JP2003287083A - Multi-stage laminated rubber bearing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a multi-stage laminated rubber bearing device which utilizes the space between multi-stage laminated rubber bearings parallelly arranged, and the complication of the device does not increase even if the distance between the multi-stage laminated rubber bearings becomes large. <P>SOLUTION: The multi-stage laminated rubber bearing device 12 consists of four multi-stage laminated bearings 14, and the multi-stage laminated bearings 14 consist of two laminated rubber bearings. A intermediate connection part 22 consists of a connection board 26 inserted and fixed between a lower flange 16C of an upper side laminated rubber bearing 16 and an upper flange 16B of a lower side laminated rubber bearing 16. A parallelism maintaining means 28 for practically parallelly maintaining the flanges 16B, 16C constituting the intermediate connection part 22 to the lower flange 16C of the lower side laminated rubber bearing 16 is provided between the connection board 26 and the lower side structure body 20. The parallelism maintaining means 28 is individually provided every four multi-stage laminated rubber bearings 14. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-stage laminated rubber bearing device, and more specifically, it stacks a plurality of laminated rubber bearings each having an upper flange at an upper end and a lower flange at a lower end in a height direction to form a lowermost laminated body. The lower flange of the rubber bearing is fixed to the lower structure, the upper flange of the uppermost laminated rubber bearing is fixed to the upper structure, and the lower flange of the upper laminated rubber bearing of the upper and lower adjacent rubber bearings One multi-stage laminated rubber bearing consisting of a plurality of laminated rubber bearings is formed by fixedly coupling the upper flange of the laminated rubber bearing on the side to each other to form an intermediate coupling portion, and a plurality of such laminated rubber bearings are arranged in parallel. The present invention relates to a multi-stage laminated rubber bearing device which is configured to support the vertical load due to the weight of the upper structure while suppressing the transmission of horizontal vibration from the lower structure to the upper structure.

[0002]

2. Description of the Related Art A laminated rubber bearing is one in which mounting flanges are provided on the upper and lower sides of laminated rubber formed by alternately stacking thin rubber plates and thin steel plates. , Has a sufficiently rigid property in the vertical direction. Laminated rubber bearings are widely used as a vibration damping structure and a vibration damping structure for mechanical devices, or as a seismic isolation structure for buildings and the like.

When two or more laminated rubber bearings are stacked in a height direction (staged) and used, the softness in the horizontal direction can be easily increased. Such multi-stage laminated rubber bearings have also been widely used from the past. However, compared to a single laminated rubber bearing, the overall shape of the multi-stage laminated rubber bearing is elongated in the height direction, so buckling due to vertical load and rubber rupture due to tensile axial force or bending moment It tends to occur. Therefore, when designing a multi-stage laminated rubber bearing, it is necessary to take measures to avoid these inconveniences.

One of the conventional measures is to use a horizontal connecting plate, which is shown in FIGS.
This will be described with reference to (D). As shown, a laminated rubber bearing 62 having an upper flange at the upper end and a lower flange at the lower end.
Stacked in multiple height directions, the bottom laminated rubber bearing 62
The lower flange is fixed to the lower structure 90, the upper flange of the laminated rubber bearing 62 of the uppermost stage is fixed to the upper structure 92,
Of the laminated rubber bearings 62 adjacent to each other in the vertical direction, the lower flange of the upper laminated rubber bearing 62 and the upper flange of the lower laminated rubber bearing 62 are fixedly connected to each other to form an intermediate connecting portion. One multi-stage laminated rubber bearing 64 is formed, which is composed of four laminated rubber bearings (in the example shown). By arranging a plurality of such multistage laminated rubber bearings 64 in parallel (only two of them are shown in the drawing), a multistage laminated rubber bearing device 66 is configured. 6 (A) and 6 (B) show a multi-stage laminated rubber bearing device 66 in which no measures are taken. FIG. 6 (A) shows a state in which horizontal deformation has not occurred, and FIG. 6 (B) shows This shows a state where horizontal deformation occurs. As is apparent from (B), when the device 66 is deformed in the horizontal direction, the flange forming the intermediate coupling portion is inclined from the horizontal due to the bending moment acting on the multi-stage laminated rubber bearing 64. . On the other hand, in the multi-stage laminated rubber bearing 64 shown in FIGS. 6C and 6D, the lower flange of the upper laminated rubber bearing 62 and the upper flange of the lower laminated rubber bearing 62 that form the intermediate connecting portion. A connecting plate 6 made of a steel plate or the like extending horizontally between
8 are fixed, and the horizontal connecting plates 68 connect the intermediate connecting portions of the multi-stage laminated rubber bearings 64 arranged in parallel. It should be noted that (C) shows a state in which no horizontal deformation has occurred, and (D) shows a state in which horizontal deformation has occurred. When the horizontal connecting plate (steel plate) 68 is provided, the flange that constitutes the intermediate connecting portion is the lower flange of the lowermost laminated rubber bearing 62 or the uppermost laminated rubber bearing 62 due to the bending rigidity of the steel plate. Maintained substantially parallel (and thus substantially horizontal) to the upper flange. The force that keeps the flange that constitutes the intermediate connecting portion horizontal is the multi-stage laminated rubber bearing 64.
Since it acts as a resistance force against the bending moment that acts on, the effect of avoiding buckling due to the influence of vertical load and preventing the rubber from breaking due to the tensile axial force and the bending moment can be obtained.

