JP2004011129A - Connecting structure of channel steel for assembling lattice structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To assemble a lattice structure by easily connecting channel steels without generating the problem of catching rust in a connecting structure of channel steel for assembling lattice structure. <P>SOLUTION: Both channel frames 10 and 11 have bent pieces bent and extended opposite to each other in an L-shaped section at the opening edges of groove part openings 12 and 13. A joint auxiliary metal fitting A has a pair of first hook pieces 16 bent up and protruded in parallel from both side edges of a rectangular plate part 15, and having claw parts 16a at the angle corners of the protruding edges, and a pair of second hook pieces 17 bent up and protruded in parallel from both edges of a plate part in the opposite direction to the first hook pieces, and having claw parts 17a at the angle corners of the protruding edges. The first hook pieces are fitted to the groove opening of the base frame 10 to hook the claw parts to the bent pieces, and the second hook pieces are fitted to the groove opening of the mounting frame 11 to hook the claw parts to the bent pieces to connect both the channel frames in an orthogonal direction, whereby the lattice structure P is assembled. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
The present invention can be applied to a lattice-like structure such as a receiving pallet or a building base material made in a lattice shape using a grooved steel. In particular, in such a structure, the present invention relates to a connecting structure of a grooved steel for assembling a latticed structure, in which the grooved steels are connected in a grid and assembled.
[0002]
2. Description of the Related Art Among such lattice-shaped structures, for example, a cargo receiving pallet, there is a simple steel pallet assembled in a lattice shape by using grooved steel. Conventionally, as shown in FIG. 10, for example, as shown in FIG. 10, this simple type steel pallet has a mounting frame 2 on a base frame 1 made of a grooved steel and intersects each other so that the groove openings 3 and 4 face each other and are orthogonal to each other. They are connected and assembled as a whole in a grid.
[0003]
In this conventional simple steel pallet, a short prismatic reinforcing column 5 is used, and the reinforcing column 5 is erected at the intersection position through the groove openings 3 and 4 of both frames 1.2 and , The reinforcing columns 5 are fixedly fastened by bolts 6 and 6 and nuts 7 and 7, respectively, and the frames 1 and 2 are assembled and connected in an orthogonal direction.
[0004]
However, the conventional grooved steel connection structure described above requires time and effort for bolting each time, and the assembling work is troublesome. Rust is generated at the fastening position due to the above problem, and the rust causes a problem of rust to be received on a steel load such as an iron plate on a pallet.
[0005]
Therefore, in the related art, some grooved steel connection structures have a configuration in which both frames are welded and connected at their intersections. However, in the case of welding, there has been a problem that assembly workers are limited to persons having welding technology, and furthermore, time and labor for welding are required one by one, and the assembling work is troublesome.
[0006]
Therefore, an object of the present invention is to easily and easily connect a grooved steel without causing a problem of rust as in the prior art, in the connection structure of the grooved steel for lattice-like structure as described above. To assemble a lattice structure.
[0007]
SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a connection structure of a groove steel for assembling a lattice-like structure according to the present invention will be described below with reference to the drawings. As shown in the embodiment, a mounting frame 11 is connected to a base frame 10 made of a grooved steel in such a manner that the groove openings 12 and 13 face each other and intersect in a direction orthogonal to each other, and are assembled into a lattice as a whole. Metal fittings formed by bending a metal plate material in a structure such as a pallet P or a ceiling base material R, and a rectangular flat plate portion 15 is bent and raised from both side edges of the flat plate portion 15 in parallel. A pair of first hook pieces 16 having claw portions 16a at the corners of the protruding ends, and projecting from both end edges of the flat plate portion 15 and projecting in parallel in the opposite direction to the first hook pieces 16. Similarly, a joint auxiliary metal fitting A including a pair of second hook pieces 17 having a claw portion 17a at a corner edge of the protruding end is provided, while the groove-shaped frames 10 and 11 are respectively provided with opening edges of the groove openings 12 and 13. The first hook piece 16 is fitted into the groove opening 12 of the base frame 10 by bending the groove into a deformed groove shape having bent pieces 10a and 11a extending in a cross section L and facing each other. While hooking the claw 16a on the bent piece 10a, fitting the second hook piece 17 into the groove opening 13 of the mounting frame 11 and hooking the claw 17a on the bent piece 11a, The two groove-shaped frames 10 and 11 are connected in an orthogonal direction.
