JP2023044907A - Seismic isolation or vibration damping mechanism - Google Patents

Abstract

To provide a seismic isolation or vibration damping mechanism for seismic isolation or vibration damping.SOLUTION: In place of a conventional seismic isolation or vibration damping mechanism for seismic isolation or damping, a mechanism includes a pedestal having a pedestal body and rail members, and a bogie having a bogie body, an axle shaft, and rolling elements, the mechanism further has N (N=2, 3 ...) axle outer diameters, where the outer circumference, which is the portion of the axle that passes through and rotatably supports the rolling elements, has at least two outer diameters that are stepped along the direction of extension of the rotation shaft center; also has N (N=2, 3 ...) rolling element bores, where the inner circumference, which is the portion of the rolling element that is penetrated and supported by the axle, has at least two bores that are stepped along the direction of extension of the rotation axis center; the mechanism moves along the specific direction guided by the rail member with the rolling elements rolling and sliding between the outer and inner circumference surfaces in contact with the rail surface.SELECTED DRAWING: Figure 1

Description

The present invention relates to a seismic isolation or vibration damping mechanism for supporting a supported body. In particular, the present invention relates to a seismic isolation or damping mechanism that supports a supported body and isolates or dampens movement in a specific direction.

A seismic isolation or damping mechanism may be used to support a single or multiple supported objects.
For example, a rolling element that is supported on either side of the supported body or the support so as to be able to roll only around a predetermined axis, and a rolling element that is attached to the other side of the supported body and the support. and a guide member that contacts and extends in the rolling direction, and when the supported body moves horizontally relative to the support, the distance between the rolling axis of the rolling body and the horizontal plane fixed to the guide member is the maximum. A device is used that gradually increases when the rolling element rolls at least within a predetermined range from a small reference position.
A wheel consists of an axle and rolling elements.
The outer peripheral portion of the axle passes through the inner peripheral portion of the rolling element, and the axle supports the rolling element rotatably around the rotation axis.
In this manner, as the wheel moves horizontally from the reference position, a restoring force is generated to return to the reference position, and acts as a spring element in the so-called vibration system.
Inserting a friction member such as a bush between the rolling element and the axle acts as a damper element in a so-called vibration system.
When an earthquake or the like occurs and vibrational acceleration acts on the support, the spring element and the damper element absorb and attenuate the vibrational energy, thereby suppressing the acceleration acting on the supported body.

Desired vibration characteristics can be selected by selecting the characteristics of the spring element and the damper element.
There has been a demand for a seismic isolation or damping mechanism with better damping characteristics than the above structures.

SUMMARY OF THE INVENTION The present invention has been devised in view of the problems described above, and aims to provide a seismic isolation or vibration damping mechanism capable of exhibiting a seismic isolation function or a vibration damping function with a simple configuration.

In order to achieve the above object, there is provided a seismic isolation or damping mechanism for supporting a supported object and for isolating or damping movement in a specific direction according to the present invention, comprising: a base body; a platform having a rail member forming a rail surface extending in a specific direction by means of a frame; an axle supported by the bogie body with a rotation axis extending in a direction perpendicular to the specific direction when viewed from above; a rolling element that is rotatably supported around a rotation axis and guided on a circular rolling surface in contact with the rail surface so as to be movably rollable in the specific direction; Alternatively, one of the trucks supports the supported body, and the outer peripheral portion of the axle, which is the portion that penetrates the rolling elements and supports the rolling elements so as to be rotatable, has at least two outer surfaces that are uneven along the direction in which the axis of rotation extends. N (N=2, 3, . It has N (N=2, 3, . and the inner peripheral portion slide and are guided by the rail member to move along the specific direction.

According to the configuration of the present invention, the gantry has a gantry body and a rail member fixed to the gantry body and forming a rail surface extending in a specific direction when viewed from above. A bogie includes an axle supported by the bogie main body and a rotation axis extending in a direction orthogonal to a specific direction when viewed from above, and a circular roller supported by the axle so as to be rotatable around the rotation axis. and a rolling element that is guided with a moving surface in contact with the rail surface and that can roll movably in the specific direction. One of the platform and the truck supports the supported body. An outer peripheral portion, which is a portion of the axle that penetrates and rotatably supports the rolling elements, has at least two outer diameters N (N=2, 3 . ) axle diameter. N (N=2, 3, . has a rolling element inner diameter of The rolling element rolls on the rolling surface in contact with the rail surface, slides between the outer peripheral portion and the inner peripheral portion, and moves along the specific direction while being guided by the rail member.
As a result, the outer circumference of the axle with N axle outer diameters slides on the inner circumference with N rolling element inner diameters of the rolling element, and as it moves along a specific direction, the so-called damper element in the vibration system fulfill the work.

A seismic isolation or damping mechanism according to embodiments 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.

In the seismic isolation or damping mechanism according to the embodiment of the present invention, the rolling element is arranged so that the rolling surface is aligned with the rotation axis at a position corresponding to the uneven position of the N rolling element inner diameters of the inner peripheral portion. Circumferentially extending grooves are formed along which divide into N partial rolling surfaces.
According to the configuration of the above-described embodiment, the rolling elements form the N partial rolling surfaces along the rotation axis at positions corresponding to the uneven positions of the N rolling element inner diameters on the inner peripheral portion. Circumferentially extending grooves are formed dividing the moving surfaces.
As a result, the rolling elements are easily elastically deformed along the grooves, and the outer peripheral portion having N axle outer diameters of the sliding axle comes into contact with the inner peripheral portion having N rolling element inner diameters of the rolling body, It realizes the action of a damper element in a so-called vibration system as it moves along a specific direction.

