JP5004374B1 - Sliding, steel ball compound seismic isolation device. - Google Patents

Abstract

【Task】
Conventional seismic isolation devices using multiple spheres have no means to restrain the sphere, and when a vertical external force is applied, the sphere dissipates out of the rolling plate and cannot be isolated, and when a wind or other action is applied during normal times, the sphere There is a difficult point to swing. A slip and steel ball composite seismic isolation device is provided that does not dissipate the ball and does not swing during normal times.
[Solution]
A permanent magnet mounting chamber 3 is formed on the upper surface side of the upper rolling disk base 2 made of a rigid non-magnetic material having a predetermined thickness, and a yoke using a value twice as large as the diameter of the steel ball 9 to be used as an interval. A square bar-shaped magnet 11a provided with 12a is placed over the entire surface, and a circular annular chamber wall plate 6 is provided outside the entire circumference of the disk base 2 to form a steel ball retaining chamber / moving path 5, and further the wall plate 6 An annular slide base 14 with a sliding plate 15 is erected on the upper surface of the lower rolling plate 1 on the outside, and the entire upper surface of the lower rolling plate 1 facing the upper rolling surface 7 in a normal state is excised with a slight depth. Thus, a steel ball non-contact surface 18 is formed, and an appropriate number of steel balls 9 are adsorbed under the upper rolling surface 7.
[Selection] Figure 1

Description

The present invention relates to a seismic isolation bearing device used for light structures, article stands, equipment, and the like, and more specifically, by using an upper rolling disk base having a predetermined thickness of a nonmagnetic material made of a rigid body. Due to its rigid body, the dynamic disk base supports the upper load without using any means, and the magnetic permeability of the non-magnetic upper rolling disk base having a predetermined thickness is small, and the upper surface of the upper rolling disk base is low. Permanent magnets installed on the surface surely attract the steel balls below the upper rolling surface evenly, and the steel balls dissipate below the upper rolling plate surface even when vertical external forces such as vertical earthquake motions are applied. In addition, it is possible to prevent rolling isolation from becoming impossible, and furthermore, using a sliding plate, sliding with a low frictional resistance, steel ball composite isolation bearing device, and further, lower rolling with the upper rolling surface facing in normal times By forming a steel ball non-contact surface on the top surface of the plate, the steel ball does not support the seismic isolation object in normal times, and external forces such as wind act. May prevent the swinging of Himen Shinbutsu, slip relates steel balls composite seismic isolation bearing device.

The conventional seismic isolation device using a plurality of rolling balls has a great feature that a plurality of rolling balls support multi-point load of the seismic isolation object. Therefore, if an external force such as vertical motion is applied, the rolling ball will dissipate out of the vertical rolling plate, making rolling isolation impossible or normal. Sometimes, when an external force such as wind acts, the rolling ball easily rolls and the seismic isolation object swings.

Conventionally, a vibration isolating support device that circulates a steel ball 14 between an upper portion of a pressure receiving table 11 and a lower table 13 in a guide cover 12 is known. (For example, see Patent Document 1)

In the above, since a large number of balls are not required and a limited number of balls are used, and the steel ball 14 rolls and moves on the upper surface of the pressure receiving table 11, the steel ball 14 circulates smoothly and is isolated. It has.

Further, in the prior art, the outer periphery of the lower surface of the disk-shaped upper plate member 12 is formed so as to be inclined slightly thinner than the central portion, and the ring shape is formed between the side members 14 arranged in a ring shape around the upper plate member 12. A ball slider is known in which a plurality of spheres 18 are formed between the lower surface of the upper plate member 12 and the ring-shaped space 16. (For example, see Patent Document 2)

In the above, since it is the ring-shaped space portion 16 having an inclination angle within the range of the thickness of the upper plate member 12, a ball slider having a low height is obtained, and the entire surface of the upper plate member 12 supports and supports heavy loads. It has the feature to do.

In addition, as a conventional technique using a means for solving the difficulty that a steel ball is dissipated out of the upper rolling surface when a vertical motion force due to vertical earthquake motion or the like acts on the conventional technology, the lower rolling surface 1b is replaced with the steel rolling surface 1e. Alternatively, the non-magnetic rolling surface 1g is formed, the upper rolling surface 1a is formed with the upper magnetic pole rolling surface 1c composed of the magnetic pole 3 of the permanent magnet 26 and the yoke 27, and the rolling steel ball 2a is interposed therebetween. The rolling ball bearing device A (claims 3 and 4) and the pressure receiving surface 35 of the circular rolling base 6 are formed with a magnetic pole pressure receiving surface 8 composed of the magnetic pole 3 of the permanent magnet 26 and the yoke 27. A rolling ball support device B (claim 6) is known. (See Patent Document 3)

In the above-described rolling ball bearing devices A and B, the upper rolling surface 1a is formed as the upper magnetic pole rolling surface 1c or the magnetic pole pressure receiving surface 8, so that the rolling steel ball 2a can be applied even when vertical vertical motion due to vertical earthquake motion or the like acts. Is always adsorbed and has the feature that there is no risk of dissipating outside the upper rolling surface 1a.

