KR102441373B1 - Seismic isolation type swithboards - Google Patents

Abstract

In accordance with the present invention, disclosed is a seismic isolation type switchboard. The seismic isolation type switchboard includes: an upper plate having a fixing bolt combined with a center part to be fixed to a lower part of an enclosure, having at least one first stopper formed on each of both sides, and having pin pockets formed on every side around the fixing bolt on the lower side; a lower plate placed on the lower side of the upper plate at regular intervals, having a taphole bored in a center part, having at least one second stopper formed on each of both sides, and having guide holes formed on every side around the taphole; a plurality of carrier stems arranged on every side between the upper plate and the lower plate to support the upper plate; a plurality of coil springs placed on the lower plate with the lower part of the carrier stems inserted in the middle, and elastically absorbing vibrations in a vertical direction transmitted through the carrier stems by having an upper surface in contact with a spring sheet of the carrier stems; a grid barrier disposed between the coil springs on the lower plate to guide the upper plate and the carrier stems to smoothly move up and down due to the elastic action of the coil springs while limiting the movement of the coil springs in forward and backward and left and right directions within a predetermined range; and a casing covering the circumferences of the upper plate and the lower plate. Therefore, the present invention is capable of reducing manufacturing costs and improving productivity.

Description

Seismic Isolation Type SWITHBOARDS

The present invention relates to a substation board for a substation facility for receiving power from a power company, converting it to a required voltage, and distributing it to a required place. It relates to the general seismic isolation type riparian system that reliably resists the external force in the horizontal direction by reinforcing the durability against it.

Today, damage recovery measures in the event of a disaster are established on the premise that the electricity supply is stable. It is required to secure seismic stability and seismic isolation performance in the case of the overall waterside.

These water substations require continuous inspection, repair, and maintenance, so most of the control devices for power facilities are stored in a modularized cubicle form, that is, in a case such as a rectangular parallelepiped steel cabinet, in a package type. It is composed of a protective structure, and due to its morphological and structural characteristics, it does not move only in the vertical or horizontal direction due to vibrations such as earthquakes, but moves in arbitrary directions, such as tilting up, down, left and right. It should be approached in a different way from seismic design.

Currently, the methods commonly used to improve the seismic isolation performance of the entire waterside are to increase the strength of the frame or to increase the lateral strength by adding braces. , the method of absorption with devices such as electromagnets and ball bearings, and the method of installing an isolator to separate the entire water basin from the ground.

However, in the case of a spring, because it attenuates only vertical vibration, it is not suitable for damping the horizontal force in an earthquake. It is not suitable for damping vertical vibrations as it separates the structure from seismic loads.

Accordingly, conventional technologies applied to the entire waterside attenuate seismic vibration by combining a vibration-proof element that can withstand only vertical stiffness and a vibration-proof element that can withstand only horizontal stiffness, but it is difficult to respond immediately to vibration in other directions. As the damping effect is significantly reduced, there is a problem in that the entire waterside is overturned due to the inclination direction.

In recent years, the overall waterside is seismic resistance, a concept that increases the rigidity of a structure in order to satisfy the specific displacement limit suggested by the state or institution, that is, to damp the horizontal displacement that occurs during an earthquake, or control power to respond to vibrations inside and outside the structure. Unlike vibration damping, which reduces or attenuates vibration by applying

These seismic isolators are largely divided into an elastic bearing series using the shear stiffness and damping of rubber, and a sliding bearing series using a friction damping between PTFE (Poly Tetra Fluor Ethylene) and a stainless plate and having a separate restoration device.

In particular, it is very important to minimize the friction coefficient on the contact surface for sliding bearing series seismic isolators. because it may vary depending on

As an example of such a sliding bearing series seismic isolator, Patent Document 1 discloses that a ball caster moves on a rolling plate coupled to the upper end of the coil spring to prevent damage to the structure or the ground when the ground is tilted, and also to dampen the vibration in the horizontal direction. A 'seismic support' is disclosed.

However, since it has a structure in which one coil spring and one ball caster are combined, structural stability is lowered when vibration occurs in the horizontal direction, so it is difficult to expect a smooth vibration damping effect.

That is, when the lower structure vibrates in the horizontal direction, there is a problem in that the ball caster cannot form a stable support force because it is a structure that moves on a rolling plate coupled to one coil spring.

In addition, in the method using one coil spring, damping is achieved only when the vibration generated in the horizontal direction is converted to the vertical direction. In order to do this, the spring constant and size must be quite large, so there is a limit in that it is difficult to miniaturize the device.

As another example, Patent Document 2 discloses a damper for seismic isolation having a structure in which an upper plate and a low plate absorb earthquake motion in horizontal and vertical directions by the cushioning action of a coil spring to attenuate seismic energy transmitted to the entire waterside.

However, this is because the upper plate is tilted to one side with respect to the low plate, and when the coil spring supporting it is too twisted or bent, it is easily deformed and damaged, and the vibration damping property ( There is a problem that the vibration damping characteristic is significantly lowered.

