JP2011069104A - Seismic control device and seismic control structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce restriction on the installation of a seismic control device as compared with a constitution having an additional mass body rotating through inter-layer displacements. <P>SOLUTION: A rotary inertia mass obtained by rotating the additional mass body 170 is equivalent to the mass obtained, when an additional mass body larger than the actual mass of the additional mass body 170 is added, obtaining a vibration-reducing effect larger than the constitution without the rotation of the additional mass body 170. Furthermore, the restriction on the installation of the seismic control device is reduced as compared with the constitution having the additional mass body rotating through the inter-layer displacements. Furthermore still, large seismic effects to vertical vibration are obtained as compared with a standard TMD (Tuned Mass Damper) having the additional mass body not allowed to rotate. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a vibration control device and a vibration control structure.

  As a mechanism for reducing the vibration of the structure, a so-called tuned mass damper (TMD) disclosed in Patent Document 1 is known. A tuned mass damper (TMD) connects an additional mass body to a structure via an additional spring, and synchronizes the natural frequency determined by the additional spring and the additional mass body with the natural frequency of the structure. The response near the resonance point is reduced (see Patent Document 1).

  Also, in Patent Document 2, a rotary inertia mass damper that generates a rotary inertia mass by rotating a weight due to interlayer deformation is installed in an arbitrary layer of a multilayer structure, and an additional spring is installed in series with the rotary inertia mass damper. Then, a vibration reduction mechanism that reduces the response of the structure at this natural frequency by synchronizing the natural frequency determined by the rotary inertia mass and the additional spring with the natural frequency of the structure has been proposed (patent) Reference 2).

JP-A 63-156171 JP 2008-133947 A

  However, the additional mass body in a general tuned mass damper (TMD) has a smaller mass than the structure to be controlled, and the mass ratio μ of the additional mass body to the structure is very small (the mass of the additional mass body). Is often less than 1% of the structure). For this reason, tuned mass dampers are generally effective for controlling fine vibrations caused by wind power, etc., but are not sufficiently effective for controlling large vibrations such as earthquakes. .

  Further, the vibration reduction mechanism (damping device) of Patent Document 2 rotates the weight (additional mass body) due to interlayer deformation, for example, the horizontal relative displacement of the upper and lower structural floors (slabs) constituting the layer. It is necessary to connect a rotary inertia mass damper and an additional spring arranged in series to the upper and lower structural floors constituting the layer. Therefore, installation restrictions such as installation location and installation method are large.

  In view of the above, an object of the present invention is to provide a vibration control device and a vibration control structure including the vibration control device with less restrictions on installation compared to a configuration in which an additional mass body rotates due to interlayer displacement. .

  The invention according to claim 1 is connected to the moving body and the structural floor, and is provided on the structural floor, and is provided with an elastic member that is elastically deformed in the vertical direction. A rotating mechanism unit for conversion, and the natural vibration of the vertical vibration of the moving body is set to synchronize with the natural vibration of the vertical vibration of the structural floor.

  In the first aspect of the present invention, the natural frequency of the vertical vibration of the moving body is set so as to be synchronized with the natural frequency of the vertical vibration of the structural floor, so that the vertical direction of the structural floor caused by the disturbance Vibration is reduced.

  At this time, the vertical displacement of the moving body is converted into the rotational motion of the additional mass body, that is, the rotational inertial mass obtained by the rotation of the additional mass body is larger than the actual mass of the additional mass body. This is equivalent to the addition of the additional mass body, and a large vibration reduction effect can be obtained as compared with the configuration in which the additional mass body is not rotated. In other words, a greater seismic control effect can be obtained compared to a configuration in which the additional mass is not rotated.

  Further, in the present vibration damping device, the additional mass body is rotated by the vertical vibration of the moving body supported by the elastic member, and a rotational inertial mass is generated. Therefore, there are few installation restrictions compared with the structure which an additional mass body rotates by interlayer displacement.

  The invention of claim 2 has a damping member for damping the vibration of the moving body.

  In the invention of claim 2, the vibration of the moving body is converged early by the damping member.

  According to a third aspect of the present invention, the movable body has a shaft body arranged with the vertical direction as an axial direction, and the rotating mechanism is provided on the rotating body into which the shaft body is inserted and the structural floor. And a holding body for rotatably holding the rotating body, and an outer peripheral surface of the shaft body and an inner peripheral surface of the rotating body, and the linear motion in the axial direction of the shaft body around the axis of the rotating body. A screwing means for converting to a rotational motion; and the additional mass body integrally rotating with the rotating body and rotating about an axis.

  In the invention of claim 3, the shaft body is displaced in the vertical direction by the displacement of the movable body in the vertical direction. Then, the vertical displacement of the shaft body is converted into the rotational motion of the rotating body and the additional mass body by screwing means provided on the outer peripheral surface of the shaft body and the inner peripheral surface of the rotating body.

  The rotational inertia mass actually obtained is the sum of the additional mass body and the rotating body, but here, for convenience, the rotating mass of the rotating body is ignored.

  The rotating body and the additional mass body may be integrated. Alternatively, the rotating body and the holding body (or a part of the holding body) may be integrated.

  According to a fourth aspect of the present invention, the moving body includes a plurality of the shaft bodies arranged in parallel, and a plurality of the rotation mechanism sections are provided for each of the shaft bodies.

  In the invention of claim 4, when one moving body is displaced in the vertical direction, the plurality of additional mass bodies corresponding to the plurality of shaft bodies arranged in parallel rotate, so that a larger rotational inertial mass can be obtained. Moreover, since the shaft bodies are arranged in parallel, the total length in the axial direction of the vibration control device does not increase. That is, a large rotational inertial mass can be obtained without increasing the overall axial length of the vibration control device.

  According to a fifth aspect of the present invention, there is provided an elastic member that is connected to the moving body and the structural floor and elastically deforms in a horizontal direction, and is provided on the structural floor. A rotating mechanism unit for converting, and the natural vibration of the horizontal vibration of the movable body is set to synchronize with the natural vibration of the horizontal vibration of the structural floor.

  In the invention of claim 5, the natural frequency of the horizontal vibration of the moving body is set so as to be synchronized with the natural frequency of the horizontal vibration of the structural floor, so that the horizontal direction of the structural floor caused by the disturbance Vibration is reduced.

  At this time, the horizontal displacement of the moving body is converted into the rotational motion of the additional mass body, that is, the rotational inertial mass obtained by the rotation of the additional mass body is larger than the actual mass of the additional mass body. This is equivalent to the addition of the additional mass body, and a large vibration reduction effect can be obtained as compared with the configuration in which the additional mass body is not rotated. In other words, a greater seismic control effect can be obtained compared to a configuration in which the additional mass is not rotated.

  In the present vibration damping device, the additional mass body is rotated by the horizontal vibration of the moving body to generate a rotational inertial mass. Therefore, for example, there are few installation restrictions compared with the structure which an additional mass body rotates by interlayer displacement.

  The invention of claim 6 has a damping member for damping the vibration of the moving body.

  In the invention of claim 6, the vibration of the moving body is converged at an early stage by the damping member.

  According to a seventh aspect of the present invention, the movable body has a shaft body arranged with the horizontal direction as an axial direction, and the rotation mechanism section is provided on the rotating body into which the shaft body is inserted and the structural floor. And a holding body for rotatably holding the rotating body, and an outer peripheral surface of the shaft body and an inner peripheral surface of the rotating body, and the linear motion in the axial direction of the shaft body around the axis of the rotating body. A screwing means for converting to a rotational motion; and the additional mass body integrally rotating with the rotating body and rotating about an axis.

  In the seventh aspect of the invention, the movable body is displaced in the horizontal direction, so that the shaft body is displaced in the horizontal direction. Then, the vertical displacement of the shaft body is converted into the rotational motion of the rotating body and the additional mass body by screwing means provided on the outer peripheral surface of the shaft body and the inner peripheral surface of the rotating body.