In addition, the conventional technology solves the problem that the steel ball is dissipated out of the upper rolling surface when the vertical force is applied due to vertical earthquake motion, etc., and the problem that the normal ball is easily swung by an external force such as wind. As a conventional technique using both means, a plurality of seismic isolation balls 7 are stored in a cylindrical support column 10 having an upper sliding and rolling plate 4 at the lower end, and on the lower rolling plate 2 during earthquake motion, There is known a seismic isolation bearing device that supplies the seismic isolation ball 7 with a seismic force. (See Patent Document 4)

In the above-mentioned seismic isolation bearing device, a number of seismic isolation spheres 7 are dropped and supplied by using the seismic power, and the features that do not require the means for restraining the seismic isolation sphere 7 and the upsliding and rolling plate 4 are projected. A plurality of cylindrical lower support columns 8 having the same height as the diameter of the seismic isolation sphere 7 are disposed and fixed on the lower rolling plate 2 to be removed, and the upper surface of the lower rolling plate 2 is removed except for the lower support column 8. By cutting up to a depth where the lower pole of the seismic isolation ball 7 does not contact, the lower surface of the upper sliding and rolling plate 4 abuts against the lower support column 8 at normal times, the seismic isolation ball 7 does not support the load, wind, etc. The light structure does not oscillate even when subjected to external force.

Hei 1-222653. JP 2001-106311 A. JP 2000-304088 A. Japanese Patent No. 4510932.

In Patent Document 1, since the load is supported through the central support column 21, there is a difficulty that the load is concentrated on the central support column 21. There is a problem that it is likely to dissipate outside the lower surface of the glass, and further, there is a problem that it easily swings by an external force such as wind during normal times.

In Patent Document 2, there is a problem that the sphere 18 may be dissipated outside the lower surface of the upper plate member 12 when a vertical motion force due to a vertical earthquake motion or the like is applied, and further, it is difficult to swing easily by an external force such as wind in normal times. Furthermore, when the ball slider moves, a plurality of spheres 18 are simultaneously transferred in parallel into the ring-shaped space portion 16 of the small space at the same height as the sphere 18, and the inner peripheral edge of the side member 14. Since the spheres 18 try to move individually in the left and right directions, the spheres 18 may collide, the spheres 18 may not move, and may stagnate in the space 16. It is thought that the slider may become a sliding support.

In Patent Document 3, since both the rolling ball support devices A and B are configured to bear the upper load by the yoke 27, a special load-bearing yoke 27 is required, and between the yokes 27 of different polarities. By interposing the non-magnetic insulating material 31 between the magnetic poles, the entire surface of the upper magnetic pole rolling surface 1c or the magnetic pole pressure receiving surface 8 is connected so that the plurality of rolling steel balls 2a can be smoothly seismically isolated without any hindrance. It is not easy to form it firmly in a shape, and it requires high-level assembly manufacturing technology, and therefore requires high production costs.

Further, the rolling ball support devices A and B have a difficulty that they can be easily swung by an external force such as wind during normal times.

In Patent Document 4, it is necessary to store a large number of seismic isolation spheres 7 in response to a plurality of seismic motions including aftershocks, and this has the uneconomical effect of increasing the cost of seismic isolation bearing devices. Yes.

Furthermore, it is necessary to dispose and fix a plurality of cylindrical lower support pillars 8 on the lower rolling plate 2, which has the disadvantage of becoming an expensive seismic isolation bearing device.

In view of the above-described problems of the prior art, the present invention develops the features of Patent Documents 3 and 4 in order to eliminate the difficulty, and has an upper rolling disk having a predetermined thickness of a non-magnetic material made of a rigid body. By using the platform, the upper rolling disk platform supports the upper load without using any means due to its rigid body, and the magnetic permeability of the upper rolling disk platform having a predetermined plate thickness is A small, permanent magnet arranged on the upper surface of the upper rolling disk base ensures that the steel ball below the upper rolling surface is evenly attracted, so that the steel ball is It can be prevented that it is dissipated below the surface of the rolling plate to make it impossible to make a seismic isolation, and sliding friction can be achieved by arranging an annular slide body along the outer circumference of the upper rolling disc base. An intermediate friction coefficient between the coefficient of friction and the rolling friction coefficient. By forming a non-contact surface of the steel ball on the upper surface of the lower rolling plate, the steel ball does not support the seismic isolation object at normal times and prevents the seismic isolation object from swinging even when an external force such as wind acts on it. An object of the present invention is to provide an easy-to-maintain, easy-to-maintain, low-cost sliding / steel ball composite seismic isolation bearing device.

