JP2011027251A - Device for supporting seismic isolation ball - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a device for supporting a seismic isolation ball, which includes, inside the seismic isolation ball, an original position introductive restoring elastic stick for performing restoration to an original position by preventing a seismic isolation ball from rolling in an aseismic condition caused by high wind or the like and preventing a lightweight structure from swinging without employing an elastic force. <P>SOLUTION: From upper and lower poles of the seismic ball 1 so sandwiched by upper and lower rolling plates 2, 3 as to abut against the plates, an inductive cylindrical hole 5 is bored inside an inductively restoring body storage room 4 provided within the seismic isolation ball 1. One end of the original position introductively restoring elastic stick E is firmly attached to each of the upper and lower rolling plates 2, 3, from the inside of the inductive restoring body storage room 4 through the inductive cylindrical hole 5, while the other end thereof is allowed to be free. Centering around the lower rolling plate 3 to which one end of the original position introductive restoring elastic stick E is firmly attached, a seismic isolation ball rolling transferring start depressed hole 7 is bored to allow the lower pole of the seismic isolation ball 1 to be put therein. Then, a support transferable laying base 9 is made close to an entire circumference of the seismic isolation ball 1 to have the same level as that of the seismic isolation ball 1, and is arranged between the upper and lower rolling plates 2, 3 to stably support the lightweight structure in an aseismic condition. During rolling for seismic isolation, the seismic isolation ball 1 goes up from the depressed hole 7 and rolls for seismic isolation, so that the elastic stick E reciprocates inside the inductive cylindrical hole 5. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

The present invention relates to a seismic isolation ball support device disposed in a main support part between a lower base material and a foundation board such as a light structure, and more specifically, the upper and lower poles of a seismic isolation ball sandwiched and abutted between upper and lower rolling plates. From the induction restoring body accommodating chamber provided in the seismic isolation sphere, a guide cylinder hole is opened, and the inductive restoring elastic rod shape having a strong flexible force passes through the guiding cylinder hole from the induction restoring body accommodation chamber. By fixing one end of the body to the upper and lower rolling plates and placing the other end in a free shape, the in-situ guided recovery elastic rod-shaped body is placed in the guide tube hole when the base-isolated ball rolls. The load is placed around the horizontal outer periphery of the seismic isolation ball under normal conditions. A moving foundation or load-supporting fixed foundation shares and supports the load of light structures together with the seismic isolation ball and supports external forces such as strong winds. Seismic isolation that prevents rocking caused by light structures, etc., and only the base-isolated ball is rolling-isolated at the time of rolling isolation, or the load-supporting moving support base or the load-supporting fixed base slides together. The present invention relates to a ball bearing device.

Base-isolated ball bearings are widely used because they have the great economic advantage of using the same base-isolated ball bearings for light-weight structures with different weights within the bearing load-bearing range. However, in the case of seismic isolation ball bearings using flat rolling plates above and below the seismic isolation ball, the seismic isolation ball easily rolls with an external force such as strong winds in normal times, and light structures etc. swing. The seismic isolation sphere has the disadvantage that it does not automatically restore to its original position.

A single seismic isolation ball bearing device with a single base isolation ball and upper and lower flat rolling plates. A large number of cylindrical members are arranged around the base isolation ball, and springs and vibration absorption dampers are arranged between the cylindrical members. A seismic isolation method and apparatus for absorbing seismic energy by a frictional force between a cylindrical member and a sphere are known as conventional techniques (see, for example, Patent Document 1).

Patent Document 1 described above has an effect of absorbing vibration energy. However, in order to obtain a frictional force that reliably resists external forces such as strong winds, a large frictional force is required, and if it is reliably resisted, the rolling performance and the restoring force are significantly reduced. In addition, it does not have an automatic restoration device for the original position, and it is necessary to provide an automatic restoration device.

In addition, in a single seismic isolation ball bearing device having one seismic isolation ball and upper and lower plane rolling plates, one side of the rolling bearing body 7 is fixed to the mounting plate 4 fixed to the upper structure 2, The other is brought into contact with a mounting plate 5 fixed to the lower structure 3 so as to be able to roll, and a rolling bearing body 7 is provided in the hollow laminated rubber 6 to obtain an in-situ restoring force and to insulate unpleasant traffic vibration and the like. A conventional seismic isolation device is known (see, for example, Patent Document 2).

In the above-mentioned Patent Document 2, the hollow laminated rubber 6 surely restores the seismic isolation ball to the original position, and the rolling support 7 is fixed to the mounting plate 4 fixed to the upper structure 2 so that the hollow laminated rubber is The effect of preventing 6 buckling is obtained. However, although the effect of insulating unpleasant traffic vibrations and the like can be obtained, since the upper structure 2 is supported by the rolling bearing body 7, the rolling bearing body 7 is provided even if the hollow laminated rubber 6 has a large horizontal rigidity. Is unable to resist external forces such as strong winds, and the rolling support 7 is considered to swing.

Furthermore, in a single seismic isolation ball bearing device having a single base isolation ball and upper and lower plane rolling plates, an opening 21 surrounding the sphere 18 between the upper surface member 14 and the lower surface member 16 is formed. A conventional seismic isolation device is obtained in which one end side of rubber members 22 and 23 made of, for example, only four rubbers is fixed to the guide member 20 and the other end side is fixed to the upper surface member 14 and the lower surface member 16 to obtain an in-situ restoring force. It is known (see, for example, Patent Document 3).

In Patent Document 3 described above, the rubber members 22 and 23 provide an in-situ restoring force, and the sphere 18 surrounded by the opening 21 of the guide member 20 has the effect of preventing excessive rolling. However, it is considered that the rubber members 22 and 23 made only of rubber cannot resist an external force such as a strong wind, and the sphere 18 easily swings. Note that no swing prevention device is provided.

Still further, a single seismic isolation ball bearing device having one base isolation ball and upper and lower plane rolling plates, and a base isolation body 5 interposed between the base 2 and the base isolation body 5. And one end of the tension wire 6 is fixed to the anchor 8 in the base portion 2 and the other end is fixed to the spring material 9 provided in the support floor portion 4. There is known a conventional seismic isolation structure for a building that prevents tension from being applied by the spring material 9 to easily shake the original position restoring force (see, for example, Patent Document 4).

The above-mentioned Patent Document 4 has an effect that the seismic isolation body 5 can reliably obtain the in-situ restoring force by the tension wire 6 fixed to the spring material 9. However, even if the tension of the spring material 9 is adjusted, it is considered that the seismic isolation body 5 swings due to an external force such as a strong wind.

JP 2002-242477 A JP-A-11-159186 Japanese Examined Patent Publication No. 6-74670 Public Utility Showa 63-76159

In the above-described conventional technology, the restoring force of the rubber elastic body and spring material of the automatic restoring device to the original position is adjusted to obtain both the prevention of swinging by an external force such as strong wind and the automatic restoring force to the original position. That is very difficult. Automatic restoration device to original position Without using rubber elastic body and spring material, and without using a dedicated anti-vibration device, anti-vibration function by external force such as strong wind and automatic restoring force to original position The emergence of seismic isolation ball bearing devices with both functions is strongly desired.

  The present invention has been made in order to address the above-described problems, and is provided with a single base isolation ball and a vertical rolling plate on the top and bottom without a separate dedicated anti-swing device. The ball bearing device has a function to stably support loads such as light structures in normal times, prevent swinging due to external forces such as strong winds, etc., and to restore the base isolation ball to its original position at the end of the earthquake motion. The object is to provide a reliable and economical seismic isolation ball bearing device.

