JP2003184949A - Isolation system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an isolation function for a transforming instrument or the like. <P>SOLUTION: A plurality of the isolation systems 7 are installed on a stand 2, and the isolation system transmits a gravitational load of the stand to a sliding face 10 by slidably keeping in contact with the level, flat upward sliding face in a horizontal direction. The isolation system comprises an upper member 11 arranged on a determined position to the stand when the isolation system is installed, and a lower member 12 capable of adjusting a relative position with the upper member in a vertical direction by a screw or the like and keeping in contact with the sliding face. A damping device, which restricts a relative movement in a horizontal direction between the stand and sliding face, can be also provided. The damping device comprises a horizontal restriction member 26 having a through-hole 28 which is installed on the stand and passes through in the vertical direction, and a flexible elastic and plastic member 25 which is relatively fixed on the sliding face and passes through the through-hole extended in the vertical direction. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a seismic isolation device,
In particular, the present invention relates to a seismic isolation device suitable for equipment such as large-scale transformers installed in large-scale substations and power supply rooms of large-scale industrial plants.

[0002]

2. Description of the Related Art Generally, substation equipment installed in a substation or an industrial plant power supply room is displaced due to a storm or an earthquake,
As a seismic structure to prevent the unit from falling over, it is connected to the foundation floor to be installed by fixing members such as bolts.

A conventional example of a method for fixing a large-sized substation equipment installed in a large-scale substation or a large plant power supply room will be described below with reference to FIG. Among the devices installed in large-scale substations and large-scale plant power supply rooms, there are transformers, for example, which are large and heavy. The transformer is composed of a substation device body 1, a power line 5 for inputting and outputting electric power, and a bushing 4 which is an insulating material. In addition, such a seismic resistant structure in the substation equipment is connected and fixed by the support base 2 on which the substation equipment body 1 is installed and a plurality of embedded metal fittings 43 supporting the substation equipment main body 1, so that an earthquake load acting during an expected earthquake It is configured to endure and maintain a fixed state. The embedded metal fitting 43 is made of a metal rod and is embedded in the foundation floor of the foundation 3 installed in the ground 6.

In the seismic resistant structure of the substation equipment body 1 thus constructed, a large seismic acceleration occurs at the time of an earthquake, so that the substation equipment body 1 has a moving force which tends to shift horizontally as an earthquake load. The high center of gravity causes tipping force. At this time, the seismic load is applied to the embedded metal fitting 43 by horizontal shearing force and pulling force. The embedded metal fitting 43, which is a fixing member, is designed and manufactured as a structure having a strength that can withstand the seismic load assumed in the seismic design. In this way, by fixing the substation device body 1 to the foundation 3 against an assumed earthquake, damage such as a fall due to the earthquake is prevented.

[0005]

The above-mentioned conventional seismic structure for substation equipment has the following five problems. One is that when the substation equipment is fixed to the foundation by a strong fixing member, the seismic acceleration at the installation site in the building is amplified more than expected due to earthquake motion, or when a comparatively large earthquake occurs, the fixing member is damaged. If the transformer is kept fixed without doing so, the transformer will be directly subjected to a large seismic load. For this reason, in the substation equipment, parts that are vulnerable to earthquakes, such as bushings made of so-called crockery (ceramics) materials, have much weaker strength than metal members, and therefore break or break, resulting in loss of insulation function. It may occur, damage the power line or the main body of the transformer device, and lose its function as a transformer device. That is, there is a problem that even if the fixing strength of the fixing member of the support portion is too high, the substation device is adversely affected.

Second, when a large earthquake occurs and an earthquake load exceeding the designed seismic force acts on the substation equipment, or when the seismic acceleration at the installation site in the building is greatly amplified by the earthquake motion, it is supported. The fixing member of the part breaks. In this case, not only is it subjected to a large earthquake load, but the substation equipment loses its fixing function, causing large slipping and falling phenomena, bushing,
There is a high possibility that the power line will be broken or cut, and the substation equipment body will be seriously damaged. In addition, due to a large slip phenomenon, contact and collision with other equipment will cause a series of destruction and damage phenomena that destroy other equipment, leading to loss of function of the entire substation equipment system and receiving power supply. There is a risk of causing and increasing chain-wise damage to the entire industrial plant, public facilities, hospitals, housing, and social and industrial systems.

Further, if such a chain damage is amplified, there is a possibility that a long-term loss of the function of the social infrastructure of electricity causes a great adverse effect on the recovery activity of the whole society after the earthquake. 1995 Hyogoken Nanbu Earthquake, 1
In the 1999 Ajaeli earthquake in Turkey and the Chi-Chi earthquake in Taiwan, such damage to the power infrastructure became a social problem. It has been announced by the government and the Meteorological Agency that the Tokai earthquake, Tonankai earthquake, Nankai earthquake, etc. will occur within a few decades in Japan in the near future with a very high probability. In other words, in the current earthquake-resistant structure of substation equipment, a large earthquake that exceeds the design seismic load not only damages the substation equipment body, but also has a great adverse effect on peripheral equipment / systems, peripheral industrial plants, and society. was there.

Third, most of the existing substation equipment operating in the present power supply infrastructure are designed, manufactured and installed in accordance with the past seismic design standards, so that they are sufficient for the seismic load of the expected earthquake ground motion that has been reviewed in recent years. Not only we can not respond,
For substation equipment that has been used outdoors for a long period of time, the original design strength of supporting members and fixing members may have deteriorated due to deterioration and corrosion. It is expected that such substation equipment will be seriously damaged by the large-scale earthquake that is currently expected. For such substation equipment, it is necessary to take additional reinforcement measures and earthquake resistance / isolation measures, but the supporting members and fixing members of large and heavy substation equipment are modified.
There was a problem that re-installation was extremely difficult in terms of countermeasure design method, cost, installation method, installation work period, etc.

[0009] Fourth, although various new seismic resistance and seismic isolation measures can be applied to the newly installed substation equipment, it is possible to solve the above-mentioned first problem of the foundation fixing method using the conventional fixing member. As another measure, the spring-supported seismic isolation system in which a substation is supported by a soft spring in the horizontal direction such as laminated rubber has the following problems. The spring-supported seismic isolation method, in which the substation equipment is horizontally supported by soft springs such as laminated rubber, is the predominant frequency and seismic vibration of the ground where the natural frequency composed of the substation equipment and laminated rubber is installed. By making it sufficiently lower than the predominant vibration component region of, it is possible to avoid resonance with the ground and earthquake motion, and to greatly reduce the seismic acceleration response of the substation equipment, that is, the seismic load acting. However,
Relative displacement of soft springs such as laminated rubber is greatly amplified at the expense of greatly reducing the acceleration response.

In the case of an earthquake with a seismic intensity of 7 classes such as the Hyogoken Nanbu Earthquake and the Taiwan Earthquake, a relative displacement of at least several tens of centimeters may occur. Therefore, the power line connected between the substation device and other peripheral devices is greatly pulled, and there is a high possibility that the power line will be cut or the insulator supporting the power line will be broken or broken. In addition, since the seismic isolation device itself is expensive and has a large structure, the installation cost is high because it is necessary to drastically change the structure of the existing support frame and foundation.

Further, since the spring is supported by a soft spring, the main body of the substation receives a large wind load or a comparatively small earthquake load during strong winds, storms, weak earthquakes, or light earthquakes, and the springs are deformed according to the wind load or the earthquake load. Occurs. The amount of displacement is not as great as a large earthquake, but it occurs relatively often, so that the power line connected between the substation equipment and other peripheral equipment is pulled, and the power line and the insulator continue to receive the load.
In particular, the insulator has a low fatigue strength against repeated loading, so that the strength deteriorates and there is a high possibility of breakage.

As described above, in the conventional seismic isolation method using a soft spring support such as laminated rubber, the installation cost is high, and relative displacement occurs with respect to all events from wind and small earthquakes to large earthquakes. Therefore, there is a problem that the power lines and the insulators are frequently subjected to a tensile load and are likely to be damaged or broken.

The fifth is one of the measures that can solve the above-mentioned fourth problem in the spring-supported seismic isolation system in which the substation equipment is supported horizontally by a soft spring such as laminated rubber.
Seismic isolation method using sliding bearing (sliding friction method)
1-371003) also has the following problems.

The seismic isolation device proposed in Japanese Patent Application No. 11-371003 “System floor and its construction method” employs a horizontal sliding method, and seismic load or wind load below a certain friction load. It does not slip on and functions as a fixing device. Also, when a large earthquake occurs and an earthquake load that exceeds the acting friction load occurs in the installed structure, slippage occurs and no load greater than the friction load is transmitted to the installed structure. And damage can be prevented.

