JP2000154845A - Base isolation guide - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a base isolation guide capable of absorbing mounting error occurring when the base isolation guide is attached between a foundation and a base isolation object and receiving a large compression force. SOLUTION: Face plates 6a, 6b are attached to upper and lower faces of a guide device 5 consisting of first rails 2a, 2b, a guide block sliding on the first rails 2a, 2b, and second rails 3a, 3b sliding the guide block in the direction in which they cross the first rails 2a, 2b. A deformation member 9 is attached to an upper face of the face plate 6a. The face plate 6b is attached to a foundation, and the deformation member 9 is attached to a base isolation object. At this time, the deformation member 9 absorbs an error which occurs when a base isolation guide 1 is attached to the foundation and the base isolation object. By providing the face plates 6a, 6b, it is possible to increase an area of the deformation member 9 and bear a large compression force loading on the deformation member 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in a seismic isolation device for protecting a seismic isolation target such as a structure or a part of the floor from an earthquake or the like. The present invention relates to a seismic isolation guide that guides a vehicle to a predetermined foundation.

[0002]

2. Description of the Related Art As a conventional seismic isolation guide, a first linear rail, a guide block that slides on the first linear rail, and a second linear guide that slides on the guide block in a direction intersecting with the first linear rail. 2. Description of the Related Art There is known a device provided with a guide device including two straight rails. The first rail is attached to the foundation and the second rail is attached to the seismic isolation target. Rolling balls are interposed between the guide block and the first and second linear rails to reduce friction. When the guide device is mounted between the base and the seismic isolation target, a certain degree of accuracy is required for the mounting surface of the base and the seismic isolation target in order to maintain smooth circulation of the ball. However, on the mounting surface of the building foundation and seismic isolation target,
It is difficult to achieve the required accuracy when installing the guide device. For this reason, in the conventional seismic isolation guide, rubber is provided between the straight rail and the base or between the straight rail and the seismic isolation target, and the mounting error, particularly the inclination error of the seismic isolation target with respect to the foundation, is reduced. Absorbed.

[0003]

Generally, the guide device is
It has sufficient rigidity against a compressive force applied in the vertical direction and a pulling force applied in the floating direction, and can receive a high load. On the other hand, rubber has less rigidity than the guide device, and the compressive force that can be received is limited. There is a gap between the compression force received by the guide device and the compression force received by the rubber, and the compression force received by the entire seismic isolation guide is determined by the compression force received by the smaller rubber. Therefore, a seismic isolation guide capable of receiving a large compressive force cannot be obtained.

Accordingly, an object of the present invention is to provide a seismic isolation guide that can absorb a mounting error generated when the seismic isolation guide is mounted between a foundation and a seismic isolation target and that can receive a large compressive force. I do.

[0005]

Hereinafter, the present invention will be described. In addition, in order to facilitate understanding of the present invention, reference numerals in the accompanying drawings are added in parentheses, but the present invention is not limited to the illustrated embodiment.

According to a first aspect of the present invention, a first rail (2a, 2b) attached to a predetermined foundation (S) and a guide block (4) sliding on the first rail (2a, 2b) are provided.
...) and the second rails (3a, 3) which slide on the guide block (4 ...) in a direction intersecting with the first rails (2a, 2b) and are attached to the seismic isolation target (F).
b), the first rails (2a, 2b) and the second rails (3a, 3).
b), a face plate (6a, 6b) is attached to at least one of the base plates (6a, 6b). Guide (1)
The above-mentioned problem is solved by a seismic isolation guide (1) characterized in that a deformation member (9) for absorbing a mounting error generated when mounting is provided.

Here, the guide block (4) has a sliding portion with the first rail (2a, 2b) at a lower portion, and a sliding portion with the second rail (3a, 3b). You can use a single guide block (4 ...) at the top,
A first guide block body (4a) having a sliding portion with the first rail (2a, 2b) and a second guide block having a sliding portion with the second rail (3a, 3b). Guide blocks (4...) In which the main body (4b) is coupled back to back can also be used. In addition, rail (2
For a, 2b, 3a, 3b), a straight rail or a curved rail can be used.

