JP2010230057A - Base isolation device having damping device and base isolation structure with damping device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a base isolation device having a damping device capable of exhibiting a stable structure supporting function by a rigid ball and a stable damping function by an elastic ball during an input of vibration. <P>SOLUTION: The base isolation device 1 having the damping device incluldes a combination of: a base isolating rigid ball support 10 having a lower plate body 11 with a conical face 12a as the upper face on the vibration input side and having a circular guard at the outer peripheral part of the conical face 12a, an upper plate body 21 having a conical face 22a with an angle different from the conical face of the lower plate body 11 as the lower face at a base isolating object side and having a circular guard at the outer peripheral part of the conical face 22a, and the rigid ball 27 disposed at the center of both conical faces 12a, 22a; and a damping elastic ball support 30 having a lower plate body 11 with a conical face 12a as the upper face at the vibration input side, an upper plate body 22 with a conical face 22a as the lower face at the damping object side, and the elastic ball 29 disposed at the center of both conical faces 12a, 22a, having a diameter larger than that of the rigid ball 27, and generating rolling frictional resistance. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention is equipped with a vibration control device capable of exhibiting a stable and excellent damping function with a simple structure, and also has a stable structure support function, automatic home position return function, stable seismic isolation function with a simple structure. The present invention relates to a seismic isolation device capable of exhibiting its functions and a seismic isolation structure equipped with each of these devices.

Conventionally, various seismic isolation and vibration control devices have been proposed and put into practical use in order to suppress vibrations of houses and the like when an earthquake occurs.
Most of the seismic isolation devices employ a restoring mechanism using a coil spring so as to obtain an origin return force after the end of the earthquake. In this case, the natural frequency changes due to a change in the elastic force of the coil spring, and the seismic isolation performance is adversely affected.
In addition, an oil damper using the viscosity of oil as a fluid is often used as a vibration damping device, but in this case, there is a problem of oil deterioration or oil leakage. In addition, the sliding friction damper has a very complicated mechanism when the support moves horizontally up and down, and it is difficult to stabilize the friction coefficient and damping force.

  In Patent Document 1, a pair of rotating bodies each having a damping function and functioning as a rolling seismic isolation bearing and a pair of rotating bodies that are movable relative to each other and sandwich the rotating bodies in a compressed and deformed state. And a laminated rubber having a restoring force to return the moving member to a position before the relative movement after the moving member is relatively moved. There has been proposed a seismic isolation device including a restoring mechanism, and having a predetermined interval between at least one of the pair of moving members and the restoring mechanism.

  In the case of the seismic isolation device of this Patent Document 1, since a pair of rotating bodies composed of rubber spheres functioning as rolling isolation bearings are arranged between a pair of moving members, they are also attenuated by a change in elastic force of the rotating body. The function is adversely affected.

JP 2008-144860 A

  The problem to be solved by the present invention is that there is no device that can provide a stable support function of a structure, an automatic home position return function, a stable seismic isolation function and a vibration control function, though it has a simple structure. is there.

  The seismic isolation device including the vibration damping device according to the present invention includes a lower plate body disposed on the vibration input side, an upper plate body disposed on the seismic isolation object side, and between the lower plate body and the upper plate body. A seismic isolation hard ball bearing having a hard sphere that rolls due to vibration, a lower pan body disposed on a vibration input side, an upper pan body disposed on a vibration control object side, and the lower pan body An elastic body ball bearing for vibration control having an elastic body ball that is arranged between the upper plate bodies and has a diameter larger than that of the seismic isolation hard ball and generates rolling frictional resistance by vibration. The most important feature.

  According to the first aspect of the present invention, a stable structure supporting function by the hard sphere of the rigid sphere support and a stable vibration damping function by the elastic sphere of the elastic sphere support are exhibited at the time of vibration input even though the structure is simple. It is possible to realize and provide a seismic isolation device equipped with a vibration damping device capable of performing the above.

  According to the second aspect of the present invention, although having a simple structure, a stable support function of the structure by the rigid sphere of the rigid sphere support at the time of vibration input, an automatic origin return function by the inclination of the conical surface, a rigid sphere by the circular guard portion It is possible to realize and provide a seismic isolation device equipped with a vibration damping device capable of exhibiting a pop-out prevention function and a stable vibration damping function by the elastic ball of the elastic ball support.

