably connected by a perforated universal connecting fitting. 8. An L-shaped, T-shaped or X-shaped connecting girder installed in an area centered on an intersection of two or more circuit-supporting girder, two of the sub-girder constituting the connecting girder. 5. A T-shaped abutment, wherein the three-jaw connection fitting is crowned at the abutment point and fixed by a fastening member.
The connection structure according to any one of the above. 9. A vertically divided electric circuit supporting girder provided with a separator having a substantially L-shaped or substantially T-shaped cross section, wherein the flange of the separator is mounted on the top surface of a sub-girder constituting the electric circuit supporting girder. The connection structure according to any one of claims 1 to 4, wherein the fixing member is fixed to the child beam by both jaws of a fixing bracket having both ends jaws abutting on a lower surface of the child beam. 10. A channel-shaped crosspiece in which a Z-shaped cross-section fixing fitting has a top plate portion and a locking portion fitted on the top surface of a main girder of an electric path supporting girder, and a flange portion thereof is located below. The connection structure according to any one of claims 1 to 4, wherein the connection structure is fixed by fastening and fixing means while being placed on the opening side. 11. A connection structure in which an electric path supporting girder is fixed on an angle-type horizontal rail by a combination metal fitting of a J-type bolt and a J-shaped cross-section fixing metal fitting, wherein a hook-shaped part of the J-type bolt is an electric circuit. It is suspended in a state of being engaged with the top surface of the main girder constituting the supporting girder, and is lifted up in a state in which the locking portion of the J-shaped fixing bracket is engaged with the lower edge of the horizontal rail, and its top plate portion The connection structure according to any one of claims 1 to 4, wherein a J-bolt is inserted through said through hole and fastened and fixed. 12. A U-shaped fixing bracket having a U-shaped cross section from above when a J-shaped fixing metal fitting is engaged with a lower edge of a main girder constituting a girder for supporting an electric path at a locking portion thereof. The connection structure according to any one of claims 1 to 4, wherein a suspension bolt is attached to an overhang formed by being crowned so as to sandwich the edge of the top plate of the J-shaped fixture. 13. A connection structure in which a parent girder constituting a girder for supporting an electric path is fixed to an opening side of a channel type horizontal rail located therebelow, and an elastic fixing plate with claws constituting a clamping fixture. Is placed on the lower edge flange of the main girder, and the high nut, which is an elastic plate-like fastening tool, is located inside the channel-type horizontal rail and is clamped to the through hole formed in the clamp. 2. A fixing member inserted through a fixing member.
5. The connection structure according to any one of claims 4 to 4.