KR20180036926A - Distribution Board with Earthquake-Proof Device(High-voltage Switchgear, Low-voltage Switchgear, Motor Control Center, Cabinet Panel) - Google Patents

Abstract

The present invention relates to a switchgear (high voltage board, low voltage board, motor control board, distribution board) having an earthquake-proof device, which can be manufactured easily by a simple structure and can effectively reduce vibration and impact of vertical and horizontal directions by an earthquake or the like transmitted to the switchgear. In the switchgear having an earthquake-proof device according to the present invention to solve the above, the earthquake-proof device comprises: an upper bracket which includes an upper horizontal plate of having a predetermined size and a pair of upper vertical plates of being installed to have a predetermined length vertically at a predetermined interval on the lower surface of the upper horizontal plate; a lower bracket which is positioned in the lower part of the upper bracket and includes a lower horizontal plate of having a predetermined size to correspond to the upper horizontal plate and a pair of lower vertical plates of being arranged to form 90 degrees from the pair of upper vertical plates while being installed to have a predetermined length vertically at a predetermined interval on the upper surface of the lower horizontal plate; a connection block of a predetermined size which is positioned between the pair of upper and lower vertical plates; a plurality of connection bolts which are installed to be able to move in a vertical direction by respectively penetrating the pair of upper and lower vertical plates and are assembled with the connection block at one end; a first elastic spring which is installed between the lower surface of the upper horizontal plate and the upper surface of the connection block; and a second elastic spring which is installed between the upper surface of the lower horizontal plate and the lower surface of the connection block.

Description

{Distribution Board with Earthquake-Proof Device (High-voltage Switchgear, Low-voltage Switchgear, Motor Control Center, Cabinet Panel)}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switchboard (high-pressure, low-voltage, motor control panel, and distribution board) equipped with an earthquake-proof device and more particularly to a switchboard, a high-pressure switch, a low-voltage switch, (High-voltage, low-voltage, motor control panel, and distribution board) equipped with an earthquake-proof device capable of enhancing the structural safety against seismic resistance of a transmission and reception panel by absorbing vibration or shock generated by an earthquake, It is about the class.

In general, switchgear is a device used to monitor, control and protect power systems. It refers to aggregates of unit devices, supporting structures, and wires for connecting them. And a plurality of panels for controlling the facilities.

If vibrations or shocks due to external factors such as crustal fluctuation or explosion are applied to such a switchboard, electrical components such as power equipment, wiring and protective relay installed inside the control panel may be damaged, There is a risk of interruption or fire.

Therefore, it is important to secure the safety of buildings and structures due to the damage caused by frequent earthquakes in recent years. Therefore, seismic design standards for the switchboards installed in the buildings are gradually strengthened.

An example of a conventional technique for solving the above problem is a switchboard having an earthquake-resistant function of Patent Publication No. 0939475. The switchboard having the earthquake-proof function disclosed in the patent document has a plurality of A bearing support case having a bearing insertion hole into which a self-aligning bearing is inserted and fixed to the upper surface of the horizontal plate of the bottom angle; And a bearing stop ring is installed at the lower end portion of the self-aligning bearing. The lower end portion is fitted to the bearing inserting hole of the bearing supporting case together with the self-aligning bearing and the upper end is inserted through the bolt passing hole drilled in the support angle, A support bolt fixed to the horizontal plate of the support angle; The support bolt is inserted into the bearing insertion hole of the bearing support case in a state where the inner ball is coupled to the lower end of the support bolt, and when the impact is applied in the horizontal direction from the outside, A self-aligning bearing that tilts in an opposite direction to which the impact force is applied and allows the compression spring to absorb the impact force; And the support bolt is fixed to the horizontal plate of the bottom angle with the bearing support case through several bolts from the upper surface of the bearing support case, So as not to be detached from the cover; A supporting bolt and a bearing supporting case between the upper surface of the horizontal plate of the bottom angle and the bottom surface of the horizontal plate of the supporting angle; And a compression spring installed to surround the outer side of the lid to absorb vibrations and shocks externally applied.