In addition, after inserting the socket into the cylinder, the joint pin is inserted in the state that the pin hole and the connection hole through both are aligned so that they pass through, and the snap rings are fastened to both ends of the joint pin one by one to prevent separation. There is a problem in that productivity is considerably lowered due to this complexity and difficulty.

The background or prior art described herein is information possessed by the inventor or acquired in the process of deriving the present invention, and is only intended to help understand the technical meaning of the present invention, and prior to the filing of the present invention, the technology to which this invention belongs This does not mean that the technology is widely known in the field.

US 10-1800871 B1 (2017.11.17) US 10-2177483 B1 (2020.11.05) US 10-2148133 B1 (2020.08.20) US 10-2369353 B1 (2022.02.24)

Accordingly, the inventor of the present invention comprehensively considers the above-mentioned matters and at the same time as an idea to solve the technical limitations and problems of the existing seismic isolation type water substation, it is possible to quickly absorb the vibration energy in the horizontal and vertical directions caused by earthquakes or vibrations. Reduces damage to various electric power facilities by effectively damping, in particular, stably resisting when external forces in the horizontal direction are applied, etc. As a result, the present invention was created as a result of continuous research to develop a new seismic isolation type riparian overall with a structure that can be manufactured and assembled easily as well as maintaining stable for a long time.

Therefore, the technical problem and object to be solved by the present invention is to provide a seismic isolation type water substation that can stably maintain vibration damping properties for vibrations in any direction.

Another technical problem and object to be solved by the present invention is to provide a seismic isolation type water substation that minimizes the coefficient of friction between component parts and can be easily manufactured and assembled.

Here, the technical problems and objects to be solved by the present invention are not limited to the technical problems and objects mentioned above, and other technical problems and objects not mentioned will be clearly understood by those skilled in the art from the following description.

Specific means according to an embodiment of the present invention for effectively achieving a specific technical purpose while embodying a new idea for solving the technical problem of the present invention as described above is to fix the lower part of the case (case) fixing bolts for the upper plate are coupled to the center, at least one first stopper is formed on both sides, respectively, and pin pockets are formed in all directions centered on the fixing bolt on the lower surface; a low plate having a tap hole in the center, at least one second stopper formed on both sides, respectively, and guide holes in all directions around the tap hole; Arranged at intervals, a spring seat is formed on the upper surface, a support pin fitted in the pin pocket is integrally formed on an upper surface of the spring seat, and a sliding pin moving along the guide hole is formed in the lower portion, the spring A plurality of carrier stems having faces formed between the seat and the sliding pin in contact with the upper surface of the low plate by the compression action of a coil spring, the lower portion of the carrier stem being sandwiched in the middle, and placed on the low plate, the carrier stem A plurality of coil springs for elastically absorbing vibrations in vertical and horizontal directions transmitted through the carrier stem in contact with the upper surface of the spring seat, disposed between the coil springs on the low plate, the While guiding the upper plate and the carrier stem to move up and down smoothly due to the elastic action of the coil springs, the coil springs maintain the spacing arranged in the front and rear, left and right with respect to the center of the fixing bolt in the front and rear and left and right directions within a certain range. A grid barrier that restricts movement and has a clearance hole communicating with the tab hole of the low plate at the bottom and covers the upper plate and the perimeter of the low plate, and the upper plate is vertically and Remind to allow movement in the left and right directions First scope holes each having a size larger than the first stopper are drilled, and second scope holes each having a size larger than the second stoppers are drilled at positions corresponding to the second stoppers so that the low plate can move in the left and right directions. It proposes an overall seismic isolation type water basin, characterized in that it is adopted including a casing.

As a result, the present invention rapidly absorbs and dissipates earthquake motion in horizontal and vertical directions, so it can not only attenuate earthquake energy transmitted to the enclosure, but also strengthen durability to maintain stable vibration damping properties for a long time. It is possible to prevent the enclosure from being overturned.

In addition, in a preferred aspect of the present invention, the grid barrier has the clearance hole formed at a constant height at the lower end, and a pair of first pairs of the first pair of first gaps at a distance wider than the width of the clearance hole at the upper edge. A lying panel having a joint slit formed thereon, and a pair of upright panels that are coupled by fitting to be perpendicular to the lying panel, and each having a second joint slit corresponding to the first joint slit at half the height of the lower center edge. As a result, the pendulum motion occurs on the frictional surface with the low plate to increase the restoring force, and at the same time, it is possible to improve the dynamic stability by minimizing the contact friction coefficient on the contact surface between the coil springs, and to maximize the vibration energy offset to improve the seismic isolation performance.

In addition, in a preferred embodiment of the present invention, the grid barrier is made of steel, and a first coating layer is formed to reduce frictional resistance by making a slip smooth and smooth on a lower surface in contact with the low plate. , a second coating layer is formed on the surface facing the coil springs to absorb and disperse vibrations, shocks, and compressive loads by elastic action, so that the grid barrier position can be moved quickly and smoothly when an earthquake occurs, resulting in a damping effect on vibrations in any direction It is advantageous in dynamic stability to restore the original stable posture when the posture is changed because the vibration damping performance is maintained for a long time, and the vibration transmission rate can be efficiently reduced by the damping force due to friction.

