JP3533824B2 - Earthquake-resistant box for power supply unit - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic-resistant box for a power supply device that houses a power supply device for charging or the like.

[0002]

2. Description of the Related Art A power supply box used in a nuclear power plant or the like is required to have a predetermined earthquake resistance.

A conventional seismic resistant box 1 for a power supply device which can satisfy such seismic resistance has a structure shown in FIG.

The seismic-resistant box body 1 for a power supply device comprises a box-shaped frame 2 and a ceiling plate 3, a bottom plate 4, and left and right side plates 5 attached to the box-shaped frame 2.

In the box-shaped frame 2, right and left side frame bodies 7 in which a rectangular frame is reinforced with a lattice-shaped reinforcement body 6 are arranged opposite to each other at predetermined intervals, and upper and lower portions of the left and right side frame bodies 7 are arranged. A plurality of connecting arms 8 and 9 are connected to each other, and a reinforcing plate 10 for partitioning the front and rear is attached between the left and right side frame bodies 7. In this case, the lattice-shaped reinforcing member 6, the side frame members 7, and the connecting arms 8 and 9 are formed of L-shaped or groove-shaped steel or a sheet metal bent into an L-shaped or grooved shape. These box-shaped frames 2 are constructed by welding constituent members.

In such a box-shaped frame 2, a ceiling plate 3 is fixed to its upper surface, a bottom plate 4 is fixed to its bottom surface, and side plates 5 are fixed to its left and right side surfaces, respectively. The ceiling plate 3, the bottom plate 4, and the side plate 5 are fixed to the box-shaped frame 2 by welding.

A seismic resistant box 1 for a power supply device having such a structure
Finally, the inner and outer surfaces are painted.

[0008]

However, the box-shaped frame 2 of the conventional seismic-resistant box body 1 for a power supply device having the above-described structure is reinforced by the lattice-shaped reinforcing body 6 in order to have seismic resistance. Therefore, the number of welding spots is very large,
There is a problem that the number of assembling steps is increased and the cost is increased, the weight of the box-shaped frame 2 is increased, and it is difficult to transport the box 1.

When the box body 1 is large and heavy, it is difficult to move the box body 1 and it is difficult to carry out the painting work.

The object of the present invention is to provide a seismic resistant structure,
An object of the present invention is to provide a seismic resistant box for a power supply device which can reduce the weight and the number of welding points.

The object of the present invention is to provide a seismic structure,
An object of the present invention is to provide a seismic-resistant box body for a power supply device which is light in weight, can reduce the number of welding points, and is easy to handle even if it is made large.

[0012]

According to a first aspect of the present invention, there is provided a seismic-resistant box body for a power supply device in which an upper frame body and a lower frame body each having a quadrangular shape are opposed to each other at a predetermined interval. The left and right side portions of the frame body are connected to each other by a plurality of vertically oriented columns, and the back portions of the upper frame body and the lower frame body are connected to each other by X-shaped braces to form a box-shaped frame. The ceiling plate is fixed to the upper frame body, the bottom plate is fixed to the lower frame body, and the left and right side surfaces of the box-shaped frame are U-shaped by bending both sides in the width direction to the back side. It is characterized in that the side plate main body provided with the reinforcing portion and the reinforcing side plate consisting of the Z-shaped braces fixed to the back surface of the side plate main body between these U-shaped reinforcing portions are fixed.

In the present invention, the Z-shaped braces include not only literal Z-shaped braces but also inverted shapes (S-shaped) (Z-shaped when viewed from the opposite side).

The box-shaped frame of the seismic-resistant box body for the power supply device having such a structure is provided with only X-shaped braces on the back as a reinforcing member, which can reduce the weight and reduce the number of welding points. You can

Further, on the left and right side surfaces of the box-shaped frame, the side plate main body provided with U-shaped reinforcing portions by bending both side portions in the width direction to the back side in a U-shape, and between these U-shaped reinforcing portions. Since the reinforcing side plates made of Z-shaped braces fixed to the back surface of the side plate body are fixed, the left and right sides of the box-shaped frame can be reinforced by the reinforcing side plates.

Particularly, since the reinforcing structure of the reinforcing side plate is a combination structure of the U-shaped reinforcing portion of the side plate body and the Z-shaped braces, sufficient strength can be obtained even with a simple structure, and the number of welding points is small. Weight gain can also be minimized.

In addition, since the seismic resistant box for a power supply device having such a structure is reinforced by using X-shaped braces and Z-shaped braces, a conventional reinforcing plate for partitioning the inside of the box-shaped frame is not required. Therefore, the power supply device can be easily incorporated in the box-shaped frame.