However, when a shock is applied in the horizontal direction, the support bolt moves at a predetermined angle within the bearing supporting case. In this case, when the floor angle and the support angle collide with each other, wear and breakage occur, Also, there is a problem that noise occurs due to collision between the bottom angle and the support angle.

Therefore, it is easy to manufacture due to the simple structure, and even if vibrations and impacts occur in the vertical and horizontal directions due to an earthquake or the like, a seismic isolation structure with improved structure to effectively reduce the vibration and shock transmitted to the upper structure, (High-pressure, low-pressure, motor control, and distribution boards).

KR 10-0939475 B1 (2010. 01. 22.) KR 10-1648136 B1 (Aug. 08, 2016) KR 10-1476735 B1 (Jan. 22, 2015) KR 10-1515796 B1 (Apr. 22, 2015)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a seismic isolation system, And an earthquake-resistant device capable of effectively reducing vibrations and impact in the direction of the earthquake.

According to an aspect of the present invention, there is provided a switchboard including an earthquake-proof device, including: an upper horizontal plate having a predetermined size; An upper bracket including a pair of upper vertical plates; A lower horizontal plate positioned at a lower portion of the upper bracket and having a predetermined size to correspond to the upper horizontal plate, and a pair of upper and lower horizontal plates, each having a predetermined length vertically spaced apart from the upper surface of the lower horizontal plate, A lower bracket including a pair of lower vertical plates arranged to form an angle of 90 DEG with the straight plate; A connecting block of a predetermined size positioned between the pair of upper and lower vertical plates; A plurality of connecting bolts, one end of which is inserted into the connecting block, the connecting bolts being vertically movable through the pair of upper and lower vertical plates respectively; A first elastic spring installed between a bottom surface of the upper horizontal plate and an upper surface of the connection block; And a second elastic spring installed between an upper surface of the lower horizontal plate and a bottom surface of the connection block.

According to another aspect of the present invention, there is provided an elastic spring for returning the connection bolts to an initial position where the upper and lower brackets and the connection block are assembled by an elastic force.

Further, the present invention is characterized in that a through hole is formed in which the bolts are assembled so that the upper and lower horizontal plates are installed and fixed on the ground surface.

In addition, the present invention is further characterized in that the vertical bolt is inserted into the upper and lower vertical plates and a vertical slot having a vertical length is formed so as to be moved up and down by a predetermined distance.

According to the present invention, it is possible to reduce the vibration transmitted to the transmission / reception panel while freely moving in correspondence with the vibrations acting in the horizontal and vertical directions, the displacement of the ground, and the like, which are provided on the bottom surfaces of the switchgear (high pressure, low pressure, motor control panel, So that it is possible to stably maintain the state in which the switchboard is installed.

Further, the present invention has a merit that the construction is simple and the manufacturing cost can be reduced, and the installation and maintenance are easy.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an example of a switchboard with an earthquake-proof apparatus according to the present invention; FIG.
2 is a perspective view showing an example of a vibration isolation device according to the present invention.
Figure 3 is an exploded perspective view of Figure 2;
Figure 4 is a front view of Figure 2;
5 is a sectional view of FIG. 2;
6 (a) is a perspective view showing an example of an upper bracket according to the present invention.
6 (b) is a perspective view showing an example of a lower bracket according to the present invention.
7 is a perspective view showing an example of a connection block according to the present invention;
8 is a sectional view showing an example of a connection block according to the present invention.
FIG. 9 is an explanatory view showing an example in which the intensity of transmitted vibration is reduced when vibration is applied in a horizontal direction of a switchboard having an earthquake-proof apparatus according to the present invention.
10 is a view showing a direction in which the upper and lower brackets of the power switchboard equipped with the vibration isolation device according to the present invention can move relative to each other in the horizontal direction.
FIG. 11 is an explanatory view showing an example in which the intensity of transmitted vibration is reduced when vibration is applied in a vertical direction to a switchboard provided with an earthquake-proof apparatus according to the present invention.
FIG. 12 is a state diagram showing an example in which distortion is absorbed when a distortion is applied to a switchboard provided with an earthquake-proof apparatus according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Disclosure of Invention Technical Problem [8] The present invention provides a power storage and transmission system having an earthquake-resistant device capable of effectively reducing vibrations and impacts in vertical and horizontal directions, which are simple in structure and easy to manufacture, A plurality of seismic isolation devices 2 are installed on the bottom of the switchboard 1 as shown in FIGS. 2 and 3. The seismic isolation device 2 includes an upper bracket 10, a lower bracket 20, A connecting block 30, a connecting bolt 40 and first and second resilient springs 50A and 50B.