  According to the third aspect of the present invention, although the structure is simple, the structure has a stable support function by the rigid sphere of the rigid sphere support at the time of vibration input, and the conical surface with different angles of the lower dish and the upper dish. Automatic origin return function by tilting, hard ball pop-out prevention function by circular guard, elastic body with elastic ball placed between one of the lower plate and upper plate as a flat surface and the other as a conical surface It is possible to realize and provide a seismic isolation device including a vibration damping device that can exhibit a stable vibration damping function by ball bearings.

  According to the fourth aspect of the present invention, although the structure is simple, a stable support function of the structure by the rigid spheres of the rigid sphere support at the time of vibration input and the conical surface with different angles of the lower and upper dish bodies are provided. Automatic home position return function by tilting, prevention function of the rigid sphere by the circular guard, one of the lower and upper plate bodies is the flat surface, and the other is the sum of the angles of the two conical surfaces of the rigid sphere support. It is possible to realize and provide a seismic isolation device including a vibration damping device that has a conical surface and can exhibit a stable vibration damping function by an elastic ball bearing in which an elastic ball is disposed.

  According to the invention described in claim 5, the plurality of rigid ball bearings and the plurality of elastic ball bearings constituting the seismic isolation device including the vibration damping device according to claim 1 are arranged between the structure foundation and the structure body. It is possible to stably support the structure body based on the configuration of the separated structure, without providing coil springs, dampers, etc., and by preventing the creep of the elastic sphere itself and by the stable frictional resistance force due to earthquake etc. It is possible to realize and provide a seismic isolation device including a vibration damping device that can absorb vibration and exhibit an excellent vibration damping function.

  According to the invention described in claim 6, a plurality of rigid ball bearings and a plurality of elastic ball bearings constituting the seismic isolation device including the vibration damping device according to claim 2 are provided between the structure foundation and the structure body. The structure body is separated, and the structure body can be stabilized and the automatic origin return of the structure body after the end of vibration due to an earthquake or the like can be performed reliably, and the elastic ball can be used without providing a coil spring, damper, etc. It is possible to realize and provide a seismic isolation structure with a vibration damping device that can absorb vibration due to an earthquake or the like by a stable frictional resistance force while suppressing its own creep, and exhibiting an excellent vibration damping function.

  According to the invention described in claim 7, the plurality of rigid ball bearings and the plurality of elastic ball bearings constituting the seismic isolation device including the vibration damping device according to claim 3 are arranged between the structure base and the structure main body. As in the case of the invention according to claim 6, the structure body can be stabilized and the automatic origin return of the structure body after the end of vibration due to an earthquake or the like can be reliably performed, Seismic isolation structure with a damping device that can absorb vibrations due to earthquakes and the like with a stable frictional resistance while preventing creep of the elastic sphere itself without providing a coil spring, damper, etc. Can be realized and provided.

  According to the invention described in claim 8, the plurality of rigid ball bearings and the plurality of elastic ball bearings constituting the seismic isolation structure with the vibration damping device according to claim 4 are arranged between the structure foundation and the structure body. As in the case of the invention according to claim 6, the structure body can be stabilized and the automatic origin return of the structure body after the end of vibration due to an earthquake or the like can be reliably performed based on the separately arranged structure, and the coil spring A seismic isolation structure with a damping device that can absorb vibrations due to earthquakes and the like with a stable frictional resistance while preventing creep of the elastic sphere itself without providing a damper, etc., and exhibiting an excellent damping function Can be realized and provided.

