JP2004028297A - Earthquake resistant frame - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce weight, to facilitate carrying and installation without lowering rigidity, strength and solidity as an earthquake resistant frame, to lead an optical fiber cable without generating a trouble, and to securely and appropriately hold a light equipment body such as a rack. <P>SOLUTION: This earthquake resistant frame is provided with support pipes 22 and 23 stood for arrangement at four positions in the periphery of the equipment body 100 and fixed to the frame at a lower end thereof, beam pipes 24 and 25 stretched between tips of the support pipes 22 and 23 arranged in both of a right and left sides in front and rear of the equipment body 100, connecting frames 26 to be stretched between the support pipes in front and rear of the equipment body 100 and between the beam pipes, and fixing beam materials 28 and 29 fixed to the support pipes or the beam pipes to hold the equipment body 100. The support pipes 22 and 23 and the beam pipes 24 and 25 are formed from a nearly cylindrical rigid pipe material. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention provides an earthquake-resistant device for holding and fixing a housing housing a device to be protected such as various communication devices from the periphery thereof to prevent damage to the device to be protected due to collapse or movement of the housing when an earthquake occurs. It is about frames.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, various types of seismic frames of this type have been provided, and FIG. 6 is a perspective view showing one 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 is entirely formed of a steel plate. The earthquake-resistant frame 50 is installed on a double floor (duct floor, free access floor) of a building, or installed on a floor slab via a gantry (not shown).
Reference numeral 60 denotes a housing that accommodates various communication devices as a device to be protected, 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 case 60 itself is a heavy object having high strength and high rigidity, a thick and long steel plate is also used for the earthquake-resistant frame 50 that holds and fixes the case 60, and the weight is also large. Extremely heavy.
[0004]
[Problems to be solved by the invention]
As described above, the conventional earthquake-resistant frame 50 is made of a heavy material and is formed by assembling a long member, so that a large amount of labor and time are required for transportation and installation work, and the manufacturing cost is very high. Met.
In particular, when transporting each member constituting the earthquake-resistant frame 50, there is a case where it is not possible to use a transportation device such as an elevator due to dimensional restrictions, and also requires special tools and equipment for assembly and installation, There were many factors that hindered construction.
[0005]
Further, the housing 60 also includes a wiring board or the like for drawing in and connecting an optical fiber cable from the outside, and these optical fiber cables are often pulled in from the upper surface of the earthquake-resistant frame 50. In this case, the beam member 54 or the like is usually in the shape of a rectangular bar or a flat plate, and the optical fiber cable introduced along the outer surface thereof is bent beyond the allowable angle by the corner of the surface of the beam member 54, and the transmission loss is reduced. In some cases, or transmission became impossible.
[0006]
On the other hand, in recent years, various communication devices and the like are mounted in so-called 19-inch racks conforming to the EIA (American Standards Association) standard. Since this type of rack is relatively lightweight, a large-scale anti-seismic frame 50 as shown in FIG. 6 for holding these racks is an excessive facility, and is economically wasteful.
[0007]
Therefore, the present invention aims to reduce the weight, facilitate the transportation and installation work without impairing the rigidity, strength, and robustness of the earthquake-resistant frame, and furthermore, does not hinder the introduction of the optical fiber cable and the like, and has a lightweight rack. It is an object of the present invention to provide a low-cost earthquake-resistant frame capable of securely and appropriately holding a housing such as a housing.
[0008]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the invention according to claim 1 is an earthquake-resistant frame that holds and fixes a housing containing a protected device from the periphery thereof.
Between the support pipes, which are erected and arranged at four places around the housing, and whose lower end is fixed to the gantry, and between the front ends of the support pipes disposed on the left and right sides of the housing before and after the housing, respectively. A beam pipe to be erected, between the support pipes before and after the housing, and a connection frame erected between the beam pipes, and a fixed beam material fixed to the support pipe or the beam pipe and holding the housing. And the support pipe and the beam pipe are formed of a substantially cylindrical and highly rigid pipe material.
