KR101956274B1 - Earthquake-proof device for switchboard that can adjust support force by load - Google Patents

Abstract

Disclosed is an earthquake-proof device for switchgear. According to the present invention, the earthquake-proof device for switchgear comprises a lower block, an upper block, a plurality of earthquake-proof coils, an urethane buffer block, an adjusting pin, and an adjusting bolt. The earthquake-proof device for switchgear is installed after a change in an exposure length of the earthquake-proof coil caused by a vibration is prevented.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an earthquake-resistant seismic isolation system,

More particularly, the present invention relates to an earthquake-resistant apparatus for earthquake-resistant buildings, which is installed between a floor of a power plant and a power plant for minimizing damages caused by natural disasters such as earthquakes and typhoons by absorbing and damping vibrations and shocks applied to the power- ≪ / RTI >

Generally, the switchgear receives high-voltage power transmitted from a power plant, and distributes it to various facilities after lowering it to a low-voltage commercial voltage. It includes power receiving facilities, substation facilities, distribution facilities, switchgear control facilities, and motor control facilities .

As is well known, the switchboard is divided into outdoor use and indoor use. The outdoor use is installed by placing it with concrete along with the buffer pad to protect it from natural disasters such as earthquake or flood, and is installed to be spaced apart from the ground to prevent electric leakage and electric shock due to flooding.

On the other hand, natural disasters such as earthquakes and typhoons, which are becoming more frequent in recent years, are leading to the collapse of structures and the resulting economic losses. As a result, efforts are being made to secure the stability of structures throughout the world.

Especially, large buildings such as power plants and bridges and large buildings such as high - rise buildings can be accompanied by huge loss of life and economic loss in destruction. Therefore, seismic design standards for these buildings are strengthened in Korea.

If the intensity of the earthquake is below a certain level, even if the building itself is sound due to the vibration of the building, various electric devices and objects therein may fall over or collide with each other and be damaged. Particularly, since the middle and large-sized electric devices such as the control panel are made of electrical parts such as control circuits, devices, and switches that are vulnerable to external vibration, mechanical structural strength is very weak.

As a conventional technique for solving the above-mentioned problem, a " discharge guard for a power distribution panel " of Korean Patent Registration No. 1100147 is known, and a representative drawing of this patent is shown in Fig. FIG. 1 is a perspective view of a discharge guard for a switchboard according to the prior art. FIG.

1, a plurality of dustproof wires 1 are installed on the dustproof partition plates 2 and 3, and a leveler 4 is provided between the dustproof partition plates 2 and 3, respectively. In this case, the number of the coil springs 5 of the leveler 4 is adjusted to adjust the supporting force of the discharge port.

However, such an anti-vibration gear has a problem that the leveler 4 is composed of the anti-vibration rubber and the coil spring 5, which is complicated in construction. Because of the factors such as the type and the characteristics of the anti-vibration rubber, It is noted in the patent that there is a drawback that it takes a lot of time.

In addition, various facilities including switchboards vary in size and weight, and the weight of each facility varies depending on the location. Accordingly, in order to apply the vibration proofing to each of these facilities, it is necessary to apply the different number of the coil springs 5 after measuring the load of each corner portion of each equipment according to the type of the facility, There is also.

In addition, in the conventional anti-vibration spoiler, when the weight of the equipment to which the dust-proof spoons are applied is relatively light or very heavy due to the adjustment of the supporting force by the number of the coil springs 5, There is a problem that a jig is to be produced separately. That is, when the conventional anti-vibration springs are manufactured in a single standard, there is a problem that the support force can not be adjusted separately except the number of the coil springs 5 to adjust the support force.

(0001) Korea Patent No. 10-1653703 (Publication date: 2016.09.02)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a seismic isolation system for a switchgear which is capable of earthquake-proof by a shock absorbing action even under vibration or shock generated by an earthquake.

Another object of the present invention is to provide a seismic isolation system for a power and control system in which the bearing capacity of the seismic system installed at each corner can be easily adjusted when the load of each corner of the power system is different.

