JPH09158986A - Base isolation support device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a base isolation support device compact and facilitate its installation by supporting an overturn preventing plate on a base isolation rubber, and supporting a supported object on the overturn preventing plate. SOLUTION: A base isolation rubber 3 is fixed on a fixed base 2 by bolts 10, 10, and a stopper bolt 5 is fixed while its head 5a is located below. A displacement allowing gap 4a is formed on the overturn preventing plate 4 so that the shaft section 5b of the stopper bolt 5 is idly inserted, and it prevents the overturn of a supported object 9 by the vibration larger than estimated in cooperation with an overturn preventing presser plate 6a. When this base isolation support device 1 is to be fitted to the supported object 9, the shaft section of a leveling bolt 7 supported by the bolt insertion hole 4b and the counterbore section 4c of the overturn preventing plate 4 is inserted into the insertion hole 9a of the supported object 9, and a leveling bolt rotating nut 7a is rotated to adjust the leveling of the base isolation support device 1. A fixing nut 8 is fastened to fix the supported object 9 and the base isolation support device 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic isolation support device that makes it difficult to transmit vibrations such as an earthquake and prevents equipment / device from falling, and in particular, a seismic isolation rubber and a support device are integrally provided. It relates to seismic isolation support devices.

[0002]

2. Description of the Related Art A seismic isolation device, a supporting device, and the like are examples of devices for protecting equipment and devices from vibrations such as earthquakes.

As the seismic isolation device, there are a device for buildings such as houses and buildings, and a seismic isolation table or a vibration isolation table for equipment and devices. In the seismic isolation device, vibration is not transmitted to the supported object due to the seismic isolation rubber 41 formed by alternately laminating the rubber 41a and the metal plate 41b as shown in FIG. 4, the sliding bearing, and the moving device by the roller. Or difficult to communicate. Further, the seismic isolation device uses a damper to quickly contain the vibration, or uses a high damping material as the rubber material of the seismic isolation rubber 41.

These seismic isolation devices are usually designed to function with respect to horizontal vibrations, but there are also seismic isolation devices that have a similar function to vertical vibrations. .

On the other hand, as shown in FIG. 3, in the overturn-prevention type supporting device 31, the tip of the shaft portion 35b of the stopper bolt 35, which is erected and fixed to the mounting base 32, is attached to a device / apparatus or the like. Insertion hole 39a formed in the supported object 39
The fall prevention pressing member 36 is screwed and attached to the shaft portion 35b protruding from the insertion hole 39a, and when the vibration is generated, the fall prevention pressing member 36 is attached to the supported object 39.
By abutting against, the fall of the supported object 39 is prevented.

[0006]

However, in the conventional seismic isolation device, the seismic isolation effect (response vibration / input vibration) is about 1 or less.
Most were / 10 or less. For example, when a seismic isolation device such as seismic isolation rubber is used, the frequency of the earthquake is low. Therefore, in order to obtain an approximately 1/10 level seismic isolation effect, the entire building or floor should be supported. The weight was increased and the natural frequency of the support system was decreased. Further, even when a seismic isolation device such as a seismic isolation table or a vibration isolation table is used, the natural frequency of the support system is reduced by increasing the weight of the table. For this reason, the seismic isolation floor and seismic isolation table are large and heavy in weight, and when applied to the existing equipment, the operation of the equipment has to be stopped.

Further, a seismic isolation device such as a seismic isolation rubber needs to be installed when a building or the like is newly built, which requires careful planning in advance and a large amount of cost. Therefore, it was very difficult to apply the seismic isolation device to the existing building. Similarly, a seismically isolated floor or seismic isolation table, which is relatively easy to apply to existing equipment and devices, requires a large amount of cost for installation. In other words, it was not possible to select the seismic isolation device according to the equipment, etc., considering the seismic isolation effect and price.

