Suspension bolt reinforcement gear
The suspension bolt reinforcement system addresses the inadequacy of conventional seismic resistance by using a vertical and horizontal reinforcing member with a connecting member and metal fitting, enhancing stability and resilience against lateral and vertical sway.
Patent Information
- Application Number
- JP2024073936
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2023-12-27
- Filing Date
- 2024-04-30
- Publication Date
- 2025-07-09
AI Technical Summary
Conventional suspension bolt reinforcements are insufficient in providing seismic resistance against lateral and vertical sway during earthquakes.
A suspension bolt reinforcement system comprising a specified number of hanging bolts arranged vertically, with a reinforcing member consisting of a vertical and horizontal part joined by a connecting member, and a reinforcing metal fitting that connects to the hanging bolt, enhancing flexibility and stability.
The system provides enhanced seismic resistance in both horizontal and vertical directions, improving the structural integrity of suspended equipment during earthquakes.
Smart Images
Figure 2025104198000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a reinforcing tool for a suspension bolt used, for example, to suspend and install air conditioning equipment or the like from the ceiling of a building.
Background Art
[0002] Conventionally, the following techniques are known as techniques related to reinforcing tools for suspension bolts.
[0003] The support device is connected to a mounting portion provided so as to project laterally on a pair of parallel side surfaces of the ceiling suspension, and supports the ceiling suspension. This support device includes a first member connected to a pair of mounting portions that project laterally on one side surface of the ceiling suspension, a second member connected to a pair of mounting portions that project laterally on the other side surface, and a connecting member that connects the first member and the second member to each other with the first member in close contact with one side surface and the second member in close contact with the other side surface.
[0004] By such a technique, the seismic resistance against lateral sway on the side surface of the ceiling suspension where it is difficult to attach a brace is improved (see Patent Document 1).
Prior Art Documents
Patent Documents
[0005]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0006] However, with such conventional reinforcing tools, the reinforcement of the suspension bolts was not sufficient against lateral sway and vertical sway caused by an earthquake.
[0007] SUMMARY OF THE PRESENT EMBODIMENT In consideration of the above-mentioned problems with conventional reinforcements, an object of the present invention is to provide a suspension bolt reinforcement having improved earthquake resistance. [Means for solving the problem]
[0008] The first aspect of the present invention is A specified number of hanging bolts arranged in parallel in the vertical direction for hanging the equipment to be hung. A suspension bolt reinforcement that is attached to the position of A reinforcing member consisting of a vertical part and a horizontal part that is joined to each hanging bolt, and two reinforcing members A connecting member for connecting the two members, the reinforcing member is configured by two L-shaped members fixed together at their vertical sides, the two vertical sides form the vertical portion, the two horizontal sides of the two L-shaped members form the horizontal portion, and the two horizontal sides form a predetermined angle with each other in a plan view, The connecting member connects the horizontal portions of the two reinforcing members to each other, This is a hanging bolt reinforcement device, characterized in that for each of the hanging bolts, a reinforcing metal fitting connects the vertical portion of the reinforcing member to a part of the hanging bolt or an intermediate member attached to the hanging bolt.
[0009] The second aspect of the present invention is The reinforcing metal fitting is formed of a U-shaped or L-shaped cross-section member, the upper and lower parts of which protrude laterally from the main body, and each of the protruding parts has a bolt mounting hole, This is the first hanging bolt reinforcement of the present invention, in which these bolt mounting holes are used to connect between the vertical portion of the reinforcing member and a part of the hanging bolt or an intermediate member attached to the hanging bolt.
[0010] The third aspect of the present invention is The intermediate member is a member attached to the portion of the suspension bolt between the two reinforcing members joined to two predetermined upper and lower positions of each of the suspension bolts, and is the suspension bolt reinforcement tool of the second invention.
[0011] The fourth invention is The suspension bolt is the suspension bolt reinforcement tool of the third invention, wherein the upper end is connected to a ceiling or a suspension base attached to the ceiling, and the lower end is connected to the equipment to be suspended.
[0012] The fifth invention is The connecting member is the suspension bolt reinforcement tool of the fourth invention, which has higher flexibility than the reinforcing member.
[0013] The sixth invention is A reinforcing brace is attached between the plurality of suspension bolts, the reinforcing member and the connecting member are arranged below the reinforcing brace, the upper end of the reinforcing brace is connected to the suspension bolt, and the lower end of the reinforcing brace is connected to the horizontal portion of the lower reinforcing member, which is the suspension bolt reinforcement tool of the fifth invention.