According to the present invention, there is provided an earthquake-proof apparatus in which a bearing force is adjusted so as to correspond to a load of each corner of a power-transmission-and-distribution panel in order to enable earthquake- And a second lower panel coupled to the lower panel and the first lower panel, wherein the coil insertion holes are formed at equal intervals along both longitudinal sides of the coil insertion hole; and a coil insertion hole A lower block coupled to an upper surface of the base panel fixed to the floor by a first bolt, the lower block being provided with a fastening hole for fixing the adjustment bolt insertion hole and the second lower panel which is in contact with the first lower panel; The first and second upper panels corresponding to the first lower panel and the second lower panel and having the same structure as the lower block and being fixedly installed through the third bolt on the bottom surface of the cabinet, An upper block; A plurality of earthquake-resistant coils each having a U-shaped structure, both ends of which are inserted into coil insertion grooves formed in the lower block and the upper block, respectively, and 'T' shaped adjustment pin insertion grooves are formed at both ends; A urethane buffer block provided between the lower block and the upper block and inside the anti-resonance coil; A plurality of gears are formed on the inner surface of the other end of the adjustable pin insertion groove, and the other end of the gear is inserted into the adjustment pin insertion groove, And a regulating pin having a protruding stopper protruding outwardly of a larger size than a gear in a gear forming direction; And seismic coils which are inserted into the adjustment bolt insertion grooves and engaged with gears formed on the adjustment pins coupled to the respective earthquake coils inside the lower block and the upper block to be exposed to the outside of the lower block and the upper block by rotation, And an adjusting bolt for varying the length of the upper and lower blocks and the adjusting bolt so that the length of the upper and lower blocks is variable, And a bolt coupled to the fastening hole of the fastening hole of the fastening hole of the fastening hole of the fastening hole of the fastening hole of the fastening hole.

The present invention can prevent the earthquake-proof damage such as the transmission and the trembling by the double buffering action of the earthquake-proof coil and the urethane buffer block constituting the earthquake-proof device even in the case of external vibration or impact, It is possible to prevent damage such as power outage and fire which may occur due to the flow of various components.

In addition, vibration caused by an earthquake or the like is canceled by the same magnitude due to a plurality of earthquake coils installed at regular intervals, and vibration can be dispersed evenly.

In addition, since the holding force of the earthquake-proof apparatus can be adjusted to a wide range by adjusting the length of the earthquake-proof coil of the earthquake-proof apparatus by the adjustment bolt, the standard of the earthquake-proof apparatus can be standardized, So that it is possible to appropriately perform the buffering action according to the edge-by-edge load.

1 is a perspective view of a dustproof box for a switchboard according to the prior art.
2 is a front view showing a seismic isolation system for a switchgear according to the present invention.
3 is a perspective view of the seismic system of Fig.
4 is an exploded perspective view of the seismic system shown in Fig.
5 is a cross-sectional view illustrating a state in which the length of the earthquake coil is adjusted according to the adjustment bolt of the seismic system shown in FIG.
FIG. 6 is a view showing the earthquake-proof operation of a switchboard through a seismic system for a switchgear according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following detailed description of the operation principle of the preferred embodiment of the present invention, if it is determined that a detailed description of known functions or configurations related to the related art may unnecessarily obscure the gist of the present invention, do.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference numerals refer to like elements throughout.

2 is a front view showing a seismic isolation system for a switchgear according to the present invention. 3 is a perspective view of the seismic system of Fig. 4 is an exploded perspective view of the seismic system shown in Fig. 5 is a cross-sectional view illustrating a state in which the length of the earthquake coil is adjusted according to the adjustment bolt of the seismic system shown in FIG.

2 to 5, the present invention relates to an earthquake-resistant apparatus for a switchboard installed in a switchboard to prevent collapse and breakage of a switchboard by absorbing vibrations. The earthquake-proof apparatus 100 according to the present invention includes a base panel 10 A lower block 20, an upper block 30, an adjustment bolt 40, a vibration-proof coil 50, and a urethane buffer block 60. [

The base panel 10 is a base plate coupled to a bottom surface S on which a switchboard is installed and the base panel 10 includes a first bolt 11 Lt; / RTI > In this case, various bolts are applied to the first bolt 11 in the form of an anchor bolt when the floor is made of concrete and the bottom of the non-concrete foundation floor in the building, (S).