According to a first means for achieving the above object of the present invention, a seismic isolation ball made of a single rigid body is disposed between a flat upper rolling plate and a lower rolling plate, and the seismic isolation is provided. A hollow induction restoring body accommodation chamber is formed in the sphere, and a guide cylinder hole is opened between the upper and lower poles of the seismic isolation sphere and the induction restoration body accommodation chamber, and the induction cylinder hole comes into contact therewith. The other end side of the in-situ induction restoring elastic rod-like body having one end appropriately fixed to the upper and lower rolling plates is allowed to pass through the inside of the guide tube hole to reach the in-situ restoration body accommodating chamber. It is the structure which arrange | positions a restoring elastic rod-shaped body freely.

The in-situ guided elastic restoring rod can displace the amount of displacement required when the seismic isolation ball is rolling isolated while reciprocating in the guide tube hole when the base isolation ball is rolling isolated. It has a possible length, does not expand and contract in the length direction, is flexible, and has an elastic force necessary to restore it to its original position.

The in-situ induction restoring elastic rod is used as a bundle of a single or a plurality of round linear steel spring bodies, round linear fiber reinforced plastics, engineering plastics, and the like. In addition, a plurality of round linear elastic bodies and rubber elastic bodies of the above materials are combined and used in a round bar shape. Furthermore, the plurality of round linear elastic bodies and rubber elastic bodies are used. A tension coil spring is used in combination with the body. The in-situ guided elastic elastic body is not necessarily limited to the above, and is an elastic body that does not expand and contract in the vertical direction and is flexible in the horizontal direction. Any material can be used as long as it can be restored to the position, and it can be used as a single body or a composite.

With the above configuration, when the base-isolated sphere is subjected to rolling isolation, the in-situ guided restoration elastic rod body freely slides back and forth within the guide tube hole, and follows the rolling direction to move outside the guide tube hole. In this way, it is flexed in all directions to suppress and guide the excessive rolling of the seismic isolation sphere, and the seismic isolation sphere is restored to its original position at the end of the rolling isolation. Even if an external force such as a strong wind acts on a light structure or the like in a normal state, the in-situ guided restoring elastic rod-like body exists upright as a mandrel column in the guiding cylinder hole and the seismic isolation ball Therefore, the seismic isolation ball is prevented from rolling, and the light structure or the like is prevented from swinging.

According to a second solution, a cylindrical rolling follow-up moving cylinder ring of an appropriate height made of a rigid body is arranged in a free manner in contact with the circumferential edge of the horizontal diameter of the seismic isolation sphere, and the follow-up is further performed. An appropriate cylindrical load-supporting moving support base that is a rigid body and surrounds the outer periphery of the horizontal axis of the moving cylinder ring, between the upper rolling plate and the lower rolling plate, and the diameter of the seismic isolation sphere As the same height, the upper and lower end surfaces are arranged as smooth surfaces in sliding contact with the upper and lower rolling plates, and further, the inner cylindrical wall of the load supporting moving placing base and the follower moving cylindrical ring The connecting material is disposed between the outer cylinder wall with an appropriate contact prevention interval width, and both the load supporting moving support base and the following moving cylindrical ring are appropriately fixed. .

An appropriate contact prevention interval width of the connecting material that connects the load supporting moving placing base and the follower moving cylindrical ring is the in-situ induced elastic elasticity when the seismic isolation ball performs rolling isolation in all directions. Since a part of the rod-shaped body comes out of the guide tube hole and bends, there is a possibility that the in-situ guided elastic restoring rod-shaped body and the load support moving placement base may come into contact with each other. The minimum width that can be prevented from appearing is an appropriate contact prevention interval width.

With the above configuration, in the normal state, the base-isolated ball and the load support moving support base are at the same height, so that both the load of the light structure and the like are shared and supported stably, and the light structure by an external force such as a strong wind. In the case of rolling isolation, the base isolation ball is isolated from rolling, and the base isolation ball during rolling isolation is moved via the rolling tracking moving ring. The load support moving support foundation is pushed in the same direction, the load support moving support foundation slides on the lower rolling plate, and both the load of the light structure and the like are supported in the same way and rolls synergistically. It is an intermediate between the base isolation and the slip base isolation, and performs the base isolation motion with a small frictional friction.

A third solution is to cause the upper rolling plate and the lower rolling plate to have a predetermined ball rolling range plane, and to be adjacent to the outer peripheral edge of the upper rolling plate and the lower rolling plate. The load supporting fixed foundation made of a rigid body is erected with the lower end side fixed to the foundation board, and a predetermined sliding plane is formed on the upper end surface of the load supporting fixing base from the outer peripheral edge of the load supporting fixing base. The fixed base top sliding plate with a smooth surface made of rigid body, which has a width, is fixedly disposed under the bottom substrate with the bottom surface height of the fixed base top sliding plate being the same height as the bottom surface of the upper rolling plate. The upper end surface of the load supporting fixed base is slidably brought into contact with the lower surface of the fixed base upper end sliding plate.

The predetermined ball rolling range plane refers to the radius of the seismic isolation sphere used, the horizontal displacement required by the seismic isolation sphere used for rolling isolation, and the allowable over-rolling horizontal displacement of the seismic isolation sphere. The range in which the radius is the sum of the two is the ball rolling range plane. Note that the predetermined sliding plane width is a sliding with a width obtained by adding the horizontal displacement amount required for the base-isolated ball to be used at the time of rolling isolation to the allowable over-rolling horizontal displacement amount of the base-isolating ball. The plane width.

With the above configuration, in normal times, since the upper pole height of the seismic isolation sphere and the height of the upper end surface of the load support fixing base are the same, both the load of the light structure and the like are stably supported and the strong wind In the case of rolling isolation, the seismic isolation ball is rolling isolated, and the load supporting fixed base upper end surface and the fixed base upper end sliding plate lower surface Both sides share and support the load of light structures, etc., and synergistically perform intermediate motion isolation between rolling isolation and sliding isolation, with low frictional resistance. To do.

A fourth solution is to insert a part of the lower pole side of the seismic isolation sphere from the upper surface of the lower rolling plate, centering on the in-situ induction restoring elastic rod-like body fixed at one end to the upper surface of the lower rolling plate. A rolling transition starting depression hole of the seismic isolation ball having a moderately sloping surface and a moderately inclined surface is formed, and the lower pole of the base isolation ball is placed in the rolling transition activation depression hole When the load support moving base or the load support fixed base upper end surface height is dropped into the rolling transition starting recess hole, It is configured to be the same height as the upper pole height of the seismic isolation ball.

The appropriate depth of the seismic isolation ball rolling transition starting depression hole into which a part of the base pole side of the seismic isolation ball is inserted and the gently inclined surface indicate that the lower rolling plate is displaced horizontally during rolling isolation. The seismic isolation ball begins to rotate, and due to the rotation inducing action of the in-situ guided restoring elastic rod, the seismic isolation ball easily and reliably climbs up the conical hole slope from within the rolling transition activation depression hole, It is the minimum depth and gentle inclined surface that can ride on the upper surface of the lower rolling plate.

According to the above configuration, the normal pole height of the dropped seismic isolation sphere and the upper end surface height of the load support moving support base or the load support fixed base are the same height in normal times, so that the starting is further performed. Since the lower pole side of the seismic isolation sphere falls in the hollow, the load of light structures and the like is further shared and supported by both sides to prevent swinging due to external forces such as strong winds, and rolling isolation In some cases, the upper end surface of the load support moving base is separated from the lower surface of the upper rolling plate by riding on the upper surface of the lower rolling plate from the inside of the rolling transition starting recess hole, and the load supporting The upper end surface of the fixed foundation and the lower surface of the fixed base upper end sliding plate are separated from each other, and only the seismic isolation ball bears a load of a light structure or the like alone and starts rolling isolation. The load-supporting moving base is pushed by the rolling force of the seismic isolation ball and slides on the lower rolling plate with no load following the entire rolling direction.