In an embodiment of the present invention, the seismic isolation or damping mechanism is configured so that the rolling element rotates the rolling surface along the rotation axis at a position corresponding to a stepped position of the outer diameter of N axles on the outer peripheral portion. Circumferentially extending grooves are formed which divide into N partial rolling surfaces.
According to the configuration of the above embodiment, the rolling elements make N partial rolling motions along the rotation axis at positions corresponding to the uneven positions of the N axle outer diameters on the rolling surface of the outer peripheral portion. Circumferentially extending grooves are formed separating the faces.
As a result, the rolling elements are easily elastically deformed along the grooves, and the outer peripheral portion having N axle outer diameters of the sliding axle comes into contact with the inner peripheral portion having N rolling element inner diameters of the rolling body, It realizes the action of a damper element in a so-called vibration system according to movement along a specific direction.

In the seismic isolation or damping mechanism according to the embodiment of the present invention, the rolling element is arranged so that the rolling surface is aligned with the rotation axis at a position corresponding to the uneven position of the N rolling element inner diameters of the inner peripheral portion. It has N partial rolling elements which are freely rotatable relative to each other and which form N partial rolling surfaces, which are surfaces to divide along.
With the configuration of the above-described embodiment, the N partial rolling elements of the rolling element align the rolling surface with the rotation axis at positions corresponding to the uneven positions of the N rolling element inner diameters of the inner peripheral portion. N partial rolling surfaces, which are surfaces that divide along, are formed on each and can rotate freely relative to each other.
As a result, the N partial rolling elements tend to tilt easily, and the outer peripheral portion having the N axle outer diameters of the sliding axle comes into contact with the inner peripheral portion having the N rolling element inner diameters of the rolling element, resulting in a specific As it moves along the direction, it realizes the action of a damper element in a so-called vibration system.

In the seismic isolation or damping mechanism according to the embodiment of the present invention, the rolling elements cause the rolling surfaces to move along the rotation axis at positions corresponding to the uneven outer diameters of the N axles on the outer peripheral portion. It has N partial rolling elements which are freely rotatable with respect to each other and which are formed with N partial rolling surfaces, which are surfaces divided into two parts.
With the configuration of the above-described embodiment, the N partial rolling elements of the rolling element are aligned with the rolling surface on the rotation axis at positions corresponding to the uneven positions of the N axle outer diameters on the outer peripheral portion. N partial rolling surfaces, which are surfaces that divide along, are formed on each and can rotate freely relative to each other.
As a result, the N partial rolling elements tend to tilt easily, and the outer peripheral portion having the N axle outer diameters of the sliding axle comes into contact with the inner peripheral portion having the N rolling element inner diameters of the rolling element, resulting in a specific As it moves along the direction, it realizes the action of a damper element in a so-called vibration system.

In the seismic isolation or damping mechanism according to the embodiment of the present invention, the rolling element is arranged so that the rolling surface is aligned with the rotation axis at a position corresponding to the uneven position of the N rolling element inner diameters of the inner peripheral portion. It has N partial rolling elements which are freely rotatable with respect to each other, each forming N partial rolling surfaces which are divided along each other, and N-1 thrust washers which are fitted to the N partial rolling elements. .
With the configuration of the above embodiment,
The N partial rolling elements of the rolling element divide the rolling surface along the rotation axis at positions corresponding to the uneven positions of the N rolling element inner diameters of the inner peripheral portion. are formed on each of the partial rolling surfaces so that they can rotate freely relative to each other. The N-1 thrust washers of said rolling bodies are threaded over the N partial rolling bodies.
As a result, the N partial rolling elements tend to tilt easily, and the outer peripheral portion having the N axle outer diameters of the sliding axle comes into contact with the inner peripheral portion having the N rolling element inner diameters of the rolling element, resulting in a specific As it moves along the direction, it realizes the action of a damper element in a so-called vibration system.

In the seismic isolation or damping mechanism according to the embodiment of the present invention, the rolling elements cause the rolling surfaces to move along the rotation axis at positions corresponding to the uneven outer diameters of the N axles on the outer peripheral portion. It has N partial rolling elements which are freely rotatable with respect to each other, and N-1 thrust washers which are fitted to the N partial rolling elements.
According to the configuration of the above embodiment, the N partial rolling elements of the rolling element form the rolling surface along the rotation axis at positions corresponding to the uneven positions of the N axle outer diameters on the outer peripheral portion. N partial rolling surfaces are formed on each of the rolling surfaces and can freely rotate relative to each other. The N-1 thrust washers of said rolling bodies are threaded over the N partial rolling bodies.
As a result, the N partial rolling elements tend to tilt easily, and the outer peripheral portion having the N axle outer diameters of the sliding axle comes into contact with the inner peripheral portion having the N rolling element inner diameters of the rolling element, resulting in a specific It realizes the action of a damper element in a so-called vibration system as it moves along the direction.

In the seismic isolation or damping mechanism according to the embodiment of the present invention, when viewed from above, the rail member contacts the rolling surface of the rolling member within a stroke in which the rolling member can move on the rail member. Then, as the position of the support portion, which is the portion that supports the rolling element, moves along the specific direction, it changes along the direction orthogonal to the specific direction.
With the configuration of the above embodiment, the rail member contacts the rolling surface of the rolling element to support the rolling element within a stroke that allows the rolling element to move on the rail member when viewed from above. As the position of the support point, which is the point where the support is made, changes along the specific direction, it changes along the direction orthogonal to the specific direction.
As a result, it realizes the action of a damper element whose damping function changes in a so-called vibration system as it moves along a specific direction.

In the seismic isolation or damping mechanism according to the embodiment of the present invention, when viewed from above, the rail member contacts the rolling surface of the rolling member within a stroke in which the rolling member can move on the rail member. As the position of the support portion, which is the portion that supports the rolling element, moves along the specific direction, the position that supports one of the N partial rolling surfaces and the N portions It changes between the position supporting the other said partial rolling surface of the rolling surface.
With the configuration of the above embodiment, the rail member contacts the rolling surface of the rolling element to support the rolling element within a stroke that allows the rolling element to move on the rail member when viewed from above. As the position of the supporting portion, which is the portion where the rolling surface is supported, moves along the specific direction, the position supporting one of the N partial rolling surfaces and the other of the N partial rolling surfaces It changes between positions that support the partial rolling surface.
As a result, it realizes the action of a damper element whose damping function changes in a so-called vibration system as it moves along a specific direction.