The target of the seismic isolation device of this patent is a light desk on the floor in the building room or OA equipment which is relatively low in cost and has little effect when damaged, and damage to various equipment during an earthquake is minimized. The purpose of this is to protect employees who are working on the OA floor from difficulty, and because the supporting mass per seismic isolation device is at most several tens to 100 kg, each seismic isolation device It is simple and does not have the function of equalizing the supporting load acting on each seismic isolation device.
In such a patented seismic isolation device, the load on each seismic isolation device varies greatly depending on the layout and installation method of equipment, desks, document shelves, etc. installed on the floor. A large deviation from the seismic isolation system action center by the device, that is, eccentricity occurs.

When a comparatively large earthquake occurs in such a state, first, the seismic isolation device which receives a large supporting load and the fixing member supporting the seismic isolation device may be damaged. Next, if the seismic load exceeds the frictional force of the seismic isolation device and is activated, the seismic isolation device that receives a large supporting load and the fixing member that supports it will have a horizontal seismic load proportional to it. , These may break.

Further, not only the translational motion but also the rotational motion in the horizontal plane of the floor is excited by the eccentricity between the center of gravity and the seismic isolation center of the entire floor. May occur, and the equipment and shelves may fall over or be damaged. In addition, since the seismic isolation device on the floor outer periphery is subjected to a larger sliding displacement due to the excitation of the rotary motion, the seismic isolation device is damaged or the floor outer periphery collides with the wall because the slip amount exceeds the design assumption. Destroyed,
Eventually the entire floor may be destroyed.

If such a seismic isolation device structure for an OA floor is applied as it is to a large heavy equipment such as a large substation, the weight of the substation is several hundred tons and the supporting mass per seismic isolation device is several. Since the weight is from 1,000 kg to tens of thousands kg, the following problems may occur.

Since the support base for supporting a large and heavy substation equipment is large in size, the mounting height of each part of the support base may differ due to the distortion during manufacturing and the distortion when supporting a large weight. Since they are different, there is a high possibility that there will be large variations in the supporting loads of the multiple seismic isolation devices installed on the support frame. There is a high possibility that there will be variations from those that float from the foundation and do not share the load to those that share several times or more of the design load.

With the same structure as the seismic isolation device for the OA floor,
Since there is no function to uniformly adjust the support load of each seismic isolation device, the support load of each seismic isolation device varies widely, and the center of gravity of the entire structural system and seismic isolation acting force as a substation-equipped substation device Misalignment (eccentricity) occurs with the center. In this case, a large difference occurs between the center of gravity and the center of seismic isolation acting force, so during a large earthquake, a moment (rotational force) acts on the center of seismic isolation acting force due to the center of gravity of the structural system, and the OA
The abnormal behavior due to the rotational displacement similar to the case of the floor seismic isolation device may be amplified, resulting in great damage to the substation equipment.

Furthermore, in addition to a large supporting load, a seismic isolation device that receives a large supporting load during an earthquake receives a large supporting load and a horizontal seismic load proportional to this supporting load. May be damaged. Such eccentricity and the influence of variations in the supporting load may overlap each other, and eventually not only the main body of the substation equipment may be destroyed but also the substation equipment system including peripheral substation equipment may be seriously damaged or affected.

In order to solve such a problem, if the seismic isolation support points are set to three points, a uniform load is applied to each seismic isolation device in principle, but in a large structure such as a large transformer device. Since it is necessary to disperse the supporting load, there is no choice but to support with more than three seismic isolation devices. In such a case, it is inevitable that the seismic isolation devices that bear the load support have large variations in the support load as described above. Therefore, when supporting large and heavy substation equipment with a large number of seismic isolation devices, in order to avoid increasing the supporting load per seismic isolation device and to disperse and homogenize it, By seismic unit,
The function of adjusting the supporting load is essential.

As described above, as a measure for earthquake resistance of substation equipment, it can be installed at a low cost, and it is fixed by a firm fixing function against the design assumed seismic force and wind load, and the substation equipment is protected against storms and relatively Protects from small earthquakes, and in case of large earthquakes above the design earthquake load, reduce the earthquake load acting on the substation equipment as much as possible so as not to cause serious damage, and also avoid damage to peripheral equipment There is an increasing demand for optimal seismic structure and seismic isolation / isolation measures that maintain and protect the functions of the entire substation equipment system to a minimum.

In order to apply the function of the seismic isolation device as proposed in Japanese Patent Application No. 11-371003 “System floor and its construction method” to large and heavy transformer equipment, The seismic isolation device itself should have sufficient structural strength and frictional members, and the seismic isolation device should be installed to adjust and equalize the supporting load of the seismic isolation device so that a large eccentricity of the center of action does not occur. It is necessary to add new functions such as suppressing behavior when abnormal behavior occurs.

The present invention has been made to solve the above-mentioned problems of the prior art, and can be easily applied to existing substation equipment to newly installed substation equipment, and can be manufactured and installed inexpensively with a simple structure. , An object is to obtain a seismic isolation device that can provide an optimal seismic isolation function for substation equipment.

[0026]

The present invention is to achieve the above object. According to the invention of claim 1, a plurality of them are attached to a pedestal, and the upper and lower sliding surfaces are substantially horizontal and flat. A seismic isolation device that slidably contacts in the horizontal direction and transmits the gravitational load of the gantry to the sliding surface, and an upper member that is arranged at a fixed position with respect to the gantry when the seismic isolation device is installed, It has a lower member that can adjust the relative position in the vertical direction with respect to the upper member and that is in contact with the sliding surface.

The invention of claim 2 is characterized in that, in the invention of claim 1, the adjustment of the relative position in the vertical direction is performed by a screw mechanism. Further, the invention of claim 3 is characterized in that, in the invention of claim 2, the upper member and the lower member have notches for twisting them relative to each other.

Further, the invention of claim 4 is characterized in that, in the invention of claim 2, a female screw is formed on the upper member, and a male screw which is screwed with the female screw is formed on the lower member. And

According to a fifth aspect of the invention, in the second aspect of the invention, the upper member is formed with a male screw, and the lower member is formed with a female screw that is screwed with the male screw. And

[0030] According to a sixth aspect of the present invention, in the first aspect of the present invention, a recess is formed in the lower surface of the lower member, and the slip is formed in the recess by projecting downward from the lower surface of the lower member. The friction member is attached so as to be in contact with the surface.

According to a seventh aspect of the present invention, in the first aspect of the present invention, the gantry has a substantially horizontal and flat downward facing pad facing surface, and is sandwiched between the pad facing surface and the upper member. And an elastic pad for transmitting the gravity load of the gantry to the upper member, and a friction coefficient at a contact portion between the pad facing surface of the elastic pad and the upper member,
The friction coefficient is larger than the friction coefficient at the contact portion between the sliding surface and the lower member.

The invention of claim 8 is characterized in that, in the invention of claim 1, there is further provided a damping device for suppressing relative movement in the horizontal direction between the gantry and the sliding surface.

According to a ninth aspect of the present invention, in the eighth aspect of the invention, the damping device is attached to the gantry and has a horizontal restraining member having a through hole penetrating in the vertical direction, and the sliding surface. A flexible elasto-plastic member that is relatively fixed, extends in the vertical direction, and penetrates the through hole.

Further, the invention of claim 10 is characterized in that, in the invention of claim 9, the elastoplastic member penetrates the through hole with a gap. In addition, claim 11
The invention of claim 10 is characterized in that the gap is smaller than the designed maximum horizontal relative displacement at a position where the elasto-plastic member penetrates the through hole.

According to a twelfth aspect of the present invention, in the ninth aspect of the invention, the horizontal restraining member is provided with a horizontal fixing member hole larger than the through hole, and a part of the horizontal fixing member hole is covered. Horizontal restraint gap adjustment member is attached,
The horizontal restraint gap adjusting member is provided with the through hole.

According to a thirteenth aspect of the present invention, in the ninth aspect of the present invention, the sliding surface is provided on one base, and a fixing member is fixed to the base. Is formed with an internal thread that opens upward, and a male thread that engages with the internal thread of the fixing member is formed at the lower end of the fixing member.

According to a fourteenth aspect of the present invention, there is provided the seismic isolation device for a substation equipment, which is installed between a foundation floor and a support frame on which the substation equipment is installed to reduce seismic motion transmitted from the foundation floor. A sliding surface formed on at least a part of the foundation floor surface, a plurality of slidable sliding members arranged on the sliding surface, and these sliding members are attached to the bottom surface to allow vertical height adjustment. It is characterized in that it comprises a plurality of columns and a support frame in which upper portions of these columns are at least constrained in the horizontal direction.

According to a fifteenth aspect of the present invention, in the fourteenth aspect of the present invention, the supporting column is composed of a lower supporting column having a sliding member attached to the lower surface thereof, a supporting frame on the upper surface thereof, and an upper supporting column constrained at least in the horizontal direction. , The lower support and the upper support are screw-connected in the vertical direction, and by the screw connection, the function of supporting the load on the support and adjusting the vertical gap between the lower support and the upper support is provided. Characterize.

