JP2017106499A - Vibration control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration control device capable of vibrating a vibration body along an optional direction in a plane at high speed and long strokes.SOLUTION: A vibration control device 10 includes a vibration body 16, a restoring force mechanism 20, a vertical slide mechanism 22, a primary coil body 26 provided below the vibration body 16 as a first member, a secondary conductor 28 as a second member, a retaining mechanism 24 for maintaining a gap between the primary coil body 26 and the secondary conductor 28 in a predetermined range, a vibration detecting section 30 for detecting vibration of an upper structure 12 to a lower structure 14 in a direction of XY plane, and a control section 32 for controlling an induction type linear motor. The control section 32 supplies an electric current to a conductor wire 34 based on the vibration in the direction of the XY plane detected by the vibration detecting section 30, and vibrates the primary coil body 26 to the secondary conductor 28 in a direction cancelling the vibration.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vibration damping device.

  The damping device is generally used for earthquake countermeasures for buildings, and includes a vibrating body and a drive mechanism that drives the vibrating body in a direction that attenuates vibrations generated by the earthquake. Examples of the drive mechanism include a mechanism combining a rotary motor and a ball screw or a gear, a mechanism using an electric actuator, and a mechanism using a synchronous linear motor. Patent Document 1 describes a vibration damping device using a synchronous linear motor as the drive mechanism.

Japanese Patent No. 2994900

  However, in a vibration damping device having a drive mechanism in which a rotary motor and a ball screw or gear are combined, the conversion efficiency when converting the rotary motion of the rotary motor into linear motion with the ball screw or gear is low. The speed with respect to the structure of the vibrating body driven by is limited. In a vibration damping device having a drive mechanism in which a rotary motor and a ball screw are combined, the speed of the vibrating body driven by the drive mechanism is limited depending on the specifications of the ball screw. Further, in a vibration damping device having a drive mechanism using an electric actuator, the cost increases remarkably as the cylinder used for the electric actuator is lengthened. Therefore, the speed of the vibrating body driven by the drive mechanism with respect to the structure is increased. Not suitable for shaker.

  In the vibration damping device described in Patent Document 1, since a magnet is used for a synchronous linear motor that is a driving mechanism, a limitation is imposed on the driving force applied to the vibrating body by the driving mechanism. Further, in this vibration damping device, since the rail is used for the synchronous linear motor, the moving direction with respect to the structure of the vibrating body driven by the driving mechanism is limited to one direction.

  For this reason, none of the above vibration damping devices are suitable for vibrating a vibrating body with a high speed and a long stroke with a drive mechanism, and therefore there is a limit to the response to long-period earthquakes that have recently been required. .

  This invention is made in view of the above, Comprising: It is providing the damping device which can vibrate a vibrating body with a high speed and a long stroke with respect to a structure in the arbitrary directions in a plane. Objective.

  In order to solve the above-described problems and achieve the object, a vibration damping device of the present invention is connected to a vibrating body supported in a state capable of vibrating in a structure, and a vertical lower surface of the vibrating body. A first member that moves in connection with the vibrating body; a second member that is fixed to a surface that is spaced below the first member and extends in a horizontal direction on the surface of the structure; and A holding mechanism that holds a member and the second member within a certain distance, a vibration detection unit that detects a vibration of the vibrating body in the plane direction with respect to the structure, and the vibration detection unit. A controller that vibrates the first member relative to the second member in a direction that cancels the detected vibration in the direction of the plane, and one of the first member and the second member is , A primary coil body provided such that the axial direction is parallel to the plane, The other of the first member and the second member is in a direction perpendicular to the axial direction with respect to the primary coil body and in the plane according to the magnetic force generated by the primary coil body. It is a secondary conductor that generates force in the direction.

  This vibration damping device has a first member that moves in conjunction with a vibrating body as a mover, and has a second member that is fixed to the structure as a stator, so that the first member is relative to the second member. By vibrating, the vibrating body can be vibrated in any direction within a plane at a high speed and a long stroke with respect to the structure.

  In the vibration damping device of the present invention, it is preferable that the primary coil body includes a first coil and a second coil having an axial direction different from that of the first coil. As a result, the primary coil body can be moved in any direction in the plane with respect to the secondary conductor, so that the vibrating body can be vibrated in any direction in the plane with respect to the structure.

  The vibration damping device of the present invention may further include a first member guide mechanism that is provided between the lower part of the vibrating body and the first member and guides the movement of the first member relative to the vibrating body. preferable. Thereby, it is possible to prevent the first member from falling off the vibrating body.

  In the vibration damping device of the present invention, the holding mechanism includes a first direction holding mechanism that holds the primary coil body and the secondary conductor so as to be relatively movable in a first direction parallel to the plane; It is preferable that the primary coil body and the secondary conductor include a second direction holding mechanism that holds the first coil body and the secondary conductor so as to be relatively movable in a second direction that is parallel to the plane and orthogonal to the first direction. Thereby, since the 1st member can be moved in the arbitrary direction in a plane to the 2nd member, maintaining between the 1st member and the 2nd member in the tolerance of an appropriate interval, The movement of the first member relative to the second member can be stabilized.

  In the vibration damping device according to the aspect of the invention, it is preferable that the holding mechanism includes a ball bearing that holds the primary coil body and the secondary conductor so as to be relatively movable in a direction parallel to the plane. . Thereby, since the 1st member can be moved in the arbitrary direction in a plane to the 2nd member, maintaining between the 1st member and the 2nd member in the tolerance of an appropriate interval, The movement of the first member relative to the second member can be stabilized.

  The vibration damping device of the present invention preferably further includes a restoring force mechanism that applies a restoring force to the vibrating body when the vibrating body vibrates. Thereby, since restoring force acts on a vibrating body, the power consumption in the movement with respect to the 2nd member of a 1st member can be suppressed.