According to a fifth solution, a part of the lower pole side of the seismic isolation sphere is appropriately arranged in the horizontal direction around the guide tube hole on the lower pole side of the seismic isolation sphere abutting the upper surface of the lower rolling plate. Cutting and removing using a slight height to form a rolling transition starting plane of the seismic isolation sphere, centering on the in-situ guided restoring elastic rod-shaped body having one end fixed to the upper surface of the lower rolling plate, The rolling transition starting plane is brought into contact with the upper surface of the lower rolling plate, and the upper end height of the load support moving support base or the load support fixing base is cut off and brought into contact with the upper surface of the lower rolling plate. It is the structure which becomes the same height as the top pole height of this seismic isolation ball at the time.

An appropriate slightly cut and removed height that horizontally cuts and removes a part of an appropriate slight height centering on the guide tube hole on the lower pole side of the seismic isolation ball is an appropriate slight cut and removed height at the time of rolling isolation. When the rolling plate starts horizontal displacement, and due to the rotation-inducing action of the in-situ guided restoring elastic rod, the base-isolated ball rotates and the spherical portion of the base-isolating ball can be easily Is the minimum cutting removal height at which the rolling can be started in contact with the.

With the above configuration, in normal times, the upper pole point height of the seismic isolation ball in which the rolling transition starting plane of the seismic isolation ball is in contact with the upper surface of the lower rolling plate and the load support moving support base or the load support Since the upper end surface height of the fixed foundation is the same height, the rolling transition starting plane abuts against the upper surface of the lower rolling plate, so that both the load of the light structure and the like can be shared and supported stably. In the case of rolling isolation, the spherical part of the base isolation ball abuts on the upper surface of the lower rolling plate and starts rolling. The upper end surface of the load supporting moving support base and the lower surface of the upper rolling plate are separated from each other, and the upper end surface of the load supporting fixed base and the lower surface of the fixed base upper end sliding plate are separated from each other, thereby However, the load of light structures etc. is borne alone and rolling isolation is started. The load-supporting moving base is pushed by the rolling force of the seismic isolation ball and slides on the lower rolling plate with no load following the entire rolling direction.

By means of the first solution, one end side of the in-situ induction restoring elastic bar is fixed to the upper and lower rolling plates, and the other end side is accommodated in the induction cylinder hole in the seismic isolation sphere and in the induction restoration body. The in-situ induction-recovered elastic rod-like body, which is circularly linear in a normal state, is arranged upright like a mandrel column in the guide cylinder hole by arranging the seismic isolation ball in a bowl shape. Thus, the seismic isolation ball is prevented from rolling and the light structure or the like is prevented from swinging.

The base isolation ball during rolling isolation is fixed to the upper and lower rolling plates at one end side, and the other end side is freely disposed in the guide tube hole by the in-situ induction restoring elastic rod-like body, Since the over-rolling is suppressed and guided from within the guide tube hole, the base-isolated ball can roll-isolate without any trouble in all rolling directions. The original position can be restored without hindrance.

The in-situ induction restoring elastic rod-like body is obtained by a simple structure consisting of a single or a plurality of round linear elastic bodies of general-purpose materials, and does not require a precise and complicated manufacturing process and can be obtained at low cost. .

The in-situ induced elastic bar is built in the seismic isolation sphere in a shielded manner from the outside, so that the in-situ induced elastic bar is easy to maintain and compact with a simple structure and durability. Economical seismic isolation ball bearing device.

According to the second solution, the seismic isolation ball bearing device generally needs to satisfy both the function as the foundation of the building and the seismic isolation function. In fact, there is a sense of instability as the foundation of buildings. By disposing the load-supporting moving stand on the outside of the base-isolating ball, the base-isolating ball is built in the load-supporting moving stand and cannot be seen from the outside. Can be seen as an independent foundation for ordinary buildings, providing a view of stability. In practice, it functions as an independent foundation for ordinary buildings in normal times, and supports light structures and the like stably to prevent swinging. In the case of rolling isolation, the base isolation ball performs rolling isolation, and the load-carrying moving base is slip isolation. Synergistically, it is an intermediate between rolling isolation and sliding isolation, with low frictional resistance. Seismically isolated.

By the third solution means, it is undeniable that the seismic isolation ball bearing device has a visually unstable appearance as the foundation of the building. By arranging the load supporting and fixing foundation disposed outside the rolling range of the seismic isolation ball, the seismic isolating ball is built in the load supporting and fixing foundation and cannot be visually observed from the outside. The appearance of the load-supporting fixed foundation is visually observed as a normal cloth foundation of a building, and a stable view is obtained. Also, in practice, it functions as a normal fabric foundation for normal buildings, and stably supports light structures and the like to prevent swinging. At the time of rolling isolation, the base-isolating ball rolls off, and the base of the load-supporting fixed base and the bottom of the fixed base upper sliding plate are slip-isolated, and both loads of light structures, etc. In the same way, it also supports the sharing and synergistically performs the motion isolation with a small frictional resistance between the rolling isolation and the sliding isolation.

According to a fourth solution means, a rolling transition starting recess hole is opened on the upper surface of the lower rolling plate, the seismic isolation ball is dropped into the inner bottom of the rolling transition starting recess hole, and the load supporting movement is performed. The upper end surface height of the laying base or the load support fixing base is set to the same height as the upper pole height of the seismic isolation ball when it is dropped into the rolling transition starting depression hole. The seismic isolation ball and the load support moving support base or the load support fixed base both share and stably support the load of light structures, etc., and prevent swinging due to external forces such as strong winds. Occasionally, only the seismic isolation ball that rides on the upper surface of the lower rolling plate from within the rolling transition activation recess hole bears the load of a light structure or the like and starts rolling isolation.

With the fifth solution, a part of the lower pole side of the seismic isolation sphere is appropriately adjusted in the horizontal direction around the guide tube hole on the lower pole side of the seismic isolation sphere abutting the upper surface of the lower rolling plate. Using a slight height to cut and remove to form a rolling transition starting plane of the seismic isolation ball, abutting the rolling transition starting plane on the upper surface of the lower rolling plate, The upper end surface height of the load supporting base is cut and removed so that it is the same height as the upper pole of the seismic isolation ball when it is brought into contact with the upper surface of the lower rolling plate. The seismic isolation sphere in contact with the upper surface of the moving plate and the load support moving support base or the load support fixed base both share and stably support the load of light structures and the like to prevent swinging due to external forces such as strong winds. At the time of rolling isolation, only the seismic isolation ball having the rolling transition starting plane bears the load of a light structure or the like and starts rolling isolation.

(A) The longitudinal cross-sectional view of the seismic isolation ball bearing apparatus A which concerns on Embodiment 1. FIG. (B) The longitudinal section at the time of displacement of Drawing 1a. (C) The cutting | disconnection top view of the XX part of FIG. 1a. (A) Longitudinal sectional view of the in-situ induced restoration elastic rod E-1. (B) The YY cutting | disconnection top view of Fig.2 (a). (C) E-2 longitudinal cross-sectional view of an in-situ induction restoration elastic rod-shaped body. (D) The cutting | disconnection top view of the ZZ part of FIG.2 (c). (E) Longitudinal sectional view of the in-situ induced restoring elastic rod-like body E-3. (F) The cutting top view of the PP part of FIG.2 (e). (A) The longitudinal cross-sectional view of the seismic isolation ball bearing apparatus B which concerns on Embodiment 2. FIG. (B) The longitudinal section at the time of displacement of Drawing 3a. (A) The longitudinal cross-sectional view of the seismic isolation ball bearing apparatus C which concerns on Embodiment 3. FIG. (B) The longitudinal section at the time of displacement of Drawing 4a. (A) The longitudinal cross-sectional view of the seismic isolation ball bearing apparatus F which concerns on Embodiment 4. FIG. (B) A longitudinal sectional view of the seismic isolation ball bearing device G according to the fifth embodiment. (C) Longitudinal sectional view of the seismic isolation ball bearing device H according to the sixth embodiment. (A) The longitudinal cross-sectional view of the seismic isolation ball bearing apparatus K which concerns on Embodiment 7. FIG. (B) A longitudinal sectional view of the seismic isolation ball bearing device L according to the eighth embodiment. The longitudinal cross-sectional view of the seismic isolation ball support apparatus M which concerns on Embodiment 9. FIG. (A) Arrangement plan view of a seismic isolation ball bearing device provided with a load support fixing base. (B) Arrangement plan view at the time of displacement of FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The white arrow in the figure indicates the horizontal displacement direction of the ground. Throughout the drawings, the same components are described with the same numbers, and a part of the description is omitted.