Therefore, as shown in FIGS. 6A and 6B, the multistage laminated rubber bearing device 66 without the horizontal connecting plate 68 is provided.
And a multi-stage laminated rubber bearing device 66 including a horizontal connecting plate 68 as shown in FIGS. 6C and 6D,
It looks like this: That is, in the n-stage laminated rubber bearing device 66 in which n laminated rubber bearings 62 are stacked, the horizontal connecting plate 68
When the rigidity of each of the rubber bearings is sufficiently large and can be regarded as infinite, the maximum bending moment generated in each laminated rubber bearing 62 can be reduced to 1 / n or less by equipping the horizontal connecting plate 68. Each multi-stage laminated rubber bearing 6
The buckling load that No. 4 can withstand can be increased by a factor of n ² .

[0006]

However, the multi-stage laminated rubber bearing device 66 equipped with the horizontal connecting plate 68 has the following drawbacks. The space between the multi-stage laminated rubber bearings 64 arranged side by side is closed by the horizontal connecting plate 68, and the space cannot be used at all. Distance (span) between the multi-stage laminated rubber bearings 64 installed in parallel
Becomes larger, the steel plate becomes thicker and larger in order to secure the bending rigidity of the horizontal connecting plate (steel plate) 68, the device becomes complicated, and it becomes unsuitable for practical use, and it cannot be applied to a normal seismic isolated building. . The present invention has been devised in view of the above circumstances, and an object of the present invention is to make effective use of the space between the multi-stage laminated rubber bearings that are arranged in parallel, and the space between the multi-stage laminated rubber bearings. An object of the present invention is to provide a multi-stage laminated rubber bearing device that does not increase the complexity of the device even if the distance (span) increases.

[0007]

In order to achieve the above-mentioned object, the present invention is directed to stacking a plurality of laminated rubber bearings each having an upper flange at an upper end and a lower flange at a lower end in a height direction to form a lowermost laminated rubber bearing. The lower flange is fixed to the lower structure, the upper flange of the uppermost laminated rubber bearing is fixed to the upper structure, and the lower flange of the upper laminated rubber bearing and the lower laminated rubber bearing of the upper and lower adjacent laminated rubber bearings are fixed. Forming one multi-layered rubber bearing consisting of a plurality of laminated rubber bearings by fixedly connecting the upper flange of the rubber bearing to each other to form an intermediate connecting portion, and arranging a plurality of such multi-layered rubber bearings in parallel In the multi-stage laminated rubber bearing device configured to support the vertical load due to the weight of the upper structure while suppressing the transmission of the horizontal vibration from the lower structure to the upper structure, the intermediate connecting portion is formed. For maintaining the lower flange of the laminated rubber bearing and the upper flange of the lower laminated rubber bearing substantially parallel to the lower flange of the lowermost laminated rubber bearing or the upper flange of the uppermost laminated rubber bearing. The parallelism maintaining means is provided individually on each of the multi-stage laminated rubber bearings.

