JP6912883B2 - Linear rolling bearing - Google Patents

Description

The present invention relates to a linear motion rolling bearing provided between an upper structure and a lower structure, which are a pair of upper and lower structures. In particular, it relates to linear bearings that can respond to changes in the mode of earthquakes.

When an earthquake occurs, target structures such as buildings and structures are shaken horizontally and vertically.
If the acceleration level due to an earthquake or the like is large, the target structure may be damaged, the contents of the target structure may be accelerated more than expected, or the target structure may be displaced more than expected.
Therefore, a seismic isolation device that reduces the vibration energy transmitted from the foundation to the target structure to isolate the vibration, or absorbs the vibration energy when the target structure vibrates and reduces the vibration level to suppress the vibration. Devices with various structures are being tested as vibration isolation devices.
By properly setting the structure and the specifications of the elements that make up the structure, the desired seismic isolation performance and vibration damping performance can be exhibited.
For example, linear rolling bearings are used for that purpose.

Linear rolling bearings mainly consist of linear rails, linear blocks, rubber shims, and flange plates. The linear motion rolling bearing structure is an assembly of linear guides with the guide directions orthogonal to each other via rubber shims. The linear rolling bearing structure can move 360 ° horizontally with little rolling friction resistance while supporting the vertical axial force of the building.
In general, linear motion rolling bearings have only a support mechanism and a cycle adjustment function among the seismic isolation functions, so a separate restoration material is required. Laminated rubber may be used as the restoration material. Since members having different vertical rigidity are arranged in one seismic isolation device, there is an inconvenience that non-landing occurs. In addition, a damper is required to suppress excessive deformation.
Furthermore, in recent years, there have been concerns about the occurrence of long-period ground motions, and due to these effects, the linear rolling bearings are shaken for a long time, and the rails or blocks generate heat, which increases frictional resistance and makes it difficult to maintain horizontal performance. There was a fear of becoming.

As a conventional linear motion rolling bearing, a damper published in Patent Document 1 is known.

The present invention has been devised in view of the above-mentioned problems, and an object of the present invention is to provide a linear motion rolling bearing capable of obtaining an appropriate vibration suppression effect according to a seismic motion or a building.

In order to achieve the above object, a virtual X-axis and a virtual Y-axis are provided between the upper structure and the lower structure, which are a pair of upper and lower structures according to the present invention, to support a structure. The upper base plate structure, which is a base plate structure that is orthogonal in the horizontal plane and supports the upper structure, the upper rail structure, which is a rail structure that is supported by the upper base plate structure and extends in the X-axis direction, and the upper rail structure. An upper block structure that is a block structure that is guided so as to be relatively movable in the X-axis direction, a lower base plate structure that is a base plate structure supported by the lower structure, and a lower base plate structure that is supported by the lower base plate structure and is supported in the Y-axis direction. A lower rail structure that extends to the lower rail structure, a lower block structure that is guided to the lower rail structure so as to be relatively movable in the Y-axis direction, and an intermediate plate structure that has a plate-like contour. , And the upper block structure and the lower block structure are connected with the intermediate plate structure interposed therebetween.

According to the configuration of the present invention, the virtual X-axis and the virtual Y-axis are orthogonal to each other in the horizontal plane. The superstructure plate structure is a foundation plate structure that supports the superstructure. The upper rail structure is a rail structure that is supported by the upper base plate structure and extends in the X-axis direction. The upper block structure is a block structure that is guided to the upper rail structure so as to be relatively movable in the X-axis direction. The lower base plate structure is a base plate structure supported by the lower structure. The lower rail structure is a rail structure that is supported by the lower base plate structure and extends in the Y-axis direction. The lower block structure is a block structure that is guided to the lower rail structure so as to be relatively movable in the Y-axis direction. The intermediate plate structure is a structure having a plate-like contour. The upper block structure and the lower block structure are connected with the intermediate plate structure interposed therebetween.
As a result, the structure can move horizontally when an earthquake occurs.

The linear motion rolling bearings according to the embodiment of the present invention will be described below. The present invention includes any of the embodiments described below, or a combination of two or more of them.

The linear motion rolling support according to the embodiment of the present invention includes an electric circuit, and has a piezoelectric element member having a plurality of piezoelectric elements in which the intermediate plate structure forms a plate-like contour and is aligned in the contour. Then, when the electric circuit is electrically connected to a pair of electrodes of the plurality of piezoelectric elements of the intermediate plate structure and the plate-like thickness of the piezoelectric element member of the intermediate plate structure changes, the intermediate plate structure is described. A potential difference occurs between the pair of electrodes of the piezoelectric element.
According to the configuration of the embodiment according to the present invention, the piezoelectric element member having the intermediate plate structure has a plurality of piezoelectric elements that form a plate-like contour and are aligned in the contour. The electric circuit is electrically connected to a pair of electrodes of the plurality of piezoelectric elements having the intermediate plate structure. When the plate-like thickness of the piezoelectric element member having the intermediate plate structure changes, a potential difference occurs between the pair of electrodes of the piezoelectric element having the intermediate plate structure.
As a result, when an earthquake occurs and the structure moves in the horizontal direction, a potential difference is applied to the electric circuit due to vertical vibration.

In the linear rolling bearing according to the embodiment of the present invention, when it is determined that an earthquake has occurred, the electric circuit has the intermediate plate according to the degree of non-landing between the bearing and the other bearing supporting the structure. A voltage is applied to the pair of electrodes of the piezoelectric element of the structure to change the plate-like thickness of the piezoelectric element member of the intermediate plate structure.
According to the configuration of the embodiment according to the present invention, when it is determined that an earthquake has occurred, the electric circuit has the intermediate plate structure according to the degree of non-landing between the support and the other support supporting the structure. A voltage is applied to the pair of electrodes of the piezoelectric element to change the plate-like thickness of the piezoelectric element member having the intermediate plate structure.
As a result, it is possible to realize a function of reducing the degree of non-landing with other bearings.

Further, in the linear motion rolling support according to the embodiment of the present invention, the first foundation plate structure, the second foundation plate structure, the first foundation plate structure, and the first base plate structure in which the foundation plate structure is a pair of upper and lower plate-like structures. It has a third base plate structure which is a plate-like structure sandwiched between the two base plate structures, and the third base plate structure has a plurality of piezoelectric elements which form a plate-like contour and are aligned in the contour. Having a piezoelectric element member, the electric circuit is electrically connected to a pair of electrodes of the piezoelectric element of the third foundation plate structure, and the plate-like thickness of the piezoelectric element member of the third foundation plate structure is increased. When the deformation is changed, a potential difference is generated in the pair of electrodes of the piezoelectric element having the third foundation plate structure.
According to the configuration of the embodiment according to the present invention, the first foundation plate structure, the second foundation plate structure, the first foundation plate structure, and the second foundation plate structure in which the foundation plate structure is a pair of upper and lower plate-like structures. It has a third base plate structure which is a plate-like structure sandwiched between the two. The third base plate structure has a piezoelectric element member having a plurality of piezoelectric elements that form a plate-like contour and are aligned in the contour. The electric circuit is electrically connected to a pair of electrodes of the plurality of piezoelectric elements having the third base plate structure. When the plate-like thickness of the piezoelectric element member of the third base plate structure is deformed to change, a potential difference is generated between the pair of electrodes of the piezoelectric element of the third base plate structure.
As a result, when an earthquake occurs and the structure moves in the horizontal direction, a current flows through the electric circuit due to vertical vibration.

