KR101730418B1 - Distributing board with Aseismatic and Vibration Isolation Structure(High-tension Panel, Low-tension Panel, Motor Control Center, Cabinet Panel) - Google Patents

Abstract

The present invention relates to a receiving and distributing board (a high-tension board, a low-tension board, a motor control board, and a cabinet board) having an aseismic and vibration-isolation structure. The vibration-isolation structure comprises: a lower frame (10) which is fixated and installed on a floor and is formed in the shape of a rectangular frame; a plurality of inclination angle adjustment units (20) which are installed in x and y axis directions on each corner portion of the lower frame (10); a plurality of bearing units (30) which allows a pair of bearings (33) to be installed at 90 to seated on the inclination angle adjustment units (20) in stalled in the x and y axis directions on each corner portion of the lower frame (10); and an upper frame (40) which is joined to the bearing units (30) and allows the receiving and distributing board (1) to be seated and installed thereon. The inclination angle adjustment unit (20) comprises: a fixation plate (21) having a cross-sectional area in the shape of ㄷ; a pair of inclined plates (22, 23) installed to be capable of angle adjustment of free ends as one end portion is joined to the fixation plate (21) by a hinge pin (P); and an angle adjustment pin (24) which is installed to be capable of location adjustment and adjusts installation angles of the inclined plates (22, 23). According to the present invention, when earthquake occurs, vibration of the earthquake is absorbed by the aseismic and vibration-isolation structure, and a level of force applied to a structure to be protected (the receiving and distributing board, the high-tension board, the low-tension board, the motor control board, and the cabinet board) is reduced. Consequently, deformation and breakage of the structure to be protected are prevented.

Description

{High-tension panel, low-tension panel, motor control center, cabinet panel} [0001] The present invention relates to a high-

More particularly, the present invention relates to a vibration-damping system for a high-pressure, low-pressure, an electric motor control panel, and a distribution board when an earthquake occurs. (High-voltage, low-voltage, motor control panel, and distribution board) that have seismic and isolation structures to prevent deformation and breakage of the switchboards (high-voltage, low-voltage, .

Generally, a collective power source such as a school, a building, an apartment complex, a factory, etc. is installed with a power transformer for receiving extra high voltage power from KEPCO and converting it into a low voltage through a transformer in order to obtain necessary power.

The water power distribution system can be divided into the water front which receives extra high voltage, the transformer which transforms the special high pressure to the low pressure, and the switchboard (or the distribution board) which distributes the low voltage to each demand source. (LBS), a power fuse (PF) which is a fuse for short-circuit protection of a special high-voltage equipment, a MOF (instrumentation transformer) which transforms an extra-high voltage to a low pressure to measure a power amount, A vacuum interrupter (VCB) or the like for interrupting the voltage is installed inside the water-front frame so as not to be disturbed by the disturbance.

This water power transformer is composed of a large transformer, a load break switch (LBS), a power fuse (PF), a meter transformer (MOF), a vacuum breaker (VCB) In consideration of safety, a sufficient space is provided between the devices in the front panel. Therefore, a wide installation space is required to install the water power supply device including the water front panel. Therefore, in consideration of safety, In the case where vibration such as an earthquake that totally flows the water-front frame is applied even if the respective components are installed apart from each other, the water and the switchboard can be largely flowed to the left and right. In this case, brackets, etc., It is deformed while being flowed together, and can not be normally fixed to the inside of the switchboard, so that disconnection or short-circuit may occur, As a result, serious damage such as power outage and fire can occur.

In order to solve such a problem, a vibration proof rubber may be installed inside a protected structure (such as a switchboard, a high-pressure pan, a low-pressure pan, an electric motor control panel, a distribution panel, etc.) There is a limit in the flow width for offsetting (absorbing), and when the anti-vibration rubber is hardened or cracked for a long period of use, the seismic performance is greatly deteriorated and it is difficult to exhibit the original designed seismic performance.