In the seismic isolation or damping mechanism according to the embodiment of the present invention, when viewed from above, the rail member contacts the rolling surface of the rolling member within a stroke in which the rolling member can move on the rail member. As the position of the support portion, which is the portion that supports the rolling element, moves along the specific direction, the position that supports one of the N partial rolling surfaces and the N portions that support the partial rolling surface. changing between a position supporting another one of the partial rolling surfaces of the rolling surface and a position supporting a plurality of the partial rolling surfaces of the N partial rolling surfaces;
With the configuration of the above embodiment, the rail member contacts the rolling surface of the rolling element to support the rolling element within a stroke that allows the rolling element to move on the rail member when viewed from above. As the position of the supporting portion, which is the portion where and a position supporting a plurality of said partial rolling surfaces of N said partial rolling surfaces.
As a result, it realizes the action of a damper element whose damping function changes in a so-called vibration system as it moves along a specific direction.

In the seismic isolation or damping mechanism according to the embodiment of the present invention, when viewed from above, the rail member is fixed to the gantry body and forms a base surface, and the base member is in contact with and supported by the base surface. a rail surface member forming a rail surface, said rail surface member being replaceably attached to said base member;
With the configuration of the above embodiment, the rail member has a base member fixed to the gantry body and forming a base surface, and a rail surface member supported in contact with the base surface of the base member and forming the rail surface. . The rail surface member is replaceably attached to the base member.
As a result, it is possible to easily change the damping performance of a damper element whose damping function changes in a so-called vibration system.

In the seismic isolation or damping mechanism according to the embodiment of the present invention, when viewed from above, the rail member is fixed to the gantry body and forms a base surface, and the base member is in contact with and supported by the base surface. a rail surface member forming the rail surface;
The base surface is flat, and the rail surface curves along an arc with the center of curvature on the side where the rolling elements are present, when viewed along a horizontal axis orthogonal to a specific direction.
With the configuration of the above embodiment, the rail member has a base member fixed to the gantry body and forming a base surface, and a rail surface member supported in contact with the base surface of the base member and forming the rail surface. . The base surface is flat. The rail surface curves along an arc having the center of curvature on the side where the rolling elements are present when viewed along a horizontal axis orthogonal to a specific direction.
As a result, a so-called vibration system spring element can be realized.

In the seismic isolation or damping mechanism according to the embodiment of the present invention, when viewed from above, the rail member is fixed to the gantry body and forms a base surface, and the base member is in contact with and supported by the base surface. and a rail surface member forming a rail surface, and when viewed along a horizontal axis orthogonal to a specific direction, the base surface is an arc having a center of curvature on the side where the rolling elements that roll on the rail surface are present. A plate-shaped member that curves along and the rail surface member has a certain thickness,
With the configuration of the above embodiment, the rail member has a base member fixed to the gantry body and forming a base surface, and a rail surface member supported in contact with the base surface of the base member and forming the rail surface. . When viewed along a horizontal axis orthogonal to a specific direction, the base surface curves along an arc having a center of curvature on the side where the rolling elements rolling on the rail surface are present. The rail surface member is a plate-shaped member having a constant thickness.
As a result, a so-called vibration system spring element can be realized.

In the seismic isolation or damping mechanism according to the embodiment of the present invention, when viewed from above, the rolling element is made of a rolling element main body forming the rolling contact surface and a friction material, and is fixed to the rolling element main body to form the inner peripheral portion. and a friction member forming a
According to the configuration of the above embodiment, the rolling element has a rolling element main body forming the rolling surface and a friction member made of a friction material and fixed to the rolling element main body forming the inner peripheral portion.
As a result, the damper performance of the so-called vibration system damper element is stabilized.

In the seismic isolation or damping mechanism according to the embodiment of the present invention, when viewed from above, the axle is made of an axle body supported by the bogie body and a friction material fixed to the axle body to form the outer periphery. and a member.
With the configuration of the above embodiment, the axle has an axle body supported by the bogie body and a friction member made of a friction material and fixed to the axle body to form the outer peripheral portion.
As a result, the damper performance of the so-called vibration system damper element is stabilized.