In this case, the seismic isolation device 2 may be installed on the bottom surface of the switchboard 1 instead of being installed on the bottom surface of the high-pressure panel, the low-pressure panel, the motor control panel and the distribution panel. For example.

The upper bracket 10 is fixed to the bottom plate 1A of the switchboard 1 and is elastically supported by first and second elastic springs 50A and 50B described later.

2 to 5 and 6 (a), the upper bracket 10 includes a rectangular or disk-shaped upper horizontal plate 11 having a predetermined size, And a pair of upper vertical plates 12 installed vertically at predetermined intervals so as to have a predetermined length, whereby the upper bracket 10 has a cross-sectional shape.

A through hole 11A having a predetermined size through which the bolt B2 is inserted is formed in the center of the upper horizontal plate 11 and a connection bolt 40 to be described later is inserted through the pair of upper vertical plates 12, And a vertical slot 12A is formed so as to be vertically movable up and down.

The through hole 11A of the upper horizontal plate 11 is positioned in correspondence with the position of the hole (not shown) formed in the bottom plate 1A of the switchboard 1 by the configuration of the upper bracket 10 as described above The bolts B2 penetrate and are assembled with the nuts N so that the upper bracket 10 is firmly fixed to the bottom plate 1A of the switchboard 1.

2 to 5 show that the bolts B2 are assembled so that the bottom plate 1A passes through the upper horizontal plate 11 and then the nut N is assembled on the bottom plate 1A. The bolts B2 may be assembled so as to pass through the upper horizontal plate 11 sequentially from the bottom plate 1A side and then the nut N may be assembled from the upper horizontal plate 11 side.

The lower bracket 20 is fixed to the ground surface 3 at a predetermined distance so as to face the upper bracket 10.

The lower bracket 20 has the same structure as the upper bracket 10 and is different only in the upper and lower directions. The lower bracket 20 is positioned below the upper bracket 10 as shown in FIG. 6 (b) And a pair of upper vertical plates 12, which are installed to have a predetermined length vertically and spaced apart from each other by a predetermined distance on the upper surface of the lower horizontal plate 21, So that the lower bracket 20 has a "ㅛ" -shaped cross-sectional shape.

A through hole 21A having a predetermined size through which another bolt B1 is inserted is formed in the middle of the lower horizontal plate 21 and a connecting bolt 40 described later is formed on the pair of lower vertical plates 22. [ A vertical slot 22A is formed so as to be vertically movable upward and downward at a predetermined distance.

Since the lower bracket 20 is formed in the shape of the upper bracket 10, the parts can be shared and used only by setting the positions of the upper bracket 10 and the lower bracket 10 differently from each other. And the manufacturing process can be greatly reduced.

The connecting block 30 is installed on the space formed by the upper and lower vertical plates 12 and 22 of the upper and lower brackets 10 and 20 so that the upper and lower brackets 10 and 20 are connected to the connecting bolts 40 in one configuration.