In order to achieve the above-mentioned object of the present invention, a first solution is to provide an upper magnetic pole rolling surface in a rolling ball bearing device having an upper magnetic rolling surface made of a permanent magnet and a yoke magnetic pole. Instead of using the upper and lower rolling discs, an upper and lower rolling disc base made of a rigid non-magnetic material having a predetermined thickness is disposed opposite to the upper surface of the lower rolling plate, and the upper surface of the disc base is arranged. A cylindrical wall body of an appropriate height is provided integrally with the disk base on the entire circumference of the disk base so as to form a permanent magnet mounting chamber having a predetermined diameter on the side, and the entire circular wall of the cylindrical wall body is provided. A circular ring-shaped chamber wall plate that forms a steel ball retaining chamber and a moving path with an appropriate inner volume that curves in an appropriate bowl shape from the entire circumferential position with an appropriate interval from outside the periphery to the lower inner direction, The bottom side of the lower end of the rigid bowl is cut into a circular shape and arranged as a round annular chamber wall plate, and the lower surface of the upper rolling disk base is the upper rolling surface. A steel ball moving-in / out sloped ceiling surface is formed by cutting the upper rolling disc base into an annular shape with an appropriate inclination angle at an appropriate inclination angle toward the center below the upper rolling surface from the peripheral edge of the entire circle. A suitable number of steel balls are arranged between the upper rolling surface and the lower rolling plate upper surface, and the lower end of the round annular chamber wall plate is transferred to the entire tip side of the circular opening end. Extend to the upper surface of the lower rolling plate below the entrance-tilt ceiling surface, arrange an appropriate number of steel balls in the steel ball retaining chamber / moving path, and install a permanent magnet on the side in the permanent magnet mounting chamber. A flat permanent magnet with a predetermined width at an appropriate position using the same value as the value of the diameter of the steel ball used under the upper rolling surface for the width value between the outer surfaces of both yokes. A plurality of non-magnetic upper load-supporting intermediate wall plates are placed on the entire surface with the same height as the yoke, and further, from the outer peripheral edge of the full circle annular chamber wall plate. All circumferences at appropriate intervals A rigid annular slide base with an appropriate width is placed on the lower side of the installation, and an appropriate slide plate made of a resin plate or the like having a low sliding friction coefficient and pressure resistance is attached to the lower end. An upper load support plate made of a non-magnetic material is arranged on the permanent magnet in the permanent magnet placement chamber with the upper surface of the rolling plate aligned with the height of the cylindrical wall body. A mounting plate is disposed on the upper end side of the load support plate and the cylindrical wall body, and the upper end side of the cylindrical wall body, the circular annular chamber wall plate, and the annular slide base is screwed to the mounting plate. This is a structure of a sliding and steel ball compound seismic isolation device.

By using an upper rolling disk base made of a rigid body instead of using the upper magnetic pole rolling surface, the upper rolling disk base will naturally receive the upper load without using any means, and the upper load will be increased by the rigid body. Can be stably dispersed.

By using a rigid upper rolling disk base made of a non-magnetic material having a predetermined thickness, the magnetic permeability of the upper rolling base made of a non-magnetic material is small, and the magnetic field lines of the permanent magnet are on the upper rolling surface. A plurality of lower steel balls can be adsorbed.

The width between the outer surfaces of both yokes of an appropriate planar permanent magnet is set to the same value as twice the diameter of the steel ball used under the upper rolling surface. By arranging a plurality of permanent magnets on the entire surface and placing them in contact with each other, when the steel balls below the upper rolling surface are flat and have the highest density in the hexagonal packing arrangement, all the steel balls The attractive force of the permanent magnet acts efficiently. Therefore, even if a steel ball exists in any position below the upper rolling surface, it can be adsorbed uniformly.

In addition, the predetermined plate thickness of the upper rolling disk base made of a non-magnetic material means that the interval between both yokes of the permanent magnet is from the yoke magnetic poles having a width value equal to twice the diameter of the steel ball used. The magnetic field lines appearing radially are plate thicknesses within a range in which a magnetic field line density capable of passing through the non-magnetic material and reliably adsorbing the steel balls can be obtained.