As described above, the seismic isolation or damping mechanism according to the present invention has the following effects due to its configuration.
Either a platform with rail members or a bogie with rolling elements supported by axles supports the supported body, and the axles have N axle contours that are stepped along the direction in which the axis of rotation extends on the outer circumference of the axle. In addition, the rolling elements have N rolling element inner diameters that are uneven along the direction in which the rotation axis extends on the inner peripheral portion, and the rolling elements contact the rail surface and roll on the rolling surface. Since the outer peripheral portion and the inner peripheral portion are slidably guided by the rail member to move along the specific direction, the outer peripheral portion having N axle outer shapes of the axle has N rolling elements. A damper element in a so-called vibration system can be realized as it slides on the inner peripheral portion having the inner diameter of the rolling element and moves along a specific direction.
Circumferentially, the rolling element divides the rolling surface into N partial rolling surfaces along the rotation axis at positions corresponding to the uneven positions of N rolling element inner diameters on the inner circumference. Since the extending groove is formed, the rolling elements are easily elastically deformed along the groove, and the outer peripheral portion having the N axle outer diameters of the sliding axle has the N rolling element inner diameters of the rolling elements. can be realized as a damper element in a so-called vibration system as it moves along a specific direction.
The rolling elements extend circumferentially dividing the rolling surface into N partial rolling surfaces along the rotation axis at positions corresponding to N uneven outer diameters of the axle on the outer circumference. Since the grooves are formed, the rolling elements are easily elastically deformed along the grooves, and the outer peripheral portion of the sliding axle having the outer diameters of N axles corresponds to the inner diameters of the N rolling elements. A so-called damper element in a vibration system can be realized by moving in a specific direction.
The N partial rolling elements of the rolling element divide the rolling surface along the rotation axis at positions corresponding to the uneven positions of the N rolling element inner diameters of the inner peripheral portion. are formed on each of the partial rolling surfaces so that they can rotate freely with respect to each other. A damper element in a so-called vibration system can be realized as it comes into contact with the inner peripheral portion having N rolling element inner diameters of the moving body and moves along a specific direction.
The N partial rolling elements of the rolling element are surfaces that divide the rolling surface along the rotation axis at positions corresponding to the uneven positions of the N axle outer diameters on the outer peripheral portion. are formed on each of the partial rolling surfaces so that they can rotate freely with respect to each other. A damper element in a so-called vibration system can be realized as it comes into contact with the inner peripheral portion having N rolling element inner diameters of the moving body and moves along a specific direction.
The N partial rolling elements of the rolling element divide the rolling surface along the rotation axis at positions corresponding to the uneven positions of the N rolling element inner diameters of the inner peripheral portion. are formed on each of the partial rolling surfaces so that they can rotate freely with each other, and the N−1 thrust washers of the rolling elements are pushed by the N partial rolling elements, so that the N partial rolling elements becomes easy to tilt, and the outer circumference of the sliding axle with N axle outer diameters comes into contact with the inner circumference of the rolling element with N rolling element inner diameters. A damper element in the system can be realized.
The N partial rolling elements of the rolling element divide the rolling surface along the rotation axis at positions corresponding to the uneven positions of the N axle outer diameters of the outer peripheral portion. Partial rolling surfaces are formed on each so that they can rotate freely with respect to each other, and the N-1 thrust washers of the rolling elements are pushed by the N partial rolling elements, so that the N partial rolling elements are It tends to tilt easily, and the outer peripheral portion of the sliding axle, which has N axle outer diameters, comes into contact with the inner peripheral portion of the rolling element, which has N rolling element inner diameters, and moves along a specific direction. A damper element in a vibration system can be realized.
As the position of the support portion moves along the specific direction within the stroke in which the rolling element can move on the rail member, the position of the supporting portion changes along the direction perpendicular to the specific direction. It is possible to realize a damper element that changes its damping function in a so-called vibrating system as it moves along.
A position where one of the N partial rolling surfaces is supported as the position of the supporting portion moves along the specific direction within a stroke in which the rolling element can move on the rail member. and a position supporting the other partial rolling surface of the N partial rolling surfaces. It is possible to realize a damper element that
Seen from above, the partial rolling of one of the N partial rolling surfaces as the position of the support point moves along the specific direction within a stroke in which the rolling element can move on the rail member. a position for supporting a surface, a position for supporting another one of the partial rolling surfaces of the N partial rolling surfaces, and a position for supporting a plurality of the partial rolling surfaces of the N partial rolling surfaces. , it is possible to realize a so-called damper element whose damping function in a vibration system changes as it moves along a specific direction.
Since the rail member forming the rail surface is replaceably attached to the base member having the base surface, it is possible to easily change the damping performance of a damper element whose damping function changes in a so-called vibration system.
The rail member has a base member that is fixed to the gantry body and forms a flat base surface, and a rail member that is supported in contact with the base surface and forms the rail surface. , the rail surface is curved along an arc having the center of curvature on the side where the rolling elements are present, so that a so-called vibration system spring element can be realized.
The rail member is fixed to the frame main body, and the base surface is in contact with the base member forming the base surface curved along the arc having the center of curvature on the side of the rolling element rolling on the rail surface. A rail surface member that is supported and forms the rail surface is provided, and the rail member is a plate-like member having a constant thickness, so that a so-called vibration system spring element can be realized.
Since the rolling element has a rolling element main body forming the rolling surface and a friction member made of a friction material and fixed to the rolling element main body forming the inner peripheral portion, a so-called vibration system damper element is provided. damper performance is stabilized.
Since the axle has an axle body supported by the bogie body and a friction member made of a friction material and fixed to the axle body to form the outer peripheral portion, the damper performance of the so-called vibration system damper element is improved. Stabilize.
Therefore, it is possible to provide a seismic isolation or vibration damping mechanism capable of exhibiting a seismic isolation function or a vibration damping function with a simple configuration.

1 is an overall view of a seismic isolation or damping mechanism according to an embodiment of the present invention; FIG. 1 is a first partial view of a seismic isolation or damping mechanism according to an embodiment of the present invention; FIG. FIG. 2 is a second partial view of the seismic isolation or damping mechanism according to the embodiment of the present invention; FIG. 3 is a third partial view of the seismic isolation or damping mechanism according to the embodiment of the present invention; FIG. 4 is a fourth partial view of the seismic isolation or damping mechanism according to the embodiment of the present invention;

DETAILED DESCRIPTION OF THE INVENTION Embodiments for carrying out the present invention will be described below.
First, a seismic isolation or damping device according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is an overall view of a seismic isolation or damping mechanism according to an embodiment of the present invention. FIG. 2 is a first partial view of the seismic isolation or damping mechanism according to the embodiment of the present invention. FIG. 3 is a second partial view of the seismic isolation or damping mechanism according to the embodiment of the present invention. FIG. 4 is a third partial view of the seismic isolation or damping mechanism according to the embodiment of the present invention. FIG. 5 is a fourth partial view of the seismic isolation or damping mechanism according to the embodiment of the present invention.

A seismic isolation or vibration damping device according to an embodiment of the present invention is a device that supports the supported body 50 and isolates or damps movement in a specific direction.
A seismic isolation or vibration damping device according to an embodiment of the present invention is composed of a pedestal 100 and a carriage 200 .
One of the platform 100 and the cart 200 supports the supported body.
FIG. 1 shows how the carriage 200 supports the supported body 50 .

The gantry 100 is composed of a gantry body 110 and rail members 120 .
The gantry 100 may be composed of a gantry body 110 and a plurality of rail members 120 .
FIG. 1 shows how the gantry 100 is composed of one gantry body 110 and two rail members 120 .

