KR101870779B1 - Earthquake Resistant Electrical Switchboard - Google Patents

Earthquake Resistant Electrical Switchboard Download PDF

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Publication number
KR101870779B1
KR101870779B1 KR1020170176926A KR20170176926A KR101870779B1 KR 101870779 B1 KR101870779 B1 KR 101870779B1 KR 1020170176926 A KR1020170176926 A KR 1020170176926A KR 20170176926 A KR20170176926 A KR 20170176926A KR 101870779 B1 KR101870779 B1 KR 101870779B1
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KR
South Korea
Prior art keywords
plate
switchboard
support
ground
supporting
Prior art date
Application number
KR1020170176926A
Other languages
Korean (ko)
Inventor
김성순
Original Assignee
(사)힘찬장애인복지회
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Priority to KR1020170176926A priority Critical patent/KR101870779B1/en
Application granted granted Critical
Publication of KR101870779B1 publication Critical patent/KR101870779B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/021—Decoupling of vibrations by means of point-of-contact supports, e.g. ball bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
    • F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
    • F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26—Casings; Parts thereof or accessories therefor
    • H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26—Casings; Parts thereof or accessories therefor
    • H02B1/50—Pedestal- or pad-mounted casings; Parts thereof or accessories therefor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/54—Anti-seismic devices or installations

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

The present invention relates to a switchboard having anti-vibration and earthquake-proof functions. More specifically, anti-vibration and earthquake-proof functions are secured by a single module, so the switchboard can be safely protected from an earthquake by allowing an initial switchboard device state to be maintained without a change even when vertical vibration, horizontal vibration, and ground change of the surface of the ground caused by an earthquake are simultaneously generated or are generated at time intervals. To this end, the switchboard having anti-vibration and earthquake-proof functions comprises: a switchgear; a vertical vibration-proof unit installed at the direct lower part of the switchgear and fixing and supporting the switchboard; a horizontal vibration-proof unit installed at the lower part of the vertical vibration-proof unit to support the vertical vibration-proof unit; and a ground surface change responding unit provided at the lower part of the horizontal vibration-proof unit to be fixed to the surface of the ground and supporting the horizontal vibration-proof unit.

Description

Earthquake Resistant Electrical Switchboard "

The present invention relates to a switchgear having a vibration and earthquake-proof function capable of minimizing damage from vibrations in various directions generated by an earthquake and changes in the ground caused by the vibration.

The earthquake-induced seismic wave is divided into an actual wave and an L wave, which is a surface wave. The actual wave is divided into a P wave, which is a longitudinal wave, and an S wave, which is a transverse wave. The L wave which is a surface wave is classified into a Rayleigh wave and a Love wave. It is transmitted differently on the ground depending on the direction of the source and the structure and strength of the rock lying between the source and the surface. Normally, when an earthquake occurs, vertical vibration and horizontal vibration, which directly strike the structure on the ground, occur one after another. In this process, the ground change that causes the structure to be tilted, twisted, .

The present invention relates to a transmission and reception system capable of responding to vibrations and ground changes caused by an earthquake. Generally, a transmission and reception system is a system that receives high-voltage power from a power plant or a substation and distributes the power and voltage required for the facility And various power facilities such as a transformer, a breaker, a converter and a relay are built in a square enclosed type switchgear, and the weight is from about 500 kg to about 7 tons depending on the built-in power facility. The above-mentioned switchgear is vulnerable to an earthquake because electric facilities are electrically connected (contact point, etc.), so that when an earthquake occurs, it will cause various accidents (short, fire, etc.) caused by the vibration.

Accordingly, in the prior art, most of the prior arts can cope with the vertical vibration and the horizontal vibration to some extent, while the floor changes due to the vibration (such as warping and tilting) Load and the like), and there is a problem that the seismic function is lost. On the other hand, the prior art has been pointed out that the simple structure of placing the spring between the ground and the switchboard is not suitable for the heavy weight switchboard.

