JP2010090926A - Viscous mass damper and viscous mass damper with spring - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a viscous mass damper and a viscous mass damper with a spring which can adjust dynamic property or vibration property by a simple structure. <P>SOLUTION: The damper, which is equipped with a direct drive shaft 110 in which a male screw directing a screw feed direction along a displacement direction of the direct drive displacement is provided, a rotating body 120 in which a female screw engaged with the male screw is provided, a frame 130 freely rotatably supporting the rotating body 120, and a viscous fluid 140 enclosed in a clearance between an inner surface of the frame 130 and the rotating body 120. wherein at least one section of the clearance between the inner surface of the frame 130 and the rotating body 120 can be changed. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a viscous mass damper that generates a reaction force corresponding to a linear displacement, and a viscous mass damper with a spring in which a viscous mass damper and an elastic body are connected in series. In particular, the present invention relates to a viscous mass damper whose dynamic characteristics can be easily adjusted and a viscous mass damper with a spring.

When an earthquake occurs, target structures such as buildings and structures are shaken horizontally and vertically.
If the acceleration level due to an earthquake or the like is large, the target structure may be damaged, or an object in the target structure may receive an acceleration exceeding the expectation, or may be displaced beyond the expectation.
Therefore, the seismic isolation device that reduces the vibration energy transmitted from the foundation to the target structure or isolates the vibration, or absorbs the vibration energy when the target structure vibrates and reduces the vibration level to control the vibration. Devices having various structures have been tried as vibration damping devices.
By appropriately setting the specifications of the structure and the elements constituting the structure, desired seismic isolation performance and damping performance can be exhibited.

For example, a linear motion shaft provided with a male screw directed in the screw feed direction along a displacement direction of the linear motion displacement, a rotating body provided with a female screw fitted to the male screw, a frame that rotatably supports the rotating body, and a frame A viscous mass damper composed of a viscous fluid enclosed in a gap between the inner surface and the rotating body is used.
The viscous mass damper has an apparent inertial mass mr and a linear motion axis that are constant values obtained by dividing the reaction force acting when the linear motion shaft is linearly displaced at a predetermined relative acceleration by the relative acceleration of the linear motion displacement. And a damping coefficient c corresponding to a value obtained by dividing the reaction force acting when the linear displacement is performed at the relative speed by the relative speed.

A viscous mass damper with a spring in which an elastic body is connected in series to the viscous mass damper is used.
The viscous mass damper with a spring has a modulus of elasticity kb, which is a value obtained by dividing the reaction force generated when the spring element is displaced by a relative distance in the linear motion direction, and the linear motion axis of the viscous mass damper in the linear motion direction. The damper natural frequency ωr corresponding to the apparent inertial mass mr, which is the value obtained by dividing the reaction force acting in the linear motion direction by the relative acceleration when linearly moving at a predetermined relative acceleration, and the linear motion of the viscous mass damper And a damping coefficient c corresponding to a value obtained by dividing the reaction force acting in the linear motion direction by the relative velocity when the shaft is linearly moved at a constant relative velocity.

When the linear motion shaft is linearly displaced, the rotating body rotates.
A rotational reaction force corresponding to the rotational inertia ratio of the rotating body is generated. The rotational reaction force is converted into a reaction force in the direction of linear displacement by the action of the male screw and the female screw.
When the rotating body rotates, a shearing force is generated in the viscous fluid enclosed in the gap between the rotating body and the frame, and a rotational reaction force corresponding to the shearing force is generated. The rotational reaction force is converted into a reaction force in the direction of linear displacement by the action of the male screw and the female screw.
The reaction force due to the inertial force and the shearing force has a dynamic characteristic as a mass system in which an apparent large mass and a large damper are combined as compared with the mass of the rotating body and the amount of the viscous fluid.
Since the viscous mass damper and the elastic body are connected in series, it has vibration characteristics as a spring mass system combined with an apparent large mass and a large damper.

  If the dynamic characteristics or vibration characteristics of these viscous mass dampers and spring-equipped viscous mass dampers can be easily adjusted, more preferable seismic isolation performance and damping performance can be exhibited.

Japanese Patent Laid-Open No. 10-100955 JP-A-10-184757 JP 2000-017885 A JP 2003-138784 A JP 2004-239411 A JP 2005-180492 A JP 2005-207547 A

  The present invention has been devised in view of the above-described problems, and an object thereof is to provide a viscous mass damper and a spring-equipped viscous mass damper capable of adjusting dynamic characteristics or vibration characteristics with a simple structure.

  In order to achieve the above object, the viscous mass damper that generates a reaction force corresponding to the linear motion displacement according to the present invention is provided with a linear motion provided with a male screw directed in the screw feed direction along the displacement direction of the linear motion displacement. A shaft, a rotating body provided with a female screw fitted to the male screw, a frame that rotatably supports the rotating body, and a viscous fluid sealed in a gap between the inner surface of the frame and the rotating body. The separation distance of at least a part of the gap between the inner surface of the frame and the rotating body can be changed.

According to the configuration of the present invention, the linear motion shaft is provided with a male screw having a screw feed direction directed along the displacement direction of the linear motion displacement. The rotating body is provided with a female screw that fits into the male screw. A frame rotatably supports the rotating body. A viscous fluid is enclosed in a gap between the inner surface of the frame and the rotating body. The separation distance of at least a part of the gap between the inner surface of the frame and the rotating body can be changed.
As a result, the attenuation coefficient c changes in response to the change in the separation distance of at least a part of the gap between the inner surface of the frame and the rotating body.

  Below, the viscous mass damper which concerns on embodiment of this invention is demonstrated. The present invention includes any of the embodiments described below, or a combination of two or more of them.

Further, the viscous mass damper according to an embodiment of the present invention includes a disk-shaped rotating member in which the rotating body rotates around a central axis corresponding to the linear motion of the linear motion shaft, and the frame includes the frame A pair of disk-shaped side plate members sandwiching both disk-shaped side surfaces of the rotating member from both sides, and at least one of the pair of side plate members is relatively close to or spaced from the rotating member. Moving.
With the configuration of the embodiment according to the present invention, the disk-like rotating member of the rotating body rotates around the central axis corresponding to the linear motion of the linear motion shaft. A pair of disk-shaped side plate members of the frame sandwiches both disk-shaped side surfaces of the rotating member from both sides. At least one of the pair of side plate members relatively moves so as to approach or separate from the rotating member.
As a result, the damping coefficient c changes in response to the relative movement of at least one of the pair of side plate members so as to approach or separate from the rotating member.

Furthermore, the viscous mass damper according to the embodiment of the present invention includes a screw-type coupling member that couples the pair of side plate members with the frame sandwiching the rotating member from both sides and the pair of side plate members by a screw structure. When the screw type coupling member is twisted, the pair of side plate members approaches or separates from each other, and at least one of the pair of side plate members approaches or separates from the rotating member. Can be moved relative to each other,
With the configuration of the embodiment according to the present invention, the frame includes a pair of disk-shaped side plate members and a screw type coupling member. A pair of disk-shaped side plate members sandwich the rotating member from both sides. A screw-type coupling member connects the pair of side plate members by a screw structure. When the threaded coupling member is twisted, the pair of side plate members can move relative to each other so that at least one of the pair of side plate members approaches or separates from the rotating member. .
As a result, the damping coefficient c changes corresponding to the relative movement of at least one of the pair of side plate members so as to approach or separate from the rotating member.

Furthermore, the viscous mass damper according to the embodiment of the present invention has a pair of disk-shaped side plate members in which the frame sandwiches the rotating member from both sides, and the pair of side plate members are screwed at the edges of each other. When coupled and at least one of the pair of side plate members is rotated, the pair of side plate members approach or separate from each other, and at least one of the pair of side plate members approaches or separates from the rotation member. You can move relative.
With the configuration of the embodiment according to the present invention, a pair of disk-shaped side plate members of the frame sandwich the rotating member from both sides. The pair of side plate members are screwed together at the edges of each other. When at least one of the pair of side plate members is rotated, the pair of side plate members approach or separate from each other, and at least one of the pair of side plate members approaches or separates from the rotating member. Relative movement is possible.
As a result, the attenuation coefficient c changes in response to rotating at least one of the pair of side plate members.

  In order to achieve the above object, the viscous mass damper that generates a reaction force corresponding to the linear motion displacement according to the present invention is provided with a linear motion provided with a male screw directed in the screw feed direction along the displacement direction of the linear motion displacement. A shaft, a rotating body provided with a female screw fitted to the male screw, a frame that rotatably supports the rotating body, and a viscous fluid sealed in a gap between the inner surface of the frame and the rotating body. The viscous fluid was taken in and out of the frame, and the amount enclosed could be adjusted.

According to the configuration of the present invention, the linear motion shaft is provided with a male screw having a screw feed direction directed along the displacement direction of the linear motion displacement. The rotating body is provided with a female screw that fits into the male screw. A frame rotatably supports the rotating body. A viscous fluid is enclosed in a gap between the inner surface of the frame and the rotating body. The amount of the sealed fluid can be adjusted by putting the viscous fluid in and out of the frame.
As a result, the damping coefficient c changes corresponding to the amount of viscous fluid sealed in the frame.

  Below, the viscous mass damper which concerns on embodiment of this invention is demonstrated. The present invention includes any of the embodiments described below, or a combination of two or more of them.

