KR101781131B1 - Distribution board with function rolling type earthquake proof - Google Patents

Abstract

The present invention relates to a switchgear having a rolling type earthquake-proof function, and more particularly, to a switchgear having a rolling type earthquake-proof function which includes a rolling type horizontal vibration damping unit having a steel ball between upper and lower rolling tables, and is capable of maintaining the state where the upper rolling table and the steel ball are in contact with each other even under vertical vibration. To this end, the switchgear having a rolling type earthquake-proof function of the present invention comprises a switchgear box and an earthquake-proof device. The earthquake-proof device includes: an upper plate installed at a lower portion of the switchgear box; a lower plate corresponding to the upper plate, and fixed to a bottom portion; and a horizontal vibration damping unit installed between the upper and lower plates. The horizontal vibration damping unit includes: a lower block installed on the lower plate, and having a first rolling groove having a ball shape at a center portion thereof; an upper block installed on the upper plate, configured to correspond to the lower block, and having a second rolling groove corresponding to the first rolling groove; and a steel ball installed between the first rolling groove of the lower block and the second rolling groove of the upper block, and allowing the lower and upper blocks to be spaced apart from each other by a predetermined interval, and being in rolling-contact with each other.

Description

{DISTRIBUTION BOARD WITH FUNCTION ROLLING TYPE EARTHQUAKE PROOF}

[0001] The present invention relates to a power transmission system having a seismic function of a rolling type. More particularly, the present invention relates to a power transmission system including a rolling type horizontal vibration damping unit having a steel ball between an upper rolling table and a lower rolling table, And an earthquake-resistant function of a rolling system capable of maintaining a state in which the steel ball is in contact with the steel plate.

The switchboard is a device used to monitor, control and protect the power system. It is a collection of unit devices, supporting structures and wires for connecting them. Lt; / RTI >

If vibration or shock is applied to the switchboard due to external factors such as earthquake fluctuation or explosion, electric parts such as internal power devices, wiring and protective relay of the control panel may be damaged. There is a risk of interruption or fire.

The collapse of a building caused by natural disasters such as earthquakes, typhoons and tsunamis, which are becoming frequent in recent years, and the economic loss caused by the collapse of the buildings are increasing. It is considered important to secure the safety of the building, In order to minimize the problems such as interruption of power supply and economic loss due to breakage, seismic design standards are being strengthened.

Japanese Patent Application Laid-Open No. 10-1633921 discloses a switchboard having a triaxial twisted earthquake-resistant device.

The above-described technique includes: an enclosure fastening plate fastened to the lower half of the enclosure; A spring disposed between the enclosure fastening plate and the rotary plate for absorbing vibration; A rotating plate coupled to a lower end of the spring; A link coupled to the enclosure fastening portion and the rotating plate and having a shock absorber; A bearing for smoothly rotating the rotary plate; And a bottom surface coupling plate for supporting the bearing, wherein an end of the rotation shaft is hemispherical, a groove of the bottom surface coupling plate is hemispherical in shape to mate with the rotation shaft, and the link is fastened in an inclined direction to the rotation plate .

However, since the above-described technique is constituted by a hemispherical shape provided on a rotary shaft and a hemispherical shape corresponding thereto, horizontal vibration can not be absorbed, and thus there is a problem in that it is vulnerable to an earthquake of horizontal vibration.

In addition, in No. 10-1690087, a power transmission and distribution panel having an earthquake-proof function is disclosed. The above-described technique includes a power distribution device including a lead-in socket into which power is drawn, a distribution socket through which power drawn from the lead-in socket is distributed, and a lead-in cord coupled to the lead-in socket. And a distribution cord connected to the distribution socket, the distributor wiring for distributing the power distributed to the power distribution device to the outside, the water distribution housing for covering and protecting the water distribution device, An earthquake-resistant support portion including an earthquake-proof spring for separating the power distribution housing from the floor and preventing a shock generated by the earthquake from being transmitted to the water power distribution apparatus; In response to the difference in vibration between the housing and the bottom of the power distribution housing due to the earthquake-proof supporting portion when an earthquake occurs, An inlet separator for separating the inlet socket from the inlet inlet cord and a partition wall for supporting the distribution cord from the bottom through the bottom of the water inlet and outlet housing, And a distribution separator for separating the distribution socket from the distribution code according to a difference between the distribution sockets.