(First Embodiment) The seismic isolation ball bearing device A will be described with reference to FIG. 1. A flat upper rolling plate 2 and a lower rolling plate 3 are provided with a seismic isolation ball 1 made of a single rigid body in between. The hollow induction restoring body accommodating chamber 4 is formed in the seismic isolation ball 1, and the cylindrical guiding cylinder holes 5 are opened between the upper and lower poles of the seismic isolation ball 1 and the induction restoring body accommodation chamber 4. The other end side of the in-situ induction restoring elastic rod-like body E, which is appropriately fixed at one end side to the upper rolling plate 2 and the lower rolling plate 3 with which the guiding cylindrical hole 5 abuts, is inserted into the guiding cylindrical hole 5. Is allowed to pass through the guiding and restoring body accommodating chamber 4 and is arranged freely.

Inserting a part of the lower pole side of the seismic isolation ball 1 from the upper surface of the lower rolling plate 3 around the upper surface of the lower rolling plate 3 around the in-situ guided elastic bar E having one end fixed to the upper surface of the lower rolling plate 3 A rolling transition starting depression 7 of the base-isolated sphere 1 having a gently sloping inclined surface is opened, and the lower pole side of the base isolation sphere 1 is guided into the rolling transition starting depression 7. The tube hole 5 is dropped so as to contact.

A cylindrical rolling follow-up moving cylinder ring 8 of an appropriate height made of a rigid body is placed in contact with the periphery of the horizontal diameter circle of the seismic isolation sphere 1, and further outside the follow-up moving cylinder ring 8 horizontally. An appropriate cylindrical load support moving support base 9 made of a rigid body and surrounding the periphery is placed between the upper rolling plate 2 and the lower rolling plate 3 in the seismic isolation ball rolling transition activation recess hole 7. With the same height as the dropped seismic isolation ball 1, the upper and lower foundation surfaces 10 and 11 of the load support moving base 9 are brought into contact with the upper and lower rolling plates 2 and 3 as smooth surfaces,
Between the inner cylindrical wall of the load supporting moving support base 9 and the outer cylindrical surface of the following moving moving ring 8, the in-situ guided elastic restoring rod E is placed on the load supporting moving mounting base 9 when the base isolation ball 1 is isolated from rolling. A connecting member 12 having a contact prevention interval width that does not contact with each other is provided and both are connected and fixed.

The appropriate depth of the seismic isolation ball rolling transition activation recess 7 into which a part on the lower pole side of the seismic isolation ball 1 is inserted and the gently inclined surface are as the lower rolling plate 3 is horizontally displaced during the rolling isolation. The seismic isolation ball 1 starts to rotate and the seismic isolation ball 1 easily and reliably climbs up the conical hole slope from the inside of the rolling transition activation recess hole 7 by the rotation induction action of the in-situ guided elastic bar E. This is the minimum depth and gentle slope that can ride on the upper surface of the lower rolling plate 3.

The cylinder diameter of the guide cylinder hole 5 is a cylinder diameter in which the in-situ guided elastic restoring rod E is present in the cylinder and can easily reciprocate freely during rolling isolation. Determined from the thickness of the elastic rod E. The thickness of the in-situ induced elastic rod-like body E is such a thickness that a restoring force capable of guiding the seismic isolation sphere 1 and restoring it to the original position can be obtained. Suitable for use. The length of the in-situ guided elastic bar E is such a length that the seismic isolation sphere 1 can displace the required amount of displacement during rolling isolation without any hindrance, and the required amount of displacement was displaced. At this time, the tip on the other end side is the length existing in the guiding and restoring body accommodating chamber 4.

An appropriate pull-out prevention stopper 6 may be screwed to the tip of the in-situ guided restoring elastic rod-like body E that has reached the guided restoring body accommodating chamber 4. Further, the pull-out prevention stopper 6 may be used with a damper function. In order to fix the one end side of the in-situ guided elastic restoring rod E to the upper rolling plate 2 and the lower rolling plate 3, the upper rolling plate 2 and the lower rolling plate 3 are penetrated and opened. When one end of the position-inducing elastic bar E is passed through, an appropriate fixing tool is screwed to the tip, and the upper rolling plate 2 and the lower rolling plate 3 are screwed and used, the tensile resistance is high. Sticking is obtained. In addition, in order to fix the one end side of the in-situ induction restoring elastic rod-like body E to the upper rolling plate 2 and the lower rolling plate 3, the fixing is not limited to the above, but if it can be fixed detachably, any Can also be used.

The hollow induction restoration body accommodating chamber 4 is not limited to using one hollow induction restoration body accommodation chamber 4, and two elongated cylindrical induction restoration body accommodation chambers 4 can be used. It is preferable to use the elongated cylindrical shaped restoration body accommodating chamber 4 and the guiding cylinder hole 5 integrally formed. In addition, since the seismic isolation ball 1 bears a load of a light structure or the like, the thickness of the spherical wall layer between the entire outer peripheral edge of the seismic isolation ball 1 and the hollow induction restoring body accommodating chamber 4 is sufficient load resistance. Ensure thickness.

The appropriate height of the cylindrical rolling follow-up moving cylindrical ring 8 is that the in-situ guided elastic rod E is positioned at both upper and lower ends of the rolling follow-up moving cylindrical ring 8 during the rolling isolation of the seismic isolation ball 1. It is an appropriate height that can avoid the collision.

An appropriate amount of radius can be used for the radius of the seismic isolation sphere 1, but it is necessary when the base isolation sphere 1 is used for rolling isolation by using the horizontal displacement required by the seismic isolation sphere 1 for the radius. When the horizontal displacement amount is rolled, the guide cylinder hole 5 mouth reaches the position rotated about 57 degrees from the upper and lower poles of the original position, and the in-situ guided elastic restoring rod E is easily and without difficulty within this angular range. The seismic isolation ball 1 can be guided flexibly to be restored to the original position. In addition, if the in-situ induced elastic rod-like body E to be used can be flexed without hindrance, an appropriate amount of radius can be used for the radius of the seismic isolation sphere 1 regardless of the rotation angle.

The seismic isolation sphere 1 can be further divided into an appropriate number in an appropriate position and direction for convenience of maintenance and management of the seismic isolation sphere 1 and used as a screw assembly type.

The seismic isolation ball 1, the upper rolling plate 2, and the lower rolling plate 3 made of a rigid body are all used as long as they are rigid materials that have the strength to share and stably support the load of light structures, etc. Castings, etc.), light metals, high-strength concrete, fiber-reinforced concrete, fiber-reinforced plastic, etc. are suitable for use alone or in combination. As the outer shapes of the upper rolling plate 2 and the lower rolling plate 3, appropriate outer shapes such as a circle, a square, and a polygon are used. The rolling surfaces of the upper rolling plate 2 and the lower rolling plate 3 are appropriately smooth surfaces.

The cylindrical rolling follow-up moving cylindrical ring 8 has an inner cylindrical surface side that rubs against the seismic isolation ball 1 at the time of rolling isolation, and therefore requires a friction-resistant inner cylindrical surface material, such as steel, light metal material, and friction resistance. A suitable synthetic resin or the like is suitable for formation, and the connecting member 12 can be formed using an appropriate material such as a steel material, a light metal material, or a synthetic resin. In addition, the rolling follow-up moving cylinder ring 8 and the connecting member 12 can be integrally formed of the same material.