Further, the viscous mass damper according to the embodiment of the present invention includes a disk-shaped rotating member in which the rotating body rotates around a central axis corresponding to the linear motion of the linear motion shaft. A part is immersed in the viscous fluid.
With the configuration of the embodiment according to the present invention, the disk-like rotating member of the rotating body rotates around the central axis corresponding to the linear motion of the linear motion shaft. A part of the rotating member is immersed in the viscous fluid.
As a result, the damping coefficient c changes corresponding to the change in the area of the portion of the rotating member that is immersed in the viscous fluid.

  In order to achieve the above object, the viscous mass damper that generates a reaction force corresponding to the linear motion displacement according to the present invention is provided with a linear motion provided with a male screw directed in the screw feed direction along the displacement direction of the linear motion displacement. A shaft, a rotating body provided with a female screw fitted to the male screw, a frame that rotatably supports the rotating body, and a viscous fluid sealed in a gap between the inner surface of the frame and the rotating body. The rotating body includes a rotating member connected to a member provided with the female screw and an additional member that can be attached or detached.

According to the configuration of the present invention, the linear motion shaft is provided with a male screw having a screw feed direction directed along the displacement direction of the linear motion displacement. The rotating body is provided with a female screw that fits into the male screw. A frame rotatably supports the rotating body. A viscous fluid is enclosed in a gap between the inner surface of the frame and the rotating body. The rotating member includes a rotating member and an additional member, and the rotating member is connected to the member provided with the female screw. Additional members can be attached or removed.
As a result, the inertial mass mr changes in response to attachment or removal of the additional member.

  In order to achieve the above object, a viscous mass damper that generates a reaction force in response to a linear displacement according to the present invention is provided with a linear motion provided with a male screw directed in the screw feed direction along the displacement direction of the linear displacement. A shaft, a rotating body provided with a female screw fitted to the male screw, a frame that rotatably supports the rotating body, and a viscous fluid sealed in a gap between the inner surface of the frame and the rotating body. The rotating body is connected to the member provided with the female screw and is coaxial with the rotating shaft of the disk-shaped rotating member and the rotating shaft of the rotating member that rotate around the central axis corresponding to the linear motion of the linear motion shaft. It has the additional member which can be attached or removed.

According to the configuration of the present invention, the linear motion shaft is provided with a male screw having a screw feed direction directed along the displacement direction of the linear motion displacement. The rotating body is provided with a female screw that fits into the male screw. A frame rotatably supports the rotating body. A viscous fluid is enclosed in a gap between the inner surface of the frame and the rotating body. A disk-like rotating member of the rotating body is connected to the member provided with the female screw and rotates around a central axis corresponding to the linear motion of the linear motion shaft. The additional member of the rotating body is detachably attached on the same axis as the rotating shaft of the rotating member.
As a result, the inertial mass mr changes corresponding to attaching or removing the additional member to or from the rotating member.

  In order to achieve the above object, the viscous mass damper that generates a reaction force corresponding to the linear motion displacement according to the present invention is provided with a linear motion provided with a male screw directed in the screw feed direction along the displacement direction of the linear motion displacement. A shaft, a rotating body provided with a female screw fitted to the male screw, a frame that rotatably supports the rotating body, and a viscous fluid sealed in a gap between the inner surface of the frame and the rotating body. The rotary body is connected to the member provided with the female screw, and is movable in the radial direction of the disc-shaped rotary member that rotates about the central axis in response to the linear motion of the linear motion shaft and the rotational member. And a moving member to be attached.

According to the configuration of the present invention, the linear motion shaft is provided with a male screw having a screw feed direction directed along the displacement direction of the linear motion displacement. The rotating body is provided with a female screw that fits into the male screw. A frame rotatably supports the rotating body. A viscous fluid is enclosed in a gap between the inner surface of the frame and the rotating body. A disk-like rotating member of the rotating body is connected to the member provided with the female screw and rotates around a central axis corresponding to the linear motion of the linear motion shaft. The moving member of the rotating body is attached to be movable in the radial direction of the rotating member.
As a result, the inertial mass mr changes corresponding to the movement of the moving member in the radial direction of the rotating member.

In order to achieve the above object, a viscous mass damper with a spring that generates a reaction force corresponding to a linear motion displacement according to the present invention is provided with a male screw having a screw feed direction along the displacement direction of the linear motion displacement. A viscous mass having a linear moving shaft, a rotating body provided with a female screw fitted to the male screw, a frame that rotatably supports the rotating body, an inner surface of the frame, and a viscous fluid sealed in a gap between the rotating body A damper and an elastic member that generates an elastic reaction force corresponding to the linear displacement, wherein the viscous mass damper and the elastic member are connected in series, and the elastic member intersects the displacement direction of the linear displacement. And having an elastic beam that is fixed on one side and connected to the viscous mass damper on the other side,
The connection position of the elastic beam and the viscous mass damper can be changed along the longitudinal direction of the elastic beam.

With the above-described configuration of the present invention, the viscous mass damper includes the linear motion shaft, the rotating body, the frame, and the viscous fluid. The linear motion shaft is provided with a male screw having a screw feed direction directed along the displacement direction of the linear motion displacement. The rotating body is provided with a female screw that fits into the male screw. A frame rotatably supports the rotating body. A viscous fluid is enclosed in a gap between the inner surface of the frame and the rotating body. The elastic member generates an elastic reaction force corresponding to the linear displacement. The viscous mass damper and the elastic member are connected in series. The elastic member has an elastic beam extending so as to cross the direction of linear displacement and having one side fixed and the other side connected to the viscous mass damper. The connection position of the elastic beam and the viscous mass damper can be changed along the longitudinal direction of the elastic beam.
As a result, the elastic coefficient kb changes and the damper natural frequency ωr changes corresponding to changing the connecting position of the elastic beam and the viscous mass damper along the longitudinal direction of the elastic beam.

  In order to achieve the above object, a viscous mass damper with a spring that generates a reaction force corresponding to a linear motion displacement according to the present invention is provided with a male screw having a screw feed direction along the displacement direction of the linear motion displacement. A viscous mass having a rotating body provided with a linear motion shaft and a female screw fitted to the male screw, a frame that rotatably supports the rotating body, an inner surface of the frame, and a viscous fluid sealed in a gap between the rotating body A damper and an elastic member that generates an elastic reaction force corresponding to the linear displacement, wherein the viscous mass damper and the elastic member are connected in series, and the elastic member intersects the displacement direction of the linear displacement. A fixed leaf spring, which is a leaf spring in which one side is fixed and the other side is connected to the viscous mass damper, and the elastic beam is connected to the viscous mass damper. Mounting or With an additional leaf spring is a leaf spring which becomes detachable, and the things.

With the above-described configuration of the present invention, the viscous mass damper includes the linear motion shaft, the rotating body, the frame, and the viscous fluid. The linear motion shaft is provided with a male screw having a screw feed direction directed along the displacement direction of the linear motion displacement. The rotating body is provided with a female screw that fits into the male screw. A frame rotatably supports the rotating body. A viscous fluid is enclosed in a gap between the inner surface of the frame and the rotating body. The elastic member generates an elastic reaction force corresponding to the linear displacement. The viscous mass damper and the elastic member are connected in series. The elastic member has an elastic beam extending so as to intersect the direction of linear displacement and having one side fixed and the other side connected to the viscous mass damper. The elastic beam has a fixed leaf spring that is a leaf spring connected to the viscous mass damper, and an additional leaf spring that is a leaf spring that can be attached to or detached from the stationary leaf spring.
As a result, the elastic coefficient kb changes and the damper natural frequency ωr changes in response to the attachment or removal of the additional leaf spring to or from the fixed leaf spring.

  In order to achieve the above object, a viscous mass damper with a spring that generates a reaction force corresponding to a linear motion displacement according to the present invention is provided with a male screw having a screw feed direction along the displacement direction of the linear motion displacement. A viscous mass having a rotating body provided with a linear motion shaft and a female screw fitted to the male screw, a frame that rotatably supports the rotating body, an inner surface of the frame, and a viscous fluid sealed in a gap between the rotating body A damper and an elastic member that generates an elastic reaction force corresponding to the linear displacement, the viscous mass damper and the elastic member are connected in series, and the elastic member intersects the displacement direction of the linear displacement The plurality of laminated elastic plates overlapped in the direction, and the number of the laminated elastic plates can be changed.

With the above-described configuration of the present invention, the viscous mass damper includes the linear motion shaft, the rotating body, the frame, and the viscous fluid. The linear motion shaft is provided with a male screw having a screw feed direction directed along the displacement direction of the linear motion displacement. The rotating body is provided with a female screw that fits into the male screw. A frame rotatably supports the rotating body. A viscous fluid is enclosed in a gap between the inner surface of the frame and the rotating body. The elastic member generates an elastic reaction force corresponding to the linear displacement. The viscous mass damper and the elastic member are connected in series. The elastic member has a plurality of laminated elastic plates overlapped in a direction intersecting the direction of linear displacement. The number of laminated elastic plates can be changed.
As a result, the elastic coefficient kb changes and the damper natural frequency ωr changes in response to changing the number of layers of the plurality of laminated elastic plates.

