JP4169538B2 - Seismic frame - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention holds, for example, a casing containing a protected device such as various communication devices from the periphery, and prevents earthquake of the protected device due to collapse or movement of the casing when an earthquake occurs. It is about the frame.
[0002]
[Prior art]
Conventionally, various earthquake-resistant frames of this type have been provided, and FIG. 6 is a perspective view showing an example thereof.
The earthquake-resistant frame 50 shown in FIG. 6 includes a bottom plate 51, side plates 52 and 53, and a beam member 54, and the whole is formed of a steel plate. The seismic frame 50 is installed on a double floor (duct floor, free access floor) of a building, or is installed on a floor slab via a gantry (not shown).
Reference numeral 60 denotes a housing that accommodates various communication devices as a protected device, a terminal board, a wiring board, and the like, and is held and fixed to the earthquake-resistant frame 50 by appropriate means such as bolts and joints.
[0003]
Here, since the casing 60 itself is a heavy article having high strength and high rigidity, a thick and long steel plate is also used for the seismic frame 50 that holds and fixes the casing 60, and its weight is also high. It is very heavy.
[0004]
[Problems to be solved by the invention]
As described above, the conventional seismic frame 50 is made of heavy material and is formed by assembling long members. Therefore, it requires a lot of labor and time for transportation and installation work, and the manufacturing cost is very high. Met.
In particular, when transporting each member constituting the seismic frame 50, a transport device such as an elevator may not be able to be used due to dimensional restrictions, and special tools and equipment are required for assembly and installation. There were many factors that hindered construction.
[0005]
Further, the housing 60 includes a wiring board for drawing and connecting an optical fiber cable from the outside, and these optical fiber cables are often drawn from the upper surface of the seismic frame 50. In this case, the beam member 54 or the like is usually a square or flat plate, and the optical fiber cable introduced along the outer surface thereof is bent beyond the allowable angle by the corner of the beam member 54 surface, resulting in transmission loss. May become large or transmission may not be possible.
[0006]
On the other hand, in recent years, there have been an increasing number of cases where various communication devices and the like are mounted in a so-called 19-inch rack that conforms to EIA (American National Standards Institute) standards. Since this type of rack is comparatively light, a large seismic frame 50 as shown in FIG. 6 is excessively installed to hold these racks, which is economically wasteful.
[0007]
Therefore, the present invention aims to reduce the weight, transport, and installation without compromising the rigidity, strength, and robustness of the seismic frame, and to prevent the introduction of optical fiber cables and the like. It is intended to provide a low-cost seismic frame that can hold a case such as a housing securely and appropriately.
[0008]
[Means for Solving the Problems]
In order to solve the above-described problem, the invention according to claim 1 is a seismic frame in which a casing containing a protected device is installed on a gantry, and the casing is held and fixed from the periphery thereof.
At the four positions around the left and right sides of the front and rear of the casing, the lower ends are fixed and erected by being fixed to the gantry, and the upper ends positioned above the upper surface of the casing are curved approximately 90 ° to the left and right. A strut pipe that bends in the direction and has a flange formed at its upper end,
Flange pipes are formed at both ends, connected to the flanges of the pillar pipes on both the left and right sides, and a beam pipe constructed between the upper ends of the pillar pipes above the upper surface of the housing,
A connection frame constructed between the pillar pipes before and after the housing and between the beam pipes;
A fixed beam material fixed to the support pipe or the beam pipe and connected to the upper surface of the housing to hold the housing;
The strut pipe and beam pipe, and is formed by generally cylindrical pipe member.
[0009]
The invention according to claim 2 is the invention according to claim 1, wherein a buffer material is interposed between the fixed beam material and the upper surface of the housing.
[0010]
According to a third aspect of the present invention, in the first or second aspect of the present invention, cushioning materials that contact the housing are disposed on both the left and right sides of the plurality of housing groups juxtaposed.
[0011]
The invention according to claim 4 is the structure according to claim 1, 2, or 3, wherein the support pipe and the beam pipe are connected by the bracing member.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
First, FIG. 1 shows a first embodiment of the present invention, where (a) is a front view and (b) is a side view. In FIG. 1B, illustration of fixed beam members 28 and 29, a connection plate 30, a coupling 31, a housing 100, and the like which will be described later in FIG. 1A is omitted.