(A) Schematic diagram showing a cross section of a seismic isolation rigid ball bearing and a damping elastic ball bearing in a seismic isolation device equipped with a damping device according to an embodiment of the present invention; (b) in an embodiment of the present invention; It is the schematic which shows the cross section of the elastic body ball | bowl support for damping | damping in the seismic isolation apparatus provided with the said damping device. It is a schematic plan view of the upper plate body of the seismic isolation hard ball support in the seismic isolation device including the vibration damping device according to the example. It is a schematic explanatory drawing which cuts and shows a part of the upper plate body of the seismic isolation rigid ball support in the seismic isolation device provided with the vibration damping device according to the embodiment. It is a schematic plan view of the lower plate body of the seismic isolation hard ball support in the seismic isolation device including the vibration control device according to the example. It is a schematic explanatory drawing which cuts and shows a part of lower plate body of a seismic isolation hard ball support in a seismic isolation device provided with a vibration damping device concerning an example. It is a schematic explanatory drawing which shows a part of the vibration displacement state of the seismic isolation rigid ball support in the seismic isolation device including the vibration control device according to the embodiment. It is the schematic which shows the cross section of the elastic body ball | bowl support for damping | damping in the seismic isolation apparatus provided with the damping device which concerns on an Example. It is a schematic explanatory drawing which shows a part of the vibration displacement state of the elastic ball support for vibration control in the seismic isolation device including the vibration control device according to the embodiment. It is the schematic which shows the cross section of the modification of the elastic body ball | bowl support for damping | damping in the seismic isolation apparatus provided with the damping device which concerns on the Example. It is a figure which shows the vibration damping characteristic at the time of load 26400N with the elastic body ball | bowl for damping | damping in the seismic isolation apparatus provided with the damping device which concerns on an Example. It is a figure which shows the vibration damping characteristic at the time of load 67200N with the elastic body ball | bowl for damping | damping in the seismic isolation apparatus provided with the damping device which concerns on an Example. It is a figure which shows the vibration damping characteristic at the time of load 108000N with the elastic body ball | bowl for damping | damping in the seismic isolation apparatus provided with the damping device which concerns on an Example. It is a figure which shows the vibration damping characteristic at the time of load 6000N without the elastic body ball | bowl for damping | damping in the seismic isolation apparatus provided with the damping device which concerns on an Example. It is the schematic which shows the cross section of the seismic isolation structure with a damping device which concerns on a present Example. It is a schematic plan view which shows arrangement | positioning of the rigid ball support for seismic isolation in the base isolation structure with a damping device which concerns on a present Example, and the elastic body ball support for damping.

  The present invention has an object of realizing and providing a seismic isolation device having a vibration damping device that can exhibit a stable support function of a structure, an automatic home position return function, and a stable vibration damping function while having a simple structure. is there.

  The seismic isolation device including the vibration damping device according to the present invention includes a lower plate body having a conical surface on the vibration input side and a circular guard portion on the outer periphery of the conical surface; The lower surface disposed on the object side is a conical surface having an angle different from that of the conical surface of the lower plate body, and the upper plate body having a circular guard portion on the outer peripheral portion of the conical surface, and both the conical surfaces. A seismic isolation hard sphere bearing having a rigid sphere rolling between vibration centers, a lower plate body having a conical surface on the upper surface disposed on the vibration input side, and a vibration suppression object side. An upper plate body having a conical surface as a lower surface, and an elastic body ball disposed between the centers of the two conical surfaces and having a diameter larger than that of the rigid sphere and causing rolling frictional resistance by vibration. The above object is realized by a combination of the elastic ball bearing and the combination.

  1 (a), (b) to FIG. 13 and FIG. 14, FIG. 14 shows a seismic isolation device equipped with a vibration damping device according to an embodiment of the present invention and a seismic isolation structure equipped with these devices. Details will be described with reference to FIG.

The seismic isolation device 1 including the vibration damping device according to the embodiment of the present invention is illustrated in FIG. 1A as illustrated in FIG. 1A and the vibration damping device illustrated in FIG. This is constituted by a combination of a seismic isolation device comprising a seismic isolation hard ball bearing 10 and a vibration damping device comprising a vibration damping elastic ball bearing 30 shown in FIG. .
First, a seismic isolation device comprising the seismic isolation rigid ball bearing 10 shown in FIG. 1A according to the present embodiment will be described with reference to FIGS.

  The seismic isolation hard ball support 10 is arranged on the lower platen 11 arranged on the vibration input side such as a structure foundation, and on the structure main body side such as a house which is a seismic isolation object. It has a dish body 21.