Accordingly, the present inventor has filed a patent application (registered patent No. 1642579) to solve the above-mentioned problems of the related art, and the installation structure of the water tank and the switchboard having the seismic isolation function has been registered. The installation structure of the first half and the switchboard includes a rectangular box-shaped main body in which a proper accommodating space is formed therein, a plurality of fixing brackets are provided on the bottom surface, and a first roller is installed on each of the fixing brackets; A first rail unit coupled to the first roller and slid horizontally and having a plurality of second rollers installed on the bottom surface thereof; A second rail unit installed at the lower portion of the first rail unit, coupled to the second roller, and fixed to the floor; The first and second rail units are respectively provided in the first and second rail units. The first and second rail units are respectively composed of a plurality of buffer members that absorb impact caused by the sliding motion of the first and second rail units and limit the sliding distance. A pair of right and left guide rails having guide grooves of a "C" cross-sectional shape are provided so that the first and second rollers are installed and slid on the bottom surface of the guide groove, A sloped surface formed to be sloped downward in a gentle "V" shape based on the initial position of the first and second rollers is formed so that the rail unit is returned to its center position by its own weight, The bottom surface of the main body is in contact with the upper surface of the first rail unit, and when the second roller is positioned in the middle of the tilting surface, And is supported so as to be in contact with the upper surface of one unit. By such a structure, it is possible to protect the switchboard from earthquake vibration while sliding in a horizontal direction only by a certain vibration or more caused by an earthquake, There is an advantage to be able to support.

However, the construction of the power transmission and transmission system disclosed in the above-mentioned patent document has to be formed by separately cutting or grinding the rail in order to form a gentle "V" -shaped inclined surface on the " There is a problem in that it is difficult to adjust the inclination angle of the inclined plane so as to change the degree corresponding to the earthquake vibration according to the installation environment of the object to be protected.

In addition, since the first and second rails are installed at an intersection and are installed at two levels, it is difficult to install the first and second rails in a previously installed power transmission and distribution system. .

Therefore, it is possible to easily adjust the vibration intensity to be installed and to be applied to the already installed protected structure, and it is possible to prevent the excessive increase of the center of gravity of the protected structure, (High-voltage, low-voltage, motor control panel, and distribution board) with seismic and anti-seismic structures that can be stably protected.

KR 10-1642579 B1 JP 5432058 B2 JP 2002-281616 A KR 10-1196398 B1 KR 10-0939576 B1 KR 10-1178264 B1 KR 10-1515796 B1 KR 10-2012-0105789 A KR 10-2012-0078406 A

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in order to solve the problems of the above-described conventional power transmission and distribution panels (high-voltage, low-voltage, motor control panel, and distribution board) It can be easily applied to the structure. It is constructed with one step height to prevent the center of gravity of the protected structure from rising excessively, so that the protected structure can be stably protected. An electric motor control panel, and a distribution board).

Also, even if large earthquake excursions exceed the vibration absorption limit of the seismic isolation structure, the earthquake vibration is absorbed first by the seismic isolation structure, and then the earthquake-proof structure protects the transmission / (High-pressure, low-pressure, motor control panel, distribution panel) having an earthquake-proof and an earthquake-resistant structure.

A lower frame formed in a shape of a square frame with the above-mentioned seismic isolation structure of a power transmission / A plurality of inclination angle adjusting units provided in the x and y axis directions respectively at corner portions of the lower frame; A plurality of bearing units each having a pair of bearings arranged at 90 degrees so as to be seated on an inclination angle adjusting unit provided in a corner portion of the lower frame in the x and y axis directions; And an upper frame in which a plurality of bearing units are coupled and a transmission / reception panel is seated thereon, the inclination angle adjusting units each comprising: a fixed plate having a " C " A pair of swash plates coupled to the fixing plate by hinge pins at one end thereof so as to adjust the angle of the free ends; And a pair of swash plates, each of which has a horizontal or gentle "V" shape in accordance with the installation position of the angle adjusting pin and the mounting position, The bearing unit is displaced along the inclined plane only by a predetermined vibration or more, and then the plurality of bearing units are returned to their original positions by the self weight of the transmission / reception section.

According to another aspect of the present invention, there is provided a fixing plate, comprising: a fixing plate having a plurality of pin engagement holes inserted at both ends of the fixing plate at predetermined intervals along a length thereof, The angle of inclination of the swash plate is adjusted.

The present invention is further characterized in that a fixing shaft is provided at each corner of the lower frame, a bearing plate is provided with a connecting plate, and a spring is installed diagonally to connect the connecting plate and the fixing shaft.

The present invention is further characterized in that the bearing of the bearing unit is a spherical roller bearing which is angularly adjusted within a certain range with respect to the rotation axis.

In addition, the present invention is further characterized in that a damper is provided at one side of the inclination angle adjusting unit to limit the movement of the bearing and to absorb the impact.