However, the above-described technique can prevent the occurrence of electric fires by separating the incoming or outgoing lines artificially when the earthquake having the vertical vibration occurs in the transmission / distribution panel, but since only the earthquake-proof spring for absorbing the vertical vibration is provided, Problems arise.

KR 10-1633921 B1 (June 26, 2016) KR 10-1690087 B1 (Dec. 21, 2016)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the prior art described above, and it is an object of the present invention to provide a rolling-type seismic safety device capable of simultaneously coping with horizontal and vertical vibrations, The present invention is directed to providing a wired /

In order to solve the above-mentioned problems, the present invention provides a power transmission system having a seismic isolation function of a rolling type, comprising: an upper plate mounted on a lower portion of the cabinet; A lower plate corresponding to the upper plate and fixed to the bottom portion; And a horizontal vibration damping portion installed between the upper plate and the lower plate, wherein the horizontal vibration damping portion is provided on the lower plate and has a ball-shaped first rolling groove at its center portion; An upper block provided on the upper plate and corresponding to the lower block and having a second rolling groove corresponding to the first rolling groove; And a steel ball which is installed between the first rolling groove of the lower block and the second rolling groove of the upper block and separates the lower block and the upper block at a predetermined interval to make rolling contact. do.

The vertical vibration damping unit may include a first bracket installed on the lower plate, and a second bracket installed on the upper plate. The vertical vibration damping unit may be disposed between the upper plate and the lower plate, And is hinged so as to be hinged between the second brackets.

The vertical vibration damping unit may include a cylindrical cylinder; A rod installed in the cylinder so as to be capable of being drawn out and drawn in; And an elastic spring installed inside the cylinder and having one end fixed to the inside of the cylinder and the other end connected to one end of the rod.

A first joint provided between the cylinder and the first bracket so as to be capable of biaxial rotational movement; And a second joint provided between the rod and the second bracket so as to be capable of biaxial rotational movement.

In addition, the lower block is configured to be vertically moved by the guide of the guide housing, and a contact spring for elastically supporting the lower block to the upper side is provided at a lower portion thereof.

According to the present invention, there is an advantage that the horizontal vibration damping portion of the rolling type absorbs the horizontal vibration, and the vertical vibration damping portion provided between the upper plate and the lower plate absorbs the vertical vibrations, thereby simultaneously coping with vertical vibration and horizontal vibration.

Further, when the upper block and the steel ball are held in contact with each other during the vertical vibration, there is an advantage that the displacement difference between the upper block and the lower block can be prevented.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a front view of a power transmission system equipped with a vibration-proof seismic function according to the present invention; Fig.
2 is an exploded perspective view of a seismic system applied to a switchboard having a seismic resistant function of a rolling system according to the present invention.
3 is a cross-sectional view of a horizontal vibration damping unit applied to a switchboard provided with a vibration damping function according to the present invention.
4 is a view showing an operation state of a horizontal vibration damping unit applied to a switchboard provided with a vibration damping function according to the present invention.
5 is an installation cross-sectional view of a vertical vibration damping portion applied to a switchboard provided with a vibration damping function according to the present invention.
FIG. 6 is a perspective view of a vertical vibration damping unit applied to a switchboard having a vibration damping function according to the present invention. FIG.

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

[0001] The present invention relates to a power transmission system having a seismic function of a rolling type. More particularly, the present invention relates to a power transmission system including a rolling type horizontal vibration damping unit having a steel ball between an upper rolling table and a lower rolling table, And an earthquake-resistant function of a rolling system capable of maintaining a state in which the steel ball is in contact with the steel plate.

FIG. 1 is a front view of a switchboard with a rolling-type earthquake-proof function according to the present invention.

Referring to FIG. 1, a switchboard with a rolling-type earthquake-proof function according to the present invention includes a switchboard housing 1 and a rolling-type earthquake-proof apparatus 2 for distributing input power and outputting the input power.

The switchgear housing (1) variably distributes the received electric power to supply electric power, and has a plurality of divided spaces, and doors are provided on one side or both sides thereof, and the internal space is provided with a malfunction automatic switch , A transformer, a circuit breaker, a circuit breaker, a power fuse, a lightning arrester, a transformer for a meter, and a power factor control device.