(KR) Patent No. 1788173 (KR) Patent No. 1765535 (KR) Patent No. 1783010 (KR) Patent No. 1749589

SUMMARY OF THE INVENTION The present invention has been made to solve the problems in the prior arts, and it is an object of the present invention to provide a vibration damping device capable of vibrating with various directional vibrations and actively / Function to be secured.

Yet another object of the present invention is to provide a vibration isolation and an earthquake-proof function without obstacle even in a heavy-load power transmission line.

Disclosure of Invention Technical Problem [10] The present invention provides a switchboard having a dustproof and earthquake-resistant function, comprising: a switchboard; A vertical straight-forward rectilinear section provided directly under the transmission / reception section for fixing and supporting the transmission / reception section; A horizontal vibration damping unit installed at a lower portion of the horizontal diaphragm to support the vertical vibration damping unit, and a ground change corresponding unit fixed to the ground below the horizontal vibration damping unit and supporting the horizontal vibration damping unit. .

The vertical vibration damping unit may include: a mounting plate on which a bottom surface of the power distribution panel is seated / fixed on an upper surface; A first support plate disposed at a lower portion of the mounting plate at a predetermined distance from the mounting plate; A coil spring mounted between the mounting plate and the first supporting plate; The horizontal vibration preventing part may include a second supporting plate provided below the first supporting plate with a predetermined gap between the first supporting plates; Wherein the top surface of the bottom of the base plate is fixed to the bottom of the bottom of the second base plate, And a space is formed between the base plate and the second support plate so that three or more elastic bodies are disposed on the edge between the second support plate and the base plate.

The present invention provides a vertical vibration and vibration suppression unit and a floor change correspondence unit sequentially installed from the top to the bottom in order to realize a vibration and seismic configuration in one module, It is possible to maintain the state of the first switchgear device unchanged. This effect can be effectively prevented by preventing the power outage, the short circuit, and the shortage of the switchgear due to the earthquake, Short-circuit, and electric shock.

Further, the present invention is also applicable to all kinds of power transmission and distribution panels because the dustproof and earthquake-resistant portion is robust and can be used for heavy and heavy power transmission and distribution.

Figure 1 shows an exemplary embodiment of the present invention
FIG. 2 is a cross-sectional view of a dust-
Fig. 3 is a diagram illustrating an example of the operation of the horizontal vibration-
FIG. 4 is a diagram illustrating an example of the action of the ground change corresponding part of the present invention
5 (a) and 5 (b) are plan views illustrating a case where the sliding member applied to the horizontal vibration preventing portion is a ball
6 is another example of the ground change coping part of the present invention.

The present invention will now be described in detail with reference to the accompanying drawings. It should be understood, however, that the appended drawings may be exaggerated, omitted, or schematically illustrated for convenience of description, and the terms and names used in the description are intended to be implicitly construed according to the shape, And the description of the direction is determined based on the direction originally presented from the first drawing presented, and the description of the position is determined based on the center of each structure or the center of the circle. And specific descriptions of well-known and commonly-used techniques may be omitted to avoid obscuring the subject matter, or to be omitted or replaced with a simple code or name.

The switchboard with the dustproof and earthquake-resistant function according to the present invention is composed of a switchboard (S) and a dustproof and dustproof part (S1) which is sequentially implemented immediately below the switchboard (S) to support a switchboard, (S1) can be installed in several places at the corner of the bottom of the switchboard (S) or at regular intervals, and can be installed at the center of the bottom of the switchboard Which is composed of a vertically elongated rectangular parallelopid 10, a horizontal vibration damping portion 20 and a ground change coping portion 30.