  In order to achieve the above object, a viscous mass damper with a spring that generates a reaction force corresponding to a linear motion displacement according to the present invention is provided with a male screw having a screw feed direction along the displacement direction of the linear motion displacement. A viscous damper having a linear motion shaft, a rotating body provided with a female screw fitted to the male screw, a frame that rotatably supports the rotating body, an inner surface of the frame, and a viscous fluid sealed in a gap between the rotating body And an elastic member that generates an elastic reaction force corresponding to the linear motion displacement, the viscous damper and the elastic member are connected in series, and the elastic member intersects the direction of displacement of the linear motion displacement. The laminated elastic plate includes a laminated elastic plate main body having a laminated elastic plate, the laminated elastic plate having a through-hole penetrating in the thickness direction, and a laminated elastic plate piece that can be inserted into or removed from the through-hole. .

With the above-described configuration of the present invention, the viscous mass damper includes the linear motion shaft, the rotating body, the frame, and the viscous fluid. The linear motion shaft is provided with a male screw having a screw feed direction directed along the displacement direction of the linear motion displacement. The rotating body is provided with a female screw that fits into the male screw. A frame rotatably supports the rotating body. A viscous fluid is enclosed in a gap between the inner surface of the frame and the rotating body. The elastic member generates an elastic reaction force corresponding to the linear displacement. The viscous mass damper and the elastic member are connected in series. The elastic member has a plurality of laminated elastic plates overlapped in a direction intersecting the direction of linear displacement. The laminated elastic plate includes a laminated elastic plate main body formed with a through hole penetrating in the thickness direction, and a laminated elastic plate piece that can be inserted into or removed from the through hole.
As a result, the elastic coefficient kb changes and the damper natural frequency ωr changes in response to inserting or removing the laminated elastic plate piece into or from the through hole of the laminated elastic plate body.

  In order to achieve the above object, a viscous mass damper with a spring that generates a reaction force corresponding to a linear motion displacement according to the present invention is provided with a male screw having a screw feed direction along the displacement direction of the linear motion displacement. A viscous damper having a linear motion shaft, a rotating body provided with a female screw fitted to the male screw, a frame that rotatably supports the rotating body, an inner surface of the frame, and a viscous fluid sealed in a gap between the rotating body And an elastic member that generates an elastic reaction force corresponding to the linear motion displacement, the viscous damper and the elastic member are connected in series, and the elastic member intersects the direction of displacement of the linear motion displacement. The laminated elastic plate includes a laminated elastic plate member that overlaps in the direction along the plate surface, and at least a part of the laminated elastic plate member can be removed or attached. .

With the above-described configuration of the present invention, the viscous mass damper includes the linear motion shaft, the rotating body, the frame, and the viscous fluid. The linear motion shaft is provided with a male screw having a screw feed direction directed along the displacement direction of the linear motion displacement. The rotating body is provided with a female screw that fits into the male screw. A frame rotatably supports the rotating body. A viscous fluid is enclosed in a gap between the inner surface of the frame and the rotating body. The elastic member generates an elastic reaction force corresponding to the linear displacement. The viscous mass damper and the elastic member are connected in series. The elastic member has a plurality of laminated elastic plates overlapped in a direction intersecting the direction of linear displacement. The laminated elastic plate includes a laminated elastic plate member that overlaps in a direction along the plate surface. At least a part of the laminated elastic plate member can be removed or attached.
As a result, the elastic coefficient kb changes and the damper natural frequency ωr changes corresponding to the removal or attachment of at least a part of the laminated elastic plate member.

As described above, the viscous mass damper according to the present invention has the following effects due to its configuration.
A viscous mass damper consisting of a rotating body that has a linear motion shaft with a male screw and a female screw that fits into the male screw and is rotatably supported by the frame, and a viscous fluid sealed in the gap between the rotating body and the frame is a linear motion shaft. The apparent inertial mass mr, which is a value obtained by dividing the reaction force when the linear motion is linearly displaced at a predetermined relative acceleration by the relative acceleration of the linear motion displacement, and the linear motion shaft are linearly displaced at a constant relative speed. And a damping coefficient c corresponding to a value obtained by dividing the reaction force acting on the occasion by the relative speed.
Since the separation distance of at least a part of the gap between the inner surface of the frame and the rotating body can be changed, the attenuation coefficient c changes corresponding to the change in the separation distance.
In addition, a pair of disk-shaped side plate members sandwiches the disk-shaped side surfaces of the rotating member from both sides so that at least one of the pair of side plate members approaches or separates from the rotating member. Since the relative movement is performed, the attenuation coefficient c changes corresponding to the relative movement.
Further, when the pair of disk-shaped side plate members sandwich the rotating member from both sides, the screw type coupling member connects the pair of side plate members and twists the screw type coupling member, the pair of side plates Since the members are moved toward or away from each other and at least one of the pair of side plate members can be moved relative to or away from the rotating member, The attenuation coefficient c changes.
Further, the pair of disk-shaped side plate members of the frame sandwich the rotating member from both sides, the pair of side plate members are screw-coupled at each edge, and rotate at least one of the pair of side plate members. In this case, the pair of side plate members can move relative to each other so that the pair of side plate members approach or separate from each other and at least one of the pair of side plate members approaches or separates from the rotating member. The damping coefficient c changes in response to rotating at least one of the side plate members.
Further, since the viscous fluid is taken in and out of the frame so that the amount enclosed can be adjusted, the damping coefficient c changes in accordance with the amount of the viscous fluid enclosed in the frame.
Further, since a part of the rotating member is immersed in the viscous fluid, the damping coefficient c changes corresponding to a change in the area of a part of the rotating member immersed in the viscous fluid.
Further, since the rotating body has a rotating member and an additional member, and the rotating member is connected to the female screw so that the additional member can be attached or removed, it corresponds to attaching or removing the additional member. The inertial mass mr changes.
The rotating body includes a disk-shaped rotating member and an additional member, the rotating member rotates around a central axis corresponding to the linear motion of the linear motion shaft, and the rotational member rotates the female screw. Since the additional member is connected to the provided member and can be attached or detached on the same axis as the rotating member, the inertial mass mr changes corresponding to the attachment or removal of the additional member to or from the rotating member. To do.
Further, the rotating body has a disk-shaped rotating member and a moving member, the rotating member rotates around the central axis corresponding to the linear motion of the linear motion shaft, and the rotational member rotates the female screw. Since the moving member is attached to the provided member so as to be movable in the radial direction of the rotating member, the inertial mass mr corresponds to the movement of the moving member in the radial direction of the rotating member. Change.

As explained above, the viscous mass damper with a spring according to the present invention has the following effects due to its configuration.
An elastic coefficient kb which is a value obtained by dividing a reaction force generated when the spring-equipped viscous mass damper displaces the spring element by a relative distance in the linear motion direction, and the linear motion shaft of the viscous mass damper. The damper natural frequency ωr corresponding to the apparent inertial mass mr, which is a value obtained by dividing the reaction force acting in the linear motion direction by the relative acceleration when the linear motion is linearly moved in the linear motion direction at a predetermined relative acceleration, A damping coefficient c corresponding to a value obtained by dividing the reaction force acting in the linear motion direction by the relative velocity when the linear motion shaft of the viscous mass damper is linearly moved at a constant relative velocity.
The elastic member has an elastic beam that extends in the direction of displacement of the linear displacement and is fixed on one side and connected to the viscous mass damper on the other side, and the connecting position of the elastic beam and the viscous mass damper The elastic modulus can be changed along the longitudinal direction of the elastic beam, so that the coupling position of the elastic beam and the viscous mass damper is changed along the longitudinal direction of the elastic beam. As kb changes, the damper natural frequency ωr changes.
In addition, the elastic member has an elastic beam that extends in the direction of displacement of the linear displacement and is fixed on one side and connected on the other side to the viscous mass damper, and the elastic beam is connected to the viscous mass damper. Since the fixed plate spring that is a fixed plate spring and the additional plate spring that is a plate spring that can be attached to or detached from the fixed plate spring are provided, the additional plate spring is attached to or removed from the fixed plate spring. In response to this, the elastic coefficient kb changes and the damper natural frequency ωr changes.
In addition, since the elastic member has a plurality of laminated elastic plates overlapped in a direction intersecting the displacement direction of the linear displacement, the number of the laminated elastic plates can be changed. Corresponding to changing the number of laminated elastic plates, the elastic coefficient kb changes and the damper natural frequency ωr changes.
In addition, since the laminated elastic plate includes a laminated elastic plate main body formed with a through hole penetrating in the plate thickness direction and a laminated elastic plate piece that can be inserted into or removed from the through hole, the laminated elastic plate piece is The elastic coefficient kb changes and the damper natural frequency ωr changes in response to insertion or extraction from the through hole of the laminated elastic plate body.
The laminated elastic plate includes a laminated elastic plate member that overlaps in a direction along the plate surface, and at least a part of the laminated elastic plate member can be removed or attached. Corresponding to a part being removed or attached, the elastic modulus kb changes and the damper natural frequency ωr changes.
Therefore, it is possible to provide a viscous mass damper that can adjust dynamic characteristics or vibration characteristics with a simple structure and a viscous mass damper with a spring.

The best mode for carrying out the present invention will be described below with reference to the drawings.
For convenience of explanation, a case where a viscous mass damper with a spring is attached to the target structure will be described as an example.

First, a viscous mass damper with a spring according to a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a model diagram of a vibration system according to an embodiment of the present invention. FIG. 2 is a conceptual diagram of a viscous mass damper with a spring according to the first embodiment of the present invention.

