Joint structure

Abstract

This joint structure achieves rigid joints comparable to those of rigid joints using lightweight aluminum sections, resulting in a rigid frame structure. [Solution] The column members and beam members are made of H-shaped steel, and the way in which the column members and beam members come into contact with each other is as follows: Type 1: The short side end face 3 of H-shaped steel 1a comes into contact with the flange 5 of another H-shaped steel 2a; Type 2: The short side end face 3 of H-shaped steel 2b comes into contact with the long side end face 4 of another H-shaped steel 2a; Type 3: The ends of the flanges 5 of the two H-shaped steels 1a and 2b come into contact with each other. In Type 1 contact, the short side end In the first type of joint, the web 6 of an H-shaped steel beam 1a having a face 3 is joined to the flange 5 of another H-shaped steel beam 2a by an L-shaped gusset 7 and bolts and nuts. In the second type of joint, the web 6 of an H-shaped steel beam 2b is joined to the web 6 of another H-shaped steel beam 2a by an L-shaped gusset 7 and bolts and nuts. In the third type of joint, the flanges 5 of two H-shaped steel beams 1a and 2b are joined to each other by an L-shaped gusset 7 and bolts and nuts.

Description

Technical Field

[0001] The present invention relates to a joining structure used in a ramen structure such as a hanging bracket for hanging air-conditioning equipment.

Background Art

[0002] Conventionally, hanging brackets for hanging air-conditioning equipment and the like on the ceiling of a factory are known, and examples of their structures include a ramen structure and a brace structure.

[0003] In the ramen structure, since there are no braces, it has the advantage of being easy to attach pipes, ducts, and air-conditioning equipment. However, since there are no braces, it has the drawback of being weak against lateral and longitudinal swaying, and as a countermeasure, rigid joining by welding is adopted.

[0004] On the other hand, in the brace structure, pin joining is possible and there is no need for welding or the like, but due to the presence of braces, there is a problem that it is difficult to attach pipes, ducts, and air-conditioning equipment.

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, from the viewpoint of easy attachment of pipes and ducts, the ramen structure is desirable. However, when the members of the hanging bracket are aluminum lightweight steel sections, welding is difficult and rigid joining is impossible.

[0006] An object of the present invention is to provide a joining structure that obtains a ramen structure that achieves a rigid joining comparable to that of welding while using aluminum lightweight steel sections in consideration of the problems of such conventional joining structures.

Means for Solving the Problems

[0007] A first aspect of the present invention is a joining structure between a column member 1 and a beam member 2 or between beam members 2 in a ramen structure including a column member and a beam member, where the column member 1 and the beam member 2 are H-shaped aluminum lightweight steel sections, The way in which the column member 1 and the beam member 2 abut or the beam members 2 abut each other is at least one of the following: a first type in which the short end face 3 of the first H-shaped lightweight aluminum section 1a abuts against the flange 5 of the second H-shaped lightweight aluminum section 2a; a second type in which the short end face 3 of the third H-shaped lightweight aluminum section 2b abuts against the long end face 4 of the second H-shaped lightweight aluminum section 2a; and a third type in which the ends 5a of the flanges 5 of the first and third H-shaped lightweight aluminum sections 1a and 2b abut each other. In the case of the first type of abutment, the web 6 of the first H-shaped lightweight aluminum section 1a and the flange 5 of the second H-shaped lightweight aluminum section 2a are joined by an L-shaped gusset and bolts and nuts. In the case of the second type of abutment, the web 6 of the third H-shaped lightweight aluminum section 2b and the web 6 of the second H-shaped lightweight aluminum section 2a are joined by an L-shaped gusset and bolts and nuts. In the case of the third type of abutment, the joint structure is characterized by joining the flanges 5 of the first and third H-shaped lightweight aluminum sections 1a and 2b with an L-shaped gusset 7 and bolts and nuts 8.

[0008] The second aspect of the present invention is: The L-shaped gusset 7 is a first joining structure of the present invention, having a triangular reinforcing rib plate 7a welded perpendicularly to the two inner surfaces.