The vertically asymmetric portion 10 of the dustproof and dustproof portion S1 is composed of a mounting plate 11, a first supporting plate 12, a coil spring 13 and an elastic supporting member 14, The first support plate 11 and the first support plate 12 are vertically arranged with a predetermined space therebetween and a coil spring 13 is provided at an edge portion thereof and an elastic support member 14 is provided at the center thereof, A cushion is given. Here, the elastic support member 14 is preferably a rubber member capable of safely supporting a weight-saving switchboard, but it may be a coil spring or a leaf spring equivalent to the action of the above rubber member. The standing state of the coil spring 13 and the elastic supporting member 14 can be stably maintained when the bottom surface of the mounting plate 11 and the top surface of the first support plate 12 are fitted into grooves The support of the mounting plate 11 can be made firm.

The horizontal vibration damping portion 20 of the dustproof and dustproof portion S1 includes the first support plate 12 of the rectilinear far-right wing portion 10, A narrow gap 22 is formed between the bottom surface of the first support plate 12 and the top surface of the second support plate 21 and the gap 22 is formed between the first and second support plates (21) so as to be slidable between the first and second supporting plates (12, 21). The sliding member 23 may be a conventional plain rubber, but may also be a ball. If the slide member 23 is made of a ball, the ball is received between the bottom surface of the first support plate 12 and the grooves 121 and 211 formed on the upper surface of the second support plate 21 so as to be prevented from being separated The grooves 121 and 211 are preferably formed in the shape of a donut when viewed from the top in the plan view (FIG. 5 (a)). However, It is also possible to arrange a plurality of radial shapes after forming themselves into a circle.

The ground change responding portion 30 of the vibration damping and dustproof portion S1 includes a base plate 31 fixed to the second base plate 21 of the horizontal vibration damping portion 20 and the ground G, A predetermined space 33 is secured between the second support plate 21 and the base plate 31. A semi-spherical hemispherical groove 212 is formed in the center of the bottom of the second support plate 21, 31 is connected to the upper end of the hemispherical surface 311 formed at the center of the upper surface, the second support plate 21 is supported by the foundation plate 31. A plurality of elastic members 32 are arranged radially along the outer periphery of the hemispherical surface 311 at the edges of the second support plate 21 and the base plate 31 so that the elastic members 32 So that the edge of the second support plate 21 can be elastically supported. The ground G may be a concrete laid on a ground surface. The elastic body 32 may be made of a material such as a coil spring, a leaf spring, or a buffer rubber. When the base plate 31 is horizontally rotated by an earthquake The upper and lower ends of the elastic body 32 are inserted into the lower groove formed in the lower surface of the second support plate 21 and the upper groove formed in the upper surface of the base plate 31 It is preferable that the number of the first and second support plates 21 and 22 is three or more.
That is, a lower groove into which the upper end of the elastic body 32 is inserted is formed at a position where the elastic body 32 is positioned at the edge of the second support plate 21, and an elastic body 32 is positioned at the edge of the base plate 31 An upper groove into which the lower end of the elastic body 32 is inserted is formed will be.

When the vertical vibration is applied to the switchboard (S) due to the earthquake, the vertical vibration is canceled by the coil spring (13) and the elastic support member (14) of the rectilinear far- Even if the base plate 31 and the second support plate 21 are horizontally shaken by the horizontal vibration of the ground G when horizontal vibration is applied to the switchboard S, 1 by the sliding member 23 placed between the first and second support plates 12 and 21 to prevent horizontal flow of the first support plate 12 (see FIG. 3).

When the ground level changes due to horizontal vibration and vertical vibration generated from the earthquake and the ground is inclined horizontally, the second floor plate 21 and the hemispherical surface The horizontal and vertical vibration damping units 10 and 20 on the base plate 31 are rotated in a state where they are connected to the hemispherical groove 212 of the second support plate 21 So that the switchgear S can be protected from tilting ground changes. At this time, the elastic body on one side disposed at the edge between the second support plate 21 and the base plate 31 is compressed, and the elastic body of the other side is stretched so that the ground surface G is maintained in the horizontal direction, It is possible to horizontally support the switchboard (S) in a flexible manner. The inclined angle of the ground G can be adjusted by the width of the space 33. [

Next, when the ground G is twisted in the horizontal direction or the like, the hemispherical surface 311 rotates about the hemispherical groove 212, so that the switchboard S can be protected from the ground change of the twist have. In this case, since the second supporting plate 21 and the elastic body 32 of the base plate 31 are twisted and elasticity is generated, the variable action such as distortion of the structure above the second supporting plate 21 is minimized do.