  The rotational inertia mass actually obtained is the sum of the additional mass body and the rotating body, but here, for convenience, the rotating mass of the rotating body is ignored.

  The rotating body and the additional mass body may be integrated. Alternatively, the rotating body and the holding body (or a part of the holding body) may be integrated.

  According to an eighth aspect of the present invention, the moving body includes a pair of first moving portion and second moving portion, the first moving portion, and the second moving portion that are provided on the structural floor with a space in the horizontal direction. And the elastic member includes a first elastic member provided between the first moving part and the structural floor, the second moving part, and the structural floor. A second elastic member provided between the first moving part and the second moving part, wherein one or more holding parts are provided between the first moving part and the second moving part. The additional mass bodies are respectively provided on the outer sides.

  In invention of Claim 8, the 1st moving part and the 2nd moving part are joined by the 1st elastic member and the 2nd elastic member respectively provided between the structure floors. The first moving unit and the second moving unit are joined by a shaft body that is arranged with the horizontal direction as the axial direction. Therefore, the first moving unit, the second moving unit, and the shaft body integrally vibrate in the horizontal direction. Moreover, the additional mass bodies respectively provided on both axial sides of the holding portion between the first moving portion and the second moving portion rotate to generate rotational inertial mass.

  Therefore, a larger rotational inertial mass is obtained. In addition, since the holding portion is provided between the first moving portion and the second moving portion and the shaft body is supported, the bending of the shaft body is suppressed even if the axial length of the shaft body is increased. .

  According to a ninth aspect of the present invention, the moving body includes a plurality of the shaft bodies arranged in parallel, and a plurality of the rotation mechanism sections are provided for each of the shaft bodies.

  According to the ninth aspect of the present invention, when one movable body is displaced in the vertical direction, the additional mass body of the rotation mechanism unit corresponding to the shaft bodies arranged in parallel rotates, so that a larger rotational inertial mass can be obtained. Moreover, since the shaft bodies are arranged in parallel, the total length in the axial direction of the vibration control device does not increase. That is, a large rotational inertial mass can be obtained without increasing the overall axial length of the vibration control device.

  According to a tenth aspect of the present invention, there is provided a rotational force applying means for applying a rotational force in a direction in which the additional mass body rotates when the additional mass body starts to rotate.

  In the invention of claim 10, in order for the additional mass body to start rotating, a force equal to or greater than the threshold value is required by various resistance forces. For this reason, even if the moving body tries to displace due to disturbance, the additional mass body does not start rotating until a force exceeding the threshold is generated.

  Therefore, when the additional mass body starts rotating, the rotational force is applied in the direction in which the additional mass body rotates by the rotational force applying means, so that the time from when the disturbance occurs to when the additional mass body starts rotating is increased. Becomes shorter.

  Alternatively, even if the disturbance does not exceed the threshold value (so that the additional mass body does not rotate), the additional mass body starts rotating, and a vibration control effect is obtained.

  The invention according to claim 11 has a rotational force applying means for applying a rotational force in a direction in which the additional mass body rotates when the additional mass body starts to rotate. Driving means for rotationally driving, pressure detecting means for detecting axial pressure acting on the shaft body, and a rotational direction for rotationally driving the rotating body based on the pressure value detected by the pressure detecting means. Control means for determining and controlling the driving means to rotationally drive the rotating body in the determined rotation direction.

  In the invention of claim 11, the timing for starting the application of the rotational force and the rotation direction are easily determined.

  For example, when the pressure value in the axial direction acting on the shaft body becomes larger than a state in which no disturbance is applied or becomes larger than a predetermined value, the additional mass body (rotating body) in the positive rotation direction (for example, clockwise) When a rotational force is applied to the motor and the torque becomes smaller than a state in which no disturbance is applied or becomes smaller than a predetermined value, the rotational force is applied to the additional mass body (rotary body) in the reverse rotational direction (for example, counterclockwise). .

  According to a twelfth aspect of the present invention, the rotational force applying means includes a rotational speed detecting means for detecting a rotational speed of the rotating body, and the control means includes the pressure value detected by the pressure detecting means, and the rotation. Based on the rotational speed value detected by the speed detecting means, the rotational force applied to the rotating body is calculated, and the rotational force of the driving means is controlled based on the calculation result.

  In the invention of claim 12, the rotational force applied to the rotating body is optimized or substantially optimized.

  In other words, when the pressure value detected by the pressure detection means is large and the rotational speed of the rotating body is slow, a large rotational force is applied to the rotating body, the pressure value detected by the pressure detecting means is small, and the rotating body rotates. When the speed is high, a small rotational force is applied to the rotating body.

  A thirteenth aspect of the invention includes the vibration control device according to any one of the first to twelfth aspects.

  In invention of Claim 13, the vibration by an earthquake etc. is reduced compared with the structure which is not equipped with the damping device of any one of Claims 1-12.

  In addition, in the case of the structure provided with both the damping device of any one of Claims 1-4, and the damping device of any one of Claims 5-8, it is the object of damping control. Both vertical and horizontal vibrations in the structure are reduced.

  According to the first aspect of the present invention, there are few installation restrictions compared to the configuration in which the additional mass body rotates due to the interlayer displacement.

  According to invention of Claim 2, compared with the structure which does not have a damping member, the vibration of a moving body is converged at an early stage.

  According to the third aspect of the present invention, the horizontal displacement of the shaft body is caused by the rotational movement of the rotating body and the additional mass body by the screwing means provided on the outer peripheral surface of the shaft body and the inner peripheral surface of the rotating body. Convert.

  According to the fourth aspect of the present invention, a large rotational inertial mass can be obtained without increasing the total axial length of the shaft body of the vibration control device.

  According to the invention described in claim 5, there are few restrictions on installation as compared with the configuration in which the additional mass body rotates by the interlayer displacement.

  According to the sixth aspect of the present invention, the vibration of the moving body is converged at an early stage as compared with the configuration having no damping member.

  According to the seventh aspect of the present invention, the horizontal displacement of the shaft body is caused by the rotational movement of the rotating body and the additional mass body by the screwing means provided on the outer peripheral surface of the shaft body and the inner peripheral surface of the rotating body. Convert.

  According to the eighth aspect of the invention, even if the length of the shaft body is increased and a plurality of additional mass bodies are provided, the bending of the shaft body can be suppressed.

  According to the ninth aspect of the present invention, a large rotational inertial mass can be obtained without increasing the total axial length of the shaft body of the vibration control device.

  According to the invention described in claim 10, it is possible to shorten the time from when the disturbance occurs until the additional mass body starts rotating. Alternatively, even if the disturbance is such that the force necessary for the additional mass body to rotate cannot be obtained (the additional mass body does not rotate), the additional mass body starts to rotate, and a damping effect can be obtained. it can.

  According to the eleventh aspect of the present invention, it is possible to easily determine the timing for starting the application of the rotational force and the rotation direction.

  According to the twelfth aspect of the present invention, the rotational force applied to the rotating body can be easily optimized or substantially optimized.

  According to the invention described in claim 13, it is possible to reduce vibration due to an earthquake or the like as compared with a structure that does not include the vibration control device according to any one of claims 1 to 12.

  In the present invention, “tuning” is not limited to the case where the period is completely tuned. Even if the natural period is slightly deviated from the design, it is assumed that it is “tuned” within a range where a vibration reduction effect (damping effect) can be obtained. That is, it is only necessary to be substantially synchronized.