According to the present invention, the flanges of the upper and lower laminated rubber bearings, which form the intermediate connecting portion of the multi-layered rubber bearings, are arranged at the bottom of the multi-layered rubber bearings by the parallel maintaining means individually provided on each of the multi-layered rubber bearings. It is maintained substantially parallel to the lower flange of the laminated rubber bearing or the upper flange of the uppermost laminated rubber bearing. Therefore, it is possible to effectively use the space between the multi-stage laminated rubber bearings arranged side by side, and even if the distance (span) between the multi-stage laminated rubber bearings is increased due to an increase in the size of the device, the device becomes complicated. Without increasing
This is advantageous in layout of various parts and members.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of a multi-stage laminated rubber bearing device, FIG. 2 is a front view thereof, FIGS. 3 (A) to 3 (C) are explanatory views of a pantograph mechanism, and FIG. 4 is an explanation showing a specific example of installation of the multi-stage laminated rubber bearing. 5 and 5 (A) to 5 (F) are explanatory views of the movement of the parallel maintaining means. The multi-stage laminated rubber bearing device 12 according to the embodiment includes four multi-stage laminated rubber bearings 14, and the multi-stage laminated rubber bearing device 12 suppresses transmission of horizontal vibration from the lower structure 20 to the upper structure 18. In addition, it is configured to support a vertical load due to the weight of the upper structure 18. The multi-stage laminated rubber bearing 14
Is formed by stacking two laminated rubber bearings 16 in the height direction. The laminated rubber bearing 16 includes a laminated rubber 16A and upper and lower flanges 16B and 16C provided above and below the laminated rubber 16A.

The upper flange 16B of the laminated rubber bearing 16 arranged on the upper side is fixed to the upper structure 18, and the lower flange 16C of the laminated rubber bearing 16 arranged on the lower side is fixed to the lower structure 20. Further, the lower flange 16C of the laminated rubber bearing 16 arranged on the upper side and the upper flange 16B of the laminated rubber bearing 16 arranged on the lower side are connected and fixed, thereby forming an intermediate connecting portion 22. In the present embodiment, these lower flange 16C and upper flange 1
The connecting plate 26 is sandwiched between and fixed to 6B, and the lower flange 16C, the upper flange 16B, and the connecting plate 26 form an intermediate connecting portion 22. Then, the lower flange 16 of the upper laminated rubber bearing 16 which constitutes the intermediate connecting portion 22.
C and the upper flange 16B of the lower laminated rubber bearing 16
The parallel maintaining means 28 for maintaining substantially parallel to the lower flange 16C of the lower laminated rubber bearing 16 is provided for each of the four multi-stage laminated rubber bearings 14.

The parallel maintaining means 28 are provided between the upper flange 16B of the lower laminated rubber bearing 16 and the lower structure 20, and the parallel maintaining means 28 are arranged outside the multistage laminated rubber bearing 14. The pantograph mechanism 30 with the first slide mechanism and the second pantograph mechanism 40 with the slide mechanism are provided. The first slide mechanism-equipped pantograph mechanism 30 includes a first pantograph mechanism 32 and a first slide mechanism 34, and the second slide-mechanism pantograph mechanism 40 includes a second pantograph mechanism 42 and a second pantograph mechanism 42. The slide mechanism 44 of FIG.

The first pantograph mechanism 32 is provided on a vertical plane passing through the X direction out of the X direction and the Y direction orthogonal to each other in the horizontal plane, and the second pantograph mechanism 42.
Are provided on a vertical plane that passes through the Y direction of the X and Y directions that are orthogonal to each other in the horizontal plane. As shown in FIG. 3, the first and second pantograph mechanisms 32 and 42 include two upper links U that are parallel to each other, two lower links D that are parallel to each other, and these two upper links U. And an intermediate link M that rotatably connects the lower link D and the lower link D,
The upper end of the upper link U is pivotally supported by the connecting plate 26. Further, the lower end of the lower link D of the first pantograph mechanism 32 is pivotally supported by the slider S2 forming the first slide mechanism 34, and the lower end of the lower link D of the second pantograph mechanism 42 is the second slide. Slider S that constitutes mechanism 44
It is pivotally supported by 2.

The first slide mechanism 34 and the second slide mechanism 44 are provided in the lower structure 20. The first slide mechanism 34 includes two lower rails R that are fixed to the lower structure 20 at intervals in the X direction and extend in the Y direction in parallel with each other, and the two lower rails R that extend in the X direction. The lower rail R includes a slider S1 slidably coupled to the lower rail R, and the slider S2 slidably coupled to the slider S1 along the slider S1. The second slide mechanism 44 is fixed to the lower structure 20 at intervals in the Y direction and extends in the X direction in parallel with each other.
Lower rail R, a slider S1 extending in the Y direction and slidably coupled to the two lower rails R, and the slider slidably coupled to the slider S1 along the slider S1. S2 and.