The present invention also relates to an earthquake-resistant structure, comprising: an upper and lower earthquake-resistant frame installed at a predetermined distance from an inner surface and a lower surface of a switchboard; A pair of side seismic frames spaced apart from each other at a predetermined interval on both sides of the interior of the switchgear; And an earthquake-proof connecting portion which is assembled by connecting corner portions of the upper and lower side inner and lower seismic frames and corner portions of the pair of side seismic frames to each other.

According to the present invention, the tilt angle adjusting unit of the seamed structure can be installed so as to be capable of absorbing small vibrations according to the field conditions or installation requirements of the object to be protected (switchgear, high pressure, low pressure, motor control panel, Even if a large vibration deviating from the seismic limit of the seismic structure is applied, the impact acting on the structure to be protected is relatively reduced by the spring and the damper, so that the seismic protection performance There is synergy effect that also improves.

Further, according to the present invention, since a gentle "V" -shaped path is formed by the inclination angle adjusting unit, it is subjected to seismic displacement corresponding to the seismic vibration, and then the relative low point Part), and the initial installation state is maintained.

1 is a perspective view showing an example of a switchboard having an earthquake-proof and an earthquake-resistant structure according to the present invention,
2 is a perspective view showing an example of a base structure according to the present invention,
FIG. 3 is an exploded perspective view of FIG. 2,
Fig. 4 is a plan view of Fig. 2,
FIG. 5 is a perspective view showing an example of the inclination angle adjusting unit of the present invention,
Fig. 6 is an exploded perspective view of Fig. 5,
Figs. 7 (a), (b) and (c) are explanatory diagrams showing an example of use of the inclination angle adjusting unit,
8 is a perspective view showing an example of a bearing unit among the seam structures according to the present invention,
FIG. 9 is an explanatory view showing an example in which an installation angle of a bearing installed in a bearing unit is adjusted among the above-
FIG. 10 is a sectional view showing an example of a grounded structure according to the present invention,
11 is an explanatory view showing an example in which x-axis or y-axis vibration acts on a seam structure according to the present invention,
12 is an explanatory view showing an example in which an xy axis vibration acts on a seismic isolation structure according to the present invention,
13 is a side view showing an example of a seismic resistant structure according to the present invention,
14 is a side view showing an example in which a seismic isolation structure and a seismic isolation structure according to the present invention are applied to a high-
15 is a side view showing an example in which a seismic isolation structure and a seismic isolation structure according to the present invention are applied to a low-
16 is a side view showing an example in which the vibration isolation structure according to the present invention is applied to a motor control panel,
17 is a front view showing an example in which the base isolation structure according to the present invention is applied to a distribution board.

Hereinafter, the structure and operation of the present invention will be described in more detail with reference to the accompanying drawings showing preferred embodiments.

The present invention can be applied to an already-installed protected structure that can be installed by appropriately adjusting the vibration intensity to be moved by an unseasoned movement, and it is manufactured with a single height to prevent the center of gravity of the protected structure from being excessively raised, (High-voltage, low-voltage, motor control panel, and distribution board) having an earthquake-proof and seismic structure capable of stably protecting a structure. The present invention is largely divided into a seismic isolation structure 5 and an earthquake- The seismic isolation structure 5 comprises the lower frame 10, the inclination angle adjustment unit 20, the bearing unit 30 and the upper frame 40 as shown in Figs. 1 to 3, The upper and lower seismic frames 50 and 60, the side seismic frame 70 and the earthquake-proof connector 80 as shown in the drawings. Hereinafter, the seismic isolation structure 5 and the earthquake- Will be described in detail.

1, the longitudinal direction of the structure to be protected is referred to as' y-axis direction ', the longitudinal direction thereof as' x-axis direction', the diagonal direction of the x-axis and y-axis as' xy axis '.

1. Isolation structures (5)

The base frame 10 according to the present invention comprises a lower frame 10, a tilt angle adjusting unit 20, a bearing unit 30 and an upper frame 40 as described above. (Or sections) having a "C" cross-sectional shape are installed on the floor as shown in FIG. 2 and FIG. 3, and are installed in the x-axis and y- .

One end of a spring S is connected to the fixed shaft 11 and the other end of the spring S is connected to a bearing unit 30 .

Further, a mounting plate (not shown) provided with a plurality of coupling holes (not shown) is provided on the outer side of the lower frame 10, and is firmly fixed to the floor of a concrete structure or the like using an anchor bolt or the like .

The tilt angle adjusting unit 20 is provided at each corner of the lower frame 10 in the x and y axis directions. When the tilt angle adjusting unit 20 does not operate the earthquake vibration, for example, The structural condition of the structure to be protected is maintained and the structural safety is assured.