It is a partial cross section perspective view which shows the damping device of 1st embodiment of this invention. It is a longitudinal cross-sectional view along the X direction which shows the damping device of 1st embodiment of this invention. FIG. 3 is a horizontal sectional view taken along line AA in FIG. 2. It is the enlarged view to which the upper part of FIG. 2 in the state which the limiter apparatus act | operated was expanded. It is a longitudinal cross-sectional view along the X direction which shows a damping device provided with a some shaft body and a rotation mechanism part as another example of 1st embodiment. It is a longitudinal cross-sectional view corresponding to FIG. 2 along the X direction which shows the damping device of the 1st modification of 1st embodiment of this invention. It is a longitudinal cross-sectional view corresponding to FIG. 2 which followed the X direction which shows the damping device of the 2nd modification of 1st embodiment of this invention. It is a perspective view which shows the damping device of 2nd embodiment of this invention. It is a longitudinal cross-sectional view along the X direction which shows the damping device of 2nd embodiment of this invention. FIG. 10 is a horizontal sectional view taken along the line AA in FIG. 9. It is a longitudinal cross-sectional view along the X direction which shows the state which the 1st moving column and 2nd moving column of the damping device shown in FIG. 9 displaced to the right side in a figure. It is a horizontal sectional view of the X direction central part which shows a damping device provided with a plurality of axis bodies and a rotation mechanism part as other examples of a first embodiment. It is a perspective view which shows the example which has arrange | positioned the damping device of 2nd embodiment of this invention along the X direction and the Y direction. It is a longitudinal cross-sectional view along the X direction including the block diagram which shows the damping device of 3rd embodiment of this invention. It is a horizontal sectional view along the AA line of FIG. It is a longitudinal cross-sectional view along the X direction including the block diagram which shows the damping device of 4th embodiment of this invention. It is a longitudinal cross-sectional view along the AA line of FIG. It is a schematic diagram which shows typically a structure provided with the damping device of 1st embodiment of this invention, and the damping device of 2nd embodiment. (A) shows the formula (1) for obtaining the rotational inertial mass obtained by rotating the additional mass body, (B) is a model diagram of the additional mass body, and (C) is a model diagram of (B). It is a table | surface which shows the calculation result which computed the rotational inertial mass obtained by rotating an additional mass body by Formula (1). It is explanatory drawing explaining the relationship between the pressure value which acts between a mobile body and a shaft body, the rotational speed of a rotary body, and the rotational force (rotation assistance force) provided to a rotary body. As another example of the second embodiment, it is a longitudinal sectional view along the Y direction showing a vibration control device having a configuration in which one shaft body is supported by a plurality of holding bodies.

As shown in FIG. 18, the damping device 100 of the first embodiment and the damping device 200 of the second embodiment are provided on the uppermost layer (uppermost floor) 12 of the multilayer structure 10.
The vibration damping device 100 of the first embodiment is provided so as to be suspended from a slab 52 that constitutes the ceiling of the uppermost layer (uppermost floor) 12.
The vibration control device 200 of the second embodiment is provided on the slab 54 constituting the uppermost (uppermost) floor 12.
Note that the left-right direction (horizontal direction) in FIG. 18 is the X direction, the vertical direction is the Z direction, and the horizontal direction orthogonal to the X direction and the Z direction, that is, the direction orthogonal to FIG.

  First, the damping device 100 of 1st embodiment is demonstrated using FIGS. 1-4.

  As shown in FIGS. 1 to 3, the vibration damping device 100 has a plate-like attachment portion 112 having a substantially rectangular shape in plan view, and the attachment portion 112 is fixed to the slab 52 by, for example, a bolt or the like. (See FIG. 2). The upper ends of the coil springs 120 are joined to the four corners of the mounting portion 112 in plan view. Four corners of the moving body 114 having the same shape as the mounting portion 112 are joined to the lower end of the coil spring 120. In other words, the movable body 114 is suspended from the attachment portion 112 by the coil spring 120, so that the movable body 114 is disposed horizontally with a space from the attachment portion 112 (slab 52). In the present embodiment, the coil spring 120 is constituted by a tension coil spring.

  A shaft body 130 is fixed to the central portion of the moving body 114 by bolts with the vertical direction as the axial direction. In the present embodiment, the shaft body 130 is fixed to the moving body 114 with a bolt, but may be fixed by other methods.

Between the moving body 114 and the slab 52, there is provided a rotation mechanism section 110 that generates rotational inertia when the moving body 114 is displaced in the vertical direction.
The rotating mechanism unit 110 includes a rotating body 140, a ball bearing 160, and an additional mass body 170 as main components.
The shaft body 130 is penetrated by the hole 144 of the columnar rotating body 140 arranged with the vertical direction as the axial direction.
A female screw 132 is formed on the outer peripheral surface of the shaft body 130. The female screw 132 is screwed into a male screw 142 formed on the inner peripheral surface of the hole 144 of the rotating body 140.

  On the other hand, a pair of fixing parts 150 and 151 are fixed to the attachment part 112 with a gap in the horizontal direction. The fixing parts 150 and 151 are, as viewed from the front, base parts 152 and 153 fixed to the attachment part 112, and a pair of plate-like plate parts 154 that extend downward from the base parts 152 and 153 and face each other. , And 155.

  A ball bearing 160 is fixed between the tip portions of the plate portions 154 and 155 of the pair of fixing portions 150 and 151. And the upper part of the rotary body 140 mentioned above is inserted and fixed to the inner ring 162 which comprises this ball bearing 160. FIG. Therefore, the rotating body 140 is configured to be rotatably provided on the attachment portion 112 (slab 52).

  An additional mass body 170 is joined to the outer periphery of the lower portion of the rotating body 140. The additional mass body 170 includes a disc portion 172 having a through-hole 171 formed in the center, and a ring-shaped adjustment weight 174 joined to the radially outer side of the lower surface 172A of the disc portion 172 (FIG. 3). reference).

  The rotating body 140 is inserted into the through hole 171 of the disk portion 172 constituting the additional mass body 170, and is joined to the rotating body 140 with an adhesive or the like. Therefore, the rotating body 140 and the additional mass body 170 rotate together. In addition, the adjustment weight 174 which comprises the additional mass body 170 is attached to the disc part 172 with the volt | bolt and the nut so that replacement | exchange is possible, for example.

  In the rotation mechanism unit 110 configured as described above, the shaft body 130 is displaced in the vertical direction as the movable body 114 is displaced in the vertical direction. The rotating body 140 provided so as to rotate is rotated. Then, the additional mass body 170 rotates together with the rotator 140, and rotational inertial mass is generated. That is, the displacement in the vertical direction of the moving body 114, that is, the linear motion in the vertical direction of the shaft body 130 is converted into the rotational motion of the additional mass body 170.

  Further, by adjusting the spring constant of the coil spring 120, the mass of the moving body 114, the rotational inertial mass generated when the additional mass body 170 rotates together with the rotating body 140, the vertical direction of the moving body 114 is adjusted. The natural frequency of the vibration is adjusted (set) so as to synchronize with the natural frequency of the vertical vibration of the slab 52 (structure 10).

  Adjustment of the rotational inertial mass generated when the additional mass body 170 rotates together with the rotating body 140 is adjusted mainly by adjusting the adjusting weight 174. However, it may be adjusted by other methods. For example, the adjustment may be made based on the diameter of the disk portion 172, the amount of displacement of the shaft body 130, the rotation speed ratio of the rotating body 140, and the like.

  In the present embodiment, when the shaft body 130 is displaced upward in the vertical direction, the rotating body 140 rotates clockwise in FIG. 2, and when the shaft body 130 is displaced downward in the vertical direction, counterclockwise in FIG. A male screw 142 and a female screw 132 are formed so that the rotating body rotates in the rotating direction. In this embodiment, for the sake of convenience, clockwise rotation is normal rotation and counterclockwise rotation is reverse.