Next, the operation will be described. First, for example, as shown in FIG. 5 (A), the movement of the parallel maintaining means 28 when the intermediate connecting portion 22 is displaced relative to the lower structure 20 obliquely leftward and upward as shown by an arrow will be described. To do. (Motion of Pantograph Mechanism 30 with First Sliding Mechanism in X Direction) The upper end of the first pantograph mechanism 32 follows the intermediate connecting portion 22 in the X direction and moves integrally with the intermediate connecting portion 22. The slider S2 slides on the slider S1, and the slider S2 is located at the end of the slider S1 near the −X direction. Then, the first pantograph mechanism 3
Since the lower end of No. 2 is pivotally supported by the slider S2, the lower end of the first pantograph mechanism 32, like its upper end, is
Follow the intermediate connecting portion 22 in the direction
It will move together with. (Movement of Pantograph Mechanism 30 with First Sliding Mechanism in Y Direction) The upper end of the first pantograph mechanism 32 follows the intermediate connecting portion 22 in the Y direction and moves integrally with the intermediate connecting portion 22. The slider S1 of the first slide mechanism 34 slides on the lower rail R, and the slider S1 is located at the end of the lower rail R toward the Y direction. Since the slider S2 is coupled to the slider S1 and the lower end of the first pantograph mechanism 32 is pivotally supported by the slider S2, the lower end of the first pantograph mechanism 32 is similar to its upper end in the Y direction. It follows the intermediate connecting portion 22 and moves integrally with the intermediate connecting portion 22.

(Movement of Pantograph Mechanism 40 with Second Sliding Mechanism in X Direction) The upper end of the second pantograph mechanism 42 follows the intermediate connecting portion 22 in the X direction and moves integrally with the intermediate connecting portion 22. . The slider S1 of the second slide mechanism 44 slides on the lower rail R, and the slider S1 is located at the end of the lower rail R toward the −X direction. Then, the slider S2 is coupled to the slider S1, and the lower end of the second pantograph mechanism 42 is attached to the slider S2.
Therefore, the lower end of the second pantograph mechanism 42 moves integrally with the intermediate connecting portion 22 following the intermediate connecting portion 22 in the X direction, similarly to the upper end thereof. (Movement of Second Pantograph Mechanism with Slide Mechanism 40 in Y Direction) The upper end of the second pantograph mechanism 30 follows the intermediate connecting portion 22 in the Y direction and moves integrally with the intermediate connecting portion 22. The slider S2 slides on the slider S1, and the slider S2 is located at the end of the slider S1 near the Y direction. Then, the first pantograph mechanism 32
Since the lower end of the first pantograph mechanism 32 is pivotally supported by the slider S2, the lower end of the first pantograph mechanism 32 follows the intermediate connecting portion 22 and moves integrally with the intermediate connecting portion 22 in the Y direction, like the upper end thereof. It will be.

That is, the intermediate connecting portion 22 is the lower structure 2.
When it is displaced obliquely upward to the left as indicated by the arrow relative to 0, the movement of the intermediate connecting portion 22 is followed, and the first and second
The pantograph mechanisms 32 and 34 of FIG. 6 move integrally with the intermediate connecting portion 22, and the intermediate connecting portion 22 is always maintained in parallel with the lower structure 20. Similarly, for example, as shown in FIGS. 5B to 5F, when the intermediate connecting portion 22 is displaced relative to the lower structure 20 as indicated by an arrow, the movement of the intermediate connecting portion 22 is followed. Then, the first and second pantograph mechanisms 32, 34 move integrally with the intermediate connecting portion 22, and the intermediate connecting portion 22 is always maintained in parallel with the lower structure 20. Therefore, the upper structure 18 moves horizontally with respect to the lower structure 20 due to an earthquake or the like, and along with that, the upper and lower laminated rubber bearings 16 are sheared and deformed in the horizontal direction, and the intermediate connecting portion 22 is lower. When horizontally displaced with respect to the structure 20, the first and second pantograph mechanisms 32, 34
Is displaced in the horizontal direction with respect to the lower structure 20 integrally with the intermediate connecting portion 22. At that time, the upper and lower laminated rubber bearings 16 undergo a slight bending deformation due to the shearing deformation in the horizontal direction, so that the intermediate connecting portion 22 tends to slightly tilt. Here, for example, the intermediate connecting portion 2
2 intends to generate an inclination as indicated by arrows M1 and M2 in FIG. In this case, thereby, the compressive force and the tensile force as shown by the arrows F1 to F4 are generated in the upper link U and the lower link D of the first and second pantograph mechanisms 32 and 34. Then, those forces act on the vertical and horizontal loads acting from the upper structure 18 or the lower structure 20 to the pivot points of the upper link U and the lower link D, which are indicated by arrows V1 to V4 and H1 to H4 in the figure. Therefore, the inclination of the intermediate connecting portion 22 is substantially prevented in order to counteract. As a result, the lower flange 16C of the upper laminated rubber bearing 16 and the upper flange 16B of the lower laminated rubber bearing 16 forming the intermediate coupling portion 22 are connected to the lower structure 20.
And substantially parallel to the lower flange 16C of the laminated rubber bearing 16 on the lower side and the upper flange 16B of the laminated rubber bearing 16 on the upper side.