[0009] The third invention is, Furthermore, the second joining structure of the present invention is characterized in that a reinforcing fitting with a U-shaped cross-section is attached to connect the flange 5 of the first H-shaped lightweight aluminum steel section 1a and the flange 5 of the second H-shaped lightweight aluminum steel section 2a. [Effects of the Invention]

[0010] This invention makes it possible to realize a joint structure that achieves a rigid joint as robust as a rigid joint, even while using lightweight aluminum structural steel. [Brief explanation of the drawing]

[0011] [Figure 1]Perspective view of a suspension base having a joint structure according to an embodiment of the present invention [Figure 2] (A) Perspective view of the suspension base as a structural element of an L-shaped gusset and (B) perspective view of an example of an aluminum lightweight steel section [Figure 3] Front view of the joint structure [Figure 4] Right side view of the joint structure [Figure 5] Left side view of the joint structure [Figure 6] Rear view of the joint structure [Figure 7] Plan view of the joint structure [Figure 8] Bottom view of the joint structure [Figure 9] Perspective view looking down from the left side in the front [Figure 10] Perspective view looking up from the left side in the front [Figure 11] Perspective view looking down from the right side in the front [Figure 12] Perspective view looking up from the right side in the front [Figure 13] Perspective view looking down from the right side in the rear [Figure 14] Perspective view looking up from the right side in the rear [Figure 15] Perspective view looking down from the left side in the rear [Figure 16] Perspective view looking up from the left side in the rear [Figure 17] Perspective view looking down from the left side in the front of a joint structure according to another embodiment of the present invention [Figure 18] Front view of a joint structure according to yet another embodiment of the present invention [Figure 19] Right side view of a joint structure according to yet another embodiment of the present invention [Figure 20] Left side view of a joint structure according to yet another embodiment of the present invention [Figure 21] Rear view of a joint structure according to yet another embodiment of the present invention [Figure 22] Plan view of a joint structure according to yet another embodiment of the present invention [Figure 23]Bottom view of a joint structure according to yet another embodiment of the present invention [Figure 24] Oblique view looking down from the front right. [Figure 25] Oblique view looking up from the front right [Figure 26] Oblique view looking down from the front left. [Figure 27] Oblique view looking up from the front left [Figure 28] Oblique view looking down from the rear right. [Figure 29] Oblique view looking up from the rear right. [Figure 30] Oblique view looking down from the rear left. [Figure 31] Oblique view looking up from the rear left. [Figure 32] (A) Perspective view of the reinforcing bracket, (B) Plan view [Figure 33] A perspective view of a suspension frame having a joint structure reinforced with reinforcing fittings, according to another embodiment of the present invention. [Modes for carrying out the invention]

[0012] Embodiments of the present invention will be described in detail with reference to the drawings.

[0013] Figure 1 shows a suspension frame 100 of a rigid frame structure utilizing the joint structure according to an embodiment of the present invention. Figure 2(A) is a perspective view of an L-shaped gusset 7, which is a component of the suspension frame 100, and (B) is a perspective view of a typical example of a single H-shaped lightweight aluminum section, where 3 is referred to as the short side end face, 4 as the long side end face, 5 as the flange, and 6 as the web.

[0014] Furthermore, Figures 3 to 16 are enlarged views of the area enclosed by arrow A in Figure 1.

[0015] Herein, the joint structure in this embodiment is a joint structure between a column member 1 and a beam member 2, or a joint structure between beam members 2, 2, in a rigid frame structure comprising a column member 1 and a beam member 2.

[0016] Furthermore, H-shaped lightweight aluminum steel members are used for column member 1 and beam member 2.

[0017] Here, the column member 1 and the beam member 2, or the beam members 2, 2, are in contact with each other in at least three ways: a first type in which the short end face 3 of one H-shaped lightweight aluminum steel section abuts against the flange 5 of another H-shaped lightweight aluminum steel section; a second type in which the short end face 3 of one H-shaped lightweight aluminum steel section abuts against the long end face 4 of another H-shaped lightweight aluminum steel section; and a third type in which the ends of the flanges 5, 5 of two H-shaped lightweight aluminum steel sections abut against each other.

[0018] In the first type of abutment, the web 6 of a first H-shaped lightweight aluminum section 1a having a short-side end face 3 and the flange 5 of another second H-shaped lightweight aluminum section 2a are joined by an L-shaped gusset 7 and bolts and nuts 8.