This first embodiment corresponds to the invention described in claim 1.
[0013]
In these figures, reference numeral 11 denotes a pedestal fixed to the floor surface F. The quake-resistant frame of this embodiment has a flat area that can be fixed by arranging a plurality of casings 100 to be held and fixed side by side. .
Here, the case 100 is, for example, the above-mentioned EIA (American Standards Association) standard 19-inch rack, but the size, type, type, and the like of the case 100 are not limited at all. In the casing 100, various communication devices as a protected device, a terminal board, a wiring board, and a power supply device (not shown) are mounted.
[0014]
Cylindrical columnar pipes 22, 22, 23, 23 made of steel are erected at four corners on the upper surface of the gantry 11 via fixed bases 21 bolted to the gantry 11. In FIG. 1A, reference numerals 22 and 23 are attached to support pipes erected on the left and right sides in front, and the support pipes erected on the back of these are also indicated by reference numerals 22 and 23. The lengths of the support pipes 22 and 23 are determined according to the height of the housing 100.
[0015]
The upper ends of the support pipes 22 and 23 are bent at approximately 90 degrees, and flanges 22a and 23a are formed at these ends.
Also, 24 and 25 are steel cylindrical beam pipes having flanges 24a, 24b, 25a and 25b formed at both ends, respectively. These beam pipes 24 and 25 are bolted to the flanges 24b and 25a. The other flanges 24a and 25b are bolted to the flanges 22a and 23a of the support pipes 22 and 23 and connected to the support pipes 22 and 23, respectively.
As for the beam pipes, in FIG. 1A, reference numerals 24 and 25 are given to the beam pipes standing on the left and right sides in front, and the beam pipes installed behind these are also indicated by reference numerals 24 and 25. It shall be indicated by
[0016]
The two sets of gate-shaped members (each consisting of support pipes 22 and 23 and beam pipes 24 and 25) assembled in this way are moved forward and backward by a connecting frame 26 and a coupling 27 as shown in FIG. The column pipes 22 and 22, 23 and 23, the beam pipes 24 and 24, and 25 and 25 are connected to form a frame having high rigidity as a whole.
Here, the length and the number of connections of each beam pipe can be arbitrarily set according to the width and the number of the casings 100.
[0017]
Further, as shown in FIG. 1A, fixed beam members 28 and 29 made of steel square pipes or square bars connected by a connection plate 30 are installed between the two sets of support pipes 22 and 23. Both ends thereof are connected to the support pipes 22 and 23 by couplings 31. The lengths and the number of connections of the fixed beam members 28 and 29 are determined according to the interval between the support pipes 22 and 23, in other words, according to the entire width of the plurality of casings 100.
The fixed beam members 28 and 29 are fixed to the upper surface of the casing 100 by bolts or the like not shown in the figure, and serve to securely fix the plurality of casings 100 to the support pipes 22 and 23. Yes.
[0018]
According to the seismic frame of the present embodiment configured as described above, the supporting pipes 22 and 23, the beam pipes 24 and 25, and the like, which are the main constituent members, are formed of cylindrical pipes. Compared to the conventional seismic frame, the weight can be significantly reduced. In addition, each member can be transported to the installation location in a disassembled state, and each member including the fixed beam members 28 and 29 can be connected and fixed only by fastening bolts or the like. The entire assembly and fixing operation can be performed without using tools and equipment.
In particular, in the prior art shown in FIG. 6, for example, it is necessary to connect the side plates 52 and 53 and the beam member 54 by welding. However, in this embodiment, the whole can be assembled without a welding operation.
[0019]
After the plurality of casings 100 are fixed by the fixed beam members 28 and 29, the front / rear and right / left direction forces applied to the casing 100 are transferred to the four columns 22, 22, 23, 23 are transmitted in a distributed manner, and the casing 100 can be prevented from collapsing and moving, and these can be securely held. Therefore, it is possible to reliably protect the protected device inside the housing 100.
[0020]
Further, when an optical fiber cable is introduced into the housing 100, if the optical fiber cable is drawn along the outer peripheral surface of the beam pipes 24, 25, etc., there is no possibility that the cable will be bent beyond an allowable angle, and transmission loss will occur. There is no worry of fiber breakage. In this case, the connecting frame 26 that connects the front and rear beam pipes 24, 24 or 25, 25 also functions as a cable guide for guiding the optical fiber cable.