  In the vibration damping device according to the aspect of the invention, the restoring force mechanism includes a support member that is provided between the structure and the vibration body and supports the vibration body so as to be swingable with respect to the structure. It is preferable. As a result, the restoring force of the pendulum can be applied to the vibrating body supported by the support member.

  In the vibration damping device having the first direction holding mechanism and the second direction holding mechanism according to the present invention, the restoring force mechanism is provided between the vibrating body and the first direction holding mechanism, and between the first direction holding mechanism and the first direction holding mechanism. It is preferable to have a coil spring provided between the two-direction holding mechanism and supporting the vibrating body so as to vibrate in the direction of the plane with respect to the structure. Thereby, the elastic force of a coil spring can be made to act on a vibrating body supported by the coil spring as a restoring force.

  In the vibration damping device having the ball bearing of the present invention, it is preferable that the restoring force mechanism has a downwardly convex curved surface provided on the upper surface of the second member fixed to the structure. Thereby, the restoring force by the downwardly convex curved surface can be exerted on the vibrating body.

  In the vibration damping device having no first direction holding mechanism and second direction holding mechanism or ball bearing according to the present invention, the holding mechanism is provided between the structure and the vibrating body, and It is preferable to have a support member that is swingably supported with respect to the structure, and a downwardly convex curved surface provided on the upper surface of the second member fixed to the structure. As a result, the first member can move in any direction within the plane with respect to the second member while maintaining the distance between the first member and the second member within a certain distance. The movement of the member relative to the second member can be stabilized. In addition, since a restoring force acts on the vibrating body supported by the support member, it is possible to suppress power consumption in movement of the first member relative to the second member.

  ADVANTAGE OF THE INVENTION According to this invention, the damping device which can vibrate a vibrating body to the arbitrary directions in a plane with a high speed and a long stroke with respect to a structure can be obtained.

FIG. 1 is a diagram showing the configuration of the vibration damping device according to the first embodiment of the present invention. FIG. 2 is a diagram showing a configuration of a holding mechanism used in the vibration damping device according to the first embodiment of the present invention. FIG. 3 is a diagram showing details of the configuration of the holding mechanism used in the vibration damping device according to the first embodiment of the present invention. FIG. 4 is a diagram showing a configuration of a primary coil body and a secondary conductor used in the vibration damping device according to the first embodiment of the present invention. FIG. 5 is a diagram showing the configuration of the vibration damping device according to the second embodiment of the present invention. FIG. 6 is a diagram illustrating the configuration of the vibration damping device according to the third embodiment of the present invention. FIG. 7 is a diagram illustrating a configuration of a restoring force mechanism used in the vibration damping device according to the third embodiment of the present invention. FIG. 8 is a diagram showing the configuration of the vibration damping device according to the fourth embodiment of the present invention. FIG. 9 is a diagram showing the configuration of the vibration damping device according to the fifth embodiment of the present invention. FIG. 10 is a diagram illustrating the configuration of the vibration damping device according to the sixth embodiment of the present invention. FIG. 11 is a diagram illustrating the configuration of the vibration damping device according to the seventh embodiment of the present invention. FIG. 12 is a diagram showing the configuration of the vibration damping device according to the eighth embodiment of the present invention.

  Hereinafter, a vibration damping device according to an embodiment of the present invention will be described in detail with reference to the drawings. Note that the following description of the embodiment does not limit the present invention, and can be implemented with appropriate modifications.

  FIG. 1 is a diagram showing a configuration of a vibration damping device 10 according to a first embodiment of the present invention. FIG. 2 is a diagram showing a configuration of the holding mechanism 24 used in the vibration damping device 10 according to the first embodiment of the present invention. FIG. 3 is a diagram showing details of the configuration of the holding mechanism 24 used in the vibration damping device 10 according to the first embodiment of the present invention. FIG. 4 is a diagram showing the configuration of the primary coil body 26 and the secondary conductor 28 used in the vibration damping device 10 according to the first embodiment of the present invention. Hereinafter, the vibration damping device 10 will be described with reference to FIGS. 1 to 4.

  The damping device 10 is provided between buildings as an earthquake countermeasure for buildings such as high-rise buildings. As shown in FIG. 1, the vibration damping device 10 is provided inside a building. Specifically, it is provided between the upper structure 12 of the building and the lower structure 14 provided on the lower side in the vertical direction of the upper structure 12. That is, the vibration damping device 10 is provided in a space between the upper structure 12 and the lower structure 14. The upper structure 12 and the lower structure 14 vibrate together.

  The vibration damping device 10 includes a vibrating body 16, a restoring force mechanism 20, a vertical slide mechanism 22 that functions as a first member guide mechanism, and a primary coil body as a first member that is a mover of an induction linear motor. 26, a secondary conductor 28 as a second member that is a stator of the induction type linear motor, and a holding mechanism 24 that holds the primary coil body 26 and the secondary conductor 28 within a certain distance. The vibration detection unit 30 detects a vibration in the direction of the plane along the horizontal plane with respect to the lower structure 14 of the vibrating body 16, and the control unit 32 controls the induction linear motor. The vibration damping device 10 is a hybrid vibration damping device having an active vibration damping mechanism that actively vibrates with an induction linear motor, and a passive vibration damping mechanism that performs vibration damping with a restoring force by a restoring force mechanism 20. is there.