7 and 8, the connection block 30 is formed of a rectangular or circular block having a predetermined size, and the connection block 30 is provided with upper and lower vertical plates 12 and 22, respectively, Four connecting holes 31 for screw assembly of the connection boats 40 are formed at intervals of 90 degrees.

At this time, an auxiliary elastic spring (not shown) having a smaller diameter than that of the first and second elastic springs 50A and 50B described later may be further provided on the upper and lower surfaces of the connecting block 30, In addition to the first and second resilient springs 50A and 50B according to the load of the switchboard 1 according to the load of the switchboard 1, the elasticity of supporting the switchboard 1 at a predetermined distance from the ground surface 3 can be reinforced.

For this, a groove having a size corresponding to the outer side diameter of the auxiliary elastic spring or a protrusion having a size corresponding to the inner side diameter of the auxiliary elastic spring is formed on the upper and lower surfaces of the connection block 30 .

The connecting bolts 40 are screwed into the connecting block 30 through the vertical slots 12A and 22A of the upper and lower vertical plates 12 and 22 so that the upper and lower brackets 10 and 20 and the connecting block 30 ) Within a predetermined range.

The connecting bolt 40 may be a bolt of a predetermined length or may be threaded on the outer surface of a steel pipe having a predetermined length, And a fixing plate serving as a stopper for preventing the deterioration.

The connecting bolts 40 are provided with elastic springs 41 for moving the upper and lower brackets 10 and 20 in the horizontal direction and then returning to the originally installed positions by the elastic force. Or between the inner surface of the upper and lower vertical plates 12 and 22 and the connection block 30, or between the inner surface of the upper and lower vertical plates 12 and 22, Respectively.

The 'outer side' of the upper and lower vertical plates 12 and 22 refers to a surface where the upper and lower vertical plates 12 and 22 are exposed to the outside, (12, 22) face each other.

A washer (not shown) of a predetermined size having a disc shape for restricting the position of the elastic spring 41 is provided on the side of the elastic spring 41 so that the elastic spring 41 can not easily separate the position of the connecting bolt 40. [ And can be installed at both end portions.

The first and second elastic springs 50A and 50B are configured to elastically support the upper and lower brackets 10 and 20 to attenuate vibrations of the ground surface 3 transmitted to the switchboard 1.

The first and second resilient springs 50A and 50B are formed so as to have the same or different diameters and are disposed between the bottom surface of the upper horizontal plate 11 and the upper surface of the connection block 30, And is provided between the upper surface and the bottom surface of the connection block 30, respectively.

9, when the vibrations in the horizontal direction are generated from the ground surface 3, as shown in Fig. 9, the power transmission and distribution panels (high pressure panel, low pressure panel, motor control panel, The upper and lower brackets 10 and 20 are moved in the horizontal direction while the elastic spring 41 provided on the connecting bolt 40 connecting the upper and lower brackets 10 and 20 is appropriately compressed, 3 is transmitted to the upper bracket 20 via the lower bracket 10, the intensity of the vibration is relatively attenuated and transmitted, and as a result, the vibration is transmitted by the vibration acting in the horizontal direction The stationary state is maintained while the moving distance of the switchboard 1 is reduced.

At this time, the upper and lower brackets 10 and 20 can be moved correspondingly in any direction of 360 degrees by the vibration acting in the horizontal direction, whereby the vibrations acting in the horizontal direction can be moved in any direction The vibration can be attenuated correspondingly.

11, a plurality of connecting bolts 30 connecting the upper and lower brackets 10 and 20 and a connecting block 30 connecting the upper and lower brackets 10 and 20, 30 are elastically supported by the first and second resilient springs 50A, 50B while being appropriately moved vertically along the vertical slots 12A, 22A so that relative to the vertical travel distance transmitted from the ground 3, The vertical movement distance to be transmitted to the switchboard 1 is reduced, so that the state in which the switchboard 1 is stably installed even in the vibration acting in the vertical direction is maintained.

