JP2003130129A - Earthquake-absorbing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a quake-absorbing device which exhibits satisfactory quake- absorbing performance by means of securing the rolling distance of a roller which rolls on a rail and having no limitation of an outside dimension of the quake-absorbing device due to rail length. SOLUTION: First rails 3, comprising a set composed of two rails that extends linearly in a transverse direction and is curved in the vertical direction are arranged on the upper surface of a lower frame 2 in parallel, so that a partially overlapped portion is formed. A first roller 5, comprising a set composed of two rollers, is arranged on a lower surface of an upper frame 1 and a second roller 6 comprising a set composed of two rollers that are different mutually in the protruding length and roll on the first rails 3 is arranged on a frame 10 for a roller. A second rail 4 on which the first roller 5 rolls is arranged on a frame 9 for a rail and the frame 10 for a roller and the frame 9 for a rail are assembled into a cube-shape, so that they are arranged movably in between the upper frame 1 and the lower frame 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a seismic isolation device that damps vibrations (vibrations) such as earthquakes.

[0002]

2. Description of the Related Art Conventionally, as a seismic isolation device, for example, one disclosed in Japanese Patent Laid-Open No. 2000-14472 is known.

In this conventional seismic isolation device, rails extending linearly in the lateral direction and curved in the vertical direction and rollers for rolling the rails are arranged in a well shape with an angle of approximately 90 degrees.
The rail is perforated as a closed type having an arc-shaped long hole groove in a rail frame in which elongated plate members are vertically assembled in two stages. The rollers are attached to a roller frame arranged inside the rails, in which elongated plate members are vertically assembled in two steps.

According to this conventional seismic isolation device, the roller rolls up the rail due to the lateral vibration and rises up, and when the lateral vibration disappears, the roller moves against the rail under its own weight (such as the load of the seismic isolation target). Roll down. Therefore, the vibration energy in the lateral direction is absorbed and attenuated by the vertical displacement of the roller.

[0005]

However, in the above-described conventional seismic isolation device, the two rails that extend linearly in the lateral direction and are curved in the vertical direction are arranged in series on the same base axis. Therefore, in order for the seismic isolation device to exert sufficient performance in seismic isolation operation, it is necessary to design the rail to have a rail length of a predetermined length or more and to secure the rolling distance of the roller rolling on the rail. Therefore, the external dimensions of the seismic isolation device are limited to the rail length, and there is a problem that it is difficult to design the external dimensions to be equal to or smaller than the sum of the rail lengths of two rails.

The present invention has been made in consideration of the above problems, and secures a rolling distance of a roller rolling on a rail to exert a sufficient seismic isolation performance and a seismic isolation device. It is an object of the present invention to provide a seismic isolation device whose outer dimensions are not limited to the rail length.

[0007]

[Means for Solving the Problems] In order to solve the above-mentioned problems, the seismic isolation apparatus according to the present invention employs the following means.

That is, according to claim 1, a seismic isolation device in which rails extending linearly in the lateral direction and curved in the vertical direction and rollers for rolling the rails are arranged in a well shape at an angle of approximately 90 degrees. In the above, the upper base fixed to the seismic isolation target and the lower mount fixed to the support surface on which the seismic isolation target is installed face each other between the seismic isolation target and the support surface, and the first roller rolls. A second rail that is moved and a second roller that rolls on the first rail are arranged between an upper frame and a lower frame, and two first rails are set as a set, and an arrangement area is provided. Are partly overlapped and arranged in parallel.

According to this means, the two first rails are partially overlapped and arranged in parallel, so that the rolling distance of the roller rolling on the rail is secured and sufficient seismic isolation performance is obtained. It will be possible to demonstrate. Therefore, the external dimensions of the seismic isolation device can be reduced by the length of the overlapping section in which the two first rails overlap. Moreover, the installation space is reduced by arranging the rails and rollers separately in a fixed and movable manner, and the upper and lower mounts are made to face the seismic isolation target and the supporting surface, and the first rail and the first roller are reinforced. By installing it properly, the seismic resistance is enhanced and twist deformation due to vibration is prevented.