Truck 200 Consists of Truck Main Body 210 , Axle 220 , and Rolling Element 230
One axle 220 supports one rolling element 230 rotatably around the rotation axis.
FIG. 1 shows how the truck 200 is composed of one truck main body 210, four axles 220, and four rolling elements 230. As shown in FIG.

The cradle body 110 is the main structure of the cradle 100 .
The rail member 120 is a member that forms a rail surface S that is fixed to the gantry body 110 and extends in a specific direction X when viewed from above.

Truck body 210 is the main structure of truck 200 .
Axle 220 extends rotation axis Z in a direction perpendicular to specific direction X when viewed from above, and is supported by carriage body 210 .
The rolling element 230 is rotatably supported by the axle 220 about the rotation axis Z, and is guided by the rail surface S in contact with the circular rolling surface H so that the rolling element 230 can roll movably in the specific direction X. .

The outer peripheral portion K of the axle 220 has N (N=2, 3, . . . ) axle outer diameters r1, r2, . ·have.
Here, the outer peripheral portion K is a portion through which the rolling element 230 is rotatably supported.
The inner peripheral portion L of the rolling element 230 has N (N=2, 3, . ···have.
Here, the inner peripheral portion L is a portion that the axle 220 penetrates and is supported.
The outer peripheral portion K of the axle 220 slidably supports the inner peripheral portion L of the rolling element 230 .
A portion having N rolling element inner diameters q1, q2, . slidably supported.
The rolling element 230 rolls on the rolling surface H in contact with the rail surface S, slides between the outer peripheral portion K and the inner peripheral portion L, and moves along the specific direction X guided by the rail member 120 .
3A, 3B, and 3C, the outer peripheral portion K of the axle 220 has two outer diameters r1 and r2, which are stepped along the direction in which the rotation axis Z extends, The inner peripheral portion L of the rolling element 230 is shown to have two inner diameters q1 and q2 that are stepped along the direction in which the rotation axis Z extends. A portion having two rolling element inner diameters q1 and q2 on the outer peripheral portion of the axle 220 slidably supports a portion having two rolling element inner diameters q1 and q2 on the inner peripheral portion L of the rolling element 230. is shown.

A circumference where the rolling element 230 divides the rolling surface H into N partial rolling surfaces along the rotation axis Z at positions corresponding to the uneven positions of the N rolling element inner diameters on the inner circumference L A groove M extending in a shape may be formed.
For example, the rolling elements 230 are arranged so that the rolling surfaces H are aligned along the rotation axis Z at positions where the rolling surface H is substantially aligned with the uneven positions of the N rolling element inner diameters of the inner peripheral portion L. Circumferentially extending grooves M are formed which divide the partial rolling surfaces.
In FIG. 3B, the rolling elements 230 are arranged along the rotation axis Z at positions corresponding to the uneven positions of the N rolling element inner diameters q1 and q2 of the inner peripheral portion L on the rolling surface H. It is shown that a circumferentially extending groove M is formed to divide the two partial rolling surfaces H1, H2.

The rolling elements 230 divide the rolling surface H into N partial rolling surfaces along the rotation axis Z at positions corresponding to the N uneven outer diameters of the axle on the outer periphery. An extending groove M may be formed.
For example, the rolling elements 230 are arranged along the rotation axis Z at positions where the rolling contact surface H is substantially aligned with the outer diameters of the N axles on the outer circumference. A circumferentially extending groove M is formed which divides the partial rolling surfaces.
In FIG. 3B, two rolling elements 230 are arranged along the rotation axis Z at positions corresponding to the uneven positions of the N axle outer diameters r1 and r2 on the outer peripheral portion of the rolling surface H. is formed with a circumferentially extending groove M that divides the partial rolling contact surfaces H1 and h2.

The rolling element 230 divides the rolling surface H along the rotational axis Z at positions corresponding to the uneven positions of the N rolling element inner diameters on the inner circumference L. N partial rolling surfaces can be formed on each and can rotate freely relative to each other.
For example, the rolling element 230 divides the rolling contact surface H along the rotation axis Z at positions substantially coinciding with the uneven positions of the N rolling element inner diameters along the rotation axis Z. It has N partial rolling elements that are freely rotatable with respect to each other, each having N partial rolling surfaces.
3(C), the rolling element 230 divides the rolling surface H along the rotation axis Z at positions corresponding to the uneven positions of the two rolling element inner diameters q1 and q2 on the inner peripheral portion L. It is shown to have two partial rolling elements 231, 232 which are respectively formed with two partial rolling surfaces H1, H2 which are surfaces and which are freely rotatable relative to each other.

The rolling element 230 has N partial rolling surfaces, which are surfaces divided along the rotation axis Z at positions corresponding to the uneven positions of the N axle outer diameters of the outer peripheral portion K on the rolling surface H. can be formed on each and can rotate freely relative to each other.
For example, the rolling elements 230 are divided along the rotation axis Z at positions substantially aligned along the rotation axis Z with the uneven positions of the N axle outer diameters of the outer peripheral portion K on the rolling surface H. It has N partial rolling elements that are freely rotatable with respect to each other, each having N partial rolling surfaces.
FIG. 3(C) shows a surface where the rolling element 230 divides the rolling surface H along the rotation axis Z at positions corresponding to the uneven positions of the two axle outer diameters r1 and r2 of the outer peripheral portion K. It is shown to have two partial rolling elements 231, 232 which are respectively formed with two partial rolling surfaces H1, h2 which are freely rotatable relative to each other.

The rolling element 230 divides the rolling surface H along the rotational axis Z at positions corresponding to the uneven positions of the N rolling element inner diameters on the inner circumference L. N partial rolling surfaces , respectively, which are freely rotatable relative to each other, and .
In FIG. 3(C), the rolling element 230 rotates along the rotation axis Z at a position corresponding to the uneven position of the two rolling element inner diameters q1 and q2 on the inner peripheral portion L. N partial rolling elements 231 and 232 which are formed with two partial rolling surfaces H1 and h2 as dividing surfaces and which can freely rotate with each other, and one piece inserted between the N partial rolling elements 231 and 232. A state with a thrust washer 231c is shown.