Effect of the Invention
[0014] According to the present invention, a suspension bolt reinforcement tool with higher seismic resistance can be realized both in the horizontal direction and in the vertical direction.
Brief Description of the Drawings
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Embodiments for Carrying Out the Invention
[0016] The embodiments of the present invention will be described in detail with reference to the drawings.
[0017] Figs. 1 to 60 are diagrams for explaining a suspension bolt or the like without the reinforcing metal fitting of the present invention.
[0018] Figs. 1 to 40 are drawings such as front views showing examples of a suspension bolt reinforcing tool according to an embodiment of the present invention. An air conditioning device is suspended from the suspension bolt reinforced by this suspension bolt reinforcing tool.
[0019] Fig. 1 is a front view showing a state in which an air conditioning device 2 is suspended by four suspension bolts 1 connected to a ceiling, and Fig. 2 is a plan view thereof.
[0020] In Figs. 1 and 2, the lower part 2a of the air conditioning device 2 is suspended by the lower ends 1a of the four suspension bolts 1. Reinforcing braces 3 are respectively attached between the upper parts 1b of the four suspension bolts 1.
[0021] Furthermore, a suspension bolt reinforcing tool 4 is attached to a predetermined position of the suspension bolt 1. In this example, it is attached below the above-mentioned reinforcing brace 3 and at a position slightly above the air conditioning device 2.
[0022] This suspension bolt reinforcing tool 4 is composed of a reinforcing member 4a and a connecting member 4b that connects the two reinforcing members 4a, 4a to each other.
[0023] As shown in Figs. 3 to 6, this reinforcing member 4a is composed of a vertical part 4a1 and a horizontal part 4a2. The reinforcing member 4a is formed by fixing the vertical sides of two L-shaped members 40, 40 to each other. The two vertical sides thereof form the vertical part 4a1, and the horizontal side forms the horizontal part 4a2. The two horizontal sides thereof form an angle θ in a plan view.
[0024] The reinforcing member 4a will be further described in more detail. FIG. 3 is a view seen from the outside, FIG. 4 is a view seen from the inside, FIG. 5 is a view seen from above, and FIG. 6 is a view seen from below.
[0025] This L-shaped member 40 is made of an elongated flat plate. At the lower end 4a12 of the vertical portion 4a1 of the vertical side, a semi-circular lower end attachment portion 41 having a hole 41a is formed. Further, a hole 40a is formed near the base of the horizontal portion 4a2 which is the horizontal side.
[0026] Furthermore, the upper end edge of the horizontal portion 4a2 is bent horizontally to form a horizontal plate 42, and the tip edge of the horizontal portion 4a2 is bent vertically to form a vertical plate 43. A hole 43a is formed in this vertical plate 43.
[0027] Also, the portions where the vertical sides of the two L-shaped members 40 are fixed to each other are fixed to each other by the edge portions 4a11 which are bent inward by approximately 90 degrees as shown in FIGS. 3 to 6. Therefore, a concave groove portion 44 is formed outside the fixed portion.
[0028] The suspension bolt 1 is placed in contact with the inside of this concave groove portion 44, and further, the reinforcing member 4a is firmly joined to the suspension bolt 1 by a pressing metal fitting 45.
[0029] That is, as described above, a semi-circular lower end attachment portion 41 having a hole 41a is formed at the lower end 4a12 of the vertical portion 4a1 of the vertical side. The pressing metal fitting 45 is applied thereto from the outside and fixed with a bolt 46. Also, the pressing metal fitting 45 is applied from the outside using the hole 40a formed near the base of the horizontal portion 4a2 which is the horizontal side, and fixed with a bolt 46. In this way, the reinforcing member 4a is fixed to a predetermined position of the suspension bolt 1.
[0030] The presence of such a concave groove portion 44 makes it easier to stop the pressing metal fitting 45. That is, in a simple corner portion without a recess, in order to bring the suspension bolt 1 to the outside, it is necessary to fasten the fitting for stopping from the inside, which has the drawback that construction is difficult. In this example, the corner Since there is a recess in the part, the construction becomes easy.
[0031] Note that Fig. 7(A) shows an example of a reinforcing member 4a formed by punching and folding a single steel plate into a left and right L-shape. A vertical plate 43 is also formed. Fig. 7(B) shows an example in which the horizontal plate 42 described above is added to the reinforcing member 4a of (A). Fig. 7(C) shows an example in which a recess is formed by folding in the center, corresponding to the reinforcing member 4a described above. In the examples described above, the two L-shaped members 40, 40 are fixed by welding or the like at their longitudinal sides, but in the example of Fig. 7, it is formed by folding a substantially single steel plate. By doing so, the strength becomes higher. Further, since the reinforcing member 4a of (C) has a concave strip portion 44, it has a higher strength against bending than the reinforcing member of (B). Also, by that much, the plate thickness can be made thinner, the weight can be reduced, and weight reduction can be achieved.