According to a second aspect of the present invention, in the seismic isolation apparatus according to the first aspect, the second roller is a set of two wheels having different projecting lengths from the roller frame, and is arranged in the longitudinal direction of the first rail. On the other hand, the rolling sections of the respective second rollers which are arranged in the vertical direction and roll on the first rail are partially overlapped.

According to this means, when the second roller arranged as a set of two wheels rolls in the overlapping section where the two rails of the first rail overlap, each rolling section of the two wheels Since they are duplicated, the vibration transmitted to the seismic isolation target in the seismic isolation operation is reduced.

Since the second roller is not installed between the first rail and the roller frame, the installation space can be reduced.

According to a third aspect of the present invention, in the seismic isolation device according to the first or second aspect, two second rails form one set,
It is characterized in that a part of the disposition area is overlapped and disposed in parallel.

In this means, the two second rails are partially overlapped and arranged in parallel, so that the rolling distance of the first roller rolling on the second rail is ensured and sufficient. It becomes possible to exert seismic isolation performance.

According to a fourth aspect of the present invention, in the seismic isolation apparatus according to any one of the first to third aspects, the first roller is a set of two wheels having different protruding lengths from the bearing portion, and the first roller has a second rail. The rolling sections of the first rollers, which are arranged in the vertical direction with respect to the lengthwise direction and roll on the second rail, are partially overlapped.

According to this means, when the first roller arranged as a set of two wheels rolls in the overlapping section in which the two rails of the second rail overlap, each rolling section of the two wheels. , The vibration transmitted to the seismic isolation target in the seismic isolation operation is reduced.

Further, the first roller is projected from the side surface of the bearing portion without being sandwiched between the second rail and the bearing portion.
It is possible to reduce the installation space.

A fifth aspect of the present invention is the seismic isolation apparatus according to any of the first to fourth aspects, wherein the two second rails are integrally formed in a columnar shape.

By this means, the strength of the rail is improved to improve the earthquake resistance and prevent the torsional deformation due to the vibration.

[0020]

Embodiments of the seismic isolation device according to the present invention will be described below with reference to the drawings.

1 to 3 show an embodiment (1) of a seismic isolation device according to the present invention.

In this embodiment, the supporting surface F on which the seismic isolation target P is installed is shown as a slab which is a structural body. Moreover, what is installed on the pedestal B fixed to the support surface F is shown.

The seismic isolation device 100 of this embodiment is mainly composed of an upper frame 1, a lower frame 2, a first rail 3, a second rail 4, a first roller 5 and a second roller 6.

The upper pedestal 1 is a flat plate member facing the seismic isolation target P and having a relatively large thickness, and is formed in a rectangular shape having a long side W2 and a short side W1. A fixed surface 8a of a bearing portion 8 formed in a box shape is abutted and fixed along the longitudinal side of the lower surface of the upper frame 1. The first roller 5 is attached via a bearing portion 8. The upper surface of the upper pedestal 1 is brought into contact with and fixed to the seismic isolation target P.

The first roller 5 includes two rollers 5a on one side,
5b are installed with an installation distance R2, and a total of 4 bearings 8
Is attached so as to project from the side surface side adjacent to the fixed surface 8a.

The lower pedestal 2 is a flat plate material having a relatively large thickness facing the support surface F, and is formed in a rectangular shape corresponding to the upper pedestal 1. A first rail 3 is attached along the short side of the upper surface of the lower mount 2. The lower surface of the lower mount 2 is
The pedestal B is brought into contact with and fixed.

The first rail 3 is a set of two rails 3a and 3b on one side which extend linearly in the lateral direction and are curved in the vertical direction. D
1 are arranged in parallel to each other. The rail length of each of the two rails on one side is four and the rail length is L1, and the second roller 6 rolls on each rail.