Further, in the linear rolling bearing according to the embodiment of the present invention, when it is determined that an earthquake has occurred, the electric circuit has the electric circuit according to the degree of non-landing generated between the bearing and the other bearing supporting the structure. A voltage is applied to the pair of electrodes of the piezoelectric element of the third base plate structure to change the plate-like thickness of the piezoelectric element member of the third base plate structure.
According to the configuration of the embodiment according to the present invention, when it is determined that an earthquake has occurred, the electric circuit is the third foundation according to the degree of non-landing that occurs between the structure and other support supporting the structure. A voltage is applied to the pair of electrodes of the piezoelectric element of the plate structure to change the plate-like thickness of the piezoelectric element member of the third base plate structure.
As a result, it is possible to realize a function of eliminating the unevenness between the bearings supporting the structure.

Further, the linear motion rolling support according to the embodiment of the present invention includes a rail support structure which is a plate-like structure sandwiched between the rail structure and the base plate structure, and the rail support structure is plate-shaped. The electric circuit has a piezoelectric element member having a plurality of piezoelectric elements that form the contour of the above and are aligned in the contour, and the electric circuit is electrically connected to a pair of electrodes of the plurality of piezoelectric elements of the rail base plate structure. When the plate-like thickness of the piezoelectric element member of the rail support structure is deformed to change, a potential difference is generated between the pair of electrodes of the piezoelectric element of the rail base plate structure.
According to the configuration of the embodiment according to the present invention, the rail support structure is a plate-like structure sandwiched between the rail structure main body and the base plate structure. The piezoelectric element member of the rail support structure has a plurality of piezoelectric elements that form a plate-like contour and are aligned in the contour. The electric circuit is electrically connected to a pair of electrodes of the plurality of piezoelectric elements of the rail support structure. When the plate-like thickness of the piezoelectric element member of the rail support structure is deformed to change, a potential difference is generated between the pair of electrodes of the piezoelectric element of the rail support structure.
As a result, when an earthquake occurs and the structure moves in the horizontal direction, a current flows through the electric circuit due to vertical vibration.

Further, in the linear rolling bearing according to the embodiment of the present invention, when it is determined that an earthquake has occurred, the electric circuit has the electric circuit according to the degree of non-landing generated between the bearing and the other bearing supporting the structure. A voltage is applied to the pair of electrodes of the piezoelectric element of the rail support structure to change the plate-like thickness of the piezoelectric element member of the rail support structure.
According to the configuration of the embodiment according to the present invention, when it is determined that an earthquake has occurred, the electric circuit supports the rail according to the degree of non-landing that occurs between the support and the other support supporting the structure. A voltage is applied to the pair of electrodes of the piezoelectric element of the structure to change the plate-like thickness of the piezoelectric element member of the rail support structure.
As a result, it is possible to provide a function of eliminating the unevenness between the bearings supporting the structure.

In the linear motion rolling support according to the embodiment of the present invention, the rail friction member and the block structure which form a rail smooth surface which is a smooth surface extending in the axial direction and can slide in contact with the rail smooth surface. The rail friction structure includes a rail pressing structure that is supported by the rail and presses the rail friction member against the rail smooth surface.
According to the configuration of the embodiment according to the present invention, a rail smooth surface is formed, which is a smooth surface in which the rail structure extends in the axial direction. The rail friction structure includes a rail friction member that can slide in contact with the rail smooth surface and a rail pressing structure that is supported by the block structure and presses the rail friction member against the rail smooth surface.
As a result, when an earthquake occurs and the structure moves relative to each other in the horizontal direction, the frictional force generated between the rail friction member and the rail smooth surface can attenuate the vibration of the structure.

The linear motion rolling support according to the embodiment of the present invention has a piezoelectric element member having a plurality of piezoelectric elements in which the rail pressing structure forms a plate-like contour and is aligned in the contour, and the electric circuit has the rail. When it is determined that an earthquake has occurred by being electrically connected to a pair of electrodes of the plurality of piezoelectric elements of the pressing structure, the electric circuit applies a voltage to the pair of electrodes of the piezoelectric element of the rail pressing structure to apply a voltage to the rail. The plate-like thickness of the piezoelectric element member having a pressing structure is changed.
According to the configuration of the embodiment according to the present invention, the piezoelectric element member having the rail pressing structure has a plurality of piezoelectric elements that form a plate-like contour and are aligned in the contour. The electric circuit is electrically connected to a pair of electrodes of the plurality of piezoelectric elements of the rail pressing structure. When it is determined that an earthquake has occurred, the electric circuit applies a voltage to the pair of electrodes of the piezoelectric element of the rail pressing structure to change the plate-like thickness of the piezoelectric element member of the rail pressing structure.
As a result, the frictional force generated between the rail friction member and the rail smooth surface can be adjusted by changing the voltage applied to the pair of electrodes of the piezoelectric element.

In the linear motion rolling bearing according to the embodiment of the present invention, a foundation plate friction member that forms a foundation plate smooth surface on which the foundation plate structure extends in the axial direction and can slide in contact with the foundation plate smooth surface. And a foundation plate friction structure having a foundation plate pressing structure supported by the block structure and pressing the foundation plate friction member against the smooth surface of the foundation plate.
According to the configuration of the embodiment according to the present invention, the foundation plate smooth surface is formed, which is a smooth surface in which the foundation plate structure extends in the axial direction. The base plate friction structure includes a base plate friction member that can slide in contact with the base plate smooth surface and a base plate pressing structure that is supported by the block structure and presses the base plate friction member against the base plate smooth surface.
As a result, when an earthquake occurs and the structure moves relative to each other in the horizontal direction, the frictional force generated between the foundation plate friction member and the foundation plate smooth surface can attenuate the vibration of the structure.

The linear motion rolling support according to the embodiment of the present invention has a piezoelectric element member having a plurality of piezoelectric elements in which the base plate pressing structure forms a plate-like contour and is aligned in the contour, and the electric circuit is the foundation. It is electrically connected to a pair of electrodes of the piezoelectric element of the plate pressing structure, and when it is determined that an earthquake has occurred, the electric circuit applies a voltage to the pair of electrodes of the piezoelectric element of the base plate pressing structure. The plate-like thickness of the piezoelectric element member of the base plate pressing structure is changed.
According to the configuration of the embodiment according to the present invention, the piezoelectric element member having the base plate pressing structure has a plurality of piezoelectric elements that form a plate-like contour and are aligned in the contour. The electric circuit is electrically connected to a pair of electrodes of the plurality of piezoelectric elements of the base plate pressing structure. When it is determined that an earthquake has occurred, the electric circuit applies a voltage to the pair of electrodes of the piezoelectric element of the base plate pressing structure to change the plate-like thickness of the piezoelectric element member of the base plate pressing structure.
As a result, the frictional force generated between the base plate friction member and the base plate smooth surface can be adjusted by changing the voltage applied to the pair of electrodes of the piezoelectric element.

Further, the linear motion rolling support according to the embodiment of the present invention includes a temperature sensor for detecting the temperature of the block structure, and the electric circuit responds to a change in the temperature value of the block structure detected by the temperature sensor. The value of the voltage applied to the pair of electrodes of the piezoelectric element is changed accordingly.
According to the configuration of the embodiment according to the present invention, the temperature sensor detects the temperature of the block structure. The electric circuit changes the value of the voltage applied to the pair of electrodes of the piezoelectric element according to the change in the temperature value of the block structure detected by the temperature sensor.
As a result, it is possible to realize a function of changing the frictional force according to the temperature value of the block structure.