[0019] In the case of the second type of joint, the web 6 of the second H-shaped lightweight aluminum section 2a and the web 6 of another third H-shaped lightweight aluminum section 2b are joined by an L-shaped gusset 7 and a bolt and nut 8.

[0020] In the case of the third type of joint, the flange 5 of the first H-shaped lightweight aluminum section 1a and the flange 5 of another third H-shaped lightweight aluminum section 2b are joined together with an L-shaped gusset 7 and a bolt and nut 8.

[0021] Next, we will explain in detail using the joint structure enclosed by arrow A in Figure 1 as an example.

[0022] Figure 3 is a front view of the joint structure indicated by arrow A, Figure 4 is its right side view, Figure 5 is its left side view, Figure 6 is its rear view, Figure 7 is its top view, and Figure 8 is its bottom view.

[0023] Furthermore, Figure 9 is a perspective view looking down from the front left, Figure 10 is a perspective view looking up from the front left, Figure 11 is a perspective view looking down from the front right, and Figure 12 is a perspective view looking up from the front right.

[0024] Furthermore, Figure 13 is a perspective view looking down from the right rear of the structure, Figure 14 is a perspective view looking up from the right rear of the structure, Figure 15 is a perspective view looking down from the left rear of the structure, and Figure 16 is a perspective view looking up from the left rear of the structure.

[0025] In Figures 3 to 16, the first type of joint can be seen in the following locations.

[0026] In other words, in the front view of Figure 3, the short end face 3 of the first H-shaped lightweight aluminum section 1a, which is a column member 1, is in contact with the upper flange 5 of another second H-shaped lightweight aluminum section 2a, which is a beam member 2.

[0027] Furthermore, the web 6 of the first H-shaped lightweight aluminum section 1a, which has its short-side end face 3, and the flange 5 of another second H-shaped lightweight aluminum section 2a are joined by an L-shaped gusset 7 and bolts and nuts 8.

[0028] As can be seen from the front view in Figure 3, two L-shaped gussets 7, 7 are fixed to both sides of the web 6 of the H-shaped lightweight aluminum section 1a, which has a short-side end face 3.

[0029] In Figures 3 to 16, the second type of joint can be seen in the following locations.

[0030] In other words, in the right side view of Figure 4, the short end face 3 of the third H-shaped lightweight aluminum section 2b, which is a beam member 2, is in contact with the long end face 4 of the second H-shaped lightweight aluminum section 2a, which is another beam member 2.

[0031] Furthermore, the web 6 of the H-shaped lightweight aluminum steel section 2b and the web 6 of another H-shaped lightweight aluminum steel section 2a are joined together by an L-shaped gusset 7 and a bolt and nut 8.

[0032] As can be seen from the rear view in Figure 6, the two L-shaped gussets 7,7 are fixed to both sides of the web 6 of the H-shaped lightweight aluminum section 2b, respectively.

[0033] In Figures 3 to 16, the third type of joint can be seen in the following locations.

[0034] In other words, in the right side view of Figure 4, the end 5a of the upper flange 5 of the third H-shaped lightweight aluminum section 2b, which serves as beam member 2, and the end 5a of the flange 5 of the first H-shaped lightweight aluminum section 1a, which serves as another column member 1, are close together at a right angle, and the flanges 5 are joined together by an L-shaped gusset 7 and a bolt and nut 8.

[0035] Each L-shaped gusset 7 has a triangular reinforcing rib plate 7a welded perpendicularly to the two inner surfaces (see Figures 4, 5, 6, and 9).

[0036] In the above embodiment, when fixing a single L-shaped gusset 7 to the flange 5 or web 6, four sets of bolts and nuts 8 were used for fixing. However, as shown in Figure 17, a more robust connection can be achieved by using eight sets of bolts and nuts 88 for fixing.

[0037] Figures 18 to 33 show the above embodiment with the addition of a reinforcing bracket 9. Figure 32 is a perspective view (A) and a plan view (B) of the reinforcing bracket 9 alone.