According to a second aspect of the present invention, there is provided a seismic resistant box for a power supply device characterized in that a lateral braces are fixed in the middle of the X-shaped braces.

By fixing the horizontal braces in the middle of the X-shaped braces in this manner, it is possible to prevent deformation such as dents and bulges on the side portions of the box-shaped frame, and therefore the lateral seismic strength of the box-shaped frame. Can be improved.

The seismic resistant box for a power supply according to claim 3 is formed by connecting a plurality of unit boxes adjacent to each other,
Each unit box body, the upper frame body and the lower frame body each having a quadrangle are arranged to face each other at a predetermined interval, and the side portions of the upper frame body and the lower frame body are mutually connected by a plurality of vertically oriented columns, The backs of the upper and lower frames are connected to each other with X-shaped braces to form a box-shaped frame. The ceiling plate is fixed to the upper frame of the box-shaped frame and the bottom plate is fixed to the lower frame. The left and right side surfaces of the box-shaped frame are provided with U-shaped reinforcing portions by bending both side portions in the width direction on the back side in a U shape, and the side plate between these U-shaped reinforcing portions. It is characterized in that it has a seismic structure in which reinforcing side plates made of Z-shaped braces fixed to the back surface of the main body are fixed.

If the seismic resistant box for the power supply is constructed by connecting a plurality of unit boxes side by side in this way, each unit box is lightweight, and therefore the unit boxes can be moved during painting. It can be easily painted and can be easily transported and installed. Moreover, if a plurality of unit boxes are combined and connected to form a seismic-resistant box for a power supply device, an arbitrary volume can be easily formed by increasing or decreasing the number of unit boxes to be combined.

In this case, the box-shaped frame of the unit box is only provided with the X-shaped braces on the back as a reinforcing member, and therefore the weight can be reduced and the number of welding points can be reduced.

Further, on the left and right side surfaces of the box-shaped frame, the side plate main body provided with U-shaped reinforcing portions by bending both side portions in the width direction to the back side in a U shape, and between these U-shaped reinforcing portions. Since the reinforcing side plates made of Z-shaped braces fixed to the back surface of the side plate body are fixed, the left and right sides of the box-shaped frame can be reinforced by the reinforcing side plates.

Particularly, since the reinforcing structure of the reinforcing side plate is a combined structure of the U-shaped reinforcing portion of the side plate body and the Z-shaped braces, sufficient strength can be obtained even with a simple structure, and the number of welding points is small. Weight gain can also be minimized.

Moreover, in the unit box having such a structure, X
Since it is reinforced by using the shape braces and the Z-shaped braces, there is no need for a reinforcing plate for partitioning the inside of the box-shaped frame as in the conventional case. Therefore, the power supply device can be easily incorporated into the box-shaped frame. be able to.

The unit boxes that are adjacent to each other in the front and rear of the seismic resistant box for a power supply according to claim 4 have their X-shaped braces faced to each other, and these X-shaped braces are connected to each other. To do.

When the unit boxes which are adjacent to each other in the front and rear are arranged with their X-shaped braces facing each other,
The structure is open at the front and back, and the power supply device can be installed without any trouble. In addition, the front and rear wiring can be performed without any trouble by utilizing the gap between the X-shaped braces that face each other.

In each of the unit boxes that are adjacent to each other in the right and left sides of the seismic-resistant box for a power supply unit according to claim 5, windows are provided corresponding to adjacent reinforcing side plates while avoiding Z-shaped braces. Is characterized by.

In this way, in the unit boxes that are adjacent to each other on the left and right sides, if windows are provided correspondingly on adjacent reinforcing side plates while avoiding Z-shaped braces, the wiring between the unit boxes that are adjacent to each other on the left and right is not hindered. It can be carried out.

[0030]

1 to 3 show a first example of an embodiment of a seismic resistant box 1 for a power supply device according to the present invention.