In the conventional supporting device, in order to prevent the equipment / device from falling due to a large vibration, the supporting device itself has to be made large in size, or a large number of supporting devices have to be installed, which requires a large amount of cost. It was

Therefore, the present invention is to solve the above-mentioned problems, and to provide a seismic isolation support device that is compact and inexpensive, and that is easy to install.

[0010]

In order to solve the above-mentioned problems, the invention of claim 1 mounts a seismic isolation rubber on a fixed base fixed to a floor or the like, and supports a fall prevention plate on the seismic isolation rubber. Support the supported object on the fall prevention plate,
The fall prevention plate and the fixed base are connected by a supporting device.

According to a second aspect of the present invention, the seismic isolation rubber is a rubber body formed by alternately laminating rubber and metal plates, and is integrally provided above and below the rubber body, and the fixed base and the overturn are provided. The seismic isolation support device according to claim 1, comprising a fixing plate connected to the prevention plate.

According to a third aspect of the present invention, the support device includes a stopper bolt that is erected on the fixed base, and a displacement allowance hole that is formed in the fall prevention plate and that loosely fits the stopper bolt. The seismic isolation support device according to claim 1, further comprising a fall prevention presser member that is screwed into the stopper bolt and protrudes from the displacement allowing hole.

A fourth aspect of the present invention is the seismic isolation support apparatus according to the first aspect, wherein the object to be supported is supported on the fall prevention plate by a leveling bolt so as to be adjustable in height.

According to a fifth aspect of the present invention, the leveling bolt is fixedly provided on the seismic isolation rubber, and the seismic isolation rubber is rotatably provided on the fixed base via a bearing. It is a seismic isolation support device.

The inventors of the present invention rarely need a seismic isolation device having a seismic isolation effect of about 1/10 level among ordinary facilities / equipment, and about 1/2 to 1 if a supporting device is used together.
We focused on the fact that a seismic isolation device with a seismic isolation effect of / 3 is sufficient. As a result, it becomes unnecessary to add unnecessary heavy objects to the seismic isolation device (seismic isolation rubber), and the seismic isolation rubber can be made as large as the existing support legs or casters. In addition, this seismic isolation rubber is much cheaper than conventional seismic isolation devices. Furthermore, with the downsizing of seismic isolation rubber, it will be possible to install it while the facilities and equipment are operating.

Also, by using the support device together with the seismic isolation device, it is possible to prevent the equipment / device from falling due to large vibration without enlarging the support device itself or installing a large number of support devices. Becomes

According to the above construction, since the seismic isolation rubber is directly supported on the object to be supported without adding unnecessary heavy weight and the supporting device is integrally provided on the seismic isolation rubber, the installation is easy and It is possible to obtain an inexpensive seismic isolation support device.

[0018]

Embodiments of the present invention will be described below.

The seismic isolation support device of the present invention is shown in FIG. still,
The same members as those in FIG. 3 are designated by the same reference numerals.

As shown in FIG. 1, the fixed base 2 having a bolt hole 2a is provided by being fixed to a floor or the like with a fixing bolt (not shown). A seismic isolation rubber fixing plate 3c is fixed to the upper surface of the fixed base 2 with bolts 10 and 10. Further, on the upper surface of the fixed base 2, a stopper bolt 5 composed of a head portion 5a and a shaft portion 5b on which a screw is formed,
The head portion 5a is provided below and fixed (welded in the figure).

The seismic isolation rubber 3 has a cylindrical rubber body 3a formed by alternately laminating rubber and metal plates and a seismic isolation rubber fixing plate 3
b, 3c. The rubber body 3a is provided by fixing the lower surface of the laminated surface to the seismic isolation rubber fixing plate 3c. The seismic isolation rubber fixing plate 3b is fixedly provided on the upper surface of the laminated surface of the rubber body 3a, and a counterbore 3d is formed on the upper surface so that the head portion of the leveling bolt 7 can be seated.