In the case where the sliding member 23 provided on the bottom surface of the first support plate 12 and the upper surface of the second support plate 21 is made of a ball by the horizontal vibration preventing portion 20 of the dustproof and dustproof portion S1, When the bottoms of the grooves 121 and 211 formed in the grooves 121 and 211 formed in the grooves 121 and 211 formed in the grooves 121 and 211 are horizontally moved, The first support plate 12 is automatically returned through the curvature of the first support plate 12 to return to the initial state (a state in which the first and second support plates are vertically disposed). At this time, the first support plate 12 can be raised due to the curvature of the bottoms of the grooves 121 and 211 when the ground surface is horizontal. This rise is caused by the coil spring 13 of the rectilinearly- Is accomplished without obstruction by the retraction force of the support member 14. [

6, when the elastic body 32 between the base plate 31 and the second support plate 21 is inclined as shown in Fig. 6, the elastic body 32 between the second support plate 21 and the base plate 31 is supported Since the upper surface of the base plate 31 is inclined, the elasticity of the elastic body 32 is exerted in a direction opposite to the inclination angle of the base plate 31, And the supporting force (supporting force) of the second support plate 21 is also improved.

In summary, the present invention is characterized in that the ground change corresponding portion 30 based on the hemispherical surface 311 is constituted in the base plate 31 fixed to the ground G and the hemispherical surface 311 By implementing the horizontal vibration damping portion 20 and the vertical vibration damping portion 10 successively on the basis of the horizontal vibration damping portion 20 and the vertical vibration damping portion 10 in this order, it is possible to secure all the earthquake vibrations including the horizontal vibration and the vertical vibration And is also excellent in the ability to respond to ground changes, so that the protection of the switchboard (S) from conduction and breakage can be made close to perfection. In spite of this action, the construction is simplified due to the small number of components, the reliability of dustproof and earthquake-proof is secured, and a switchboard having an excellent maintenance and repair function can be obtained.

Hereinafter, materials of the coil spring 13 and the elastic body 32 will be described.

The switchgear having the dustproof and earthquake-proof function of the present invention is required to have high strength because it must withstand the continuous load, and when exposed to the external environment where it can be corroded by the brine included in the wind, It is preferable that the coil spring 13 and the elastic body 32 are formed of a material having corrosion resistance while maintaining the elasticity and strength of a predetermined level. In this embodiment, the material of the coil spring 13 and the elastic body 32 is proposed have.

The material of the coil spring 13 and the elastic body 32 is 30 to 50 parts by weight of zirconium, 20 to 60 parts by weight of titanium, 5 to 10 parts by weight of nickel, 5 to 8 parts by weight of chromium, 3 to 5 parts by weight.

The zirconium improves the corrosion resistance and increases the surface strength of the alloy. Titanium is used to lighten the alloy and to increase the strength, and nickel makes it easy to manufacture and process the spring. In addition, chromium is used for ease of manufacture and processing of springs, and has the function of supplementally increasing the strength and corrosion resistance of the alloy.

Aluminum is fused with zirconium to improve the workability, the weight of the alloy is reduced, and the elasticity is increased, so that productivity and productivity are improved due to ease of processing while maintaining the elasticity and strength of the spring and the elastic body.

The coil spring 13 and the elastic body 32 made of such materials have almost no change in inherent physical properties even under extreme environments and have excellent corrosion resistance that the surface and the like are not easily damaged even when they are exposed to moisture or other salt water components for a long time, There is an effect of having a high strength characteristic that is not easily broken by an external force.