FIG. 4 is an explanatory view for explaining the present invention more specifically. A multi-stage laminated rubber bearing device 12 is provided between the lower structure 20 and the upper structure 18, and the multi-stage laminated rubber bearing device 12 is composed of a plurality of multi-stage laminated rubber bearings 14. Two laminated rubber bearings are stacked in the height direction. The upper flange of the laminated rubber bearing arranged on the upper side is the upper structure 1
The lower flange of the laminated rubber bearing fixed to No. 8 and arranged on the lower side is the base plate 20B of the bottom wall of the recess 20A of the lower structure 20.
It is fixed on.

Further, the lower flange of the laminated rubber bearing arranged on the upper side and the upper flange of the laminated rubber bearing arranged on the lower side are fixed by sandwiching the connecting plate 26, whereby the intermediate connecting portion 22 is constituted. ing. The lower flange of the upper laminated rubber bearing and the upper flange of the lower laminated rubber bearing that form the intermediate coupling portion 22 are maintained substantially parallel to the lower flange of the lower laminated rubber bearing. A parallel maintaining means 28 is provided for each of the four multi-stage laminated rubber bearings 14. Similar to the above, each of the parallel maintaining means 28 is provided between the connecting plate 26 and the substrate 20B of the lower structure 20, and each of the parallel maintaining means 28 includes the first slide mechanism-equipped pantograph mechanism 30 and the second parallel mechanism. And a pantograph mechanism 40 with a slide mechanism. A damper 50 for damping vibration is arranged between the lower structure 20 and the upper structure 18, and a flexible joint portion 52 such as equipment piping is arranged.

According to the present embodiment, each of the four multi-stage laminated rubber bearings 14 constituting the multi-stage laminated rubber bearing device 12 is provided with the parallel maintaining means 28 individually, and each multi-stage laminated rubber bearing 14 is provided. The lower flange 16C of the upper laminated rubber bearing 16 and the upper flange 16B of the lower laminated rubber bearing 16 constituting the intermediate coupling portion 22 of the lower laminated rubber bearing 16 are Flange 1
It is designed to be maintained substantially parallel to 6C. Further, by providing the parallel maintaining means 28, the maximum bending moment generated in each laminated rubber bearing 16 is reduced to 1/2 or less as compared with the case where it is not provided, and each multi-stage laminated rubber is also provided. The buckling load that the bearing 14 can bear is increased four times. Further, more generally, in the n-stage laminated rubber bearing device 12, by equipping the parallel maintaining means 28 as shown in the drawing, the maximum bending moment generated in each laminated rubber bearing 16 is reduced to 1 / n or less. Moreover, the buckling load that each multi-stage laminated rubber bearing 14 can withstand can be increased by n ² times. Further, since the parallel maintaining means 28 is individually provided for each multi-stage laminated rubber bearing 14, the space between the multi-stage laminated rubber bearings 14 arranged in parallel is, for example, flexible as described above, such as the damper 50 or the equipment pipe. It can be effectively used as a space for disposing the joint portion 52, which is advantageous in the layout of various parts and members. Further, the configuration of the parallel maintaining means 28 is the same as the first and second two.
With a simple structure consisting of two pantograph mechanisms 30 and 40 with slide mechanism, there is no problem that the device becomes complicated even if the device becomes large and the distance (span) between the multi-stage laminated rubber bearings becomes large, and it is practical. The above is also preferable, and it can be easily applied to a normal seismic isolated building.