The inclination angle adjusting unit 20 is installed at a predetermined interval in a channel installed in the x and y axis directions of the lower frame 10. The inclination angle adjusting unit 20 includes a lower frame 10, By bolts, welding or the like so as not to move separately during seismic vibration due to seismic vibrations.

5 and 6, the inclination angle adjusting unit 20 includes a fixed plate 21 having a "C" shape whose top is opened in cross-section, a hinge portion 25 formed at the center portion of the fixed plate 21, A pair of swash plates 22 and 23 having one end connected by a hinge pin P coupled to the pin coupling hole 21A and the other end of which is adjustably arranged and a fixed plate 21, And an angle adjusting pin 24 for adjusting the installation angle of the pair of swash plates 22 and 23. [

At this time, as shown in FIG. 6, a plurality of pin coupling holes 21B through which the angle adjusting pins 24 are inserted are formed at both ends of the fixing plate 21 at predetermined intervals along the length, The inclination angles of the pair of swash plates 22 and 23 are appropriately adjusted as shown in Figs. 7 (a), (b) and (c)

As the angle adjusting pin 24 is inserted into the pin fitting hole 21B at a position relatively far from the hinge pin fitting hole 21A of the fixing plate 21 by the above-described structure, the pair of swash plates 22, 23 The inclination of the pair of inclined plates 22 and 23 is gradually reduced as the angle adjusting pin 24 is inserted into the pin engaging hole 21B located near the hinge pin fitting hole 21A, When the angle adjusting pin 24 is removed, the pair of swash plates 22 and 23 are installed in parallel.

The strength of the force by which the bearing unit 30 can be slid by the earthquake vibration is determined by the inclination of the inclined plates 22 and 23 by the inclination angle adjusting unit 20, The inclination degree is set to be small so that a small vibration can be absorbed or the inclination degree is set to be large so as to absorb only a large vibration.

That is, according to the present invention, in order to perform an anti-sliding motion by the seismic isolation structure 5 even in a small vibration (life vibration) generated during the maintenance work of the object to be protected, the inclination plates 22, In order to make the slope plates 22 and 23 be in a " V "-shaped shape in order to perform an anti-sliding sliding operation only on vibrations Or steep slope so that it can be adjusted easily according to installation requirements.

A damper D is provided at one side of the inclination angle adjusting unit 20 to adjust the spring force of the spring by a spring while the lower frame 10 is moved by seismic vibration The bearing unit 30 to be described later does not separate from the inclined plates 22 and 23 of the inclination angle adjusting unit 20 even when a large displacement occurs and the impact between the structures generated when the maximum displacement is reached is absorbed The control panel 4 and the distribution panel), and as a result, the present invention can be applied to an object to be protected (hereinafter, referred to as " And the shock absorption by the damper (D) and the spring (S) -> the shock protection by the earthquake-proof structure, the deformation and breakage of the protection target structure can be effectively prevented.

The four bearing units 30, which are seated on the inclination angle adjusting unit 20 provided in the x and y axis directions on the corner of the lower frame 10 and are displaced by seismic vibration, A pair of fixed shafts 32 provided at 90 degrees to the mounting plate 31 and a pair of fixed shafts 32 provided to the pair of fixed shafts 32, And a pair of bearings 33 provided at 90 ° to the pair of inclination angle adjusting units 20 provided in the x and y axis directions respectively at the corner portions of the lower frame 10 at the same time Lt; / RTI >

A connecting plate 34 having a predetermined length is provided in the bearing unit 30 in a direction corresponding to the position of the fixing shaft 11 of the lower frame 10 and the connecting plate 34 and the fixing shaft 11 The spring S is installed to connect the bearing unit 30, so that the bearing unit 30 is displaced by seismic vibration and then returned to its original position.

Even if the inclination angles of the pair of swash plates 22 and 23 of the inclination angle adjusting unit 20 are set gently, the bearing 33 can be quickly returned to the originally installed position by the elastic force acting on the spring S. have.

9, the bearing 33 of the bearing unit 30 is moved counterclockwise corresponding to the vibration, and the position (angle) of the shaft is changed, Spherical roller bearings are used so that the bearing 33 maintains surface contact along the inclined plates 22 and 23 even if it is not only in the x-axis or y-axis direction but also in the xy axis direction A suitable cloudiness may be ensured in the case of the present invention.

