KR101894976B1 - Distribution Board with Earthquake-Proof Device - Google Patents

Abstract

The present invention relates to a switchgear including an earthquake-proof device, which can reduce vibration and impact transmitted to a switchgear even when vibration such as an earthquake occurs, has a structure which is not easily damaged, and can reduce noises due to the vibration. To this end, the switchgear including an earthquake-proof device comprises: a lower base which has a fixed size and is fixedly installed on the floor; an upper base which is positioned in the upper part of the lower base at a fixed interval; a lower guide block which is fixedly installed on the top surface of the lower base, and has an arc-shaped guide groove formed on the top surface thereof in a horizontal direction; an upper guide block which is fixedly installed on the bottom surface of the upper base, and has an arc-shaped guide groove formed on the bottom surface thereof in a horizontal direction at right angles to the guide groove of the lower guide block; a spherical elastic body which is installed between the guide grooves; a penetrating bolt which has a fixed length, and is installed to consecutively penetrate the lower base, the lower guide block, the elastic body, the upper guide block, and the upper base; and an elastic spring which is installed between the lower base and the upper base, and has a fixed diameter so that the lower guide block, the upper guide block, and the elastic body are positioned therein.

Description

[0001] The present invention relates to a distribution board with earthquake-

More particularly, the present invention relates to a switchgear having a seismic isolation device, and more particularly, a plurality of switchgears are provided on the bottom of a switchgear to absorb (reduce) vibrations or shocks generated by an earthquake, The present invention relates to a switchgear equipped with an earthquake-resistant device capable of increasing the earthquake resistance.

In general, a switchboard is a device used for monitoring, controlling, and protecting a power system. The switchboard includes a unit device, a support structure, a plurality of wires, a device for distributing electric power, and a control panel.

If vibrations or shocks due to earthquakes, crustal movements or explosions are applied to such a switchboard, the structures installed inside the control panel may be damaged, there is a danger that power supply may be interrupted or fire may occur due to power failure, Recently, seismic design standards for the switchboards in buildings have been strengthened.

Recently, a variety of techniques have been developed for enhancing the seismic performance of the switchboard by installing a seismic device on the bottom of the switchboard so that the vibration and shock generated by the earthquake are reduced to the switchboard.

As described above, in the conventional art of a switchboard having a seismic isolation device, there is a switchboard having an earthquake-proof function of JP 0939475. In the switchboard disclosed in the above patent document, a plurality of seismic isolation means are provided between a bottom angle and a support angle, A bearing support case having a bearing insertion hole into which an automatic alignment 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; And a compression spring installed to surround the support bolt, the bearing support case, and the cover, between the upper surface of the horizontal plate of the bottom angle and the bottom surface of the horizontal plate of the support angle 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 in the bearing supporting case. In this case, the floor angle and the support angle collide with each other, There is a problem that the bottom angle collides with the supporting angle and noise is generated.

Therefore, vibration and shock generated by earthquake and the like are reduced and transmitted to the switchboard, so that the breakdown of the switchboard can be prevented, and the structure is constructed so that noise is not generated in the process of moving in response to vibration without being easily worn or damaged. It is required to develop a switchboard having an improved seismic device.

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 vibration- And a seismic isolation device capable of reducing noise caused by vibration without being easily damaged by structural damage.

According to an aspect of the present invention, there is provided a switchboard including an earthquake-resistant device, comprising: a lower base fixedly installed on a floor; An upper base spaced apart from the upper base by a predetermined distance; A lower guide block fixed on the upper surface of the lower base and having a guide groove formed in a horizontal direction on an upper surface thereof; An upper guide block fixedly installed on a bottom surface of the upper base and having an arc-shaped guide groove formed in the bottom surface thereof in a horizontal direction orthogonal to the guide groove; A spherical elastic body provided between the guide grooves; A through bolt having a predetermined length, which penetrates the lower base, the lower guide block, the elastic body, the upper guide block, and the upper base in order; And an elastic spring installed between the lower base and the upper base and having a predetermined diameter so that the lower guide block, the upper guide block, and the elastic body are positioned inside.

According to another aspect of the present invention, an auxiliary spring is installed on the through-bolt so as to be closely contacted to one side of the lower base and the upper base, and is elastically supported.

Further, the present invention is characterized in that the elastic body has a spherical shape, and a hole is formed through the upper and lower portions of the core portion; And a surface layer part of a soft rubber material which is formed to surround the outer surface of the core part and which is connected to the hole and has a hole penetrating up and down.

In addition, the present invention is characterized in that the diameter of the surface layer portion is formed at a ratio of 1: 1 to 0.5 with respect to the core portion.