[0032] The reinforcing member of the present invention is configured by fixing two L-shaped members at their longitudinal sides, but the concept of the reinforcing member includes a reinforcing member formed by bending a single steel plate described in Fig. 7.
[0033] Furthermore, as shown in Figs. 1 and 2, the connecting member 4b connects the horizontal portions of the two reinforcing members 4a, 4a. That is, both ends 4b1 of this connecting member 4b are inserted into the holes 43a of the vertical plates 43 of the L-shaped member 40 described above and fixed with nuts (see Fig. 7 etc.).
[0034] This connecting member 4b is rod-shaped but has higher flexibility than the reinforcing member 4a. Therefore, when the air conditioner 2 sways horizontally due to an earthquake or the like, the suspension bolt 1 sways left and right, but the reinforcing member 4a having the L-shaped member 40 as a component suppresses the horizontal sway together with the connecting member 4b. At that time, the connecting member 4b has flexibility, and due to the deformation force at the connecting portion with the reinforcing member 4a, the reinforcing member 4a allows a little horizontal sway of the air conditioner 2. That is, by having a certain degree of flexibility, it becomes a flexible structure and as a result, the seismic resistance is enhanced.
[0035] Figures 8 to 14 show examples of the suspension bolt reinforcement tool 4 using the reinforcing member 4a and the connecting member 4b of FIG. 7. They are respectively a front view and a perspective view.
[0036] Further, FIGS. 15 to 28 are examples in which the reinforcing member 4a and the connecting member 4b of FIG. 7 are used for the air conditioner 2, and they are respectively a front view and a perspective view.
[0037] FIGS. 29 to 36 are modified examples of the reinforcing member 4a. In the case of the figures, an example is shown in which there is no concave stripe portion 44 and the suspension bolt 1 is arranged inside. That is, the suspension bolt 1 is arranged inside, and the suspension bolt 1 is fixed to the downward attachment portion 47 bent inward at the lower end 4a12 of the reinforcing member 4a. Further, the connecting member 4b is connected to the end portion 4a21 bent inward of the horizontal portion 4a2 of the reinforcing member 4a.
[0038] FIGS. 37 to 40 are application examples of the reinforcing member 4a and the connecting member 4b of FIGS. 29 to 36, and are views of the suspension bolt reinforcement tool 4 composed of the reinforcing member 4a and the connecting member 4b corresponding to the case where there are four suspension bolts 1.
[0039] FIGS. 41 to 44 are examples in which the suspension bolt reinforcement tool 4 is joined to the suspension bolt 1 connected to the suspension base 49, and are application examples of the reinforcing member 4a of FIGS. 29 to 36.
[0040] FIG. 45 shows another embodiment of the present invention, in which the suspension bolt reinforcement tool 4 is also added on the reinforcing brace 3. It becomes possible to further prevent lateral sway.
[0041] FIGS. 46 to 54 show still another embodiment of the present invention, in which the suspension bolt reinforcement tool 4 of the examples of FIGS. 3 to 6 is applied, and further, an example in which the relationship with the reinforcing brace 3 is strengthened.
[0042] That is, the horizontal portion 4a2 of the reinforcing member 4a has a trapezoidal shape, and the end portion 3a of the reinforcing brace 3 is fixed thereto. That is, the upper end portion of the reinforcing brace 3 is connected to the suspension bolt 1, but the lower end portion 3a is not connected to the suspension bolt 1 and is fixed to the horizontal portion 4a2. As a result, the suspension bolt 1, the reinforcing brace 3, and the suspension bolt reinforcement tool 4 are integrated, and the seismic resistance is enhanced.
[0043] FIG. 55 is a modified example of FIGS. 46 to 54, and is an example in which a suspension bolt reinforcement tool 4 is also attached above the reinforcing brace 3. That is, in this example, both the upper end side and the lower end side of the reinforcing brace 3 are fixed to the horizontal portion 4a2 of the suspension bolt reinforcement tool 4.
[0044] FIG. 56 shows another embodiment of the present invention, in which the structure of the reinforcing member 4a is different from other examples. That is, a second horizontal portion 4a2' is also provided on the lower end side of the vertical portion 4a1, and a second connecting member 4b connects between the second horizontal portion 4a2 of the corresponding other reinforcing member 4a. As a result, the seismic resistance is further enhanced.