  The vibrating body 16 is connected to a primary coil body 26 that is a mover of an induction type linear motor and moves integrally. The vibrating body 16 vibrates with the primary coil body 26, thereby contributing to damping. Since the vibrating body 16 contributes to damping according to its mass, it is also called a mass damper. The vibrating body 16 is suspended from the upper structure 12 by a plurality of ropes 20a and a plurality of ropes 20b via a frame member 18 disposed so as to cover the entire upper side in the vertical direction and the horizontal direction of the vibrating body 16. ing. The plurality of ropes 20a and the plurality of ropes 20b function as support members. More specifically, the vibrating body 16 is suspended from the frame member 18 by a plurality of ropes 20b, and the frame member 18 is suspended from the upper structure 12 by a plurality of ropes 20a. In FIG. 1, two ropes 20 a and two ropes 20 b are both drawn, but the present invention is not limited to this, and may be one or three or more. The frame member 18, the rope 20 a, and the rope 20 b support the vibrating body 16 so that the vibrating body 16 can swing relative to the upper structure 12, that is, can vibrate, and when the vibrating body 16 vibrates, the restoring force of the pendulum is applied to the vibrating body 16. It functions as a restoring force mechanism 20 that imparts. That is, the restoring force mechanism 20 includes a plurality of ropes 20a and a plurality of ropes 20b. Since the vibration damping device 10 has the restoring force mechanism 20, the restoring force compensates for vibration damping by the induction linear motor, so that power consumption of the induction linear motor can be suppressed.

  The vibrating body 16 is provided with a cylindrical hole 16a on the lower surface in the vertical direction. The vibrating body 16 is arranged with a vertical slide mechanism 22 inserted into a cylindrical hole 16a. The vertical direction sliding mechanism 22 is provided with a primary coil body 26 at the end opposite to the side where the vibrating body 16 is provided. That is, the vertical direction slide mechanism 22 is provided between the lower side of the vibrating body 16 and the primary coil body 26 that is the first member, and the vibrating body 16 and the primary coil body 26 are connected and integrated. It has become. Since the vertical slide mechanism 22 guides the movement of the primary coil body 26 with respect to the vibrating body 16, the primary coil body 26 can be prevented from falling off from the vibrating body 16.

  As shown in FIGS. 1, 2, and 3, the holding mechanism 24 includes an X-axis movable guide rail 24x and a Y-axis movable guide provided on the lower side in the vertical direction with respect to the X-axis movable guide rail 24x. Rail 24y. In this embodiment, the holding mechanism 24 is provided with the X-axis movable guide rail 24x on the upper side in the vertical direction than the Y-axis movable guide rail 24y. The guide rail 24x may be provided on the lower side in the vertical direction than the Y-axis movable guide rail 24y. Two X-axis movable guide rails 24x are provided in parallel in the direction of the plane extending along the horizontal plane, preferably in the X-axis direction which is the first direction in the horizontal direction. The X-axis movable guide rail 24x is larger than the width of the vertical slide mechanism 22 in the direction of the plane extending along the horizontal plane, preferably the second direction in the horizontal direction and perpendicular to the X-axis direction. Widely spaced from the width of the primary coil body 26 is provided. Hereinafter, a plane extending along the horizontal plane is referred to as an XY plane. Two Y-axis movable guide rails 24y are provided in parallel to the Y-axis direction below the X-axis movable guide rail 24x. The Y-axis movable guide rail 24y is provided on the secondary conductor 28 with an interval equivalent to the width of the secondary conductor 28 in the X-axis direction.

  The X-axis movable guide rail 24x has a first groove 24xa on the lower side in the vertical direction excluding both ends. The first groove portion 24xa is fitted to a convex portion 26a provided on the upper side in the vertical direction of the primary coil body 26 so as to be slidable in the X-axis direction and not separated in the vertical direction. Thus, the X-axis movable guide rail 24x holds the primary coil body 26 from the upper side in the vertical direction so as to be movable relative to the X-axis movable guide rail 24x in the X-axis direction. Acts as a mechanism.

  The X-axis movable guide rail 24x has second groove portions 24xy on the lower side in the vertical direction at both ends. The second groove portion 24xy is fitted to the convex portion on the upper side in the vertical direction of the Y-axis movable guide rail 24y so as to be slidable in the Y-axis direction. Accordingly, the Y-axis movable guide rail 24y functions as a second direction holding mechanism that holds the X-axis movable guide rail 24x so as to be relatively movable in the Y-axis direction with respect to the Y-axis movable guide rail 24y. To do.

  The holding mechanism 24 includes a primary coil body 26 held on the X-axis movable guide rail 24x from the upper side in the vertical direction, and a secondary conductor 28 provided on the lower side in the vertical direction of the Y-axis movable guide rail 24y. Are held at a distance d in the Z-axis direction, which is a direction perpendicular to the XY plane. The interval d is an appropriate interval for the primary coil body 26 and the secondary conductor 28 to function as an induction type linear motor. In the holding mechanism 24, the X-axis movable guide rail 24x and the Y-axis movable guide rail 24y have high rigidity and a small amount of deflection. Therefore, the distance between the primary coil body 26 and the secondary conductor 28 is maintained within an allowable range of an appropriate interval in order to function as an induction type linear motor. Thereby, the induction type linear motor can be driven stably.

  The primary coil body 26 is opposed to the secondary conductor 28 by the holding mechanism 24 and is spaced apart from the lower structure 14 by a distance d in the Z-axis direction above the secondary conductor 28 in the Z-axis direction. It is held so as to be movable in the axial direction and the Y-axis direction. The secondary conductor 28 is fixed on the surface of the lower structure 14 that extends in the horizontal direction. That is, the secondary conductor 28 is fixedly provided on the lower structure 14 which is an XY plane, preferably a horizontal plane. The primary coil body 26 as the first member functions as a mover in the induction linear motor, and the secondary conductor 28 as the second member functions as a stator in the induction linear motor. By driving the induction type linear motor, the primary coil body 26 can vibrate at a high speed and a long stroke with respect to the secondary conductor 28. The primary coil body 26 that is the first member is connected to the vibrating body 16 through the vertical slide mechanism 22 and moves integrally in the plane direction. Therefore, by driving the induction linear motor, the vibrating body 16 can vibrate at a high speed and a long stroke with respect to the lower structure 14.