In this embodiment, of the two laminated rubber bearings 16 stacked vertically, the laminated rubber bearing 16 arranged on the lower side is provided with the parallel maintaining means 28, but the upper side is explained. Laminated rubber bearing 16 arranged in
The parallel maintaining means 28 may be provided in the above, or the parallel maintaining means 28 may be provided in both of the two laminated rubber bearings 16. Further, although the case where the parallel maintaining means 28 is provided between the connecting plate 26 and the lower structure 20 has been described in the present embodiment, the parallel maintaining means 28 includes the upper and lower flanges 16B and 16C of the laminated rubber bearing 16. You may make it provide directly between them. Further, in the present embodiment, the case where the multi-stage laminated rubber bearing 14 is composed of two laminated rubber bearings 16 has been described, but the present invention is also applicable to the multi-stage laminated rubber bearing 14 including three or more laminated rubber bearings 16. Of course applies.
In the case of the multi-stage laminated rubber bearing 14 in which n laminated rubber bearings 16 are stacked, n-1 laminated rubber bearings 16
Between the upper and lower flanges 16B and 16C for maintaining parallelism 28
Should be provided. In this case, the upper and lower flanges 16B, 1
The connecting plate 26 may be provided in 6C, and the parallel maintaining means 28 may be provided between these connecting plates 26. In the case of the multi-stage laminated rubber bearing 14 in which n laminated rubber bearings 16 are stacked,
The parallel maintaining means 28 may be provided between each of the n−1 intermediate connecting portions 22 and the lower structure 20 or the upper structure 18. In this case, each parallel maintaining means 28
The upper part of the upper and lower flanges 16 that constitute the intermediate connecting portion 22.
B, 16C and the connecting plate 26 will be connected.

Further, the lower flange 16C of the upper laminated rubber bearing 16 and the upper flange 16B of the lower laminated rubber bearing 16 constituting the intermediate connecting portion 22 are replaced by the lower flange 16C of the lowermost laminated rubber bearing 16 or As the parallel maintaining means 28 for maintaining the uppermost laminated rubber bearing 16 substantially parallel to the upper flange 16B, various conventionally known mechanisms can be used, and the structure of the embodiment, that is, the first slide. Although not limited to the mechanism-equipped pantograph mechanism 30 and the second slide-mechanism pantograph mechanism 40, the parallelism maintaining means 28 is not limited to the first slide-mechanism pantograph mechanism 30 and the second slide-mechanism pantograph mechanism 4.
When 0, it is advantageous in simplifying and compacting the configuration of the parallel maintaining means 28.

[0022]

As is apparent from the above description, according to the present invention, the space between the multi-stage laminated rubber bearings can be effectively used between the lower structure and the upper structure, and the apparatus is complicated. A multi-stage laminated rubber bearing device is obtained which can avoid the deformation and can be softly and largely deformed in the horizontal direction and can sufficiently exhibit the characteristics sufficiently rigid in the vertical direction.

[Brief description of drawings]

FIG. 1 is a plan view of a multi-stage laminated rubber bearing device.

FIG. 2 is a front view of a multi-stage laminated rubber bearing device.

3A to 3C are explanatory views of a pantograph mechanism.

FIG. 4 is an explanatory diagram showing a specific example of installation of a multi-layer laminated rubber bearing.

5A to 5F are explanatory views of the movement of the parallelism maintaining unit.

6A to 6D are explanatory views of a conventional multi-stage laminated rubber bearing device.

[Explanation of symbols]

12 Multi-stage laminated rubber bearing device 14 Multi-stage laminated rubber bearing 16 laminated rubber bearing 18 Upper structure 20 Lower structure 28 Parallel maintenance means 30 Pantograph mechanism with first slide mechanism 32 First Pantograph Mechanism 34 First slide mechanism 40 Pantograph mechanism with second slide mechanism 42 Second pantograph mechanism 44 Second slide mechanism

Claims (7)