At this time, the interior of the switchboard can be partitioned into partition walls having a predetermined thickness so as to distinguish the high-pressure side from the low-pressure side, and the wall can be formed so as to reduce noise by using the high-sound-absorption heat insulating material.

FIG. 2 is an exploded perspective view of a seismic system applied to a switchboard having a rolling-type seismic function according to the present invention.

2, the seismic isolation device 2 minimizes the transmission of seismic waves to the housing 1 when an earthquake or the like occurs. The rolling system is adopted and applied to the upper plate 10, the lower plate 10, (20), a horizontal vibration damping unit (30) and a vertical vibration damping unit (40).

The upper plate 10 is installed at a lower portion of the cabinet 1 to support the bottom surface of the cabinet 1.

The lower plate 20 corresponds to the upper plate 10 and is fixedly installed at the bottom.

At this time, the lower plate 20 may be fixed to the floor using a binding member such as an anchor for coupling with the bottom portion.

The upper plate 10 and the lower plate 20 may have openings 11 and 21, respectively.

The openings 11 and 21 reduce the weight of the upper plate 10 and the lower plate 20 and reduce the weight of the upper plate 10 and the lower plate 20 during the process of disposing the upper plate 10 on the upper plate 20. [ Is used to identify the point of contact of the lower plate (20).

The horizontal vibration damping unit 30 is provided between the upper plate 10 and the lower plate 20 to damp the horizontal vibration when an earthquake occurs.

A plurality of the horizontal vibration dampers 30 may be provided on the upper plate 10 and the lower plate 20 but may be provided on the outer side of the upper plate 10 and the lower plate 20, It can be installed on the corner side. Depending on the design conditions, the larger the scale of the switchgear housing 1, the more one or more, for example, 1 to 4, can be arranged inside.

FIG. 3 is a cross-sectional view of a horizontal vibration damping unit applied to a switchboard having a vibration-type earthquake-proof function according to the present invention, and FIG. 4 is a diagram illustrating an operation state of a horizontal vibration damping unit.

3, the horizontal vibration damping unit 30 includes a lower block 31 mounted on the lower plate 20 and having a ball-shaped first rolling groove 31a at its center, An upper block 32 and a lower block 31 which are installed in the upper block 10 and correspond to the lower block 20 and have a second rolling groove 32a corresponding to the first rolling groove 31a, And the lower block 20 and the upper block 10 are spaced apart from each other by a predetermined distance so as to be in rolling contact with each other. And a steel ball (33).

The first rolling groove 31a and the second rolling groove 32a each have a concave spherical surface having a predetermined inclination toward the central portion. When the steel ball 33 is freely moved, And is moved to the center of the rolling groove 31a (or the second rolling groove 32a).

In this configuration, when horizontal vibration occurs due to the occurrence of an earthquake, the lower block 31 is horizontally moved as shown in FIG. 4 (a). In this process, the steel ball 33 rotates between the first rolling groove 31a and the second rolling groove 32a, so that the upper plate 10 is not horizontally moved but only a predetermined height is changed. 4 (a), only the vibration transmitted to the left is shown, but the vibrations transmitted to the right and the vibrations transmitted to the front and rear are also operated by the same operation, so that the switchgear housing 1 disposed at the upper portion of the upper plate 10, Is minimized.

Here, the seismic waves will be described.

When an earthquake occurs, earthquake energy is transmitted as a seismic wave, which is classified as body waves transmitted through the earth and surface waves transmitted through the earth's surface.

The fundamental waves have primary waves and S-waves (secondary waves), and surface waves are classified as Love waves and Rayleigh waves.

The P-wave is first transmitted because it is the fastest (5 ~ 7km / s) among the seismic waves. It is also called compressional waves because it compresses the medium along the propagation direction like sound waves and then expands. It can be passed through a liquid layer such as solid rock as solid rock as well as the outer core in molten state. However, since the amplitude is small, it does not cause damage and is generally not recognized by a person.

The S-wave is 60% of the P-wave velocity (3 ~ 4km / s) and is called secondary waves, but it is faster than the L-wave or R-wave. It is also referred to as shear waves because it propagates in a direction perpendicular to the direction of propagation. Unlike the P-wave, it does not pass through the liquid layer, but it has a large amplitude and causes damage.