The second rail 4 on which the first roller 5 mounted on the upper mount 1 rolls is engraved on a columnar rail frame 9.

The second rail 4 has a rail length L2, and one side is linearly extended in the lateral direction in which the two rollers 5a and 5b are respectively rolled, and is curved in the vertical direction, and is disposed on the same basic axis. It is composed of rails 4a and 4b. Further, since the two rails 4a and 4b are installed in parallel on the same base shaft, the protruding lengths from the bearing portion 8 of the first roller are installed to be the same length.

The second roller 6 rolling on the first rail 3 mounted on the lower mount 2 is mounted on a columnar roller frame 10.

The second rollers 6 are arranged in parallel so that the disposition areas are partially overlapped, and the rollers 6a corresponding to the two rails 3a and 3b on one side provided with the overlap section D1.
The two rollers 6a and 6b on one side are configured to have protrusion lengths d1 and d2 from the roller frame 10, respectively.
Is configured to be.

Each of the rail frame 9 and the roller frame 10 is assembled in a two-well shape, and is formed into a trolley shape together with the second rail 4 and the second roller 6.
It is movably arranged between the lower frame 2 and the lower frame 2.

The first rollers 5a and 5b are connected to the second rail 4
The second rollers 6a and 6b are arranged with a distance R2 between the rollers so that they are located substantially in the center of the respective rollers a and 4b.
Are arranged at an installation distance R1 like the first roller 5. Therefore, the first roller 5 and the second roller 6 roll on their respective rails within the rail length range during seismic isolation operation, and the rolling distance thereof is approximately 1/2 of each rail length, and the stroke S2. , S1.

The first rail 3 of the seismic isolation device 100 having the above-described structure does not have two rails arranged in a straight line as in the above-described conventional seismic isolation device, but has an installation area. Since the overlapping section D1 is formed by partially overlapping, the external dimension of the seismic isolation device formed in a rectangle has a short side length of W1 = L1 + L1.
-D1, and it is possible to reduce the length of the overlapping section D1.

Further, the seismic isolation device 100 capable of reducing the length of the overlapping section D1 has the same length as the seismic isolation device 100 without reducing the rail length of the first rail 3 on which the second roller 5 rolls. Since the outer dimensions are reduced, each rail length L1 is ensured for the seismic isolation device to exert sufficient performance in seismic isolation operation, and the rolling distance of the roller rolling on the rail is sufficiently provided.

Therefore, the seismic isolation device 100 is not limited to the rail length of the first rail 3 in which the seismic isolation device 100 is installed, and the seismic isolation target P
It is possible to provide the seismic isolation device 100 corresponding to various shapes, sizes, and the like.

Further, the rail frame 9 and the roller frame 10 are assembled in a well shape and movably interposed between the upper mount 1 and the lower mount 2, whereby the first roller 5a,
5b, from the side surface side adjacent to the fixed surface 8a of the bearing portion 8,
It is easier to install the second rail vertically protruding in the vertical direction, and the upper mount 1 and the lower mount can be installed more easily than when the first rollers 5a and 5b are installed on the surface opposite to the fixed surface 8a. Two
With respect to the distance between and, the width of the wheels of the first rollers 5a and 5b can be reduced, and the center of gravity of the seismic isolation target P can be kept low. Therefore, the seismic isolation target P is more stably fixed to the upper surface of the upper mount 1.

Further, the second rollers 6a, 6b protruding from the roller frame 10 are also installed so as to vertically project in the length direction of the first rail, so that the upper mount 1 and the lower mount 2 are separated from each other. The center of gravity of the seismic isolation target P can be made lower by reducing the distance from the distance.

The first rail 3 having the overlapping section D1
Corresponding to a and 3b, the second rollers 6a and 6b differ from the roller frame 10 in the protruding lengths d1 and d2. Therefore, the self-weight of the seismic isolation target P is supported on two straight lines instead of being supported on one straight line as in the conventional seismic isolation device, so that it is dispersed and supported over a wide range of the seismic isolation device 100. Provided with more stable seismic isolation performance.