[Claims] 1. A laminated rubber bearing having an upper flange at the upper end and a lower flange at the lower end is stacked in a plurality of height directions, and the lower flange of the laminated rubber bearing at the lowermost stage is fixed to a lower structure, and the uppermost laminated body is laminated. The upper flange of the rubber bearing is fixed to the upper structure, and the lower flange of the upper laminated rubber bearing and the upper flange of the lower laminated rubber bearing of the vertically adjacent laminated rubber bearings are fixedly connected to each other for intermediate connection. A multi-layered rubber bearing consisting of a plurality of laminated rubber bearings is formed by forming the parts, and by arranging a plurality of such multi-layered rubber bearings in parallel, horizontal vibration from the lower structure to the upper structure can be prevented. In a multi-stage laminated rubber bearing device configured to support a vertical load due to the weight of an upper structure while suppressing transmission, a lower flange of an upper laminated rubber bearing and a lower laminated rubber constituting the intermediate connecting portion. Each of the multi-stage laminated rubber bearings is provided with parallel maintaining means for maintaining the upper flange of the bearing substantially parallel to the lower flange of the lowermost laminated rubber bearing or the upper flange of the uppermost laminated rubber bearing. A multi-stage laminated rubber bearing device characterized by being individually provided. 2. The multistage laminated rubber bearing is constructed by stacking n laminated rubber bearings, and the parallel maintaining means is provided between the upper flange and the lower flange of each of the n−1 laminated rubber bearings. The multistage laminated rubber bearing device according to claim 1, wherein the multistage laminated rubber bearing device is provided. 3. A connecting plate is provided between an upper flange and a lower flange forming each of the intermediate connecting portions, and the parallel maintaining means is provided via these connecting plates. Item 1. The multi-stage laminated rubber bearing device according to Item 1. 4. The connecting plate is provided on the upper flange of the lowermost laminated rubber bearing, and the parallel maintaining means is provided between the connecting plate and the lower structure. Multi-stage laminated rubber bearing device. 5. The multistage laminated rubber bearing is constructed by stacking n laminated rubber bearings, and the parallel maintaining means is provided between each of the n-1 intermediate connecting portions and a lower structure or an upper structure. The multi-stage laminated rubber bearing device according to claim 1, wherein the multi-stage laminated rubber bearing device is provided in each of the above. 6. The first parallel pantograph mechanism, which comprises a first pantograph mechanism with a slide mechanism and a second pantograph mechanism with a slide mechanism, wherein the parallel maintaining means comprises a pantograph mechanism with a second slide mechanism. Is provided on a vertical plane that passes through an X direction out of the X direction and the Y direction that are orthogonal to each other in a horizontal plane, and the first slide mechanism constituting the pantograph mechanism with the first slide mechanism is the lower flange or the upper flange. One of the flanges and the first
And the pantograph mechanism of the X-direction and Y-axis in the horizontal plane.
A second pantograph mechanism with a second slide mechanism configured to be movably coupled in both directions.
The pantograph mechanism of is provided on a vertical plane that passes through the Y direction of the X and Y directions that are orthogonal to each other in the horizontal plane,
A second slide mechanism constituting a second pantograph mechanism with a slide mechanism moves one of the lower flange or the upper flange and the second pantograph mechanism in the horizontal plane in both the X and Y directions. The multi-stage laminated rubber bearing device according to claim 1, wherein the multi-stage laminated rubber bearing device is configured to be coupled to each other as much as possible. 7. A parallel maintaining means, wherein connecting plates are respectively provided between an upper flange and a lower flange constituting the respective intermediate connecting portions, and provided between the connecting plate and the lower flange of the lowermost laminated rubber bearing. Then, the upper ends of the first and second pantograph mechanisms are coupled to the connecting plate, and the first slide mechanism connects the lower structure and the lower end of the first pantograph mechanism to each other in the X plane in the horizontal plane. And a lower end of the second pantograph mechanism in the horizontal plane, the second slide mechanism is configured to be movably coupled to each other in the X-direction and the Y-direction. In parallel maintaining means provided between the upper and lower connecting plates of the intermediate connecting portion of the remaining laminated rubber bearing, the upper ends of the first and second pantograph mechanisms are Upper The first slide mechanism is coupled to the connecting plate and the lower connecting plate and the lower end of the first pantograph mechanism are movably connected to each other in the X-direction and the Y-direction in the horizontal plane. The second slide mechanism is configured to couple the lower connecting plate and the lower end of the second pantograph mechanism so as to be movable in the X direction and the Y direction in the horizontal plane. The multi-stage laminated rubber bearing device according to claim 6, which is configured.