According to the technical idea and embodiment of the present invention, which is based on a unique solution to solve the above technical problems, when an earthquake occurs, it absorbs vibrations in the horizontal and vertical directions by elastic action to dissipate the energy. The seismic energy transmitted to the enclosure can be effectively attenuated.

In addition, it responds stably to primary waves generated from any direction among seismic waves and effectively absorbs the compressive load (vertical load) of the enclosure and the shear load (horizontal load) according to the movement displacement such as bending that occurs at the same time. You can dissipate that energy.

In addition, by reducing the influence of the friction coefficient between the major components by the material, the operation is performed smoothly, which not only benefits the dynamic stability but also maximizes the offset of minute high-frequency vibration energy.

In addition, even if the upper plate is tilted to one side with respect to the low plate, the grid barrier prevents deformation and damage caused by excessive twisting or bending of the coil spring. The damping property can be stably maintained for a long time, and damage to various electric power facilities can be reduced by strengthening the seismic isolation performance and durability against earthquakes, such as stably resisting the external force in the horizontal direction.

Moreover, it reduces frictional resistance by making the slip of the grid barrier smooth and smooth, and it can extend the service life by absorbing and distributing the impact between the coil springs, as well as manufacturing (processing) and Because assembly is easy, manufacturing cost can be reduced and productivity can be improved.

Here, the effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a perspective view showing a seismic isolator among the main elements constituting an overall seismic isolating type water substation according to an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view of FIG. 1 .
3 is a cross-sectional view of FIG. 1 ;
4 is a disassembled perspective view of a seismic isolator among major elements constituting an overall seismic isolating type water substation according to an embodiment of the present invention.
5 is an exploded perspective view of a part of the seismic isolator among the main elements constituting the overall seismic isolating type water substation according to the embodiment of the present invention.
6 is a longitudinal cross-sectional view to help understand the operating state of the overall seismic isolation type water substation according to an embodiment of the present invention.

Hereinafter, an embodiment according to the present invention will be described in more detail with reference to the accompanying drawings.

Prior to this, the terms described below are defined in consideration of the functions in the present invention, which indicate that they should be interpreted as concepts consistent with the technical spirit of the present invention and meanings commonly or commonly recognized in the art.

In addition, when it is determined that a detailed description of a known function or configuration related to the present invention may obscure the gist of the present invention, the detailed description thereof will be omitted.

The accompanying drawings may be illustrated by exaggerating or simplifying a part for the convenience of explanation and understanding of the configuration and operation of the technology, and reveals that each component does not exactly correspond to the actual size and shape.

In addition, in this specification, the term and/or is meant to include a combination of a plurality of related described items or any of a plurality of related described items, and when a part includes a certain component, it is a description that is specifically opposite This does not mean that other components are excluded, but other components can be further included.

That is, terms such as 'include' or 'have', 'have' as used in the present specification mean that a feature, number, step, operation, component, part, or combination thereof exists. However, it is to be understood that this does not exclude the possibility of addition or existence of one or more other features or numbers, step operation components, parts, or combinations thereof.

And terms such as upper, lower, upper, lower, upper, lower, upper, lower, front and rear, left and right are used for convenience to distinguish relative positions of each component. For example, the upper side in the drawing may be named or referred to as the upper side and the lower side as the lower side, the longitudinal direction may be named or referred to as the front-back direction, and the width direction may be named or referred to as the left/right direction.

In addition, among the terms used in this specification, 'formed on top', 'formed on the top (upper side)', 'formed on the bottom (lower side)', 'installed on top, installed on the top (upper side)', 'on the bottom (lower side) Installation does not mean that the components are directly stacked or formed (installed) in direct contact, but includes the meaning that other components are further stacked or formed (installed) between the components.

Also, terms such as first, second, etc. may be used to describe various components. That is, terms such as first, second, etc. may be used only for the purpose of distinguishing one component from another. For example, a first component may be referred to as a second component without departing from the scope of the present invention, and the second component may also be referred to as a first component.

As shown in FIGS. 1 to 6, the seismic isolation type water substation according to an embodiment of the present invention includes an enclosure (C) in the form of a cubicle having at least one or more various electrical distributors mounted therein, and this enclosure (C). ), it includes a seismic isolator (1) that absorbs horizontal and vertical seismic motion when an earthquake occurs to damp seismic energy.

In particular, the main elements constituting the seismic isolator (1) include an upper plate (10), a low plate (20), a carrier stem (30), a coil spring (40), a grid barrier (50) and a casing (60). , Among them, the carrier stem 30 and the coil spring 40 are respectively arranged in four places between the upper plate 10 and the low plate 20 in order to disperse the vertical and horizontal loads to increase the vibration damping effect.