[0009]
According to a second aspect of the present invention, in the first aspect, a cushioning material is interposed between the fixed beam member and the upper surface of the housing.
[0010]
According to a third aspect of the present invention, in the above first or second aspect, a cushioning material that contacts the housing is disposed on both left and right sides of the plurality of housing groups juxtaposed.
[0011]
According to a fourth aspect of the present invention, in the first, second or third aspect, the support pipe and the beam pipe are connected by a brace member.
[0012]
BEST MODE FOR CARRYING OUT 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, in which (a) is a front view and (b) is a side view. In FIG. 1B, illustration of fixed beams 28 and 29, a connecting plate 30, a coupling 31, a housing 100, and the like described later in FIG. 1A is omitted.
The first embodiment corresponds to the first aspect of the present invention.
[0013]
In these figures, reference numeral 11 denotes a gantry fixed to the floor F, which has a plurality of housings 100 to be held and fixed by the aseismic frame of the present embodiment arranged side by side and has a fixable flat area. .
Here, the housing 100 is, for example, a 19-inch rack of the above-mentioned EIA (American Standards Association) standard, but the size, type, type, and the like of the housing 100 are not limited at all. In the housing 100, various communication devices as terminal devices to be protected, a terminal board, a wiring board, a power supply device (not shown), and the like are mounted.
[0014]
At the four corners of the upper surface of the gantry 11, cylindrical pillar pipes 22, 22, 23, and 23 made of steel are erected via a fixed base 21 bolted to the gantry 11. In FIG. 1 (a), reference numerals 22 and 23 are attached to the support pipes standing upright on the left and right sides, and the support pipes standing upright behind them are also denoted by reference numerals 22 and 23. Note that the length of the support pipes 22 and 23 is determined according to the height of the housing 100.
[0015]
The upper ends of the support pipes 22 and 23 are curved at substantially 90 degrees, and flanges 22a and 23a are formed at these ends.
Reference numerals 24 and 25 denote steel cylindrical beam pipes having flanges 24a, 24b, 25a and 25b formed at both ends thereof. These beam pipes 24 and 25 bolt the flanges 24b and 25a to each other. And the other flanges 24a, 25b are bolted to the flanges 22a, 23a of the support pipes 22, 23 and connected to the support pipes 22, 23, respectively.
1A, reference numerals 24 and 25 are attached to beam pipes erected on the left and right sides in the front, respectively, and beam pipes erected behind these are also denoted by reference numerals 24 and 25. It is assumed that
[0016]
The two sets of portal members (each consisting of support pipes 22 and 23 and beam pipes 24 and 25) assembled in this manner are moved forward and backward by a connecting frame 26 and a coupling 27 as shown in FIG. Are connected to each other, the beam pipes 24, 24, and the beam pipes 25, 25 are connected to each other to form a frame having high rigidity as a whole.
Here, the length and the number of connected individual beam pipes can be arbitrarily set according to the width and the number of housings 100.
[0017]
Further, as shown in FIG. 1 (a), 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 are connected to the support pipes 22 and 23 by couplings 31. The length and the number of connection of the fixed beam members 28 and 29 are determined according to the interval between the support pipes 22 and 23, in other words, the total width of the plurality of casings 100.
The fixing beams 28 and 29 are fixed to the upper surface of the housing 100 by bolts or the like (not shown), and function to securely fix the plurality of housings 100 to the support pipes 22 and 23. I have.
[0018]
According to the seismic frame of the present embodiment configured as described above, the main constituent members, ie, the support pipes 22 and 23, the beam pipes 24 and 25, and the like are formed by cylindrical pipes, and thus are shown in FIG. It is possible to significantly reduce the weight compared to such a conventional earthquake-resistant frame. In addition, each member is disassembled and transported to the installation location, and the connection and fixing of the members including the fixing beams 28 and 29 can be realized only by fastening bolts or the like, so that a large-scale foundation work or a special The entire assembly and fixing work 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, but in the present embodiment, the entirety can be assembled without welding work.