[0021]
Next, FIG. 2 shows a second embodiment of the present invention. The same components as those in FIG. The second embodiment corresponds to the invention described in claim 2.
In the second embodiment, the fixed beam members 28 and 29 and the respective casings 100 are not directly connected, but a buffer member 32 made of hard rubber or the like is interposed therebetween. The buffer material 32 is connected and fixed to the fixed beam members 28 and 29 and the housing 100 by forming bolts or female screws at both axial ends of a cylindrical rubber body, for example.
[0022]
According to this embodiment, since the force applied to the housing 100 is also absorbed by the cushioning material 32, a further vibration control effect can be obtained. In addition, it is possible to prevent abnormal noise from being generated during vibration when the fixed beam members 28 and 29 and the casing 100 are in direct contact with each other, and to prevent the casing 100 from being damaged.
The material of the cushioning material 32 is not limited to rubber, and for example, a damper enclosing air or a gel substance may be used.
[0023]
FIG. 3 shows a third embodiment of the present invention. In this embodiment, the cushioning material 33 is arranged on the upper left and right sides of a plurality of juxtaposed casings 100 (casing group), and corresponds to the invention described in claim 3. These buffer members 33 are formed by, for example, attaching hard rubber or the like to one surface of a steel substrate, and fix the substrate to one end of each of the fixed beam members 28 and 29, and a plurality of hard rubber sides. It arrange | positions in contact with the upper part of the both ends of the housing | casing 100 of this.
In this embodiment, the fixed beam members 28 and 29 are fixed to the upper surface of the housing 100 by bolts or the like as in the first embodiment.
The buffer material 33 may be formed of a damper enclosing air or a gel-like substance as described above.
[0024]
According to this embodiment, vibrations in the left-right direction can be particularly buffered by the buffer material 33. In addition to the buffer material 33, the buffer material 32 shown in FIG.
[0025]
Next, FIG. 4 shows a fourth embodiment of the present invention, and this embodiment corresponds to the invention described in claim 4.
In FIG. 4, 11A, 11B, and 11C are each a stand, and these may be formed integrally. A plurality of housings 110 to be held are juxtaposed and fixed on the gantry 11A.
[0026]
On the upper surface of the gantry 11B, a steel column pipe 35 and a column pipe 34, each having a fixed base 45 at one end, are connected and erected via a sleeve 42, and similarly, the upper surface of the gantry 11C. The support pipe 37 having the fixed base 45 at one end and the support pipe 36 are connected via a sleeve 42 and are erected. Here, a female thread is formed on the inner peripheral surface of the sleeve 42 and is formed so as to be screwed to the outer peripheral surface of the end portion of each support pipe. Here, the length of each support pipe and the number of connected pipes are determined according to the height of the housing 110 and the like.
[0027]
L-shaped beam pipes 38 and 41 are connected to the upper end portions of the support pipes 34 and 36 via a sleeve 42, and straight beam pipes 39 and 40 are connected between the beam pipes 38 and 41. It is connected through. Further, the vertical portions of the beam pipes 38 and 41 (the vertical portions are functionally similar to the column pipes 34 to 37 and correspond to the column pipes in claim 4) and the beam pipes 39 and 40. A bracing member 46 is attached between each end portion via a coupling 47. In addition, the coupling 47 is attached to the support pipes 34 to 37 at appropriate positions, and the bracing member 46 may be attached between these coupling attachment positions and appropriate positions of the beam pipes 39 and 40. .
[0028]
Two sets of front and rear gate members (comprising post pipes 34 to 37 and beam pipes 38 to 41) assembled in this way are prepared, and front and rear are connected by a connecting frame 48 and a coupling 47 as shown in FIG. By connecting the pipes, a frame having high rigidity as a whole is formed.
It should be noted that the length and the number of connected individual beam pipes can be arbitrarily set according to the width and the number of the casings 110.
[0029]
Further, as shown in FIG. 4A, a fixed beam 43 made of a steel square pipe or a square bar is installed between the base ends of the two sets of beam pipes 38 and 41 via a coupling 44. Has been. The length of the fixed beam member 43 is determined in accordance with the distance between the support pipes 34 (35) and 36 (37), in other words, the total width of the plurality of casings 110.