  The primary coil body 26 vibrates with the vibrating body 16 relative to the lower structure 14 in accordance with the driving of the induction linear motor. Therefore, the mass of the primary coil body 26 is included in the movable mass of the vibration damping device 10 together with the mass of the vibrating body 16. Therefore, the primary coil body 26 can contribute to damping according to the mass. Further, the primary coil body 26 can contribute to reducing the mass of the vibrating body 16 with respect to the movable mass necessary for the design of the vibration damping device 10 by the mass.

  As shown in FIG. 4, the primary coil body 26 includes a first coil 26x and a second coil 26y. The primary coil body 26 is electrically connected to the control unit 32 via a conducting wire 34. The conducting wire 34 includes a conducting wire 34 x that connects the first coil 26 x and the control unit 32, and a conducting wire 34 y that connects the second coil 26 y and the control unit 32. In this embodiment, each of the first coil 26x and the second coil 26y is a three-phase coil, and three conducting wires 34x and 34y are connected to apply a three-phase AC voltage to generate a driving force. To do. That is, each of the first coil 26x and the second coil 26y has at least three coils (the same coil is wound in the direction in which the conducting wire is wound), and a current of a different phase is applied thereto. In addition, the 1st coil 26x and the 2nd coil 26y are not limited to this, What is necessary is just to be able to generate a driving force in a predetermined direction.

  The first coil 26x is oriented in the Y-axis direction parallel to the XY plane. The first coil 26x generates a magnetic force according to the current from the conductive wire 34x, and an eddy current is generated in the secondary conductor 28 according to the magnetic force. And a driving force is generated in the X-axis direction with respect to the secondary conductor 28. The second coil 26y is oriented in the X-axis direction parallel to the XY plane, and generates a magnetic force according to the current from the conducting wire 34y, and an eddy current is generated inside the secondary conductor 28 according to the magnetic force. And a driving force is generated in the Y-axis direction with respect to the secondary conductor 28. The first coil 26x and the second coil 26y are arranged at a sufficient interval so that eddy currents generated inside the secondary conductor 28 interfere with each other and drive is not affected. In the present embodiment, the first coil 26x and the second coil 26y are orthogonal to each other in the axial direction. However, the present invention is not limited to this, and it is only necessary that the axial directions are different from each other. Thereby, the primary coil body 26 can generate a driving force in any direction in the XY plane with respect to the secondary conductor 28. That is, since the primary coil body 26 can move in any direction in the XY plane with respect to the secondary conductor 28, the vibrating body 16 can move in any direction in the XY plane with respect to the lower structure 14. Can be vibrated.

  In the present embodiment, the primary coil body 26 is provided with two coils whose axial directions are different from each other. However, the present invention is not limited to this, and three or more coils may be provided. When the primary coil 26 is provided with three or more coils, any two coils may have different axial directions. The primary coil body 26 may be designed according to a necessary driving force for each direction in the direction of the XY plane, and one or a plurality of coils may be installed for each direction.

  The secondary conductor 28 is a flat plate of a non-magnetized conductor exemplified by aluminum and copper. The secondary conductor 28 generates an eddy current when a current flows through the primary coil body 26. The secondary conductor 28 drives the primary coil body 26 in a direction parallel to the XY plane according to the generated eddy current. The secondary conductor 28 generates a force in a direction perpendicular to each axial direction of the primary coil body 26 and in a plane direction. One secondary conductor 28 is sufficient regardless of the number of coils included in the primary coil body 26 as in the present embodiment, but two or more may be provided. When two or more secondary conductors 28 are provided, they may be overlapped or arranged in the direction of the XY plane. Since the secondary conductor 28 does not require an external current, it does not limit the configuration of the control device 10, so that a wide range of designs according to the specifications of the control device 10 such as power supply and building structure can be made possible.

  In the present embodiment, the vibration detection unit 30 is provided in the lower structure 14 that faces the vibration body 16, but is not limited to this, and the vibration body 16 that faces the lower structure 14. May be provided. The vibration detection unit 30 is electrically connected to the control unit 32, detects vibration in the direction of the XY plane with respect to the lower structure 14 of the vibration body 16, and controls information on the detected vibration in the direction of the XY plane. To the unit 32.

  The control unit 32 is connected to the first coil 26x via the conducting wire 34x, and a current can flow through the first coil 26x via the conducting wire 34x. The control unit 32 is connected to the second coil 26y via the conducting wire 34y, and can pass a current to the second coil 26y via the conducting wire 34y. The control unit 32 is electrically connected to the vibration detection unit 30. The control unit 32 receives, from the vibration detection unit 30, vibration information in the XY plane direction detected by the vibration detection unit 30. Based on the received vibration information in the direction of the XY plane, the control unit 32 causes a predetermined current to flow through the conductors 34x and 34y, and moves the primary coil body 26 to the secondary conductor 28 in a direction to cancel the vibrations. Vibrate.

  The vibration damping device 10 according to the first embodiment has the above-described configuration. When receiving the seismic force, the vibration damping device 10 first detects the vibration in the direction of the XY plane of the lower structure 14 caused by the seismic force acting. Next, based on the vibration in the direction of the detected XY plane, the vibration damping device 10 causes a predetermined current to flow through the conductive wire 34x and the conductive wire 34y, and cancels the vibration in the primary coil body. 26 is vibrated with respect to the secondary conductor 28. In this way, the vibration damping device 10 reduces the vibration that the building receives due to the seismic force. In the vibration damping device 10 according to the first embodiment, the vibrating body 16 and the primary coil body 26 are driven by an induction type linear motor including the primary coil body 26 and the secondary conductor 28. The primary coil body 26 can be vibrated in an arbitrary direction in a horizontal plane at a high speed and a long stroke with respect to the secondary conductor 28. Therefore, the vibration damping device 10 according to the first embodiment can cope with a long-period earthquake that has recently been required.