According to the present invention, the first rail (2a,
2b) or the face plate (6) on the second rail (3a, 3b).
By providing a, 6b), the area of the deformable member (9) can be increased. By increasing the area of the deformable member (9), a large compressive force can be applied to the deformable member (9). Therefore, the rigidity of the deformable member (9) and the rigidity of the guide device (5) are balanced, and the entire seismic isolation guide (1) can receive a high compressive force. Further, since the deformable member (9) is provided between the face plate (6a, 6b) and the foundation (S) or the seismic isolation target (F), the deformable member (9) is deformed to reduce the inclination error and the like. Absorbs mounting errors.

According to a second aspect of the present invention, in the first aspect, the first rails (2a, 2b) and the second rails (3a, 3b) are combined in a grid pattern.

According to the present invention, the first rail (2a,
By combining 2b) and the second rails (3a, 3b) in a cross-girder shape, the seismic isolation target (F) can be guided stably. Further, by combining them in a cross-girder shape, the area of the face plate (6a, 6b) can be increased, and the area of the deformable member (9) can be further increased. Therefore, a deformable member (9) that can withstand a larger compressive force is obtained.

According to a third aspect of the present invention, in the first or second aspect, the deformable member (9) is an elastic body (9).
a) and a plate material (9b) harder than the elastic body (9a).
Are laminated, and the laminated elastic body is elastically deformed to absorb the mounting error. Here, rubber or the like can be used for the elastic body (9a), and an iron plate such as a steel plate can be used for the hard plate material (9b).

According to the present invention, since the deformable member (9) is made of a laminated elastic body in which the elastic body (9a) and the plate material (9b) harder than the elastic body (9a) are laminated, the rigidity is maintained to some extent. The thickness of the deformable member (9) can be increased.
By making the deformable member (9) thick, mounting errors such as tilt errors can be largely absorbed.

According to a fourth aspect of the present invention, in the third aspect, limiting means (11a, 11b, 12) for limiting displacement of the laminated elastic body in a pulling direction is provided. Here, the limiting means (11a, 11b, 12) include fixing plates (11a, 1a) fixed to the upper and lower ends of the laminated elastic body.
1b) and a limiting plate (12) fixed to one of the fixed plates (11a, 11b). When the laminated elastic body is displaced in the pull-out direction, the fixing plate (11a, 1
1b) is also displaced in the drawing direction. Fixed plates (11a, 11
When b) is displaced more than a certain amount in the drawing direction, the fixing plate (11)
a, 11b) is in contact with the limiting plate (12) to limit the displacement of the fixed plates (11a, 11b), thereby limiting the displacement of the laminated elastic body.

According to the present invention, even if a pulling force is applied to the laminated elastic body, the displacement in the drawing direction is limited, so that it is possible to prevent the laminated elastic body from being applied with a certain or more drawing force. For this reason, it is possible to prevent the adhesive surfaces at the upper and lower ends of the laminated elastic body from peeling off.

According to a fifth aspect of the present invention, in the seismic isolation guide (1) according to the third or fourth aspect, a plurality of the laminated elastic bodies are combined in a plane.

According to the present invention, by combining a plurality of laminated elastic bodies having a limited production area, a deformable member (9) capable of obtaining a large planar area and receiving a larger compressive force. Can be obtained.

According to a sixth aspect of the present invention, in the seismic isolation guide (1) according to the first or second aspect, the deformable member (9) includes the first rails (2a, 2b) and the guide blocks (4...). ) And the second rails (3a, 3b) are made of a soft metal having a rigidity lower than the rigidity of the guide device (5), and the soft metal is plastically deformed to absorb the mounting error. Features.

According to the present invention, since the deformable member (9) is made of a soft metal having a lower rigidity than the guide device (5),
At the time of mounting, the soft metal is plastically deformed before the guide device (5), and absorbs mounting errors. Further, after the soft metal is plastically deformed, no reaction force is applied to the guide device (5) from the soft metal, so that the guide device (5) is compared with a case where an installation error is absorbed by using an elastic body such as rubber. No excessive force remains.