[0045] FIG. 57 is a modified example of the example of FIG. 56, and is an example in which a steel plate panel 50 connects between the first connecting member 4b and the second connecting member 4b. Furthermore, the seismic resistance is enhanced.
[0046] FIGS. 58 to 60 show the case of suspending a duct 51 or the like, and there are two suspension bolts 1. It should be noted that the present invention can also be applied when there are three suspension bolts 1. If there are multiple ones, the number is arbitrary.
[0047] The following FIGS. 61 to 87 are explanatory views of a suspension bolt or the like provided with the reinforcing metal fitting 6 of the present invention.
[0048] That is, FIGS. 61 to 67 are, in order, a front view, a right side view, a left side view, a rear view, a plan view, a bottom view, and a perspective view of the single reinforcing metal fitting 6 of the present invention.
[0049] The reinforcing fitting 6 is made of, for example, channel steel. Its upper part 6a, lower part 6b, and middle part 6c protrude laterally from the main body part 60. The protruding parts 6d, 6e, 6f thereof respectively have bolt mounting holes 6g, 6h, 6i. Using these bolt mounting holes 6g, 6h, 6i, as will be described later, the vertical part 4a1 of the reinforcing member 4a is connected to a part of the suspension bolt 1 or an intermediate member 7 attached to the suspension bolt 1.
[0050] These protruding parts 6d, 6e, 6f form a predetermined angle as shown in the figure in plan view. The angle is adapted to the shape of the vertical part 4a1 of the reinforcing member 4a. The protruding part 6f of the middle part 6c may be absent.
[0051] And for each suspension bolt 11 of the suspension bolt 1, the reinforcing fitting 6 as described above connects between the reinforcing member 4a and a part of the suspension bolt 1 or an intermediate member 7 attached to the suspension bolt 1.
[0052] That is, Fig. 68 shows a case where the reinforcing members 4a, 4a are attached at two locations, upper and lower, to one suspension bolt 1, and an intermediate member 7 is installed on the part of the suspension bolt 1 between the vertical parts 4a1, 4a1 of the two reinforcing members 4a, 4a. The reinforcing fitting 6 connects the intermediate member 7 and the vertical part 4a1. In the figure, it is an example where the protruding part 6f of the middle part 6c is absent. In the examples described below, there may also be cases where the protruding part 6f of the middle part 6c is absent. Furthermore, in this example, the end part 3a of the reinforcing brace 3 is connected between the vertical part 4a1 of the reinforcing member 4a and the intermediate member 7.
[0053] This can firmly prevent the bending of the suspension bolt 1 that tends to occur near the end of the intermediate member 7 for strengthening the suspension bolt 1.
[0054] Fig. 69 shows a case where the reinforcing fitting 6 is longer in the vertical direction compared to the case of Fig. 68, and it is connected to the uppermost or lowermost position of the vertical part 4a1, enabling stronger reinforcement.
[0055] Note that, as the material of the reinforcing fitting 6, not only channel steel but also members with various structures such as members with a U-shaped cross-section or members with an L-shaped cross-section can be used.
[0056] Figures 70(A) and (B) are partially enlarged views of a state where the reinforcing fitting 6 has not been attached yet in order to make the effect of this reinforcing fitting 6 easier to understand. As shown in the figure, the intermediate member 7 is installed on the suspension bolt 1 using bolts or the like. The suspension bolt 1 is reinforced. The end portion 3a of the reinforcing brace 3 is also connected to the suspension bolt 1 therebetween. Still, the suspension bolt 1 may break near the end portion of the intermediate member 7.
[0057] Therefore, as shown in Figure 71, the reinforcing fitting 6 is attached. This prevents it from breaking. The protruding portion 6d protruding from the upper portion 6a of the reinforcing fitting 6 is bolt-fixed to the intermediate member 7, the protruding portion 6e protruding from the lower portion 6b is bolt-fixed to the lower portion of the vertical portion 4a1 of the reinforcing member 4a, and further, the protruding portion 6f protruding from the intermediate portion 6c is bolt-fixed to the upper portion of the vertical portion 4a1. By connecting the long distance at three locations, it becomes stronger. Figure 72 shows a state where it is suspended from the ceiling in such a reinforced state.
[0058] Figures 73 to 78 are, in order, the front view, right side view, left side view, rear view, plan view, and bottom view thereof.
