KR101834473B1 - The Distribution Board With Vibration isolation and Earthquake-proof Device - Google Patents

Abstract

The present invention relates to a distribution board having a vibration isolation and earthquake-proof device. More specifically, the present invention relates to a distribution board having a vibration isolation and earthquake-proof device which can prevent the distribution board from twisting or tilting due to strong vibration or impact generated by crustal movement such as earthquake. The distribution board having a vibration isolation and earthquake-proof device according to the present invention comprises: a lower fixing plate; an upper driving plate; a steel ball; a coil spring; and a high pressure air spray part.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a distribution board with vibration isolating and earthquake-

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a switchboard having an isolation and an earthquake-proof device for attenuating vibration or shock transmitted from a ground on which an electric distribution board is installed, and more particularly, It is possible not only to prevent the switchboard from being twisted or tilted, but also to prevent the switchboard from being broken even when the switchboard is installed to stably supply electric power to various electric devices at a train station, a train station, a construction site, It is possible to prevent in advance connection failure or malfunction caused by weak vibration or shock repeatedly and continuously transmitted, and it is easy to manufacture, install and maintain due to simple construction of seismic isolation and earthquake resistance device, To prevent malfunction caused by dust, etc. attached to the seismic isolation device And an earthquake-proof device.

In general, switchgear is an electric facility that supplies industrial power to users safely. It is a device used to monitor, control, and protect electrical systems when power is supplied from power plants or substations to consumers.

Such a switchboard is composed of a structure for attaching and supporting unit devices such as a breaker or a protective relay, and a collection of conductors for connecting and connecting the unit devices, and these various electrical appliances are safely insulated and housed in a rectangular steel housing .

Various unit electrical equipments included in the enclosure of the switchboard are very vulnerable to vibration, so they should be designed to minimize vibration transmitted to the switchboard. However, Since it is not installed in seismic isolation and vibration proof design, there is a problem that the vibration transmitted from the outside is directly transmitted and shocked. In connection with the imposition of seismic and seismic design for power facilities, seismic and seismic design for transmission and distribution are essential .

As shown in FIG. 1, the upper plate 110, which is coupled to the lower surface of the housing of the cab of the switchgear, A spring plate 130, a support plate 140 and a ball 150 are stacked in a spaced space between the lower plate 120 and the lower plate 120 fixed to the mounting surface. In a normal state in which no earthquake occurs, The upper plate 110 and the lower plate 120 are tightly fixed to each other to fix and support the cabinet. When an earthquake occurs, the vacuum state of the space is released, and air The upper plate 110 and the lower plate 120 are separated from each other so that the upper plate 110 and the lower plate 120 are separated from each other by the spring 130 and the ball 150, Although it is configured to attenuate the transmission of one vibration,

There is a problem in that the apparatus is structured such that an expensive high-capacity air suction device is required to realize a vacuum state of the spacing space in which the upper plate 110 and the lower plate 120 are tightly fixed,

Even if the vacuum state of the spacing space is realized so that the upper plate 110 and the lower plate 120 can be tightly fixed to each other, And the lower plate 120, so that it is difficult to firmly support the enclosure of the server and the maintenance of the enclosure.

In order to solve this problem, as shown in FIG. 2, in a normal state in which no earthquake occurs, the lower air charging part 132 and the upper air charging part 132 And the lower plate 151 and the upper plate 154 are fixedly supported by filling the air charging part 152 with high pressure air so as to fix and support the plurality of elastic supporting parts 140 at the initial mounting positions And it is configured to maintain the original elasticity at the time of installation even when the earthquake is not generated for a long period of time and absorb the seismic waves smoothly when an earthquake occurs,

A large capacity compressor is continuously supplied to fill the lower air charging part 132 and the upper air charging part 152 with high pressure air so as to fix the lower plate 151 and the upper plate 154 in a normal state without an earthquake Therefore, there is a problem in that power consumption and maintenance cost for operation of the large capacity compressor are excessively large when the normal operation is continued for a long time, and a large number of movable balls 155 for the left and right vibration and shock absorption when a seismic wave occurs, There is a problem that the shape of the upper plate 154 supported by the ball and the structure of the center holding elastic body 160 are complicated and the manufacturing and maintenance are difficult. The elastic springs provided for absorbing the longitudinal impact can be prevented by a slight increase in load of the switchboard There are still closely fails to properly absorb longitudinal impacts issues.