Next, the seismic isolation operation of the second rollers 6a and 6b rolling on the first rails 3a and 3b having the overlapping section D1 during the earthquake motion will be described with reference to FIG.

The second rails 6a and 6b are arranged at approximately the central portion 30a of the first rails 3a and 3b which extend linearly in the lateral direction and are curved in the vertical direction, and the rail frame 9 assembled in a well shape, A seismic isolation target P is fixed to the upper surface of an upper frame installed via the roller frame 10.

At the time of earthquake motion, the support surface F moves in the C direction, for example. As the support surface F moves, the second rollers 6a, 6
b is the direction from the central portion 30a to one end portion 30b of the rail
Start rolling in (D direction). The second rollers 6a and 6b are
The stroke length of the distance S1 (approximately 1/2 of the rail length) is in the range from the central portion 30a to the one end portion 30b. Therefore, the second roller 6 rolling in the D direction also moves the seismic isolation target P horizontally in the D direction at the maximum distance S1.

For example, the second roller 6b is connected to the first rail 3b.
The upper part rolls in the D direction with the swing width of the maximum stroke length S1. At that time, the second roller 6a rolls to the one end 30b on the first rail 3a. After that, the second rollers 6a and 6b, which start rolling in the C direction, move to the other end portion 30c. Therefore, similarly to the above-mentioned conventional example, the first roller 5 and the second roller 6 roll up the second rail 4 and the first rail 3 in response to the vibration in the lateral direction and ascend, and the vibration in the lateral direction occurs. When it disappears, the first roller 5 and the second roller 6 roll on the second rail 4 and the first rail 3 by their own weight (the load of the seismic isolation target P, etc.) and descend. Therefore, the lateral vibration energy is absorbed and attenuated by the vertical displacement of the first roller 5 and the second roller 6.

In this embodiment, the two first rails 3
a and 3b are arranged in parallel so as to provide an overlapping section D1 in the arrangement area. Therefore, the stroke lengths S1 of the second rollers 6a and 6b that roll due to the vibration in the lateral direction overlap each other in the overlapping section D1, and the overlapping distance is approximately D.
Since the vibration in the lateral direction in which the vibration energy for the overlap distance D1 is attenuated is transmitted to the upper mount 1, the absorption and attenuation of the vibration energy is further improved.

Further, in the operation of absorbing and damping the vibration energy, the upper pedestal 1 is formed of a relatively thick plate material facing the seismic isolation target P, and the first roller 5 and the bearing portion 8 serve as a reinforcing material. First mounted and formed of relatively thick plate material
Since the rail 3 is attached as a reinforcing material, the seismic resistance is increased and twist deformation is prevented. Therefore, an effective seismic isolation function is provided for a long period of time.

The second rail 4, the second roller 6, the rail frame 9, and the roller frame 10, which are assembled in a well shape and are formed into a dolly, are movable between the upper pedestal 1 and the lower pedestal 2. And the first roller 5, the bearing portion 8, and the first rail 3, which are fixedly mounted on the upper mount 1 and the lower mount 2, are separately arranged, so that the upper mount 1, the lower mount 2
The installation space, which is the space between, becomes low. Therefore, it can be easily installed on the support surface F consisting of an underfloor slab,
The center of gravity of the seismic isolation target object P fixed to the upper surface of the upper mount 1 can be maintained at a lower position, and stable seismic isolation performance can be exhibited.

FIG. 4 and FIG. 5 show the embodiment (2) according to the present invention.

In this embodiment (2), the areas where the two second rails of the above-described embodiment (1) are arranged are partially overlapped, and the rail overlapping section D2 is formed in the same manner as the first rail. It is arranged so as to form.

The second rail 4 of this embodiment (2) is
The rail length is L2, and one side is linearly extended in the lateral direction in which the two rollers 5a and 5b are respectively rolled, and is curved in the vertical direction. An overlapping section D2 is formed by the rails 4a and 4b which are overlapped and arranged in parallel. The rails 4a and 4b are
It is formed integrally with a columnar roller frame.