According to a sixteenth aspect of the present invention, in the fourteenth aspect of the present invention, at least the upper portion of the lower support column is formed with a male screw, and the lower outer peripheral surface has at least two surfaces facing each other in the sectional direction. A structure having a notch at a portion or more, and a hole having a depth larger than the cross-sectional outer dimension of the sliding member arranged at a part of the lower lower surface thereof and smaller than the thickness of the sliding member and having a flat upper bottom. It is characterized by comprising a structure and the sliding member inserted and fixed in the hole structure.

According to a seventeenth aspect of the invention, in the fourteenth aspect of the invention, the upper strut corresponds to the male screw structure of the upper portion of the lower strut according to the sixteenth aspect, in which a part of the lower surface of the lower strut is directed upward inward. A structure in which an internal thread is formed, a structure in which a lower outer peripheral surface of the lower peripheral surface is cut out at least at two or more positions facing each other in the cross-sectional direction, and a part of the upper surface of the upper part is fixed and installed upward and at least the It is characterized in that the upper part is constituted by a rod-shaped structure formed by a male screw.

The invention of claim 18 is based on the invention of claim 14, wherein the lower column has a structure in which a female screw is formed in a part of the upper upper surface of the lower column toward the inside in the downward direction, and the upper outer peripheral surface has a cross section. A structure in which at least two surfaces facing each other in the direction are cut out, and a depth larger than the cross-sectional outer dimension of the sliding member arranged on a part of the lower surface thereof and smaller than the thickness of the sliding member, and the lower bottom is It is characterized in that it is constituted by a flat hole structure and the sliding member inserted and fixed in the hole structure.

According to a nineteenth aspect of the present invention, in the fourteenth aspect of the present invention, at least the lower portion of the upper strut is a male screw corresponding to the female screw structure formed on a part of the upper surface of the lower strut according to the fifth aspect. The formed structure, and the structure in which the upper outer peripheral surface is cut out at least at two or more places where the surfaces facing each other in the cross-sectional direction are fixed and installed upward on a part of the upper surface of the upper part, and at least the upper part thereof is a male screw. The formed rod-shaped structure is characterized in that it is configured.

[0043] According to a twentieth aspect of the present invention, in the invention of the fourteenth aspect, the upper column includes a rod-like member fixed and installed upward on a part of an upper surface of the upper column from below the support frame. A through hole provided in at least a part of the support plate at the lower part of the support base for penetrating the rod-shaped member of the upper strut has a hole for partially penetrating the rod-shaped member, and is a support member having flexibility in the vertical direction. Yes, a material having a contact friction coefficient with respect to the upper surface of the upper column and the lower surface of the support frame is larger than the friction coefficient between the sliding surface and the sliding member. A nut member having a female screw corresponding to this male screw is screwed into the male screw part on the upper part of the rod-shaped structure on the upper surface of the upper strut that has penetrated through the elastic pad that also functions as a transmission member, and the nut is installed on the support base. And characterized in that it is.

According to a twenty-first aspect of the present invention, there is provided a seismic isolation device for a substation equipment, which is installed between a foundation floor and a support frame on which the substation equipment is installed to reduce seismic motion transmitted from the foundation floor. A sliding surface formed on at least a part of the foundation floor surface, a plurality of slidable sliding members arranged on the sliding surface, and these sliding members are attached to the bottom surface to allow vertical height adjustment. It is characterized by comprising a plurality of struts, a support pedestal in which upper portions of these struts are constrained at least in the horizontal direction, and a plurality of damping devices arranged on the support pedestal and acting in a horizontal plane inward direction.

According to a twenty-second aspect of the present invention, in the twenty-first aspect of the present invention, the damping device includes a plurality of horizontal restraining members which are arranged on a support frame and have through holes extending in the vertical direction in a horizontal plane. For the restraint member, the lower part is installed in the fixed embedded member embedded in the foundation floor.
It is fixed, the upper part penetrates the through hole of the horizontal restraint member,
It is characterized in that it is constituted by an elasto-plastic member having a sufficient gap between the inner peripheral surface of the through hole and the outer peripheral surface thereof at least at the position of the through hole.

According to a twenty-third aspect of the present invention, in the twenty-first aspect of the present invention, the horizontal restraining member is fixed and fixed on the support frame, and is horizontally installed on the fixing member. A horizontal fixing member provided with a through hole such that the gap between the maximum outer diameter of the elasto-plastic member and the minimum inner diameter of the through hole is partly in the horizontal plane and is smaller than the designed maximum slip displacement in the seismic isolation device. It is characterized by being constituted by.

According to a twenty-fourth aspect of the invention, in the twenty-first aspect of the invention, the horizontal restraining member is fixedly installed on the support frame and is installed over the fixing member in a horizontal direction. The installation height can be arbitrarily installed on the fixed member, and the gap between the maximum outer diameter of the elasto-plastic member and the minimum inner diameter of the through hole is partly in the horizontal plane, and the design maximum in the seismic isolation device. A horizontal fixing member having a through hole that is smaller than the sliding displacement and a through hole having a minimum inner diameter smaller than the minimum inner diameter of the through hole of the horizontal fixing member, which is installed on the upper surface or the lower surface of the horizontal fixing member, It is characterized in that it is constituted by a horizontal fixing auxiliary member capable of arbitrarily adjusting a horizontal installation position on the horizontal fixing member.

According to a twenty-fifth aspect of the present invention, in the twenty-first aspect of the invention, the elasto-plastic member has a structure formed of a cylindrical rod of a metal member, and the lower portion has an outer diameter equal to or larger than the outer diameter of the upper portion. At least one arbitrary location on the upper part, which has a structure formed by a male screw, a structure in which the upper part which is not a male screw structure has a length exceeding the through hole position height of the horizontal fixing member of the horizontal restraining member, The outer peripheral surface has a structure in which at least two positions are cut away from the surface facing each other in the cross-sectional direction,
It is characterized by being configured.

According to a twenty-sixth aspect of the present invention based on the twenty-first aspect, the fixing embedding member is embedded and fixed in the foundation floor so that the height position of its upper surface is at least above the foundation floor surface. A structure formed as described above,
A structure in which a part of the upper surface corresponds to the male screw at the bottom of the elasto-plastic member toward the inside in the downward direction, and a female screw whose thread length is longer than the length of the male screw part of the elasto-plastic member is formed. Characterize.

[0050]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a seismic isolation device according to the present invention will be described below with reference to the drawings. Here, the seismic isolation device for substation equipment will be described as an example, but it goes without saying that it can be applied to other equipment. Further, in the following description, common or similar parts between the related art and the respective embodiments will be denoted by the same reference numerals, and redundant description will be appropriately omitted.

[First Embodiment] First, the first embodiment will be described with reference to FIGS. In FIG. 1, the foundation 3 is installed by being embedded in the ground 6. On this foundation 3, a sliding plate 1 whose upper surface is horizontal, flat and smooth
A plurality of 0s are arranged and fixed. On the slide plate 10, the support frame 2 in which the substation main body 1 is installed is the slide plate 1
It is supported by a plurality of columns 8 having a friction member 9 attached to the surface in contact with 1. A power line 5 is connected to peripheral devices via a bushing 4 on the upper part of the substation device body 1.

The seismic isolation device 7 having the seismic isolation function is the sliding plate 1
It is composed of 0 and columns 8 and 12. The sliding plate 10 is
The plate is a substantially circular or square plate and is fixed to the base 3 by adhesion or bolts. A suitable material for the sliding plate 10 is a stainless steel plate, a steel plate hard-plated with chromium or the like, or a steel plate coated with a fluororesin material. The surface of the sliding plate 10 is horizontal, is flat, and has a pillar 8 to be described later.
In order to smoothly slide the friction member 9 on the lower surface with a predetermined friction force, the surface is polished to form a smooth sliding surface.

With such a structure, the friction member 9 does not slide with respect to a horizontal load acting on the transformer device body 1 due to a storm or a small earthquake, which is usually less than the friction force, and acts as a fixing device. In addition, when a large earthquake causes a horizontal seismic load greater than a certain frictional force to act on substation equipment, the substation acts as a seismic isolation that prevents slipping of the seismic force above the frictional force, causing damage to the substation equipment. Can be prevented.