The lower guide block and the upper guide block are installed to connect the side surfaces of the lower guide block and the upper guide block so that the lower guide block and the upper guide block are moved corresponding to the vibration, And a plate spring for restoring the installation position of the guide block is further provided.

According to the present invention, when a vibration generated by an earthquake or the like is transmitted to a transmission / reception system through an earthquake-proof apparatus, the vibration of the lower base and the upper base is moved in the vertical and horizontal directions by the elastic body and the elastic spring of the earthquake- , Whereby the intensity of the vibration transmitted to the power transmission / reception section is reduced, effectively preventing the power transmission / reception section from being damaged due to vibration and impact caused by the earthquake.

The elastic body is composed of a core part made of a hard rubber material having a relatively small deformation and a surface layer part made of a soft rubber material easy to deform. The elastic part can be easily deformed corresponding to the vibration acting in the vertical direction, It is prevented that the switchgear moves excessively in the up-and-down direction even if the vibration exceeds the deformation limit of the surface layer.

In addition, since the upper and lower guide blocks are installed in a direction intersecting with each other and are supported by spherical elastic bodies, the lower and upper bases are horizontally moved within a predetermined range corresponding to the vibrations acting in the horizontal direction, The transmitted vibration is effectively reduced.

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 a perspective view of the bottom of Figure 2;
Figure 4 is an exploded perspective view of Figure 2;
5 is a sectional view of FIG. 2;
6 is a perspective view showing an example of a lower base and a lower guide block according to the present invention.
7 is a side view showing an example of an upper base and an upper guide block according to the present invention.
8 is a sectional view showing an example of an elastic body according to the present invention.
9 is a view showing an example in which a plate spring is installed while a vibration isolation device according to the present invention is installed between a switchboard and a floor.
10 is a view showing an example in which a shielding film is installed in a seismic isolation device according to the present invention.
11 is a view showing an example in which an earthquake-proof apparatus according to the present invention is moved up and down by vibration.
12 is a view showing an example in which an earthquake-proof apparatus according to the present invention is angularly adjusted in response to an angle change of a floor.

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

An object of the present invention is to provide a power storage and transmission system equipped with a seismic isolation device capable of reducing vibrations and shocks transmitted to a transmission and reception system even when vibrations such as earthquakes occur, 1 to 5, the earthquake-proof apparatus 3 includes a lower base 10, an upper base 20, a lower guide block (not shown) 30, an upper guide block 40, an elastic body 50, a through bolt 60, and an elastic spring 70.

The lower base 10 is configured to support a lower guide block 30, which will be described later, while being fixed by bolts B previously provided on the floor.

6, the lower base 10 includes a horizontal portion (not shown) having a predetermined width and a length, a vertical portion (not shown) connected to both ends of the horizontal portion and vertically bent downward and having a predetermined length And a floor installation plate 12 having a predetermined length horizontally connected to both side vertical portions of the base plate 11. The bottom plate 11 has a substantially U- do.

At this time, a bolt assembly hole 11A is formed in the horizontal portion of the base plate 11 so as to penetrate the center portion in the vertical direction, and a pair of through holes H are formed in the bottom mounting plate 12 on both sides .

The through hole H of the floor mounting plate 12 is positioned and inserted in correspondence with the positions of the plurality of bolts B previously provided on the floor 2 by the construction of the lower base 10 as described above, N1 are assembled and firmly fixed to the floor so that the horizontal portion of the base plate 11 is naturally spaced apart from the floor 2 by a predetermined distance.

As a result, even if the penetrating bolt 60 to be described later is installed so as to pass through the bolt assembling hole 11A of the horizontal portion, the head portion of the bolt is spaced apart from the bottom 2 by a predetermined distance, It can move up and down properly according to the up and down movements.

The upper base 20 is configured to be fixed to the bottom plate 1A of the switchboard 1 by using a through bolt 60 and a nut N2 .

As shown in FIGS. 4 and 7, the upper base 20 is made of a rectangular plate having a predetermined width and a length. The upper base 20 is provided with a through- (21) is formed.

At this time, the flow hole 21 is relatively larger than the diameter of the penetrating bolt 60 described later, whereby the lower base 10 is moved up and down by the vibration transmitted from the bottom 2, The lower base 10 can be angled separately from the upper base 20 even when the through bolts 60 are assembled to penetrate the flow holes 21 when the installed angle is adjusted, The amount of angular change transmitted to the upper base 20 is significantly reduced in comparison with the angle change amount transmitted from the upper base 20, so that the state of the server 1 can be maintained stably.

Such a flow hole 21 can absorb and transmit vibration such as an earthquake and the like in a stable installation and maintenance of the switchboard 1 and can securely be installed in the diameter of the through bolt 60 to be described later in order to ensure stable installation of the switchboard 1 To 8 times larger than that of the first embodiment.