The lower block 20 is coupled to the upper surface of the base panel 10 by a second bolt (not shown). In this embodiment, the lower block 20 is coupled with the base panel 10 through the second bolt However, the present invention is not limited to this configuration, and any structure for coupling the lower block 20 and the base panel 10 is possible. The lower block 20 may be formed of a pair of lower panels 21 and 22 and an adjustment bolt 40.

The lower panels 21 and 22 are composed of a first lower panel 21 and a second lower panel 22 which are butt-coupled to face each other and have the same structure. In the first lower panel 21, a coupling hole 21a for coupling with the second bolt is formed, while a coupling hole 21a for coupling with the second bolt is formed in the second lower panel 22 There is a difference only in the absence of. Accordingly, the first lower panel 21 will be mainly described below.

A plurality of coupling holes 21a for coupling with the base panel 10 and the second bolt are formed at predetermined positions in the first lower panel 21 and a coupling hole 21b for fastening the second lower panel with the bolts, A plurality of these are formed at predetermined positions. A coil insertion groove 21c for inserting one end of the earthquake coil 50 in the width direction is formed on the upper surface and an adjustment bolt insertion groove 21d for inserting the adjustment bolt 40 Is formed.

The coil insertion groove 21c is a groove into which one end of the vibration-proof coil 50 is inserted, and is formed in the first lower panel 21 in a semicircular shape. The lower block 20 is formed with a coil insertion hole into which one end of the earthquake coil 50 is inserted but the lower block 20 is composed of the first and second lower panels 21 and 22, 21, a semi-circular coil insertion groove 21c is formed. The coil insertion grooves 21c are formed in the width direction of the first lower panel 21 and are spaced a predetermined distance in the longitudinal direction of the first lower panel 21 by the number of the vibration-proofing coils 50,

The adjustment bolt insertion groove 21d is formed in the longitudinal center of the first lower panel 21 with a groove into which the adjustment bolt 40 is inserted. At this time, the lower block 20 has the adjustment bolt insertion hole into which the adjustment bolt 40 is inserted. However, since the lower block is composed of the first and second lower panels 21 and 22, A semicircular adjustment bolt insertion groove 21d is formed. The adjustment bolt insertion groove 21d is formed so as to communicate with the coil insertion groove 21c in a structure corresponding to the outer diameter of the adjustment bolt 40 like the earthquake coil insertion groove 21c, Take it.

The adjustment bolt 40 includes a body portion 41 inserted into the adjustment bolt insertion groove 21d and not exposed to the outside, a head portion 42 positioned on the longitudinal side surface of the lower block 20 and exposed to the outside, As shown in FIG. At this time, the body portion 41 is formed to have a cylindrical shape and a length corresponding to the length of the adjusting bolt insertion groove 21d (which may be somewhat shorter), and a plurality of gears are formed along the longitudinal direction on the outer peripheral surface, And a gear type structure is taken. The head portion 42 is formed on both sides of the body portion 41 and is formed in a hexagonal shape so that the body portion 41 can be rotated by a tool exposed in the longitudinal side surface of the lower block 20 Grooves such as '+' and '-' may be formed. The diameter of the head portion 42 may be larger than that of the adjustment bolt insertion hole. The adjustment bolt 40 is prevented from being separated from the lower block 20 by the head portion 42 and the adjustment bolt 40 is prevented from being separated from the lower block 20, (50) can be prevented from departing from the lower block (20).

The upper block 30 is coupled to the lower surface of the cabinet P via the third bolt 31 while being spaced apart from the lower block 20. In this embodiment, the upper block 30 is coupled with the enclosure P of the switchboard through the third bolts 31. However, the present invention is not limited to this configuration. The upper block 30 and the enclosure P) is possible.

The upper block 30 is formed of a pair of upper panels 31, 32 and an adjustment bolt 40. At this time, the upper block 30 has the same structure as the lower block 20 described above, and the coil insertion holes and the adjustment bolt insertion holes are formed. That is, the upper block 30 includes first and second upper panels 31 and 32, which are formed in the same structure as the first and second lower panels 21 and 22. Also, the adjustment bolt 40 formed in the upper block 30 is formed in the same manner as the adjustment bolt 40 formed in the lower block 20. Accordingly, the detailed description related to the upper block 30 will be omitted because it can be substituted for the description of the lower block 20 described above.