The pillars 8 are slidably installed one by one in the substantially central portion of the upper surface of each sliding plate 10. As will be described later, the pillar 8 is roughly divided into an upper pillar 11 and a lower pillar 12.
(See FIGS. 2 to 5), which are screwed together, and the height of the entire column 8 can be adjusted by screwing the screws. With such a height adjusting function, by appropriately adjusting the heights of all the columns 8 supporting the support frame 2, the supporting loads acting on the columns 8 can be made substantially uniform. As a result, since there is no variation in the load distribution, it is possible to prevent some supporting columns from being damaged by an excessive supporting load, and it is possible to suppress the eccentricity of the center of gravity of the entire substation equipment. It is possible to prevent abnormal behavior such as rotational behavior of the substation device 1 during sliding during an earthquake.

Further, a friction member 9 is fixed to the lower surface of the lower portion of the support column 8 and slides in contact with the sliding plate 10. The material of the friction member 9 is softer than the material of the sliding plate 10. In the case of resin-based materials, fluororesin (for example, Teflon (registered trademark)) materials, resin materials containing oil and carbon, solid lubricants based on other resins, etc. are used, and brass, aluminum, etc. are used as metal-based materials. Is used. Since the sliding friction coefficient of the friction member 9 is determined by the material of the friction member 9, the material of the sliding plate 10 and its surface roughness, the friction coefficient required for seismic isolation design should be set by appropriately combining these. Is possible. That is, the optimum seismic isolation effect can be obtained by setting an appropriate frictional force of the seismic isolation device 7 according to the assumed seismic force of the installation location.

On the other hand, the size of the sliding plate 10 depends on the size of the installation site.
Considering the sliding displacement of the friction member 9 expected from the constant seismic force
Can be decided. For example, the maximum diameter of the friction member 9
Is D _f, The maximum expected slip displacement of a large earthquake is δ_STo
If the sliding plate 10 is a circular plate, at least the diameter
Is D_f+ 2 · δ_S The size of a square board
If at least one side is D_f+ 2 · δ_SThe size of This
Even if a large earthquake occurs, you can install a sliding plate 10 with a size like
The seismic isolation device 7 does not protrude from the slide plate 10
Sliding within the range of 10 and exerting the prescribed seismic isolation effect
You can

As shown in an enlarged view in FIG. 2, the columns 8 of the seismic isolation device 7 that supports the support frame 2 include a friction member 9, a lower column 12, an upper column 11, and an elastic pad 14 in the order of load transmission from the bottom. It consists of The friction member 9 is a sliding plate 10.
The elastic pad 14 is in contact with the supporting base 2 and transfers supporting load, seismic load or frictional force between the elastic pad 14 and the members in contact with each other.

As will be described later (see FIGS. 3 to 5), the upper strut 11 is formed with a female screw portion 19 toward the surface of the lower strut 12 which faces the upper strut 11. In addition, in the lower support column 12,
A male screw portion 13 corresponding to the female screw portion 19 is formed, and both are screwed to a certain depth, and the upper support 11
Alternatively, it is set so that a gap is formed between the lower column 12.

The upper strut 11 has a rod-shaped upper connecting member 15 which is thinner than the upper strut 11 from the vicinity of the center of the upper surface thereof upward.
Is attached. The upper connecting member 15 penetrates the supporting base 2 and has an upper region formed with a connecting male screw portion 16. The connecting screw portion 16 is provided with a washer member 18 on the surface of the supporting base 2, A fall prevention nut member 17 is screwed in from the direction. A small gap is set between the captive nut member 17 and the washer member 18.

With such a configuration, the upper strut 11 and the lower strut 12 are screwed together to adjust the gap between the strut height adjusting male threads 13, and finally to change the strut height. You can As a result, it becomes possible to suppress variations in the supporting load acting on the plurality of columns 8 arranged. Further, when assembling and installing the substation device body 1, the support base 2, the seismic isolation device 7, etc. by the upper connecting member 15 and the fall prevention nut member 17 installed on the upper connecting member 15,
For example, when the seismic isolation device 7 is temporarily fixed to the support base 2 and the support base is installed by hanging the crane,
It is possible to prevent damage caused by falling off.

As shown in FIGS. 3 to 5, in this embodiment, the column height adjusting male screw portion 13 is formed on the upper portion of the lower column 12. The friction member 9 in contact with the sliding plate 10 is
It is fitted into the friction member insertion recess 20 and is attached and fixed using an adhesive or the like. The friction member insertion recess 20 is provided in the central portion of the lower surface of the lower strut 12, has a depth smaller than the thickness of the friction member 9, and has an upper bottom thereof as flat as the flatness of the friction member 9. A strut height adjusting male screw portion 13 is formed on the upper portion of the lower strut 12, and a lower strut notch portion 22 is formed on the outer peripheral surface of the lower portion of the lower strut 12 by cutting two opposing surfaces in the cross-sectional direction. Are formed.

A rod-shaped upper connecting member 15 for connecting to the support base is formed on the upper part of the upper column 11, and a connecting male screw part 16 is formed in the upper region of the upper connecting member 15. Further, at the lower part of the upper support 11, a support height adjusting female screw portion 19 corresponding to the support height adjusting male screw portion 13 of the upper support 11 is formed at the center of the lower surface,
Further, on the outer peripheral surface of the lower portion thereof, upper strut cutout portions 23 are formed by cutting out two opposing surfaces in the cross-sectional direction.

An elastic pad 14 having a through hole 50 (see FIG. 4) through which the upper connecting member 15 penetrates is provided on the upper surface of the lower portion of the upper column 11. The outer diameter of the elastic pad 14 is at least equal to or larger than the lower outer diameter of the upper strut 11, and the contact friction coefficient between the upper surface of the lower portion of the upper strut 11 that contacts with the lower surface and the support base 2 that contacts with the upper surface is It has a material larger than the coefficient of contact friction between the friction member 9 and the sliding plate 10. For such an elastic pad 14, a rubber material having a sufficiently flat surface, relatively smooth surface, and relatively small hardness is used. For example, as natural rubber and chemically synthesized rubber,
Rubber materials such as chloroprene rubber, urethane rubber, and silicone rubber are suitable.

With such a structure, a wrench or a dedicated jig (not shown) is inserted into each of the notches 22 and 23 of the upper strut 11 and the lower strut 12 and the prop height is adjusted by screwing them together. Changing the insertion depth of the male thread portion 13 for the support to the female thread portion 19 for adjusting the column height,
The gap between the upper column 11 and the lower column 12 is adjusted,
Ultimately, the column height can be changed.

Since the friction coefficient between the sliding plate 10 and the friction member 9 in each seismic isolation device 7 is the same, if the supporting load is the same, the frictional force generated at this contact portion will be the same, and this frictional force will be the same. Corresponding rotational forces are also equal. Therefore, when the upper strut 11 and the lower strut 12 are screwed, if the rotational force, that is, the torque acting on the spanner or the special jig is the same, the supporting loads of the seismic isolation devices 7 can be equalized. The torque can be easily adjusted by using a torque meter or a wrench equipped with a device capable of detecting the torque, a spanner, or a dedicated torque jig. By using such a wrench, spanner, or dedicated torque jig to adjust the torque of each seismic isolation device 7 supporting the load of the load to be approximately equal, the supporting load acting on each seismic isolation device 7 can be adjusted. Can be almost the same.

All seismic isolation devices 7 arranged in this way
Since it is possible to greatly reduce the variation in the supporting load of the seismic isolation device 7, finally, the supporting load exceeding the design strength does not act on some of the seismic isolation devices 7, and the seismic isolation device 7 is not damaged or destroyed. As the fear disappears, the deviation (eccentricity) between the center of gravity of the entire structural system and the center of the seismic isolation force is suppressed to a very small level, and during a large earthquake, the rotational behavior of the entire structural system disappears in the horizontal plane. There is no fear of abnormal behavior, the seismic isolation function of the seismic isolation device 7 effectively acts, and it becomes possible to effectively protect the large-scale substation equipment loaded with the seismic isolation target from an earthquake.

Further, by forming the post height adjusting male screw portion 13 on the lower strut 12 upward, when the seismic isolation device is used outdoors, even if rain or water is splashed, the water in the screw will be lost. Can be prevented from entering or water can be less likely to be accumulated in the strut height adjusting female screw portion 19, so that the screw portion can be less likely to be corroded.

Further, the friction member 9 in contact with the sliding plate 10
Is fitted into the friction member insertion recess 20 and the upper surface is adhered with an adhesive, so even if the adhesive deteriorates and peels off, the friction member 9 slides the friction member 9 due to a large earthquake or the like. Even if the friction member 9 slides up and a horizontal peeling force is generated by the frictional force, the outer peripheral surface of the portion of the friction member 9 which is buried in the friction member insertion recess 20 is caught in the friction member insertion recess 20. Friction member insertion recess 2
It never goes off. Therefore, with such a structure, the friction member 9 is reliably fixed to the lower surface of the seismic isolation device 7, and finally, the friction function, that is, the seismic isolation function can be exhibited.