  As shown in FIG. 2, limiters 180 are provided on the base portions 152 and 153 of the fixing portions 150 and 151 (see also FIG. 1). The limiter device 180 includes locking members 182 and 183 that extend from the base portions 152 and 153 of the pair of fixing portions 150 and 151 in a direction facing each other. The locking members 182 and 183 are pressed in opposite directions by compression coil springs 186 and 187. Inclined surfaces 184 and 185 are formed on the lower surface of the distal end portions of the locking members 182 and 183. Further, the gap between the tips 182A and 183A of the locking members 182 and 183 is set larger than the diameter of the shaft body 130.

  In addition, a disc portion 134 larger than the shaft diameter of the shaft body 130 is provided at the upper end portion of the shaft body 130. Further, the diameter of the disc portion 134 is larger than the gap between the tips 182A and 183A of the locking members 182 and 183.

  As shown in FIGS. 2 and 3, the seismic control device 100 according to the present embodiment has a box shape in which the whole is fixed to the slab 52 so as not to easily vibrate due to anything hitting the moving body 114. Is surrounded by a case 101.

Next, the operation of this embodiment will be described.
When the structure 10 (see FIG. 1) vibrates due to a disturbance such as an earthquake, the moving body 114 vibrates in the vertical direction. When the moving body 114 vibrates in the vertical direction, the shaft body 130 vibrates in the vertical direction integrally with the moving body 114. When the shaft body 130 vibrates in the vertical direction, the rotating body 140 and the additional mass body 170 rotate together.

  As described above, the natural frequency of the vertical vibration of the moving body 114 is adjusted by adjusting the spring constant of the coil spring 120, the mass of the moving body 114, the rotational inertial mass generated by the rotation of the additional mass body 170, and the like. Is adjusted (set) so as to synchronize with the natural frequency of the vertical vibration of the slab 52 (structure 10). Therefore, the vertical vibration of the slab 52 (structure 10) caused by the disturbance is reduced.

  At this time, the rotational inertial mass obtained by rotating the additional mass body 170 is equivalent to adding an additional mass body larger than the actual mass of the additional mass body 170, and the additional mass body 170 is not rotated. Compared with the configuration, a large vibration reduction effect can be obtained. In other words, a greater vibration control effect can be obtained as compared with a configuration in which the additional mass body 170 is not rotated.

  The rotational inertia mass m ′ is obtained by the equation (1) in FIG. Therefore, for example, as shown in the table of FIG. 19C, which shows the calculation result of calculating the additional mass body of the model diagram by the equation (1) in FIG. 19B, the mass md of the additional mass m is 1. In the case of 2t, the rotational inertia mass m ′ is 500 times 600t.

  Therefore, for example, a large vibration control effect can be obtained not only with a small vibration control by wind power but also with a large vibration such as an earthquake.

In addition, tuning to the natural frequency of the slab 52 subject to seismic production (vibration reduction) can be freely performed by adjusting the rotational inertia mass of the additional mass body 170, the mass of the moving body 114, the specifications of the coil spring 120, and the like. And it can be adjusted widely.
Therefore, not only the natural primary mode of the entire structure 10 but also the natural secondary mode, and further, the vibration reduction effect can be obtained by tuning to the specific frequency where the vibration and resonance of the higher order mode are problematic.
That is, the vibration control device 100 of this embodiment has a vibration control function similar to that of a tuned mass damper in principle, but a large vibration control effect can be obtained without requiring a heavy additional mass body.

Further, since the additional mass body 170 is rotated by the vertical vibration of the moving body 114 to generate a rotational inertial mass, the vibration damping device 100 only needs to be installed so as to be suspended from the slab 52. Therefore, it can be installed under installation conditions substantially the same as general TMD. Therefore, for example, there are few installation restrictions compared with the structure which an additional mass body rotates by interlayer displacement (horizontal displacement of the slab 52 and the slab 54).
That is, the vibration damping device 100 of the present embodiment has fewer installation restrictions compared to the configuration in which the additional mass body rotates due to the interlayer displacement, and the vertical vibration compared to a general TMD in which the additional mass body does not rotate. A great seismic control effect is obtained.

In the present embodiment, even if the mass of the additional mass body 170 is small, the burden force is equal to or greater than the inertial force due to the additional mass body in the conventional TMD. Therefore, it is necessary to allow sufficient strength for the design and installation of the vibration control device 100.
Therefore, in this embodiment, a limiter device 180 that stops the vibration of the moving body 114 is provided so that an excessive load is not applied and damaged.

  That is, when the vertical amplitude of the moving body 114 increases, the disk portion 134 at the upper end of the shaft body 130 hits the inclined surfaces 184 and 185 of the locking members 182 and 183 as shown in FIG. 182 and 183 are pushed right and left, and the disk part 134 moves to the upper side of the locking members 182 and 183. When the disc part 134 moves to the upper side of the locking members 182 and 183, the space between the pressed locking members 182 and 183 is reduced to the original. Thereby, the downward movement of the locking member 182 and 183 of the disc part 134 is prevented. That is, the vibration of the shaft body 130, that is, the vibration of the moving body 114 is stopped.

  The limiter device (limiter means) is not limited to a device having such a mechanism. For example, the coil spring 120 may yield when it receives a burden force exceeding an allowable limit.

  As shown by a two-dot broken line (imaginary line) in FIG. 1, the moving body 114 is provided with a hole 822, and the mounting portion 112 is provided with a rod body 820 that is inserted into the hole 822 of the moving body 114. The horizontal movement of 114 may be restricted. In FIG. 1, only one rod body 820 and one hole 822 are shown, but a plurality of rod bodies 820 and holes 822 may be provided.

  Moreover, in this embodiment, although the damping device 100 of 1st embodiment was provided in the slab 52 which comprises the ceiling of the uppermost layer (uppermost floor) 12 of the structure 10, it is not limited to this. The vibration control device 100 may be provided on the slab 54 constituting the floor in the uppermost layer 12. Or you may provide on the slab 52 (rooftop). In these cases, the vibration control device 100 is installed upside down. The coil spring 120 is not a tension coil spring but a compression coil spring.

  In addition, the additional mass body 170, the rotating body 140, and the ball bearing 160 and the fixing portions 150 and 151 corresponding to the holding members of the present embodiment are configured as separate members, but are not limited thereto. The additional mass body 170 and the rotating body 140 may be integrated. Alternatively, the rotating body 140 and the ball bearing 160 may be integrated.

In the present embodiment, the number of the shaft body 130 and the rotation mechanism unit 110 is one, but the present invention is not limited to this. The structure provided with the some shaft body 130 and the rotation mechanism part 110 may be sufficient.
For example, like the vibration control device 103 shown in FIG. 5, one moving body 115 is provided with two shaft bodies 130 and a rotation mechanism 110 in parallel in the X direction, and the two additional mass bodies 170 rotate and rotate. The structure which an inertial mass generate | occur | produces may be sufficient.
In such a configuration, a large rotational inertial mass can be obtained without increasing the distance between the slab 52 and the moving body 115. In this case, the rotation directions of the two additional mass bodies 170 may be set so as to rotate in the opposite directions.

  In FIG. 5, the two shaft bodies 130 and the rotation mechanism unit 110 are provided side by side in the X direction. However, the present invention is not limited to this. Two shaft bodies 130 and the rotation mechanism unit 110 may be provided side by side in the Y direction. Moreover, the four shaft bodies 130 and the rotation mechanism part 110 may be provided along with the X direction and the Y direction.

  Next, a modification of this embodiment will be described. In addition, the same code | symbol is attached | subjected to the member same as this embodiment, and the overlapping description is abbreviate | omitted.

First, the vibration damping device 102 of the first modification will be described with reference to FIG.
As shown in FIG. 6, an oil damper 126 is provided in the coil spring 120. The oil damper 126 has an upper end joined to the mounting portion 112 and a lower end joined to the moving body 114.