The earthquake-resistant coil 50 is made of a material having a predetermined rigidity, and a plurality of the earthquake-resistant coils 50 are installed at equal intervals in order to evenly disperse the vibrations when vibrations due to earthquakes or the like occur on the left or right.

The vibration-proof coil 50 is formed in a U-shape and is coupled to a coil insertion hole formed in the lower block 20 and the upper block 30, respectively. In addition, a T-shaped adjustment pin insertion groove is formed at the end of the vibration-proof coil 50, and the adjustment pin 51 is coupled with the adjustment bolt 40 in the adjustment insertion groove.

The other end of the adjusting pin 52 is protruded from the end of the earthquake coil 50 in a state where the adjusting pin 52 is firmly coupled to the adjusting pin inserting groove 51 of the earthquake coil 50, T "shape corresponding to the adjustment pin insertion groove 51. When the adjustment pin insertion groove 51 is engaged with the main body 41, the upper surface of the T- As shown in Fig.

A stopper 54 protruding more than the gear 53 in the same direction as the gear teeth 53 and the gear teeth 53 is formed on the other side of the adjustment bolt 40 which is to be meshed with the body portion 41 . The gear teeth 53 formed on the other side of the adjusting pin 51 may have a width of the lower block 20 or the upper block 30 so as to be interlocked with gears formed on the body 41 of the adjusting bolt 40. [ A plurality of spacers are formed. The stopper 54 is formed at the other end of the adjusting pin 52 on which the gear 53 is formed and is provided with an adjusting pin 52 which is engaged with the gear portion 53 and the body portion 41 of the adjusting bolt 40, The range of movement of

The adjustment pins 51 may be disposed and bonded to the vibration-isolating coils 50 disposed on both sides of the lower block 20 with respect to the lower block 20. Specifically, Gear teeth 53 formed on the adjusting pins 51 are formed on the respective ends of the earthquake-resistant coil 50a arranged on the right side of the earthquake-proof coil 50a. Can be coupled with the gear teeth 53 formed on the upper side facing upward. Of course, the left side and the right side can be reversed.

The reason why the position of the adjustment pin 51 is different according to the position of the vibration-proof coil 50 is that the gear 53 formed on the adjustment pin 51 of the vibration-proof coils 50 on both sides, So that it is positioned above / below the body 41 of the bolt 40. 5, when the adjustment bolt 40 formed on the lower block 20 and the upper block 30 is rotated, the rotation of the adjustment bolts 40 causes the lower block 20 to receive the vibration of the earthquake coil 50 The upper end of the vibration isolating coil 50 converges or expands at the upper end of the earthquake coil 50 so that the length of the earthquake coil 50 exposed to the outside of the lower block 20 and the upper block 30 can be adjusted have. The supporting force of the seismic resistance device 100 can be adjusted by adjusting the length of the earthquake-resistant coil 50.

5 (a), when the vibration of the earthquake coil 50 is reduced, as shown in FIG. 5 (a), the vibration of the earthquake- The pressing point approaches the bending point of the earthquake coil 50, and in the opposite case, the pressing point moves away from the bending point of the earthquake coil 50 as shown in Fig. 5 (b). When the same load is transmitted to the earthquake-resistant coil, deformation of the earthquake-resistant coil 50 in FIG. 5 (b) in which the earthquake-resistant coil 50 is exposed is much larger than in FIG. 5 (a). Accordingly, when the weight of the power transmission / distribution panel P is large, the exposed length of the earthquake coil 50 is shortened to have a larger supporting force as shown in Fig. 5 (a) As shown in Fig. 5 (b), by increasing the exposure length of the earthquake coil, it is possible to have a relatively small supporting force. Accordingly, when the earthquake-proof apparatus capable of adjusting the supporting force is applied to a plurality of switchbars P having various weights, it is possible to provide a seismic isolation system in which the earthquake- It can be applied to all the following switchboards (P).