The fall prevention plate 4 made of metal is provided with a leveling bolt insertion hole 4 for inserting the shaft portion of the leveling bolt 7.
While b is formed, a counterbore portion 4c is formed on the lower surface thereof so that the head portion of the leveling bolt 7 can be seated.
In addition, the fall prevention plate 4 includes a shaft portion 5 of the stopper bolt 5.
A displacement allowance gap 4a is formed so that b can be loosely fitted. The fall prevention plate 4 and the seismic isolation rubber fixing plate 3b are provided by being fixed with bolts 10 and 10.

On the shaft portion 5b of the stopper bolt 5 protruding from the fall prevention plate 4, the fall prevention holding plate 6 is arranged in order from the bottom.
a, a fall prevention presser plate rotation nut 6b, and a stopper bolt fixing nut 6c are provided by screwing. A predetermined space (play) d is provided between the fall prevention presser plate 6a and the fall prevention plate 4. The fall prevention presser plate 6a and the fall prevention presser plate rotation nut 6b are fixed (welded in the figure).

It is composed of a head portion and a shaft portion, and has a spot facing portion 3d, a leveling bolt insertion hole 4b and a spot facing portion 4.
The shaft of the leveling bolt 7 supported by c is
Threads are formed. A leveling bolt rotation nut 7a and a leveling bolt fixing nut 8 are screwed on the shaft portion of the leveling bolt 7 in order from the bottom. The leveling bolt rotation nut 7a and the shaft portion of the leveling bolt 7 are fixed (welded in the figure). Leveling bolt 7 protruding from the leveling bolt fixing nut 8
The shaft portion is inserted into the insertion hole 9a formed in the supported object 9 and screwed with the leveling nut 7b on the supported object 9 side. The leveling nut 7b and the supported object 9 are fixed (welded in the figure) and provided.

In the present invention, the connection between the fixed base 2 and the seismic isolation rubber fixing plate 3c and the connection between the seismic isolation rubber fixing plate 3b and the fall prevention plate 4 are made by the bolts 10.
Needless to say, the connecting means is not limited to this, and may be, for example, bonding.

Next, the operation of the present invention will be described.

In order to mount the seismic isolation support device 1 of the present invention on the supported object 9, first, an insertion hole 9a for inserting the shaft portion of the leveling bolt 7 is formed in advance at a predetermined position of the supported object 9. A leveling nut 7b is arranged on the side opposite to the seismic isolation support device 1 with the supported object 9 interposed therebetween. Next, the hole of the leveling nut 7b and the insertion hole 9a are aligned with each other, and the leveling nut 7b and the supported object 9 are welded.
After that, the shaft portion of the leveling bolt 7 is inserted into the insertion hole 9a of the supported object 9, and the leveling bolt rotation nut 7a is rotated to adjust the leveling of the seismic isolation support device 1. After that, by tightening the leveling bolt fixing nut 8, the supported object 9 and the seismic isolation support device 1 are fixed. After that, by fixing the fixed base 2 to the floor with fixing bolts,
The seismic isolation support device 1 of the present invention is installed on a supported object 9. That is, by simply screwing the shaft portion of the leveling bolt 7 into the leveling nut 7b fixed to the supported object 9, the seismic isolation support device 1 of the present invention can be mounted on the supported object 9 such as existing equipment or equipment. It can be installed easily.

The seismic isolation rubber 3 has no columnarity in the horizontal direction because the rubber body 3a is formed in a cylindrical shape. For this reason, the seismic isolation rubber 3 makes it difficult to transmit any horizontal vibrations to the supported object 9. Further, since the seismic isolation rubber 3 is directly supported on the supported object 9 without adding unnecessary heavy objects, the size can be made compact, and
The manufacturing cost of the seismic isolation rubber 3 can be suppressed.

The seismic isolation support device 1 of the present invention is, of course, not limited to the case where horizontal vibration within the assumed range occurs.
Even when the horizontal vibration more than expected is generated, the supported object 9 is about 1/2 to 1 by the seismic isolation rubber 3.
/ 3 shaking (acceleration) is transmitted, and the stopper bolt 5
The shaft portion 5b comes into contact with the displacement allowance gap 4a of the fall prevention plate 4, whereby the fall of the supported object 9 can be prevented.