The rolling elements 230 form N partial rolling surfaces, which are surfaces that divide the rolling surface H along the rotation axis Z at positions corresponding to the N uneven outer diameters of the axle on the outer peripheral portion K. It may have N partial rolling elements formed on each and freely rotatable with respect to each other and N-1 thrust washers fitted over the N partial rolling elements.
FIG. 3(C) shows a surface where the rolling element 230 divides the rolling surface H along the rotation axis Z at positions corresponding to the uneven positions of the two axle outer diameters r1 and r2 of the outer peripheral portion K. Two partial rolling elements 231, 232 which are respectively formed with two partial rolling surfaces H1, H2 and are freely rotatable with respect to each other, and a thrust washer inserted between the two partial rolling elements 231, 232. 231c is shown.

As viewed from above, the position of the support point P changes along the direction perpendicular to the specific direction X within the stroke in which the rolling element 230 can move on the rail member 120 .
The support location P is a location where the rail member 120 contacts the rolling surface K of the rolling element 230 to support the rolling element 230 .
The rail member 120 does not come into contact with the rolling surface K of the rolling element 230 at a location deviated from the support location P.

When viewed from above, one of the N partial rolling surfaces is supported as the position of the support point P moves along a specific direction within a stroke in which the rolling element 230 can move on the rail member 120. and a position supporting the other partial rolling surface of the N partial rolling surfaces.

When viewed from above, one of the N partial rolling surfaces is shifted as the position of the support point P moves along the specific direction X within the stroke in which the rolling element 230 can move on the rail member 120. A supporting position, a position supporting another partial rolling surface of the N partial rolling surfaces, and a position supporting a plurality of partial rolling surfaces of the N partial rolling surfaces. good too.
FIG. 2 shows the position where one of the two partial rolling surfaces H1 and H2 is supported and the N partial rolling surfaces H1 and H2 as the position of the supporting point P moves along the specific direction X. and the position of supporting a plurality of partial rolling surfaces H1, H2 of two partial rolling surfaces H1, H2.

The rail member 120 may be composed of a base member 121 and a rail surface member 122 .
The base member 121 is a member that is fixed to the gantry body 110 and forms the base surface B. As shown in FIG.
The rail surface member 122 is a member that forms a rail surface S that is supported in contact with the base surface B of the base member.
A rail surface member 122 may be replaceably attached to the base member 121 .
The rail surface member 122 may be replaceably attached to the base member 121 by bolt-on.

The base surface B is a flat surface, and the rail surface S is curved along an arc having a center of curvature Q on the side where the rolling elements that roll on the rail surface are present when viewed along a horizontal axis orthogonal to a specific direction. may
In FIG. 4A, the base surface B is a flat surface, and the center of curvature of the rail surface S is on the side where the rolling elements 230 that roll on the rail surface S are located along the horizontal axis orthogonal to the specific direction. It is shown curving along an arc with Q.

When viewed along a horizontal axis orthogonal to the specific direction X, the base surface B is curved along an arc having a center of curvature Q on the side where the rolling elements 230 rolling on the rail surface S are present, and the rail surface member 122 may be a plate-shaped member having a constant thickness.
In FIG. 4(B), when viewed along the horizontal axis orthogonal to the specific direction X, the base surface B is along the arc having the center of curvature Q on the side where the rolling elements 230 rolling on the rail surface S are located. It is shown that the rail surface member 122 is a plate-shaped member having a certain thickness.

The rolling element 230 may be composed of a rolling element main body 230a and a friction member 230b.
The rolling element main body 230a is a member that forms the rolling surface H. As shown in FIG.
The friction member 230b is a member that is made of a friction material and fixed to the rolling element body 230a to form the inner peripheral portion L. As shown in FIG.
The rolling element 230 may be composed of the rolling element body 230a and the friction member 230b, and the axle 220 may be composed of the axle body 220a.
In this case, the friction member 230b and the axle body 220a slide to generate a frictional force.

The axle 220 may be composed of an axle body 220a and a friction member 220b.
The axle body 220 a is a member supported by the truck body 210 .
The friction member 220b is a member that is made of a friction material and fixed to the axle body 220a to form the outer peripheral portion K. As shown in FIG.
The rolling element 230 may be composed of the rolling element body 230a, and the axle 220 may be composed of the axle body 220a and the friction member 220b.
In this case, the rolling element main body 230a and the friction member 220b slide to generate a frictional force.

The rolling element 230 may be composed of a rolling element body 230a and a friction member 230b, and the axle 220 may be composed of an axle body 220a and a friction member 220b.
In this case, the friction member 230b and the friction member 220b slide to generate a frictional force.