This is because if the diameter of the flow hole 21 is less than 5 times the diameter of the through bolt 60, the range of movement of the lower base 10 and the upper base 20 is reduced, The range of the movement of the lower base 10 and the upper base 20 is excessively increased and the safety of the switchboard 1 is rather lowered.

The lower guide block 30 and the upper guide block 40 are provided so as to be in contact with the elastic body 50 to be described later so that the lower base 10 and the upper base 20 are deformed at a predetermined angle acting on the floor 2 (In the diameter range of the flow hole 21), so that the horizontal movement is possible.

6 and 7, the lower guide block 30 and the upper guide block 40 are formed in the shape of a square block and have guide grooves 31 , 41 are formed.

Through holes 32 and 42 are formed in the middle of the guide grooves 31 and 41 so as to pass through the upper and lower portions and the lower guide block 30 is fixed to the upper surface of the lower base 10, Is fixed to the bottom surface of the upper base 20.

The through hole 42 formed in the upper guide block 40 is formed to be equal to or larger than the diameter of the flow hole 21 so that the lower base 10 and the lower The distance that the upper base 20 and the upper guide block 40 are angularly adjusted or horizontally moved in accordance with the deformation of the floor 2 is relatively reduced when the guide block 30 is moved or deformed at a predetermined angle do.

The elastic body 50 is provided between the lower guide block 30 and the upper guide block 40 so as to reduce vibration in the vertical direction together with the elastic spring 70 to be described later, 20 can be easily adjusted to each other at a predetermined angle.

8, the elastic body 50 includes a core portion 51 having a spherical shape and made of a hard rubber material, and a surface layer portion 52 formed to surround the outer surface of the core portion 51, (52).

Holes 51A and 52A penetrating through the core portion 51 and the surface layer portion 52 to penetrate the penetrating bolt 60 described later are formed.

At this time, the diameter of the surface layer 52 with respect to the core portion 51 is formed in a ratio of 1: 1 to 0.5. If the surface layer portion 52 is formed in a ratio exceeding 1: 1 of the diameter of the core portion 51, The upper base 20 moves excessively due to the vibration acting in the vertical direction due to the easy elastic deformation of the surface layer 52 and the safety of the devices and components installed inside the switchboard 1 is deteriorated. The amount of elastic deformation caused by the surface layer 52 is reduced and the vibration transmitted from the bottom 2 is reduced so that the transmission effect to the upper base 20 is greatly reduced .

The through bolts 60 are installed so as to pass through the lower base 10, the lower guide block 30, the elastic body 50, the upper guide block 40 and the upper base 20 in order, Thereby restricting movement in the horizontal direction.

As such a through bolt 60, a conventional bolt having a predetermined length is used as shown in FIGS. The through bolts (60) are provided with auxiliary springs (80A, 80B) of a predetermined diameter.

The auxiliary springs 80A and 80B are positioned between the head portion of the through bolt 60 and the bottom surface of the base plate 11 and between the upper base 20 and the nut N2 assembled to the through bolt 60 Respectively.

A disk-shaped washer W having a diameter larger than that of the flow holes 21 is provided in the through bolt 60 on the upper surface side of the upper base 20 so that the auxiliary spring 80A is inserted into the flow holes 21 Is prevented from being inserted.

The lower base 10 and the upper base 20 move vertically and horizontally within a predetermined range by the configuration of the through bolt 60 and the auxiliary springs 80A and 80B as described above, 10, the upper base 20, and the elastic body 50 are separately prevented from being separated and displaced from each other.

The elastic spring 70 is provided between the lower base 10 and the upper base 20 to support the upper base 20 by an elastic force.

9, the elastic spring 70 is installed between the lower base 10 and the upper base 20, and the lower guide block 30, the upper guide block 40, and the elastic body 50 are arranged on the inner side Respectively.

At this time, the elastic spring 70 may be fixed to the lower base 10 and the upper base 20, which are in contact with both ends of the elastic spring 70 by spot welding or the like so as not to be displaced by vibration or the like.

When the vibration acting in the vertical direction from the bottom 2 occurs due to the configuration of the elastic spring 70 as described above, the elastic spring 70 and the elastic body 50 are appropriately compressed to absorb the vibration, The vibration transmitted to the upper base 20 is reduced relative to the intensity of the vibration transmitted from the floor 2 so that the vibration of the upper and lower bases 20, The intensity of the vibration transmitted to the body 1 is reduced.