Further, since the first roller 5 corresponds to the two rails 4a and 4b on one side which are arranged so that the overlapping areas D2 are formed by overlapping the arrangement areas, the first roller 5 is a bearing on one side. The protrusion length from the portion 8 is different. The protruding lengths of the rollers 5a and 5b are d3 and d4 from the side surface side of the bearing portion 8 adjacent to the fixed surface 8a.

In this embodiment (2), the seismic isolation device 100 of the above-described embodiment (1) can have an outer dimension in the long side direction of W2 = L2 + L2-D2. It is possible to provide the seismic isolation device 100 having a reduced external size and a reduced size without lowering the seismic performance.

Therefore, the seismic isolation device 100 is not limited to the rail length of each rail to be installed, and is a highly versatile seismic isolation device 10 corresponding to various shapes and sizes of the seismic isolation target P.
0 can be provided.

Also, in the second rail 4 and the first roller 5, the protrusion lengths of the first rollers 5a and 5b are formed to be d3 and d4 corresponding to the second rail 4 having the overlapping area. The load due to the own weight of the seismic isolation target P is dispersed to provide more stable seismic isolation performance.

Further, since the two second rails 4a and 4b are formed integrally with the columnar rail frame 9,
In addition to preventing twisting deformation during seismic isolation operation, it can be manufactured inexpensively and easily with an NC machine tool or the like.

Further, as shown in FIG. 5, the supporting surface F moves in the G direction, for example, during an earthquake motion. With the movement of the support surface F, the first rollers 5a and 5b start rolling from the central portion 50a toward the one end portion 50b of each rail (H direction). The first rollers 5a, 5b have a stroke length of a distance S2 (approximately 1/2 of the rail length) in the range from the central portion 50a to the one end portion 50b, and are separated by the second roller 6 rolling in the H direction. The object P to be shaken is horizontal and the distance S2 is horizontal H
Will move in the direction.

Then, the first roller 5b is connected to the first rail 4b.
When rolling up in the H direction with the swing width of the maximum stroke length S2, the first roller 5a moves toward the one end portion 50 on the first rail 4a.
Roll to b. Then, the first rollers 5a and 5b, which start rolling in the G direction, move to the other end 50c. Therefore, similarly to the above-mentioned conventional example, the first roller 5 and the second roller 6 roll up the second rail 4 and the first rail 3 in response to the vibration in the lateral direction and ascend, and the vibration in the lateral direction occurs. When it disappears, the first roller 5 and the second roller 6 roll on the second rail 4 and the first rail 3 by their own weight (the load of the seismic isolation target P, etc.) and descend. Therefore, the lateral vibration energy is absorbed and attenuated by the vertical displacement of the first roller 5 and the second roller 6.

In this embodiment (2), the two first rails 4a and 4b are arranged so as to provide an overlapping section D2 in the arrangement area. Therefore, the stroke lengths S2 of the first rollers 5a and 5b that roll due to the vibration in the lateral direction overlap each other in the overlapping section, and the overlapping distance is about D2, and the vibration energy corresponding to the overlapping distance D2 is attenuated in the lateral direction. Since the vibration is transmitted to the upper mount 1, the absorption and damping of vibration energy are further improved. It should be noted that other actions and effects are achieved in the same manner as in the above-described embodiment (1).

6 to 8 show an embodiment (3) according to the present invention.

In this embodiment (3), openings 7a and 7b are opened at approximately the center of the upper frame 1 and the lower frame 2 of the above-mentioned embodiment (1).

The seismic isolation device 100 of this embodiment (3)
Assuming that the seismic isolation target P fixed to the upper surface of the upper mount 1 is a rack S such as an electronic device such as a server rack or an exhibition stand for works of art, wiring such as lighting and cables when used. There are provided openings 7a and 7b for inserting.