The viscous mass damper with a spring is a mechanical element that generates a reaction force corresponding to a linear displacement, and is configured by connecting the viscous mass damper 100 and the elastic member 200 in series.
The viscous mass damper 100 is a mechanical element that generates a reaction force corresponding to a linear motion displacement, and includes a linear motion shaft 110, a rotating body 120, a frame 130, and a viscous fluid 140.
The viscous damper according to the present application changes the physical characteristics related to the vibration phenomenon by changing at least one of the rotational inertia performance factor of the rotating body 120 or the viscosity coefficient caused by the viscous fluid 140.
The spring-equipped viscous mass damper according to the present application changes the natural frequency by changing at least one of the rotational inertia ratio of the rotating body 120 or the elastic coefficient caused by the elastic member 200.
For example, the viscous mass damper with a spring is connected to the target structure 30 using the connecting member 150.
The target structure 30 is a structure that is seismically isolated or damped by a viscous mass damper with a spring.
For seismic isolation, the target structure 30 is provided with a viscous mass damper with a spring at the base portion.
For vibration suppression, the target structure 30 is provided with a spring-attached viscous mass damper between the main structural members of the structure.

The linear motion shaft 110 is a member provided with a male screw directed in the screw feed direction along the displacement direction of the linear motion displacement.
For example, the linear motion shaft 110 includes a male screw member 111 and a longitudinal member 112.
FIG. 2 shows a male screw member 111 having a male screw formed on the outer periphery and a longitudinal member integrally connected to the male screw member.

The rotating body 120 is a member provided with a female screw that fits into the male screw.
The rotating body 120 includes a disk-shaped rotating member 122 provided with a female screw that fits into the male screw.
For example, the rotating body 120 includes a female screw member 121, a disk-shaped rotating member 122, and a rotating shaft 126.
The female screw member 121 is a member provided with a female screw.
The disc-shaped rotating member 122 rotates around the central axis corresponding to the linear motion of the linear motion shaft 110.
The female screw member 121 and the disc-shaped rotating member 122 are arranged coaxially.
The rotating shaft 126 is a member that connects the female screw member 121 and the disk-shaped rotating member 122.
FIG. 2 shows a rotating body 120 that includes a female screw member 121 provided with a female screw, a rotating member 122, and a rotating shaft 126, and the rotating shaft 126 supports the rotating member 122.
The male screw of the male screw member 111 and the female screw of the female screw member 121 may be combined in a screw shape via a plurality of balls.
When the linear motion shaft 110 is constrained to rotate and linearly moves, the female screw member 121 is rotated via the ball, and the rotary member 122 and the rotary shaft 126 that are coaxially fixed to the female screw member 121 rotate.

The frame 130 is a structure that rotatably supports the rotating body 120.
The frame 130 may be configured such that the separation distance of at least a part of the gap between the inner surface of the frame and the rotating body can be changed.
For example, the frame 130 includes a pair of side plate members 131 and 132, a screw type coupling member 133, and a bearing 135.
The pair of side plate members 131 and 132 are a pair of disk-shaped members that sandwich the rotating member 122 from both sides.
The screw-type coupling member 133 is a screw machine element that couples the pair of side plate members 131 and 132 by a screw structure.
When the screw-type coupling member 133 is twisted, the pair of side plate members 131 and 132 approach or separate from each other, and at least one of the pair of side plate members 131 and 132 approaches or separates from the rotating member 122. Can move relative to
For example, a plurality of screw type coupling members 133 are arranged on the outer periphery of the pair of side plate members 131 and 132.
The pair of side plate members 131 and 132 are a first side plate member 131 and a second side plate member 132.
For example, the screw-type coupling member 133 is coupled to the first side plate member 131 with a forward screw and is coupled to the second side plate member 132 with a reverse screw. In this way, when the plurality of screw-type coupling members 133 are simultaneously rotated in one rotation direction, at least one of the first side plate member 131 and the second side plate member 132 approaches the rotation member 122. When the plurality of screw type coupling members 133 are simultaneously rotated in the other rotation direction, at least one of the first side plate member 131 and the second side plate member 132 is separated from the rotation member 122.
The bearing 135 is a mechanical element that rotatably supports the rotating body 120.

The viscous fluid 140 is a liquid sealed in a gap between the inner surface of the frame and the rotating body.
When the rotating body 120 rotates relative to the frame 130, the viscous fluid 140 applies a viscous force in the direction opposite to the rotation direction to the rotating body.
Corresponding to the distance between the frame 130 and the rotating body 120, the viscous force changes.
For example, when at least one of the pair of side plate members 131 and 132 approaches the rotating member 122, the viscous force increases. When at least one of the pair of side plate members 131 and 132 is separated from the rotating member 122, the viscous force is reduced.
The viscous force gives a rotational torque reaction force to the rotating body 140.
The rotational torque reaction force is converted into a reaction force acting in the direction of linear displacement by the action of the male screw and the female screw.
This reaction force is approximately proportional to the speed of the linear displacement of the linear motion shaft.

The connecting member 150 is a member for connecting the spring-attached viscous mass damper to the target structure.
The connecting member 150 includes a first connecting member 151 and a second connecting member 152.
The first connecting member 151 is a connecting member that can swing around one movable shaft that intersects the direction of linear displacement.
The first connecting member 151 connects the target structure 30 and the frame 130.
The second connecting member 152 is a connecting member that can swing around one movable shaft that intersects the direction of linear displacement.
The second connecting member 152 connects the linear motion shaft 110 and the elastic member 200.

The elastic member 200 is a member that generates an elastic reaction force corresponding to the linear displacement.
The elastic member 200 includes an elastic plate 211, a first flange 212, and a second flange 213.
The elastic plate 211 is a plate material made of an elastic material.
The elastic plate 211 is sandwiched between the first flange 212 and the second flange 213 with the plate surface along the direction of linear displacement.
When the first flange 212 and the second flange 213 approach and separate in the direction of linear displacement, a shearing force is generated in the elastic plate 211, and a relative reaction force between the first flange 212 and the second flange 213 is generated. This reaction force is approximately proportional to the relative displacement between the first flange 212 and the second flange 213.
The first flange 212 is coupled to the second connecting member 152.
The second flange 213 is coupled to the target structure 30.

Below, the motion characteristic and vibration characteristic of a viscous mass damper with a spring are demonstrated based on figures.
FIG. 1 is a model diagram of a vibration system according to an embodiment of the present invention.
FIG. 1 shows a system (corresponding to a “viscous mass damper”) in which the inertia connecting element 11 and the damper element 12 are connected in parallel and a system in which the spring element 20 is directly connected (corresponding to a “viscous mass damper with spring”). .) Shows a model connected to the target structure.
The target structure 30 is modeled by a main mass 31 and a main elastic element 32.

The viscous mass damper system 10 has an apparent inertial mass that is a value obtained by dividing the reaction force acting when the linear motion shaft is linearly displaced at a predetermined relative acceleration by the inertia connecting element 11 by the relative acceleration of the linear motion displacement. Has mr.
The viscous mass damper has a damping coefficient c corresponding to a value obtained by dividing the reaction force acting when the linear movement shaft is linearly displaced at a constant relative speed by the damper element 12 by the relative speed.

The viscous mass damper with a spring has a modulus of elasticity kb, which is a value obtained by dividing the reaction force generated when the spring element 20 is displaced by a relative distance in the linear motion direction, and the linear motion axis of the viscous mass damper in the linear motion direction. And a damper natural frequency ωr corresponding to an apparent inertial mass mr, which is a value obtained by dividing the reaction force acting in the linear motion direction by the relative acceleration.
Further, the viscous mass damper with a spring has a damping coefficient c corresponding to a value obtained by dividing the reaction force acting in the linear motion direction by the relative velocity when the linear motion shaft of the viscous mass damper is linearly moved at a constant relative velocity. .

  Corresponding to the fact that the separation distance of at least a part of the gap between the inner surface of the frame and the rotating body can be changed, the attenuation coefficient c changes.

Next, the viscous mass damper with a spring according to the second embodiment of the present invention will be described based on the drawings. FIG. 3 is a conceptual diagram of the viscous mass damper with a spring according to the second embodiment of the present invention. is there.

The viscous mass damper with a spring is a mechanical element that generates a reaction force corresponding to a linear displacement, and is configured by connecting the viscous mass damper 100 and the elastic member 200 in series.
The viscous mass damper 100 is a mechanical element that generates a reaction force corresponding to a linear motion displacement, and includes a linear motion shaft 110, a rotating body 120, a frame 130, and a viscous fluid 140.
Hereinafter, description of the same structure as the viscous mass damper with a spring concerning 1st embodiment is abbreviate | omitted, and only a different location is demonstrated.

  The structures of the linear motion shaft 110, the rotating body 120, and the viscous fluid 140 are the same as those of the viscous mass damper with a spring according to the first embodiment.