The load-supporting moving support base 9 has a load-bearing strength for stably supporting a load of a light structure or the like in a normal state, and is further pushed and moved by the seismic isolation ball 1 when the seismic isolation ball 1 rolls. For this reason, it is desirable that the weight be light enough to move easily. Single or composite materials such as iron materials (steel, castings, etc.), light metals, high-strength concrete (including reinforced concrete), fiber-reinforced concrete, fiber-reinforced plastic, etc. are suitable materials with the above load-bearing strength, and will be as light as possible. It can be formed and used. Note that any material may be used as long as it has the above load-bearing strength and a lighter weight can be obtained, and can be formed and used.

As the outer shape of the load support moving support base 9, an appropriate shape capable of stably supporting a load of a light structure or the like such as a cylindrical shape, a rectangular tube shape, a polygonal cylindrical shape, or the like is used. Although not shown, in order to adjust the height of the foundation upper end surface 10 of the load support moving support base 9, the height of the load support moving support base 9 is formed slightly lower than the original required height, By inserting and arranging the height adjusting sliding plate 21 so as to be attachable / detachable to the entire surface or a part thereof, the contact between the foundation upper end surface 10 of the load supporting moving placing base 9 and the lower rolling surface of the upper rolling plate 2 is achieved. The degree of contact can be easily adjusted.

In addition, the rolling follow-up moving cylinder ring 8 and the connecting member 12 and the load support moving placing base 9 can be formed integrally with the same material. Still further, by forming them integrally and dividing them into an appropriate number in the vertical direction to form a disassembly and assembly type using the connecting bolts 13, the convenience in arrangement and maintenance management is enhanced.

When the amount of horizontal displacement required by the seismic isolation sphere 1 is used for the radius of the seismic isolation sphere 1, the seismic isolation sphere 1 to be used is necessary at the time of rolling isolation from the entire outer periphery of the load support moving base 9. The upper rolling plate 2 and the lower rolling plate 3 have a rolling required plane whose radius is the sum of the horizontal displacement amount and the allowable over-rolling horizontal displacement amount of the seismic isolation ball 1. .

The in-situ guided elastic bar E will be described with reference to FIG. Note that the small black dots in the figure indicate the rubber-like elastic body 15.

The in-situ induced elastic elastic body E-1 shown in FIG. 2 (a) includes a plurality of round linear elastic bodies 14, such as a round linear steel spring body, various round fiber reinforced plastics or engineering plastics. A book is bundled to form a rod-shaped body. A single piece is also used.

An in-situ induced elastic rod-like body E-2 in FIG. 2 (c) is a rod-like body formed by combining a plurality of round linear elastic bodies 14 and rubber-like elastic bodies 15 made of the above materials. It is.

An in-situ induced elastic rod-like body E-3 shown in FIG. 2 (e) is composed of a plurality of round linear elastic bodies 14 and rubber-like elastic bodies 15 made of the above-described materials, and a tension coil spring 16 inside. Are combined to form a rod-shaped body.

The in-situ induced elastic rod-like body E is not necessarily limited to the above, and is an elastic body that does not expand and contract in the vertical direction and is flexible in the horizontal direction, and guides the seismic isolation sphere 1 to the original position. Any material can be used as a single body or a composite as long as it has a flexural strength and a restoring force to be restored.

The lower rolling plate 3 of the seismic isolation ball bearing device A having the above-described configuration is placed and fixed on the base plate 17, and a base material lower end 18 such as a structure is placed and fixed on the upper rolling plate 2. When used, since the upper pole height of the seismic isolation ball 1 and the height of the upper end surface 10 of the load support moving support base 9 are the same height, the base isolation ball 1 and the load support moving support base 9 are the building. Both of them share and support the load of light structures, etc., and the in-situ guided elastic restoring rod E exists in the guide cylinder hole 5 upright as a mandrel column, and is further seismically isolated. Since a part of the seismic isolation ball 1 falls into and comes into contact with the ball rolling transition start recess 7, it is possible to effectively prevent a light structure or the like from swinging due to an external force such as a strong wind.

Due to the horizontal displacement of the lower rolling plate 3 at the time of rolling isolation, the in-situ guided restoring elastic rod E also acts, so that the seismic isolation ball 1 is formed in a conical hole from the rolling transition starting recess hole 7. When climbing up the slope and climbing onto the upper surface of the lower rolling plate 3, the upper end surface 10 of the load support moving base 9 and the rolling surface of the upper rolling plate 2 are separated from each other, and the seismic isolation ball 1 is Effectively start rolling isolation with the load of light structures alone. Note that the load follower moving base 9 that has been separated from the load support is pushed by the rolling force of the seismic isolation ball 1 so that the rolling follow-up moving cylinder ring 8 is pushed in the entire rolling direction on the lower rolling plate 3. Follow and slide without load. At the end of the rolling seismic isolation, the seismic isolation ball 1 is guided by the restoring force of the in-situ guided restoring elastic rod E to be restored to the original position.

(Second Embodiment) If the seismic isolation ball bearing device B is described with reference to FIG. 3, it is made close to the outer peripheral edge side of the upper rolling plate 2 and the lower rolling plate 3 having a predetermined rolling range plane, A rigid support supporting base 19 made of a rigid body is erected so as to surround the outer periphery of the seismic isolation ball 1 with the base lower end face 11 fixed to the base board 17, and the base upper end face 10 of the load supporting fixing base 19 is A smooth base fixed base upper end sliding plate 20 made of a rigid body, which is a smooth surface and has a predetermined sliding plane width from the outer peripheral edge of the load support fixed base 19 on the upper end surface 10 of the load support fixed base 19, The lower surface height of the fixed foundation upper end sliding plate 20 is set to be the same as the lower surface height of the upper rolling plate 2 and is fixedly disposed below the lower end 18 of the base material. The lower surface is slidably contacted.

The predetermined ball rolling range plane is a radius of the base-isolated sphere 1 to be used, a horizontal displacement required for the base-isolated sphere 1 at the time of rolling isolation, and an allowable over-rolling horizontal displacement of the base-isolated sphere 1 The range in which the radius is the sum of the two is the ball rolling range plane. In addition, the predetermined sliding plane width is a sliding with a width obtained by adding an allowable over-rolling horizontal displacement amount of the seismic isolation ball 1 to a horizontal displacement amount required for the base isolation ball 1 at the time of the rolling isolation. The plane width.

The load support fixing base 19 is preferably formed of reinforced concrete so as to function equally as a cloth foundation of a normal building. Although not shown, in order to adjust the height of the foundation upper end surface 10 of the load support fixing base 19, the height of the load support fixing base 19 is formed slightly lower than the original required height, The height adjustment sliding plate 21 is detachably inserted and disposed on the entire surface or a part thereof, whereby the contact between the foundation upper end surface 10 of the load support fixing base 19 and the lower rolling surface of the upper rolling plate 2 is achieved. The degree can be easily adjusted.

In the base-isolated ball bearing device B having the above-described configuration, the height of the upper pole of the base-isolated ball 1 and the height of the base upper end surface 10 of the load-supporting fixing base 19 are the same in a normal state. The upper end surface 10 is in sliding contact with the lower surface of the fixed base upper end sliding plate 20, the seismic isolation ball 1 and the load support fixing base 19 function as a fabric foundation of the building, and both share the load of light structures and the like. In addition, an in-situ guided restoring elastic rod-like body E exists in the guide cylinder hole 5 in an upright manner as a mandrel column, and prevents the light structure or the like from swinging due to an external force such as a strong wind.