The upper plate 10 is made of a rectangular plate shape having a certain length, width and thickness, and a fixing bolt 11 for fixing to the lower portion of the enclosure (C) is coupled to the central portion thereof, and a casing is provided on both sides, respectively. At least one first stopper 12 fitted into the first scope hole 61 of (60) and for limiting displacement with respect to the casing (60) is formed to protrude.

That is, the first stopper 12 is formed in a shape having a certain length, width, and thickness, and is inserted into the first scope hole 61 of the casing 60 in the vertical and horizontal directions to the enclosure C due to earthquakes, etc. When displacement occurs, the displacement is limited while contacting and interfering with the first scope hole 61 .

And pin pockets 13 for supporting the upper end of the carrier stem 30 are formed in all directions around the fixing bolt 11 of the lower surface of the upper plate 10, respectively.

Here, the upper plate 10 is preferably manufactured using carbon steel (SS400), which is a structural rolled steel, as a main material.

In addition, the fixing bolts 11 may be formed of through bolts for the convenience of assembly, and it is preferable that the first stoppers 12 are integrally formed by two at regular intervals on both sides of the first stopper 12 .

On the other hand, as shown in FIG. 6 , the upper surface of the upper plate 10 is stably inserted into the coupling hole of the enclosure (C) or the pedestal by an elastic action to absorb and disperse vibrations, shocks and compressive loads (B) Of course, it can be installed.

That is, the bush (B) serves to mitigate vibration or noise caused by vibration transmitted to the enclosure (C) and to attenuate natural frequencies generated by earthquakes or vibrations.

Here, the bush (B) is made of an elastic material such as polyurethane or rubber to prevent lifting or slipping of the enclosure (C) and to secure buffer and support power at the same time, as well as to absorb compressive and shear loads more efficiently. Alternatively, it is preferable to form a high-elasticity and high-stretch material in which an iron plate or lead is inserted into the compressed rubber.

The low plate 20 is formed in the shape of a rectangular plate having a certain length, width and thickness, and is disposed at regular intervals on the lower side of the upper plate 10 .

And in the center of the low plate 20, a tap hole 21 for fixing by bolting to the foundation on the ground is formed, and both sides are fitted into the second scope hole 62 of the casing 60, respectively, and the casing At least one second stopper 22 for limiting displacement with respect to 110 is integrally formed to protrude.

In addition, guide holes 23 for supporting and guiding the carrier stem 30 are formed in four places centered on the tap hole 21 among the upper surface of the low plate 20 .

Here, the tap hole 21 is formed in the form of a screw hole in which a female thread is cut for direct screw coupling with an anchor bolt or a through bolt, and the second stopper 22 is preferably formed in two at regular intervals on both sides. do.

The carrier stem 30 guides and supports the upper plate 10 so as to move up and down within a certain displacement due to the elastic action of the coil spring 40, while directing the direction of the reaction to the external force acting on the coil spring 40. For this purpose, it is made of a long steel rod shape and is arranged at regular intervals in the front, rear, left, and right directions in all directions between the upper plate 10 and the lower plate 20 .

And, the lower end of the carrier stem 30 is normally located above the guide hole 23 of the low plate 20 in order to absorb vibration by compressing the coil spring 40 while descending by an external force.

That is, the carrier stem 30 moves up and down about its axis when vibration occurs so that the displacement of the upper plate 10 and the deformation of the coil spring 40 are naturally and smoothly made, and the upper plate 10 and the coil spring When the posture of (40) is changed, dynamic stability to restore the original stable posture is given.

And at a certain height above the carrier stem 30, a spring sheet 31 is formed slightly larger than the diameter of the coil spring 60, and the pin pocket 13 of the upper plate 10 is on the upper surface of the spring sheet 31. ) A support pin 32 fitted inside is integrally formed to protrude.

In addition, the sliding pin 33 is integrally formed to protrude from the lower portion of the carrier stem 30 to move freely along the guide hole 23 of the low plate 20 .

In addition, a face 34 in contact with the upper surface of the low plate 20 during the compression action of the coil spring 40 is integrally formed between the spring seat 31 and the sliding pin 33 .

That is, the carrier stem 30 is inserted into the inner space of the coil spring 40 so as to support the lower surface of the upper plate 10 so that the outer diameter of the middle part is slightly larger than the diameter of the coil spring 40 and the spring seat 53 It is formed slightly smaller than the outer diameter of

The coil spring 40 has an upper surface on the spring seat 31 of the carrier stem 30 to elastically absorb vibrations in the vertical direction transmitted through the carrier stem 30 while supporting the upper plate 10 by elasticity. It is placed in contact with the lower portion of the carrier stem 30 and placed on the low plate 20 at a predetermined distance in the front, rear, left and right directions.

And the coil spring 40 is provided to maintain the gap between the upper plate 10 and the lower plate 20 by elasticity while resisting the compressive force while free movement is restricted by the grid barrier 50 .