Further, the elastic pad 14 installed between the upper surface of the lower part of the upper support 11 and the support frame 2 is made of a material whose contact friction coefficient of each member is larger than that of the friction member 9 and the sliding plate 10. Is used. Therefore, when the friction member 9 slides on the sliding plate 10 due to a large earthquake and the generated frictional force is transmitted to the elastic pad 14 via the lower strut 12 and the upper strut 11, a load equal to that of the friction material 9 is supported. Since the contact frictional force between the elastic pad 14 and the upper surface of the lower part of the upper column 11 and the support pedestal 2 is larger than the transmitted frictional force, the members in contact with the elastic pad 14 slide. Without being fixed, the frictional force transmitted to the upper support 11 can be transmitted to the support base 2 in a fixed state.

When a horizontal slip easily occurs at the contact portion with the elastic pad 14, the upper strut through-hole 21 of the supporting base and the upper connecting pillar 15 collide with each other violently. There is a danger that the support 15 and the seismic isolation device 7 may be disassembled. The configuration of this embodiment can solve the above problems. That is, since the elastic pad 14 has elasticity also in the horizontal direction, it is possible to prevent a collision between the upper strut through hole 21 of the support base and the upper coupling post 15 with a comparatively small seismic force. In an extremely large earthquake, the impact force due to the elasticity of the elastic pad 14 in the horizontal direction can be mitigated, so that the upper connecting column 15 can be finally prevented from being damaged.

The elastic pad 14 is a soft elastic body having a relatively small hardness, and is appropriately compressed and deformed in the vertical direction by the supporting load acting on the elastic pad 14, so that the supporting frame 2 and the upper column 11 are supported. Even if there is a slight distortion of the contact portion on the upper surface of the lower part or a deviation of the flatness, the supporting base 2 and the upper support column 11 should be intimately adhered to each other and the supporting load should be almost evenly distributed on the mutual contact surfaces. You can

Therefore, it is possible to reduce the possibility that the support will be damaged due to rattling at the time of supporting or deviation of the load, and finally, the friction member 9 and the sliding plate 10 on the lower surface of the lower support are brought into close contact with each other. Therefore, the surface pressure due to the supporting load acting on them can be made substantially uniform. Since the target frictional force of the friction member 9 can be accurately generated, the reliability of the seismic isolation function can be significantly improved.

[Second Embodiment] In this embodiment,
Although it is basically the same as the first embodiment, as shown in FIGS.
The difference is that it is formed in the lower part of 1.

The friction member 9 in contact with the sliding plate 10 is fitted into the friction member insertion recess 20 provided in the central portion of the lower surface of the lower support column 12, and is fixed and fixed by using an adhesive or the like. The friction member insertion recess 20 has a depth smaller than the thickness of the friction member 9, and an upper bottom thereof is as flat as the flatness of the friction member 9.

On the upper part of the lower column 12, a column height adjusting female screw portion 19a is formed, and on the outer peripheral surface thereof, a lower column notch 22 is formed by notching two opposing faces in the cross-sectional direction. Has been formed.

A rod-shaped upper connecting member 15 for connecting to the support frame is formed on the upper portion of the upper support column 11, and a connecting male screw portion 16 is formed in the upper region of the upper connecting member 15. Further, at the lower part of the upper strut 11, a strut height adjusting male screw portion 13a corresponding to the strut height adjusting female screw portion 19a of the upper strut 11 is formed in the center of the lower surface, and a cross section is formed on the outer peripheral surface of the lower portion thereof. Upper strut notch portion 23 in which two surfaces facing each other in the direction are notched
Are formed.

On the upper surface of the lower part of the upper column 11, an elastic pad 14 having a through hole at the center through which the upper connecting member 15 penetrates.
Is installed. The elastic pad 14 has an outer diameter that is at least equal to or larger than the lower outer diameter of the upper strut 11, and has a friction coefficient of contact with the upper surface of the lower portion of the upper strut 11 that is in contact with the lower surface and the support frame 2 that is in contact with the upper surface. Member 9 and sliding plate 10
It has a material larger than the coefficient of contact friction with.

With this structure, the same effect can be obtained with respect to the seismic isolation function as that of the first embodiment. That is, first, a spanner or a dedicated jig is inserted into each of the notches 22 and 23 of the upper strut 11 and the lower strut 12, and these are screwed together to adjust the strut height of the strut height adjusting male screw portion 13a. Female screw portion 19a for
The upper support 11 and the lower support 12 with different insertion depths
The gap distance between and is adjusted, and the column height can be finally changed.

Further, by forming the strut height adjusting male screw portion 13a downward on the lower surface of the upper strut 11 and forming the strut height adjusting female screw portion 19a on the lower strut 12 above,
When assembling the support cradle and the seismic isolation device from the bottom to the lower stanchion 12 in the upper stanchion 11 that has been assembled into the support cradle 2 first, a hole for the female height portion 19a for adjusting the stanchion height on the upper surface of the lower stanchion 12 Since the installer can see it from the upper side relatively easily, the column height adjusting female screw portion 19
It is possible to easily incorporate a into the male height portion 13a for adjusting the column height. The seismic isolation device 7 having such a configuration is suitable for indoor use.

[Third Embodiment] Next, a third embodiment will be described with reference to FIGS. 9 and 1
As shown in 0, in the present embodiment, first, the seismic isolation device main body 7 that supports the support base 2 is installed on the foundation 3 that is embedded and installed in the ground 6. The seismic isolation device main body 7 corresponds to the seismic isolation device 7 in the first and second embodiments. That is, similarly to the first and second embodiments, a plurality of sliding plates 10 each having a flat upper surface that is horizontal and flat are arranged and fixed, and the substation main body 1 is mounted on the sliding plates 10.
The support base 2 on which is installed is supported by a plurality of columns 8 having friction members 9 attached to the surface in contact with the sliding plate 11.

Further, in the present embodiment, the damping device 24
Are added and installed. On the outer periphery of the installation support base 2,
A plurality of horizontal restraint members 26 having through holes 28 are arranged in the horizontal plane. Corresponding to each horizontal restraint member 26, an elasto-plastic member 25 is vertically fixed and installed on an elasto-plastic member foundation 27 which is embedded and installed in the ground 6 around the foundation 3 or around the foundation 3. 25 passes through the central region of the corresponding through hole of the horizontal restraining member 26.
Here, the inner diameter of the through hole 28 is manufactured so as to have an appropriate gap with the horizontal restraining member 26 with respect to the diameter of the elastic-plastic member 25.

The structure of the seismic isolation device main body 7 having the seismic isolation function is the same as that of the seismic isolation device 7 of the first or second embodiment. With this seismic isolation device main body 7, the best seismic isolation effect can be obtained against an expected earthquake at the place where the substation equipment is installed, so the substation equipment can be protected from such an earthquake.

The damping device 24 comprises an elasto-plastic member 25 and a horizontal restraining member 26. The elasto-plastic member 25 is formed in the shape of a cylindrical rod, and the lower portion thereof is in the foundation 3 or the foundation 3
It is fixed and installed on the elasto-plastic member foundation 27 embedded in the ground 6 around the. The length of the elasto-plastic member 25 is formed sufficiently longer than the length from the surface of the elasto-plastic member base 27 to the through hole 28 on the horizontal restraining member 26. The inner diameter of the through hole is formed so that the gap formed between the elasto-plastic member 25 and the through hole 28 is smaller than the designed maximum slip displacement of the seismic isolation device body 7.

The length and thickness of the portion of the elasto-plastic member 25 from the elasto-plastic member base 27 surface to the through hole 28 on the horizontal restraining member 26 are set and formed in the following way. A critical earthquake larger than the expected earthquake occurs, a large sliding displacement occurs in the seismic isolation device main body 7, the initially set gap is narrowed, and the horizontal restraining member 26 contacts the elasto-plastic member 25. When the deformation occurs, the length and thickness of the elasto-plastic member 25 are adjusted so as to generate the amount of damping due to the elasto-plastic deformation that absorbs the vibration energy so as not to exceed the designed maximum sliding displacement of the seismic isolation device main body 7. You can decide.

As for the seismic force in a marginal earthquake, it is sufficient to consider about 1.5 to 2 times the seismic force of an assumed earthquake. Further, as the material of the elasto-plastic member 25, a material such as a mild steel material, a stainless steel material, a copper material having a high ductility and a high breaking strength is suitable.

With such a structure, first, the friction member 9 and the sliding plate 10 in the seismic isolation device main body 7 are applied to the horizontal load acting on the substation equipment main body 1 due to a storm or a small-to-medium earthquake, which is usually less than the frictional force. Acts as a locking device without sliding. As the next step, if a horizontal seismic load exceeding a predetermined frictional force acts on the substation due to a relatively large earthquake,
It has a seismic isolation function that smoothly slides and does not transmit seismic force greater than frictional force, and damage from a large earthquake can be prevented. If the sliding displacement generated at this time is equal to or smaller than the gap δ between the elasto-plastic member 25 and the horizontal restraining member 26, the seismic isolation function of only the frictional action of the seismic isolation device body 7 works.