As described above, the linear motion rolling bearing according to the present invention has the following effects depending on its configuration.
The lower structure supports the lower base plate structure, the lower base plate structure supports the lower rail structure extending in the Y-axis direction, and the lower rail structure allows the lower block structure to move relative to the Y-axis direction. The lower block structure is connected to the upper block structure with an intermediate plate structure interposed therebetween, the upper rail structure guides the upper block structure relative to the X-axis direction, and the upper rail structure is the said. Since it is supported by the upper base plate structure and the upper base plate structure supports the upper structure, the structure can move in the horizontal direction when an earthquake occurs.
The piezoelectric element member having the intermediate plate structure has a plurality of piezoelectric elements in the contour of the strip, and when the plate-like thickness of the piezoelectric element member changes, a potential difference is generated between the pair of electrodes of the piezoelectric element, and the potential difference causes an electric circuit. Since the current is allowed to flow, a potential difference is applied to the electric circuit due to vertical vibration when an earthquake occurs and the structure moves in the horizontal direction.
A voltage is applied to a pair of electrodes of the piezoelectric element of the intermediate plate structure according to the degree of non-landing generated between the earthquake and other bearings supporting the structure, and the intermediate plate structure is described. Since the plate-like thickness of the piezoelectric element member is changed, the function of reducing the degree of non-landing with other bearings can be realized.
A third base plate member having a piezoelectric element member having a plurality of piezoelectric elements aligned in a plate-shaped contour is sandwiched between the first base plate structure and the second base plate structure, and the plate shape of the piezoelectric element member. When the thickness of the piezoelectric element changes, a potential difference is generated between the pair of terminals of the piezoelectric element. Therefore, when an earthquake occurs and the structure moves in the horizontal direction, a current flows through the electric circuit due to vertical vibration.
When an earthquake occurs, a voltage is applied to the pair of electrodes of the piezoelectric element of the third foundation plate structure according to the degree of non-landing between the bearing and other bearings that support the structure, and the plate shape of the piezoelectric element member is applied. Since the thickness of the structure is changed, it is possible to realize a function of eliminating the unevenness between the bearings supporting the structure.
The rail support structure has a piezoelectric element member having a plurality of piezoelectric elements aligned in a plate-like contour, and when the plate-like thickness of the piezoelectric element member changes, a potential difference occurs between a pair of terminals of the piezoelectric element. Therefore, when an earthquake occurs and the structure moves in the horizontal direction, a current flows through the electric circuit due to vertical vibration.
When an earthquake occurs, a voltage is applied to a pair of electrodes of the piezoelectric element of the rail support structure according to the degree of non-landing with other supports that support the structure to increase the plate-like thickness of the piezoelectric element member. Since it is changed, it is possible to provide a function of eliminating the unevenness between the supports supporting the structure.
Since the rail pressing mechanism supported by the block structure presses the rail friction member against the rail smooth surface formed in the rail structure, when an earthquake occurs and the structure moves relative to each other in the horizontal direction, the rail friction member and the rail are smoothed. The frictional force generated between the surface and the surface can dampen the vibration of the structure.
The rail pressing structure has a plurality of piezoelectric elements in the plate-shaped contour of the piezoelectric element member, and a voltage is applied to a pair of electric powers of the plurality of piezoelectric elements to change the plate-shaped thickness of the piezoelectric element member. Therefore, the voltage applied to the pair of electrodes of the piezoelectric element can be changed to adjust the frictional force generated between the rail friction member and the rail smooth surface.
The foundation plate pressing mechanism supported by the block structure presses the foundation plate friction member against the smooth surface of the foundation plate formed in the foundation plate structure, so that when an earthquake occurs and the structure moves relative to the horizontal direction, the foundation plate The frictional force generated between the friction member and the smooth surface of the foundation plate can dampen the vibration of the structure.
The base plate pressing structure has a plurality of piezoelectric elements in the plate-shaped contour of the piezoelectric element member, and a voltage is applied to a pair of electric powers of the plurality of piezoelectric elements to change the plate-shaped thickness of the piezoelectric element member. Therefore, the voltage applied to the pair of electrodes of the piezoelectric element can be changed to adjust the frictional force generated between the base plate friction member and the base plate smooth surface.
Since the value of the voltage applied to the pair of electrodes of the piezoelectric element is changed according to the change in the temperature value of the block structure detected by the temperature sensor, the frictional force is changed according to the temperature value of the block structure. It is possible to realize the function of changing the temperature.
Therefore, it is possible to provide a linear motion rolling bearing whose dynamic characteristics or vibration characteristics can be adjusted by a simple structure.

It is a side conceptual diagram of the linear motion rolling bearing which concerns on 1st Embodiment of this invention. It is a plane conceptual view of the linear motion rolling bearing which concerns on 1st Embodiment of this invention. It is a plan view of the piezoelectric element member 1 which concerns on 1st Embodiment of this invention. It is sectional drawing and side conceptual view of the piezoelectric element member 1 which concerns on 1st Embodiment of this invention. 2 is a cross-sectional view and a side conceptual view of the piezoelectric element member 2 according to the first embodiment of the present invention. It is sectional drawing and side conceptual view of the piezoelectric element member 3 which concerns on 1st Embodiment of this invention. It is a side conceptual diagram of the linear motion rolling bearing which concerns on the 2nd Embodiment of this invention. It is a plan view of the linear motion rolling bearing which concerns on the 2nd Embodiment of this invention. It is an operation explanatory drawing of the rail friction structure which concerns on 2nd Embodiment of this invention. It is a conceptual diagram of a structure.

Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.
The present invention relates to a linear bearing that is provided between an upper structure and a lower structure, which are a pair of upper and lower structures, and supports the structure.
For convenience of explanation, the case where a linear motion rolling bearing is attached to a building will be described as an example.
The upper floor structure R is a lower structure of the building.
The lower floor structure B is the foundation structure of the building.
The virtual X-axis and the virtual Y-axis are orthogonal in the horizontal plane.

First, the linear motion rolling bearing according to the first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a side conceptual diagram of the linear motion rolling bearing according to the first embodiment of the present invention. FIG. 2 is a plan conceptual diagram of a linear motion rolling bearing according to the first embodiment of the present invention. FIG. 3 is a plan conceptual view of the piezoelectric element member according to the first embodiment of the present invention. FIG. 4 is a cross-sectional view and a side conceptual view of the piezoelectric element member according to the first embodiment of the present invention.

The linear motion rolling bearing according to the first embodiment of the present invention includes an upper foundation plate structure 100x, an upper rail structure 210x, an upper block structure 220x, a lower foundation plate structure 100y, a lower rail structure 210y, a lower block structure 220y, and an intermediate plate. It is composed of a structure 300 and an electric circuit 400.

The upper base plate structure 100x is a base plate structure 100 that supports the upper structure R.
The base plate structure is a plate-like structure.
For example, the upper foundation plate structure 100x is fixed to the lower surface of the upper structure R by anchor bolts 140.

The lower base plate structure 100y is a base plate structure 100 supported by the lower structure B.
The base plate structure is a plate-like structure.
For example, the lower foundation plate structure 100y is fixed to the upper surface of the lower structure B by anchor bolts 140.

The upper rail structure 210x is a rail structure 210 supported by the upper base plate structure 100x and extending in the X-axis direction.
For example, the upper rail structure 210x is bolted to the lower surface of the lower base plate structure 100y.
The upper block structure 220x is a block structure 220 that is guided to the upper rail structure 210x so as to be relatively movable in the X-axis direction.
For example, the upper block structure 220x is guided to the lower part of the upper rail structure 210x.
A series of endless iron balls roll in the rail groove provided in the rail structure 210 and the tunnel-shaped hole provided in the block structure 220, and the upper block structure 220x is relative to the upper rail structure 210x in the X-axis direction. You can move.