In addition, the coil spring 40 elastically supports and supports the compressive load of the enclosure (C), allows a certain displacement in the horizontal direction, and is elastically deformed in response to external forces such as shear load and horizontal load to generate vibration energy and impact force. The upper end is in contact with the spring seat 31 of the carrier stem 30 and the lower end is in contact with the low plate 20 in order to absorb and dissipate and disperse the seismic force to minimize the direct transmission of vibration to the enclosure (C). has been

Here, the coil spring 40 is preferably made of a compression coil spring having a rectangular cross section inserted into the carrier stem 30 and the low plate 20 in a tensioned state in order to provide a force that resists the applied load. It is not limited, and any one may be used as long as it has the same action and effect.

In addition, it is preferable to use the initial spring constant (k) of the coil spring 40 is 25N/mm to 75N/mm.

For example, by using an excellent material such as SAE9254, it can withstand high stress, high-speed amplitude, and heat resistance, and by adopting a so-called die spring, which has high structural stability with high rigidity and high modulus of elasticity by LP treatment of SWRS wire, It can sufficiently support the high-load enclosure (C), and the possibility of breakage is low, and when an earthquake occurs, it can absorb and relieve high stress sufficiently to block or reduce transmission to the enclosure (C).

On the other hand, the coil spring 40 can be applied by changing the elastic modulus and tension according to various variables such as the weight of the enclosure (C), and the load (fastening tension) applied through this and the strength to absorb vibration can be arbitrarily set. can

The grid barrier 50 guides the upper plate 10 and the carrier stem 30 to move up and down smoothly due to the elastic action of the coil springs 40, while the coil springs 40 are fixed based on the center of the bolt 11. Front and rear, left and right directions between the coil springs 40 on the low plate 20 in order to stably maintain the distance and spacing arranged in the front and rear left and right to limit the movement of the coil springs 40 in the front and rear and left and right directions within a certain range. It is arranged to be slidably movable, and is installed at a height lower than the height between the upper plate 10 and the lower plate 20 .

That is, the grid barrier 50 divides the inner space of the casing 60 into four sections in the length and width directions to keep the arrangement position of the coil springs 40 constant, thereby resilient the stress concentrated on the coil spring 40. It is possible to reduce the duration of vibration by dispersing and dissipating it.

In addition, the grid barrier 50 prevents the sliding pins 33 of the carrier stems 30 located above the guide holes 23 of the low plate 20 from being separated from the guide holes 23 by vibration in the horizontal direction. Prevents and supports stable lifting operation.

And the grid barrier 50 minimizes the distortion when the coil spring 40 is twisted in the horizontal direction due to external factors such as earthquakes or vibrations, as well as quickly returns and restores to its original state, and vibrates in the enclosure (C). It is made of steel to prevent it from being drawn to either side when this is applied and to restore it to its original state.

In addition, at the lower end of the grid barrier 50, the tap hole 21 of the low plate 20 and the tap hole 21 of the low plate 20 to prevent interference when the seismic isolator 1 is fastened with bolts to the foundation or the like above the ground and to prevent interference during movement due to vibration The clearance hole 51 leading to the is formed at a constant height.

As shown in FIGS. 4 and 5 , the grid barrier 50 is coupled such that the lying panel 53 and the pair of upright panels 55 are orthogonal to each other in a fitting manner.

To this end, a pair of first joint slits 52 are formed at the upper edge of the lying panel 53 at a distance wider than the width of the clearance hole 51 and half the height of the clearance hole 51 , and the lower ends of the upright panels 55 . A first joint slit 52 and a second joint slit 54 corresponding to half the height are formed at the edge of the central part, respectively.

In addition, a first coating layer 56 is formed on the lower surface of the grid barrier 50 in contact with the low plate 20 to reduce frictional resistance by making the slip smooth and smooth.

That is, the first coating layer 56 is applied in the form of a paint to form a lubricating film, thereby reducing friction between the grid barrier 50 and the low plate 20 to smooth the movement. Prevents friction and eliminates operating noise.

Here, the first coating layer 56 is made of PTFE (Poly Tetra Fluor Ethylene), which has a small coefficient of friction and excellent physical properties such as heat resistance, abrasion resistance and corrosion resistance, chemical resistance, and non-adhesiveness, as a basic material, and contains various components such as carbon, glass fiber, and copper. A mixed composite material may be employed or it may be made of Teflon-based synthetic resin.

In addition, the first coating layer 56 is coated with a thin thickness within 20 μm on the lower surface in contact with the low plate 20 of the grid barrier 50 in a manner using a screen, spray or roll 190 It can be dried (thermal curing) for 40 minutes at ~250°C.

On the other hand, the first coating layer 56 is composed of 10 to 35% by weight of a binder, 10 to 20% by weight of a solid lubricant, 0.5 to 5% by weight of an additive, and 20 to 70% by weight of the remaining solvent, so that the viscosity is 40,000 to 65,000cps. It can be formed by coating the liquid composition.

As the binder, polyurethane (PU), polyamide imide (PAI), epoxy, etc. may be used to act as a binder for the solid lubricant.

The solid lubricant may be composed of spherical particles having a size of 0.1 to 5 μm with good dispersibility and lubricity to reduce the friction coefficient.