Next, the operation of the first modification will be described.
This modification also has the same effect as the first embodiment.
Further, the oil damper 126 attenuates the vibration of the moving body 114 due to a disturbance such as an earthquake, and converges early.

  Note that the oil damper 126 may not be provided in the coil spring 120. As long as it is joined to the attachment part 112 and the moving body 114, it may be provided anywhere. Further, it may be a viscous damper other than an oil damper, or another damping member such as a friction damper.

Next, a vibration control device 104 according to a second modification will be described with reference to FIG.
As shown in FIG. 7, the moving body 114 is connected to the attachment portion 112 by a laminated rubber body 190 instead of the coil spring 120 (see FIG. 2). Also in this embodiment, the four corners of the attachment portion 112 in plan view and the moving body 114 are connected by the laminated rubber body 190.

  The laminated rubber body 190 is formed in a cylindrical shape as a whole by alternately laminating metal plates 192 and rubber layers 194. The laminated rubber body 190 is rigid (high rigidity) in the laminating direction (horizontal direction in the present embodiment), and exhibits soft performance (low rigidity) in a direction orthogonal to the laminating direction (vertical direction in the present embodiment). Flange plates 196 and 198 projecting radially outward from the laminated rubber body 190 are integrally attached to both ends of the laminated rubber body 190 in the lamination direction.

  The laminated rubber body 190 is arranged with the laminating direction as the horizontal direction (X direction in the present embodiment), the upper end portion 196A of one flange plate 196 is joined to the mounting portion 112, and the lower end portion 198A of the other flange plate 198 is joined. It is joined to the moving body 114.

  In addition, the natural frequency of the vibration of the movable body 114 in the vertical direction can be adjusted by adjusting the elastic coefficient of the laminated rubber body 190 in the vertical direction (direction orthogonal to the lamination direction). The elastic coefficient of the laminated rubber body 190 in the vertical direction (direction perpendicular to the laminating direction) can be adjusted by the elastic coefficient and thickness of the rubber constituting the rubber layer 194, the number of laminated layers, or the like.

Next, the operation of the second modification will be described.
This modification also has the same effect as the first embodiment.
Furthermore, since the laminated rubber body 190 has high rigidity in the laminating direction, a load in the horizontal direction (X direction in the present embodiment) applied to the moving body 114 when a disturbance such as an earthquake is applied is suppressed.

  Also in this modification, an attenuation member such as an oil damper 126 (see FIG. 6) may be provided.

  Next, the vibration control device according to the second embodiment of the present invention will be described with reference to FIGS.

As shown in FIG. 8, the vibration damping device 200 of the second embodiment is installed on a slab 54 that constitutes the top floor of a multilayer structure.
A mounting portion 212 is fixed on the slab 54, and the first laminated rubber body 220 and the second laminated rubber body 221 are spaced above the mounting portion 212 in the horizontal direction (X direction in the present embodiment). It is fixed.

  The first laminated rubber body 220 and the second laminated rubber body 221 are formed in a cylindrical shape as a whole by alternately laminating metal plates 222 and rubber layers 224. The first laminated rubber body 220 and the second laminated rubber body 221 are rigid (high rigidity) in the laminating direction (vertical direction in the present embodiment) and soft in the direction orthogonal to the laminating direction (horizontal direction in the present embodiment) (low (Rigidity). Flange plates 226, 227, 228, and 229 projecting radially outward are integrally attached to both ends of the first laminated rubber body 220 and the second laminated rubber body 221 in the lamination direction.

The first laminated rubber body 220 and the second laminated rubber body 221 are arranged with the vertical direction as the lamination direction, and the lower flange plates 226 and 227 are joined to the mounting portion 212 (slab 54).
A columnar first moving column 214 is fixed to the upper flange plate 228 of the first laminated rubber body 220. Similarly, a columnar second moving column 215 is fixed to the upper flange plate 229 of the second laminated rubber body 221. Therefore, the first moving column 214 and the second moving column 215 are configured to be spaced apart in the horizontal direction (X direction in the present embodiment).
And the shaft body 230 arrange | positioned by making the horizontal direction (X direction in this embodiment) an axial direction is joined to the upper end part of the 1st moving column 214 and the 2nd moving column 215. As shown in FIG.

Between the first moving column 214 and the second moving column 215, when the first moving column 214, the second moving column 215, and the shaft body 230 are integrally displaced in the horizontal direction, a rotation mechanism that generates rotational inertia. A section 210 is provided.
The rotating mechanism unit 210 includes a rotating body 240, a ball bearing 160, and additional mass bodies 270 and 271 as main components.
The shaft body 230 penetrates the hole 244 of the columnar rotating body 240 arranged with the vertical direction as the axial direction.
A male screw 232 is formed on the outer peripheral surface of the shaft body 230. The female screw 232 is screwed into a female screw 242 formed on the inner peripheral surface of the hole 240 of the rotating body 240.

On the other hand, a fixed portion 250 is fixed to an intermediate portion between the first moving column 214 and the second moving column 215 in the mounting portion 212. The fixing part 250 includes a base part 256 fixed to the attachment part 212 and four column parts 251, 252, 253, and 254 extending upward from the corners on the upper surface of the base part 256. Has been. The ball bearing 160 is fixed between the column portion 251 and the column portion 253 of the fixed portion 250 and between the column portion 253 and the column portion 254.
The rotating body 240 described above is inserted and joined to the inner ring 162 constituting the ball bearing 160. That is, the axially central portions of the shaft body 230 and the rotating body 240 are fixed rotatably. Therefore, the rotating body 240 is configured to be rotatably provided on the attachment portion 212 (slab 54).

  Additional mass bodies 270 and 271 are joined to the outer periphery of both ends of the rotating body 240 in the axial direction. The additional mass bodies 270 and 271 have a disk shape with a through hole 272 and 273 formed in the center. Then, both end portions of the rotating body 240 are inserted into the through holes 272 and 273 of the additional mass bodies 270 and 271 and joined with an adhesive or the like. Therefore, the rotating body 240 and the additional mass bodies 270 and 271 rotate together. In the present embodiment, the additional mass body 270 and the additional mass body 271 have the same shape and the same mass.

In the rotation mechanism unit 210 configured as described above, the first moving column 214, the second moving column 215, and the shaft body 230 are integrally displaced in the horizontal direction (X direction in the present embodiment). The rotating body 240 rotatably provided on the attachment portion 212 (slab 54) rotates.
Then, the additional mass bodies 270 and 271 rotate together with the rotating body 240, and a rotational inertial mass is generated. That is, the horizontal displacement of the first moving column 214 and the second moving column 215, that is, the horizontal linear motion of the shaft body 230 is converted into the rotational motion of the additional mass body 170.

  In addition, the elastic modulus of the first laminated rubber body 220 and the second laminated rubber body 221, the mass of the first moving column 214 and the second moving column 215, the rotational inertia mass generated by the rotation of the additional mass bodies 270 and 271, etc. By adjusting the natural frequency of the first moving column 214 and the second moving column 215 in the horizontal direction (X direction in the present embodiment), the horizontal frequency (X in the present embodiment) of the slab 54 (structure 10) is adjusted. (Direction) is adjusted (set) to synchronize with the natural frequency.

  Adjustment of the rotational inertial mass generated when the additional mass bodies 270 and 271 rotate integrally with the rotating body 140 is adjusted by adjusting the mass of the additional mass bodies 270 and 271. Similar to the first embodiment, the adjustment weight 174 (see FIG. 1, FIG. 2, etc.) may be joined to adjust the mass of the adjustment weight 174. Moreover, you may adjust by methods other than this. For example, the adjustment may be made by adjusting the diameters of the additional mass bodies 270 and 271, the displacement amount of the shaft body 230, and the rotational speed ratio of the rotating body 240.