An opening 7a for wiring, which is square and has a side of W3, is opened at approximately the center of the upper mount 1.

An opening 7b for wiring, which is square and has a side of W4, is opened at approximately the center of the lower mount 2.

Further, the protective member 12 is supported in the wiring opening 7a of the upper mount 1 via the support plate 11. The support plate 11 is provided with a mounting hole 11a in which a protective member 12 is fitted and mounted in the central portion thereof, and a large number of elongated ventilation holes 1 are formed in the periphery.
Since 1b is perforated in a staggered manner and surrounded by a mounting frame 11c, the mounting frame 11c is screwed onto the upper mount 1
It is fixed to.

The protective member 12 is an elastic body formed by a coil spring into a deformed conical cylinder shape. A minimum diameter portion 12a is provided in the vicinity of a lower end portion having a diameter reduced from the upper portion, and a lower end below the minimum diameter portion 12a. The expansion portion 12b having a larger diameter than the minimum diameter portion 12a is provided in the portion, and the upper portion is fitted and mounted in the mounting hole 11a of the support plate 11, and the expansion portion 12b is an opening for wiring of the lower mount 2. It is located between the first rails 3, the second rails 4, the first rollers 5, and the second rollers 6 which are in the shape of a well in a free state facing the portion 7b.

According to this embodiment (3), the upper mount 1
Is formed of a relatively thick plate material facing the rack S, the first roller 5 and the bearing portion 8 are attached as a reinforcing material, and the first rail 5 is formed of a relatively thick plate material and the first rail 3 is a reinforcing material. Since it is attached to the, the seismic strength is increased and twist deformation is prevented. Therefore, the effective seismic isolation function is exhibited for a long period of time, and the opening 7 is opened in the upper mount 1 and the lower mount 2.
It is possible to form a and 7b to the maximum size.

Further, the second rail 4, the second roller 6, the rail frame 9, and the roller frame 10, which are formed in a dolly, are movably arranged between the upper mount 1 and the lower mount 2 to provide the upper mount. Since the first roller 5, the bearing portion 8, and the first rail 3 which are fixedly mounted on the base 1 and the lower mount 2 are separately arranged, the installation space which is the space between the upper mount 1 and the lower mount 2 is reduced. Get lower. Therefore, it can be easily installed on the support surface F formed of an underfloor slab.

Therefore, by utilizing the space between the pedestal 2 and the supporting surface F below the pedestal B, the wiring equipment C, which is arranged under the floor and is connected to an exhibition stand or electronic devices, is installed under the lower pedestal. Can be retracted. Then, the wiring equipment C that has been pulled in is provided with an opening 7b for wiring of the lower mount 2 and a protective member 12 (the upper mount 1
Through the wiring opening 7a), and can be connected to a rack S which is an exhibition stand or electronic equipment. Therefore, since it is not necessary to install the wiring facility C for an unnecessarily long time, the seismic isolation operation of each rail and roller is not hindered during seismic isolation.

In the protection member 12 in the operation of absorbing and attenuating the vibration energy described above, the minimum diameter portion 12a comes into contact with the wiring equipment C by the displacement of the upper pedestal 1 and the lower pedestal 2 to elastically deform the whole, and the wiring equipment C. Buffer protect. The expanded portion 12b of the protection member 12 facilitates elastic deformation of the protection member 12. Further, since the expanded portion 12b of the protection member 12 is in a free state with respect to the lower mount 2, the elastic deformation amount of the protection member 12 becomes large.

Further, according to this embodiment (3),
The inside of the protection member 12 and the ventilation hole 11b of the support plate 11 ensure the ventilation A between the rack S side and the support surface F side. Therefore, it is possible to circulate the cooling air supplied from under the floor to the rack S including electronic devices and the like.