Due to the horizontal displacement of the lower rolling plate 3 at the time of rolling isolation, the in-situ guided elastic bar E also acts to cause the seismic isolation ball 1 to start rolling isolation and the load support fixing base 19. The base upper surface 10 of the base slides on the lower surface of the fixed base upper end sliding plate 20 and the lower surface of the upper rolling plate 2 to start the sliding isolation, and both the load of the light structure and the like are equally supported and synergized. It is an intermediate between rolling isolation and sliding isolation, and performs motion isolation with low frictional resistance. At the end of the rolling seismic isolation, the seismic isolation ball 1 is guided by the restoring force of the in-situ guided restoring elastic rod E to be restored to the original position.

(Third Embodiment) The seismic isolation ball bearing device C will be described with reference to FIG. 4. In the seismic isolation ball bearing device B of FIG. 3 of the second embodiment, the seismic isolation ball abutting on the upper surface of the lower rolling plate 3. A part of the bottom pole side of the seismic isolation ball 1 is cut and removed in a horizontal direction with an appropriate slight height around the guide cylinder hole 5 on the bottom pole side 1 of the base 1 to roll the base isolation ball 1 The transition starting plane 22 is formed, and the rolling transition starting plane 22 is brought into contact with the upper surface of the lower rolling plate 3 around the in-situ induction restoring elastic rod E having one end fixed to the upper surface of the lower rolling plate 3. The height 10 of the top end surface 10 of the load support fixing base 19 is made equal to the height of the upper pole of the seismic isolation ball 1 when it is cut off and brought into contact with the upper surface of the lower rolling plate 3. The end surface 10 is slidably brought into contact with the lower surface of the fixed base upper end sliding plate 20.

A part of an appropriate slight height is cut and removed in a horizontal direction around the guide cylinder hole 5 on the lower pole side of the base isolation ball 1. When the moving plate 3 starts horizontal displacement, and the rotation-inducing action of the in-situ guided restoring elastic rod-like body E rotates the base-isolating ball 1 so that the spherical portion of the base-isolating ball 1 hits the upper surface of the lower rolling plate 3. It is the minimum cut removal height that can start rolling in contact.

The base-isolated ball bearing device C having the above-described configuration is such that, in normal times, the base pole height of the base-isolated ball 1 and the base upper end surface 10 of the load support fixing base 19 are the same, The load support fixed base 19 functions as a fabric foundation of the building, both share and support the load of light structures, etc., and the in-situ guided restoring elastic rod-like body E stands upright as a mandrel column in the guide tube hole 5. Furthermore, since the rolling transition starting plane 22 is in contact with the lower rolling plate 3, the light structure or the like is prevented from swinging due to an external force such as a strong wind.

Due to the horizontal displacement of the lower rolling plate 3 at the time of rolling isolation, the in-situ guided restoring elastic rod E also acts to start the rolling isolation ball 1 and the rolling transition starting plane 22 is lowered. When the spherical portion of the seismic isolation ball 1 comes into contact with the upper surface of the lower rolling plate 3 and starts rolling isolation from the rolling plate 3, the upper end surface 10 of the load supporting fixed base 19 and the upper end of the fixed base are started. The lower surface of the sliding plate 20 and the lower surface of the upper rolling plate 2 are separated from each other, and the seismic isolation ball 1 bears the load of the light structure alone and effectively starts the rolling isolation.

(Fourth Embodiment) The seismic isolation ball bearing device F will be described with reference to FIG. 5 (a). A flat upper rolling plate 2 and a lower rolling plate sandwiching a seismic isolation ball 1 made of a single rigid body. 3, a hollow induction restoring body accommodating chamber 4 is formed in the seismic isolation sphere 1, and cylindrical guide tube holes are provided between the upper and lower poles of the seismic isolation ball 1 and the induction restoring body accommodation chamber 4. 5 is opened, and the other end side of the in-situ induction restoring elastic rod-like body E in which one end side is appropriately fixed to the upper rolling plate 2 and the lower rolling plate 3 with which the guide tube hole 5 abuts is connected to the guide tube. It passes through the hole 5 and reaches the induction restoring body accommodating chamber 4 to be freely arranged.

In the base-isolated ball bearing device F having the above-described configuration, when the base-isolated ball 1 is isolated from rolling, the in-situ guided restoring elastic rod E slides freely in the guide tube hole 5 and follows the rolling direction. Then, it is flexed in all directions outside the guide tube hole 5 to suppress and guide the excessive rolling of the seismic isolation ball 1 and to restore the base isolation ball 1 to its original position at the end of the rolling seismic isolation. Even if an external force such as a strong wind acts on a light structure or the like under normal conditions, the circular straight in-situ guided restoring elastic rod-like body E exists upright as a mandrel column in the guiding cylinder hole 5 and is a seismic isolation ball. Since 1 is restrained in a bowl shape, the seismic isolation ball 1 is prevented from rolling, and light structures and the like are prevented from swinging.

(Fifth Embodiment) The seismic isolation ball bearing device G will be described with reference to FIG. 5B. In the seismic isolation ball bearing device F of FIG. 5A of the fourth embodiment, the upper surface of the lower rolling plate 3 A part of the lower pole side of the seismic isolation sphere 1 is inserted from the upper surface of the lower rolling plate 3 around the in-situ guided elastic bar E with one end fixed to the center, and gently inclined at an appropriate slight depth A rolling transition start recess 7 of the base-isolated ball 1 having a conical shape is opened, and the guide cylinder hole 5 on the lower pole side of the base isolation ball 1 is brought into contact with the rolling transition start recess 7 Make you fall.

In the base-isolated ball bearing device G having the above-described configuration, the in-situ induction-recovered elastic rod-like body E exists in the guide tube hole 5 upright like a mandrel column in a normal state, and further, the base-isolated ball rolling transition activation depression Since a part of the seismic isolation ball 1 falls into and comes into contact with the hole 7, it is possible to effectively prevent a light structure or the like from swinging due to an external force such as a strong wind.

Due to the horizontal displacement of the lower rolling plate 3 at the time of rolling isolation, the in-situ guided restoring elastic rod E also acts, so that the seismic isolation ball 1 is formed in a conical hole from the rolling transition starting recess hole 7. Climbing up the slope, climbing on the upper surface of the lower rolling plate 3 and starting the rolling isolation, the in situ guided restoring elastic rod E restores the seismic isolation ball 1 to the original position at the end of the rolling isolation.

(Sixth Embodiment) The seismic isolation ball bearing device H will be described with reference to FIG. 5 (c). In the seismic isolation ball bearing device F of FIG. 5 (a) of the fourth embodiment, the upper surface of the lower rolling plate 3 A part of the lower pole side of the seismic isolation ball 1 is cut and removed in a horizontal direction with an appropriate slight height around the guide cylinder hole 5 on the lower pole side of the seismic isolation ball 1 in contact with The rolling transition starting plane 22 of the seismic ball 1 is formed, and the rolling transition starting plane 22 is formed on the lower rolling plate 3 with the in-situ guided elastic bar E having one end fixed to the upper surface of the lower rolling plate 3 as the center. Contact the top surface.

In the base-isolated ball bearing device H having the above-described configuration, the in-situ guided restoring elastic rod-like body E exists upright as a mandrel column in the guide tube hole 5 in a normal state, and the rolling transition starting plane 22 is further lowered. Since it is in contact with the rolling plate 3, the light structure or the like is prevented from swinging due to an external force such as a strong wind.

Due to the horizontal displacement of the lower rolling plate 3 at the time of rolling isolation, the in-situ guided restoring elastic rod E also acts to start the rolling isolation ball 1 and the rolling transition starting plane 22 is lowered. The rolling ball 3 is separated from the rolling plate 3 and subsequently the spherical portion of the seismic isolation ball 1 comes into contact with the upper surface of the lower rolling plate 3 to start the rolling isolation. E restores the seismic isolation ball 1 to its original position.