As a next step, when an earthquake larger than the one assumed in the design occurs, only the frictional action of the seismic isolation device main body 7 causes the slip displacement generated within the range of the designed maximum slip displacement. Since the amount cannot be suppressed, the seismic isolation device main body 7 may pass over the sliding plate 10, and not only the seismic isolation device main body 7 but also the substation device main body and other devices may be seriously damaged. The damping device 24 functions as a backup device to cope with such a situation.

That is, when an earthquake larger than the designed earthquake occurs, and the designed maximum slip displacement exceeds the designed maximum slip displacement only by the frictional action of the seismic isolation device main body 7, here, the elasto-plastic member 25 and the horizontal restraining member 26 are used. Since the gap between the seismic isolation device main body 7 and the seismic isolation device main body 7 exceeds the designed maximum slip displacement, the horizontal constraining member 26 installed on the support base 2 is set to the elastic-plastic member 25. And the elasto-plastic member 25 is bent. When this is bent, a restoring force proportional to the bending is generated, this force is transmitted from the horizontal restraining member 26 to the support base 2, acts as a pushing-back force on the support base 2, and the sliding displacement is suppressed.

Furthermore, when the slip displacement increases due to a large seismic force and the bending deformation of the elasto-plastic member 25 begins to be plastically deformed beyond the elastic region, energy dissipation (hysteretic damping) due to plastic deformation occurs in the elasto-plastic member 25. (Energy dissipation) is performed, the vibration energy of the entire target substation device is attenuated, and the vibration amplitude, that is, the sliding displacement can be significantly suppressed. In the end, even if a large earthquake that is more destructive than expected occurs, the sliding displacement of the seismic isolation device body 7
It is possible to suppress the design maximum slip displacement within the assumed earthquake and protect the substation device body 1 and the seismic isolation device body 7 from damage or destruction.

11 and 12 show the damping device 24 in an enlarged scale. In addition, in FIG. 11, only the center line of the seismic isolation device main body 7 is shown. The damping device 24 includes an elasto-plastic member 25 and a horizontal restraining member 26.
The elasto-plastic member 25 is formed in a cylindrical rod shape, and is divided into an upper elasto-plastic member upper portion 27 and a lower elasto-plastic member lower portion 30,
An elasto-plastic member external thread portion 31 is formed on the elasto-plastic member lower portion 30, and the relationship between the outer diameter D _U of the elasto-plastic member upper portion 27 and the outer diameter D _L of the elasto-plastic member lower portion 30 is _DL > It is formed like D _U.

A fixing member 32 is embedded in the elasto-plastic member foundation 27 embedded in the ground 3 or in the ground 6 around the foundation 3, and the elasto-plastic member external thread portion 31 is perpendicular to the center thereof.
The fixing member female screw portion 33 corresponding to is formed. In the elasto-plastic member 25, the elasto-plastic member lower portion 30 is replaced with the fixing member 32.
Is fixed by being screwed onto the upper surface of the fixing member 32 with a fixing nut 34 to reinforce the fixed state.

The horizontal restraint member 26 is installed on the side surface of the support base 2, and the plate portion that projects in the horizontal direction has a through hole 28 in which a buffer member 35 is attached to the inner peripheral surface. Gap 36 formed between the elastic-plastic member 25 extending through the central portion of the through hole 28 and the through hole 28, the gap 36 [delta], the through hole inner diameter when the _{D H, δ = (D H} -D U ) /
There are two relationships. In this way, the gap is
The inner diameter D _H of the through-hole 28 is formed so as to be smaller than the designed maximum slip displacement in.

Regarding the length and thickness of the elasto-plastic member upper portion 29, the length L _T from the surface of the elasto-plastic member base 27 to the through hole 28 on the horizontal restraining member 26, the substantially deformed portion L of the elasto-plastic member L _{The P} and the thickness D _U are set and formed according to the concept described above.

The total length L _T of the elasto-plastic member upper part 29 is
Even if the elasto-plastic member 25 receives a deforming force from the horizontal restraining member 26 and is largely deformed in the horizontal direction, the tip of the elastic-plastic member 25 has a through hole 28.
I have plenty of room so that I can stay in place. The height position of the through hole 28 of the horizontal restraining member 26 is set to the elasto-plastic member 2
5 is formed, adjusted and installed in accordance with the substantially deforming length L _P of 5. The thickness D _U is determined according to the amount of energy dissipation of the upper portion 29 of the elasto-plastic member at the time of the assumed maximum seismic force. Further, as the material of the elasto-plastic member 25, a material such as a mild steel material, a stainless steel material, a copper material having a high ductility and a high breaking strength is suitable.

With such a structure, first, the elasto-plastic member male screw portion 31 is screwed into the fixing member female screw portion 33 and fixed to the fixing member 32, and at the same time, the fixing member female screw portion 3 is formed.
The third threaded adjustment, since the overall length L _T of the elastic-plastic member upper 29 which functions as a damping device can be set appropriately, it is possible to function as an elasto-plastic damper comprising a damping ability as designed Like Further, by tightening the fixing member female screw portion 33 appearing on the upper surface of the fixing member 32 to the fixing member 32 with the fixing nut 34, not only the fixed state is reliably reinforced with respect to the fixing member 32, but also a large earthquake occurs. Even when the elasto-plastic member 25 is largely deformed at some time, the fixing member female screw portion 3
It is possible to prevent cracks and damages from 3.

Furthermore, in the event of a large earthquake that exceeds expectations,
When the sliding displacement of the seismic isolation device main body 7 exceeds the gap δ, the elasto-plastic member 25 and the horizontal restraint member 26 come into collision with each other, and if a sudden collision occurs, the mutual members may be damaged by the impact load. Through hole 28 of horizontal restraint member 26
By attaching the cushioning member 35 to the inner peripheral surface, it is possible to absorb the impact of the mutual members and prevent the respective members from being damaged.

[Fourth Embodiment] Fourth Embodiment
In the third embodiment, as shown in FIGS.
It is an example in which the configuration of the damping device 24 is expanded. This practice
The damping device 24 in the form of FIG.
It is composed of a material 26a. The elasto-plastic member 25 is a cylinder
The rod-shaped elastic member has an upper part 27 and a lower part.
It is divided into the plastic member lower part 30 and
Has an elasto-plastic member external thread portion 31 and
Outer diameter D of member upper part 27_UAnd the outer diameter D of the elastic-plastic member lower part 30
_LRelationship with D _L> D_UIs formed.

The fixing member 32 is attached to the elasto-plastic member foundation 27 embedded in the ground 3 or in the ground 6 around the foundation 3.
Is embedded, and the elasto-plastic member male thread 3
The fixing member female screw portion 33 corresponding to No. 1 is formed.
In the elasto-plastic member 25, the elasto-plastic member lower portion 30 is the fixing member 3
2 is screwed and fixed, and further fixed by a fixing nut 34 on the upper surface of the fixing member 32 to reinforce the fixed state.

The horizontal restraint member 26a is composed of a support frame fixing member 37, a horizontal fixing member 38, and a horizontal restraint gap adjusting member 39. The support base fixing member 37 is the support base 2
Is installed vertically on the side surface of the support pedestal fixing member 37, and screw holes 52 (only the center line is shown in FIGS. 13 and 15) for fixing the horizontal fixing member 38 by bolts are vertically provided on the side surface of the support pedestal fixing member 37. Many are provided in. Horizontal fixing member 38
Is composed of a vertical plate and a horizontal plate for connecting to the support frame fixing member 37, and is bolted to the support frame fixing member 37 on the vertical plate. Due to the screw holes 52 provided in the support frame fixing member 37 in a stepwise manner in the vertical direction,
The installation height of the horizontal fixing member 38 can be adjusted stepwise.

Further, the horizontal plate member 56 has a horizontal fixing member hole 4
0 is formed. The horizontal restraint gap adjusting member 39 is fixed and installed on the horizontal fixing member 38. The horizontal restraint gap adjusting member 39 has a through hole 28a in which a cushioning member 35 is attached on its inner peripheral surface. The gap 36 formed between the through hole 28a and the elasto-plastic member 25 penetrating the central portion of the through hole 28a has a gap 36 of δ and a through hole inner diameter of _{DH.
When, δ = (D H -D U} ) / 2 of the relationship. The inner diameter _DH of the through hole 28a is formed so that the gap is smaller than the designed maximum slip displacement in the seismic isolation device body 7. The inner diameter of the horizontal fixing member hole 40 of the horizontal fixing member 38 is formed to be larger than the inner diameter _DH of the through hole 28a.