According to a seventh aspect of the present invention, there is provided a first rail (22a, 22b) mounted on a predetermined foundation S, and a guide block (24 ...) sliding on the first rail (22a, 22b). The first rail (2) is attached to the seismic isolation target (F) and is attached to the guide block (24...).
2a, 22b) and a second rail (23a, 23b) sliding in a direction intersecting with the first rail (22a, 22b) and the second rail.
At least one of the rails (23a, 23b)
The first rails (22a, 22b), the guide blocks (24...), And the second rails (23a, 23b).
Is attached to the foundation (S) or the seismic isolation target (F) via a soft metal having a rigidity lower than the rigidity of the guide device (25) composed of: It is characterized in that it absorbs mounting errors that occur when mounting the seismic guide (21).

According to the present invention, since the seismic isolation guide (21) is attached to the foundation (S) or the seismic isolation target (F) via the soft metal having a lower rigidity than the guide device (25), First, the soft metal is plastically deformed to absorb the mounting error. In addition, by using a soft metal that can increase rigidity without increasing the area, a large compressive force can be applied to the soft metal without providing a face plate. Therefore, the rigidity of the soft metal and the rigidity of the guide device (25) are balanced, and the seismic isolation guide (21) as a whole can receive a high compressive force.

Here, when the guide block (24) is composed of two guide block bodies (24a, 24b),
A soft metal may be provided between the back surface of the first guide block body (24a) and the back surface of the second guide block body (24b). In this case, the rigidity of the soft metal depends on the rigidity of the linear guide device composed of the first rail (22a, 22b) and the first guide block body (24a), and the rigidity of the second rail (23a, 23b). ) And the second guide block main body (24b).

[0022]

FIG. 1 shows a seismic isolation guide 1 according to a first embodiment of the present invention. The seismic isolation guide 1 includes first rails 2a and 2b attached to a predetermined foundation side,
A guide block 4 sliding on the first rails 2a, 2b and a second rail 3a, 3b sliding on the guide block 4 in a direction intersecting the first rails 2a, 2b.
And a guide device 5 composed of: Seismic isolation guide 1
By mounting between the predetermined foundation and the seismic isolation target, the seismic isolation target is movably guided in one plane on the foundation. In addition, the seismic isolation guide 1 is provided between the ground foundation and the building when you want to guide the whole building, and when you want to guide some floors of the building, Partially provided between floors and the like.

As shown in FIGS. 2 and 3, the first rails 2a and 2b are composed of a pair of parallel linear rails. First
The guide blocks 4 are slidably mounted on the rails 2a, 2b, and the second
Are slidably mounted. Like the first rail, the second rails 3a and 3b also include a pair of straight rails, and are attached to the guide blocks 4 so as to be orthogonal to the longitudinal direction of the first rails 2a and 2b. First rails 2a and 2b composed of a pair of straight rails
And the second rails 3a and 3b composed of a pair of straight rails are combined in a cross-girder shape. The guide blocks 4 are arranged at four points at the intersections between the first rails 2a and 2b and the second rails 3a and 3b, which are combined in a grid pattern.

As described above, the guide device 5 can be stabilized by combining the first rails 2a and 2b and the second rails 3a and 3b in a cross-girder shape.

As shown in FIG.
In this example, a pair of guide block bodies 4a and 4b are orthogonally joined to each other in a back-to-back arrangement. The first rails 2a and 2b are sandwiched between the guide block main bodies 4a. Further, the second rails 3a and 3b are sandwiched between the guide block main bodies 4b. Balls 30 are provided on the side surfaces of the first rails 2a and 2b.
A continuous ball rolling groove 31 in which the balls roll is formed. On the sliding surface of the guide block main body 4a with the first rails 2a, 2b, there are load rolling grooves 32 facing the ball rolling grooves 31.
Is formed. The load rolling groove 32 and the ball rolling groove 31
Are arranged between the balls 30. In addition, a no-load return passage 33 is formed in the guide block main body 4a so as to infinitely circulate the balls 30 rolling in the load area. After rolling the balls 30 in the load region, the balls 30 are returned to the load rolling grooves again via the no-load return passage 33 and circulate. A continuous ball rolling groove 34 in which the ball rolls is also formed on the side surfaces of the second rails 3a and 3b. Also, the second rail 3 of the guide block body 4b
A load rolling groove 35 facing the ball rolling groove 34 is also formed on the sliding surface between a and 3b, and a no-load return passage 36 is formed to circulate the balls 30 infinitely.