A plurality of steel balls arranged under the upper rolling surface by using a value equal to twice the diameter of the steel ball used under the upper rolling surface for the width value between the outer surfaces of both yokes. Can be surely adsorbed even if the steel ball enters the upper rolling surface from inside the trapezoidal steel ball retaining chamber / moving path, even under the upper rolling surface. Even if the vertical movement external force is applied and the upper rolling surface and the lower rolling plate surface are separated from each other, the steel ball is surely adsorbed under the upper rolling surface and there is no risk of losing the rolling seismic isolation function. .

Further, the permanent magnet mounting chamber having a predetermined diameter is a plurality of permanent magnets having yokes on both sides capable of adsorbing the number of steel balls required under the upper rolling surface, It is a diameter that can accommodate the upper load supporting intermediate wall plate having the same width as the permanent magnet.

The appropriate number of the plurality of steel balls disposed between the upper rolling surface and the lower rolling plate upper surface is an appropriate area within an area of about 70% to 100% of the area of the upper rolling surface. It is the number of spheres that are arranged with high honey.

By extending the entire tip of the circular opening end to the upper surface of the lower rolling plate below the steel ball transfer-in / out inclined ceiling surface, it was placed under the upper rolling surface during earthquake motion. The steel ball rolls and adsorbs to the steel ball moving-in / out inclined ceiling surface in the direction of seismic motion, and into the bowl-shaped steel ball stopping room / travel path along the circular opening end at the lower end of the wall plate of the circular ring chamber Move in.

Appropriate internal volume in the bowl-shaped steel ball stopping chamber / movement path is an internal volume that can accommodate all or a majority of the steel balls arranged below the upper rolling surface, and is transferred from below the upper rolling surface during earthquake motion. A part of the steel balls move in the bowl-shaped steel ball stop room / travel path and move below the upper rolling surface, and the remaining steel balls temporarily stop in the bowl-shaped steel ball stop room / travel path. Then, according to the amplitude of the ground motion from the mountain to the valley, it re-introduces below the upper rolling surface with the inbound path as the return path. Therefore, the steel ball can continue the rolling isolation without any trouble.

剛 A rigid annular slide base with an appropriate width from the entire circumferential position downward with an appropriate distance from the outer peripheral edge of the circular annular chamber wall plate. By attaching an appropriate sliding plate made of a resin plate having pressure resistance strength and abutting and standing on the upper surface of the lower rolling plate, the sliding friction coefficient of the sliding bearing and the rolling bearing of the steel ball A slip and steel ball composite seismic isolation device with a friction coefficient intermediate to the rolling friction coefficient can be obtained.

As an appropriate sliding plate, an annular plate or a circular plate is used for the shape, and the load ratio between the sliding support and the rolling support of the steel ball is changed by adjusting the width or number as appropriate. Can do.

The second solution to achieve the above object of the present invention is to cut the entire upper surface of the lower rolling plate opposed to the upper rolling surface to a slight depth to form a steel ball non-contact surface in normal times. This is the configuration of the sliding and steel ball compound seismic isolation bearing device as the first solution means.

By forming the entire upper surface of the lower rolling plate facing the upper rolling surface as a non-contact surface of the steel ball in normal times, the lower pole side of the steel ball adsorbed under the upper rolling surface in the normal state is the lower rolling plate. Does not touch the top surface and does not support the seismic isolation load. During normal times, the sliding plate of the annular slide base supports the entire seismic isolation load. Therefore, even if an external force such as wind acts in normal times, the steel ball does not roll and the seismic isolation object swings. do not do.

The third solution to achieve the above object of the present invention is to leave the lower rolling plate upper surface of a suitable circular area at the center side among the upper surface of the lower rolling plate facing the upper rolling surface in normal times, The structure of the sliding and steel ball composite seismic isolation device is the first solution means in which the upper surface of the remaining lower rolling plate is cut to a slight depth to form an annular steel ball non-contact surface.

Of the upper surface of the lower rolling plate facing the upper rolling surface in normal times, by leaving the upper surface of the lower rolling plate in an appropriate circular area at the center side, a part of the steel balls adsorbed under the upper rolling surface Along with the sliding plate, the seismic isolation load is shared and supported during normal times.

Sliding friction resistance at the start of seismic motion can be reduced by appropriately increasing the circular area within a range in which the steel ball does not roll even when an external force such as wind acts in normal times. The sliding frictional resistance at the start of earthquake motion can be increased or decreased by appropriately increasing or decreasing the circular area.

By using the upper rolling disk base made of a rigid non-magnetic material having a predetermined thickness, it is possible to support the dispersion of the upper load by the rigid material without any means, and to support the dispersion stably. The magnetic permeability of the upper rolling disk base made of a non-magnetic material is small, and further, the upper surface side of the disk base between the outer surfaces of the two yokes of the permanent magnet placed in contact with the permanent magnet mounting chamber. By using the same value for the width value as twice the diameter of the steel ball used below the upper rolling surface, the magnetic field lines of the permanent magnet ensure that the steel balls below the upper rolling surface are evenly distributed. Can be adsorbed.