[0038] As shown in Figure 32, the reinforcing bracket 9 has two parallel plates, 9a and 9b. The two plates 9a and 9b are fixed together by a middle plate 9d that connects them approximately in the center. Furthermore, half of the area below the parallel plates 9a and 9b is connected by a bottom plate 9c. The remaining portion is open.

[0039] This reinforcing bracket 9 has a U-shaped cross-section formed by one plate 9a, the other plate 9b, and the bottom plate 9c. Holes for bolts and nuts 10 are also drilled in it.

[0040] Such reinforcing brackets 9 are attached with bolts and nuts 10 to the flange 5 of the second H-shaped lightweight aluminum steel section 2a at the point where the lower end of the first H-shaped lightweight aluminum steel section 1a is attached.

[0041] Specifically, one plate 9a is connected to the flange 5 of the first H-shaped lightweight aluminum section 1a, and the other plate 9b is connected to the other flange 5 of the first H-shaped lightweight aluminum section 1a with a bolt and nut 10. When fixing it on the third H-shaped lightweight aluminum section 2b side, the other plate 9b is sandwiched inside the L-shaped gusset 7 and fastened together with the bolt and nut 10.

[0042] Furthermore, the bottom plate 9c is fixed to the upper flange 5 of the second H-shaped lightweight aluminum section 2a with bolts and nuts 10.

[0043] In this way, further reinforcement has been added.

[0044] The suspension frame 100 shown in Figure 33 has its joint structures reinforced by such reinforcing fittings 9.

[0045] Furthermore, it goes without saying that the joint structure of the present invention is applicable not only to the part indicated by arrow A in Figure 1, but also to other joint parts. It is also applicable to structures other than suspension frames. [Industrial applicability]

[0046] The joint structure in this invention is useful for joint structures such as suspension frames for hanging air conditioning equipment from ceilings, as it can achieve a rigid frame structure that is as robust as a rigid joint, even while using lightweight aluminum structural steel. [Explanation of Symbols]

[0047] 1 Column member 1a First H-shaped lightweight aluminum steel section 2 Beam members 2a Second H-shaped lightweight aluminum steel section 2b Third H-shaped lightweight aluminum steel section 3. Short side end face 4. Long side end face 5 Flange 5a edge 6 Web 7 L-shaped gusset 7a Reinforcement rib plate 8 bolts and nuts 9 Reinforcement members 10 Bolts and Nuts 100 Hanging Stand

Claims

1. A rigid frame structure comprising column members and beam members, wherein the connection between a column member (1) and a beam member (2), or the connection between two beam members (2), The column member (1) and beam member (2) are H-shaped lightweight aluminum steel sections. The way in which the column member (1) and the beam member (2) abut against each other, or the way in which the beam members (2) abut against each other, is as follows: a first type in which the short end face (3) of the first H-shaped lightweight aluminum section (1a) abuts against the flange (5) of the second H-shaped lightweight aluminum section (2a); a second type in which the short end face (3) of the third H-shaped lightweight aluminum section (2b) abuts against the long end face (4) of the second H-shaped lightweight aluminum section (2a); and a third type in which the ends (5a) of the flanges (5) of the first and third H-shaped lightweight aluminum sections (1a, 2b) abut against each other. In the case of the first type of abutment, the web (6) of the first H-shaped lightweight aluminum section (1a) and the flange (5) of the second H-shaped lightweight aluminum section (2a) are joined together by an L-shaped gusset and bolts and nuts. In the case of the second type of abutment, the web (6) of the third H-shaped lightweight aluminum section (2b) and the web (6) of the second H-shaped lightweight aluminum section (2a) are joined together by an L-shaped gusset and bolts and nuts. In the case of the third type of abutment, the joint structure is characterized in that the flanges (5) of the first and third H-shaped lightweight aluminum sections (1a, 2b) are joined together with an L-shaped gusset (7) and bolts and nuts (8).

2. The joint structure according to claim 1, wherein the L-shaped gusset (7) has a triangular reinforcing rib plate (7a) welded perpendicularly to the two inner surfaces.

3. Furthermore, the joint structure according to claim 2, wherein a reinforcing fitting (9) with a U-shaped cross section is attached to connect the flange (5) of the first H-shaped lightweight aluminum section (1a) and the flange (5) of the second H-shaped lightweight aluminum section (2a).

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