  FIG. 5 is a diagram showing a configuration of a vibration damping device 40 according to the second embodiment of the present invention. The vibration damping device 40 according to the second embodiment is obtained by changing the holding mechanism 24 to a ball bearing 42 as a holding mechanism in the vibration damping device 10 according to the first embodiment. Accordingly, in the vibration damping device 40 according to the second embodiment, in the vibration damping device 10 according to the first embodiment, the primary coil body 26 has no protrusion 26a on the upper side in the vertical direction. Has been changed. The vibration damping device 40 according to the second embodiment uses the same code group as that of the first embodiment in the same configuration as that of the first embodiment, and a detailed description thereof is omitted.

  In the present embodiment, the ball bearings 42 are provided at four locations on the lower side in the vertical direction of the primary coil body 26, but the present invention is not limited to this and may be provided at three or more locations. . The ball bearing 42 rotates on the upper surface of the secondary conductor 28. The primary coil body 26 is connected to and integrated with the vibrating body 16, and the distance d corresponding to the length of the ball bearing 42 in the Z-axis direction is obtained by the ball bearing 42 rotating on the upper surface of the secondary conductor 28. And the upper surface of the secondary conductor 28 is moved in an arbitrary direction in the XY plane. In other words, the ball bearing 42 holds the primary coil body 26 in any horizontal plane with respect to the secondary conductor 28 while maintaining the space between the primary coil body 26 and the secondary conductor 28 within an allowable range of an appropriate distance. Therefore, the induction type linear motor can be driven stably.

  The vibration damping device 40 according to the second embodiment is different from the vibration damping device 10 according to the first embodiment in that the holding mechanism 24 is changed to a ball bearing 42 as a holding mechanism. It is not necessary to consider the amount of deflection of the included X-axis movable guide rail 24x and Y-axis movable guide rail 24y. Further, the vibration damping device 40 according to the second embodiment is free from the X-axis movable guide rail 24x and the Y-axis movable guide rail 24y, so that it is compared with the vibration damping device 10 according to the first embodiment. Thus, the sliding surface when the induction type linear motor is driven is reduced, and the structure is simplified. Therefore, since the vibration damping device 40 according to the second embodiment is easier to design than the vibration damping device 10 according to the first embodiment, the specifications of the control device 40 such as power supply and building structure are provided. A wider range of designs is possible.

  FIG. 6 is a diagram illustrating a configuration of a vibration damping device 50 according to the third embodiment of the present invention. FIG. 7 is a diagram showing a configuration of the restoring force mechanism 54 used in the vibration damping device 50 according to the third embodiment of the present invention. The vibration damping device 50 according to the third embodiment is the same as the vibration damping device 10 according to the first embodiment, except that the vibrating body 16, the frame member 18, and the restoring force mechanism 20 are the vibrating body 52 and the restoring force mechanism 54. And the vertical slide mechanism 22 is removed. The vibration damping device 50 according to the third embodiment uses the same code group as that of the first embodiment in the same configuration as that of the first embodiment, and a detailed description thereof is omitted.

  As shown in FIG. 6, the vibrating body 52 does not have the cylindrical hole 16 a in the vibrating body 16 and does not have a portion that is suspended from the rope 20 b, and thus has a simpler shape than the vibrating body 16. The vibrating body 52 is provided with the primary coil body 26 directly connected to the lower side in the vertical direction, and moves together with the primary coil body 26. In the holding mechanism 24 including the X-axis movable guide rail 24x and the Y-axis movable guide rail 24y, since the vibrating body 52 is not suspended from the rope 20b, all of the movable masses of the vibrating body 52 and the primary coil body 26 are obtained. Support. Therefore, the holding mechanism 24 used in the vibration damping device 50 according to the third embodiment has higher rigidity than the holding mechanism 24 used in the vibration damping device 10 according to the first embodiment. The structure has a smaller amount of deflection.

  As shown in FIG. 7, the restoring force mechanism 54 includes an X-axis direction restoring force mechanism 54 x that applies a restoring force in the X-axis direction that is the first direction to the vibrating body 52 and the primary coil body 26, and the vibrating body. 52 and a Y-axis direction restoring force mechanism 54y that applies a restoring force in the Y-axis direction, which is the second direction, to the primary coil body 26. The X-axis direction restoring force mechanism 54x includes two X-axis direction coil springs 56x provided on opposite sides of the vibrating body 52 in the X-axis direction and opposite to each other in the X-axis direction, and two X-axis direction coil springs 56x. And two X-axis direction coil spring fixing portions 58x that fix each end opposite to the vibrating body 52. The two X-axis direction coil spring fixing portions 58x are fixedly provided at both ends of the upper surface in the vertical direction of the X-axis movable guide rail 24x. The two X-axis direction coil springs 56x directly support the vibrating body 52.

  The Y-axis direction restoring force mechanism 54y includes a total of four Y-axis direction coil springs 56y provided on both ends in the X-axis direction of the respective X-axis movable guide rails 24x so as to be opposite to each other in the Y-axis direction, There are four Y-axis direction coil spring fixing portions 58y that fix each end of the Y-axis direction coil spring 56y opposite to the X-axis movable guide rail 24x. The four Y-axis direction coil spring fixing portions 58y are fixedly provided at both ends of the upper surface in the vertical direction of each Y-axis movable guide rail 24y. The four Y-axis direction coil springs 56y support the vibrating body 52 via the two X-axis movable guide rails 24x.