As described above, the seismic isolation or damping mechanism according to the embodiment of the present invention has the following effects.
One of the pedestal 100 having the rail member 120 or the carriage 200 having the rolling elements supported by the axle 220 supports the supported body. An axle 220 having an outer shape of the axle rotatably supports rolling elements 230 having N rolling element inner diameters that are uneven along the direction in which the rotation axis Z extends, and the rolling elements 230 are the rolling surfaces. H rolls in contact with the rail surface S, the outer peripheral portion and the inner peripheral portion slide, and are guided by the rail member 120 so as to move along the specific direction X. An outer peripheral portion having a diameter slides on an inner peripheral portion having N rolling element inner diameters of the rolling element 230, and as it moves along the specific direction X, a so-called damper element in a vibration system can be realized.
The rolling element 230 divides the rolling surface H into N partial rolling surfaces H along the rotation axis Z at positions corresponding to the uneven positions of the N rolling element inner diameters on the inner circumference. Since the grooves M are formed so as to extend in the direction of the grooves M, the rolling elements 230 are easily elastically deformed along the grooves M, and the outer peripheral portion of the sliding axle 220 having N axle outer diameters is the rolling element 230. A damper element in a so-called vibration system can be realized as it contacts an inner peripheral portion having N rolling element inner diameters and moves along a specific direction X.
The rolling elements 230 divide the rolling contact surface H into N partial rolling contact surfaces H along the rotation axis Z at positions corresponding to the N uneven outer diameters of the axle on the outer periphery. Since the extending groove M is formed, the rolling element 230 is easily elastically deformed along the groove M, and the outer peripheral portion having the N axle outer diameters of the sliding axle 220 is N of the rolling element 230 . A damper element in a so-called vibration system can be realized as it contacts the inner peripheral portion having the inner diameter of the rolling element and moves along the specific direction X.
The N partial rolling elements of the rolling element 230 divide the rolling surface H along the rotation axis Z at positions corresponding to the uneven positions of the N rolling element inner diameters on the inner circumference. are formed on each of the partial rolling surfaces H so that they can rotate freely with respect to each other, the N partial rolling elements are easily inclined, and the outer peripheral portion having the N axle outer diameters of the sliding axle 220 is in contact with the inner peripheral portion of the rolling element 230 having N rolling element inner diameters, and as it moves along the specific direction X, a so-called damper element in a vibration system can be realized.
The N partial rolling elements of the rolling element 230 are N surfaces that divide the rolling surface H along the rotation axis Z at positions corresponding to the uneven positions of the N axle outer diameters on the outer periphery. are formed on each of the partial rolling surfaces H so that they can rotate freely with respect to each other, the N partial rolling elements are easily inclined, and the outer peripheral portion having the N axle outer diameters of the sliding axle 220 is in contact with the inner peripheral portion of the rolling element 230 having N rolling element inner diameters, and as it moves along the specific direction X, a so-called damper element in a vibration system can be realized.
The N partial rolling elements of the rolling element 230 divide the rolling surface H along the rotation axis Z at positions corresponding to the uneven positions of the N rolling element inner diameters on the inner circumference. are formed on each of the partial rolling surfaces H so that they can rotate freely with each other. The moving body tends to tilt easily, and the outer peripheral portion having N axle outer diameters of the sliding axle 220 comes into contact with the inner peripheral portion having N rolling element inner diameters of the rolling element 230, and moves along the specific direction X. A damper element in a so-called vibration system can be realized according to
The N partial rolling elements of the rolling element 230 divide the rolling surface H along the rotation axis Z at positions corresponding to the uneven positions of the N axle outer diameters on the outer periphery. A partial rolling surface H is formed on each so that they can rotate freely, and the N−1 thrust washers of the rolling element 230 are pushed by the N partial rolling elements, so that the N partial rolling elements easily tilts, and the outer peripheral portion having N axle outer diameters of the sliding axle 220 comes into contact with the inner peripheral portion having N rolling element inner diameters of the rolling element 230, and moves along the specific direction X Therefore, a so-called damper element in a vibration system can be realized.
As the position of the support point P moves along the specific direction X within the stroke in which the rolling element 230 can move on the rail member 120, the specific direction X It is possible to realize a damper element that changes its damping function in a so-called vibrating system as it moves along.
One of the N partial rolling surfaces H, H1, H2, . . . and the position supporting the other partial rolling surface H of the N partial rolling surfaces H1, H2, . Therefore, it is possible to realize a so-called damper element with a variable damping function in a vibration system.
As viewed from above, one of N partial rolling surfaces H1, H2, . Positions supporting partial rolling surfaces H1, H2, . . . , positions supporting other partial rolling surfaces H1, h2, . Since the moving surfaces H1, H2, . . . Damper elements with varying functions can be realized.
Since the rail member 120 forming the rail surface S is replaceably attached to the base member 121 having the base surface B by bolt-on, the damping performance of the damper element whose damping function changes in the so-called vibration system can be easily changed. .
A rail member 120 has a base member 121 that is fixed to a gantry body 110 and forms a planar base surface B, and a rail member 120 that is supported in contact with the base surface B and forms a rail surface S, and is orthogonal to a specific direction X. When viewed along the horizontal axis, the rail surface S is curved along an arc having the center of curvature Q on the side where the rolling elements 230 are present, so that a so-called vibration system spring element can be realized.
The rail member 120 is fixed to the gantry body 110, and the base member 121 and the foundation form a base surface B that curves along an arc having a center of curvature Q on the side where the rolling elements 230 that roll on the rail surface S are present. Since the rail member 120 is supported in contact with the surface B and forms the rail surface S, and the rail member 120 is a plate-like member having a constant thickness, a so-called vibration system spring element can be realized. .
Since the rolling element 230 has a rolling element main body 230a forming the rolling surface H and a friction main body 230b made of a friction material and fixed to the rolling element main body 230a to form an inner peripheral portion, a so-called vibration system damper is provided. The damper performance of the element stabilizes.
Since the axle 220 has an axle body 220a supported by the bogie body 210 and a friction member 220b made of a friction material and fixed to the axle body 220a to form the outer peripheral part, the damper performance of a so-called vibration system damper element is achieved. stabilizes.

The present invention is not limited to the embodiments described above, and various modifications are possible without departing from the gist of the invention.