Regarding the length and thickness of the elasto-plastic member upper portion 29, the length L _P from the boundary between the elasto-plastic member upper portion 29 and the elasto-plastic member lower portion 30 to the through hole 28a of the horizontal restraint gap adjusting member 39 is The thickness D _U is set and formed according to the same idea as in the third embodiment. Even if the elasto-plastic member 25 receives a deformation force from the horizontal restraint gap adjusting member 39 and is largely deformed in the horizontal direction, the entire length L _T of the elasto-plastic member upper portion 29 does not come off the through hole 28a. So, it is formed with a sufficient margin.

Through hole 28a of horizontal restraint gap adjusting member 39
Inner diameter D _{H of} the elasto-plastic member 25 and the length L of the elasto-plastic member 25 substantially deformed
_{The P} and the thickness D _U are designed and manufactured so as to obtain the required attenuation corresponding to the assumed critical earthquake. The inner diameter D _H of the through hole 28 a of the horizontal restraint gap adjusting member 39 is manufactured so that the necessary distance δ of the gap 36 is set to the thickness D _U of the elasto-plastic member 25. The length _{L P} of the elastic-plastic member 25, the horizontal restraining member 26
By adjusting the height position in the through hole 28a of the horizontal restraint gap adjusting member 39 of a and the elasto-plastic member external thread portion 31 of the elasto-plastic member 25, it can be set with high accuracy.

The thickness D _U can be produced by changing the diameter of the elasto-plastic member upper portion 29 as required. The inner diameter D _H of the through hole 28a of the horizontal restraining gap adjusting member _39, the length L _P and the thickness D _U elastoplastic member _25, the combination of the height position of the horizontal restraining member 26a, must respond to limit seismic envisaged The amount of attenuation can be set easily and accurately.

With such a structure, the effect as the damping device can be obtained as in the third embodiment, and the inner diameter D _H of the through hole 28a of the horizontal restraint gap adjusting member 39 and the elastic-plastic member 25 can be obtained. Since the combination tolerance of the length L _P , the thickness D _U , and the height position of the horizontal restraining member 26a becomes extremely high, it is possible not only to easily and accurately set the necessary attenuation amount corresponding to the assumed critical earthquake. Instead, when the assumed seismic force is changed or the seismic isolation performance standard is changed after manufacturing or installation, the damping function of the damping device 24 can be easily changed within the range of manufacturing and installation. . It is possible to flexibly adjust and change the seismic isolation performance for any earthquake.

Furthermore, when it is desired to significantly change the capacity of the damping device 24, or when replacement is performed to avoid performance deterioration due to corrosion of the elasto-plastic member 25, etc. due to long-term installation,
When the damping device is activated during a large earthquake and the elasto-plastic member 25 is repeatedly subjected to large deformation up to the plastic region and it is desired to replace it with a new elasto-plastic member 25, the elasto-plastic member 25 is screwed to the fixing member 32. I'm just doing
The newly manufactured elasto-plastic member 25 can be easily replaced. In this way, it is possible to replace the elastic-plastic member 25 very easily in order to maintain the damping performance by changing the capacity of the seismic isolation device as a whole, replacing it for maintenance, or replacing it after a large earthquake. Therefore, it can be said that the present seismic isolation device is not only a device having high seismic isolation performance, but also a seismic isolation device that is highly flexible and expandable.

[0106]

As described above, according to the present invention,
Since it is possible to evenly share the supporting load that acts on the installed multiple seismic isolation devices against a major earthquake
The position of the center of gravity of the equipment and the pedestal and the center of the seismic isolation acting force generated by the sliding frictional force of the seismic isolation device can be made to substantially coincide with each other. Due to this effect, the seismically isolated device can protect the device from damage or destruction due to the large earthquake without exhibiting abnormal behavior during the large earthquake.

[Brief description of drawings]

FIG. 1 is an overall elevational view when a first embodiment of a seismic isolation device according to the present invention is applied to a substation device.

FIG. 2 is an enlarged elevational view near the seismic isolation device of FIG.

FIG. 3 is an enlarged vertical cross-sectional view around the seismic isolation device of FIG.

FIG. 4 is an exploded elevation view of the seismic isolation device of FIGS. 2 and 3.

5 (a) is a horizontal sectional view taken along the line AA of FIG.
4B is a horizontal sectional view taken along the line BB of FIG.

FIG. 6 is a vertical cross-sectional view corresponding to FIG. 3 in the vicinity of the seismic isolation device when the second embodiment of the seismic isolation device according to the present invention is applied to a substation device.

7 is an exploded elevation view of the seismic isolation device of FIG.

8 (a) is a horizontal sectional view taken along the line AA of FIG.
7B is a horizontal sectional view taken along the line BB of FIG.

FIG. 9 is an overall elevational view corresponding to FIG. 1 when a third embodiment of the seismic isolation device according to the present invention is applied to a substation device.

FIG. 10 is an overall plan view of the transformer device of FIG.

FIG. 11 is an enlarged vertical cross-sectional view near the damping device of the seismic isolation device of FIG. 9.

FIG. 12 is an enlarged plan view around the damping device of the seismic isolation device of FIG. 9.

FIG. 13 is a vertical cross-sectional view corresponding to FIG. 11 in the vicinity of the damping device of the seismic isolation device when the fourth embodiment of the seismic isolation device according to the present invention is applied to a substation device.

14 is a plan view around the damping device of the seismic isolation device of FIG.

FIG. 15 is a developed vertical sectional view of the damping device of the base isolation device of FIG.

FIG. 16 is an overall elevational view showing a seismic resistant structure of a conventional substation device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Substation device main body, 2 ... Support stand, 3 ... Foundation, 4 ... Bushing, 5 ... Power line, 6 ... Ground, 7 ... Seismic isolation device (seismic isolation device main body), 8 ... Struts, 9 ... Friction member, 10 ... Sliding plate, 1
DESCRIPTION OF SYMBOLS 1 ... Upper strut, 12 ... Lower strut, 13, 13a ... Strut height adjusting male screw part, 14 ... Elastic pad, 15 ... Upper connecting column, 16 ... Connecting column male screw part, 17 ... Fall prevention nut member, 18 ... Washer member , 19 and 19a ... Main pillar height adjusting female screw portion, 20 ... Friction member insertion recess, 21 ... Upper strut through hole, 22 ... Lower strut notch, 23 ... Upper strut notch, 24 ... Damping device, 25 ... Elasto-plastic member, 26 ... Horizontal restraining member, 27 ... Elasto-plastic member foundation, 28 ... Through hole, 29
... elasto-plastic member upper part, 30 ... elasto-plastic member lower part, 31 ... elasto-plastic member male screw part, 32 ... fixing member, 33 ... fixing member female screw part, 34 ... fixing nut, 35 ... buffer member, 36 ... gap, 37 ... support Frame fixing member, 38 ... Horizontal fixing member, 3
9 ... Horizontal restraint gap adjusting member, 40 ... Horizontal fixing member hole, 4
DESCRIPTION OF SYMBOLS 1 ... Small-diameter elasto-plastic member, 42 ... Large-diameter elasto-plastic member, 43 ... Embedded metal fitting, 44 ... Connecting plate, 50 ... Through hole, 52 ... Screw hole.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yasuhiko Aida             2-1, Ukishima-cho, Kawasaki-ku, Kawasaki-shi, Kanagawa             Ceremony Company Toshiba Hamakawasaki Factory (72) Inventor Hiroshi Katayama             2-1, Ukishima-cho, Kawasaki-ku, Kawasaki-shi, Kanagawa             Ceremony Company Toshiba Hamakawasaki Factory F term (reference) 3J048 AA03 AA07 AC01 AC06 BC09                       BD01 BD03 BE12 DA01 DA03                       EA38

Claims (26)