[0008]
According to a second aspect of the present invention, there is provided a connecting structure of a grooved steel for assembling a lattice-shaped structure according to the first aspect, for example, as shown in an embodiment described below with reference to the drawings. The bottom plate portion 10b is partially cut inward at the intersection with the mounting frame 11, and a rectangular hole 20 having the same width size as the groove opening 12 of the base frame 10 is provided therein. The hook portion is formed as a bent piece 10c on which the claw portion 16a of the first hook piece 16 is hooked.
[0009]
Embodiments of the present invention will be described below with reference to the drawings.
[0010]
FIG. 5 shows, as an example, a simplified pallet for cargo receiving assembled by applying the connecting structure of the grooved steel for assembling the lattice-like structure according to the present invention. In this pallet P, a plurality of base frames 10 on the lower side in the figure and a plurality of mounting frames 11 to be assembled on the upper side thereof, both made of steel grooved steel, are connected in a grid using joint auxiliary fittings A. This is a so-called single-sided skit-type steel pallet assembled.
[0011]
The base frame 10 of the receiving pallet P is formed by bending as shown in FIG. 1, and provided with bent pieces 10 a which are opposed to each other and extend in an L-shaped cross section at opening edges defining the groove openings 12. , Are formed in a deformed groove shape as a whole.
[0012]
On the other hand, the mounting frame 11 is formed to be relatively thin and bent with respect to the base frame 10, and similarly has an L-shaped cross section opposed to each other at an opening edge of a groove opening 13 having substantially the same width as the groove opening 12. A bent piece 11a is formed to extend in a curved shape.
[0013]
The joint auxiliary fitting A is formed by bending a metal plate material, for example, a steel plate material, and as shown in FIGS. 2 and 3A and 3B, a rectangular flat plate portion 15 and a flat plate portion 15. A pair of first hook pieces 16 bent at right angles from both side edges and projecting downward and parallel in the drawing, and a pair of first hook pieces bent at right angles from both end edges of the flat plate portion 15 and projected upward and parallel in the drawing. And two hook pieces 17.
[0014]
The flat plate portion 15 is formed such that the length of both side edges is adjusted to the width size of the base frame 10 and the length of both end edges is adjusted to the width size of the mounting frame 11 and slightly bent downward in the drawing near both end portions. Let me do it. As shown in FIG. 2, a projection 15a is provided near one corner of the square, and a screw hole 18 is provided therein. The first hook piece 16 has a hooking claw 16a that is symmetrical at the corner of the protruding end. Similarly, the other second hook piece 17 also has a hooking claw 17a symmetrical to the edge of the protruding end. These claw portions 16a and 17a are formed in a tapered convex shape toward the flat plate portion 15, respectively.
[0015]
When assembling the receiving pallet P, for example, the first hook piece 16 is fitted into the groove opening 12 of the base frame 10 as shown in FIG. The portion 16a is hung on the bent piece 10a, and the joint auxiliary metal fitting A is fixed to the base frame 10.
[0016]
On the other hand, the mounting frame 11 is arranged such that the groove opening 13 faces the groove opening 12 and then intersects the base frame 10 in a direction perpendicular to the base frame 10. Press 13 in. Then, while slightly opening the groove opening 13 against elasticity, the second hook piece 17 is fitted into the groove opening 13 to hook the claw 17a on the bent piece 11a, and the joint auxiliary fitting A is attached to the mounting frame 11. Also stop. As a result, the two groove-shaped frames 10 and 11 are connected via the joint auxiliary fitting A in a direction orthogonal to each other at a predetermined intersection position. The joint auxiliary fitting A drives a screw through the screw hole 18 at the projection piece 15a to prevent the both grooved frames 10 and 11 from slipping.
[0017]
Then, similarly to the above, the two groove-shaped frames 10 and 11 are sequentially connected in a cross-girder shape using the joint auxiliary fitting A, and finally assembled into a lattice shape as shown in FIG. Is constructed.
[0018]
By the way, in the illustrated embodiment described above, an example of assembling the single-sided skit type simple pallet P according to the present invention has been described. However, the present invention is not limited to this, and can be applied to, for example, assembling a double-sided pallet. That is, the mounting frame 11 can be attached to the upper and lower sides of the base frame 10 in a double-girder form, and the present invention can be applied to a double-sided pallet having the same lattice on both sides.