In order to facilitate understanding of the principles and principles of the invention to be pursued in the present invention, the present invention is described with reference to the drawings and specific constituent elements included in the constitution of the present invention and its constitution, The structure, form, shape, arrangement, direction, and quantity of the constituent elements and their concrete constituent elements of the invention are determined in consideration of the principle to be pursued and may be variously changed as needed. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed and desired or desirable. It is. Accordingly, the present invention includes all of the above-described configurations, and the present invention is most preferably completed. However, the present invention can be completed by selecting or excluding some of the configurations described above according to cost reduction, manufacturing convenience, , One or a part of the constituent elements may be separated and combined with other constituent elements. In addition, each of the constituent elements described above may be independently applied to a technical field other than the technical field in consideration of the principle, purpose, function, role, operation, effect, and the like. The scope of rights of the present invention will be described with reference to the scope of the claims of the present invention.

Having thus far completed the description of the present invention, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims. It will be possible. Accordingly, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

S: Switchgear S1: Dust and corrosion resistant
10: Vertical straight forward direction elevation 11: Mounting plate
12: first support plate 121: groove
13: coil spring 14: elastic support member
20: horizontal vibration preventing part 21: second supporting plate
211: groove 212: hemispherical groove
22: space 23: sliding member
30: ground change counterpart 31: base plate
311: hemispherical surface 32: elastic body
33: space G: ground

Claims (2)

A switchboard (S);
A rectilinearly-straightgoing divergent part 10 provided directly below the switchboard S to fix and support the switchboard S;
A horizontal vibration damping portion 20 installed at the lower portion of the rectilinear far-right wing portion 10 to support the rectilinear far-right wing portion 10;
And a ground change corresponding part (30) provided below the horizontal vibration preventing part (20) and fixed to the ground (G) and supporting the horizontal vibration preventing part (20);
The rectilinear far-field portion 10 includes a mounting plate 11 on which the bottom of the switchboard S is seated / fixed on an upper surface thereof; A first support plate (12) disposed at a lower portion of the mounting plate at a predetermined distance from the mounting plate (11); A coil spring 13 mounted between the mounting plate 11 and the first supporting plate 12 and an elastic supporting member 14,
The horizontal vibration damping unit 20 includes a second support plate 21 provided below the first support plate with a predetermined interval between the first support plates 12; And a sliding member (23) disposed at an interval (22) between the first and second supporting plates (12, 21)
The ground change responding portion 30 allows the top of the hemispherical surface 311 at the center of the base plate 31 fixed to the ground G to be connected to the hemispherical groove 212 at the bottom of the second support plate 21, A space 33 is formed between the plate 31 and the second support plate 21,
A lower groove is formed at the edge of the second support plate 21 where the elastic body 32 is positioned and an upper end of the elastic body 32 is inserted. An elastic body 32 is provided at the edge of the base plate 31 An 'upper groove' into which the lower end of the elastic body 32 is inserted is formed at a position where it is positioned,
At least three elastic bodies (32) are placed on the edge between the second foot plate (21) and the base plate (31);
The elastic support member 14 is a rubber member capable of safely supporting a weight-saving switchboard,
The sliding member 23 is any one of a ball facing the bottom of the base rubber sheet or the first supporting plate 12 and a ball accommodated between the grooves 121 and 211 formed on the bottom of the second supporting plate 21, Which has a dustproof and earthquake resistant function. delete
KR1020170176926A 2017-12-21 2017-12-21 Earthquake Resistant Electrical Switchboard KR101870779B1 (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102096742B1 (en) * 2019-05-30 2020-04-02 박지연 Seismic Isolator for Distribution Board
CN112281904A (en) * 2020-11-12 2021-01-29 保定天威保变电气股份有限公司 Anti-seismic universal foundation structure and method for transformer
KR102322653B1 (en) 2020-05-27 2021-11-04 김인배 The earthquake-proof and vibration damping device
KR20210146751A (en) 2020-05-27 2021-12-06 김인배 The vibration damping device by the seismic wave
KR102371291B1 (en) * 2021-02-05 2022-03-11 윤대용 Power distributor having a seismic isolation structure with improved resilience
KR102450134B1 (en) 2022-04-15 2022-10-04 (주) 동보파워텍 Earthquake-proof Switchgear Equipped with Laminating Vibration-proof Rubber Pad and Base, Brace
KR102665638B1 (en) 2023-10-04 2024-05-13 (주)윌인코 Earthquake-resistant Switchgear Equipped with X-shaped Reinforcement and Buffer Base