In the seismic-resistant box body 1 for a power supply device of this example, an upper frame body 11 and a lower frame body 12 each having a quadrangular shape are opposed to each other at a predetermined interval, and the upper frame body 11 and the lower frame body 1 are arranged.
The left and right side portions of 2 are connected to each other by two vertically oriented columns 13, and the back portions of these upper frame body 11 and lower frame body 12 are connected to each other by X-shaped braces 14 to form a box-shaped frame 2 Is configured. The X-shaped brace 14 is configured by arranging four arms 15 in an X-shape and connecting the centers with a mounting plate 16. The four arms 15 and the mounting plate 16 can be connected by bolting, welding, riveting, or the like. A lateral brace 17 is fixed to a mounting plate 16 in the middle of the X-shaped brace 14 by bolting, welding, riveting or the like. Each arm 15 of the X-shaped brace 14
The front end of is fixed to the mounting plate 18 of the upper frame 11 and the lower frame 12 by bolting, welding, riveting, or the like. In this case, the upper frame body 11, the lower frame body 12, the column 13, the arm 15 of the X-shaped braces 14, and the lateral braces 17 are L-shaped or groove-shaped steel bars, or sheet metal bent into L-shaped or grooved shapes. Has been formed.

A ceiling plate 3 is fixed to the upper frame 11 of the box-shaped frame 2 and a bottom plate 4 is fixed to the lower frame 12.

On the left and right side surfaces of the box-shaped frame 2, side plate bodies 19 provided with U-shaped reinforcing portions 19a by bending both side portions in the width direction to the back side, and the U-shaped reinforcing portions 1 are provided.
Reinforcing side plates 21 composed of Z-shaped braces 20 fixed to the back surface of the side plate body 19 are fixed between the portions 9a. The Z-shaped brace 20 is composed of upper and lower lateral arms 22 and an oblique arm 23 that obliquely connects the lateral arms 22. The horizontal arm 22 and the diagonal arm 23 are connected to each other by butting and welding as shown in FIG. Further, the horizontal arm 22 and the diagonal arm 23 are respectively provided with U-shaped arm bodies 22a, 2
Flange portions 22b, 23 in a direction orthogonal to the opening side of 3a.
b is provided, and each flange portion 22
b and 23b are applied to the back surface of the side plate body 19 and fixed to the side plate body 19 by welding. The U-shaped reinforcing portion 19a of the side plate body 19 is provided on the center side of the side plate body 19 which is closer to the center by the dimension L from the upper and lower sides. The upper and lower lateral arms 22 of the Z-shaped braces 20 are provided so as to correspond to the upper and lower ends of the U-shaped reinforcing portion 19a as shown in FIG.

The reinforcing side plates 21 are fixed to the left and right side surfaces of the box-shaped frame 2 by applying the upper and lower flat portions 19b of the side plate body 19 to the side surfaces of the upper frame body 11 and the lower frame body 12 and the reinforcing side plate 21 and the box. This is done by welding the mutual contact portions with the shaped frame 2.

A door (not shown) is openably and closably attached to the front opening of the seismic resistant box 1 for a power supply device. A power supply device is incorporated inside the seismic resistant box 1 for a power supply device. At this time, each pillar 13 is also used as an electric component mounting member.

Earthquake-resistant box body 1 for power supply device having such a structure
The box-shaped frame 2 is an X-shaped bracing 1 on the back as a reinforcement.
Since only 4 is provided, the weight can be reduced and the number of welding points can be reduced.

On the left and right side surfaces of the box-shaped frame 2,
Both side portions in the width direction are each bent to the back side in a U shape to provide a side plate main body 19 provided with a U-shaped reinforcement portion 19a, and a Z fixed to the back surface of the side plate body 19 between the U-shaped reinforcement portions 19a.
Since the reinforcing side plates 21 including the braces 20 are fixed, the left and right reinforcement of the box-shaped frame 2 can be achieved by the reinforcing side plates 21.

In particular, since the reinforcing structure of the reinforcing side plate 21 is a combination structure of the U-shaped reinforcing portion 19a of the side plate body 19 and the Z-shaped braces 20, sufficient strength can be obtained even though it is a simple structure, The number is small and the increase in weight can be minimized.

In addition, since the seismic resistant box 1 for a power supply device having such a structure is reinforced by using the X-shaped braces 14 and the Z-shaped braces 20, the conventional box-shaped frame 2 is reinforced by partitioning. Since the plate 10 is unnecessary, the power supply device can be easily incorporated in the box-shaped frame 2.

Since the lateral braces 17 are fixed in the middle of the X-shaped braces 14, the seismic strength of the box-shaped frame 2 in the lateral direction can be improved.

FIG. 4 shows a preferable example of welding of the lateral arm 22 and the diagonal arm 23 to the side plate body 19. In this example, as shown in the drawing, each flange portion 22b,
23b are provided with circular holes 24 at predetermined intervals, and these holes 24
Flanges 22b and 23b along the inner circumference of the side plate body 1
Welded to 9.