The surface waves are lower in frequency and slower than the actual waves, but suffer the greatest earthquake damage. However, as the epicenter deepens, the intensity of the surface waves decreases.

Love waves are shaken like a snake on the surface of the earth. The seismograph system records only the horizontal component without any vertical component.

The Rayleigh wave rotates like a wave in the sea or lake, shaking the surface up and down and side to side, causing the greatest damage to the seismic waves.

That is, in the case of a transmitted seismic wave, not only one selected from the horizontal vibration or the vertical vibration is transmitted, but the horizontal vibration and the vertical vibration are transmitted in a complex manner.

The steel ball 33 can be temporarily spaced apart from the spherical surface of the second rolling groove 32a of the upper block 32 when the horizontal vibration and the vertical vibration are simultaneously transmitted to the power transmission / When the steel ball 33 is temporarily spaced from the spherical surface of the second rolling groove 32a in the process, the steel ball 33 is free to roll in the first rolling groove 31a and the center of the first rolling groove 31a And the center portion of the second rolling groove 32a are displaced from each other. Also, the steel ball 33 is placed at a position shifted from the center of the first rolling groove 31a and the center of the second rolling groove 32a.

Accordingly, even when the horizontal vibration and the vertical vibration are transmitted in a complex manner, the steel ball 33 must remain in contact with the spherical surface of the second rolling groove 32a at all times.

Therefore, in order to keep the spherical surfaces of the steel ball 33 and the second rolling groove 32a always in contact with each other, the lower block 31 is moved upward and downward by the guidance of the guide housing 34, And a contact spring 35 for elastically supporting the lower block 31 to the upper side may be provided at a lower portion of the lower block 31.

3, when the upper block 32 presses the steel ball 33 and the steel ball 33 presses the lower block 31 depending on the weight of the switchboard housing 1, The lower portion of the lower block 31 is kept in contact with the upper surface of the lower plate 20 as shown in FIG. In this state, when the vertical vibration is transmitted to the switchgear due to the occurrence of an earthquake, the lower plate 20 pushes up the lower block due to the rising vibration of the vertical vibration, 35 temporarily push up the lower block, so that the steel ball 33 remains in contact with the spherical surface of the second rolling groove 32a.

Accordingly, since the upper block and the steel ball are kept in contact with each other during the vertical vibration, the displacement of the upper block and the lower block is prevented, so that the horizontal vibration and the combined vibration accompanying the vertical vibration can absorb the horizontal vibration with the same displacement There is an advantage.

The lower block 31 and the upper block 32 are spaced apart from each other by the steel ball 33. The foreign matter such as dust is normally separated from the lower block 31 and the upper block 32 So that it can be stacked on the first rolling groove 31a of the lower block 31. As shown in FIG. In order to prevent this, an anti-vibration solenoid 36 may be installed on the outer side of the first rolling groove 31a and formed in a circumferential direction and protruding upward.

Although not shown in the drawing, the anti-vibration soles 36 may be installed in the upper block 32, and the lower blocks and the upper blocks 36 may be formed in accordance with design conditions. It can be installed in all.

On the other hand, the horizontal vibration damping unit 30 can minimize horizontal vibration transmitted to the cabinet 1, but can not absorb vertical vibration.

Accordingly, in the present invention, the vertical vibration damping unit 40 is provided as a structure for absorbing the vertical vibration.

The vertical vibration damping part 40 is provided between the upper plate 10 and the lower plate 20 to elastically support the upper plate 10. And FIG. 6 is a perspective view of a vertical vibration damping portion. [FIG. 6] FIG. 6 is a perspective view of a vertical vibration damping portion. [FIG. 6] FIG.

5 and 6, the vertical vibration damping part 40 includes a first bracket 22 mounted on the lower plate 20 and a second bracket 12 mounted on the upper plate 10, As shown in Fig.