For example, PTFE, graphite, graphene, molybdenum disulfide (MoS2), boron nitride (BN), WS2, PbS, Sb2O3, PbO, polyetherether ketone (PEEK), carbon black, etc. may be used. .

In particular, when 10 to 20% by weight of PTFE is contained, the coating hardness of the first coating layer 56 may be 9H or more.

That is, when the first coating layer 56 contains 10 to 20% by weight of PTFE, when the drying (thermal curing) temperature is less than 190° C., thermal curing does not occur sufficiently and the mechanical strength decreases, and when it exceeds 250° C., it is in a crystalline form. As it changes, weak properties such as viscosity and abrasiveness increase.

As additives, an antifoaming agent to remove air bubbles generated during coating operation, a leveling agent affecting the appearance and surface scratchability of the coating film, and/or an adhesion promoter to increase adhesion, etc. can be used. Nanoceramic particles can be added to enhance hardness and provide agate resistance to compensate.

For example, nano-ceramic particles include TiO ₂ , alumina (α-Al ₂ O ₃ , β-Al ₂ O ₃ , Al ₂ O ₃ ㆍH ₂ O, etc.), ZrO ₂ , carbon nanotubes (CNT), etc. Powder may be used, and may be contained in an amount of 0.5 to 5% by weight in the first coating layer.

Solvents include enemethylpyrrolidone {(N-Methyl-pyrrolidone, C5H3NO (insoluble)}, methyl ethyl ketone {(Methyl Ethyl ketone, CH3COC2H5 (insoluble)}, dimethylacetamide (Di Methyl Acetamide, C4H9NO), Any one of ethyl acetate (Ethyl Acetate, CH3COOC2H5) can be selected and used, and it can be used in the range of 20 to 70 wt% or 30 to 50 wt% for the first coating layer.

On the other hand, the first coating layer 56 includes 30 to 60 wt% of polyamideimide (PAI) as a liquid binder and 10 to 25 wt% of an epoxy resin, and 5 to 15 wt% of polytetrafluoroethylene (PTFE) as a lubricating powder. and 3 to 10% by weight of graphite, 3 to 10% by weight of a latent curing agent (blocked isocyanate), 1 to 3% by weight of a silicone-based leveling agent, 0.5 to 2% by weight of a dispersant, and 0.5 to 2% by weight of a fluorine-based antifoaming agent It can be formed by coating a liquid composition having a viscosity of 40,000 to 65,000 cps on the lower surface of the grid barrier 50 by a screen coating method.

Polyamideimide (PAI) is used in an amount of 30 to 60% by weight, preferably 40 to 55% by weight, based on the total weight of the coating solution in order to improve abrasion resistance and surface strength.

If the content of polyamideimide (PAI) is less than 30% by weight, abrasion resistance may be insignificant, and if it exceeds 60% by weight, dispersibility may be deteriorated, and screen coating may be difficult due to too high viscosity.

Epoxy resin together with polyamideimide (PAI) has a binder function that aggregates particulate components in the coating solution, interlayer adhesion between metal materials and the coating layer, and reinforcement of the strength of the coating layer. 10% to 25 based on the total weight of the coating solution. The weight percent range is used.

If the content of the epoxy resin is less than 10% by weight, interlayer adhesion, particle cohesion, and strength reinforcement may be insignificant. The content of mid (PAI) and polytetrafluoroethylene (PTFE) may be lowered, so that abrasion resistance and the like may be reduced.

Polytetrafluoroethylene (PTFE) uses spherical particles having an average size of 2 to 5 μm in the range of 5 to 15 wt % based on the total weight of the coating solution for improvement of abrasion resistance, lubricity, and heat resistance, preferably 8 to 12 It is used in the weight % range.

When the content of polytetrafluoroethylene (PTFE) is less than 5% by weight, the improvement effect such as abrasion resistance and lubricity is insignificant, and when it exceeds 15% by weight, dispersibility and coating properties may be deteriorated.

Graphite is used in the form of particles having an average size of 0.1 to 5 μm in the range of 3 to 10 wt % based on the total weight of the coating solution for lubricity and strength reinforcement.

If the content of graphite is less than 3% by weight, the improvement effect such as lubricity and strength reinforcement may be insignificant, and if it exceeds 10% by weight, it may be difficult to obtain desirable properties in terms of surface properties.

In addition, when the particle size of the graphite is too small, dispersibility may be deteriorated due to agglomeration, and if the particle size is too large, the surface property of the coating layer may be deteriorated.

For curing the latent curing agent (blocked isocyanate), the range is 3~10% by weight based on the total weight of the coating solution, the silicone-based leveling agent is in the range of 1~3% by weight based on the total weight of the coating solution for surface smoothness, and the dispersant improves dispersibility. To prevent foaming, the fluorine-based antifoaming agent is added in an amount of 0.5 to 2% by weight based on the total weight of the coating solution, and 0.5 to 2% by weight based on the total weight of the coating solution.