By setting the inner volume of the bowl-shaped steel ball retaining chamber / moving path that can store all or a majority of the steel balls adsorbed under the upper rolling surface, some of the steel balls that move from below the upper rolling surface during earthquake motion Moves in the bowl-shaped steel ball stopping room / movement path and moves under the upper rolling surface, and the remaining steel balls temporarily stop in the bowl-shaped steel ball holding room / movement path, According to the amplitude to the valley, re-introduce below the upper rolling surface with the inbound path as the return path. Therefore, the steel ball can continue the rolling isolation without any trouble.

剛 A rigid annular slide base with an appropriate width from the entire circumferential position downward with an appropriate distance from the outer peripheral edge of the circular annular chamber wall plate. By attaching an appropriate sliding plate made of a resin plate having pressure resistance strength and abutting and standing on the upper surface of the lower rolling plate, the sliding friction coefficient of the sliding bearing and the rolling bearing of the steel ball A slip and steel ball composite seismic isolation device with a friction coefficient intermediate to the rolling friction coefficient can be obtained.

By appropriately adjusting the width or number of sliding plates having an appropriate shape, the load ratio between the sliding bearing and the rolling bearing of the steel ball can be changed and used.

In the second solution, the lower pole side of the steel ball adsorbed under the upper rolling surface is formed by forming the entire upper surface of the lower rolling plate facing the upper rolling surface in a normal state as a steel ball non-contact surface. Does not contact the upper surface of the lower rolling plate and does not support the seismic isolation load. During normal times, the sliding plate of the annular slide base supports the entire seismic isolation load. Therefore, even if an external force such as wind acts in normal times, the steel ball does not roll and the seismic isolation object swings. do not do.

In the third solution, among the upper surfaces of the lower rolling plates opposed to the upper rolling surfaces in the normal state, the lower rolling plate upper surface of an appropriate circular area is left at the central side, thereby adsorbing under the upper rolling surface. A part of the steel ball shares and supports the seismic isolation load along with the sliding plate.

The sliding friction resistance at the start of earthquake motion can be increased or decreased by appropriately increasing or decreasing the remaining circular area within a range in which the steel ball does not roll even when an external force such as wind is applied during normal times.

(A) The longitudinal cross-sectional view of the sliding and steel ball compound seismic isolation apparatus A based on Embodiment 1. FIG. (B) A horizontal cut plan view of the AA portion in FIG. 1a (including perspective of the steel ball). The top view of the BB part of FIG. 1a. (A) The enlarged longitudinal cross-sectional view in the great circle line of FIG. 1a. (B) The horizontal cut top view of CC section of Drawing 3a (including perspective of a steel ball). (A) The longitudinal cross-sectional view of the sliding and steel ball compound seismic isolation apparatus B based on Embodiment 2. FIG. (B) Horizontal cut plan view of the DD section of FIG. 4a (including perspective of steel balls). FIG. 4B is an enlarged vertical sectional view in the great circle line of FIG. 4A. The longitudinal cross-sectional view of the sliding and steel ball compound seismic isolation apparatus C based on Embodiment 3. FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The small white circles in the rectangle in the figure indicate permanent magnets.

(First Embodiment) A steel ball composite seismic isolation device A will be described with reference to FIGS. 1a to 3b. A rigid non-magnetic body having a predetermined thickness facing the upper surface of the lower rolling plate 1 will be described. An upper and lower rotating disk base 2 having an upper and lower smooth surface is provided, and the upper surface side of the disk base 2 is appropriately placed on the entire circumference of the disk base 2 so as to form a permanent magnet mounting chamber 3 having a predetermined diameter. A cylindrical wall body 4 having a sufficient height is provided integrally with the disk base 2.

A steel ball retaining chamber / moving path 5 having an appropriate inner volume is formed, which is curved in an appropriate bowl shape from the entire circumferential position at an appropriate interval from the outer periphery of the entire cylindrical wall 4 to the lower inner direction. The bottom ring-shaped chamber wall plate 6 is arranged as a circular ring-shaped chamber wall plate 6 by cutting out the bottom side of the bottom of the rigid bowl-like body into a circle.

The lower surface side of the upper rolling disk base 2 is formed as the upper rolling surface 7, and obliquely downward from the peripheral edge of the entire upper rolling disk base 2 of the lower surface side toward the center under the upper rolling surface 7. A steel ball transfer-in / out inclined ceiling surface 8 is formed by cutting into an annular shape with an appropriate inclination at an appropriate width, and a plurality of steel balls 9 are formed between the lower surface of the upper rolling surface 7 and the upper surface of the lower rolling plate 1. An appropriate number is arranged.