The lower rail structure 210y is a rail structure supported by the lower base plate structure 100y and extending in the Y-axis direction.
For example, the lower rail structure 210y is bolted to the upper surface of the lower base plate structure 100y.
The lower block structure 220y is a block structure that is guided by the lower rail structure 210y so as to be relatively movable in the Y-axis direction.
For example, the lower block structure 220y is guided to the upper part of the lower rail structure 210y.
A series of endless iron balls roll in the rail groove provided in the rail structure 210 and the tunnel-shaped hole provided in the block structure 220, and the lower block structure 220y is relative to the lower rail structure 210y in the Y-axis direction. You can move.

The intermediate plate structure 300 is a structure having a plate-like contour.
The upper block structure 220x and the lower block structure 220y are connected with the intermediate plate structure 300 interposed therebetween.
The intermediate plate structure 300 includes a piezoelectric element member 310.
The intermediate plate structure 300 may be composed of the piezoelectric element member 310 and a pair of metal plate members 320.
The piezoelectric element member 310 is sandwiched between a pair of metal plate members 320 from above and below.
The piezoelectric element member 310 has a plurality of piezoelectric elements 310a that form a plate-shaped contour and are aligned in the contour.

Hereinafter, three types of the structure of the piezoelectric element member will be described with reference to the drawings.
First, the structure 1 of the piezoelectric element member will be described.
3 and 4 illustrate the structure 1 of the piezoelectric element member 310.
The piezoelectric element member 310 may be composed of a plurality of piezoelectric elements 310a and a pair of partition plates 310b.
A plurality of piezoelectric elements 310a may be sandwiched between a pair of partition plates 310b from above and below.
When the plate-like thickness of the piezoelectric element member 310 of the intermediate plate structure 300 changes, a potential difference occurs between the pair of electrodes of the piezoelectric element 310a of the intermediate plate structure 300. For example, the plurality of piezoelectric elements 310a are located between the pair of partition plates 310b. Align.
When the plate-like thickness of the piezoelectric element member 310 of the intermediate plate structure 300 changes, compression strain or elongation strain occurs in the piezoelectric element contained in the piezoelectric rubber plate 310c of the intermediate plate structure 300, and a potential difference occurs between the pair of electrodes.

Next, the structure 2 of the piezoelectric element will be described.
FIG. 5 illustrates structure 2 of the piezoelectric element member 310.
The piezoelectric element member 310 may be composed of a piezoelectric rubber plate 310c.
The piezoelectric element member 310 may be composed of a piezoelectric rubber plate 310c and a pair of partition plates 310b.
The piezoelectric rubber plate 310c may have a piezoelectric element embedded in a thick rubber plate.
The piezoelectric rubber plate 310c may be a thick rubber plate to which a piezoelectric element is attached.
A single piezoelectric rubber plate 310c may be sandwiched between a pair of partition plates 310b from above and below.
When the plate-like thickness of the piezoelectric element member 310 of the intermediate plate structure 300 changes, a potential difference is generated between the pair of electrodes of the piezoelectric element contained in the piezoelectric rubber plate 310c of the intermediate plate structure 300. When the thickness of the shape changes, the piezoelectric element 310a of the intermediate plate structure 300 is subjected to compression strain or elongation strain, and a potential difference is generated between the pair of electrodes.

Next, the structure 3 of the piezoelectric element will be described.
FIG. 6 illustrates structure 3 of the piezoelectric element member 310.
The piezoelectric element member 310 may be composed of a piezoelectric rubber plate 310c.
The piezoelectric element member 310 may be composed of a piezoelectric rubber plate 310c and a pair of partition plates 310b.
The piezoelectric rubber plate 310c is a thick rubber plate in which a piezoelectric element is embedded.
The piezoelectric rubber plate 310c may be a thick rubber plate to which a piezoelectric element is attached.
A plurality of piezoelectric rubber plates 310c may be sandwiched between a pair of partition plates 310b from above and below.
When the plate-like thickness of the piezoelectric element member 310 of the intermediate plate structure 300 changes, a potential difference is generated between the pair of electrodes of the piezoelectric element contained in the plurality of piezoelectric rubber plates 310c of the intermediate plate structure 300. When the plate-like thickness of the above changes, the piezoelectric element contained in the piezoelectric rubber plate 310c of the intermediate plate structure 300 is subjected to compression strain or elongation strain, and a potential difference is generated between the pair of electrodes.

The electric circuit 400 may be composed of an electric circuit main body 410 and a non-land detection sensor 430.
The electric circuit 400 is electrically connected to a pair of electrodes of a plurality of piezoelectric elements 310a of the intermediate plate structure 300.
The electric circuit 400 may have a capacitor that is electrically connected to a pair of electrodes of a plurality of piezoelectric elements 310a of the intermediate plate structure 300.
In this way, when the plate-like thickness of the piezoelectric element member 310 of the intermediate plate structure 300 changes, compression strain or extension strain occurs in the piezoelectric element 310a of the intermediate plate structure 300, causing a potential difference between the pair of electrodes, resulting in an electric circuit. Current flows due to the potential difference.
The non-land detection sensor 430 is a sensor that detects the non-land generated between the land and other bearings that support the structure.
For example, the non-land detection sensor 430 detects the distance between the upper structure and the lower structure supported by the bearing for each bearing.
The non-landing detection sensor 430 detects non-landing when there is a difference in the separation distance between the upper structure and the lower structure for each bearing.

When it is determined that an earthquake has occurred, the electric circuit 400 applies a voltage to the pair of electrodes of the piezoelectric element 310a of the intermediate plate structure 300 to change the plate-like thickness of the piezoelectric element member 310 of the intermediate plate structure 300.
When it is determined that an earthquake has occurred, the electric circuit 400 can apply a voltage to the pair of electrodes of the piezoelectric element 310a of the intermediate plate structure 300 according to the degree of non-landing that occurs between the support and the other support supporting the structure. Then, the plate-like thickness of the piezoelectric element member 310 of the intermediate plate structure 300 may be changed.
For example, based on the distance between the lower structure and the superstructure supported by a specific bearing among other bearings, the distance between the lower structure and the superstructure supported by the linear bearing is set to a predetermined value with respect to the reference. To be.
In this way, the non-landing of the superstructure of the structure supported by the plurality of bearings can be suppressed, and the linear rolling bearings can be stably moved in the X-axis direction and the Y-axis direction.

Next, the linear motion rolling bearing according to the second embodiment of the present invention will be described with reference to the drawings.
FIG. 7 is a side conceptual diagram of a linear motion rolling bearing according to a second embodiment of the present invention. FIG. 8 is a plan conceptual diagram of a linear motion rolling bearing according to a second embodiment of the present invention. FIG. 9 is an explanatory view of the operation of the rail friction structure according to the second embodiment of the present invention.

The linear motion rolling bearing according to the second embodiment of the present invention includes an upper foundation plate structure 100x, an upper rail structure 210x, an upper block structure 220x, a lower foundation plate structure 100y, a lower rail structure 210y, a lower block structure 220y, and an intermediate plate. It is composed of a structure 300 and an electric circuit 400.
The linear motion rolling bearing according to the second embodiment of the present invention includes an upper foundation plate structure 100x, an upper rail structure 210x, an upper block structure 220x, a lower foundation plate structure 100y, a lower rail structure 210y, a lower block structure 220y, and an intermediate plate. It may be composed of a structure 300, an electric circuit 400, and a rail friction structure 500.
The linear motion rolling bearing according to the second embodiment of the present invention includes an upper foundation plate structure 100x, an upper rail structure 210x, an upper block structure 220x, a lower foundation plate structure 100y, a lower rail structure 210y, a lower block structure 220y, and an intermediate plate. It may be composed of a structure 300, an electric circuit 400, and a foundation plate friction structure 600.
The linear motion rolling bearing according to the second embodiment of the present invention includes an upper foundation plate structure 100x, an upper rail structure 210x, an upper block structure 220x, a lower foundation plate structure 100y, a lower rail structure 210y, a lower block structure 220y, and an intermediate plate. It may be composed of a structure 300, an electric circuit 400, and a rail support structure 230.
The linear motion rolling bearing according to the second embodiment of the present invention includes an upper foundation plate structure 100x, an upper rail structure 210x, an upper block structure 220x, a lower foundation plate structure 100y, a lower rail structure 210y, a lower block structure 220y, and an intermediate plate. It may be composed of a structure 300, an electric circuit 400, a rail friction structure 500, a rail support structure 230, and a foundation plate friction structure 600.