In addition, water, an organic solvent (alcohols, ketones), and a solvent (methyl ethyl ketone) that is a mixture thereof may be further included in an amount of 2 to 40 wt % based on the total weight of the coating solution.

Here, when the content of each component is out of the addition range, the function obtainable from each component is insignificant or the synergistic effect due to excessive use is not large, which may be undesirable from an economic point of view.

And a second coating layer 57 is formed on the surface facing the coil springs 40 to absorb and disperse vibrations, shocks, and compressive loads by an elastic action.

That is, the second coating layer 57 suppresses the vibration applied to the grid barrier 50 from being transmitted to the adjacent coil spring 40 , thereby reducing the vibration and maintaining the function of buffering for a long time.

Here, the second coating layer 57 may include 5 to 60% by weight of a chloroprene polymer (2-chloroprene rubber) having excellent mechanical properties and strong adhesion, and the remaining amount may include a solvent, an antifoaming agent, a leveling agent, a dispersing agent, and the like.

In addition, the second coating layer 57 is coated on the surface of the grid barrier 50 with a thin thickness of less than 20 μm in a method using a screen, spray or roll, and then at 130 to 170° C. for 40 minutes. It can be dried (heat cured).

On the other hand, if the drying (thermal curing) temperature of the second coating layer 57 is less than 130 ℃, thermal curing does not occur sufficiently, the mechanical strength is lowered, and when it exceeds 170 ℃, power consumption and production cost increase.

The casing 60 surrounds and covers the four perimeters of the upper plate 10 and the lower plate 20 while safely accommodating a plurality of carrier stems 30 and coil springs 40 and grid barriers 50 placed therein. designed to protect.

And at both upper sides of the casing 60 , that is, at positions corresponding to the first stoppers 12 , the upper plate 10 is moved at regular intervals in the vertical and horizontal directions while the first stoppers 12 are fitted. A pair of first scope holes 61, each having a size larger than the vertical height and the left and right width of the first stopper 12, are drilled.

In addition, at both lower sides of the casing 60 , that is, at positions corresponding to the second stoppers 22 , the second stoppers 22 are inserted at regular intervals so that the low plate 20 can move in the left and right directions. A pair of second scope holes 62 each having a size larger than the left and right widths of the second stopper 22 are drilled.

In addition, the size of the front and rear and left and right widths of the inner space of the casing 60 is slightly larger than the front and rear and left and right widths of the upper plate 10 and the lower plate 20 .

Here, the first scope hole 61 is preferably formed so that the movable range of the upper plate 10 is determined within 1 cm in the vertical direction.

In addition, the casing 60 may be provided in a symmetrically bisected form about the axis of the fixing bolt 11 to improve assembling, and in this case, one casing and the other (opposite) casing face each other. It can be assembled simply by tightening the edges by welding or bolting using bolts and nuts.

On the other hand, the upper plate 10, the low plate 20, the carrier stem 30, the grid barrier 50, and the casing 60 are preferably manufactured using carbon steel (SS400), which is a structural rolled steel, as a main material. .

The main action and operating principle of the seismic isolator 1 among the main elements constituting the seismic isolation type water substation according to the embodiment of the present invention configured as described above will be described below.

First, as shown in Figure 6, the upper plate (10) with a hole drilled in the lower part of the lower plate (20) by fastening the bolts embedded in the foundation or pedestal on the ground to the tap hole (21) of the low plate (20). After passing through the fixing bolt 11, it can be fixed by tightening it with a nut.

In this state, when a compressive load (vertical load) occurs due to earthquake or vibration, etc., the remaining components except the casing 60 move organically and the vibration transmitted to the enclosure (C) by the contraction and extension of the coil spring (40). And it can absorb or dampen the load naturally by dispersing it.

In addition, when a vertical load and a horizontal load occur at the same time, the coil spring 40 absorbs or attenuates the vibration while moving from the original position as much as the vertical and horizontal movements and displacements, thereby increasing the dispersion effect of vibration.

In other words, when an earthquake occurs, it effectively absorbs horizontal and vertical earthquake motion and dissipates the energy. Seismic resistance and seismic safety can be greatly improved.

For example, when a horizontal load is generated while the foundation is tilted due to an earthquake, etc., the multiple carrier stems 30 absorb or absorb vibrations and loads due to the contraction and extension of the coil spring 40 according to the vertical movement. By damping the upper plate 10 can be maintained in a horizontal state to stably support and protect the enclosure (C).

That is, when the seismic force is greater than the static friction force, the movement (displacement) of the carrier stems 30 connecting and supporting between the upper plate 10 and the low plate 20 and the elastic action of the coil spring 40, such as organic operation and It can respond stably to longitudinal waves generated from any and all directions among seismic waves by its action.

Moreover, even if an unbalanced load is transmitted from the enclosure (C) to any one of the carrier stems (30), the elastic action of the coil spring (40) and the action of the grid barrier (50) that flexibly and elastically supports it in the horizontal direction Since it does not move excessively in either direction, it is possible to reduce the vibration duration as well as increase the dispersion effect of vibration by preventing it from operating excessively in either direction.