Further, the entire tip end side of the circular opening end 10 at the lower end of the circular annular chamber wall plate 6 is extended to the upper surface of the lower rolling plate 1 below the steel ball transfer-in / out inclined ceiling surface 8. In order to stably fix the circular annular chamber wall plate 6, an appropriate support material is attached to the inner wall side of the circular annular chamber wall plate 6 at equal intervals and screwed to the outer wall of the cylindrical wall body 4. It may be used.

An appropriate number of steel balls 9 are also arranged in the steel ball stopping chamber / movement path 5, and a rectangular magnet 11 a is used as a permanent magnet having an appropriate plane shape in the permanent magnet placement chamber 3. It has a flat yoke 12a of S magnetic pole and N magnetic pole on the vertical side, and the width value between the outer surfaces of the left and right yoke 12a is twice the diameter of the steel ball 9 used under the upper rolling surface 7 The N values of the yokes 12a of the plurality of square bar magnets 11a are sandwiched between the upper load supporting intermediate wall plates 13 made of a non-magnetic material having a predetermined width and the same height as the yoke 12a. The same poles of the magnetic pole or the S magnetic pole are brought into contact with each other and placed in contact with the entire surface.

The permanent magnet to be used is not limited to the square bar-shaped magnet 11a, and rectangular or rectangular permanent magnets having the same width value between the outer surfaces of the left and right yokes 12a are also used. The length is used in accordance with the inner diameter in the magnet mounting chamber 3.

A rigid annular slide base 14 having an appropriate width is formed on the lower end side of the circular annular chamber wall plate 6 with an appropriate width downward from an entire circumferential position spaced from the outer peripheral edge of the entire annular chamber wall plate 6 at an appropriate interval. A suitable sliding plate 15 made of a resin plate or the like having a small pressure resistance is fixed and abutted on the upper surface of the lower rolling plate 1.

An upper load support plate 16 made of a non-magnetic material is disposed on the permanent magnet 11a in the permanent magnet placement chamber 3 so that the height of the upper surface of the plate is aligned with the height of the cylindrical wall body 4, and the upper load support plate 16 and the cylinder are arranged. A mounting plate 17 is disposed on the upper end side of the wall-like wall body 4, and the upper end side of the cylindrical wall body 4, the circular annular chamber wall plate 6, and the annular slide base 14 is further mounted on the mounting plate 17. The load support intermediate wall plate 13 is screwed with the upper load support plate 16 interposed therebetween.

The entire upper surface of the lower rolling plate 1 opposed to the upper rolling surface 7 in a normal state is cut to a slight depth to form a steel ball non-contact surface 18.

As the forming material of the upper rolling disk base 2, the cylindrical wall body 4, the upper load support intermediate wall plate 13, and the upper load support plate 16 made of a rigid non-magnetic material, stainless steel, aluminum material, engineering resin material, composite Any material made of a rigid non-magnetic material, such as a resin material, which has other mechanical strength and is suitable for use as a rolling plate or the like can be used.

In order to integrally provide the upper rolling disk base 2 and the cylindrical wall body 4, the upper rolling disk base 2 and the cylindrical wall body 4 are integrally formed by screwing, welding, or the like, or an appropriate integral forming process. Further, the upper load supporting intermediate wall plate 13 may be integrally molded and used at the same time.

The circular annular chamber wall plate 6 is made of a steel plate, steel material, light metal material, synthetic resin material, etc., and can be easily divided into a plurality of parts by screwing, welding, etc. or an appropriate integral molding process, thereby facilitating internal maintenance management. .

As the rectangular bar-shaped magnet 11a and the like, any material such as a ferrite magnet or a neodymium magnet can be used as long as the shape and the necessary attractive force can be obtained, and it is economical to use a commercially available general-purpose product. If necessary, make a special order.

By aligning the height of the yoke 12 a and the height of the upper load support intermediate wall plate 13, the yoke 12 a can also support the upper load by way of the upper load support plate 16. Note that the upper load may not be supported by the yoke 12a.

A plurality of steel balls 9 disposed in an appropriate number between the upper rolling surface 7 and the lower rolling plate 1 upper surface are subjected to rust prevention treatment such as plating.

The rigid annular slide base 14 having an appropriate width is made of steel, light metal material, casting, synthetic resin material, etc., and is divided into a plurality of parts by screwing, welding, etc., or an appropriate integral molding process. Maintenance management becomes easy. The shape is not limited to an annular shape, and may be used as a rectangular shape in combination in an annular shape.

The upper surface of the lower rolling plate 1 requires a smooth surface to facilitate rolling of the plurality of steel balls 9, and a steel plate that has been subjected to rust prevention treatment is suitable as a forming material.