By welding in this manner, the side plate body 19
It is possible to suppress the depression of the welded portion on the surface of the. For this reason, conventionally, a large recess is formed on the surface of the side plate body 19 due to welding distortion, and a large amount of putty was required to embed the putty when filling the recess with the putty and coating it flatly. In the case of (1), the circular welding causes a force to reduce the welding distortion, the dent becomes small, and the surface can be flattened with a small amount of putty.

5 and 6 show a second example of the embodiment of the seismic resistant box 1 for a power supply device according to the present invention.

As shown in FIG. 5, the seismic resistant box 1 for a power supply device of this example is constructed so that a plurality of unit boxes 1'are connected side by side to have a required volume.

Each unit box 1'is used by forming the seismic resistant box 1 for a power supply device shown in FIG. 1 in a required size, and has a rectangular upper frame 11 and a lower frame, respectively. 12 are arranged to face each other at a predetermined interval, and the side portions of the upper frame body 12 and the lower frame body 13 are connected to each other by a plurality of vertically oriented columns 13.
The backs of the upper frame 12 and the lower frame 13 are X-shaped braces 14
The box-shaped frame 2 is configured by being connected to each other with the ceiling frame 3 fixed to the upper frame body 11 of the box-shaped frame 2 and the bottom plate 4 fixed to the lower frame body 12. On the side surface of the side plate main body 19 provided with U-shaped reinforcing portions 19a by bending both side portions in the width direction to the back side, and the back surface of the side plate main body 19 between the U-shaped reinforcing portions 19a. It has a seismic resistant structure in which the reinforcing side plates 21 composed of the Z-shaped braces 20 fixed to the respective are fixed. Windows 25 are provided correspondingly on the reinforcing side plates 21 on the left and right sides so as to avoid the Z-shaped braces 20. In addition, the unit boxes 1'adjacent to the front and the rear are the respective X-shaped braces 1
4, the X-shaped braces 14 are bolted to each other. In this case, the X-shaped braces 14 are interconnected by mounting the mounting plates 16 to each other and tightening the bolts for fixing the arms 15 to the mounting plates 16. The X-shaped braces 14 can be connected to each other by bolting the mutual mounting plates 16 at positions different from the mounting positions of the arms 15.

The front, rear, left and right unit box bodies 1'are connected by fastening bolts.

As described above, when the seismic resistant box 1 for a power supply device is constructed by connecting a plurality of unit boxes 1'adjacent to each other,
Since each unit box 1'is lightweight, it can be easily painted while moving the unit box 1 ', and can be easily transported and installed. Moreover, when a plurality of unit boxes 1 ′ are combined and connected to form a seismic resistant box 1 for a power supply device, these unit boxes 1 ′
By increasing or decreasing the number of combinations, it is possible to easily form an arbitrary volume.

In this case, the box-shaped frame 2 of the unit box 1 '
Is only provided with the X-shaped braces 14 on the back as a reinforcing member, and therefore, the weight can be reduced and the number of welding points can be reduced.

On the left and right side surfaces of the box-shaped frame 2,
Both side portions in the width direction are each bent to the back side in a U shape to provide a side plate main body 19 provided with a U-shaped reinforcement portion 19a, and a Z fixed to the back surface of the side plate body 19 between the U-shaped reinforcement portions 19a.
Since the reinforcing side plates 21 including the braces 20 are fixed, the left and right reinforcement of the box-shaped frame 2 can be achieved by the reinforcing side plates 21.

In particular, since the reinforcing structure of the reinforcing side plate 21 is a combination structure of the U-shaped reinforcing portion 19a of the side plate body 19 and the Z-shaped braces 20, sufficient strength can be obtained even though it is a simple structure, The number is small and the increase in weight can be minimized.

Moreover, in the seismic resistant box body 1 for a power supply device having such a structure, since it is reinforced by using the X-shaped braces 14 and the Z-shaped braces 20, the conventional box-shaped frame 2 is reinforced by partitioning. Since the plate 10 is unnecessary, the power supply device can be easily incorporated in the box-shaped frame 2.

Further, in this seismic-resistant box body 1 for a power supply device, since the unit box bodies 1'adjacent to each other in the front and rear are arranged with their X-shaped braces 14 facing each other, a structure in which the front and rear are opened Therefore, the power supply device can be installed without any trouble. Further, by utilizing the gap between the X-shaped braces 14 facing each other, front and rear wiring can be performed without any trouble.