In order to prevent the bearing unit 30 from being detached from the lower frame 10, as shown in FIG. 10, a departure-preventing bag 35 having a "C"

The lower frame 10 is installed on each of the pair of fixed shafts 32 by the structure of the bearing unit 30 as described above so that the bearing unit 30 can be moved in an appropriate range by seismic vibration, Is prevented.

The mounting plate 31 having the "A" -shaped sectional shape of each of the four bearing units 30 is joined or welded to the corner portion, respectively, and the upper surface is provided with the protection target structures (the switchboard 1, the high- 3, the upper frame 40 is mounted on the lower frame 3, the motor control panel 4, and the distribution panel. The upper frame 40 is composed of four frames as shown in FIG. 3. A plurality of bolts A hole (not shown) is formed.

As described above, when the seismic vibration is applied in the x, y, and xy directions as shown in Figs. 11 to 12, the position of the upper frame 40 is stably fixed The lower frame 10 is slidably moved in response to the earthquake vibration in order to absorb the vibration so that the earthquake vibration is prevented from being directly transmitted to the protection target structure seated on the upper surface of the upper frame 40 The bearing 33 provided in the direction corresponding to the direction in which the vibration acts, out of the two bearings 33 installed at 90 degrees when the bearing is displaced only in the x- or y-axis direction, The bearing 33 provided at a position orthogonal to the direction in which the vibration acts acts to move the bearing 33 of the fixed shaft 32 along the inclined plates 22 and 23 of the inclination angle adjusting unit 20. [The bearings 33 that roll along the swash plates 22 and 23 move along the inclination of the swash plates 22 and 23 so that the bearing unit 30 So that the height of the bearing 33 provided on the opposite fixed shaft 32 also increases together with the height of the bearing 33. As a result, even if the seismic vibration acts in either one of the x- or y-axis directions, The bearing 33 provided on the fixed shaft 32 in the direction is easily displaced from the inclined plates 22 and 23 by a predetermined distance in accordance with the earthquake vibration direction

14, the low-voltage panel 3 shown in Fig. 15, the motor control panel 4 shown in Fig. 16, and the distribution panel 4 'shown in Fig. 17, ). Hereinafter, the earthquake-resistant structure applied to the structure to be protected will be described.

2. Earthquake-proof structures

The earthquake-proof structure according to the present invention is intended to prevent a structure to be protected (a switchboard, a high-pressure panel, a low-pressure panel, an electric motor control panel, and a distribution panel) from being deformed and damaged by earthquake vibration. Upper and lower seismic frames 50 and 60 installed at a predetermined distance from the lower and upper surfaces of the main body 1 and a pair of side seismic frames 70 ) And the corner portions of the upper and lower seismic frame (50, 60) and the pair of side seismic frame (70) are connected to each other, And an earthquake-proof connector (80).

A plurality of horizontal reinforcement frames 71 and a vertical reinforcement frame 72 are provided in the side seismic frame 70. Even if a large external force is applied by this structure, the switchgear 1 is not easily deformed or damaged, The device installed in the apparatus is safely protected.

Even if a large external force acts on the upper and lower sides and left and right sides of the switchboard 1 by the above structure, the upper and lower seismic frame 50 and 60 and the side seismic frame 70 are firmly supported by the upper and lower seismic frame 70, The outer frame (not shown) of the switchgear 1 and the corner portions of the upper and lower seismic frames 50 and 60 and the side seismic frame 70 are assembled to each other by the earthquake- So that the structural bonding strength of the switchgear 1 is improved as a whole, thereby preventing deformation and breakage.

At this time, a door or a control panel or the like is provided on the front side of the switchboard 1, and a locking member (not shown) is provided to firmly lock the switchboard 1 and the door so that the door is arbitrarily opened by the earthquake vibration, (Not shown) may be further provided.

When connecting the outer frame (not shown) of the switchboard 1 to the upper and lower seismic frames 50 and 60 and the side seismic frame 70 by the earthquake-proof connector 80, (Not shown) can be installed. When the shock due to the earthquake vibration occurs due to such a structure, the frames can be firmly assembled by the earthquake-proof connector 80, and at the same time, The impact can be appropriately absorbed, and as a result, the seismic performance can be further improved without being easily deformed or damaged by the impact or the like relative to the structure in which the anti-vibration rubber is not provided.

In the above, only the earthquake-proof structure according to the present invention is applied to the switchboard 1, but it can be applied to high-pressure, low-pressure, motor control panel, and distribution panel.