X Specific direction Z Axis of rotation S Rail surface H Rolling surface H1, H2 Partial rolling surface K Outer circumference L Inner circumference R Radius of curvature P Support point M Groove B Foundation surface Q Curvature center r1 Outer diameter of first axle r2 Outer diameter of two axles q1 First rolling element inner diameter q2 Second rolling element inner diameter 50 Supported body 100 Frame 110 Frame main body 120 Rail member 121 Foundation member 122 Rail surface member 200 Truck 210 Truck main body 220 Axle 220a Axle main body 220b Friction member 230 Moving body 230a Rolling element main body 230b Friction member 231 First partial rolling element 231a First partial rolling element main body 231b First friction member 232 Second partial rolling element 232a Second partial rolling element main body 232b Second friction member 231c Thrust washer

Special table 2011-38628

Claims (17)

A seismic isolation or damping mechanism that supports a supported body and isolates or damps movement in a specific direction,
a pedestal having a pedestal body and a rail member fixed to the pedestal body and forming a rail surface extending in a specific direction when viewed from above;
When viewed from the top of the bogie body, the axis of rotation extends in a direction orthogonal to a specific direction, and an axle supported by the bogie body and a circumferential rolling surface supported on the axle so as to be rotatable around the axis of rotation are provided. a carriage having a rolling element that is guided in contact with the rail surface and can roll movably in the specific direction;
with
One of the pedestal or the carriage supports a supported body,
An outer peripheral portion, which is a portion of the axle that penetrates and rotatably supports the rolling elements, has at least two outer diameters N (N=2, 3 . ) axle diameter,
N (N=2, 3, . has a rolling element inner diameter of
The rolling element rolls on the rolling surface in contact with the rail surface, slides between the outer peripheral portion and the inner peripheral portion, and is guided by the rail member to move along the specific direction.
A seismic isolation or damping mechanism characterized by: Circumferentially, the rolling element divides the rolling surface into N partial rolling surfaces along the rotation axis at positions corresponding to the uneven positions of N rolling element inner diameters on the inner circumference. formed with an extending groove,
A seismic isolation or damping mechanism according to claim 1, characterized in that: The rolling elements extend circumferentially dividing the rolling surface into N partial rolling surfaces along the rotation axis at positions corresponding to N uneven outer diameters of the axle on the outer circumference. grooved,
A seismic isolation or damping mechanism according to claim 1, characterized in that: Each of the rolling elements has N partial rolling surfaces, which are surfaces that divide the rolling surface along the rotation axis at positions corresponding to the uneven positions of the N rolling element inner diameters on the inner circumference. with N partial rolling elements which are formed in and can rotate freely with respect to each other,
A seismic isolation or damping mechanism according to claim 1, characterized in that: Each of the rolling elements has N partial rolling surfaces, which are surfaces that divide the rolling surface along the rotation axis at positions corresponding to the uneven positions of the outer diameter of the N axles on the outer peripheral portion. with N partial rolling elements formed and freely rotatable relative to each other,
A seismic isolation or damping mechanism according to claim 1, characterized in that: Each of the rolling elements has N partial rolling surfaces, which are surfaces that divide the rolling surface along the rotation axis at positions corresponding to the uneven positions of the N rolling element inner diameters on the inner circumference. N partial rolling elements which are formed in and are freely rotatable relative to each other, and N-1 thrust washers which are fitted over the N partial rolling elements,
A seismic isolation or damping mechanism according to claim 1, characterized in that: Each of the rolling elements has N partial rolling surfaces, which are surfaces that divide the rolling surface along the rotation axis at positions corresponding to the uneven positions of the outer diameter of the N axles on the outer peripheral portion. having N partial rolling elements formed and freely rotatable relative to each other and N-1 thrust washers fitted over the N partial rolling elements,
A seismic isolation or damping mechanism according to claim 1, characterized in that: Viewed from above, the position of a support point where the rail member contacts the rolling surface of the rolling element to support the rolling element within the stroke in which the rolling element can move on the rail member. changes along a direction orthogonal to the specified direction as moves along the specified direction;
A seismic isolation or damping mechanism according to any one of claims 1 to 7, characterized in that: Viewed from above, the position of a support point where the rail member contacts the rolling surface of the rolling element to support the rolling element within the stroke in which the rolling element can move on the rail member. moves along the specific direction, a position supporting one of the N partial rolling surfaces and a position supporting the other of the N partial rolling surfaces varies between
A seismic isolation or damping mechanism according to claim 8, characterized in that: Viewed from above, the position of a support point where the rail member contacts the rolling surface of the rolling element to support the rolling element within the stroke in which the rolling element can move on the rail member. moves along the specific direction, a position that supports one of the N partial rolling surfaces and a position that supports the other partial rolling surface of the N partial rolling surfaces. and a position supporting a plurality of the partial rolling surfaces of the N partial rolling surfaces,
The seismic isolation or damping mechanism according to claim 9, characterized in that: The rail member has a base member that is fixed to the gantry body and forms a base surface, and a rail surface member that is supported in contact with the base surface of the base member and forms the rail surface,
the rail surface member is replaceably attached to the base member;
A seismic isolation or damping mechanism according to claim 10, characterized in that: The rail member has a base member that is fixed to the gantry body and forms a base surface, and a rail surface member that is supported in contact with the base surface of the base member and forms the rail surface,
the base surface is flat,
When viewed along a horizontal axis orthogonal to a specific direction, the rail surface curves along an arc having a center of curvature on the side where the rolling elements rolling on the rail surface are present,
A seismic isolation or damping mechanism according to claim 11, characterized in that: The rolling element has a rolling element body forming the rolling surface and a friction member made of a friction material and fixed to the rolling element body forming the inner circumference,
A seismic isolation or damping mechanism according to claim 12, characterized in that: The axle has an axle body supported by the bogie body and a friction member made of a friction material and fixed to the axle body to form the outer circumference,
A seismic isolation or damping mechanism according to claim 13, characterized in that: The rail member has a base member that is fixed to the gantry body and forms a base surface, and a rail surface member that is supported in contact with the base surface of the base member and forms the rail surface,
the base surface is flat,
When viewed along a horizontal axis orthogonal to a specific direction, the rail surface curves along an arc having a center of curvature on the side where the rolling elements rolling on the rail surface are present,
A seismic isolation or damping mechanism according to claim 1, characterized in that: The rolling element has a rolling element body forming the rolling surface and a friction member made of a friction material and fixed to the rolling element body forming the inner circumference,
A seismic isolation or damping mechanism according to claim 1, characterized in that: The axle has an axle body supported by the bogie body and a friction member made of a friction material and fixed to the axle body to form the outer circumference,
A seismic isolation or damping mechanism according to claim 1, characterized in that:

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