The frame 130 is a structure that rotatably supports the rotating body 120.
The frame 130 may be configured such that the separation distance of at least a part of the gap between the inner surface of the frame and the rotating body can be changed.
For example, the frame 130 includes a pair of side plate members 131 and 132 and a bearing 135.
The pair of side plate members 131 and 132 are a pair of disk-shaped members that sandwich the rotating member 122 from both sides.
When the pair of side plate members 131 and 132 are screw-coupled by the screw portions 134 disposed on the edges of each other and at least one of the pair of side plate members 131 and 132 is rotated, the pair of side plate members 131 and 132 are mutually connected. The at least one of the pair of side plate members 131 and 132 can move relative to each other so as to approach or separate from the rotating member 122.
For example, when the second side plate member 132 is rotated in one rotation direction, at least one of the pair of side plate members 131 and 132 approaches the rotation member 122. When the second side plate member 132 is rotated in the other rotation direction, at least one of the pair of side plate members 131 and 132 is separated from the rotation member 122.
The bearing 135 is a mechanical element that rotatably supports the rotating body 120.

  Corresponding to the fact that the separation distance of at least a part of the gap between the inner surface of the frame and the rotating body can be changed, the attenuation coefficient c changes.

Next, a viscous mass damper with a spring according to a third embodiment of the present invention will be described based on the drawings. FIG. 4 is a conceptual diagram of the viscous mass damper with a spring according to the third embodiment of the present invention. is there.

The viscous mass damper with a spring is a mechanical element that generates a reaction force corresponding to a linear displacement, and is configured by connecting the viscous mass damper 100 and the elastic member 200 in series.
The viscous mass damper 100 is a mechanical element that generates a reaction force corresponding to a linear motion displacement, and includes a linear motion shaft 110, a rotating body 120, a frame 130, and a viscous fluid 140.
Hereinafter, description of the same structure as the viscous mass damper with a spring concerning 1st embodiment is abbreviate | omitted, and only a different location is demonstrated.

  The structures of the linear motion shaft 110, the rotating body 120, and the viscous fluid 140 are the same as those of the viscous mass damper with a spring according to the first embodiment.

The frame 130 is a structure that rotatably supports the rotating body 120.
The frame 130 may allow the viscous fluid to be taken into and out of the frame and the amount enclosed can be adjusted.
Also,
A part of the rotating member may be immersed in the enclosed viscous fluid.
In this way, when the amount of the viscous fluid enclosed changes, the area of the portion of the rotating member immersed in the viscous fluid changes, and the viscous resistance force received by the rotating member when the rotating member 120 rotates is Change.
For example, the frame 130 includes a pair of side plate members 131 and 132, a bearing 135, a frame lid 136, a viscous fluid input pipe 137, and a viscous fluid discharge pipe 138.
The pair of side plate members 131 and 132 are a pair of disk-shaped members that sandwich the rotating member 122 from both sides.
The pair of side plate members 131 and 132 are seamlessly connected to each other so that viscous fluid can be enclosed.
The bearing 135 is a mechanical element that rotatably supports the rotating body 120.
The frame lid 136 is a lid that is attached to the frame and can be opened and closed.
The viscous fluid input pipe 137 is a pipe that can input the viscous fluid 140 into the frame 130.
The viscous fluid discharge pipe 138 is a pipe that can discharge the viscous fluid 140 from the frame 130.
The amount of the viscous fluid 140 enclosed in the frame 130 can be adjusted by charging the viscous fluid 140 into the frame 130 from the viscous fluid input tube 137 and discharging it from the viscous fluid discharge tube 138.
Corresponding to adjusting the amount of the viscous fluid enclosed, the viscous force changes.

The connecting member 150 is a member for connecting the spring-attached viscous mass damper to the target structure.
The connecting member 150 includes a third connecting member 153 and a second connecting member 152.
The third connecting member 153 is a flange-shaped connecting member.
The third connecting member 153 connects the target structure 30 and the frame 130.
The second connecting member 152 is a connecting member that can swing around one movable shaft that intersects the direction of linear displacement.
The second connecting member 152 connects the linear motion shaft 110 and the elastic member 200.

  Corresponding to the amount of the viscous fluid 140 enclosed in the frame 130 being changed, the damping coefficient c changes.

Next, a viscous mass damper with a spring according to a fourth embodiment of the present invention will be described based on the drawings. FIG. 5 is a conceptual diagram of the viscous mass damper with a spring according to the fourth embodiment of the present invention. is there.

The viscous mass damper with a spring is a mechanical element that generates a reaction force corresponding to a linear displacement, and is configured by connecting the viscous mass damper 100 and the elastic member 200 in series.
The viscous mass damper 100 is a mechanical element that generates a reaction force corresponding to a linear motion displacement, and includes a linear motion shaft 110, a rotating body 120, a frame 130, and a viscous fluid 140.
Hereinafter, the description of the same configuration as that of the viscous mass damper with a spring according to the third embodiment is omitted, and only different portions will be described.

  The structures of the linear motion shaft 110, the frame 130, and the viscous fluid 140 are the same as those of the viscous mass damper with a spring according to the third embodiment.

The rotating body 120 is a member provided with a female screw that fits into the male screw.
The rotating body 120 may be provided with a female screw that fits into the male screw, and may include a disk-shaped rotating member 122.
For example, the rotating body 120 includes a female screw member 121, a disk-shaped rotating member 122, an additional member 123, and a rotating shaft 126.
The female screw member 121 is a member provided with a female screw.
The disc-shaped rotating member 122 rotates around the central axis corresponding to the linear motion of the linear motion shaft 110.
The rotating shaft 126 is a member that connects the disk-shaped rotating member 122 and the female screw member 121.
The additional member 123 is a member that can be attached or removed.
For example, the additional member 123 is a member that can be attached to or detached from the rotating member 122.
The additional member 123 may be a member that is detachably attached on the same axis as the rotation axis of the rotation member.
For example, the additional member 123 is a member on a disk that is detachably attached on the same axis as the rotation axis of the rotation member.
When the additional member 123 is attached to the rotating body, the rotational inertia moment of the rotating body 120 increases as compared with the case where only the rotating member 122 is provided.
As a result, a larger rotational torque is required to rotate the rotating body against the viscous resistance force of the viscous fluid.
The rotational torque is converted into a reaction force in the direction of linear displacement by the action of the male screw and the female screw.

  Corresponding to attachment or removal of the additional member, the apparent inertial mass mr and the damper natural frequency ωr change.

Next, a viscous mass damper with a spring according to a fifth embodiment of the present invention will be described based on the drawings. FIG. 6 is a conceptual diagram of a viscous mass damper with a spring according to the fifth embodiment of the present invention. is there.

The viscous mass damper with a spring is a mechanical element that generates a reaction force corresponding to a linear displacement, and is configured by connecting the viscous mass damper 100 and the elastic member 200 in series.
The viscous mass damper 100 is a mechanical element that generates a reaction force corresponding to a linear motion displacement, and includes a linear motion shaft 110, a rotating body 120, a frame 130, and a viscous fluid 140.
Hereinafter, the description of the same configuration as that of the viscous mass damper with a spring according to the third embodiment is omitted, and only different portions will be described.

  The structures of the linear motion shaft 110, the frame 130, and the viscous fluid 140 are the same as those of the viscous mass damper with a spring according to the third embodiment.

The rotating body 120 is a member provided with a female screw that fits into the male screw.
The rotating body 120 may be provided with a female screw that fits into the male screw, and may include a disk-shaped rotating member 122.
For example, the rotating body 120 includes a female screw member 121, a disk-shaped rotating member 122, a moving member 124, a guide member 125, and a rotating shaft 126.
The female screw member 121 is a member provided with a female screw.
The disc-shaped rotating member 122 rotates around the central axis corresponding to the linear motion of the linear motion shaft 110.
The rotating shaft 126 is a member that connects the disk-shaped rotating member 122 and the female screw member 121.
The moving member 124 is a member attached so as to be movable in the radial direction of the rotating member 122.
The moving member 124 is a member attached to the rotating member 122 so as to be movable in the radial direction of the rotating member 122.
The guide member 125 is a member that guides the moving member 124 in the radial direction of the rotating member 122.
For example, the guide member 125 is a straight rail that extends radially on the side surface of the rotating member 122.
For example, the moving member 124 is guided by the guide member 125 and can be fixed at a predetermined location.
When the moving member 124 is moved in the radial direction, the rotational inertia moment of the rotating body 120 changes.
When the rotational moment of inertia increases, a larger rotational torque is required to rotate the rotating body.
The rotational torque is converted into a reaction force in the direction of linear displacement by the action of the male screw and the female screw.

  Corresponding to the movement of the moving member 124 in the radial direction, the apparent inertial mass mr and the damper natural frequency ωr change.

Next, a viscous mass damper with a spring according to the sixth embodiment of the present invention will be described based on the drawings. FIG. 7 is a conceptual diagram of the viscous mass damper with a spring according to the sixth embodiment of the present invention. is there.

The viscous mass damper with a spring is a mechanical element that generates a reaction force corresponding to a linear displacement, and is configured by connecting the viscous mass damper 100 and the elastic member 200 in series.
The viscous mass damper 100 is a mechanical element that generates a reaction force corresponding to a linear motion displacement, and includes a linear motion shaft 110, a rotating body 120, a frame 130, and a viscous fluid 140.
Hereinafter, description of the same structure as the viscous mass damper with a spring concerning 1st embodiment is abbreviate | omitted, and only a different location is demonstrated.

  The structures of the linear motion shaft 110, the frame 130, and the viscous fluid 140 are the same as those of the viscous mass damper with a spring according to the third embodiment.