  As shown in FIGS. 4 and 5, the lower plate body 11 is made of, for example, a rigid plate and is formed in a quadrangular planar shape, and has a conical shape whose center is the lowest point in the range from the center of the upper surface to the vicinity of the outer periphery. The bottom plate substrate 12 as the surface 12a, and the four rigid plate spacer plates 13 having a substantially rectangular plane disposed at the four corners of the bottom plate substrate 12 and outside the outer periphery of the conical surface 12a. And a guard plate 14 made of a rigid plate disposed on the lower dish substrate 12 with a gap.

  The guard plate 14 has a circular hole 15 which is formed in a deformed octagonal shape in plan and functions as a circular guard portion having a diameter corresponding to the outer periphery of the conical surface 12a. The conical surface 12a, the circular hole In a state where 15 is concentrically arranged, the guard plate 14 is connected to the lower plate substrate 12 with a gap by a set screw 16 screwed to the lower plate substrate 12 through the spacer plate 13.

  As shown in FIGS. 2 and 3, the upper plate body 21 is made of, for example, a rigid plate, and has a flat octagonal shape. The upper plate 21 has a conical shape whose center is the uppermost point in the range from the center of the lower surface to the vicinity of the outer periphery. The upper plate substrate 22 as the surface 22a, and four rigid plate-shaped spacer plates 23 arranged in the four corners of the upper plate substrate 22 and outside the outer periphery of the conical surface 22a. And a guard plate 24 made of a rigid plate arranged with a gap below the upper plate substrate 22.

  The guard plate 24 includes a circular hole 25 that is formed in a deformed octagonal shape in plan and functions as a circular guard portion having a diameter corresponding to the outer periphery of the conical surface 22a. The conical surface 22a, the circular hole With a concentric arrangement 25, the guard plate 24 is connected to the lower plate substrate 22 with a gap by a set screw 26 screwed to the upper plate substrate 22 through the spacer plate 23.

  Between the centers of the two conical surfaces 12a and 22a, as shown in FIGS. 1 (a), 3 and 5, a rigid sphere having a certain diameter made of, for example, a steel ball, a stainless sphere or the like that rolls by vibration input. 27 is arranged.

  The inclination angle θ1 of the conical surface 12a is set to, for example, 3.0 degrees, the inclination angle θ2 of the conical surface 22a is set to, for example, 1.5 degrees, and the inclination angles of the two conical surfaces 12a and 22a are made different. ing.

  In FIG. 1A, reference numeral 28 denotes a connecting bolt that connects the lower plate body 11 and the upper plate body 21 when the seismic isolation device 1 having the vibration control device is not used.

  FIG. 6 schematically shows a state in which the upper plate body 21 is displaced to the right (maximum displacement) with respect to the lower plate body 11 by vibration input due to an earthquake or the like.

  Next, a vibration damping device including the vibration damping elastic ball support 30 according to the present embodiment will be described with reference to FIGS. 1B, 7 and 8. FIG.

  In the vibration-suppressing elastic ball bearing 30 shown in FIGS. 1B and 7, the same elements as those in the seismic isolation rigid ball bearing 10 are denoted by the same reference numerals, and detailed description thereof is omitted. To do.

  The vibration-suppressing elastic ball support 30 shown in FIG. 1B, FIG. 7 and FIG. 8 is a lower plate body 11A arranged on the vibration input side such as a structure foundation and, for example, a vibration-damping object. An upper plate body 21A disposed on the side of the structure body such as a house, and the rigid ball 27 between the conical surface 12a of the lower plate body 11A and the conical surface 22a of the upper plate body 21A. The spacer plates 13 and 23 and the guard plate constituting the seismic isolation rigid ball support 10 are provided with an elastic ball 29 made of a rubber material or an elastic synthetic resin material having a larger diameter and causing rolling friction resistance due to vibration. The feature is that 14 and 24 are omitted.

  In FIG. 1B and FIG. 7, reference numeral 28 denotes a connecting bolt that connects the lower plate body 11 </ b> A and the upper plate body 21 </ b> A when the seismic isolation device 1 including the vibration control device is not used.

  Next, the operation and effect of the seismic isolation device 1 including the vibration damping device according to the present embodiment will be described.