  An oil damper 262 is joined to the lower end portion of the first moving column 214 and the base portion 256 of the fixed portion 250. Similarly, an oil damper 263 is joined to the lower end portion of the second moving column 215 and the base portion 256 of the fixed portion 250.

  In the present embodiment, when the shaft body 230 is displaced to the right in the horizontal direction (X direction) in FIG. 9 (see FIG. 11) (see FIG. 11), the rotating body 240 rotates in the clockwise direction in FIG. 9, the male screw 242 and the female screw 232 are formed so that the rotating body 240 rotates in the counterclockwise direction in FIG. 2 when it is displaced to the lower left side in the horizontal direction (X direction). In this embodiment, for the sake of convenience, clockwise rotation is normal rotation and counterclockwise rotation is reverse.

Further, the vibration control device 200 is surrounded by a box-shaped housing 201 fixed to the slab 54 so that the vibration control device 200 does not easily vibrate by hitting the moving columns 214 and 215.
Further, similarly to the first embodiment, a limiter device or a limiter mechanism for stopping the vibration of the moving body 114 may be provided so that an excessive load is not applied and damaged.

Next, the operation of this embodiment will be described.
When the structure 10 (see FIG. 18) vibrates due to a disturbance such as an earthquake, the first moving column 214, the second moving column 215, and the shaft body 230 are integrally vibrated in the horizontal direction (X direction in this embodiment). (See FIGS. 9 and 11). When the shaft body 230 vibrates in the horizontal direction, the rotating body 240 and the additional mass bodies 270 and 271 rotate together. Then, the natural frequency of the horizontal vibration of the movable columns 214 and 215 is adjusted (set) so as to be synchronized (or substantially tuned) with the natural frequency of the slab 54 in the horizontal direction (X direction in the present embodiment). Thereby, the vibration of the horizontal direction of the slab 54 (structure 10) is reduced.

  The rotational inertial mass obtained by rotating the additional mass bodies 270 and 271 is equivalent to adding an additional mass body larger than the actual mass of the additional mass bodies 270 and 271, and the additional mass bodies 270 and 271 are rotated. Compared with a configuration that does not, a large vibration reduction effect can be obtained. In other words, a greater vibration control effect can be obtained as compared with a configuration in which the additional mass bodies 270 and 271 are not rotated.

Further, since the additional mass bodies 270 and 270 are rotated by the horizontal vibration of the first moving column 214 and the second moving column 215 to generate a rotational inertial mass, the vibration damping device 200 is installed on the slab 54. Just do it. Therefore, it can be installed under installation conditions substantially the same as general TMD. Therefore, for example, there are few installation restrictions compared with the structure which an additional mass body rotates by interlayer displacement (horizontal displacement of the slab 52 and the slab 54).
That is, the vibration damping device 200 of the present embodiment has fewer installation restrictions compared to the configuration in which the additional mass body rotates due to the interlayer displacement, and the vertical vibration compared to the general TMD that does not rotate the additional mass body. A great seismic control effect is obtained.

Further, in the present embodiment, the axially central portions of the shaft body 230 and the rotating body 240 by the ball bearing 160 fixed to the fixed portion 250 provided between the first moving column 214 and the second moving column 215. Is fixed rotatably. Further, additional mass bodies 270 and 271 are provided on both outer sides in the axial direction of the ball bearing 160 fixed to a fixed portion 250 provided between the first moving column 214 and the second moving column 215, respectively.
Therefore, a larger rotational inertial mass is obtained. Moreover, since the axial direction center part of the shaft body 230 is supported, even if the axial direction full length of the shaft body 230 is lengthened, the curve of the shaft body 230 is suppressed.

In addition, the vibrations of the moving columns 214 and 215 are attenuated by the oil dampers 262 and 263 and converged at an early stage.
The oil dampers 262 and 263 are not essential members. It may be omitted as appropriate. Further, it may be a viscous damper other than an oil damper, or another damping member such as a friction damper.

  In addition, the additional mass bodies 270 and 271, the rotating body 240, and the ball bearing 160 and the fixing portion 250 corresponding to the holding member are configured as separate members, but are not limited thereto. The additional mass bodies 270 and 271 and the rotating body 240 may be integrated. Alternatively, the rotating body 240 and the ball bearing 160 may be integrated.

In the present embodiment, the number of rotation mechanism units 210 is one, but the present invention is not limited to this. The structure provided with the some rotation mechanism part 210 may be sufficient.
For example, as in the vibration control device 202 shown in FIG. 12, a plurality of rotation mechanism units 210 are provided in parallel, and a total of four additional mass bodies 270 and 271 rotate to generate rotational inertial mass. Good. In such a configuration, a large rotational inertial mass can be obtained without increasing the distance between the moving column 216 and the moving column (not shown) facing the moving column 216. In this case, the rotation directions of the two rotation mechanism units 210 may be set so as to rotate in the opposite directions.

  Moreover, you may be comprised only by the left side (or right side) containing the fixing | fixed part 250 of FIG. That is, you may be comprised with the 1st support | pillar part 214, the fixing | fixed part 250, the ball bearing 160, the laminated rubber main body 220, the oil damper 262, and the shaft body 230 (to be exact, a shaft body shorter than the shaft body 230).

  Further, as shown in FIG. 21, a plurality of fixed portions 250 and a ball bearing 160 are provided between the first moving column 214 and the second moving column 215, and the additional mass bodies 270 are respectively provided on both outer sides in the axial direction of the ball bearing 160. , 271 may be provided.

  In the present embodiment, the vibration control device 200 of the second embodiment is provided on the slab 54 that forms the ceiling of the uppermost layer (uppermost floor) 12 of the structure 10, but the present invention is not limited to this. The vibration control device 200 may be provided so as to be suspended from the slab 52 constituting the floor in the uppermost layer 12. Or you may provide on the slab 52 (rooftop).

  In the present embodiment, the vibration control device 200 is arranged so as to have a vibration reduction effect with respect to vibration in the X direction. However, the arrangement direction may be appropriately determined in consideration of the structure of the structure 10, the ground on which the structure 10 is constructed, the direction of the shaking of the earthquake, and the like.

  Furthermore, a plurality of vibration control devices 200 may be provided in different directions so as to have a vibration reduction effect (a vibration control effect) with respect to a plurality of vibration directions. For example, as shown in FIG. 12, by providing a vibration control device 200 disposed along the X direction and a vibration control device 200 disposed along the Y direction, the horizontal direction in both the X direction and the Y direction is provided. Directional vibration is reduced.

  As shown in FIG. 18, the structure 10 is provided with both the vibration control device 100 of the first embodiment and the vibration control device 200 of the second embodiment. Therefore, the structure 10 is reduced in both vertical and horizontal vibrations.

  Moreover, in the structure 10, as shown in FIG. 18, the vibration control device 100 of the first embodiment and the vibration control device 200 of the second embodiment are provided on the uppermost layer (top floor) 12 (or the roof). It is not limited to. You may provide in layers other than the uppermost layer 12. FIG. Or what is necessary is just to provide in several layers not only in one layer. Moreover, you may provide the damping device 100 of 1st embodiment, and the damping device 200 of 2nd embodiment in a separate layer.

  That is, at least one of the layer 12, the layer 14, the layer 16, the layer 18, the layer 20, and the layer 22 in the structure 10 of the present embodiment is provided with the vibration control device 100 of the first embodiment and the second implementation. What is necessary is just to provide at least one of the damping device 200 of a form.

  Next, a vibration damping device 300 according to the third embodiment will be described with reference to FIGS. 14 and 15. In addition, the same code | symbol is attached | subjected to the member same as the said embodiment, and the overlapping description is abbreviate | omitted.