In the meantime, according to the present invention, when the lower base 10 and the upper base 20 move vertically and horizontally by the vibration transmitted from the floor 2, the elastic body 50, the elastic spring 70 and the auxiliary spring 80A Even if the guide grooves 31 and 41 are naturally returned to their initial positions due to the elastic restoring force acting on the lower guide block 30 and the upper guide block 30, 9, a plate spring 90 for vertically connecting the lower guide block 30 and the upper guide block 40 vertically is installed on one side.

The leaf spring 90 is made of a thin metal plate and is deformed so that the lower base 10 and the upper base 20 can move properly in the vertical and horizontal directions in response to the vibration transmitted from the bottom 2, The spring force of the leaf spring 90 is deformed corresponding to the rotation in the horizontal direction and the elastic restoring force of the leaf spring 90 is applied The lower guide block 30 and the guide grooves 31 and 41 of the upper guide block 40 are arranged so as to intersect with each other.

If foreign substances are introduced into the guide grooves 31 and 41 between the lower guide block 30 and the upper guide block 40, the elastic deformation of the elastic body 50 may be affected, 10, a blocking film 100 having a predetermined length in the up and down direction is provided along the outer surface of the lower guide block 30 and the upper guide block 40, 100). ≪ / RTI >

In this case, the lower guide block 30 is formed with the inclined surface A so that both ends of the upper portion are inclined downward with respect to the guide groove 31, whereby foreign matter can not be easily introduced into the elastic body 50.

11, when the vibration acts in the up-and-down direction from the floor 2 as shown in Fig. 11, the elastic body 50 and the elastic spring 70 are appropriately The vibration of the upper base 20 is absorbed and transmitted to the upper base 20 so that the intensity of the vibration transmitted to the upper base 20 is reduced relative to the intensity of vibration acting on the floor 2 .

In addition, when the bottom 2 is displaced by a predetermined angle, the installation angle of the lower base 10 is displaced together with the angle, and the angle at which the upper base 20 is displaced is relatively reduced, .

As described above, according to the present invention, when a vibration generated by an earthquake or the like is transmitted to a transmission / reception system through an earthquake-proof device, the vibration of the lower base and the upper base is appropriately moved in the vertical and horizontal directions by the elastic body and the elastic spring of the vibration- So that the intensity of the vibration transmitted to the switchgear is reduced, thereby effectively preventing breakage of the switchgear due to a large vibration.

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: bottom 3: seismic device
10: lower base 11: base plate
11A: Bolt assembly hole 12: Floor mounting plate
20: upper base 21:
30: Lower guide block 31: Guide groove
32: through hole 40: upper guide block
41: Guide groove 42: Through hole
50: elastic body 51: core part
51A: hole 52:
52A: hole 60: through bolt
70: elastic spring 80A, 80B: auxiliary spring
90: Plate spring 100:
A: Slope B: Bolt
H: Through hole N1, N2: Nut
W: Washer

Claims (5)

A lower base 10 of a predetermined size fixedly installed on the floor;
An upper base 20 spaced apart from the upper base 10 by a predetermined distance;
A lower guide block 30 fixed to the upper surface of the lower base 10 and having an arc-shaped guide groove 31 formed in a horizontal direction on an upper surface thereof;
An upper guide block 40 fixed to the bottom surface of the upper base 20 and having a guide groove 41 formed in a horizontal direction perpendicular to the guide groove 31 on a bottom surface thereof;
A spherical elastic body 50 provided between the guide grooves 31 and 41;
A through bolt 60 of a predetermined length provided to penetrate the lower base 10, the lower guide block 30, the elastic body 50, the upper guide block 40 and the upper base 20 in order; And
An elastic spring 70 installed between the lower base 10 and the upper base 20 and having a predetermined diameter such that the lower guide block 30, the upper guide block 40 and the elastic body 50 are positioned inside;
/ RTI >
The elastic body (50)
A core portion 51 made of a hard rubber material having a hole 51A passing through the top and the bottom with a spherical shape; And
A surface layer portion 52 made of a soft rubber material and formed to surround the outer surface of the core portion 51 and formed with a hole 52A connected to the hole 51A and passing through the hole 51A;
And an earthquake-resistant device for earthquakes.
The method according to claim 1,
In the through bolt 60,
Further comprising auxiliary springs (80A, 80B) installed to be in close contact with one side of the lower base (10) and the upper base (20) and elastically supporting the auxiliary springs (80A, 80B).
delete The method according to claim 1,
Wherein a diameter of the surface layer portion (52) is formed in a ratio of 1: 1 to 0.5 with respect to the core portion (51).
The method according to claim 1,
The lower guide block 30 and the upper guide block 40 are connected to each other so that the lower guide block 30 and the upper guide block 40 are moved in accordance with the vibration, Further comprising a plate spring (90) for returning the installation position of the lower guide block (30) and the upper guide block (40).

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