In the seismic resistant box 1 for a power supply device, the unit boxes 1'adjacent to the left and right are provided with windows 25 corresponding to each other on the adjacent reinforcing side plates 21 while avoiding the Z-shaped braces 20. Therefore, the wiring between the unit boxes 1'adjacent to the left and right can be performed without any trouble.

As a guideline for the natural frequency, a technical guideline for seismic design of electronic power plants issued by the Japan Electric Association (JEAG46
01-1970. JEAG4601 / Supplement-1984). According to this guideline, the most important thing for security is to set the seismic resistant natural frequency to 20 Hz or higher. The test method is a method of hitting with a hammer.

According to this test method, the natural frequency of the seismic resistant box 1 for power supply of this example shown in FIG. 1 was measured. In this measurement, as shown in FIG. 7, the seismic resistant box 1 for a power supply device was fixed to a test base 26, and the seismic resistant box 1 for a power supply device was hit with a wooden hammer from four directions I to IV. At that time, a detector 27 for detecting vibration was attached to the surface on the side opposite to the tapping direction to detect the vibration of the seismic resistant box 1 for the power supply device. That is, when the seismic resistant box 1 for a power supply device is hit with a hammer, a voltage proportional to the acceleration is generated in the detector 27, the generated voltage is amplified by the amplifier 28, the waveform is analyzed by the analyzer 29, and X -Y
The results were output to the plotter 30 and plotted.

Six seismic-resistant box bodies 1 for the power supply device (invention product) of the structure of the present invention shown in FIG. 1 and six seismic-resistant box bodies 1 for the power supply device (conventional product) of the conventional structure shown in FIG. With 6 units,
Table 1 shows the average value of the natural frequency test results measured by hitting each with a hammer.

[0057]

[Table 1] As is clear from Table 1, according to the product of the present invention, the natural frequency was improved by 7 Hz as compared with the conventional product.

Further, according to the experiment, the product of the present invention shown in FIG. 1 is about 30 in the assembling work as compared with the conventional product shown in FIG.
%, And the weight has been reduced by about 30%.

Further, if the split type structure shown in FIG. 5 is used, the workability can be improved by the split coating work, and the weight and weight of each individual box can facilitate the transportation and installation work.

[0060]

According to the seismic-resistant box body for a power supply device of claim 1, a rectangular upper frame body and a lower frame body are arranged to face each other at a predetermined interval. The sides of are connected to each other by a plurality of vertically oriented columns, and the backs of these upper and lower frames are connected to each other with X-shaped braces to form a box-shaped frame. The box-shaped frame reinforcing body has only the X-shaped braces on the back, which makes it possible to reduce the weight and reduce the number of welding points.

Further, on the left and right side surfaces of the box-shaped frame, the side plate main body is provided with U-shaped reinforcing portions by bending both side portions in the width direction to the back side in a U shape, and between these U-shaped reinforcing portions. Since the reinforcing side plates made of Z-shaped braces fixed to the back surface of the side plate body are fixed, the left and right sides of the box-shaped frame can be reinforced by the reinforcing side plates.

In particular, since the reinforcing structure of the reinforcing side plate is a combination structure of the U-shaped reinforcing portion of the side plate body and the Z-shaped braces, sufficient strength can be obtained even with a simple structure, and the number of welding points is small. Weight gain can also be minimized.

Moreover, since the seismic resistant box for a power supply device having such a structure is reinforced by using X-shaped braces and Z-shaped braces, a conventional reinforcing plate for partitioning the inside of the box-shaped frame is not required. Therefore, the power supply device can be easily incorporated in the box-shaped frame.

In the seismic resistant box for the power supply according to the second aspect, since the lateral braces are fixed in the middle of the X-shaped braces, it is possible to prevent the side portions of the box-shaped frame from being deformed.
It is possible to improve the lateral seismic strength of the box-shaped frame.

Since the seismic resistant box for a power supply unit according to claim 3 is formed by connecting a plurality of unit boxes adjacent to each other, each unit box is lightweight, and therefore, each unit box is It can be easily painted while moving the unit box, and can be easily transported and installed. Moreover, since a plurality of unit boxes are combined and connected to form a seismic-resistant box for a power supply device, it is possible to easily form an arbitrary volume by increasing or decreasing the number of units to be combined. it can.

Further, the box-shaped frame of the unit box is only provided with the X-shaped braces on the back as a reinforcing body,
Therefore, the weight can be reduced, and the number of welding points can be reduced.