At this time, the elastic spring for elastically supporting the upper and lower brackets 10, 20 by the vibration acting in the vertical direction is divided into upper and lower portions with reference to the connecting block 30, So that the vibration transmitted from the ground surface 3 can be more effectively reduced and transmitted to the switchboard 1 side.

12, the elastic spring 41 and the first and second resilient springs 50A and 50B provided on the connecting bolt 40 are properly compressed to the ground surface Since the displacement of the ground surface 3 is naturally attenuated and transmitted while the displacement of the ground surface 3 is transmitted to the switchboard 1 so that the switchboard 1 is relatively smaller than the displacement amount of the ground surface 3 Width, or stably maintained.

On the other hand, once the seismic equipments 2 are appropriately moved in correspondence with the horizontal and vertical directions and displacements, the elastic restoring force of the elastic spring 41 and the first and second elastic springs 50A and 50B naturally And the installed state is stably maintained as it is returned.

As described above, according to the present invention, a plurality of vibrators are installed on the bottom surfaces of a power transmission / reception (high pressure, low pressure, motor control panel, and distribution board) so as to freely move in response to vibrations acting in the horizontal and vertical directions, So that it is possible to stably maintain the installation state of the switchboard.

In addition, the present invention can reduce the manufacturing cost due to the simple structure, and is easy to install and maintain.

Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. It is to be understood that the scope of the present invention should not be interpreted as being limited only by the scope of the present invention and that the scope of the present invention should not be construed to be interpreted to limit the scope of the present invention. .

1: switchgear 1A: bottom plate
2: Seismic device 3: Ground
10: upper bracket 11: upper horizontal plate
11A: Through hole 12: Lower vertical plate
12A: vertical slot 20: lower bracket
21: upper horizontal plate 21A: through hole
22: Lower vertical plate 22A: Vertical slot
30: connection block 31: fastening hole
40: connecting bolt 41: elastic spring
50A: first elastic spring 50B: second elastic spring
B1, B2: Bolt N: Nut

Claims (4)

In a switchboard (1) provided with an earthquake-proof device (2) on a bottom surface for absorbing earthquake vibration,
The earthquake-proof apparatus (2)
An upper bracket (11) including an upper horizontal plate (11) having a predetermined size and a pair of upper vertical plates (12) installed at a predetermined interval on a bottom surface of the upper horizontal plate 10);
A lower horizontal plate 21 positioned at a lower portion of the upper bracket 10 and having a predetermined size corresponding to the upper horizontal plate 11 and a lower horizontal plate 21 vertically spaced at a predetermined interval from the upper surface of the lower horizontal plate 21, A lower bracket (20) including a pair of lower vertical plates (22) installed so as to have a length equal to 90 ° with respect to the pair of upper vertical plates (12);
A connecting block 30 of a predetermined size positioned between the pair of upper and lower vertical plates 12 and 22;
A plurality of connecting bolts (40) installed vertically movably through the pair of upper and lower vertical plates (12, 22), respectively, one end of which is assembled to the connecting block (30);
A first elastic spring (50A) installed between a bottom surface of the upper horizontal board (11) and an upper surface of the connection block (30); And
A second elastic spring 50B installed between the upper surface of the lower horizontal plate 21 and the lower surface of the connection block 30;
And an earthquake-resistant device for earthquakes.
The method according to claim 1,
In the plurality of connecting bolts 40,
Wherein an elastic spring (41) for restoring an initial position where the upper and lower brackets (10, 20) and the connecting block (30) are assembled is restored by an elastic force is provided.
The method according to claim 1 or 2,
In the upper and lower horizontal plates 11 and 21,
Wherein a through hole (11A, 21A) is formed in which a bolt is assembled so that the upper and lower horizontal plates (11, 21) are fixed to the ground surface (3) .
The method according to claim 1,
In the upper and lower vertical plates 12 and 22,
Wherein the vertical bolt holes (12A, 22A) are vertically formed so that the connection bolts (40) are penetratedly inserted and moved up and down by a predetermined distance.

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