Particularly, in the case where the vibration is attenuated by the left and right movements of the steel ball while supporting the upper plate with the steel ball interposed between the upper and lower plates as in the above-mentioned earthquake-proof apparatus, There is a problem in that the protrusion such as the surrounding dust or the iron powder adheres to the moving surface of the lower plate to obstruct the smooth movement of the steel ball so that the vibration damping effect is lowered and the steel ball splashes by the protrusion rather amplifies the vibration.

Patent No. 10-1011388 (entitled "Seismic Design Plate and Seismic Design Plate Switchgear") Patent No. 10-1341151 (entitled " Switchgear Equipped with Seismic Protection Device ")

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide an electrical switchboard installed at a place where constant vibration is repeatedly generated at normal times even when no earthquake occurs, such as at a train station, a train station, To minimize the internal connection failure or malfunction due to continuous vibration and to simplify the construction of seismic isolation and earthquake device, it is possible to reduce the manufacturing, installation and maintenance cost much more than conventional seismic and earthquake devices. In addition, even when the weight of the switchboard is increased due to the addition of new electronic devices, it is possible to prevent the elastic spring from coming into close contact with the switchboard,

Particularly, it is possible to prevent adhesion of protrusions such as surrounding dust or iron powder to the moving surfaces of the upper and lower plates in which the steel ball moves in the seismic system, so that the steel balls can be smoothly moved, So that the steel ball can be prevented from being amplified by the protrusion adhering to the moving surface, rather than being amplified.

According to one aspect of the present invention for solving the above-mentioned problems, there is provided an earthquake-proof and earthquake-proof earthquake-proof earthquake that is coupled to a lower surface of an enclosure of a switchboard, absorbs seismic waves flowing from an installation surface, A lower fixing plate having a lower coil spring receiving groove formed at a predetermined depth around the lower spherical surface groove, ; The lower fixing plate is spaced apart from the upper fixing plate by a predetermined distance. The upper portion is fixedly coupled to the lower surface of the cabinet, and the upper portion of the upper spherical groove is formed at the center of the lower surface, An upper movable plate having an upper coil spring seating groove at a predetermined depth; A steel ball interposed between the lower spherical surface groove and the upper spherical surface groove and formed to have a predetermined diameter so as to be movable along respective spherical surfaces of the lower spherical surface groove and the upper spherical surface groove; A coil spring having an upper end fixedly coupled to the upper coil spring seat of the upper movable plate and a lower end fixedly coupled to the lower coil spring seat of the lower fixed plate; And a high-pressure air injector for spraying high-pressure air toward a space between the lower fixing plate and the upper movable plate to remove fine dust and protrusions adhering to the spherical surfaces of the lower spherical groove and the upper spherical groove, respectively; And an earthquake-resistant device for earthquakes.

The present invention relates to an isolation board having an isolation and vibration isolation device according to one aspect of the present invention. The distribution board includes a high-pressure air injection unit, A protruding vacuum suction part for vacuuming fine dust and protrusion separated and separated from each of the spherical surfaces of the groove and the upper spherical groove; And further,

Preferably, the high-pressure air injection unit is capable of injecting high-pressure air with a pulse wave of a predetermined period.

The present invention relates to a distribution board having a seismic isolation apparatus and an earthquake-proof apparatus, and more particularly, to a distribution board installed at a place where constant vibration or impact is continuously generated even at normal times when no earthquake occurs, as in a train station, a train station, It is possible to minimize the internal connection failure or malfunction due to the continuous vibration and to simplify the construction of the seismic isolation and earthquake proofing equipment, thereby reducing the manufacturing, installation and maintenance costs. It is possible to prevent the elastic spring from coming into close contact even when the weight of the distribution board is increased,

Particularly, it is possible to prevent adhesion of protrusions such as surrounding dust or iron powder to the moving surfaces of the upper and lower plates in which the steel ball moves in the seismic system, so that the steel ball can be smoothly moved, And it is possible to prevent the vibration of the steel ball from being amplified while being jumped by the protrusion adhered to the moving surface.