  As shown in FIGS. 14 and 15, the vibration damping device 300 of the third embodiment is different from the vibration damping device 100 of the first embodiment in that a rotation assist device 310 is provided, and other configurations are provided. Are the same. Therefore, only the rotation assist device 310 will be described in detail.

  The rotation assist device 310 includes a pressure sensor 320, a drive device 330, a rotation speed detection sensor 340, and a control device 350 as main components.

  The pressure sensor 320 is sandwiched between the shaft body 130 and the moving body 114. The pressure sensor 320 detects a pressure acting in the vertical direction between the shaft body 130 and the moving body 114 (detects an axial pressure acting on the shaft body 130).

  The rotation speed detection sensor 340 is provided on the lower surface of the rotating body 140 and detects the rotation speed of the rotating body 140.

  A driving device 330 for rotating the rotating body 140 is provided above the ball bearing 160. The drive device 330 is provided on a ring 162 on the inner side of the ball bearing 160 into which the rotating body 140 is inserted and rotates together with the ring 162, and a drive shaft 332 of the drive motor 334, and a chain 338. It is set to be wrapped around.

  Therefore, when the drive shaft 332 of the drive motor 334 rotates, the rotating body 140 rotates. Note that the drive shaft 332 of the drive motor 334 rotates in both the forward and reverse directions. That is, the driving device 330 can rotate the rotating body 140 in both the normal rotation and the reverse rotation.

  The pressure sensor 320, the drive device 330, and the rotation speed detection sensor 340 are connected to the control device 350. The drive device 330 (drive motor 334) is controlled by a control device.

  The electrical system structure of the control device 350 according to the present embodiment may be anything. For example, the control device 350 includes a CPU (central processing unit) that controls the overall operation, a RAM that is used as a work area when the CPU executes various processing programs, a ROM that stores various control programs, various parameters, and the like in advance. A secondary storage device such as a hard disk device used for storing various kinds of information, a pressure sensor 320, a drive device 330 (drive motor 334), and a drive power supply for the rotational speed detection sensor 340 are provided.

Next, the operation of this embodiment will be described.
Here, in the vibration damping device 100 of the first embodiment, in order for the rotating body 140 to start rotating, a force equal to or greater than the threshold is required due to various resistance forces (such as frictional resistance forces between the members). The For this reason, even if the moving body 114 (shaft body 130) tries to be displaced in the vertical direction due to disturbance, the rotating body 140 (additional mass body 170) does not start rotating until a force exceeding the threshold is generated.

  However, in the present embodiment, when the rotating body 140 (additional mass body 170) starts rotating (before the rotation accurately starts), the driving device 330 applies a rotational force to the rotating body 140, thereby causing a disturbance. The time until the rotating body 140 starts rotating after the occurrence of this is shortened.

  Alternatively, even if the disturbance does not exceed the threshold (the rotating body 140 (additional mass body 170) does not rotate), the rotating body 140 starts to rotate, and even if it is a minute vibration, the vibration control is performed. The effect is obtained.

  In the present embodiment, the control of the rotational force applied to the rotating body 140 is referred to as rotation assist control.

Next, the rotation assist control by the control device 350 will be described in detail.
First, the moving body 114 tends to be displaced upward due to disturbance. However, the rotating body 140 does not rotate due to various resistance forces. Therefore, the pressure between the moving body 114 and the shaft body 130 becomes larger than when no disturbance acts. Further, since the rotating body 140 is not rotating, the rotation speed is not detected.

  In such a state, the control device 350 controls the driving device 330 to apply a rotational force in a direction in which the rotating body 140 is rotated forward. As a result, the rotating body 140 starts rotating. When the rotating body 140 rotates, the rotational speed of the rotating body 140 is detected.

  The rotation assist force is reduced according to the rotation speed of the rotating body 140. Alternatively, when a predetermined rotational speed is reached, the application of rotational force is interrupted by a clutch mechanism or the like.

  The amplitude of vibration is reversed, and the moving body 114 tends to be displaced downward. However, the rotating body 140 does not rotate due to various resistance forces. Therefore, the pressure between the moving body 114 and the shaft body 130 becomes smaller than when no disturbance is applied. Moreover, since the rotating body 140 is not rotating, the rotation speed is not detected.

  In such a state, the control device 350 controls the driving device 330 to apply a rotational force in the direction in which the rotating body 140 rotates in the reverse direction. As a result, the rotating body 140 starts rotating. When the rotating body 140 rotates, the rotational speed of the rotating body 140 is detected.

  The rotation assist force is reduced according to the rotation speed of the rotating body 140. Alternatively, when a predetermined rotational speed is reached, the application of rotational force is interrupted by a clutch mechanism or the like.

  When the amplitude of the vibration is reversed and the moving body 114 tries to displace upward, a rotational force in the positive rotation direction is similarly applied to the rotating body 140.

  As described above, when the rotating body 140 (additional mass body 170) starts to rotate, the rotating device 140 starts to rotate after a disturbance occurs by applying a rotational force to the rotating body 140 by the driving device 330. The time to do is shortened.

  Alternatively, even if the disturbance does not exceed the threshold (the rotating body 140 (additional mass body 170) does not rotate), the rotating body 140 starts to rotate, and even if it is a minute vibration, the vibration control is performed. An effect is obtained.

  FIG. 20 is a graph schematically showing the rotation assist control. In addition, this graph does not show the change of the numerical value actually detected by the pressure sensor 340 and the rotational speed detection sensor 340, but is a graph schematically shown for the purpose of explaining the control to the last.

The rotation assist control is not limited to the above control.
For example, the rotation speed detection sensor 340 may not be provided. In this case, for example, the application of the rotational force may be automatically interrupted by a clutch mechanism or the like after a predetermined time has elapsed since the rotating body 140 applied the rotational force.

  Further, for example, when the pressure value acting between the moving body 114 and the shaft body 130 is larger than a state in which no disturbance occurs and larger than a predetermined value so that the rotating body 14 does not rotate in a minute vibration, When a rotational force that rotates the rotating body 140 in the forward direction is applied to the rotating body 140 and the rotating body 140 is smaller than a state where no disturbance is generated and smaller than a predetermined value, the rotating body 140 is rotated in the reverse direction (for example, counterclockwise). You may control to apply the rotational force to rotate to the rotary body 140. FIG.

  Further, for example, a moving body displacement speed detecting means for detecting the displacement speed in the vertical direction of the moving body 114 may be provided to optimize the rotational force applied to the rotating body 140 more accurately.

  Further, in order to prevent an excessive load from being damaged, the brake may be applied using the driving device 330 when the rotational speed of the rotating body 140 exceeds a predetermined value.

  Moreover, the rotation assistance apparatus and control of 3rd embodiment are applicable also to the modification of 1st embodiment.

  Next, a vibration control device 400 according to the fourth embodiment will be described with reference to FIGS. 14 and 15. In addition, the same code | symbol is attached | subjected to the member same as the said embodiment, and the overlapping description is abbreviate | omitted.

  As shown in FIGS. 16 and 17, the vibration control device 400 of the fourth embodiment is different from the vibration control device 200 of the second embodiment in that a rotation assist device 410 is provided, and other configurations are provided. Are the same. Therefore, only the rotation assist device 410 will be described in detail. Furthermore, since the rotation assist device 410 has substantially the same configuration as the rotation assist device 310 of the third embodiment, a duplicate description is omitted.

  The rotation assist device 410 includes a pressure sensor 320, a drive device 430, a rotation speed detection sensor 340, and a control device 350 as main components.

  The pressure sensor 320 is sandwiched between the shaft body 230 and the first moving column 214 and the second moving column 215. Further, the pressure sensor 320 detects pressure acting in the horizontal direction (X direction in the present embodiment) between the shaft body 230 and the first moving column 214 and the second moving column 215 (acts on the shaft body 230). Detect axial pressure).