As described above, according to the present invention, small vibration can be absorbed by a tilt angle control unit of a seismic isolation structure in accordance with the site conditions or installation requirements of a structure to be protected (a switchboard, a high-pressure cabin, a low-pressure cabin, a motor control cabin, Even if a large vibration exceeding the seismic limit of the seismic structure is applied, the strength of the vibration acting on the structure to be protected is relatively reduced by the action of the seismic structure and the damper unit, There is a synergy effect in which the anti-seismic protection performance of the structure to be protected is also improved.

1: Switchboard 2: High Voltage
3: Low pressure chamber 4: Motor control panel
4 ': Distribution board 5: Base isolation structure
10: lower frame 11: fixed shaft
20: inclination angle adjusting unit 21:
21A: Hinge pin coupling hole 21B: Pin coupling hole
22, 23: swash plate 24: angle adjusting pin
30: bearing unit 31: mounting plate
32: fixed shaft 33: bearing
34: connecting plate 35:
40: upper frame 50: upper seismic frame
60: bottom seismic frame 70: side seismic frame
71: horizontal reinforcing frame 72: vertical reinforcing frame
80: Seismic connector D: Damper
P: Hinge coupling pin S: Spring

Claims (6)

In a power transmission < RTI ID = 0.0 > (1) < / RTI > for absorbing and protecting an impact due to earthquake vibration by an earthquake-
The vibration isolation structure (5) comprises a lower frame (10) fixed to the floor and formed in a square frame shape;
A plurality of inclination angle adjusting units (20) fixed to the corner portions of the lower frame (10) in x and y axis directions, respectively;
A plurality of bearing units (30) movably mounted on the inclination angle adjusting unit (20) and having a pair of bearings (33) installed at 90 degrees;
And an upper frame (40) on which the switchboard (1) is seated while the plurality of bearing units (30) are coupled,
The inclination angle adjusting unit 20 includes a fixed plate 21 whose cross-sectional shape is a " C " A pair of swash plates (22, 23) coupled to the fixed plate (21) by a hinge pin (P) at one end so as to adjust the angle of the free end; And an angle adjusting pin (24) adjustably installed on the fixing plate (21) to adjust an installation angle of the pair of swash plates (22, 23)
The angle of the pair of swash plates 22 and 23 is adjusted so as to form a horizontal or gentle slope of a "V" shape depending on whether or not the angle adjusting pin 24 is installed and installed, After the bearing unit 30 is deflected, the plurality of bearing units 30 are returned to their original positions by the self weight of the switchboard 1,
When the earthquake vibration is applied, the plurality of inclination angle adjusting units 20 are moved together with the lower frame 10 in response to the earthquake vibration, As the plurality of inclination angle adjusting units 20 are moved, the bearings 33 come into rolling contact with or slip from the inclined plates 22 and 23, and are relatively positioned relative to the lower frame 10 to absorb the earthquake vibration And a seismic isolation structure having a seismic isolation structure.
The method according to claim 1,
A plurality of pin coupling holes 21B are formed at both ends of the fixing plate 21 at predetermined intervals along the length of the fixing plate 21,
And the angle of inclination of the pair of swash plates (22, 23) is adjusted according to the position where the angle adjusting pin (24) is inserted, selected from the plurality of pin coupling holes (21B) .
The method according to claim 1,
The lower frame 10 is provided with fixing shafts 11 at corner portions thereof,
Wherein a spring (S) is installed diagonally to connect the connecting plate (34) and the fixed shaft (11) after the connecting plate (34) is installed in the bearing unit (30) ≪ / RTI >
The method according to claim 1,
Wherein the bearing (33) of the bearing unit (30) is a spherical roller bearing that is angularly adjusted within a certain range with respect to a rotation axis.
The method according to any one of claims 1 to 4,
Wherein a damper (D) for restricting the movement of the bearing (33) and absorbing impact is installed on one side of the inclination angle adjusting unit (20).
The method according to claim 1,
The earthquake-resistant structure includes upper and lower earthquake-resistant frames (50, 60) spaced apart from the lower and upper surfaces of the switchboard (1) at regular intervals;
A pair of side seismic frame (70) installed at both sides of the interior of the switchboard (1) at a predetermined interval;
An earthquake-proof connector 80 assembled by connecting corner portions of the upper and lower seismic frames 50 and 60 and the pair of side seismic frame 70 in the interior and lower sides of the switchboard 1, And an earthquake-resistant and earthquake-resistant structure.

Images