1 is a sectional view showing a seismic resistant device provided in a conventional switchboard;
2 is a sectional view showing another seismic isolation device provided in a conventional switchboard;
3 is a cross-sectional view of an earthquake-proof and earthquake-proof apparatus provided in an enclosure of an ASSEMBLY in an ASSEMBLY with an earthquake-proof and earthquake-proof apparatus according to the present invention;
FIG. 4A is an operating state diagram schematically showing that an earthquake-proof and earthquake-resistant apparatus maintains a center when left and right rocking occurs in an electric distribution board having an earthquake-proof and earthquake-resistant apparatus according to the present invention;
FIG. 4B is an operating state diagram schematically showing an earthquake-proof and an earthquake-resistant apparatus centered on an upper and lower shaking of an A / D board equipped with an earthquake-proof and earthquake-resistant apparatus according to the present invention;
FIG. 5 is an operating state diagram showing removal of protrusions adhered to respective spherical surfaces of the upper and lower spherical grooves through air injected at a high pressure in the high-pressure air injecting portion in the switchboard having the seismic and vibration-proof device according to the present invention; And
6 is a sectional view of a distribution board having an isolation and vibration proof device according to an embodiment of the present invention. FIG. 6 is a cross- Fig.

Hereinafter, embodiments of the present invention in which the above object can be specifically realized will be described with reference to the accompanying drawings. In describing the embodiments, the same names are denoted by the same reference numerals, and further description thereof will be omitted below.

3 is a cross-sectional view showing an earthquake-proof and earthquake-proof apparatus 1 provided in an switchboard housing 11 in an earthquake-proof and earthquake-proof apparatus 1 according to the present invention, Fig. 4B is an operational state diagram schematically showing that the earthquake-proof and earthquake-proof apparatus 1 keeps its center when an earthquake-proof apparatus 1 is provided, Is an operating state diagram schematically showing that the earthquake-proof and earthquake-proof apparatus 1 keeps its center when an upside or downside rocking occurs.

5 is a cross-sectional view of an upper surface of the upper and lower spherical grooves 21 and 31 through the air injected at a high pressure from the high-pressure air injecting portion 60 in the distribution board having the seismic isolation device 1 according to the present invention. FIG. 6 is an explanatory view showing an operation state of the seismic isolation apparatus according to the present invention, in which the high pressure air spraying section 60 is provided with the air injected at high pressure, And the projections separated and separated on the respective spherical surfaces of the lower spherical grooves 21 and 31 are forcibly sucked and removed by the vacuum suction part 70. [

As shown in FIG. 3, the distribution board having the seismic isolation system according to the present invention includes a lower fixed plate (not shown) which is positioned below the seismic and earthquake-resistant apparatus 1 and whose lower surface is fixedly connected to the installation surface 10 An upper movable plate 30 provided at a position spaced upward from the lower fixed plate 20 and fixed to the lower surface of the cabinet 11, And a high pressure air spraying part 60 spaced apart from a space between the upper and lower plates 30 and 20 by a coil spring 50 and a steel ball 40 interposed between the upper and lower movable plates 20 and 20, .

As shown in FIG. 3, the lower fixing plate 20 is formed of a rectangular plate having a predetermined thickness. The lower fixing plate 20 is located on the lower side of the seismic isolation and vibration isolation device 1, A lower spherical surface groove 21 is formed at the center of the upper surface of the rectangular plate and a lower coil spring seat groove 22 is formed at a predetermined depth Respectively.

3, the upper movable plate 30 is formed as a rectangular plate having the same shape as that of the lower fixed plate 20 and is disposed at a position spaced upward from the lower fixed plate 20 by a predetermined distance The upper surface is fixedly coupled to the lower surface of the cabinet 11. The upper surface of the upper spherical groove 31 is formed at the center of the lower surface to face the lower spherical groove 21, The upper coil spring receiving groove 32 is provided at a predetermined depth along the periphery at a predetermined distance.