  According to the seismic isolation device 1 including the vibration damping device according to the present embodiment having the above-described configuration, the seismic isolation hard ball support 10 in which the rigid ball 27 is disposed between the lower plate body 11 and the upper plate body 21; Since it is configured by a combination with the vibration-suppressing elastic ball support 30 in which the elastic ball 29 is disposed between the lower plate 11A and the upper plate 21A, the overall structure can be extremely simplified.

  In addition, the seismic isolation hard ball bearing 10 alone can easily move because the hard ball 27 can move in the 360-degree direction, and can easily move when an external force is applied when the load is light. As in the case of the seismic isolation device 1 including the vibration control device, the wobbling can be substantially eliminated even in the case of a light load by appropriately combining the seismic isolation hard ball support 10 and the vibration control elastic ball support 30.

  Further, even if the upper plate 21 moves horizontally up and down, the diameter of the rigid sphere 27 is constant, so the compression of the elastic sphere 29 is constant, and the elastic sphere 29 itself creeps (a phenomenon in which strain increases slowly with time). ) And the compression of the elastic sphere 29 is constant, so that the elastic sphere 29 that rolls while being compressed in accordance with the horizontal movement up and down also has a constant repulsive force, and absorbs vibration by a stable frictional resistance. Can exhibit excellent vibration damping effect.

  In the seismic isolation hard sphere support 10, the rigid sphere 27 rolls in contact with the conical surfaces 12a and 22a of the lower dish 11 and the upper dish 21, so that the seismic isolation hard sphere support 10 is disposed on the seismic isolation hard sphere support 10. When the load of the structured material acts on the conical surface 12a of the lower plate body 11 via the upper plate body 21 and the rigid sphere 27, the component force (structure) in the inclination direction of the conical surface 12a (center direction of the conical surface 12a) The automatic origin return force of the object is generated, and thus the structure can be returned to the steady position after the end of the vibration due to the earthquake or the like.

  In this case, by adjusting the inclination angles θ1 and θ2 of the conical surfaces 12a and 22a of the lower plate body 11 and the upper plate body 21, the automatic origin return force after the end of vibration due to an earthquake or the like can be adjusted. It is not necessary to provide a restoring mechanism such as a coil spring or a damper as in the example.

  Further, by setting the inclination angles θ1 and θ2 of the conical surfaces 12a and 22a of the lower plate body 11 and the upper plate body 21 according to the structure to which the structure is applied, it is possible to simply return to the optimum automatic origin according to the structure. Power can be realized.

  Furthermore, the radial dimensions of the conical surfaces 12a and 22a of the lower plate body 11 and the upper plate body 21 in the seismic isolation hard ball bearing 10 should be ½ of the horizontal movement distance at the time of vibration response due to an earthquake or the like. The seismic isolation hard ball bearing 10 can be realized in a compact configuration.

  The seismic isolation hard ball support 10 includes a guard plate 14 provided with a circular hole 15 that functions as a circular guard portion on the lower plate body 11 side, and a circular hole 25 that functions as a circular guard portion on the upper plate body 21 side. As shown in FIG. 6, the position of the rigid sphere 27 is restricted by the inner peripheral portions of the circular holes 15 and 25 when the upper plate body 21 is displaced maximum with respect to the lower plate body 11. As a result, it is possible to avoid the inconvenience that the hard sphere 27 jumps out of the seismic isolation hard sphere support 10.

  The vibration-suppressing elastic ball bearing 30 has a simple structure as described above, and the vibration-damping elastic body combined with the ball diameter and hardness of the elastic ball 29 and the seismic isolation hard-ball support 10. A maintenance-free structure can be easily realized by changing the number of installed ball supports 30 according to the structure (structure on the same plane).

  Next, vibration damping characteristics and vibration control when the base isolation device 1 including the vibration control device composed of the combination of the above-described base isolation hard ball bearing 10 and vibration suppression elastic ball bearing 30 is incorporated in a structure. Various measurement examples of vibration damping characteristics when the elastic ball support 30 is not used will be described with reference to FIGS. 10 to 13.

  In this case, measurement is performed with the number of seismic isolation rigid ball bearings 10 incorporated in the number required for load support and the number of damping elastic ball bearings 30 incorporated with the number required for damping.