The upper area of the lower rolling plate 1 slides around the seismic design horizontal displacement centered on the non-contact surface 18 of the steel ball, and when the steel ball compound seismic isolation device A is displaced, the annular slide base 14 is sufficiently large. It requires an area that allows sliding isolation without hindrance.

A plurality of appropriate sliding and steel ball combined seismic isolation bearing devices A are disposed and used between the bottom base material of the seismic isolation object and the base board in order to share and support the seismic isolation object load.

Even if vertical external force due to vertical seismic motion slips and acts on the steel ball composite seismic isolation device A, even if the lower rolling plate 1 and the upper rolling surface 7 are separated from each other, a plurality of them are below the upper rolling surface 7. Therefore, there is no fear that the rolling seismic isolation function is lost during the subsequent horizontal earthquake motion.

The steel ball 9 adsorbed under the upper rolling surface 7 is formed by slightly cutting the entire upper surface of the lower rolling plate 1 facing the upper rolling surface 7 in a normal state to form a steel ball non-contact surface 18. The lower pole side does not contact the upper surface of the lower rolling plate 1 and does not support the seismic isolation load. During normal times, the sliding plate 15 of the annular slide base 14 supports the entire seismic isolation load, so that the steel ball 9 does not roll even when an external force such as wind acts in normal times, and the seismic isolation object Does not rock.

When the sliding plate 15 is fixed to the lower end side and the annular slide base 14 is brought into contact with the upper surface of the lower rolling plate 1 and an earthquake motion exceeding the sliding friction coefficient of the sliding plate 15 acts upon the earthquake motion, the sliding plate 15 is a sliding isolation, and the steel ball 9 is a rolling isolation, and a sliding is performed with an intermediate friction coefficient between the sliding friction coefficient of the sliding bearing and the rolling friction coefficient of the rolling bearing of the steel ball, Steel ball composite seismic isolation device A is obtained.

(Second Embodiment) Slip and steel ball composite seismic isolation device B will be described with reference to FIGS. 4a to 5. On the upper surface of lower rolling plate 1, the slip, slip and steel ball composite Install seismic support device A.

Under normal conditions, the lower pole side of the steel ball 9 adsorbed under the upper rolling surface 7 is in contact with the upper surface of the lower rolling plate 1, and the seismic isolation load is shared with and supported by the annular slide base 14. The coefficient of sliding friction is large, and even if an external force such as wind acts, it is difficult to move easily.

At the time of the earthquake motion, if an earthquake motion exceeding the sliding friction coefficient of the sliding plate 15 acts, the sliding plate 15 performs sliding isolation and the steel ball 9 performs rolling isolation, and the sliding friction coefficient of the sliding bearing and the rolling bearing of the steel ball A slip and steel ball composite seismic isolation device B that performs a seismic isolation operation with a friction coefficient intermediate to the rolling friction coefficient is obtained.

In addition, as shown in the enlarged view 5, a cylindrical magnet 11b having an S magnetic pole and an N magnetic pole arranged on the upper and lower sides is used as an appropriate planar permanent magnet in the permanent magnet placement chamber 3 as shown in FIG. And using a U-shaped yoke 12b formed by bending the arc side into a U-shape, and inserting and fixing a cylindrical magnet 11b in the U-shape of the U-shaped yoke 12b, The width value between both sides of the U-shaped yoke 12b is set to the same value as twice the diameter of the steel ball 9 used under the upper rolling surface 7, and the height of the columnar magnet 11b in the U-shaped yoke 12b is increased. And the U-shaped yoke 12b are made the same height, and the U-shaped yoke 12b is brought into contact with each other with the upper load supporting intermediate wall plate 13 made of a non-magnetic material in the permanent magnet mounting chamber 3. In this way, a plurality can be used in contact with the entire surface. Further, not only the columnar magnet 11b but also a prismatic magnet can be used as appropriate.

(Third embodiment) If the slip and steel ball composite seismic isolation device C is described with reference to FIG. 6, the slip and steel ball composite seismic isolation device A of the first embodiment is provided on the upper surface of the lower rolling plate 1. Arrange.

Of the upper surface of the lower rolling plate 1 facing the upper rolling surface 7 in normal times, the upper surface of the island-shaped lower rolling plate 1a having an appropriate circular area is left at the center side, and the upper surface of the remaining lower rolling plate 1 is slightly changed. The annular steel ball non-contact surface 19 is formed by cutting to a depth.

The lower pole of the steel ball 9 adsorbed under the upper rolling surface 7 on the island-like lower rolling plate 1 a abuts on the island-like lower rolling plate 1 a, and the island-like lower rolling plate 1 a becomes the sliding plate 15. At the same time, the seismic isolation load is shared and supported during normal times.