That is, the carrier stem 30 can absorb vibration energy while limiting the displacement of the coil spring 40 due to the interference of the grid barrier 50 in the process of lifting and lowering, thereby reducing the size and strength.

In addition, the grid barrier 50 slides in the forward, backward, left and right directions by the deformation and displacement of the coil spring 40 to induce the displacement of the coil spring 40 more naturally and smoothly, thereby When the coil spring 40 is twisted in the horizontal direction due to factors, the distortion is minimized to prevent deformation or damage (disassembly), and when vibration is applied to the enclosure (C), it rapidly shifts to either side. It can be restored and restored quickly and safely to its original state.

Therefore, it is possible to maximize the damping capacity to more effectively absorb the compressive load (vertical load) of the enclosure (C) and the shear load (horizontal load) and vibration caused by movement displacement such as bending that occurs at the same time and dissipate it as heat. have.

In addition, it prevents the enclosure (C) from easily shaking or tilting due to external forces, earthquakes and vibrations, and minimizing the moving distance to prevent internal wiring and grounding failures in the enclosure (C) or damage and damage to various power control devices. It is possible to significantly improve seismic strength and seismic safety, such as preventing the enclosure (C) from falling (falling over) and leaving the installation place (position).

On the other hand, the present invention is not limited by the above-described embodiment and the accompanying drawings, and can be variously modified and applied in various ways not illustrated within the scope without departing from the technical spirit of the present invention, as well as each It is apparent to those of ordinary skill in the art to which the present invention pertains that it can be widely applied by changing the substitution of components and other equivalent embodiments.

Therefore, the contents related to the modification and application of the technical features of the present invention should be interpreted as being included within the technical spirit and scope of the present invention.

10: upper plate 11: fixing bolt
12: first stopper 13: pin pocket
20: low plate 21: tap hole
22: second stopper 23: guide hole
30: carrier stem 31: spring seat
32: support pin 33: sliding pin
34: face 40: coil spring
50: grid barrier 51: clearance hole
52: first joint slit 53: lying panel
54: second joint slit 55: upright panel
60: casing C: enclosure (case)

Claims (3)

An upper plate 10 having a fixing bolt 11 for fixing to the lower portion of the enclosure (C) coupled to the center, and having at least one first stopper 12 formed on both sides, respectively;
A plurality of pin pockets (13) formed in all directions around the fixing bolt (11) on the lower surface of the upper plate (10);
a low plate (20) disposed at a predetermined distance below the upper plate (10), having a tap hole (21) in the center, and having at least one second stopper (22) formed on both sides, respectively;
a plurality of guide holes 23 drilled in all directions around the tap hole 21 of the low plate 20;
a plurality of carrier stems 30 arranged at regular intervals in all directions between the upper plate 10 and the low plate 20 to support the upper plate 10;
a spring sheet 31 integrally formed at a predetermined height above the carrier stem 30;
a support pin (32) integrally formed on the upper surface of the spring sheet (31) so as to be fitted in the pin pocket (13);
a sliding pin (33) integrally formed at a lower portion of the carrier stem (30) to move along the guide hole (23);
a face 34 integrally formed between the spring seat 31 and the sliding pin 33 so as to contact the upper surface of the low plate 20 by the compression action of the coil spring 40;
The carrier stem ( 30) a plurality of coil springs 40 disposed on the low plate 20 while wrapping the lower part;
It is installed to move freely between the coil springs 40 on the low plate 20 , and the upper plate 10 and the carrier stem 30 are smoothly raised and lowered by the elastic action of the coil springs 40 . a grid barrier (50) for maintaining an interval between the coil springs (40) arranged in front, back, left and right with respect to the center of the fixing bolt (11) within a certain range while guiding the movement;
The upper plate 10 covers the circumference of the upper plate 10 and the low plate 20, and the upper plate 10 is movable in the vertical and horizontal directions at positions corresponding to the first stoppers 12. A first scope hole 61, each larger in size than the first stopper 12, is drilled, and the second stopper is positioned corresponding to the second stoppers 22 so that the low plate 20 is movable in the left and right directions. (22) a casing (60) in which a second scope hole (62) having a size larger than that of each is drilled;
Including, the grid barrier 50,
A clearance hole 51 communicating in a straight line with the tap hole 21 of the low plate 20 is formed in the center of the lower end, and at the upper edge, a pair of half the height is formed at an interval wider than the width of the clearance hole 51 The first joint slit 52 is formed a lying panel (53);
A pair of upright panels ( 55);
Binders 10 to 35 are respectively formed on the lower surface of the lying panel 53 and the lower surface of the upright panel 55 in contact with the upper surface of the low plate 20, and reduce frictional resistance by making the slip smooth and smooth. a first coating layer 56 comprising weight%, 10 to 20% by weight of a solid lubricant, 0.5 to 5% by weight of an additive, and 20 to 70% by weight of a solvent; and
A second coating layer ( 57);
Seismic isolation type waterside panel further comprising a. delete delete

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