3, the steel ball 40 is formed of a sphere having a predetermined diameter and is interposed between the lower spherical surface groove 21 and the upper spherical surface groove 31 to form the lower spherical surface groove 21 4a and 4b, the steel ball 40 is moved by the frequent vibration transmitted from the mounting surface 10 to the lower side of the lower spherical groove 31, The center of the upper spherical groove 31 and the lower spherical groove 21 can be automatically moved and centered while moving along the spherical groove 21 and the upper spherical groove 31, 20 is restrained by the coil spring 50 and the switchboard housing 11 is returned to the original position through the steel ball 40. [

 This is because a pair of resilient springs are unnecessary compared with a conventional method of automatically moving the center of gravity by the elastic force of a pair of left and right resilient springs and thus the structure is simple, 4A and 4B, the steel ball 40 is continuously moved toward the center of the upper and lower spherical grooves 21 to center the ball, There is no fear of breakage compared with seismic and earthquake-proof devices, and there is an advantage that the durability is remarkably excellent.

3, the upper end of the coil spring 50 is fixedly coupled to the upper coil spring seat groove 32 of the upper movable plate 30, and the lower end of the coil spring 50 is fixed to the lower stationary plate 20, And is interposed between the lower fixing plate 20 and the upper movable plate 30. The steel ball 40 is located in a hollow space at the center of the lower coil spring.

4A and 4B, in the case of the seismic isolation system 1 according to the present invention, the longitudinal load of the distribution board is firmly supported through the steel ball 40, Even if the coil spring 50 and the steel ball 40 are used to reduce or attenuate impact or vibration and the load of the switchboard is increased by installing additional electronic devices in the switchboard after installation, It is possible to prevent the coil spring 50 from coming into close contact with and failing in function through the support of the steel ball 40 located at the center of the coil spring 50. The coil spring 50 can be easily The shock and vibration can be attenuated.

The coil spring 50 reduces the left, right, and up and down vibrations transmitted from the ground at the same time as the left, right, up and down movements, The center of gravity can be moved more easily and stably.

The steel ball 40 supports the upper movable plate 30 and the switchboard housing 11 in a state where the steel ball 40 is kept at the center while the initial stage of the coil spring 50 Only the steel ball 40 located at the center of the lower spherical groove 21 and the upper spherical groove 31 supports the upper movable plate 30 and the cabinet 11 without vibration, And is formed to have a predetermined length.

As described above, in the case of the seismic resistant device in which vibration is attenuated by interposing a steel ball between the upper and lower plates, there is an advantage in that the seismic and earthquake-proof effects are excellent even with a simple construction. However, Protrusions such as peripheral dust or iron powder are adhered to the moving surfaces of the upper and lower plates 30 and 20 and the protrusions adhered to the spheres obstruct the smooth movement of the steel balls to lower the vibration damping effect, ) Is projected by the projections, the vibration is amplified. In order to solve this problem, a method has been proposed in which a steel cloth around the steel ball around the steel ball is prevented from being attached to the moving surface of the steel ball 40. However, due to the characteristics of the seismic device being moved continuously for a long time, In addition, there is a problem that it is difficult to easily replace the seismic equipment installed on the bottom surface of the cabinet 11 of heavy equipment due to the wear and tear of the cabinet.

5, a high-pressure air spraying unit 60 for spraying high-pressure air at predetermined intervals toward the space between the lower fixing plate 20 and the upper processing plate 30 is provided So that fine dust and protrusions adhering to the respective spherical surfaces of the lower spherical groove 21 and the upper spherical groove 31 are removed.

Preferably, the high-pressure air injector 60 injects high-pressure air with a pulse wave of a predetermined period to form turbulent air waves on the spherical surfaces of the lower spherical groove 21 and the upper spherical groove 31, So that fine dust and protrusions attached to each spherical surface can be easily separated and separated.