The rotating body 120 is a member provided with a female screw that fits into the male screw.
The rotating body 120 may include a female screw member 121, a disk-shaped rotating member 122, an additional member 123, and a rotating shaft 126.
The female screw member 121 is a member provided with a female screw.
The disc-shaped rotating member 122 rotates around the central axis corresponding to the linear motion of the linear motion shaft 110.
The rotating shaft 126 is a member that connects the disk-shaped rotating member 122 and the female screw member 121.
The additional member 123 is a member that can be attached or removed.
The rotating shaft 126 protrudes from the frame 20.
The additional member 123 is detachably attached to the protruding end of the rotating shaft 126.
For example, the additional member 123 is a member that can be attached to or detached from the rotating member 122.
The additional member 123 may be a member that is coaxially detachably attached to the rotating shaft of the rotating member.
For example, the additional member 123 is a member on a disk that is detachably attached on the same axis as the rotation axis of the rotation member.
The additional member 123 may be a member in which a plurality of members are overlapped and the number of members can be adjusted.
The additional member 123 may include a member that is fixed to be movable in the radial direction.
When the additional member 123 is attached to the rotating body, the rotational inertia moment of the rotating body 120 increases as compared with the case where only the rotating member 122 is provided.
As a result, a larger rotational torque is required to rotate the rotating body.
The rotational torque is converted into a reaction force in the direction of linear displacement by the action of the male screw and the female screw.

  Corresponding to attachment or removal of the additional member, the apparent inertial mass mr and the damper natural frequency ωr change.

Next, the viscous mass damper with a spring according to the seventh embodiment of the present invention will be described based on the drawings. FIG. 8 is a conceptual diagram of the viscous mass damper with a spring according to the seventh embodiment of the present invention. is there.
FIG. 10 is a structural diagram of a viscous mass damper with a spring according to seventh, eighth, and ninth embodiments of the present invention.

The viscous mass damper with a spring is a mechanical element that generates a reaction force corresponding to a linear displacement, and is configured by connecting the viscous mass damper 100 and the elastic member 200 in series.
The viscous mass damper 100 is a mechanical element that generates a reaction force corresponding to a linear motion displacement, and includes a linear motion shaft 110, a rotating body 120, a frame 130, and a viscous fluid 140.
For example, the viscous mass damper with a spring is connected to the target structure 30 using the connecting member 150.
The target structure 30 is a structure that is seismically isolated or damped by a viscous mass damper with a spring.
For seismic isolation, the target structure 30 is provided with a viscous mass damper with a spring at the base portion.
For damping, the target structure 30 is provided with a spring-attached viscous mass damper inside the structure.

The linear motion shaft 110 is a member provided with a male screw directed in the screw feed direction along the displacement direction of the linear motion displacement.
For example, the linear motion shaft 110 includes a male screw member 111 and a longitudinal member 112.
FIG. 10 shows a male screw member 111 having a male screw formed on the outer periphery and a longitudinal member 112 integrally connected to the male screw member.

The rotating body 120 is a member provided with a female screw that fits into the male screw.
The rotating body 120 may include a female screw member 121 and a cylindrical rotating member 122.
The female screw member 121 is a member provided with a female screw.
The cylindrical rotating member 122 rotates around the central axis corresponding to the linear motion of the linear motion shaft 110.
The female screw member 121 and the cylindrical rotating member 127 are arranged coaxially and are fixed to each other.
FIG. 10 shows a rotating body 120 including a female screw member 121 provided with a female screw and a cylindrical rotating member 127.
The male screw of the male screw member 111 and the female screw of the female screw member 121 may be combined in a screw shape via a plurality of balls.
When the linear movement shaft 110 is constrained to rotate and linearly moves, the female screw member 121 is rotated via the ball, and the rotary member 127 that is coaxially fixed to the female screw member 121 rotates.

The frame 130 is a structure that rotatably supports the rotating body 120.
For example, the frame 130 is a cylindrical structure that covers the rotating body.
The bearing 135 is a mechanical element that rotatably supports the rotating body 120.

The viscous fluid 140 is a liquid sealed in a gap between the inner surface of the frame and the rotating body.
When the rotating body 120 rotates relative to the frame 130, the viscous fluid 140 applies a viscous force in the direction opposite to the rotation direction to the rotating body.
The viscous force gives a rotational torque to the rotating body.
The rotational torque becomes a reaction force in the direction of linear displacement due to the action of the male screw and the female screw.
This reaction force is approximately proportional to the speed of the linear displacement of the linear motion shaft.

The connecting member 150 is a member for connecting the spring-attached viscous mass damper to the target structure.
The connecting member 150 includes a first connecting member 151, a second connecting member 152, and a fourth connecting member 154.
The first connecting member 151 is a connecting member that can swing around one movable shaft that intersects the direction of linear displacement.
The first connecting member 151 connects the fourth connecting member 154 and the frame 130.
The second connecting member 152 is a connecting member that can swing around one movable shaft that intersects the direction of linear displacement.
The second connecting member 152 connects the linear motion shaft 110 and the elastic member 200.

The elastic member 200 is a member that generates an elastic reaction force corresponding to the linear displacement.
The elastic member 200 has an elastic beam 220 that extends across the displacement direction of the linear displacement and is fixed on one side and connected to the viscous mass damper on the other side.
The connection position of the elastic beam 220 and the viscous mass damper may be changeable along the longitudinal direction of the elastic beam.
For example, the elastic member 200 includes an elastic beam 220, a first guide member 222, and a second guide member 223.
For example, the first guide member 222 is a linear guide provided on the elastic beam 220 along the longitudinal direction.
For example, the first guide member 222 is a member fixed to the elastic beam 220 and provided with a long slot along the longitudinal direction.
The second guide member 223 is a member that is guided by the first guide member 222 and is movably fixed in the longitudinal direction of the elastic beam 220.
When the first guide member 222 is moved along the second guide member 223, the connecting position of the elastic beam 220 and the viscous mass damper can be changed along the longitudinal direction of the elastic beam.

The fourth connecting member 154 is a member that couples the first connecting member 151 and the target structure 30.
The fourth connecting member 154 has the same structure as the first guide member 222 and the second guide member 223.
Therefore, the connecting position of the elastic beam and the viscous mass damper can be changed in parallel along the longitudinal direction of the elastic beam.

Below, the motion characteristic and vibration characteristic of a viscous mass damper with a spring are demonstrated based on figures.
FIG. 1 is a model diagram of a vibration system according to an embodiment of the present invention.

The viscous mass damper 10 has an apparent inertial mass mr which is a value obtained by dividing the reaction force acting when the linear motion shaft is linearly displaced at a predetermined relative acceleration by the relative acceleration of the linear motion displacement.
The viscous mass damper has a damping coefficient c corresponding to a value obtained by dividing the reaction force acting when the linear motion shaft is linearly displaced at a constant relative speed by the relative speed.

The viscous mass damper with a spring has an elastic coefficient kb, which is a value obtained by dividing the reaction force generated when the spring element is displaced by a relative distance in the linear motion direction, and the linear motion axis of the viscous mass damper in the linear motion direction. It has a damper natural frequency ωr corresponding to an apparent inertial mass mr, which is a value obtained by dividing the reaction force acting in the linear motion direction by the relative acceleration when the linear motion is performed at a predetermined relative acceleration.
Further, the viscous mass damper with a spring has a damping coefficient c corresponding to a value obtained by dividing the reaction force acting in the linear motion direction by the relative velocity when the linear motion shaft of the viscous mass damper is linearly moved at a constant relative velocity. Have.

  Corresponding to changing the connecting position of the elastic beam and the viscous mass damper along the longitudinal direction of the elastic beam, the elastic coefficient kb and the damper natural frequency ωr change.

Next, the viscous mass damper with spring according to the eighth embodiment of the present invention will be described based on the drawings. FIG. 9 is a conceptual diagram of the viscous mass damper with spring according to the eighth embodiment of the present invention. is there.
FIG. 10 is a structural diagram of a viscous mass damper with a spring according to seventh, eighth, and ninth embodiments of the present invention.
The viscous mass damper with a spring is a mechanical element that generates a reaction force corresponding to a linear displacement, and is configured by connecting the viscous mass damper 100 and the elastic member 200 in series.
The viscous mass damper 100 is a mechanical element that generates a reaction force corresponding to a linear motion displacement, and includes a linear motion shaft 110, a rotating body 120, a frame 130, and a viscous fluid 140.
Hereinafter, the description of the same configuration as that of the viscous mass damper with a spring according to the seventh embodiment is omitted, and only different portions will be described.

  The structure of the viscous mass damper is the same as that of the viscous mass damper with a spring according to the seventh embodiment.

The elastic member 200 is a member that generates an elastic reaction force corresponding to the linear displacement.
The elastic member 200 has an elastic beam 220 that extends across the displacement direction of the linear displacement and is fixed on one side and connected to the viscous mass damper on the other side.
The elastic beam 220 may have a fixed leaf spring 221 and an additional leaf spring 224.
The fixed leaf spring 221 is a leaf spring connected to a viscous mass damper.
The additional leaf spring 224 is a leaf spring that can be attached to or detached from the stationary leaf spring 221.
For example, a plurality of additional leaf springs 224 are screwed to the stationary leaf spring 221.
When some of the plurality of additional leaf springs 224 are removed or removed, the elastic force of the elastic beam 220 can be changed.
When the additional leaf spring 224 is replaced with an additional leaf spring 224 having a different thickness, the elastic force of the elastic beam 220 can be changed.