Similarly, not only when the vertical vibration within the expected range occurs, but also when the vertical vibration exceeding the expected range occurs, the supported object 9
Is to prevent the fall of the supported object 9 by transmitting the shake (acceleration) of about 1/2 to 1/3 by the seismic isolation rubber 3 and contacting the fall prevention presser plate 6a with the fall prevention plate 4. You can

Next, another embodiment of the present invention will be described.

The seismic isolation support system of this embodiment is shown in FIG. The same members as those in FIG. 1 are designated by the same reference numerals.

As shown in FIG. 2, the fixed base 2 having the bolt holes 2a is provided by being fixed to the floor with a fixing bolt (not shown). A circular counterbore 2b is formed on the upper surface of the fixed base 2 for seating the seismic isolation rubber fixing plate 13a. A bearing groove 18a is formed in an annular shape on the upper surface of the spot facing 2b. Further, on the fixed base 2, a stopper bolt 5 composed of a head portion 5a and a threaded shaft portion 5b is provided with the head portion 5a below and fixed (welded in the figure).

The seismic isolation rubber 3 is a cylindrical rubber body 3a formed by alternately laminating rubber and metal plates and the seismic isolation rubber fixing plate 1
3a, 13b.

The seismic isolation rubber fixing plate 13a having a disc shape is
A bearing groove 13c having the same diameter as the bearing groove 18a of the counterbore 2b is formed in an annular shape on the lower surface thereof. This seismic isolation rubber fixing plate 13a is provided with a plurality of (two in the figure) bearings 18 mounted in the bearing groove 18a, and the counterbore 2
It is mounted on b and is sandwiched between the rubber body 3a and the fixed base 2. Further, the seismic isolation rubber fixing plate 13a is held between the holding plate 16 and the fixing base 2 and fixed by the bolts 10 and 10.

The rubber body 3a has the lower surface of the laminated surface on the pressing plate 1.
Seismic isolation rubber fixing plate 13a seen inside the hole 16a of 6
It is fixedly installed. The seismic isolation rubber fixing plate 13b is provided so as to be fixed to the upper surface of the laminated surface of the rubber body 3a, and an insertion hole 4d for inserting the leveling shaft 17 is formed in the center thereof. Further, the seismic isolation rubber fixing plate 13b and the leveling shaft 17 are fixed (welded in the figure).

A leveling shaft insertion hole 4d for inserting the leveling shaft 17 is formed in the fall prevention plate 4 made of metal, and the shaft portion 5 of the stopper bolt 5 is formed.
A displacement allowance gap 4a is formed so that b can be loosely fitted. The fall prevention plate 4 and the seismic isolation rubber fixing plate 13b of the seismic isolation rubber 3 are
It is fixedly provided with bolts 10 and 10.

On the shaft portion 5b of the stopper bolt 5 protruding from the fall prevention plate 4, the fall prevention holding plate 6 is arranged in order from the bottom.
a, a fall prevention presser plate rotation nut 6b, and a stopper bolt fixing nut 6c are provided by screwing. A predetermined space (play) d is provided between the fall prevention presser plate 6a and the fall prevention plate 4. The fall prevention presser plate 6a and the fall prevention presser plate rotation nut 6b are fixed (welded in the figure).

Leveling shaft 1 that has been threaded
A leveling shaft fixing nut 8 is screwed on the screw 7. The leveling shaft 7 protruding from the leveling shaft fixing nut 8 is inserted into an insertion hole 9a formed in the supported object 9 and screwed with the leveling nut 7b on the supported object 9 side. The leveling nut 7b and the supported object 9 are fixed (welded in the figure) and provided.

Next, the operation of this embodiment will be described.