Since the structures of the upper rail structure 210x, the upper block structure 220x, the lower rail structure 210y, and the lower block structure 220y are the same as those of the first embodiment, the description thereof will be omitted, and the intermediate plate structure 300 and the electric circuit 400 will be described. The rail friction structure 500, the rail support structure 230, and the base plate friction structure 600 will be described in order.

The intermediate plate structure 300 is a structure having a plate-like contour.
The intermediate plate structure 300 may have a rubber plate-like contour.
The structure of the intermediate plate structure 300 may be the same as that of the linear bearing bearing according to the first embodiment.

First, the foundation plate structure 100 will be described.
The foundation plate structure 100 may be composed of a pair of upper and lower foundation plate structures and a third foundation plate structure 130.
The upper and lower pair of base plate structures are a first base plate structure 110 and a second base plate structure 120.
The third base plate structure 130 is sandwiched between the first base plate structure 110 and the second base plate structure 120.
The third foundation plate structure 130 is sandwiched between the first foundation plate structure 110 and the second foundation plate structure 120 in the vertical direction.
FIG. 7 shows how the lower foundation plate structure 100y is composed of a pair of upper and lower foundation plate structures and a third foundation plate structure 130.

The third base plate structure 130 may be composed of the piezoelectric element member 131.
Since the structure of the piezoelectric element member 131 is the same as that described in the linear motion rolling bearing according to the first embodiment, the description thereof will be omitted.
The electric circuit 400 may be electrically connected to a pair of electrodes of a plurality of piezoelectric elements of the third base plate structure 130.
When the plate-like thickness of the piezoelectric element member 131 of the third base plate structure 130 is deformed to change, a potential difference is generated between the pair of electrodes of the piezoelectric element 131a of the third base plate structure 130.
When it is determined that an earthquake has occurred, the electric circuit applies a voltage to the pair of electrodes of the piezoelectric element 131a of the third foundation plate structure 130 to change the plate-like thickness of the piezoelectric element member 131 of the third foundation plate structure 130. You may let me.
When it is determined that an earthquake has occurred, the electric circuit 400 is attached to the pair of electrodes of the piezoelectric element 131a of the third foundation plate structure 130 according to the degree of non-landing that occurs between the support and the other support supporting the structure. A voltage may be applied to change the plate-like thickness of the piezoelectric element member 131 of the third base plate structure 130.

Next, the rail support structure 230 will be described.
The linear rolling bearing may include a rail support structure 230.
The rail support structure 230 may have a plate-like structure sandwiched between the rail structure 210 and the foundation plate structure 100.
FIG. 7 shows how the rail support structure 230 is sandwiched between the lower rail structure 210y and the lower base plate structure 100y.
The rail support structure 230 may have the piezoelectric element member 231.
The piezoelectric element member 231 has a structure having a plurality of piezoelectric elements that form a plate-shaped contour and are aligned in the contour.
The piezoelectric element member 231 may be composed of a plurality of piezoelectric elements 231a and a pair of partition plates 231b sandwiching the plurality of piezoelectric elements 231a.
Since the structure of the piezoelectric element member 231 is the same as that described in the description of the straight road rolling bearing according to the first embodiment, the description thereof will be omitted.
The electric circuit 400 may be electrically connected to a pair of electrodes of a plurality of piezoelectric elements 231a of the rail support structure 230.
When the plate-like thickness of the piezoelectric element member 231 of the rail support structure 230 is deformed to change, a potential difference is generated between the pair of electrodes of the piezoelectric element 231a of the rail support structure 230.
When it is determined that an earthquake has occurred, the electric circuit 400 applies a voltage to the pair of electrodes of the piezoelectric element 231a of the rail support structure 230 to change the plate-like thickness of the piezoelectric element member 231 of the rail support structure 230. good.
When it is determined that an earthquake has occurred, the electric circuit 400 applies a voltage to the pair of electrodes of the piezoelectric element 231a of the rail support structure 230 according to the degree of non-landing that occurs between the support and the other support supporting the structure. The plate-like thickness of the piezoelectric element member 231 of the rail support structure 230 may be changed by applying.

Next, the structure of the rail friction structure 500 will be described.
The rail structure 210 may form a rail smooth surface S1 which is a smooth surface extending in the axial direction.
The rail smooth surface S1 may be formed on a surface opposite to the mounting surface, which is a surface to be mounted on the base plate structure 100 of the rail structure 210.
The rail smooth surface S1 may be formed on the side surface of the rail structure 210.
The rail friction structure 500 is composed of a rail friction member 510 and a rail pressing structure 520.
The rail friction member 510 is a friction member that can slide in contact with the rail smooth surface S1.
The rail pressing structure 520 is a structure that is supported by the block structure 220 and presses the rail friction member 510 against the rail smooth surface S1.
FIG. 7 shows how the rail pressing structure 520 fixed to the lower block structure 220y presses the rail friction member 510 against the rail smooth surface S1 formed on the lower rail structure 210y.
In this way, when the lower block structure 220y moves relative to the lower rail structure 210y along the Y axis, a frictional resistance force acts on the lower block structure 220y.

The rail pressing structure 520 may have the piezoelectric element member 521.
The rail pressing structure 520 may be a stack of a piezoelectric element member 521 and a rail elastic member (shown).
The piezoelectric element member 521 is a member having a plurality of piezoelectric elements that form a plate-shaped contour and are aligned in the contour.
Since the structure of the piezoelectric element member 521 is the same as that described in the description of the linear motion rolling bearing according to the first embodiment, the description thereof will be omitted.
The rail elastic member (not shown) is a plate-shaped member made of an elastic material.
The rail elastic member (not shown) is compressed in the assembled state and has a predetermined spring constant.
For example, the piezoelectric element member 521 pushes the rail friction member 510 via a rail elastic member (not shown).
The electric circuit 400 is electrically connected to a pair of electrodes of a plurality of piezoelectric elements 521a of the rail pressing structure 520.
When it is determined that an earthquake has occurred, the electric circuit 400 applies a voltage to the pair of electrodes of the piezoelectric element 521a of the rail pressing structure 520 to change the plate-like thickness of the piezoelectric element member 521 of the rail pressing structure 620.
The electric circuit 400 may change the value of the voltage applied to the pair of electrodes of the piezoelectric element 521a according to the change in the temperature value of the block structure 220 detected by the temperature sensor 420.
The electric circuit 400 increases the value of the voltage applied to the pair of electrodes of the piezoelectric element 521a when the temperature value of the block structure 220 detected by the temperature sensor 420 increases, and the temperature of the block structure 220 detected by the temperature sensor 420 increases. When the value becomes smaller, the value of the voltage applied to the pair of electrodes of the piezoelectric element 521a may be reduced.