  The elastic coefficient kb and the damper natural frequency ωr change corresponding to the attachment and removal of the additional leaf spring 224.

Next, the viscous mass damper with a spring according to the ninth embodiment of the present invention will be described based on the drawings. FIG. 11 is a partial conceptual diagram of the viscous mass damper with a spring according to the ninth embodiment of the present invention. It is.
FIG. 10 is a structural diagram of a viscous mass damper with a spring according to seventh, eighth, and ninth embodiments of the present invention.
The viscous mass damper with a spring is a mechanical element that generates a reaction force corresponding to a linear displacement, and is configured by connecting the viscous mass damper 100 and the elastic member 200 in series.
The viscous mass damper 100 is a mechanical element that generates a reaction force corresponding to a linear motion displacement, and includes a linear motion shaft 110, a rotating body 120, a frame 130, and a viscous fluid 140.
Hereinafter, the description of the same configuration as that of the viscous mass damper with a spring according to the seventh embodiment is omitted, and only different portions will be described.

  The structure of the viscous mass damper is the same as that of the viscous mass damper with a spring according to the seventh embodiment.

The elastic member 200 is a member that generates an elastic reaction force corresponding to the linear displacement.
The elastic member has a plurality of laminated elastic plates overlapped in the direction intersecting the displacement direction of the linear displacement,
It may be possible to change the number of laminated elastic plates.
The elastic member 200 includes a laminated elastic plate 214, a first flange 212, and a second flange 213.
The laminated elastic plate 214 is a plurality of laminated elastic material plates.
The laminated elastic plate 214 is sandwiched between the first flange 212 and the second flange 213 with the plate surface along the direction of linear displacement.
When the first flange 212 and the second flange 213 approach and separate in the direction of linear displacement, a shearing force is generated in the elastic plate 211, and a relative reaction force between the first flange 212 and the second flange 213 is generated. This reaction force is approximately proportional to the relative displacement between the first flange 212 and the second flange 213.
The first flange 212 is coupled to the second connecting member 152.
The second flange 213 is coupled to the target structure 30.

If the number of laminated elastic materials is changed, the elastic coefficient of the elastic member 200 can be changed.
When the thickness made of the elastic material is changed, the elastic coefficient of the elastic member 200 can be changed.

  The elastic coefficient kb and the damper natural frequency ωr change in response to changing the number of laminated elastic materials or changing the thickness of the elastic material.

Next, the viscous mass damper with a spring according to the tenth embodiment of the present invention will be described based on the drawings. FIG. 12 is a conceptual diagram of the viscous mass damper with a spring according to the tenth embodiment of the present invention. is there.
FIG. 15 is an AA arrow view of a viscous mass damper with a spring according to the tenth embodiment of the present invention.

The viscous mass damper with a spring is a mechanical element that generates a reaction force corresponding to a linear displacement, and is configured by connecting the viscous mass damper 100 and the elastic member 200 in series.
The viscous mass damper 100 is a mechanical element that generates a reaction force corresponding to a linear motion displacement, and includes a linear motion shaft 110, a rotating body 120, a frame 130, and a viscous fluid 140.
Hereinafter, description of the same structure as the viscous mass damper with a spring concerning 1st embodiment is abbreviate | omitted, and only a different location is demonstrated.

  The structure of the linear motion shaft 110 and the viscous fluid 140 is the same as that of the viscous mass damper with a spring according to the first embodiment.

The rotating body 120 is a member provided with a female screw that fits into the male screw.
The rotating body 120 includes a disk-shaped rotating member 122 provided with a female screw that fits into the male screw.
For example, the rotating body 120 includes a female screw member 121, a disk-shaped rotating member 122, a rotating shaft 126, and a moving member 128.
The female screw member 121 is a member provided with a female screw.
The disc-shaped rotating member 122 rotates around the central axis corresponding to the linear motion of the linear motion shaft 110.
The female screw member 121 and the disc-shaped rotating member 122 are arranged coaxially.
The rotating shaft 126 is a member that connects the female screw member 121 and the disk-shaped rotating member 122.
The moving member 128 is a member attached so as to be movable in the radial direction of the rotating member 122.
FIG. 12 shows a rotating body 120 having a female screw member 121 provided with a female screw, a rotating member 122, a rotating shaft 126, and a moving member 128, and the rotating shaft 126 supports the rotating member 122.
FIG. 15 shows a state in which the rotating member 122 is provided with a plurality of fan-shaped grooves on the circumference, and the moving member 128 having a plurality of fan-shaped surfaces is fitted into the grooves.
The moving member 128 is movable in the radial direction of the rotating member 122 in the groove of the rotating member 122 and is fixed by a mounting bolt.
The male screw of the male screw member 111 and the female screw of the female screw member 121 may be combined in a screw shape via a plurality of balls.
When the linear motion shaft 110 is constrained to rotate and linearly moves, the female screw member 121 is rotated via the ball, and the rotary member 122 and the rotary shaft 126 that are coaxially fixed to the female screw member 121 rotate.

The frame 130 is a structure that rotatably supports the rotating body 120.
The frame 130 is provided with a gap between the inner surface of the frame and the rotating body.
The outer peripheral portion of the rotating member 122 is exposed to the outside of the frame 130.
For example, the frame 130 includes a pair of side plate members 131 and 132, a bearing 135, and a seal member 139.
The pair of side plate members 131 and 132 are a pair of disk-shaped members that sandwich the rotating member 122 from both sides.
The bearing 135 is a mechanical element that rotatably supports the rotating body 120.
The seal member 139 is a member that seals between the edge of the pair of side plate members 131 and 132 and the outer peripheral portion of the rotating member 122 in a liquid-tight manner.

  Corresponding to the plurality of moving members 128 being guided by the grooves and moving in the radial direction of the rotating member 122 and being fixed, the rotational inertia ratio of the rotating body 120 changes and the apparent inertial mass mr changes.

Next, the viscous mass damper with spring according to the eleventh embodiment of the present invention will be described with reference to the drawings. FIG. 13 is a concept of the viscous mass damper with spring according to the eleventh embodiment of the present invention. FIG. FIG. 16: is an AA arrow directional view of the viscous mass damper with a spring which concerns on 11th embodiment of this invention.

The viscous mass damper with a spring is a mechanical element that generates a reaction force corresponding to a linear displacement, and is configured by connecting the viscous mass damper 100 and the elastic member 200 in series.
The viscous mass damper 100 is a mechanical element that generates a reaction force corresponding to a linear motion displacement, and includes a linear motion shaft 110, a rotating body 120, a frame 130, and a viscous fluid 140.
Hereinafter, description of the same structure as the viscous mass damper with a spring concerning 10th Embodiment is abbreviate | omitted, and only a different location is demonstrated.

  The structures of the linear motion shaft 110, the frame 130, and the viscous fluid 140 are the same as those of the viscous mass damper with a spring according to the tenth embodiment.

The rotating body 120 is a member provided with a female screw that fits into the male screw.
The rotating body 120 includes a disk-shaped rotating member 122 provided with a female screw that fits into the male screw.
For example, the rotating body 120 includes a female screw member 121, a rotating member 122, a rotating shaft 126, and an additional member 129.
The female screw member 121 is a member provided with a female screw.
The rotating member 122 rotates around the central axis corresponding to the linear motion of the linear motion shaft 110.
The female screw member 121 and the disc-shaped rotating member 122 are arranged coaxially.
The rotating shaft 126 is a member that connects the female screw member 121 and the disk-shaped rotating member 122.
The additional member 129 is a member that can be attached or removed.
For example, the additional member 129 is a member that can be attached to or detached from the rotating member 122.
FIG. 13 shows a rotating body 120 that includes a female screw member 121 provided with a female screw, a rotating member 122, a rotating shaft 126, and an additional member 129, and the rotating shaft 126 supports the rotating member 122.
FIG. 16 shows a state in which the plurality of additional members 129 are fixed to the edge of the rotating member 122 with bolts.
The male screw of the male screw member 111 and the female screw of the female screw member 121 may be combined in a screw shape via a plurality of balls.
When the linear motion shaft 110 is constrained to rotate and linearly moves, the female screw member 121 is rotated via the ball, and the rotary member 122 and the rotary shaft 126 that are coaxially fixed to the female screw member 121 rotate.

  Corresponding to the attachment / detachment of the plurality of additional members 129 to / from the edge of the rotating member 122, the rotational inertia ratio of the rotating body 120 changes, and the apparent inertial mass mr changes.

Next, a viscous mass damper with a spring according to a twelfth embodiment of the present invention will be described with reference to the drawings. FIG. 14 shows a concept of the viscous mass damper with a spring according to the twelfth embodiment of the present invention. FIG.

The viscous mass damper with a spring is a mechanical element that generates a reaction force corresponding to a linear displacement, and is configured by connecting the viscous mass damper 100 and the elastic member 200 in series.
The viscous mass damper 100 is a mechanical element that generates a reaction force corresponding to a linear motion displacement, and includes a linear motion shaft 110, a rotating body 120, a frame 130, and a viscous fluid 140.
Hereinafter, description of the same structure as the viscous mass damper with a spring concerning 10th Embodiment is abbreviate | omitted, and only a different location is demonstrated.