  The restoring force mechanism 54 can apply the elastic force of each of the coil springs 56x and 56y as a restoring force to the vibrating body 52 supported by the two X-axis direction coil springs 56x and the four Y-axis direction coil springs 56y. Since the vibration damping device 50 according to the third embodiment has the restoring force mechanism 54, the restoring force is inductive linear as in the vibration damping device 10 according to the first embodiment having the restoring force mechanism 20. Since the vibration suppression by the motor is supplemented, the power consumption of the induction linear motor can be suppressed. The vibration damping device 50 according to the third embodiment is the same as the vibration damping device 10 according to the first embodiment, except that the vibrating body 16, the frame member 18, and the restoring force mechanism 20 are the vibrating body 52 and the restoring force mechanism 54. Since the vertical slide mechanism 22 is removed, the height of the entire apparatus in the Z-axis direction is reduced. Therefore, the vibration damping device 50 according to the third embodiment can reduce the installation space in the height direction required by the device, compared with the vibration damping device 10 according to the first embodiment.

  FIG. 8 is a diagram illustrating a configuration of a vibration damping device 60 according to the fourth embodiment of the present invention. In the vibration damping device 60 according to the fourth embodiment, in the vibration damping device 40 according to the second embodiment, the vibrating body 16 is changed to the vibrating body 62, and the frame member 18, the restoring force mechanism 20, and the vertical direction. The slide mechanism 22 is removed. The vibration damping device 60 according to the fourth embodiment uses the same code group as that of the second embodiment in the same configuration as that of the second embodiment, and a detailed description thereof is omitted.

  Since the vibration damping device 60 according to the fourth embodiment does not have a restoring force mechanism, it does not have a passive vibration damping mechanism. Therefore, the vibration damping device 60 according to the fourth embodiment is an active vibration damping device having an active vibration damping mechanism that actively vibrates with an induction linear motor. The vibration damping device 60 according to the fourth embodiment does not have a restoring force mechanism, but when receiving a seismic force, like the vibration damping device 40 according to the second embodiment, first, a vibration detection unit 30 detects as vibration in the direction of the XY plane of the lower structure 14 caused by the action of seismic force. Next, the damping device 40 causes the first coil body to flow in a direction in which the control unit 32 causes a predetermined current to flow through the conducting wire 34x and the conducting wire 34y based on the detected vibration in the direction of the XY plane, and cancels this vibration. 26 is vibrated with respect to the secondary conductor 28. In this way, the vibration damping device 40 reduces the vibration that the building receives due to the seismic force. The vibration damping device 60 according to the fourth embodiment is an induction type linear motor including the primary coil body 26 and the secondary conductor 28 as with the vibration damping device 40 according to the second embodiment. Since the primary coil body 26 is driven, the vibrating body 62 and the primary coil body 26 can be vibrated in any direction in the XY plane with a high speed and a long stroke with respect to the secondary conductor 28. For this reason, the vibration damping device 60 according to the fourth embodiment is capable of handling long-period earthquakes that have recently been demanded, similarly to the vibration damping device 40 according to the second embodiment.

  In the vibration damping device 60 according to the fourth embodiment, in the vibration damping device 40 according to the second embodiment, the vibrating body 16 is changed to the vibrating body 62, and the frame member 18, the restoring force mechanism 20, and the vertical direction. Since the slide mechanism 22 is removed, the height of the entire apparatus in the Z-axis direction is reduced. Therefore, the vibration damping device 60 according to the fourth embodiment can reduce the installation space in the height direction required by the device, compared with the vibration damping device 40 according to the second embodiment. Since the vibration damping device 60 according to the fourth embodiment is easier to design than the vibration damping device 40 according to the second embodiment, according to the specifications of the control device 60 such as power supply and building structure. A wider range of designs is possible.

  FIG. 9 is a diagram illustrating a configuration of a vibration damping device 70 according to the fifth embodiment of the present invention. The vibration damping device 70 according to the fifth embodiment is obtained by removing the restoring force mechanism 54 from the vibration damping device 50 according to the third embodiment. The vibration damping device 70 according to the fifth embodiment uses the same code group as that of the third embodiment in the same configuration as that of the third embodiment, and a detailed description thereof is omitted.

  Since the vibration damping device 70 according to the fifth embodiment does not have a restoring force mechanism, it does not have a passive vibration damping mechanism. Therefore, the vibration damping device 70 according to the fifth embodiment is an active vibration damping device having an active vibration damping mechanism that actively vibrates with an induction linear motor. The vibration damping device 70 according to the fifth embodiment does not have the restoring force mechanism, but has the same effect as the vibration damping device 60 according to the fourth embodiment that similarly does not have the restoring force mechanism.

  The vibration damping device 70 according to the fifth embodiment is the vibration damping device 50 according to the third embodiment because the restoring force mechanism 54 is removed from the vibration damping device 50 according to the third embodiment. Therefore, a wider range of designs according to the specifications of the control device 70 such as power supply and building structure is possible.

  FIG. 10 is a diagram illustrating a configuration of a vibration damping device 80 according to the sixth embodiment of the present invention. In the vibration damping device 80 according to the sixth embodiment, in the vibration damping device 10 according to the first embodiment, the vibrating body 16 and the secondary conductor 28 are changed to the vibrating body 82 and the secondary conductor 84, and the vertical The direction slide mechanism 22 and the holding mechanism 24 are removed. The vibration damping device 80 according to the sixth embodiment uses the same code group as that of the first embodiment in the same configuration as that of the first embodiment, and a detailed description thereof is omitted.