[0019]
After the plurality of casings 100 are fixed by the fixing beams 28 and 29, the forces applied to the casing 100 in the front-rear and left-right directions are fixed to the four columns 22, 22, 23, via the fixing beams 28 and 29. Thus, the casing 100 is securely transmitted to the casing 23 and can be securely held. Therefore, it is possible to reliably protect the device to be protected inside the housing 100.
[0020]
Further, when an optical fiber cable is introduced into the casing 100, if the optical fiber cable is drawn in along the outer peripheral surfaces of the beam pipes 24 and 25, there is no possibility that the cable is bent beyond an allowable angle, and the transmission loss is reduced. There is no need to worry about breakage or fiber breakage. In this case, the connection frame 26 for connecting the front and rear beam pipes 24, 24 or 25, 25 to each other 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. 1 are denoted by the same reference numerals, and description thereof will be omitted. Hereinafter, different portions will be mainly described. The second embodiment corresponds to the second aspect of the present invention.
In the second embodiment, the fixed beams 28 and 29 and the respective housings 100 are not directly connected to each other, but a buffer 32 made of hard rubber or the like is interposed between the two. The cushioning member 32 is connected and fixed to the fixed beam members 28 and 29 and the housing 100 by forming bolts or female threads at both ends in the axial direction 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 member 32, a further vibration damping effect can be obtained. Further, it is also possible to prevent generation of abnormal noise at the time of vibration when the fixed beams 28 and 29 come into direct contact with the housing 100 and prevent the housing 100 from being damaged.
Note that the material of the cushioning member 32 is not limited to rubber, and for example, a damper in which air or a gel-like substance is sealed may be used.
[0023]
FIG. 3 shows a third embodiment of the present invention. In the present embodiment, a plurality of housings 100 (housing groups) are provided with cushioning members 33 on the upper left and right sides thereof, which corresponds to the third aspect of the present invention. These cushioning members 33 are formed, for example, by sticking hard rubber or the like to one surface of a steel substrate, fixing the substrate to one end of each of the fixed beam members 28 and 29, and providing a plurality of hard rubber sides. Are arranged in contact with the upper portions of both ends of the housing 100.
In this embodiment, the fixed beams 28 and 29 are fixed to the upper surface of the housing 100 by bolts and the like, as in the first embodiment.
The buffer material 33 may be formed by a damper in which air or a gel-like substance is sealed as described above.
[0024]
According to the present embodiment, the left and right vibrations can be particularly damped by the damper 33. Further, in addition to the cushioning material 33, the cushioning 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 mounts, respectively, and these may be integrally formed. A plurality of housings 110 to be held are juxtaposed and fixed on the gantry 11A.
[0026]
On a top surface of the gantry 11B, a steel cylindrical support pipe 35 and a support pipe 34 each having a fixed base 45 at one end are connected via a sleeve 42 and are erected. A support pipe 37 having a fixed base 45 at one end and a support pipe 36 are connected via a sleeve 42 and are erected. Here, an internal thread is formed on the inner peripheral surface of the sleeve 42, and is formed so as to be able to be screwed to the outer peripheral surface at the end of each support pipe. Here, the length and the number of the connecting 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 upper ends of the support pipes 34 and 36 via a sleeve 42, and linear beam pipes 39 and 40 are provided between the beam pipes 38 and 41. Are connected via The vertical portions of the beam pipes 38 and 41 (the vertical portions are functionally similar to the post pipes 34 to 37 and correspond to the post pipes in claim 4) and the beam pipes 39 and 40. Brace members 46 are attached to the respective ends via couplings 47. Couplings 47 are attached to the support pipes 34 to 37 at appropriate positions, and a brace member 46 may be attached between these coupling installation positions and appropriate positions of the beam pipes 39 and 40. .