[0059] Figures 79, 80, and 81 show the connection structure of the reinforcing fitting 6 when the intermediate member 7 is absent. The connection of the protruding portion 6d of one of the reinforcing members 4a to the vertical portion 4a1 is as described above. However, since the intermediate member 7 is absent, the other protruding portion 6e of the reinforcing fitting 6 is connected to the suspension bolt 11. At that time, the end portion 3a of the reinforcing brace 3 is connected by clamping at the place where it is connected to the suspension bolt 1. Figure 80 is a partially enlarged view of a state of connection to the upper reinforcing member 4a. Figure 81 is a partially enlarged view showing a state of connection to the lower reinforcing member 4a.
[0060] Figures 82 to 87 are examples when the intermediate member 7 is absent, and are, in order, the front view, right side view, left side view, rear view, plan view, and bottom view.
[0061] Note that the equipment to be suspended is not limited to the air conditioner 2 and the duct 51, and other equipment is also possible.
[0062] Also, the suspension bolt 1 may be directly attached to the ceiling or may be attached to a suspension bracket attached to the ceiling.
[0063] Note that the connecting member is not necessarily provided between adjacent suspension bolts, and may be provided between opposing suspension bolts in addition to adjacent suspension bolts. Correspondingly, three or more horizontal portions may be provided for one vertical portion.
Industrial Applicability
[0064] The suspension bolt reinforcement tool in the present invention can enhance seismic resistance more, and thus is useful when suspending an air conditioner or the like from the ceiling.
Explanation of Reference Numerals
[0065] 1 Suspension bolt 2 Air conditioner 3 Reinforcing brace 3a End 4 Suspension bolt reinforcement tool 4a Reinforcing member 4a1 Vertical portion 4a11 Edge portion 4a12 Lower end 4a2 Horizontal portion 4a2‘ Second horizontal portion 4a21 End portion 4b Connecting member 4b1 Both ends 40 L-shaped member 40a Hole 41 Lower end attachment portion 41a Hole 42 Horizontal plate 43 Vertical plate 44 Concave strip portion 45 Pressing fitting 46 Bolt 46‘ Joint bolt Lower attachment part Upper attachment part Hanging platform Panel Duct Pipe Reinforcing fitting Upper part Lower part Middle part Protruding part Protruding part Protruding part Bolt mounting hole Bolt mounting hole Bolt mounting hole Body part Intermediate member
Claims
1. A suspension bolt reinforcement device attached to a predetermined position of a plurality of vertically parallel suspension bolts for suspending a device to be suspended, comprising a reinforcement member composed of a vertical portion and a horizontal portion joined to each suspension bolt, and a connecting member connecting the two reinforcement members to each other, wherein the reinforcement member is formed by fixing two L-shaped members to each other at their vertical sides, the two vertical sides forming the vertical portion, the two horizontal sides of the two L-shaped members forming the horizontal portion, and the two horizontal sides forming a predetermined angle with each other in plan view, the connecting member connecting the horizontal portions of the two reinforcement members to each other, and in each one of the suspension bolts, a reinforcing metal fitting connects between the vertical portion of the reinforcement member and a part of the suspension bolt or an intermediate member attached to the suspension bolt. The suspension bolt reinforcement device is characterized by this.
2. The reinforcing metal fitting is composed of a U-shaped cross-section member or an L-shaped cross-section member, the upper and lower parts of which project laterally from the main body portion, and each of the projecting parts has a bolt mounting hole, and the suspension bolt reinforcement device according to Claim 1, wherein the vertical portion of the reinforcement member and a part of the suspension bolt or an intermediate member attached to the suspension bolt are connected using these bolt mounting holes.
3. The intermediate member is a member attached to a portion of the suspension bolt between two reinforcement members joined to two predetermined upper and lower positions of each one of the suspension bolts. The suspension bolt reinforcement device according to Claim 2.
4. The suspension bolt has its upper end connected to a ceiling or a suspension platform attached to the ceiling, and its lower end connected to the device to be suspended. The suspension bolt reinforcement device according to Claim 3.
5. The connecting member has greater flexibility than the reinforcement member. The suspension bolt reinforcement device according to Claim 4.
6. A reinforcing brace is attached between the plurality of suspension bolts, the reinforcement member and the connecting member are arranged below the reinforcing brace, the upper end portion of the reinforcing brace is connected to the suspension bolt, and the lower end portion of the reinforcing brace is connected to the horizontal portion of the lower reinforcement member. The suspension bolt reinforcement device according to Claim 5.
Citation Information
Patent Citations
Support device
JP2020045672A