Further, as shown in FIG. 8, for example, the first roller 5 moves on the second rail 4 in the X direction by the rolling distance S1 during seismic isolation, and the second roller 6 moves on the first rail in the Y direction. Move to rolling distance S2. At this time, the upper mount 1 and the lower mount 2
Of the openings 7a and 7b of which one side length is W
5, the other side length is formed in a rectangle of W6, the wiring such as a cable connected to the support surface F and the rack S can be surely inserted, and the first rail 3, the second rail 4, and the like in the seismic isolation operation
It does not interfere with the first roller 5 and the second roller 6. Therefore, the seismic isolation performance does not deteriorate, and the wiring such as the cable connected to the rack S is not damaged. It should be noted that other actions and effects are achieved in the same manner as in the above-described embodiment (1).

9 and 10 show the embodiment (4) according to the present invention.

In this embodiment, the air conditioning equipment K is provided on the support plate 11 of the above-mentioned embodiment (3).

The air conditioning equipment K is composed of a ventilation fan 20 and a small motor for driving the ventilation fan 20 (not shown), and the small motor is installed inside the ventilation fan 20.

The ventilation fan 20 is constructed by assembling a rectangular mounting frame 21 and a plurality of rotating blades 22 via a shaft 23.

Ventilation fan 20 constructed in this way
Four are installed on the edge of the support plate 11 to which the protective member 12 is attached. The ventilation fan 20 is installed on the lower surface side of the support plate 11 using a wide space formed by the rail frame 9 and the roller frame 10 that are movably arranged.

According to the embodiment (4), when the rack S is an electronic device such as an exhibition stand, a server, a computer, etc., heat is usually generated from the electronic device main body and the wiring facility C, so that the support surface F or the support surface is supported. Cooling air N is introduced from the lower part of the surface F (under the floor) and is ventilated to the rack S. Therefore, the cooling air N supplied from the support surface F is forcibly guided to the rack S by the air conditioning facility K, and the rack S can be held in a good state. Further, even when the rack S is provided with a cooling facility such as a cooler, the cooling air N discharged from the rack S can be forcedly inserted into the support surface F.

Further, the air conditioning equipment K can forcibly discharge the air or the cooling air N passing through the inside of the protection member 12, and the air between the rack S and the support surface F can be forcibly discharged. Alternatively, it becomes possible to inhale.

Further, since the air conditioning equipment K is fixed to the edge of the support plate 11 installed in the opening 7a, it is not necessary to secure an installation place on the upper mount 1 or the lower mount 2, and the wiring equipment C Can be arranged according to the design of It is also possible to install it not at the support plate 11 but at the edge of the opening 7b of the lower pedestal 2, and the installation area of the air conditioning equipment K is the upper pedestal 1, the lower pedestal 2, the rail frame during seismic isolation operation. 9. The movement of the roller frame 10 is not hindered. Other actions and effects of this embodiment (4) are almost the same as those of the above-mentioned embodiments (1) and (3).

Further, the first rail 3 is attached to the upper mount 1,
It goes without saying that the seismic isolation performance of the seismic isolation device 100 and the operation and effect of the above-described embodiment are similarly exhibited even if the first roller 5 is attached to the lower mount 2 and the configuration of this embodiment is reversed. Yes.

Further, the first rail 3 is provided with the individual rails 3a and 3b, which are a set of two, on the lower mount 2, but like the second rail 4, they are integrally formed. You may. On the contrary, the second rails 4a and 4b can be individually formed and arranged.

Next, the present invention will be described in detail with reference to examples. (Embodiment 1) In FIG. 2, the rail lengths of the first rail 3 and the second rail 4 need to ensure the rolling distances of the first roller 5 and the second roller 6 rolling on the respective rails. .
In order to exert sufficient seismic isolation performance, the rail length of the first rail 3 and the second rail 4 must be designed to be about 400 mm or more. Therefore, in the conventional seismic isolation device in which the first rail 3 and the second rail 4 are arranged in series on the same base axis, the outer dimensions of both W1 and W2 are about 800 mm.
Is the minimum external dimension.