In this embodiment, as shown in FIG. 4, a first rail having a sliding portion with the first rails 2a and 2b is provided.
Guide block body 4a and second rails 3a, 3b
Are connected to the second guide block main body 4b having a sliding portion with the guide blocks 4 in a back-to-back manner, but the first rails 2a, 2
A single guide block 4 having a sliding surface with the second rail 3a, 3b at the upper portion and a sliding surface with the second rail 3a, 3b at the upper portion may be used. Although the first rails 2a and 2b and the second rails 3a and 3b are linear rails, curved rails may be used.

As shown in FIG. 1, the first rails 2a, 2a
The lower face plate 6a is mounted on the lower surface of the second rail 3b via rail mounting plates 7a and 7b, and the upper face plate 6b is mounted on the upper surface of the second rails 3a and 3b via the rail mounting plates 8a and 8b.
Is attached. Each of the face plates 6a and 6b has a rectangular shape, and has a large area so that each of the pair of straight rails can be attached. An SS material or the like is used as a material of the face plates 6a and 6b. Rail mounting plates 7a, 7b, 8a, 8
b has a width slightly larger than the straight rail, and its length is substantially equal to the length of the straight rail. The straight rail is bolted to the rail mounting plates 7a, 7b, 8a, 8b. The rail mounting plates 7a, 7b, 8a, 8b are also bolted to the face plates 6a, 6b.

The laminated rubber 9 is mounted on the upper surface of the upper face plate 6b. As shown in FIG. 6, the laminated rubber 9 is formed by alternately stacking internal iron plates 9b such as a steel plate and rubber 9a, and has a substantially cylindrical shape. Bonding flanges 10a and 10b are bonded to both ends of the laminated rubber 9 in the vertical direction. The flange 10a is bolted to the upper surface of the upper face plate 6b, and the flange 10b is bolted to the seismic isolation target. In addition, the laminated rubber 9 is, as shown in FIG.
a. In this case, the upper flange 10a of the laminated rubber 9 is bolted to the lower face plate 6a, and the lower flange 10b is bolted to the foundation. Further, instead of the laminated rubber 9, a soft metal having a compression or pull-out rigidity smaller than that of the guide device 5 may be provided. Here, metals such as copper, aluminum, and zinc are used as the soft metal.

FIG. 6 shows the flange 1 on the upper end side of the laminated rubber 9.
0b is shown in a state joined to the seismic isolation target F. Even when the mounting surface F1 of the seismic isolation target F is inclined at an angle α with respect to the mounting surface S1 of the base S, and a tilt error occurs between the mounting surfaces, the laminated rubber 9 fixed to the upper surface of the face plate 6b.
Elastically deform so as to absorb the tilt error. Therefore, the guide device 5 can be attached between the foundation S and the seismic isolation target F.

Also, as shown in FIGS. 1 and 5, the first
Lower surfaces of the rails 2a and 2b, or the second rails 3a and 2b.
By providing the face plates 6a and 6b on the upper surface of 3b, the area of the laminated rubber 9 can be increased. Since the compressive force received per unit area of the laminated rubber 9 is constant, by increasing the area of the laminated rubber 9, the compressive force received by the entire laminated rubber 9 can be increased, and the rigidity of the laminated rubber 9 can be increased. can do. By increasing the rigidity of the laminated rubber 9, the rigidity of the laminated rubber 9 and the rigidity of the guide device 5 can be balanced, and the seismic isolation guide 1 having high rigidity as a whole can be obtained.