Next, the structure of the foundation plate friction structure 600 will be described.
The foundation plate smooth surface S2, which is a smooth surface on which the foundation plate structure 100 extends in the axial direction, may be formed.
The base plate smooth surface S2 may be formed on a surface opposite to the mounting surface, which is a surface to be attached to the superstructure R or the lower structure B of the base plate structure 100.
The base plate friction structure 600 is composed of a base plate friction member 610 and a substrate pressing structure 620.
The base plate friction member 610 is a friction member that can slide in contact with the base plate smooth surface S2.
The base plate pressing structure 620 is a structure that is supported by the block structure 220 and presses the base plate friction member 610 against the base plate smooth surface S2.
FIG. 7 shows how the foundation plate pressing structure 620 supported by the upper block structure 220x presses the foundation plate friction member 610 against the foundation plate smooth surface S2 formed by the upper foundation plate structure 100x.
In this way, when the upper block structure 220x moves relative to the upper base plate structure 100x along the X axis, a frictional resistance force acts on the upper block structure 220x.

The base plate pressing structure 620 may have the piezoelectric element member 621.
The base plate pressing structure 620 may be a laminate of the piezoelectric element member 621 and the base plate elastic member (not shown).
The piezoelectric element member 621 is a member having a plurality of piezoelectric elements that form a plate-shaped contour and are aligned in the contour.
Since the structure of the piezoelectric element member 621 is the same as that described in the description of the linear motion rolling bearing according to the first embodiment, the description thereof will be omitted.
The base plate elastic member (not shown) is a plate-shaped member made of an elastic material.
The base plate elastic member (not shown) is compressed in the assembled state and has a predetermined spring constant.
For example, the piezoelectric element member 521 pushes the base plate friction member 610 via the base plate elastic member (not shown).
The electric circuit 400 is electrically connected to a pair of electrodes of a plurality of piezoelectric elements 621a of the base plate pressing structure 620.
When it is determined that an earthquake has occurred, the electric circuit 400 applies a voltage to the pair of electrodes of the piezoelectric element 621a of the foundation plate pressing structure 620 to change the plate-like thickness of the piezoelectric element member 621 of the foundation plate pressing structure 620.
The electric circuit 400 may change the value of the voltage applied to the pair of electrodes of the piezoelectric element 621a according to the change in the temperature value of the block structure 220 detected by the temperature sensor 420.
The electric circuit 400 increases the value of the voltage applied to the pair of electrodes of the piezoelectric element 621a when the temperature value of the block structure 220 detected by the temperature sensor 420 increases, and the temperature of the block structure 220 detected by the temperature sensor 420 increases. When the value becomes smaller, the value of the voltage applied to the pair of electrodes of the piezoelectric element 621a may be reduced.

Below, the action of the friction structure of the linear motion rolling bearing will be described with reference to the figure, taking the rail friction structure as an example.
FIG. 9 shows the action of the linear motion rolling bearing according to the embodiment of the present invention.
The graph on the left shows the change in frictional force when the block structure 220 reciprocates on the rail structure 210 when the rail pressing structure 520 does not press the rail friction member 510 against the rail smooth surface S1.
The graph on the right shows the frictional force when the block structure 220 reciprocates on the rail structure 210 when the rail pressing structure 520 presses the rail friction member 510 against the rail smooth surface S1.
Here, the horizontal axis of the graph shows the relative movement distance of the block structure 220 with respect to the rail structure 210, and the vertical axis of the graph shows the frictional force at that time.
If the electric circuit 400 does not apply a voltage to the pair of electrodes of the piezoelectric element 521a of the rail pressing structure 520, the rail pressing structure 520 presses the rail friction member 510 against the rail smooth surface S1.
When the electric circuit 400 applies a voltage to the pair of electrodes of the piezoelectric element 521a of the rail pressing structure 520, the rail pressing structure 520 presses the rail friction member 510 against the rail smooth surface S1.

The following shows how a linear rolling bearing is introduced into a building.
FIG. 10 shows how a linear rolling bearing (referred to as “CLB”) is introduced into a building.
Normally, a linear bearing is installed on the foundation of the building.
In addition, linear rolling bearings may be used as TMD bearings.

By adopting the linear motion rolling bearing of the present invention, it is possible to solve the problem of the conventional linear motion rolling bearing.
In addition, a damper function can be added to the linear motion rolling bearing.
In addition, even if it is shaken for a long time due to an earthquake, the temperature rise of the linear bearing can be suppressed.
Good support function and cycle adjustment function can be maintained.

Further, as described above, the linear motion rolling bearing according to the present invention has the following effects depending on its configuration.
The lower structure B supports the lower foundation plate structure 100y, the lower foundation plate structure 100y supports the lower rail structure 210y extending in the Y-axis direction, and the lower rail structure 210y allows the lower block structure 220y to move relative to the Y-axis direction. The lower block structure 220y is connected to the upper block structure 220x with the intermediate plate structure 300 in between, the upper rail structure 210x guides the upper block structure 220x in the X-axis direction so as to be relatively movable, and the upper rail structure 210x is the upper part. Since the structure is supported by the foundation plate structure 100x and the upper foundation plate structure 100x supports the upper structure R, the structure can move in the horizontal direction when an earthquake occurs.
The piezoelectric element member 310 of the intermediate plate structure 300 has a plurality of piezoelectric elements 310a in a plate-like contour, and when the plate-like thickness of the piezoelectric element member 310 changes, a potential difference occurs between the pair of electrodes of the piezoelectric element 310a, and the potential difference occurs. As a result, a current flows through the electric circuit 400, so that when an earthquake occurs and the structure moves in the horizontal direction, a potential difference is applied to the electric circuit due to vertical vibration.
A voltage is applied to a pair of electrodes of the piezoelectric element of the intermediate plate structure according to the degree of non-landing that occurs between the earthquake and other bearings that support the structure. Since the thickness of the plate is changed, the function of reducing the unevenness between the bearings and other bearings can be realized.
A third base plate member 130 having a piezoelectric element member 131 having a plurality of piezoelectric elements aligned in a plate-shaped contour is sandwiched between the first base plate structure 110 and the second base plate structure 120, and the piezoelectric element member When the plate-like thickness of 131 changes, a potential difference is generated between the pair of terminals of the piezoelectric element 231a. Therefore, when an earthquake occurs and the structure moves in the horizontal direction, a current flows through the electric circuit 400 due to vertical vibration.
When an earthquake occurs, a voltage is applied to the pair of electrodes of the piezoelectric element 131a of the third foundation plate structure 130 according to the degree of non-landing with other bearings that support the structure, and the piezoelectric element member 131 Since the thickness of the plate is changed, it is possible to realize a function of eliminating the unevenness between the bearings supporting the structure.
The rail support structure 230 has a piezoelectric element member 231 having a plurality of piezoelectric elements 231a aligned in a plate-shaped contour, and when the plate-shaped thickness of the piezoelectric element member 231 changes, a potential difference is applied to the pair of terminals of the piezoelectric element 231a. When an earthquake occurs and the structure moves in the horizontal direction, current flows through the electric circuit due to vertical vibration.
When an earthquake occurs, based on the value detected by the non-landing detection sensor, the voltage is applied to the pair of electrodes of the piezoelectric element 231a of the rail support structure 230 according to the degree of non-landing between the bearing and other bearings that support the structure. Is applied to change the plate-like thickness of the piezoelectric element member 231. Therefore, it is possible to provide a function of eliminating the unevenness between the bearings that support the structure.
Since the rail pressing mechanism 520 supported by the block structure 220 presses the rail friction member 510 against the rail smooth surface S1 formed on the rail structure 210, the rail is moved when an earthquake occurs and the structure moves relative to the horizontal direction. The frictional force generated between the friction member 510 and the smooth rail surface S1 can dampen the vibration of the structure.
The rail pressing structure 520 has a plurality of piezoelectric elements 521a in the plate-like contour of the piezoelectric element member 521, and applies a voltage to a pair of electric powers of the plurality of piezoelectric elements 521a to increase the plate-like thickness of the piezoelectric element member 521. Since the voltage is changed, the voltage applied to the pair of electrodes of the piezoelectric element 521a can be changed to adjust the frictional force generated between the rail friction member 510 and the rail smooth surface S1.
Since the foundation plate pressing mechanism 620 supported by the block structure 220 presses the foundation plate friction member 610 against the foundation plate smooth surface S2 formed on the foundation plate structure 100, an earthquake occurs and the structure moves in the horizontal direction. When relatively moved, the frictional force generated between the foundation plate friction member 610 and the foundation plate smooth surface S2 can dampen the vibration of the structure.
The base plate pressing structure 620 has a plurality of piezoelectric elements 621a in the plate-like contour of the piezoelectric element member 621, and a voltage is applied to a pair of electric powers of the plurality of piezoelectric elements 621a to apply a voltage to the plate-like thickness of the piezoelectric element member 621. Therefore, the voltage applied to the pair of electrodes of the piezoelectric element 621a can be changed to adjust the frictional force generated between the base plate friction member 610 and the base plate smooth surface S2.
Since the value of the voltage applied to the pair of electrodes of the piezoelectric elements 521a and 621a is changed according to the change in the temperature value of the block structure detected by the temperature sensor 420, friction is applied according to the temperature value of the block structure. The function of changing the force can be realized.