  FIG. 10 shows the vibration damping elastic ball support 30 in the seismic isolation device 1 including the vibration damping device, and shows vibration damping characteristics when the load of the structure is 26400N.

  FIG. 11 shows the damping elastic body ball support 30 in the seismic isolation device 1 including the damping device, and shows the vibration damping characteristics when the load of the structure is 67200N.

  FIG. 12 shows vibration damping characteristics in the seismic isolation device 1 including the vibration damping device when the elastic ball support 30 for vibration damping is provided and the load of the structure is 108000N.

  FIG. 13 is a diagram showing vibration damping characteristics when the load of a structure having only the seismic isolation rigid ball bearing 10 without the damping elastic ball bearing 30 is 6000 N in the seismic isolation device 1 including the damping device. It is.

  As is clear from comparison between FIG. 10 to FIG. 12 and FIG. 13, the seismic isolation hard ball support 10 and the vibration suppression elastic ball support 30 in the seismic isolation device 1 including the vibration control device of the present embodiment. According to the combined structure, extremely excellent vibration damping characteristics can be exhibited in each load.

  FIG. 9 shows an elastic ball support 40 for vibration suppression, which is a modification of the elastic ball support 30 for vibration control. The elastic ball support 40 for vibration control is formed on the upper surface of the lower plate body 11A. The cone-shaped surface 12b having the sum of the angles of the conical surfaces 12a and 22a of the seismic isolation hard ball bearing 10, that is, (θ1 + θ2) degrees, and the lower surface of the upper plate 21A as the flat surface 21a, An elastic sphere 29 is arranged in the center of the conical surface 12b and the flat surface 21a.

  In the case of the elastic ball support 40 for vibration control, it is of course possible to adopt a configuration in which the upper surface of the lower plate body 11A is a flat surface and the lower surface of the upper plate body 21A is a conical surface contrary to the case described above. is there.

  Even when the seismic isolation device 1 including the vibration control device is configured by combining the vibration control elastic ball support 40 configured as described above with the seismic isolation hard ball support 10, the vibration control elastic body is also provided. The same operation and effect as the case of the seismic isolation device 1 including the vibration control device using the configuration of the ball bearing 30 can be exhibited.

  Next, the seismic isolation structure 50 using the seismic isolation device 1 provided with the vibration damping device of the present embodiment will be described with reference to FIGS. 14 and 15.

  This seismic isolation structure 50 is composed of four seismic isolation hard ball bearings 10 that constitute a seismic isolation device 1 having a vibration control device between a structure base 51 and a structure main body 52 such as a house. The apparatus and a vibration damping apparatus including two vibration damping elastic ball bearings 30 are separately arranged.

  That is, FIG. 14 and FIG. 15 show the structure in the case of constructing the structure main body 52 including the flat rectangular base beam 53 as shown in FIG. 15 on the flat structure foundation 51 made of mortar or the like. A total of four seismic isolation rigid ball bearings 10 are arranged on the foundation 51 below the four corners of the base beam 53, and in FIG. An example in which a ball bearing 30 is arranged to constitute a seismic isolation structure 50 is shown.

  In such a seismic isolation structure 50, the location and number of installations of the seismic isolation hard ball bearing 10 and the damping elastic ball bearing 30 are the size of the base beam 53, the structure main body including the base beam 53. Of course, various modes can be selected according to the load of 52.

  Further, it is of course possible to apply the seismic isolation device 1 having a vibration control device in which the seismic isolation hard ball bearing 10 and the vibration-damping elastic ball support 40 of the modification shown in FIG. 9 are combined.

  According to the seismic isolation structure 50 using the seismic isolation device 1 provided with the vibration damping device according to the present embodiment, the rigid ball bearing 10 for seismic isolation of the seismic isolation device 1 provided with the vibration damping device as described above. And the vibration-suppressing elastic ball support 30 (or the vibration-suppressing elastic ball support 40), while supporting the structure main body 52 more stably, the structure main body 52 after the vibration due to an earthquake or the like is finished. Automatic home return can be performed reliably, and without the coil spring, damper, etc. as in the conventional example, and vibration due to an earthquake or the like is generated by a stable friction resistance force while preventing creep of the elastic ball 29 itself. The seismic isolation structure 50 can be absorbed and has an excellent damping function.