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5872746A (en) * 1981-10-26 1983-04-30 Kanzo Takei Device for preventing vibration or resonance by acoustic appliance
JPH1030360A (en) * 1996-07-17 1998-02-03 Fujita Corp Base isolation device by use of rail guide provided with restoration structure
JP2006336815A (en) * 2005-06-06 2006-12-14 Seiwa:Kk Base isolation device
KR101749589B1 (en) 2017-04-07 2017-06-21 주식회사 한국이알이시 Distribution board with earthquake-proof device
KR101765535B1 (en) 2017-05-17 2017-08-07 주식회사 현대콘트롤전기 Power Distributing Board with the cable connector to absorb earthquake
KR101783010B1 (en) 2017-04-28 2017-09-28 사단법인 꿈드래장애인협회 A Switchgear having a reinforced earthquake-proof function
KR101788173B1 (en) 2017-07-10 2017-10-19 (주)이지시스템 a earthquake-proof panel board

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5872746A (en) * 1981-10-26 1983-04-30 Kanzo Takei Device for preventing vibration or resonance by acoustic appliance
JPH1030360A (en) * 1996-07-17 1998-02-03 Fujita Corp Base isolation device by use of rail guide provided with restoration structure
JP2006336815A (en) * 2005-06-06 2006-12-14 Seiwa:Kk Base isolation device
KR101749589B1 (en) 2017-04-07 2017-06-21 주식회사 한국이알이시 Distribution board with earthquake-proof device
KR101783010B1 (en) 2017-04-28 2017-09-28 사단법인 꿈드래장애인협회 A Switchgear having a reinforced earthquake-proof function
KR101765535B1 (en) 2017-05-17 2017-08-07 주식회사 현대콘트롤전기 Power Distributing Board with the cable connector to absorb earthquake
KR101788173B1 (en) 2017-07-10 2017-10-19 (주)이지시스템 a earthquake-proof panel board

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102096742B1 (en) * 2019-05-30 2020-04-02 박지연 Seismic Isolator for Distribution Board
KR102322653B1 (en) 2020-05-27 2021-11-04 김인배 The earthquake-proof and vibration damping device
KR20210146751A (en) 2020-05-27 2021-12-06 김인배 The vibration damping device by the seismic wave
CN112281904A (en) * 2020-11-12 2021-01-29 保定天威保变电气股份有限公司 Anti-seismic universal foundation structure and method for transformer
CN112281904B (en) * 2020-11-12 2021-12-21 保定天威保变电气股份有限公司 Anti-seismic universal foundation structure and method for transformer
KR102371291B1 (en) * 2021-02-05 2022-03-11 윤대용 Power distributor having a seismic isolation structure with improved resilience
KR102450134B1 (en) 2022-04-15 2022-10-04 (주) 동보파워텍 Earthquake-proof Switchgear Equipped with Laminating Vibration-proof Rubber Pad and Base, Brace
KR102665638B1 (en) 2023-10-04 2024-05-13 (주)윌인코 Earthquake-resistant Switchgear Equipped with X-shaped Reinforcement and Buffer Base

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