[0019]
In the case of this other example, as shown in FIG. 6, for example, the base frame 10 partially cuts and raises the intersection of the bottom plate 10 b with the mounting frame 11 to form a rectangular hole 20 having the same width size as the groove opening 12. Open the configuration. A cut-and-raised portion is left at the edge of the rectangular hole 20, and a bent piece 10c is erected thereat at right angles to the bottom plate portion 10c.
[0020]
At the time of assembling, the mounting frame 11 is connected to the upper side of the base frame 10, that is, the groove opening 12 side by using the joint auxiliary metal fitting A as described above, and is assembled in a lattice shape. Then, using the same joint auxiliary metal fitting A, the mounting frame 11 is connected and assembled in a lattice shape.
[0021]
In this case, for example, the first hook piece 16 is fitted into the rectangular hole 20, the hook 16a is hooked on the bent piece 10c, and the joint auxiliary metal fitting A is fixed to the bottom plate 10b of the base frame 10. After that, as described above, the mounting frame 11 is arranged so that the groove opening 13 faces the rectangular hole 20 and then intersects the base frame 10 in a direction orthogonal to the mounting frame 11, and protrudes on the bottom plate 10 b. The second hook piece 17 is pushed into the two hook pieces 17, the second hook pieces 17 are fitted into the groove openings 13, the claws 17 a are hooked on the bent pieces 11 a, and the joint auxiliary fitting A is also fixed to the mounting frame 11. Thus, on the lower side of the base frame 10 as well as on the upper side, the two groove-shaped frames 10 and 11 are connected via the joint auxiliary fitting A in a direction orthogonal to each other at a predetermined intersection position. Finally, the two-sided pallets are constructed by assembling the double-groove frames 10 and 11 on both sides in a lattice shape.
[0022]
Further, in the above embodiment, an example in which the grooved steel connection structure according to the present invention is applied to a pallet for receiving cargo is shown, but the present invention may be applied to a ceiling base material as described below. it can.
[0023]
That is, as shown in FIG. 7, the mounting frame 11 is connected on the base frame 10 by using the joint auxiliary fitting A having the above-described configuration so that the groove openings 12 and 13 cross each other in a direction orthogonal to each other. The ceiling base material R is assembled by assembling in a lattice shape. Reference numeral 25 in the figure denotes a suspension bolt that suspends the ceiling base material R.
[0024]
In the illustrated embodiment, an example is shown in which the grooved steel connection structure according to the present invention is applied to a ceiling base material R. However, the present invention is not limited to such a ceiling base material, and can also be applied to various other building steel base materials such as wall base materials.
[0025]
Furthermore, the connection structure of the grooved steel according to the present invention is exemplified above as long as the base frame and the mounting frame of the grooved steel are sequentially connected in a grid pattern to assemble a lattice-shaped structure as a whole. The present invention is not limited to receiving pallets and architectural steel base materials, and can be widely applied to other various lattice-like structures.
[0026]
By the way, in the above-described embodiment, an example is shown in which the joint auxiliary fitting A is used as a connecting fitting for the grooved steel. However, the present invention can also be used as a spacer for maintaining the interval between groove openings at a predetermined groove width with respect to a grooved steel, as exemplified below.
[0027]
In this case, as shown in FIGS. 8A and 8B and FIG. 9, the joint auxiliary metal fitting A ′ similarly bends a steel plate material, but forms a rectangular flat plate portion 30 and a flat plate portion 30. It comprises a pair of hook pieces 31 which are bent and raised at right angles from both side edges and project in parallel. The flat plate portion 30 has both side edges formed to have a length corresponding to the width size of the grooved steel 35 provided with the bent pieces 35a in the same manner as the grooved frames 10 and 11, with both side ends facing downward in the figure. Slightly bent. The hook piece 31 has a hooking claw 31a symmetrical to a corner edge of the protruding end. The claw portions 31a are each formed in a convex shape tapering toward the flat plate portion 30.
[0028]
When using the joint auxiliary fitting A 'as a spacer, the hook piece 31 is fitted into the groove opening 36 of the grooved steel 35 as shown in FIG. The metal fitting A 'is fixed to the groove steel 35. Thereby, the interval between the groove openings 36 of the grooved steel 35 is regulated by the hook pieces 31 to keep the groove width constant, and the grooved steel 35 can always be held in a predetermined groove shape.