Increase / decrease the sliding friction resistance at the start of earthquake motion by increasing / decreasing the circular area of the island-shaped rolling plate 1a as appropriate within the range where the steel ball 9 does not roll even when an external force such as wind is applied during normal times. Can be made.

Although not shown in the drawings, as another embodiment, the annular slide base 14 is used alone as a steel ball seismic isolation device without using the annular slide base 14 erected out of the peripheral edge of the circular annular chamber wall plate 6. it can.

The present invention is not limited to the above, and other configurations can be used as long as they do not depart from the gist of the present invention.

A Sliding, steel ball compound seismic isolation device.
B Sliding, steel ball composite seismic isolation device.
C Sliding, steel ball compound seismic isolation device.
N magnetic pole.
S magnetic pole.
1 Lower rolling plate.
1a Island-like rolling plate.
2 Upper rolling disc stand.
3 Permanent magnet placement room.
4 Cylindrical wall.
5 Steel ball stopping room and moving path.
6 Round annular chamber wall board.
7 Upper rolling surface.
8 Steel ball moving into and out of the inclined ceiling surface.
9 Steel balls.
10 Circular open end.
11a Square bar magnet.
11b Cylindrical magnet.
12a Flat-shaped yoke.
12b U-shaped yoke.
13 Upper load supporting intermediate wall plate.
14 Annular slide base.
15 Sliding board.
16 Upper load support plate.
17 Mounting plate.
18 Steel ball non-contact surface.
19 Non-contact surface of an annular steel ball.

Claims (3)

In the rolling ball bearing device having an upper magnetic pole rolling surface made of a permanent magnet and a magnetic pole of a permanent magnet, instead of using the upper magnetic pole rolling surface, the upper rolling surface is opposed to the upper surface of the lower rolling plate, An upper and lower rolling disk base made of a rigid non-magnetic material having a predetermined plate thickness is disposed, and the upper surface of the disk base is formed with a permanent magnet mounting chamber having a predetermined diameter. A cylindrical wall body having an appropriate height is provided integrally with the disk base on the entire circumference of the base, and is directed downward and inward from the entire circumferential position at an appropriate interval from the outside of the entire circumference of the cylindrical wall. The curved annular chamber wall plate that forms a steel ball retaining chamber and moving path with an appropriate inner volume that is curved into an appropriate bowl shape is cut into a circular shape at the bottom side on the lower end side of the rigid bowl-like body,と し て Arranged as an annular chamber wall plate, the lower surface side of the upper rolling disk base is the upper rolling surface, and from the peripheral edge of the entire upper rolling disk base to the center of the upper rolling surface. A steel ball transfer-in / out inclined ceiling surface is formed by cutting in an annular shape with an appropriate inclination angle at an appropriate inclination angle downward, and a plurality of steels are formed between the upper rolling surface and the lower rolling plate upper surface. Arrange the appropriate number of spheres, and further extend the top end of the circular opening end of the round annular chamber wall plate to the upper surface of the lower rolling plate under the steel ball transfer-in / out inclined ceiling surface. An appropriate number of steel balls are also arranged in the moving path, and an appropriate planar permanent magnet having a yoke on the side surface is set to a width value between the outer surfaces of both yokes in the permanent magnet mounting chamber. The upper load supporting intermediate wall plate made of a non-magnetic material having the same width and the same height as the yoke is used at the appropriate position using the same value as the diameter of the steel ball used below the upper rolling surface. Plurally, a plurality of them are placed in contact with each other across the entire surface, and further provided with an appropriate width downward from an entire circumferential position spaced at an appropriate interval from the outer peripheral edge of the circular annular chamber wall plate. Rigid rigid ring slide The upper load support plate made of a non-magnetic material is placed on the upper surface of the permanent magnet in the permanent magnet mounting chamber. The height is aligned with the cylindrical wall height, a mounting plate is disposed on the upper end side of the upper load support plate and the cylindrical wall body, and the mounting plate has a cylindrical wall body, an elliptical annular chamber wall plate, A sliding and steel ball combined seismic isolation bearing device, characterized by being screwed to the upper end side of the annular slide base. 2. The sliding and steel ball according to claim 1, wherein the entire upper surface of the lower rolling plate facing the upper rolling surface in a normal state is cut to a slight depth to form a non-contact surface of the steel ball. Compound seismic isolation device. Of the upper surface of the lower rolling plate facing the upper rolling surface in normal times, leave the upper surface of the lower rolling plate in an appropriate circular area at the center side, and cut the remaining upper surface of the lower rolling plate to a slight depth. The slip and steel ball composite seismic isolation bearing device according to claim 1, wherein an annular steel ball non-contact surface is formed.

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