The present invention is not limited to the embodiments described above, and various modifications can be made without departing from the gist of the invention.
The impedance of the electric circuit may be changed according to the change in the maximum amplitude value of the acceleration acting on the structure.
The capacitance of the capacitor of the electric circuit may be changed according to the change of the maximum amplitude value of the acceleration acting on the structure.
The current generated in the electric circuit due to the potential difference generated in the pair of terminals of the piezoelectric element may be stored in the capacitor and used.
Although the lower foundation plate structure 100y has been described with an example composed of the first foundation plate structure 110, the second foundation plate structure 120, and the third foundation plate structure 130, the present invention is not limited thereto. For example, this structure may be adapted to the upper base plate structure 100x or both.
The example described in which the rail support structure 230 supports the lower rail structure 210y has been described, but the present invention is not limited to this. For example, the structure may be adapted to the upper rail structure 210x or both.
The rail friction structure 500 has been described with an example of applying the lower rail structure 210y, but the present invention is not limited to this. For example, the structure may be adapted to the upper rail structure 210x or both.
The rail smooth surface S1 is provided on the opposite side of the surface fixed to the base plate structure 100 of the rail structure 210, but the present invention is not limited to this. For example, the rail smooth surface S1 may be provided on both side surfaces or both side surfaces of the rail structure 210.
Although the example in which the base plate friction structure 600 is provided in the upper base plate structure 100x has been described, the present invention is not limited to this. For example, the base plate friction structure 600 may be provided in the lower base plate structure 100y or both.

CLB Linear rolling support S1 Rail smooth surface S2 Base plate smooth surface R Upper structure B Lower structure X X axis Y Y axis 100 Base plate structure 100 x Upper base plate structure 100y Lower base plate structure 110 First foundation plate structure 120 Second foundation Plate structure 130 Third base plate structure 131 Piezoelectric element member 131a Piezoelectric element 131b Partition plate 140 Anchor bolt 210 Rail structure 210x Upper rail structure 210y Lower rail structure 220 Block structure 220x Upper block structure 220y Lower block structure 230 Rail support structure 231 Piezoelectric element Member 231a Piezoelectric element 231b Partition plate 300 Intermediate plate structure 310 Piezoelectric element member 310a Piezoelectric element 310b Partition plate 310c Piezoelectric rubber plate 320 Metal plate material 400 Electric circuit 410 Electric circuit body 420 Temperature sensor 430 Landless detection sensor 500 Rail friction structure 510 Rail friction Member 520 Rail pressing structure 521 Piezoelectric element member 521a Piezoelectric element 521b Partition plate 522 Rail elastic member 600 Base plate friction structure 610 Base plate friction member 620 Piezoelectric element member 621 Piezoelectric element 621b Partition plate 622 Base plate elastic member

Japanese Patent Application Laid-Open No. 08-240033

Claims (14)