  The present invention is widely applicable to various structures such as seismic isolation floors, equipment isolations, wooden houses, steel structure buildings, reinforced concrete structures, and the like.

DESCRIPTION OF SYMBOLS 1 Seismic isolation device provided with damping device 10 Seismic isolation rigid ball support 11 Lower plate body 11A Lower plate body 12 Lower plate board 12a Conical surface 12b Conical surface 13 Spacer plate 14 Guard plate 15 Circular hole 16 Set screw 21 Upper plate body 21A Upper plate body 21a Flat surface 22 Upper plate substrate 22a Conical surface 23 Spacer plate 24 Guard plate 25 Circular hole 26 Set screw 27 Hard sphere 29 Elastic body ball 30 Elastic body ball support for vibration control 40 Elasticity for vibration control Body ball support 50 Seismic isolation structure 51 Structure foundation 52 Structure body 53 Base beam

Claims (8)

A base plate disposed on the vibration input side, an upper plate body disposed on the seismic isolation object side, and a rigid ball that rolls due to vibration disposed between the lower plate body and the upper plate body, for seismic isolation Hard ball bearings,
A lower plate body arranged on the vibration input side, an upper plate body arranged on the vibration suppression object side, and arranged between the lower plate body and the upper plate body and having a larger diameter than the seismic isolation hard sphere. An elastic ball for vibration suppression having an elastic ball that generates rolling frictional resistance by vibration;
A seismic isolation device equipped with a vibration control device characterized by comprising a combination of the above. The upper plate disposed on the vibration input side has a conical surface, and the lower plate body provided with a circular guard on the outer peripheral portion of the conical surface, and the lower plate body disposed on the seismic isolation object side is the cone of the lower plate body. A conical surface having an angle different from that of the conical surface, and an upper plate body provided with a circular guard portion on the outer peripheral portion of the conical surface, and a rigid sphere that rolls due to vibration disposed between the centers of the conical surfaces. A hard ball bearing for seismic isolation;
A lower plate with a conical surface on the upper surface disposed on the vibration input side, an upper plate with a conical surface on the lower surface disposed on the object to be damped, and the center between the two conical surfaces An elastic sphere bearing for vibration suppression having an elastic sphere having a diameter larger than that of the rigid sphere and causing rolling friction resistance by vibration,
A seismic isolation device equipped with a vibration control device characterized by comprising a combination of the above. The upper plate disposed on the vibration input side has a conical surface, and the lower plate body provided with a circular guard on the outer peripheral portion of the conical surface, and the lower plate body disposed on the seismic isolation object side is the cone of the lower plate body. A conical surface having an angle different from that of the conical surface, and an upper plate body provided with a circular guard portion on the outer peripheral portion of the conical surface, and a rigid sphere that rolls due to vibration disposed between the centers of the conical surfaces. A hard ball bearing for seismic isolation;
A lower plate body arranged on the vibration input side, an upper plate body arranged on the vibration suppression object side, an upper surface of the lower plate body, and a center of the lower surface of the upper plate body, than the rigid ball An elastic sphere that has a large diameter and generates rolling frictional resistance by vibration. The upper surface of the lower plate body is a conical surface or a flat surface, and the lower surface of the upper plate body is a flat surface or a conical surface. A flexible elastic ball bearing,
A seismic isolation device equipped with a vibration control device characterized by comprising a combination of the above. The upper plate disposed on the vibration input side has a conical surface, and the lower plate body provided with a circular guard on the outer peripheral portion of the conical surface, and the lower plate body disposed on the seismic isolation object side is the cone of the lower plate body. A conical surface having an angle different from that of the conical surface, and an upper plate body provided with a circular guard portion on the outer peripheral portion of the conical surface, and a rigid sphere that rolls due to vibration disposed between the centers of the conical surfaces. A hard ball bearing for seismic isolation;
A lower plate body arranged on the vibration input side, an upper plate body arranged on the vibration suppression object side, an upper surface of the lower plate body, and disposed between the lower center of the upper plate body and larger than the rigid sphere. An elastic body ball that generates rolling frictional resistance by vibration at a diameter, and the upper surface of the lower plate body is a conical surface or a flat surface having a sum of angles of both conical surfaces of the rigid ball support, An elastic ball bearing for vibration control, wherein the lower surface of the upper plate body is a flat surface or a conical surface having the sum of the angles of both conical surfaces of the rigid ball bearing;