The urethane buffer block 60 absorbs and attenuates vibrations and shocks externally applied together with the earthquake coil 50 so that the vibration of the earthquake coils 50 between the lower block 20 and the upper block 30 Respectively. The urethane buffer block 60 is formed of urethane having excellent rigidity and elasticity and is formed on both sides in the longitudinal direction to form a plurality of buffer holes 61 having a buffer function. The upper and lower surfaces of the urethane block 60 may be formed to correspond to the areas of the lower block 20 and the upper block 30, (Not shown).

FIG. 6 is a view showing the earthquake-proof operation of a switchboard through a seismic system for a switchgear according to the present invention.

2, the earthquake-proof apparatus 100 may be installed at each corner of the lower end of the switchgear, and the earthquake-resistant apparatus 100 may be mounted on the earthquake-resistant coil 50 in accordance with the load applied to each corner of the switchboard enclosure P. As shown in FIG. It is equipped with adjusting the support force by controlling the length. That is, the seismic apparatus 100 installed on the side of the corner where the load greatly acts reduces the length of the earthquake coil 50 through the adjustment bolt 40 so as to reduce the exposure of the earthquake coil 50, The earthquake-proof apparatus 100 provided on the side of the earthquake-proof apparatus 100 is controlled through adjustment bolts 50 so as to increase the exposure of the earthquake-resistant coil 50 so as to reduce the supporting force so as to stably support the power- Can be installed.

Thereafter, as shown in FIG. 6, when the transmission and reception section P swings up and down and left and right due to the occurrence of vibration, even if the lower block 20 and the upper block 30 shake due to the swing of the transmission / There is an effect that the vibration can be absorbed and dispersed by the vibration transmitted from the transmission / reception panel P by the vibration-proof coil 50 and the urethane buffer block 60.

Meanwhile, the earthquake-proof apparatus for a transmission and transmission system according to the present embodiment is not limited to the above-described embodiment, and various modifications may be made without departing from the technical spirit of the present invention. In addition, although the present invention has been described as a typical example of a switchboard, it can be easily applied to a person skilled in the art to which the present invention pertains that the present invention can be applied to a variety of similar structure facilities including an electric power reception facility, a substation facility, a distribution facility, You will know.

100: Seismic device
10: base panel 20: bottom block
30: upper block 40: adjusting bolt
50: Seismic coil 51: Adjusting pin insertion groove
52: Adjusting pin
60: Urethane buffer block P: Switchboard (enclosure)

Claims (2)

An earthquake-resistant device installed in a state in which a bearing force is adjusted so as to correspond to a load of each corner of a power transmission / reception panel to enable earthquake-resistance of a power /
The earthquake-
A plurality of coil insertion holes which are formed at equal intervals along both longitudinal sides of the first lower panel and a second lower panel which is coupled to and come into contact with the first lower panel, A second bolt insertion hole in communication with the first lower panel and a second lower panel that is in contact with the first lower panel; ;
The first and second upper panels corresponding to the first lower panel and the second lower panel and having the same structure as the lower block and being fixedly installed through the third bolt on the bottom surface of the cabinet, An upper block;
A plurality of earthquake-resistant coils each having a U-shaped structure, both ends of which are inserted into coil insertion grooves formed in the lower block and the upper block, respectively, and 'T' shaped adjustment pin insertion grooves are formed at both ends;
A urethane buffer block provided between the lower block and the upper block and inside the anti-resonance coil;
A plurality of gears are formed on the inner surface of the other end of the adjustable pin insertion groove, and the other end of the gear is inserted into the adjustment pin insertion groove, And a regulating pin having a protruding stopper protruding outwardly of a larger size than a gear in a gear forming direction; And
A length of the seismic coils inserted into the adjustment bolt insertion groove and interlocked with gears formed on the adjustment pins coupled to the respective earthquake coils inside the lower block and the upper block to be exposed to the outside of the lower block and the upper block by rotation, And an adjusting bolt for simultaneously changing the position of the adjusting bolt,
After the exposure length of the earthquake coil is varied through the adjustment bolts so as to correspond to the loads of the respective corners of the switchgear before installation in the switchboard, the bolts coupled to the fastening holes of the lower block and the upper block are firmly fastened, Wherein the first and second elastic members are installed after a change in length is prevented. The method according to claim 1,
Wherein an outer surface of the adjusting pin is formed to have the same curvature so as to coincide with a circular curvature of a shape of a section of the earthquake coil.

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