[0029]
According to the present invention configured as described above, the following effects can be obtained.
[0030]
According to the first aspect of the present invention, the first hook piece of the joint auxiliary metal fitting is fitted into the groove opening of the grooved steel base frame, the claw is hooked on the bent piece, and the same grooved steel is attached. If the second hook piece is fitted into the groove opening of the frame and the claw is hooked on the bent piece, the two groove-shaped frames are connected crossing each other in the orthogonal direction. In addition, there is no need to assemble bolts or weld each time, and various lattice-like structures can be easily assembled using a grooved steel.
[0031]
According to the invention described in claim 2, the bottom plate portion of the base frame is cut and raised partially inward at the intersection with the mounting frame, and a rectangular hole having the same width as the groove opening of the base frame is formed therein. By providing the cut-and-raised portion as a bent piece on which the claw portion of the first hook piece of the joint auxiliary metal fitting is hooked, the joint auxiliary metal fitting can be used on the lower side of the base frame similarly to the upper side. By connecting the shape steel frames in a grid, a double-sided grid-like structure such as a double-sided pallet can be easily constructed.
[Brief description of the drawings]
FIG. 1 is a partially enlarged perspective view showing a main part of a cargo receiving pallet assembled by applying a grooved steel connecting structure for assembling a lattice-shaped structure according to the present invention.
FIG. 2 is a perspective view showing a joint auxiliary metal fitting.
FIG. 3A is a front view of a joint auxiliary fitting, and FIG. 3B is a side view.
FIG. 4 is a perspective view showing a state in which a base frame and a mounting frame are connected using a joint auxiliary metal fitting.
FIG. 5 is an overall external perspective view of a receiving pallet assembled by applying a grooved steel connection structure according to the present invention.
FIG. 6 is a partial perspective view showing the structure of a base frame when used for a double-sided pallet.
FIG. 7 is a perspective view showing a ceiling base material assembled by applying a grooved steel connection structure according to the present invention.
8 (a) and 8 (b) are perspective views and (b) a front view of a modified example of the joint auxiliary metal fitting provided in the grooved steel connection structure according to the present invention.
FIG. 9 is a perspective view showing a usage mode of a joint auxiliary metal fitting in a modified example.
FIG. 10 is a perspective view showing a connection structure portion of a channel steel used for a conventional pallet for receiving goods.
[Explanation of symbols]
A Joint auxiliary metal fitting P Receiving pallet R Ceiling base material 10 Base frame 11 Mounting frame 10a / 11a Bending piece 12/13 Groove opening 15 Flat plate part 16 First hook piece 17 Second hook piece 16a / 17a Claw part 20 Rectangular hole

Claims (2)

In a structure which is connected to a base frame made of a grooved steel in such a manner that the respective groove openings face each other and intersect in a direction orthogonal to each other and are connected to each other to form a lattice-like structure as a whole,
A joint auxiliary metal fitting formed by bending a metal plate material, comprising: a pair of first hooks having a rectangular flat plate portion and bent and raised from both side edges of the flat plate portion so as to protrude in parallel, and having a claw portion at a corner edge of the protruding end. A joint auxiliary metal fitting comprising a pair of pieces and a pair of second hook pieces which are bent and raised from both end edges of the flat plate portion and project in parallel to the first hook pieces in a direction opposite to the first hook pieces, and also have claw portions at corner edges of the protruding ends. While
The double-groove frame is formed by bending into a deformed groove shape having bent pieces that are bent toward each other at the opening edges of the groove opening and that are bent to have an L-shaped cross section,
The first hook piece is fitted into the groove opening of the base frame and the claw is hooked on the bent piece, while the second hook piece is fitted into the groove opening of the mounting frame so that the claw is formed. A grooved steel connecting structure for assembling a lattice-like structure, wherein said grooved frames are connected to each other in an orthogonal direction by being hooked on a bent piece. The bottom plate portion of the base frame is cut and raised partially inward at the intersection with the mounting frame, and a rectangular hole having the same width size as the groove opening of the base frame is provided therein, and the cut and raised portion is formed. The connection structure of a grooved steel according to claim 1, wherein the portion is formed as a bent piece on which the claw portion of the first hook piece is hooked.

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