Further, by using the laminated rubber 9 in which an iron plate and a thin layer of rubber are laminated, even if the thickness of the laminated rubber 9 in the vertical direction is increased, the rigidity is maintained without buckling of the laminated rubber 9. Dripping. By increasing the thickness of the laminated rubber 9, the laminated rubber 9 is easily elastically deformed, and even when the inclination error of the mounting surface is large, the inclination error can be absorbed.

On the other hand, when a soft metal having a lower rigidity than the guide device 5 is used instead of the laminated rubber 9,
By providing a and 6b, the area of the soft metal can be increased. Therefore, the compressive force received by the soft metal can be increased, and the rigidity of the soft metal can be increased. The rigidity of the soft metal is set to a value that can withstand the compressive force applied from the normal seismic isolation target F, but plastically deforms against the load applied when the seismic isolation guide 1 is assembled. For this reason, at the time of attachment, the guide device 5
The soft metal is plastically deformed earlier than before, and the mounting error can be absorbed. Further, after the soft metal is plastically deformed, no reaction force is applied to the guide device 5 from the soft metal.
Unreasonable force is not left on the guide device 5 as compared with the case where the mounting error is absorbed by using an elastic body such as rubber.

FIGS. 7 and 8 show another example of the laminated rubber 9. As shown in FIG. 8, in this example, a plurality of laminated rubbers 9 are combined in a plane. Laminated rubber 9
Are bonded together so that the hexagonal flanges 10a are closely attached. A larger compressive force can be received by combining a plurality of laminated rubbers 9 having a limited production area in a planar manner.

As shown in FIG. 7, the flanges 10a, 1
At the upper and lower ends of Ob, rectangular laminated rubber fixing plates 11a and 11b are attached so as to sandwich the laminated rubber 9. Displacement limiting plates 12 are bolted to four side surfaces of the lower laminated rubber fixing plate 11a. The upper and lower portions of the displacement limiting plate 12 are bent in a direction perpendicular to the laminated rubber 9 side, and have a U-shaped cross section. Laminated rubber fixing plate 11a, 1
The edge of 1b is sandwiched between the displacement limiting plates 12. Between the upper surface of the upper laminated rubber fixing plate 11b and the displacement limiting plate 12,
A gap W is opened in the vertical direction. When the laminated rubber 9 is extended in the vertical direction by receiving the pulling force, the laminated rubber fixing plate 11b comes into contact with the displacement limiting plate 12 to limit the displacement by a certain amount or more. Even if a pull-out force is applied to the laminated rubber 9, the displacement in the up-down direction is limited, so that a predetermined or more pull-out force can be prevented from being applied to the laminated rubber 9. For this reason, the laminated rubber 9 adhered to the flanges 10a and 10b can be prevented from peeling off.

FIG. 9 shows a seismic isolation guide 21 according to a second embodiment of the present invention. Also in this embodiment, like the seismic isolation guide 1 in the first embodiment, the first rails 22a,
22b, guide blocks 24 sliding on the first rails 22a, 22b, and the first rails 22 attached to the seismic isolation target F and attached to the guide blocks 24.
a, the second rail 23 that slides in a direction intersecting with the second rail 23
a and 23b. First
Of the rails 22a, 22b are mounted on the foundation S via the soft metal 26 and the rail mounting plates 27a, 27b,
The second rail is made of a soft metal 26... And a rail mounting plate 2.
It is attached to the seismic isolation target F via 8a and 28b. The rigidity of the soft metal 26 in this embodiment is set to be larger than the rigidity of the soft metal in the first embodiment, but slightly smaller than the rigidity of the guide device 25.

The soft metal 26 is used for the first rail 22.
a, 22b and the second rails 23a, 23b. Also, the rail mounting plates 27a, 2
The soft metal 26... May be directly joined to the foundation or the seismic isolation target without going through the 7b, 28a, 28b. Further, the guide block 24 includes two guide block main bodies 24a,
In the case where the soft metal is formed, the soft metal may be provided between the back surface of the first guide block body 24a and the back surface of the second guide block body 24b.