A seismic isolation device equipped with a vibration control device characterized by comprising a combination of the above. A plurality of lower plate bodies arranged on the structure foundation side, an upper plate body arranged on the structure main body side, and a rigid ball that rolls by vibration arranged between the lower plate body and the upper plate body. A hard ball bearing for seismic isolation;
A lower plate placed on the structure base side, an upper plate placed on the structure main body side, and placed between the lower plate and the upper plate and has a larger diameter than the rigid sphere and rolls by vibration. A plurality of vibration-suppressing elastic ball bearings having an elastic ball generating frictional resistance;
The plurality of seismic isolation hard ball bearings and the plurality of damping elastic ball bearings are separately arranged between the structure foundation and the structure main body. Seismic structure. The upper surface disposed on the structure base side is a conical surface, and the lower plate body provided with a circular guard portion on the outer peripheral portion of the conical surface, and the lower surface disposed on the structure body side is the cone of the lower plate body. A conical surface having an angle different from that of the conical surface, and an upper plate body provided with a circular guard portion on the outer peripheral portion of the conical surface, and a rigid sphere that rolls by vibration disposed between the centers of both conical surfaces. Individual seismic isolation ball bearings,
Arranged between the lower plate with a conical surface on the upper surface disposed on the structure foundation side, an upper plate with a conical surface on the lower surface disposed on the structure main body, and the center of the two conical surfaces A plurality of vibration-suppressing elastic ball bearings having an elastic ball that has a diameter larger than that of the hard ball and generates rolling frictional resistance by vibration,
The plurality of seismic isolation hard ball bearings and the plurality of damping elastic ball bearings are separately arranged between the structure foundation and the structure main body. Seismic structure. The upper plate disposed on the vibration input side has a conical surface, and the lower plate body provided with a circular guard on the outer peripheral portion of the conical surface, and the lower plate body disposed on the seismic isolation object side is the cone of the lower plate body. A conical surface having an angle different from that of the conical surface, and an upper plate body provided with a circular guard portion on the outer peripheral portion of the conical surface, and a rigid sphere that rolls due to vibration disposed between the centers of both conical surfaces. Seismic hard ball bearing,
A lower plate body arranged on the structure base side, an upper plate body arranged on the structure body side, an upper surface of the lower plate body, and arranged between the lower surface center of the upper plate body and larger than the rigid sphere. A plurality of elastic spheres that generate rolling frictional resistance due to vibration, the upper surface of the lower plate body being a conical surface or a flat surface, and the lower surface of the upper plate body being a flat surface or a conical surface Elastic ball support for vibration control of
The plurality of seismic isolation hard ball bearings and the plurality of damping elastic ball bearings are separately arranged between the structure foundation and the structure main body. Seismic structure. The upper plate disposed on the vibration input side has a conical surface, and the lower plate body provided with a circular guard on the outer peripheral portion of the conical surface, and the lower plate body disposed on the seismic isolation object side is the cone of the lower plate body. A conical surface having an angle different from that of the conical surface, and an upper plate body provided with a circular guard portion on the outer peripheral portion of the conical surface, and a rigid sphere that rolls due to vibration disposed between the centers of both conical surfaces. Seismic hard ball bearing,
A lower plate body arranged on the structure base side, an upper plate body arranged on the structure body side, an upper surface of the lower plate body, and arranged between the lower surface center of the upper plate body and larger than the rigid sphere. An elastic body ball that generates rolling frictional resistance by vibration at a diameter, and the upper surface of the lower plate body is a conical surface or a flat surface having a sum of angles of both conical surfaces of the rigid ball support, A plurality of vibration-suppressing elastic ball bearings in which the lower surface of the upper plate body is a flat surface or a conical surface having the sum of the angles of both conical surfaces of the rigid ball bearing;
The plurality of seismic isolation hard ball bearings and the plurality of damping elastic ball bearings are separately arranged between the structure foundation and the structure main body. Seismic structure.

Images