First, an insertion hole 9a for inserting the leveling shaft 17 is formed in advance at a predetermined position of the supported object 9, and the supported object 9 is sandwiched between the leveling nut and the seismic isolation support device 21. Place 7b. Next, the hole of the leveling nut 7b and the insertion hole 9a are aligned with each other, and the leveling nut 7b and the supported object 9 are welded.
After that, the shaft portion of the leveling shaft 7 is inserted into the insertion hole 9a of the supported object 9, and the entire seismic isolation rubber 3 is rotated to adjust the leveling of the seismic isolation support device 21. Then, by tightening the leveling shaft fixing nut 8, the supported object 9 and the seismic isolation support device 21 are fixed. After that, fixed base 2
The seismic isolation support device 21 of the present embodiment is installed on the supported object 9 by fixing it to the floor or the like with a fixing bolt.

That is, the seismic isolation support device 2 of the present embodiment
1 rotates the whole seismic isolation rubber 3 rotatably provided on the fixed base 2 via the bearing 18, thereby performing the leveling adjustment, thereby eliminating the need for a nut for rotating the leveling shaft. Therefore, when the seismic isolation support device 21 is attached to the supported object 9 that does not require leveling, the seismic isolation support device 21 of the present embodiment supports the seismic isolation support device 21 by the amount of nuts more than the seismic isolation support device 1 of the present invention. The height of the object 9 can be kept low. Accordingly, the seismic isolation support device 21 of the present embodiment is the seismic isolation support device 1 of the present invention.
It is possible to support the supported object 9 in a more stable state as compared with. Needless to say, even if the seismic isolation support device 21 of the present embodiment is used, the same effect as that of the seismic isolation support device 1 of the present invention can be obtained.

[0043]

In summary, according to the present invention, the following excellent effects are exhibited.

(1) Since the seismic isolation rubber and the supporting device complement each other in function, the object to be supported can be protected from vibration (shaking) such as an earthquake without using an expensive seismic isolating device. .

(2) Since the support device is integrally provided on the seismic isolation rubber, it can be easily attached to the object to be supported.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view showing a seismic isolation support device of the present invention.

FIG. 2 is a longitudinal sectional view showing another embodiment of the seismic isolation support device of the present invention.

FIG. 3 is a vertical cross-sectional view showing a conventional supporting device.

FIG. 4 is a vertical sectional view showing a conventional seismic isolation rubber.

[Explanation of symbols]

1 seismic isolation support device 2 fixed base 3 seismic isolation rubber 3a rubber body 3b, 3c fixing plate 4 fall prevention plate 4a displacement allowance hole 5 stopper bolt 6a fall prevention presser plate (fall prevention presser member) 6b fall prevention presser plate fixing nut (Tipping prevention presser member) 6c Stopper bolt fixing nut (Tipping prevention presser member) 7 Leveling bolt 9 Supported object 11 Supporting device 13a, 13b Fixing plate 17 Leveling shaft (Leveling bolt) 18 Bearing

Claims (5)

[Claims] 1. A seismic isolation rubber is mounted on a fixed base fixed to a floor or the like, a fall prevention plate is supported on the seismic isolation rubber, and a supported object is supported on the fall prevention plate to prevent the fall. A seismic isolation support device comprising a plate and the fixed base connected by a support device. 2. The seismic isolation rubber is a rubber body formed by alternately laminating rubber and metal plates, integrally provided above and below the rubber body, and connected to the fixed base and the fall prevention plate. The seismic isolation support device according to claim 1, further comprising a fixing plate. 3. The support device comprises a stopper bolt mounted upright on the fixed base, a displacement allowance hole formed in the fall prevention plate, into which the stopper bolt is loosely fitted, and a displacement allowance hole. The seismic isolation support device according to claim 1, comprising a fall prevention presser member screwed onto the protruding stopper bolt. 4. The seismic isolation support device according to claim 1, wherein the object to be supported is supported on the fall prevention plate by a leveling bolt so as to be adjustable in height. 5. The seismic isolation support device according to claim 4, wherein the leveling bolt is fixedly provided on the seismic isolation rubber, and the seismic isolation rubber is rotatably provided on the fixed base via a bearing.