[0028]
Two sets of front and rear gate-shaped members (consisting of support pipes 34 to 37 and beam pipes 38 to 41) assembled in this way are prepared, and as shown in FIG. By connecting the pipes to each other, a frame having high rigidity as a whole is formed.
The length and the number of connected beam pipes can be arbitrarily set according to the width and the number of the housings 110.
[0029]
Further, as shown in FIG. 4 (a), a fixed beam member 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. Have been. The length of the fixed beam member 43 is determined according to the distance between the support pipes 34 (35) and 36 (37), in other words, the total width of the plurality of housings 110. The fixed beam 43 is fixed to the upper surface of the housing 110 by bolts or the like (not shown), and a plurality of housings 110 are connected to the beam pipes 38 and 41 (indirectly to the support pipes 34 to 37). Has the effect of securely fixing the
Further, the fixed beam member 43 is connected to the beam pipes 38 to 41 at a plurality of locations by a coupling 47 and a connecting member 49.
[0030]
According to this embodiment, the strength of the entire frame can be further increased by the brace members 46, and the fixed beam members 43 are firmly supported by the connecting members 49, and as a result, vertical vibration of the housing 110 is suppressed. can do.
Note that, also in the present 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 having two arm bars 71 extending in an oblique direction. It was done. The coupling 47 is used to fix the connecting member 70 to the beam pipes 39 and 40, and the substrate 72 of the arm member 71 is fixed to the fixing beam 43 by bolting.
The operation of this embodiment is almost the same as that of the fourth embodiment, but has an advantage that the arm 71 works effectively against the compressive 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, since the main constituent members of the earthquake-resistant frame are formed of cylindrical pipe members, weight reduction and transportation, installation work can be facilitated, and manufacturing costs and construction costs are reduced as compared with the conventional case. It can be greatly reduced.
In addition, there is no problem in introducing the optical fiber cable into the housing, and it is possible to prevent an increase in transmission loss and damage to the cable.
In particular, the present invention is most suitable for use in securely and appropriately holding and fixing a relatively lightweight enclosure such as a rack at low cost.
[Brief description of the drawings]
FIG. 1 is a view showing a first embodiment of the present invention, wherein (a) is a front view and (b) 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.
FIG. 4 is a view showing a fourth embodiment of the present invention, wherein (a) is a front view and (b) 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 Stands 21, 45 Fixed bases 22, 23, 34, 35, 36, 37 Support pipes 24, 25, 38, 39, 40, 41 Beam pipes 22a, 23a, 24a, 24b, 25a, 25b Flanges 26, 48 Connection frames 27, 31, 44, 47 Couplings 28, 29, 43 Fixed beam members 30 Connection plates 32, 33 Buffer materials 42 Sleeves 46 Brace members 49 Connection members 100, 110 Housing F Floor surface

Claims (4)

In an earthquake-resistant frame that holds and fixes the housing containing the protected equipment from around
A support pipe that is erected and arranged at four places around the housing, and whose lower end is fixed to a gantry;
Beam pipes to be installed between the front ends of the support pipes arranged on the left and right sides of the housing before and after the housing,
Between the support pipes before and after the housing, and a connection frame erected between the beam pipes,
A fixed beam material fixed to the support pipe or the beam pipe to hold the housing,
An earthquake-resistant frame, wherein the support pipe and the beam pipe are formed of a substantially cylindrical, high-rigidity pipe material. The earthquake-resistant frame according to claim 1,
An anti-seismic frame characterized by interposing a cushioning material between a fixed beam member and an upper surface of a housing. The earthquake-resistant frame according to claim 1 or 2,
An anti-seismic frame comprising a plurality of juxtaposed housing groups, on both left and right sides of which a cushioning material is provided for contacting the housing. The earthquake-resistant frame according to claim 1, 2, or 3,
A quake-resistant frame, wherein a support pipe and a beam pipe are connected by a brace member.

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