[Claims] 1. A seismic isolation device comprising a plurality of mounts attached to a gantry, which slidably contacts a substantially horizontal and flat upward sliding surface in a horizontal direction to transfer the gravitational load of the gantry to the sliding surface. Therefore, when installing the seismic isolation device, an upper member arranged at a fixed position with respect to the gantry, and a lower member capable of adjusting the relative position in the vertical direction of the upper member and being in contact with the sliding surface, A seismic isolation device characterized by having. 2. The seismic isolation device according to claim 1, wherein the vertical relative position is adjusted by a screw mechanism. 3. The seismic isolation device according to claim 2, wherein the upper member and the lower member have notches for twisting them relative to each other. 4. The seismic isolation device according to claim 2, wherein a female screw is formed on the upper member, and a male screw that is screwed with the female screw is formed on the lower member. 5. The seismic isolation device according to claim 2, wherein the upper member is formed with a male screw, and the lower member is formed with a female screw that is screwed with the male screw. 6. A recess is formed in the lower surface of the lower member, and a friction member is attached in the recess so as to project downward from the lower surface of the lower member and contact the sliding surface. The seismic isolation device according to claim 1. 7. The pedestal has a substantially horizontal and flat downward facing pad facing surface, and is sandwiched between the pad facing surface and the upper member to elastically transfer a gravitational load of the gantry to the upper member. A pad having a friction coefficient at a contact portion between the elastic pad and the pad facing surface and the upper member is larger than a friction coefficient at a contact portion between the sliding surface and the lower member. The seismic isolation device described in 1. 8. The seismic isolation device according to claim 1, further comprising a damping device that suppresses relative movement in the horizontal direction between the gantry and the sliding surface. 9. The damping device includes a horizontal restraining member that is attached to the gantry and has a through hole that penetrates in a vertical direction, and a horizontal restraining member that is fixed relative to the sliding surface and extends in the vertical direction. 9. The seismic isolation device according to claim 8, further comprising an elastic elasto-plastic member that penetrates through. 10. The seismic isolation device according to claim 9, wherein the elasto-plastic member penetrates the through hole with a gap. 11. The seismic isolation device according to claim 10, wherein the gap is smaller than a designed maximum horizontal relative displacement at a position where the elasto-plastic member penetrates the through hole. 12. A horizontal fixing member hole which is larger than the through hole is provided in the horizontal restraining member, and a horizontal restraining gap adjusting member is attached so as to cover a part of the horizontal fixing member hole. The seismic isolation device according to claim 9, wherein the through hole is provided in the member. 13. The sliding surface is provided on one base, to which a fixing member is fixed,
10. The fixing member is formed with a female screw that opens upward, and the lower end of the fixing member is formed with a male screw that is screwed into the female screw of the fixing member. Seismic isolation device. 14. A seismic isolation device for a substation equipment, which is installed between a foundation floor and a support frame on which the substation equipment is installed, for reducing seismic motion transmitted from the foundation floor surface. A sliding surface formed in a part, a plurality of slidable sliding members arranged on the sliding surface, a plurality of columns with these sliding members attached to the bottom surface and height adjustment in the vertical direction, and these columns Seismic isolation device for substation equipment, which comprises a support base whose upper part is constrained at least in the horizontal direction. 15. The pillar comprises a lower pillar having a sliding member attached to a lower surface thereof, and a support base and an upper pillar constrained at least in a horizontal direction on an upper surface thereof, and the lower pillar and the upper pillar are screw-connected in a vertical direction. 15. The seismic isolation device for substation equipment according to claim 14, wherein the seismic isolation device for substation is provided with a function of supporting a load on the support pillar and adjusting a vertical gap between the lower support pillar and the upper support pillar by screw connection. . 16. The lower support column has a structure in which at least an upper part thereof is formed by a male screw, a structure in which a lower peripheral surface of the lower support column is cut out at at least two positions facing each other in a sectional direction, and a lower surface of the lower part. Hole structure having a depth larger than the cross-sectional outer dimensions of the sliding member arranged in a part of the sliding member and smaller than the thickness of the sliding member and having a flat upper bottom, and the sliding member inserted / fixed in this hole structure The seismic isolation device for a substation device according to claim 14, wherein the seismic isolation device includes: 17. A structure in which a female screw corresponding to the male screw structure of the upper part of the lower strut according to claim 16 is formed on a part of a lower surface of the lower part of the upper strut, and a lower outer peripheral surface of the upper strut is formed. It is composed of a structure in which surfaces facing each other in the cross-sectional direction are cut out at least at two or more places, and a rod-like structure in which a part of the upper surface of the upper part is fixed / installed upward and at least its upper part is formed by a male screw. The seismic isolation device for substation equipment according to claim 14, characterized in that. 18. The lower pillar has a structure in which a female screw is formed in a part of an upper surface of an upper portion of the lower pillar toward the inner side in a downward direction, and at least two surfaces of the upper outer peripheral surface facing each other in a cross-sectional direction are formed.
A structure with notches or more cut out, a hole structure having a depth larger than the cross-sectional outer dimension of the sliding member arranged on a part of the lower surface thereof and smaller than the thickness of the sliding member, and a flat lower bottom, and this hole The seismic isolation device for a substation device according to claim 14, wherein the seismic isolation device is configured by the sliding member inserted and fixed in a structure. 19. A structure in which at least a lower portion of the upper strut is formed by a male screw corresponding to a female screw structure formed in a part of an upper surface of the lower strut according to claim 18, and an upper outer peripheral surface of the upper strut in a cross sectional direction. At least 2 opposite sides
15. The bar-shaped structure, which is notched at more than one point, and which is fixed and installed in a part of the upper surface of the upper part in the upward direction and at least the upper part of which is formed by a male screw, is formed. Seismic isolation device for substation equipment. 20. In the upper strut, a rod-like member fixed and installed upward on a part of an upper surface of the upper strut is provided below the support cradle and at least a part of a support plate below the support cradle. The through hole provided for penetrating the rod-shaped member has a hole for partially penetrating the rod-shaped member, and is a support member having flexibility in the vertical direction, and the contact friction coefficient with respect to the upper surface of the upper column and the lower surface of the support frame is small. Having a material having a coefficient of friction larger than the friction coefficient between the sliding surface and the sliding member, and by allowing the material to penetrate through an elastic pad that also functions as a horizontal force transmitting member between the upper strut and the support frame,
In the male screw part on the upper part of the rod-shaped structure on the upper surface of the penetrating upper pillar,
The nut member having a female screw corresponding to the male screw is screwed in and installed on the support base.
Substation seismic isolation device described in 4. 21. A seismic isolation device for a substation equipment, which is installed between a foundation floor and a support stand on which substation equipment is installed, for reducing seismic motion transmitted from the foundation floor, at least on the foundation floor. A sliding surface formed in a part, a plurality of slidable sliding members arranged on the sliding surface, a plurality of columns with these sliding members attached to the bottom surface and height adjustment in the vertical direction, and these columns 2. A seismic isolation device for substation equipment, comprising: a support frame whose upper part is constrained at least in the horizontal direction; and a plurality of damping devices arranged on the support frame and acting in the in-plane direction. 22. The damping device includes a plurality of horizontal constraining members arranged on a support pedestal and having through-holes in a vertical direction in a horizontal plane, and a lower portion of each horizontal constraining member is embedded in a foundation floor surface. An elastic-plastic member that is installed and fixed in a fixed embedded member, the upper portion of which penetrates the through hole of the horizontal restraining member, and at least the through hole inner peripheral surface and the outer peripheral surface thereof have a sufficient gap at the through hole position. 22. The seismic isolation device for a substation device according to claim 21, characterized in that 23. The horizontal restraining member is fixed and fixed to the support frame, and is horizontally overhanged on the fixing member. The horizontal restraining member has a maximum outer diameter of the elasto-plastic member in a part of a horizontal plane thereof. 22. A horizontal fixing member provided with a through hole such that a gap between the through hole and the minimum inner diameter of the through hole is smaller than a designed maximum sliding displacement in the seismic isolation device. Seismic isolation device for substation equipment. 24. The horizontal constraining member is fixedly installed on the support frame, and horizontally installed on the stationary member so that its installation height can be arbitrarily set on the stationary member. , Horizontally fixing a through hole such that a gap between the maximum outer diameter of the elasto-plastic member and the minimum inner diameter of the through hole is smaller than a designed maximum slip displacement in the seismic isolation device in a part of the horizontal plane. A member and a through hole that is installed on the upper surface or the lower surface of the horizontal fixing member and has a minimum inner diameter smaller than the minimum inner diameter of the through hole of the horizontal fixing member, and its horizontal installation position can be arbitrarily adjusted on the horizontal fixing member. The seismic isolation device for a substation device according to claim 21, wherein the seismic isolation device includes a horizontal fixing auxiliary member. 25. The elasto-plastic member has a structure formed by a cylindrical rod of a metal member, a lower portion formed by a male screw having an outer diameter equal to or larger than an outer diameter of the upper portion, and an upper portion which is not a male screw structure is formed by the upper portion. A structure formed to have a length exceeding the height of the position of the through hole of the horizontal fixing member of the horizontal restraining member, and at least two positions where the outer peripheral surfaces of the horizontal restraining members face each other in the cross-sectional direction at at least one arbitrary position on the upper portion. 22. The seismic isolation device for a substation device according to claim 21, wherein the seismic isolation device is configured by a notch. 26. A structure in which the fixing embedding member is formed so as to be fixed and embedded in the base floor so that the height position of the upper surface thereof is at least the base floor surface or more, and one of the upper surfaces thereof. And a structure in which a female thread corresponding to a male thread on the lower part of the elasto-plastic member is formed in the lower portion and the thread length of which is longer than the length of the male thread portion of the elasto-plastic member. Item 21. A seismic isolation device for substation equipment.