The fixed beam member 43 is fixed to the upper surface of the casing 110 by bolts or the like (not shown), and a plurality of casings 110 with respect to the beam pipes 38 and 41 (indirectly, the support pipes 34 to 37). It has the effect of securely fixing.
Further, the fixed beam member 43 is connected to the beam pipes 38 to 41 by a coupling 47 and a connecting member 49 at a plurality of locations.
[0030]
According to this embodiment, the strength of the entire frame can be further increased by the brace member 46, and the fixed beam member 43 is firmly supported by the connecting member 49, and as a result, the vertical vibration of the casing 110 is suppressed. can do.
In this embodiment, the damping effect may be enhanced by using the cushioning materials 32 and 33 as shown in FIGS.
[0031]
FIG. 5 shows a fifth embodiment of the present invention. In this embodiment, instead of the connecting member 49 in the fourth embodiment, the beam pipes 39 and 40 and the fixed beam member 43 are connected by a connecting member 70 made of a rigid body provided with two arm brackets 71 extending in an oblique direction. It is a thing. It is assumed that the coupling 47 is used for fixing the connecting member 70 and the beam pipes 39 and 40, and the substrate 72 of the arm metal 71 is fixed to the fixed beam member 43 by bolting.
Although the operation of this embodiment is almost the same as that of the fourth embodiment, there is an advantage that the arm metal 71 works particularly effectively on the compression load and the tensile load in the horizontal direction and the vertical direction.
[0032]
【The invention's effect】
As described above, according to the present invention, the main structural member of the seismic frame is formed by the cylindrical pipe member, so that it is possible to reduce the weight, transport, and facilitate the installation work. It can be greatly reduced.
Moreover, there is no problem even when the optical fiber cable is introduced into the housing, and an increase in transmission loss and cable damage can be prevented in advance.
In particular, the present invention is most suitable for applications in which a relatively lightweight housing such as a rack is reliably and appropriately held and fixed at a low cost.
[Brief description of the drawings]
1A and 1B are views showing a first embodiment of the present invention, in which FIG. 1A is a front view and FIG. 1B is a side view of a main part;
FIG. 2 is a front view showing a second embodiment of the present invention.
FIG. 3 is a front view showing a third embodiment of the present invention.
4A and 4B are diagrams showing a fourth embodiment of the present invention, where FIG. 4A is a front view, and FIG. 4B is a side view.
FIG. 5 is a front view showing a fifth embodiment of the present invention.
FIG. 6 is a perspective view showing a conventional technique.
[Explanation of symbols]
11, 11A, 11B, 11C Mounting base 21, 45 Fixed base 22, 23, 34, 35, 36, 37 Support pipes 24, 25, 38, 39, 40, 41 Beam pipes 22a, 23a, 24a, 24b, 25a, 25b Flange 26, 48 Connecting frame 27, 31, 44, 47 Coupling 28, 29, 43 Fixed beam material 30 Connecting plate 32, 33 Buffer material 42 Sleeve 46 Bracing member 49 Connecting member 100, 110 Housing F Floor

Claims (4)

In the seismic frame that holds and secures the housing from around it, the housing that houses the protected equipment is installed on the pedestal.
At the four positions around the left and right sides of the front and rear of the casing, the lower ends are fixed and erected by being fixed to the gantry, and the upper ends positioned above the upper surface of the casing are curved approximately 90 ° to the left and right. A strut pipe that bends in the direction and has a flange formed at its upper end,
Flange pipes are formed at both ends, connected to the flanges of the pillar pipes on both the left and right sides, and a beam pipe constructed between the upper ends of the pillar pipes above the upper surface of the housing,
A connection frame constructed between the pillar pipes before and after the housing and between the beam pipes;
A fixed beam material fixed to the support pipe or the beam pipe and connected to the upper surface of the housing to hold the housing;
Seismic frame, characterized in that the strut pipe and beam pipe was formed by generally cylindrical pipe member. In the earthquake-resistant frame according to claim 1,
A seismic frame characterized in that a cushioning material is interposed between the fixed beam material and the upper surface of the housing. In the earthquake-resistant frame according to claim 1 or 2,
A seismic frame characterized in that a shock-absorbing material abutting against the housing is disposed on both the left and right sides of the housing group arranged in parallel. In the earthquake-resistant frame according to claim 1, 2, or 3,
A seismic frame characterized by connecting strut pipes and beam pipes with bracing members.

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