At this time, the vertical vibration damping part 40 may be inclined, and the inclination angle may be different depending on the distance between the lower plate 20 and the upper plate 10. [

The structure of the vertical vibration damping unit 40 includes a cylindrical cylinder 41 and a rod 42 installed to allow the cylinder 41 to be drawn out and drawn in from the cylinder 41. The vertical vibration damping unit 40 is installed inside the cylinder 41, And an elastic spring 43 fixed to the inside of the cylinder 41 and connected to one end of the rod 42 at the other end.

In this case, the vertical vibration damping unit 40 has to have left and right predetermined clearances in order to respond to the horizontal vibration as well as the vertical vibration corresponding to the love waves and the Rayleigh waves of the seismic waves.

Joints 44 and 45 capable of biaxial motion are provided between the first bracket 22 and the second bracket 12 connected to each of the vertical vibration damping portions 40. [

That is, the first joint 44 is provided between the cylinder 41 and the first bracket 22 to enable biaxial rotation, and the second joint 45 is provided between the rod 42 and the first bracket 22, 2 bracket 12 so as to be able to rotate in two directions.

The elastic spring 43 is installed in a tensioned state in accordance with the installation of the first joint 44 and the second joint 45 so that tension is applied to the first bracket 22 and the second bracket 12 .

Here, the vertical vibration damping units 40 may be symmetrically installed in pairs, and a plurality of vertical vibration damping units 40 may be provided to balance the front, rear, left, and right.

As the elastic spring 43 is positioned inside the cylinder 41, the elastic spring 43 can be protected from an external impact, and it is possible to flexibly cope with the vertical vibration and the horizontal vibration by the structure of the joint .

According to the present invention, the horizontal vibration damping portion of the rolling type absorbs horizontal vibration by the horizontal vibration, and the vertical vibration damping portion installed between the upper plate and the lower plate absorbs the vertical vibration, There is an advantage to cope.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

1: Switchboard enclosure 2: Seismic device
10: upper plate 11, 21: opening
12: second bracket 20: bottom plate
22: first bracket 30: horizontal vibration damping portion
31: Lower block 31a: First rolling groove
32: upper block 32a: second rolling groove
33: steel ball 34: guide housing
35: contact spring 36:
40: vertical vibration damping portion
41: cylinder 42: rod
43: elastic spring 44: first joint
45: second joint

Claims (5)

In a switchboard including a switchboard enclosure and an earthquake-resistant device,
The earthquake-
An upper plate installed at a lower portion of the switchgear housing; A lower plate corresponding to the upper plate and fixed to the bottom portion; A plurality of horizontal vibration dampers disposed between the upper plate and the lower plate; And a vertical vibration damping portion installed between the upper plate and the lower plate and elastically supporting the upper plate,
Wherein the horizontal vibration damping unit comprises:
A lower block mounted on the lower plate and having a ball-shaped first rolling groove at a center thereof;
An upper block provided on the upper plate and corresponding to the lower block and having a second rolling groove corresponding to the first rolling groove;
A steel ball installed between the first rolling groove of the lower block and the second rolling groove of the upper block to separate the lower block and the upper block at a predetermined interval and make rolling contact with each other;
And,
Wherein the vertical vibration damping unit comprises:
A cylindrical cylinder;
A rod installed in the cylinder so as to be capable of being drawn out and drawn in;
An elastic spring installed inside the cylinder, one end fixed to the inside of the cylinder and the other end connected to one end of the rod;
A first joint provided between the cylinder and the first bracket so as to be capable of biaxial rotational movement; And
A second joint provided between the rod and the second bracket so as to be able to rotate in two directions;
And,
Wherein the vertical vibration damping portion is inclined so as to be hingable between the first bracket installed on the lower block and the second bracket installed on the upper block,
The lower block is configured to be vertically moved by the guide of the guide housing, and a contact spring for elastically supporting the lower block to the upper side is provided at a lower portion thereof,
Each of the upper plate and the lower plate is provided with an opening,
Wherein the first rolling groove is formed at an outer side of the first rolling groove in a circumferential direction and protrudes to an upper side and is provided with a dustproof brush having a plurality of flexible brushes,
Wherein the elastic spring is installed in a tensioned state according to the installation of the first joint and the second joint so that tension is applied to the first bracket and the second bracket,
Wherein the vertical vibration damping units are symmetrically paired to the left and right, and a plurality of vertical vibration damping units are provided so as to balance the front, rear, left, and right sides.
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