(Seventh Embodiment) The seismic isolation ball bearing device K will be described with reference to FIG. 6A. In the seismic isolation ball bearing device F of FIG. A cylindrical rolling follow-up moving cylinder ring 8 of an appropriate height made of a rigid body is disposed in a free manner in contact with the circumference of the diameter circle, and further surrounds the horizontal outer periphery of the follow-up moving cylinder ring 8 to provide a rigid body. An appropriate cylinder-shaped load supporting and moving base 9 is formed between the upper rolling plate 2 and the lower rolling plate 3 with the same height as the diameter of the seismic isolation ball 1 between the upper rolling plate 2 and the lower rolling plate 2. The lower end surface of the rolling plate 3 is provided as a smooth surface in sliding contact with the upper rolling plate 2 and the lower rolling plate 3, and further follows the inner cylindrical wall of the load supporting moving support base 9. Between the outer cylinder wall of the moving cylinder ring 8, the in-situ guided restoring elastic rod-like body E was kept in contact with the load-supporting movable placing base 9 during the rolling isolation of the seismic isolation sphere 1. Connecting material 12 Connecting fixing both be disposed.

In the base-isolated ball bearing device K having the above-described configuration, the base pole height of the base-isolated ball 1 and the base top surface 10 height of the load-supporting moving base 9 are the same in normal times. The load support moving support base 9 functions as an independent foundation of the building, both share and support the load of light structures, etc., and the in-situ guided restoring elastic bar E stands upright as a mandrel column in the guide tube hole 5 Therefore, it is possible to effectively prevent a light structure or the like from swinging due to an external force such as a strong wind.

At the time of rolling isolation, the base-isolated ball 1 is base-isolated, and the base supporting the load is moved in the same direction via the rolling follow-up moving ring 8 to the base-isolating ball 1 during the base isolation operation. 9 is pushed, the load support moving support base 9 slides on the lower rolling plate 3, and the load of the light structure and the like is shared and supported by both sides. This is an intermediate, low-friction motion-isolating motion. At the end of rolling isolation, the in-situ guided elastic bar E restores the seismic isolation ball 1 to its original position.

(Eighth Embodiment) The seismic isolation ball bearing device L will be described with reference to FIG. 6B. In the seismic isolation ball bearing device H in FIG. A cylindrical rolling follow-up moving cylinder ring 8 of an appropriate height made of a rigid body is disposed in a free manner in contact with the circumference of the diameter circle, and further surrounds the horizontal outer periphery of the follow-up moving cylinder ring 8 to provide a rigid body. An appropriate cylindrical load supporting / moving support base 9 is cut and removed between the upper rolling plate 2 and the lower rolling plate 3 at the upper end surface 10 height of the load supporting moving mounting base 9. The rolling upper start surface 22 of the base 9 of the load support moving base 9 is turned up as a smooth surface with the same height as the upper pole height of the seismic isolation ball 1 when the rolling transition starting plane 22 is brought into contact with the upper surface of the lower rolling plate 3. It is arranged in sliding contact with the moving plate 2, and further, the rolling isolation of the seismic isolation ball 1 is between the inner cylindrical wall of the load supporting moving base 9 and the outer cylindrical wall of the following moving cylindrical ring 8. At the time of an earthquake The in-situ guided restoring elastic rod-like body E is provided with a contact prevention interval width which does not contact the load support moving placing base 9 and is connected and fixed together.

Since the seismic isolation ball bearing device L having the above-described configuration normally has the upper pole point height of the seismic isolation ball 1 and the height of the base upper end surface 10 of the load supporting moving base 9 equal to each other, The load support moving support base 9 functions as an independent foundation of the building, both share and support the load of light structures, etc., and the in-situ guided restoring elastic bar E stands upright as a mandrel column in the guide tube hole 5 Further, since the rolling transition starting plane 22 is in contact with the lower rolling plate 3, the light structure or the like is prevented from swinging due to external force such as strong wind.

At the time of rolling isolation, due to the horizontal displacement of the lower rolling plate 3, the in-situ induced restoring elastic rod E also acts to cause the seismic isolation ball 1 to start rolling, and the rolling transition starting plane 22. Is separated from the lower rolling plate 3 and subsequently the spherical portion of the seismic isolation ball 1 comes into contact with the upper surface of the lower rolling plate 3 to start the rolling isolation, and further, the upper end surface of the load supporting moving placing base 9 10 and the lower surface of the upper rolling plate 2 are separated from each other, and the seismic isolation ball 1 bears a load such as a light structure alone and starts rolling isolation. Note that the load support moving base 9 is pushed by the rolling force of the seismic isolation ball 1 and slides on the lower rolling plate 3 with no load following the entire rolling direction. At the end of rolling isolation, the in-situ guided elastic bar E restores the seismic isolation ball 1 to its original position.

(Ninth Embodiment) The seismic isolation ball bearing device M will be described with reference to FIG. 7. In the seismic isolation ball bearing device G of FIG. 5 (b) of the fifth embodiment, a top having a predetermined rolling range plane is shown. The load supporting and fixing base 19 made of a rigid body and the base lower end surface 11 of the base base plate 17 are disposed so as to surround the outer periphery of the seismic isolation ball 1 in the vicinity of the outer peripheral edge of the rolling plate 2 and the lower rolling plate 3. The upper end surface 10 of the load support fixing base 19 is a smooth surface, and a predetermined sliding plane width is formed on the upper end surface 10 of the load support fixing base 19 from the outer peripheral edge of the load support fixing base 19. The fixed base upper end sliding plate 20 having a smooth surface made of a rigid body is fixed and disposed below the lower end 18 of the base material with the lower surface height of the fixed base upper end sliding plate 20 being the same as the lower surface height of the upper rolling plate 2. Then, the upper end surface 10 of the load supporting fixed base 19 is brought into sliding contact with the lower surface of the fixed base upper end sliding plate 20.

In the base-isolated ball bearing device M having the above-described configuration, the base top surface 10 is fixed when the upper pole height of the base-isolated ball 1 and the base top surface 10 of the load support fixing base 19 are the same height in normal times. Since it is in contact with the lower surface of the base top sliding plate 20, a part of the seismic isolation ball 1 is further in contact with the seismic isolation ball rolling transition activation recess 7, The load-supporting fixed base 19 functions as a fabric foundation of the building, both share and support the load of light structures, etc., and the in-situ guided restoring elastic rod-like body E stands upright as a mandrel column in the guide tube hole 5 And prevents rocking of a light structure or the like due to an external force such as a strong wind.

At the time of rolling isolation, by the action of the horizontal displacement of the lower rolling plate 3 at the time of rolling isolation, the in-situ guided restoring elastic rod E also acts, so that the seismic isolation ball 1 is in the rolling transition start hollow 7 When climbing up the conical hole slope from the inside and climbing on the upper surface of the lower rolling plate 3 and starting the rolling isolation, the upper end surface 10 of the load supporting fixed base 19, the lower surface of the fixed upper end sliding plate 20 and the upper rolling plate 2 The lower surface is separated and the seismic isolation ball 1 bears the load of a light structure or the like alone and effectively starts rolling isolation. At the end of rolling isolation, the in-situ guided elastic bar E restores the seismic isolation ball 1 to its original position.

Based on FIGS. 8 (a) and 8 (b), an arrangement plan view of the seismic isolation ball bearing device including the load support fixing base 19 and an arrangement plane at the time of displacement will be described. In the figure, the inside of the hatched portion of the one-dot chain line indicates the plane range of the fixed base upper end sliding plate 20. The seismic isolation ball bearing device B of FIG. 3 will be described as the seismic isolation ball bearing device provided with the load support fixing base 19.