A seismic isolation device 100 designed with the structure of the present invention.
The first rails 3 are arranged in parallel so as to form a partially overlapping section D1 in the disposition area as a set of two rails, and the overlapping section D1 is designed to be about 100 mm. Without shortening the rail length, the rolling distance of the second roller 6 rolling on the first rail 3 can be sufficiently secured, and one side W1 of the external dimension can be reduced, and W1 is about 700 m.
It was able to be manufactured in m or less.

[0083]

As described above, in the seismic isolation device according to the present invention, the first rail is made up of two sets, and the first rails are arranged so that the disposition areas are partially overlapped to form an overlapping section. Is installed,
The external dimensions of the seismic isolation device can be reduced by the length of the overlapping section, and the external dimensions of the seismic isolation device can be reduced without reducing the rail length of the first rail on which the second roller 5 rolls. The rail length of the first rail is ensured to allow the seismic isolation device to exhibit sufficient performance in seismic isolation operation, and the rolling distance of the second roller rolling on the first rail is sufficiently provided. Therefore, the seismic isolation device is not limited to the rail length of the first rail to be provided, and can provide the seismic isolation device corresponding to various shapes, sizes, etc. of the seismic isolation target.

Further, the stroke length of the second roller rolling due to the lateral vibration is overlapped by the overlapping section of the first rail, and the lateral vibration in which the vibration energy for the overlapping distance is attenuated is transmitted to the upper mount. Therefore, the absorption attenuation of the vibration energy is further improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment (1) of a seismic isolation device according to the present invention.

FIG. 2 is a plan view showing a part of FIG. 1 removed.

FIG. 3 is a central vertical cross-sectional view of the installed state of FIG.

FIG. 4 is a plan view showing an embodiment (2) of the seismic isolation device according to the present invention.

5 is a central vertical cross-sectional view of the installed state of FIG.

FIG. 6 is a perspective view showing an embodiment (3) of the seismic isolation device according to the present invention.

7 is a central vertical cross-sectional view of the installed state of FIG.

FIG. 8 is a simplified cross-sectional view during seismic isolation operation in FIG.

FIG. 9 is a perspective view showing an embodiment (4) of the seismic isolation device according to the present invention.

10 is a central vertical cross-sectional view of the installed state of FIG.

[Explanation of symbols]

1 Top stand 2 Lower stand 3 first rail 4 second rail 5 First roller 6 Second roller 7 openings 8 bearing Frame for 9 rails Frame for 10 rollers 11 Support plate 12 Protective material 100 seismic isolation device P seismic isolation target S rack F support surface

Claims (5)

[Claims] 1. A seismic isolation device in which rails that extend linearly in the lateral direction and curves in the vertical direction and rollers that roll the rails are arranged in a well shape at an angle of approximately 90 degrees. The upper platform fixed to the object and the lower platform fixed to the support surface on which the seismic isolation target is installed are faced between the seismic isolation target and the support surface, and the first roller is rolled. The rail and the second roller rolling on the first rail are arranged between the upper mount and the lower mount, and two first rails form one set, and a part of the disposition area overlaps. A seismic isolation device characterized by being arranged in parallel. 2. The seismic isolation device according to claim 1, wherein
A pair of two rollers, each of which has a different protruding length from the roller frame, is arranged in the vertical direction with respect to the length direction of the first rail, and each roller rolls on the first rail.
The seismic isolation device is characterized in that the rolling sections of the rollers are partially overlapped. 3. The seismic isolation device according to claim 1 or 2, wherein two second rails form one set, and a part of the installation area is overlapped and is installed in parallel. Seismic isolation device. 4. The seismic isolation device according to claim 1, wherein the first roller has a different protruding length from the bearing portion.
One set of wheels is arranged in the vertical direction with respect to the length direction of the second rail, and the rolling sections of the respective first rollers rolling on the second rail partially overlap each other. Seismic isolation device. 5. The seismic isolation device according to claim 1, wherein the two second rails are integrally formed in a columnar shape.