  As shown in FIG. 10, the vibrating body 82 does not have the cylindrical hole 16a in the vibrating body 16, and the primary coil body 26 is directly provided on the lower surface in the vertical direction. The vibrating body 82 is suspended from the ropes 20a and 20b that are support members. Therefore, the vibrating body 82 is connected to the primary coil body 26 and swings integrally. The restoring force mechanism 20 supports all of the movable masses of the vibrating body 82 and the primary coil body 26. The secondary conductor 84 has a convex curved surface 84a provided on the upper surface.

  The primary coil body 26 is in the ground state, and the bottom surface on the lower side in the vertical direction is parallel to the XY plane, and the distance d in the Z-axis direction from the region parallel to the central XY plane, which is the bottom of the downwardly convex curved surface 84a. Are arranged at positions facing each other. As the primary coil body 26 swings, the bottom surface has an inclination with respect to the XY plane, and the distance from the lower structure 14 on the bottom surface changes. The downwardly convex curved surface 84 a corresponds to the inclination corresponding to the swing of the primary coil body 26 in the XY in-plane distribution of the inclination. The downwardly convex curved surface 84 a corresponds to the distance from the lower structure 14 on the bottom surface according to the swing of the primary coil body 26 in the XY in-plane distribution of the height with respect to the lower structure 14. Therefore, the primary coil body 26 and the secondary conductor 84 may vibrate with each other while maintaining the distance d and with the bottom surface of the primary coil body 26 and the downwardly convex curved surface 84a facing each other. it can. That is, the restoring force mechanism 20 and the downwardly convex curved surface 84a function as a holding mechanism.

  The vibration damping device 80 according to the sixth embodiment is the same as the vibration damping device 10 according to the first embodiment except that the vertical slide mechanism 22 is removed, and the restoring force mechanism 20 and the downwardly convex curved surface 84a are connected to each other. Since it functions as a non-contact holding mechanism, there is no sliding between the primary coil body 26 and the secondary conductor 84, and the movement of the primary coil body 26 relative to the secondary conductor 84 becomes smooth.

  FIG. 11 is a diagram showing a configuration of a vibration damping device 90 according to the seventh embodiment of the present invention. The vibration damping device 90 according to the seventh embodiment is obtained by changing the secondary conductor 28 to the secondary conductor 92 in the vibration damping device 60 according to the fourth embodiment. The vibration damping device 90 according to the seventh embodiment uses the same code group as that of the fourth embodiment in the same configuration as that of the fourth embodiment, and a detailed description thereof is omitted.

  The secondary conductor 92 has a convex curved surface 92a provided on the upper surface. The vibrating body 62 and the primary coil body 26 move on the downwardly convex curved surface 92a as the ball bearing 42 rotates. The vibrating body 62 and the primary coil body 26 are in the ground state, the bottom surface in the vertical direction is parallel to the XY plane, and the region parallel to the central XY plane that is the bottom of the downwardly convex curved surface 92a and the Z axis They are arranged at positions facing each other with a gap d in the direction. When the vibrating body 62 and the primary coil body 26 deviate from the ground state on the downwardly convex curved surface 92a, the ball bearing 42 rotates toward the ground state on the downwardly convex curved surface 92a. Receives resilience to return. That is, the downwardly convex curved surface 92a functions as a restoring force mechanism. The curvature of the downwardly convex curved surface 92a determines the natural period of vibration of the vibrating body 62 and the primary coil body 26 that move on the curved surface 92a. Therefore, the curvature of the downwardly convex curved surface 92a is designed so that the natural period of vibration of the vibrating body 62 and the primary coil body 26 is close to the natural period of vibration of the building.

  In the vibration damping device 90 according to the seventh embodiment, the curvature of the downwardly convex curved surface 92a functions as a restoring force mechanism, and the vibration of the vibration body 62 and the primary coil body 26 close to the natural period of the vibration of the building. Since the natural period is given, a higher vibration damping function can be obtained while maintaining ease of design as compared with the vibration damping device 60 according to the fourth embodiment.

  FIG. 12 is a diagram showing the configuration of the vibration damping device 100 according to the eighth embodiment of the present invention. In the vibration damping device 100 according to the eighth embodiment, the first member is changed from the primary coil body 26 to the secondary conductor 126 in the vibration damping device 10 according to the first embodiment, and the second member is The secondary conductor 28 is changed to the primary coil body 128. That is, the primary coil body and the secondary conductor are interchanged. Accordingly, the vibration damping device 100 according to the eighth embodiment electrically connects the primary coil body 26 that is the first member and the control unit 32 in the vibration damping device 10 according to the first embodiment. The conductive wire 34 that is connected in general is changed to a conductive wire 134 that electrically connects the primary coil body 128 that is the second member and the control unit 32. The vibration damping device 100 according to the eighth embodiment uses the same code group as that of the first embodiment in the same configuration as that of the first embodiment, and a detailed description thereof is omitted.

  The secondary conductor 126 that is the first member functions as a mover in the induction type linear motor, and the primary coil body 128 that is the second member functions as a stator in the induction type linear motor. The secondary conductor 126 has the same configuration as the secondary conductor 28. The primary coil body 128 has the same configuration as that of the primary coil body 26, but spreads more horizontally than the primary coil body 26, so that more coils are spread than the primary coil body 26. . The conductive wire 134 has more wires than the conductive wire 34 because the number of coils spread on the primary coil body 128 is larger than the number of coils included in the primary coil body 26.