It is a linear motion rolling bearing among a plurality of bearings having different vertical rigidity provided between the upper structure and the lower structure, which are a pair of upper and lower structures, and supports the structure.
The virtual X-axis and the virtual Y-axis are orthogonal in the horizontal plane,
The superstructure, which is the base plate structure that supports the superstructure,
The upper rail structure, which is a rail structure supported by the upper base plate structure and extending in the X-axis direction,
An upper block structure, which is a block structure that is guided to the upper rail structure so as to be relatively movable in the X-axis direction by rolling a series of iron balls,
The lower base plate structure, which is the base plate structure supported by the lower structure,
The lower rail structure, which is a rail structure supported by the lower base plate structure and extending in the Y-axis direction,
A lower block structure, which is a block structure that is guided to the lower rail structure so as to be relatively movable in the Y-axis direction by rolling a series of iron balls,
An intermediate plate structure, which is a structure with a plate-like contour,
Electric circuit and
With
The upper block structure and the lower block structure are connected with the intermediate plate structure interposed therebetween.
The intermediate plate structure has a piezoelectric element member having a plurality of piezoelectric elements that form a plate-like contour and are aligned in the contour.
The electric circuit is electrically connected to a pair of electrodes of the plurality of piezoelectric elements having the intermediate plate structure.
When the plate-like thickness of the piezoelectric element member having the intermediate plate structure changes, a potential difference is generated between the pair of electrodes of the piezoelectric element having the intermediate plate structure.
When it is determined that an earthquake has occurred, the electric circuit can apply a voltage to the pair of electrodes of the piezoelectric element of the intermediate plate structure according to the degree of non-landing that occurs between the support and the other support supporting the structure. Then, the plate-like thickness of the piezoelectric element member having the intermediate plate structure is changed.
Linear rolling bearings that are characterized by this. When it is determined that an earthquake has occurred, the substructure and the superstructure supported by the linear rolling bearing are based on the distance between the substructure and the superstructure supported by a specific bearing among the other bearings supporting the structure. The electric circuit applies a voltage to the pair of electrodes of the piezoelectric element of the intermediate plate structure so that the separation distance becomes a predetermined value with respect to the reference, and the plate shape of the piezoelectric element member of the intermediate plate structure. Change the thickness of
The linear bearing bearing according to claim 1, wherein the bearing is characterized by the above. The first base plate structure is a pair of upper and lower plate-like structures, and is a plate-like structure sandwiched between the first base plate structure, the second base plate structure, the first base plate structure, and the second base plate structure. Has a three-base plate structure,
The third base plate structure has a piezoelectric element member having a plurality of piezoelectric elements that form a plate-like contour and are aligned in the contour.
The electric circuit is electrically connected to a pair of electrodes of the plurality of piezoelectric elements of the third base plate structure.
When the plate-like thickness of the piezoelectric element member of the third base plate structure is deformed to change, a potential difference is generated between the pair of electrodes of the piezoelectric element of the third base plate structure.
When it is determined that an earthquake has occurred, the electric circuit applies a voltage to the pair of electrodes of the piezoelectric element of the third base plate structure according to the degree of non-landing that occurs between the support and the other support supporting the structure. To change the plate-like thickness of the piezoelectric element member of the third base plate structure.
The linear bearings according to claim 2, characterized in that. When it is determined that an earthquake has occurred, the substructure and the superstructure supported by the linear rolling bearing are based on the distance between the substructure and the superstructure supported by a specific bearing among the other bearings supporting the structure. The electric circuit applies a voltage to a pair of electrodes of the piezoelectric element of the third base plate structure so that the separation distance becomes a predetermined value with respect to the reference. Change the plate-like thickness of the member,
The linear bearings according to claim 3, characterized in that. It is provided with a rail support structure which is a plate-like structure sandwiched between the rail structure and the base plate structure.
The rail support structure has a piezoelectric element member having a plurality of piezoelectric elements that form a plate-like contour and are aligned in the contour.
The electric circuit is electrically connected to a pair of electrodes of the plurality of piezoelectric elements of the rail support structure.
When the plate-like thickness of the piezoelectric element member of the rail support structure is deformed to change, a potential difference is generated between the pair of electrodes of the piezoelectric element of the rail support structure.
When it is determined that an earthquake has occurred, the electric circuit can apply a voltage to the pair of electrodes of the piezoelectric element of the rail support structure according to the degree of non-landing that occurs between the support and the other support of the structure. Then, the plate-like thickness of the piezoelectric element member of the rail support structure is changed.
The linear bearing bearing according to claim 4, wherein the bearing is characterized by the above. When it is determined that an earthquake has occurred, the substructure and the superstructure supported by the linear rolling bearing are based on the distance between the substructure and the superstructure supported by a specific bearing among the other bearings supporting the structure. The electric circuit applies a voltage to the pair of electrodes of the piezoelectric element of the rail support structure so that the separation distance becomes a predetermined value with respect to the reference, and the plate shape of the piezoelectric element member of the rail support structure. Change the thickness of
The linear bearing bearing according to claim 5, characterized in that. The rail structure forms a rail smooth surface which is a smooth surface extending in the axial direction.
A rail friction structure having a rail friction member that can slide in contact with the rail smooth surface and a rail pressing structure that is supported by the block structure and presses the rail friction member against the rail smooth surface.
The linear motion rolling bearing according to claim 6, wherein the bearing is provided with. The rail pressing structure has a piezoelectric element member having a plurality of piezoelectric elements that form a plate-like contour and are aligned in the contour.
The electric circuit is electrically connected to a pair of electrodes of the plurality of piezoelectric elements of the rail pressing structure.
When it is determined that an earthquake has occurred, the electric circuit applies a voltage to the pair of electrodes of the piezoelectric element of the rail pressing structure to change the plate-like thickness of the piezoelectric element member of the rail pressing structure.
The linear bearing bearing according to claim 7, characterized in that. The foundation plate structure forms a foundation plate smooth surface which is a smooth surface extending in the axial direction.
A base plate friction structure having a base plate friction member that can slide in contact with the base plate smooth surface and a base plate pressing structure that is supported by the block structure and presses the base plate friction member against the base plate smooth surface.
The linear motion rolling bearing according to claim 8, wherein the bearing is provided with. The base plate pressing structure has a piezoelectric element member having a plurality of piezoelectric elements that form a plate-like contour and are aligned in the contour.
The electric circuit is electrically connected to a pair of electrodes of the plurality of piezoelectric elements of the base plate pressing structure.
When it is determined that an earthquake has occurred, the electric circuit applies a voltage to the pair of electrodes of the piezoelectric element of the base plate pressing structure to change the plate-like thickness of the piezoelectric element member of the base plate pressing structure.
The linear bearing bearing according to claim 9, wherein the bearing is characterized by the above. It is a linear motion rolling bearing among a plurality of bearings having different vertical rigidity provided between the upper structure and the lower structure, which are a pair of upper and lower structures, and supports the structure.
The virtual X-axis and the virtual Y-axis are orthogonal in the horizontal plane,
The superstructure, which is the base plate structure that supports the superstructure,
The upper rail structure, which is a rail structure supported by the upper base plate structure and extending in the X-axis direction,
An upper block structure, which is a block structure that is guided to the upper rail structure so as to be relatively movable in the X-axis direction,
The lower base plate structure, which is the base plate structure supported by the lower structure,
The lower rail structure, which is a rail structure supported by the lower base plate structure and extending in the Y-axis direction,
A lower block structure, which is a block structure that is guided to the lower rail structure so as to be relatively movable in the Y-axis direction,
Electric circuit and
With
The upper block structure and the lower block structure are connected to each other.
The first base plate structure is a pair of upper and lower plate-like structures, and is a plate-like structure sandwiched between the first base plate structure, the second base plate structure, the first base plate structure, and the second base plate structure. Has a three-base plate structure,
The third base plate structure has a piezoelectric element member having a plurality of piezoelectric elements that form a plate-like contour and are aligned in the contour.
The electric circuit is electrically connected to a pair of electrodes of the plurality of piezoelectric elements of the third base plate structure.
When the plate-like thickness of the piezoelectric element member of the third base plate structure is deformed to change, a potential difference is generated between the pair of electrodes of the piezoelectric element of the third base plate structure.
When it is determined that an earthquake has occurred, the electric circuit applies a voltage to the pair of electrodes of the piezoelectric element of the third base plate structure according to the degree of non-landing that occurs between the support and the other support supporting the structure. To change the plate-like thickness of the piezoelectric element member of the third base plate structure.
Linear rolling bearings that are characterized by this. When it is determined that an earthquake has occurred, the substructure and the superstructure supported by the linear rolling bearing are based on the distance between the substructure and the superstructure supported by a specific bearing among the other bearings supporting the structure. The electric circuit applies a voltage to a pair of electrodes of the piezoelectric element of the third base plate structure so that the separation distance becomes a predetermined value with respect to the reference. Change the plate-like thickness of the member,
The linear bearing bearing according to claim 11, characterized in that. It is a linear motion rolling bearing among a plurality of bearings having different vertical rigidity provided between the upper structure and the lower structure, which are a pair of upper and lower structures, and supports the structure.
The virtual X-axis and the virtual Y-axis are orthogonal in the horizontal plane,
The superstructure, which is the base plate structure that supports the superstructure,
The upper rail structure, which is a rail structure supported by the upper base plate structure and extending in the X-axis direction,
An upper block structure, which is a block structure that is guided to the upper rail structure so as to be relatively movable in the X-axis direction by rolling a series of iron balls,
The lower base plate structure, which is the base plate structure supported by the lower structure,
The lower rail structure, which is a rail structure supported by the lower base plate structure and extending in the Y-axis direction,
A lower block structure, which is a block structure that is guided to the lower rail structure so as to be relatively movable in the Y-axis direction by rolling a series of iron balls,
A rail support structure, which is a plate-like structure sandwiched between the rail structure and the base plate structure,
Electric circuit and
With
The upper block structure and the lower block structure are connected to each other.
The rail support structure has a piezoelectric element member having a plurality of piezoelectric elements that form a plate-like contour and are aligned in the contour.
The electric circuit is electrically connected to a pair of electrodes of the plurality of piezoelectric elements of the rail support structure.
When the plate-like thickness of the piezoelectric element member of the rail support structure is deformed to change, a potential difference is generated between the pair of electrodes of the piezoelectric element of the rail support structure.
When it is determined that an earthquake has occurred, the electric circuit can apply a voltage to the pair of electrodes of the piezoelectric element of the rail support structure according to the degree of non-landing that occurs between the support and the other support of the structure. Then, the plate-like thickness of the piezoelectric element member of the rail support structure is changed.
Linear rolling bearings that are characterized by this. When it is determined that an earthquake has occurred, the substructure and the superstructure supported by the linear rolling bearing are based on the distance between the substructure and the superstructure supported by a specific bearing among the other bearings supporting the structure. The electric circuit applies a voltage to the pair of electrodes of the piezoelectric element of the rail support structure so that the separation distance becomes a predetermined value with respect to the reference, and the plate shape of the piezoelectric element member of the rail support structure. Change the thickness of
The linear bearing bearing according to claim 13, characterized in that.

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