A plurality of seismic isolation ball bearing devices B are arranged at the load supporting points along the outer wall line 23 between the lower end 18 of the base material and the base plate 17 inside the outer wall line 23 of a light structure or the like. Instead of providing the support fixing base 19, the load support fixing base 19 is continuously provided so as to be close to the inside of the outer wall line 23. Further, by providing the load support fixing base 19 at an appropriate load support point below the lower end 18 of the base material, it is equivalent to the case of providing individually.

The fixed base upper end sliding plate 20 of a rigid smooth surface having a predetermined sliding plane width from the outer peripheral edge of the load supporting fixed base 19 on the upper end surface 10 of the load supporting fixed base 19. Is disposed.

With the above-described configuration, the base upper end surface 10 is the lower surface of the fixed base upper end sliding plate 20 because the upper pole height of the base isolation ball 1 and the base upper end surface 10 height of the load supporting fixed base 19 are the same height in normal times. The base-isolated ball 1 and the load support fixing base 19 function as a fabric foundation of the building, both share and support the load of light structures, etc., and further, the in-situ induced elastic restoration in the guide tube hole 5 The rod-like body E exists upright as a mandrel and prevents the light structure or the like from swinging due to an external force such as a strong wind.

Due to the horizontal displacement of the lower rolling plate 3 at the time of rolling isolation, the in-situ guided elastic bar E also acts to cause the seismic isolation ball 1 to start rolling isolation and the load support fixing base 19. The base upper surface 10 of the base slides on the lower surface of the fixed base upper end sliding plate 20 and the lower surface of the upper rolling plate 2 to start the sliding isolation, and both the load of the light structure and the like are equally supported and synergized. It is an intermediate between rolling isolation and sliding isolation, and performs motion isolation with low frictional resistance. At the end of the rolling seismic isolation, the seismic isolation ball 1 is guided by the restoring force of the in-situ guided restoring elastic rod E to be restored to the original position.

In addition, it is not limited to embodiment which arrange | positions the seismic isolation ball support apparatus B mentioned above, For example, the seismic isolation ball support apparatus M of FIG. The ball bearing device M and the seismic isolation ball bearing device A of FIG. 1 of the first embodiment can be used in combination. Any seismic isolation ball bearing device of any of the embodiments can be disposed and used.

A A base-isolated ball bearing device according to the first embodiment.
B The seismic isolation ball bearing device according to the second embodiment.
C The seismic isolation ball bearing device according to the third embodiment.
E In-situ induced elastic bar.
E-1 In-situ guided elastic bar.
E-2 In-situ guided elastic bar.
E-3 In-situ guided elastic bar.
F Seismic isolation ball bearing device according to Embodiment 4.
G The seismic isolation ball bearing device according to the fifth embodiment.
H Seismic isolation ball bearing device according to Embodiment 6.
K the seismic isolation ball bearing device according to the seventh embodiment.
L Seismic isolation ball bearing device according to Embodiment 8.
M The seismic isolation ball bearing device according to Embodiment 9.
1 Seismic isolation ball.
2 Upper rolling plate.
3 Lower rolling plate.
4 Guidance restoration body accommodation room.
5 Guide tube hole.
6 Stopper stopper.
7 Seismic isolation ball rolling transition activation depression.
8 Rolling follow-up moving cylinder ring.
9 Load-carrying moving base.
10 Upper end surface of the foundation.
11 Lower end surface of the foundation.
12 Connecting material.
13 Connecting bolt.
14 Round linear elastic body.
15 Rubber-like elastic body.
16 Tension coil spring.
17 Foundation board.
18 Bottom of base material for light structures.
19 Load-supporting fixed foundation.
20 Fixed base top sliding plate.
21 Height-adjustable sliding plate.
22 Rolling transition start plane.
23 External wall lines for light structures.

Claims (8)

A base-isolated sphere made of a single rigid body is disposed between a flat upper rolling plate and a lower rolling plate, and a hollow induction restoring body accommodation chamber is formed in the seismic isolation ball, An in-situ position where guide cylinder holes are respectively opened between the upper and lower poles of the seismic isolation ball and the induction restoring body housing chamber, and one end side is appropriately fixed to the upper and lower rolling plates in contact with the guide cylinder holes. The other end of the induction restoring elastic rod is passed through the guide tube hole and reaches the induction restoring member housing chamber, and the in-situ induction restoring elastic rod is arranged freely. A seismic isolation ball bearing device.   The seismic isolation ball bearing device according to claim 1, wherein the in-situ guided elastic bar is a round linear elastic body. 2. The seismic isolation ball bearing device according to claim 1, wherein the in-situ induced elastic rod-like body is formed by combining a plurality of round linear elastic bodies and rubber-like elastic bodies. 2. The in-situ induction restoring elastic rod-like body is formed by appropriately combining a plurality of round linear elastic bodies and tension coil springs, and further combining a rubber-like elastic body. Seismic isolation ball bearing device. A cylindrical rolling follow-up moving cylinder ring of an appropriate height made of a rigid body is arranged freely in contact with the circumferential edge of the horizontal diameter of the seismic isolation sphere, and the horizontal outer periphery of the follow-up moving cylinder ring An appropriate cylinder-shaped load support moving support base made of a rigid body is placed between the upper rolling plate and the lower rolling plate with the same height as the diameter of the seismic isolation ball between the upper and lower sides. An end surface is provided as a smooth surface in sliding contact with the upper and lower rolling plates, and further between the inner cylindrical wall of the load support moving base and the outer cylindrical wall of the follower moving cylindrical ring. The connecting material is disposed with an appropriate contact prevention interval width, and both the load supporting moving support base and the follower moving cylindrical ring are appropriately fixed. 4. The seismic isolation ball bearing device according to any one of 4 items. The upper rolling plate and the lower rolling plate have a predetermined ball rolling range plane, and are close to the outer peripheral side of the upper rolling plate and the lower rolling plate, and are supported by a rigid body. A rigid body in which a fixed foundation is erected with its lower end surface fixed on a foundation board, and a predetermined sliding plane width is retained on the upper end surface of the load support fixed foundation from the outer peripheral edge of the load support fixed foundation. A fixed base upper end sliding plate having a smooth surface, the lower surface of the fixed base upper end sliding plate being set at the same height as the lower surface of the upper rolling plate, and fixed under the lower base material, and the load supporting fixed base 5. The seismic isolation ball bearing device according to claim 1, wherein the upper end surface of the base is slidably brought into contact with the lower surface of the fixed base upper end sliding plate. A part of the lower pole side of the seismic isolation sphere is inserted from the upper surface of the lower rolling plate around the lower surface of the lower rolling plate, with the in-situ guided elastic member having one end fixed to the upper surface of the lower rolling plate as a center. Then, a rolling transition starting recess hole of the base-isolated ball having a gently inclined surface is opened, and the guide cylinder hole on the lower pole side of the base isolation ball is formed in the rolling transition starting recess hole. The top pole height of the seismic isolation ball when the load support moving support foundation or the load support fixed foundation is dropped into the rolling transition starting depression hole. The seismic isolation ball bearing device according to claim 5 or 6, wherein the seismic isolation ball bearing device has the same height as the above. Centering on the guide cylinder hole on the lower pole side of the base isolation ball that is in contact with the upper surface of the lower rolling plate, a part of the lower pole side of the base isolation ball is used with an appropriate slight height in the horizontal direction. The rolling transition starting plane of the seismic isolation ball is formed by cutting and removing, and the rolling transition starting plane is centered on the in-situ guided restoring elastic rod-like body whose one end is fixed to the upper surface of the lower rolling plate. The seismic isolation sphere when it is brought into contact with the upper surface of the lower rolling plate and the height of the upper end surface of the load supporting moving support base or the load supporting fixed base is cut off and brought into contact with the upper surface of the lower rolling plate The seismic isolation ball bearing device according to claim 5 or 6, characterized in that it has the same height as the upper pole height.

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