Further, on the left and right side surfaces of the box-shaped frame, both side portions in the width direction are respectively bent to the back side in a U shape to provide a U-shaped reinforcement portion, and between the U-shaped reinforcement portions. Since the reinforcing side plates made of Z-shaped braces fixed to the back surface of the side plate body are fixed, the left and right sides of the box-shaped frame can be reinforced by the reinforcing side plates.

In particular, since the reinforcing structure of the reinforcing side plate is a combination structure of the U-shaped reinforcing portion of the side plate body and the Z-shaped braces, sufficient strength can be obtained even with a simple structure, and the number of welding points is small. Weight gain can also be minimized.

Moreover, in the unit box having such a structure, X
Since it is reinforced by using the shape braces and the Z-shaped braces, there is no need for a reinforcing plate for partitioning the inside of the box-shaped frame as in the conventional case. Therefore, the power supply device can be easily incorporated into the box-shaped frame. be able to.

In the seismic resistant box for a power supply unit according to claim 4, since the unit boxes adjacent to each other in the front and rear are arranged with their X-shaped braces facing each other, the structure has an opening in the front and back. The power supply device can be installed without any trouble. In addition, the front and rear wiring can be performed without any trouble by utilizing the gap between the X-shaped braces that face each other.

Since the right and left adjacent unit boxes in the seismic resistant box for a power supply according to claim 5 are provided with windows corresponding to each other on the adjacent reinforcing side plates while avoiding Z-shaped braces, Wiring between the unit boxes adjacent to each other on the left and right can be performed without any trouble.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a first example of an embodiment of a seismic resistant box for a power supply device according to the present invention.

FIG. 2 is a perspective view of an essential part on the back surface side of the reinforcing side plate used in FIG.

FIG. 3 is a front view of a corner portion of the reinforcing side plate shown in FIG. 2 in a Z-shaped bracing.

FIG. 4 is a perspective view showing how to weld the Z-shaped braces to the side plate body of the reinforcing side plate.

FIG. 5 is a perspective view of a second example of an embodiment of a seismic resistant box for a power supply device according to the present invention.

FIG. 6 is a perspective view of a reinforcing side plate used in a second example.

FIG. 7 is a perspective view showing how to measure the natural frequency of the seismic resistant box for a power supply device.

FIG. 8 is an exploded perspective view of a conventional seismic resistant box for a power supply device.

[Explanation of symbols] 1 Seismic resistant box for power supply 1'unit box 2 box frame 3 ceiling board 4 bottom plate 5 side plates 6 Lattice type reinforcement 7 side frame 8,9 connecting arm 10 Reinforcing plate 11 Upper frame 12 Lower frame 13 pillars 14 X-shaped braces 15 arms 16 Mounting plate 17 Sideways Brace 18 Mounting plate 19 Side plate body 19a U-shaped reinforcing portion 20 Z-shaped braces 21 Reinforcement side plate 22 Side arm 23 diagonal arm 22a, 23a arm body 22b, 23b Flange part 24 holes 25 windows 26 Test Base 27 detectors 28 amplifier 29 Analyzer 30 XY plotter

Continuation of the front page (56) Reference JP-A-4-48692 (JP, A) JP-A-7-160936 (JP, A) JP-A-4-293864 (JP, A) JP-A-53-131180 (JP , A) Japanese Unexamined Patent Publication No. 1-175800 (JP, A) Actually open 50-151122 (JP, U) Actually open 2-128840 (JP, U) Special table 6-506161 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) H05K 5/02

Claims (2)

(57) [Claims] 1. An upper frame body and a lower frame body each having a quadrangular shape are arranged to face each other at a predetermined interval, and left and right side portions of the upper frame body and the lower frame body are connected to each other by a plurality of vertically oriented columns. It said top frame of the box-shaped frame in the ceiling plate is fixed to the lower frame
In a seismic-resistant box body for a power supply device with a fixed bottom plate, on the left and right side surfaces of the box-shaped frame, side plates provided with U-shaped reinforcements by bending both sides in the width direction to the back side respectively. Reinforcing side plates, which are composed of a main body and Z-shaped braces fixed to the back surface of the side plate main body between the U-shaped reinforcing portions, are fixed, respectively, and the upper frame body forming the box-shaped frame. The back of the lower frame body includes four arms and a mounting plate ,
X with four arms and the mounting plate bolted together
A seismic-resistant box for a power supply device, characterized in that they are connected to each other with a shape bracing. 2. The seismic resistant box for a power supply device according to claim 1, wherein a lateral bracing is fixed in the middle of the X-shaped bracing.