6, at a position opposite to the high-pressure air injecting section 60, a space between the lower fixing plate 20 and the upper processing plate 30 at a predetermined distance from the space between the lower fixing plate 20 and the upper processing plate 30, (7), fine dust and protrusions separated and separated from the spherical surfaces of the lower spherical groove (21) and the upper spherical groove (31) by the high pressure air injected from the high-pressure air injector (60) So that fine dust and protrusion separated and separated from each spherical surface can be prevented from being attached to each spherical surface again.

As described above, the switchboard having the earthquake-proof and earthquake-proof apparatus 1 according to the present invention can be used not only when a strong earthquake occurs but also when the earthquake does not occur, such as at a train station, a train station, In the case of a switchboard installed in a place where shocks are generated, it is possible to minimize the occurrence of bad connections or malfunctions in the interior of the switchboard at any time by attenuating the effects of weak vibrations and shocks,

The construction of the seismic isolation and earthquake-proof apparatus 1 is simple and easy to manufacture, the durability is excellent, the installation and maintenance cost of the seismic isolation and earthquake proofing apparatus 1 can be remarkably reduced, Even when the weight of the switchboard is increased, it is possible to prevent the coil spring 50 from coming into close contact with each other,

In addition, it is possible to prevent the protrusions such as the surrounding dust or the iron powder from adhering to the moving surfaces of the upper and lower plates through which the steel balls in the seismic apparatus move, so that the steel ball can smoothly move and perform seismic and earthquake- The vibration damping effect at the time of installation can be maintained and it is possible to prevent the vibration of the steel ball from being amplified while bouncing by the protrusion adhering to the moving surface.

It is to be understood by those skilled in the art that the present invention may be embodied in many other forms without departing from the spirit and scope of the invention,

Accordingly, the above-described embodiments are to be considered illustrative and not restrictive, and all embodiments within the scope of the appended claims and their equivalents are intended to be included within the scope of the present invention.

1: Seismic isolation and seismic isolation
10: Mounting surface 11: Enclosure of switchboard
20: lower fixing plate 21: lower spherical surface groove
22: Lower coil spring seat groove 23: Lower steel spring stopper
24: Lower Urethane Pad
30: upper movable plate 31: upper spherical groove
32: upper coil spring seat groove 33: upper steel ball stopper
34: upper urethane pad
40: steel ball 50: coil spring
60: High-pressure air injection part 70:

Claims (3)

And an isolation and earthquake-proof device coupled to a lower surface of the cabinet of the cab for absorbing seismic waves introduced from the installation surface to attenuate transmission of vibration or shock of seismic waves to the cabinet,
A lower fixing plate having a lower surface fixedly coupled to the mounting surface, a lower spherical surface groove formed at the center of the upper surface, and a lower coil spring seating groove having a predetermined depth around the lower spherical surface groove;
The lower fixing plate is spaced apart from the upper fixing plate by a predetermined distance. The upper portion is fixedly coupled to the lower surface of the cabinet, and the upper portion of the upper spherical groove is formed at the center of the lower surface, An upper movable plate having an upper coil spring seating groove with a predetermined depth around the upper movable plate;
A steel ball interposed between the lower spherical surface groove and the upper spherical surface groove and formed to have a predetermined diameter so as to be movable along respective spherical surfaces of the lower spherical surface groove and the upper spherical surface groove;
A coil spring having an upper end fixedly coupled to the upper coil spring seat of the upper movable plate and a lower end fixedly coupled to the lower coil spring seat of the lower fixed plate; And
When high-pressure air is injected toward the spacing space between the lower fixing plate and the upper movable plate to remove fine dust and protrusions adhering to the spherical surfaces of the lower spherical groove and the upper spherical groove, A high pressure air jet portion for preventing splashing by the adhering fine dust and the protrusion; ≪ / RTI >

And the fine dust and protrusions separated and separated from the spherical surfaces of the lower spherical groove and the upper spherical groove due to the high-pressure air injected from the high-pressure air injecting portion are separated from the high- A suction inhaling vacuum suction part; Further comprising:

The high-pressure air-
And the high-pressure air is injected by a pulse wave of a predetermined period.





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