  The vibration damping device 100 according to the eighth embodiment has the above-described configuration. Therefore, when receiving the seismic force, the vibration damping device 100 first detects the vibration in the direction of the XY plane of the lower structure 14 caused by the seismic force acting. Next, based on the vibration in the direction of the XY plane detected by the control unit 32, the vibration damping device 100 causes a predetermined current to flow through the conducting wire 134, and the secondary conductor 126 is moved in the direction to cancel the vibration. The coil body 128 is vibrated. In this way, the vibration damping device 100 reduces the vibration that the building receives due to the seismic force. In the vibration damping device 100 according to the eighth embodiment, since the vibrating body 16 and the secondary conductor 126 are driven by an induction linear motor including the secondary conductor 126 and the primary coil body 128, the vibrating bodies 16 and 2 The secondary conductor 126 can be vibrated in an arbitrary direction within a horizontal plane at a high speed and a long stroke with respect to the primary coil body 128. Therefore, the vibration damping device 100 according to the eighth embodiment is capable of handling long-period earthquakes that have recently been requested.

  In the vibration damping devices according to the ninth to fourteenth embodiments, in the vibration damping devices 40, 50, 60, 70, 80, and 90 according to the second to seventh embodiments, the first member is a primary member. The coil body 26 is changed to the secondary conductor 126, and the second member is changed from the secondary conductor 28 to the primary coil body 128. That is, in both cases, the primary coil body and the secondary conductor are interchanged. Accordingly, the vibration damping devices according to the ninth to fourteenth embodiments are respectively associated with the vibration damping devices 40, 50, 60, 70, 80, 90 according to the second to seventh embodiments. The conducting wire 34 that electrically connects the primary coil body 26 that is one member and the control unit 32 is changed to a conducting wire 134 that electrically connects the primary coil body 128 that is the second member and the control unit 32. ing. The vibration damping devices according to the ninth to fourteenth embodiments use the same code groups as those of the second to seventh embodiments in the same configurations as those of the second to seventh embodiments, respectively. The detailed explanation is omitted.

  Since the vibration damping devices according to the ninth to fourteenth embodiments have the above-described configuration, they are driven in the same manner as the vibration damping device 100 according to the eighth embodiment, while the second to second vibration damping devices are respectively driven. The same effects as those of the vibration damping devices 40, 50, 60, 70, 80, 90 according to the seventh embodiment are obtained.

10, 40, 50, 60, 70, 80, 90 Vibration control device 12 Upper structure 14 Lower structure 16, 52, 62, 82 Vibrating body 20, 54 Restoring force mechanism 22 Vertical slide mechanism 24 Holding mechanism 24x X Guide rail for moving shaft 24y Guide rail for moving Y axis 26, 128 Primary coil body 26x First coil 26y Second coil 28, 84, 92, 126 Secondary conductor 30 Vibration detection unit 32 Control unit 34, 134 Lead wire 42 Ball Bearing 84a, 92a Convex curved surface

Claims (12)

A vibrating body supported in a state capable of vibrating in a structure;
A first member that is connected to the lower surface of the vibrating body in the vertical direction and that moves in connection with the vibrating body;
A second member that is fixed to a plane extending in the horizontal direction on the surface of the structure and spaced apart below the first member;
A holding mechanism for holding a gap between the first member and the second member within a certain range;
A vibration detector that detects vibrations of the vibrating body in the plane direction with respect to the structure;
A control unit that vibrates the first member relative to the second member in a direction that cancels the vibration in the direction of the plane detected by the vibration detection unit;
Have
Either one of the first member and the second member is a primary coil body provided such that an axial direction is parallel to the plane,
The other of the first member and the second member is in a direction perpendicular to the axial direction with respect to the primary coil body and in the plane according to the magnetic force generated by the primary coil body. A vibration damping device that is a secondary conductor that generates a force in a direction. The primary coil body includes a first coil, a second coil having a different axial direction from the first coil,
The vibration damping device according to claim 1, comprising: A first member guide mechanism which is provided between the lower part of the vibrating body and the first member and guides the movement of the first member relative to the vibrating body;
The vibration damping device according to claim 1, further comprising: The holding mechanism is
A first direction holding mechanism that holds the primary coil body and the secondary conductor so as to be relatively movable in a first direction parallel to the plane;
A second direction holding mechanism that holds the primary coil body and the secondary conductor so as to be relatively movable in a second direction parallel to the plane and perpendicular to the first direction;
The vibration damping device according to any one of claims 1 to 3, further comprising: A restoring force mechanism that applies a restoring force to the vibrating body when the vibrating body vibrates;
The vibration damping device according to claim 4, further comprising: The restoring force mechanism is
A support member that is provided between the structure and the vibrating body and supports the vibrating body so as to be swingable with respect to the structure;
The vibration damping device according to claim 5, further comprising: The restoring force mechanism is
Provided between the vibrating body and the first direction holding mechanism and between the first direction holding mechanism and the second direction holding mechanism, and vibrates the vibrating body in the direction of the plane with respect to the structure. A coil spring that supports it,
The vibration damping device according to claim 5, further comprising: The holding mechanism is
A ball bearing that holds the primary coil body and the secondary conductor so as to be relatively movable in a direction parallel to the plane;
The vibration damping device according to any one of claims 1 to 3, further comprising: A restoring force mechanism that applies a restoring force to the vibrating body when the vibrating body vibrates;
The vibration damping device according to claim 8, further comprising: The restoring force mechanism is
A support member that is provided between the structure and the vibrating body and supports the vibrating body so as to be swingable with respect to the structure;
The vibration damping device according to claim 9, further comprising: The restoring force mechanism is
A downwardly convex curved surface provided on the upper surface of the second member fixed to the structure;
The vibration damping device according to claim 9, further comprising: The holding mechanism is
A support member that is provided between the structure and the vibrating body and supports the vibrating body so as to be swingable with respect to the structure;
A downwardly convex curved surface provided on the upper surface of the second member fixed to the structure;
The vibration damping device according to any one of claims 1 to 3, further comprising:

Images