According to the seismic isolation guide 21 of this embodiment, similarly to the seismic isolation guide 1 of the first embodiment,
At the time of mounting, the soft metals 26 are plastically deformed first, so that mounting errors can be absorbed. In addition, by using a soft metal that can increase the rigidity without increasing the area, a large compressive force can be applied to the soft metal without providing the face plates 6a and 6b. Therefore, even if the face plates 6a and 6b are not provided, the rigidity of the soft metal and the rigidity of the guide device 25 are balanced, and the entire seismic isolation guide 21 can receive a high compressive force.

[0038]

As described above, according to the present invention, the first rail mounted on the foundation, the guide block sliding on the first rail, and the guide rail intersecting the first rail are provided. In a seismic isolation guide including a second rail that slides on the guide block and is attached to a seismic isolation target, a face plate is attached to at least one of the first rail and the second rail. Since the deformable member is provided between the board and the base or the seismic isolation target, the deformation member absorbs a mounting error generated when the seismic isolation guide is mounted between the base and the seismic isolation target. Further, by providing the face plate, the area of the deformable member can be increased, and the compressive force applied to the deformable member can be increased.

[Brief description of the drawings]

FIG. 1 is a perspective view of a seismic isolation guide according to a first embodiment of the present invention.

FIG. 2 is a plan view showing the linear guide device of the first embodiment.

FIG. 3 is a side view showing the linear guide device of the first embodiment.

FIG. 4 is a perspective view showing a partial cross section of a guide block.

FIG. 5 is a perspective view showing an example in which the deformable member of the first embodiment is provided on a base side.

FIG. 6 is a side view showing a state in which a mounting error is absorbed by a deformable member.

FIG. 7 is a side view showing another example of the laminated rubber.

FIG. 8 is a sectional view taken along the line AA of FIG. 4;

FIG. 9 is a side view of a seismic isolation guide according to a second embodiment of the present invention.

[Explanation of symbols]

 S foundation F seismic isolation target 1,21 seismic isolation guide 2a, 2b, 22a, 22b first rail 3a, 3b, 23a, 23b second rail 4, ..., guide block 5, 25 guide device 6a, 6b Face plate 9 Laminated rubber (deformable member) 9a Elastic body 9b Plate 11a, 11b Fixed plate (restriction means) 12 Restriction plate (restriction means)

Claims (7)

[Claims] 1. A first rail mounted on a predetermined foundation, a guide block that slides on the first rail, and a seismic isolation device that slides on the guide block in a direction that intersects the first rail. In a seismic isolation guide including a second rail attached to an object, a face plate is attached to at least one of the first rail and the second rail, and the face plate and the base or the seismic isolation A seismic isolation guide, wherein a deformable member is provided between the object and the object to absorb a mounting error generated when the seismic isolation guide is mounted. 2. The seismic isolation guide according to claim 1, wherein the first rail and the second rail are combined in a grid. 3. The deformable member comprises a laminated elastic body in which an elastic body and a plate material harder than the elastic body are laminated,
The seismic isolation guide according to claim 1 or 2, wherein the laminated elastic body is elastically deformed to absorb the mounting error. 4. The seismic isolation guide according to claim 3, further comprising a restricting means for restricting a displacement of the laminated elastic body in a drawing direction. 5. The seismic isolation guide according to claim 3, wherein a plurality of the laminated elastic bodies are combined in a plane. 6. The deformable member is made of a soft metal having a rigidity lower than a rigidity of a guide device including the first rail, the guide block, and the second rail, and the soft metal is plastically deformed. The seismic isolation guide according to claim 1 or 2, wherein the mounting error is absorbed by absorbing the mounting error. 7. A first rail mounted on a predetermined foundation, a guide block sliding on the first rail, and mounted on an object to be seismically isolated and intersecting the first rail on the guide block. A seismic isolation guide comprising a second rail that slides in at least one direction, wherein at least one of the first rail and the second rail is connected to the first rail, the guide block, and the second rail. Attaching to the base or the seismic isolation target via a soft metal having a rigidity lower than the rigidity of the guide device composed of: a mounting error caused when the soft metal is plastically deformed and the seismic isolation guide is attached. A seismic isolation guide characterized by absorbing water.