  The rotation speed detection sensor 340 is provided at both ends in the axial direction of the rotator 240 and detects the rotation speed of the rotator 240.

  A driving device 430 for rotating the rotating body 240 is provided on the right side of the ball bearing 160 in the X direction. The driving device 430 is provided with a chain 338 on a sprocket 336 that is provided next to the ring 162 inside the ball bearing 160 into which the rotating body 240 is inserted and rotates together with the ring 162 and a driving shaft 332 of the driving motor 334. It is set to be wrapped around.

  Therefore, when the drive shaft 332 of the drive motor 334 rotates, the rotating body 240 rotates. Note that the drive shaft 332 of the drive motor 334 rotates in both the forward and reverse directions. That is, the driving device 330 can rotate the rotating body 240 in both the normal rotation and the reverse rotation.

  The pressure sensor 320, the driving device 430, and the rotation speed detection sensor 340 are connected to the control device 350. The drive device 430 (drive motor 334) is controlled by a control device.

Next, the operation of this embodiment will be described.
Here, in the vibration damping device 200 of the second embodiment, in order for the rotating body 240 to start rotating, a force equal to or greater than the threshold is required due to various resistance forces (such as frictional resistance forces between the members). The For this reason, even if the first moving column 214 and the second moving column 215 (shaft body 230) try to move in the vertical direction due to disturbance, the rotating body 140 (additional mass body 170) rotates until a force exceeding the threshold is generated. Do not start.

  However, in the present embodiment, when the rotating body 240 (additional mass bodies 270 and 271) starts rotating, the driving body 330 applies a rotational force to the rotating body 240 to generate a rotating body after a disturbance occurs. The time until 240 starts rotating is shortened.

  Alternatively, even if there is a disturbance that does not exceed the threshold (so that the rotating body 240 (additional mass body 270, 271) does not rotate), even if the rotating body 240 starts to rotate, even if it is a minute vibration A damping effect is obtained.

  Note that the rotation assist control of this embodiment is the same as that of the third embodiment except that the vertical direction is the left-right direction, and a description thereof will be omitted.

  The present invention is not limited to the above embodiment. Needless to say, various embodiments can be implemented without departing from the scope of the present invention.

  For example, as an example of the elastic member, the coil spring 120, the laminated rubber body 190, the first laminated rubber body 220, and the second laminated rubber body 221 are used, but not limited thereto. Any member that can be elastically deformed in the vertical direction or the horizontal direction may be used.

10 Structure (damping structure)
52 Slab (structure floor)
54 Slab (structure floor)
56 Slab (structure floor)
58 Slab (structure floor)
60 Slab (structure floor)
62 Slab (structure floor)
64 Slab (structure floor)
DESCRIPTION OF SYMBOLS 100 Damping device 102 Damping device 103 Damping device 104 Damping device 110 Rotating mechanism part 114 Moving body 115 Moving body 120 Coil spring (elastic member)
126 Oil damper (damping member)
130 Shaft body 132 Female thread (screwing means)
140 Rotating body 142 Male screw (screwing means)
160 Ball bearing (holding body)
170 Additional mass 190 Laminated rubber body (elastic member)
200 Damping device 202 Damping device 210 Rotating mechanism 214 First moving column (first moving unit, moving body)
215 Second moving column (second moving part, moving body)
220 First laminated rubber body (first elastic member, elastic member)
221 Second laminated rubber body (first elastic member, elastic member)
230 Shaft body 232 Female screw (screwing means)
240 Rotating body 242 Male screw (screwing means)
262 Oil damper (damping member)
263 Oil damper (damping member)
270 Additional mass body 271 Additional mass body 300 Damping device 310 Rotation assist device (rotation force applying means)
320 Pressure sensor (pressure detection means)
330 Driving device (driving means)
340 Rotational speed detection sensor (Rotational speed detection means)
400 Seismic control device 410 Rotation assist device
430 Driving device (driving means)

Claims (13)

An elastic member connected to the moving body and the structural floor, supporting the moving body, and elastically deforming in a vertical direction;
A rotation mechanism that is provided on the structural floor and converts the displacement of the movable body in the vertical direction into the rotational motion of the additional mass body;
With
A vibration control device that is set so that a natural vibration of a vertical vibration of the moving body is synchronized with a natural vibration of a vertical vibration of the structural floor.   The vibration control device according to claim 1, further comprising a damping member that damps vibration of the moving body. The moving body has a shaft body arranged with the vertical direction as an axial direction,
The rotation mechanism unit is
A rotating body into which the shaft is inserted;
A holding body provided on the structure floor and rotatably holding the rotating body;
A screwing means provided on an outer peripheral surface of the shaft body and an inner peripheral surface of the rotating body, and converting a linear motion in the axial direction of the shaft body into a rotational motion around the axis of the rotating body;
The additional mass body that rotates integrally with the rotating body around an axis;
Having
The vibration control apparatus according to claim 1 or 2. The movable body has a plurality of the shaft bodies arranged in parallel,
A plurality of the rotation mechanism units are provided for each shaft body,
The vibration control device according to claim 3. An elastic member connected to the moving body and the structural floor, supporting the moving body, and elastically deforming in a horizontal direction;
A rotation mechanism that is provided on the structural floor and converts the displacement in the horizontal direction of the movable body into the rotational motion of the additional mass; and
With
A vibration control device that is set so that a natural vibration of a horizontal vibration of the movable body is synchronized with a natural vibration of a horizontal vibration of the structural floor. Having a damping member for damping the vibration of the moving body,
The vibration control device according to claim 5. The moving body has a shaft body arranged with the horizontal direction as an axial direction,
The rotation mechanism unit is
A rotating body into which the shaft is inserted;
A holding body provided on the structure floor and rotatably holding the rotating body;
A screwing means provided on an outer peripheral surface of the shaft body and an inner peripheral surface of the rotating body, and converting a linear motion in the axial direction of the shaft body into a rotational motion around the axis of the rotating body;
The additional mass body that rotates integrally with the rotating body around an axis;
Having
The vibration control device according to claim 5 or 6. The moving body is
A pair of first moving part and second moving part provided at an interval in the horizontal direction on the structural floor;
The shaft body joined to the first moving part and the second moving part;
Have
The elastic member is
A first elastic member provided between the first moving part and the structural floor;
A second elastic member provided between the second moving part and the structural floor;
Have
One or more holding parts are provided between the first moving part and the second moving part,
The additional mass bodies are respectively provided on both outer sides in the axial direction of the holding portion,
The vibration control device according to claim 7. The movable body has a plurality of the shaft bodies arranged in parallel,
A plurality of the rotation mechanism units are provided for each shaft body,
The vibration control device according to claim 7 or claim 8. When the additional mass body starts to rotate, the additional mass body has a rotational force applying means for applying a rotational force in a rotating direction.
The vibration control device according to any one of claims 1 to 9. When the additional mass body starts to rotate, it has a rotational force applying means for applying a rotational force in a direction in which the additional mass body rotates,
The rotational force applying means is
Driving means for rotating the rotating body;
Pressure detecting means for detecting axial pressure acting on the shaft body;
Control means for determining a rotational direction for rotationally driving the rotating body based on the pressure value detected by the pressure detecting means, and for controlling the driving means to rotationally drive the rotational body in the determined rotational direction; ,
Having
The vibration control device according to any one of claim 3, claim 4, claim 7, claim 8, and claim 9. The rotational force applying means is
A rotation speed detecting means for detecting the rotation speed of the rotating body;
The control means includes
Based on the pressure value detected by the pressure detecting means and the rotational speed value detected by the rotational speed detecting means, the rotational force applied by the driving means to the rotating body is calculated, and based on the calculation result. To control the rotational force of the drive means,
The vibration control device according to claim 11.   A vibration control structure comprising the vibration control device according to any one of claims 1 to 12.

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