  The structure of the linear motion shaft 110 is the same as that of the viscous mass damper with a spring according to the tenth embodiment.

The rotating body 120 is a member provided with a female screw that fits into the male screw.
The rotating body 120 includes a disk-shaped rotating member 122 provided with a female screw that fits into the male screw.
For example, the rotating body 120 includes a female screw member 121, a rotating member 122, a rotating shaft 126, and a moving member 128.
The female screw member 121 is a member provided with a female screw.
The rotating member 122 rotates around the central axis corresponding to the linear motion of the linear motion shaft 110.
The female screw member 121 and the disc-shaped rotating member 122 are arranged coaxially.
The rotating shaft 126 is a member that connects the female screw member 121 and the disk-shaped rotating member 122.
The moving member 128 is a member attached so as to be movable in the radial direction of the rotating member.
For example, the moving member 128 is a member attached to the rotating member 122 so as to be movable in the radial direction.
FIG. 14 shows a rotating body having the same structure as the rotating body of the viscous mass damper with spring according to the tenth embodiment.
The male screw of the male screw member 111 and the female screw of the female screw member 121 may be combined in a screw shape via a plurality of balls.
When the linear motion shaft 110 is constrained to rotate and linearly moves, the female screw member 121 is rotated via the ball, and the rotary member 122 and the rotary shaft 126 that are coaxially fixed to the female screw member 121 rotate.
The rotating member 122 is exposed to the outside of the frame 130, unlike the rotating body of the viscous mass damper with a spring according to the tenth embodiment.

The frame 130 is a structure that rotatably supports the rotating body.
The frame 130 includes a member that covers the female screw member 121 and a bearing 135.
A gap is provided between the member that covers the female screw member 121 and the female screw member 121.
The bearing 135 is a mechanical element that rotatably supports the rotating body 120.

The viscous fluid 140 is a liquid sealed in a gap between the inner surface of the frame and the rotating body.
The viscous fluid 140 is enclosed in a gap between the inner surface of the member covering the female screw member 121 and the rotating body.

  Corresponding to the plurality of moving members 128 being guided by the grooves and moving in the radial direction of the rotating member 122, the rotational inertia ratio of the rotating body 120 changes and the apparent inertial mass mr changes.

Next, a viscous mass damper with a spring according to a thirteenth embodiment of the present invention will be described based on the drawings. FIG. 17 is a partial concept of a viscous mass damper with a spring according to the ninth embodiment of the present invention. FIG.
The viscous mass damper with a spring is a mechanical element that generates a reaction force corresponding to a linear displacement, and is configured by connecting the viscous mass damper 100 and the elastic member 200 in series.
The viscous mass damper 100 is a mechanical element that generates a reaction force corresponding to a linear motion displacement, and includes a linear motion shaft 110, a rotating body 120, a frame 130, and a viscous fluid 140.
Hereinafter, description of the same structure as the viscous mass damper with a spring concerning 9th embodiment is abbreviate | omitted, and only a different location is demonstrated.

  The structure of the viscous mass damper is the same as that of the viscous mass damper with a spring according to the ninth embodiment.

The elastic member 200 is a member that generates an elastic reaction force corresponding to the linear displacement.
The elastic member has a laminated elastic plate 214 that overlaps with the direction intersecting the direction of linear displacement.
The laminated elastic plate 214 includes a laminated elastic plate body 215 formed with a through hole penetrating in the plate thickness direction, and a laminated elastic plate piece 216 that can be inserted into or removed from the through hole.
The laminated elastic plate 214 includes a laminated elastic plate body 215 formed with a plurality of through holes penetrating in the plate thickness direction, and a plurality of laminated elastic plate pieces 216 that can be inserted into or removed from the through holes.
When the laminated elastic plate segment 216 is extracted from the through hole, the shear resistance of the laminated elastic plate 214 is reduced, and the elastic coefficient of the elastic member 200 is reduced.
When the laminated elastic plate segment 216 is inserted into the through hole, the shear resistance of the laminated elastic plate 214 is increased, and the elastic coefficient of the elastic member 200 is increased.

  The elastic coefficient kb and the damper natural frequency ωr change in response to fitting or removing the laminated elastic plate piece 216 from the through hole.

Next, the viscous mass damper with spring according to the fourteenth embodiment of the present invention will be described with reference to the drawings. FIG. 18 is a partial concept of the viscous mass damper with spring according to the ninth embodiment of the present invention. FIG.
The viscous mass damper with a spring is a mechanical element that generates a reaction force corresponding to a linear displacement, and is configured by connecting the viscous mass damper 100 and the elastic member 200 in series.
The viscous mass damper 100 is a mechanical element that generates a reaction force corresponding to a linear motion displacement, and includes a linear motion shaft 110, a rotating body 120, a frame 130, and a viscous fluid 140.
Hereinafter, description of the same structure as the viscous mass damper with a spring concerning 9th embodiment is abbreviate | omitted, and only a different location is demonstrated.

  The structure of the viscous mass damper is the same as that of the viscous mass damper with a spring according to the ninth embodiment.

The elastic member 200 is a member that generates an elastic reaction force corresponding to the linear displacement.
The elastic member has a laminated elastic plate 214 that overlaps with the direction intersecting the direction of linear displacement.
The laminated elastic plate 214 includes a laminated elastic plate member that overlaps in the direction along the plate surface, and at least a part of the laminated elastic plate member 217 can be removed or attached.
For example, the laminated elastic plate is composed of a plurality of laminated elastic plate members concentrically overlapping in a direction along a plurality of plate surfaces, and at least a part of the laminated elastic plate member 217 can be removed or attached.
For example, the laminated elastic plate is configured by a laminated elastic plate member that spirally overlaps in a direction along a plurality of plate surfaces, and at least a part of the laminated elastic plate member 217 can be removed or attached.
When at least a part of the laminated elastic plate member 217 is removed, the shear resistance of the laminated elastic plate 214 is reduced, and the elastic coefficient of the elastic member 200 is reduced.
When at least a part of the laminated elastic plate member 217 is attached, the shear resistance of the laminated elastic plate 214 is increased, and the elastic coefficient of the elastic member 200 is increased.

  Corresponding to the addition or removal of at least a part of the laminated elastic plate member 217, the elastic coefficient kb and the damper natural frequency ωr change.

Below, the usage method of the viscous mass damper with a spring concerning embodiment of this invention is demonstrated based on a figure.
FIG. 19 is an operation diagram of the viscous mass damper with a spring according to the embodiment of the present invention.

FIG. 19 shows that a viscous mass damper with a spring is provided between the foundation and the target structure in order to isolate the target structure.
Support structure 40 supports the weight of the target structure.
A viscous mass damper with a spring makes the direction of linear motion displacement horizontal, fixes one connecting member to the foundation, and fixes the other connecting member to the target structure.

FIG. 19 shows that a viscous mass damper with a spring is provided between the layers of the target structure to dampen the target structure.
A viscous mass damper with a spring fixes one connecting member to the lower layer and fixes the other connecting member to the upper layer.
For example, a viscous mass damper with a spring is provided with the direction of linear motion displacement along the horizontal direction.
For example, a viscous mass damper with a spring is provided with the direction of linear motion displacement along an oblique direction.
For example, a viscous mass damper with a spring is provided with the direction of linear displacement along the vertical direction.
Using the viscous mass damper with a spring according to the embodiment of the present invention, the natural frequency, the damping coefficient, and the like can be optimized to exhibit seismic isolation performance and vibration control performance.

Moreover, as explained above, the viscous mass damper with a spring according to the present invention has the following effects due to its configuration.
A viscous mass comprising a linear motion shaft 110 having a male screw, a female screw fitted to the male screw, a rotary body 120 rotatably supported by the frame 130, and a viscous fluid 140 enclosed in a gap between the rotary body 120 and the frame 130. The damper has an apparent inertial mass mr, which is a value obtained by dividing the reaction force acting when the linear motion shaft 110 is linearly displaced at a predetermined relative acceleration by the relative acceleration of the linear motion displacement, and the linear motion shaft at a certain relative distance. It has a damping coefficient c corresponding to a value obtained by dividing the reaction force acting when linearly moving at a speed by the relative speed.
Further, since the separation distances D1 and D2 of at least a part of the gap between the inner surface of the frame 130 and the rotating body 120 can be changed, the attenuation coefficient c changes corresponding to the change in the separation distance.
Further, the pair of disk-shaped side plate members 131 and 132 sandwich the disk-shaped side surfaces of the rotating member 122 from both sides, and at least one of the pair of side plate members 131 and 132 approaches the rotating member 122. Alternatively, since the relative movement is performed so as to be separated from each other, the attenuation coefficient c changes corresponding to the relative movement.
Further, a pair of disk-shaped side plate members 131 and 132 sandwich the rotating member 122 from both sides, a screw type coupling member 133 connects a pair of side plate members, and a screw type coupling member 133 is twisted to form a pair. Since the side plate members 131 and 132 are moved toward and away from each other and at least one of the pair of side plate members 131 and 132 is moved toward and away from the rotating member 122, the side plate members 131 and 132 move relative to each other. Corresponding to the above, the attenuation coefficient c changes.
In addition, a pair of disk-shaped side plate members 131 and 132 of the frame 130 sandwich the rotating member 122 from both sides, and the pair of side plate members 131 and 132 are screwed together at the edges of each other to form a pair of side plate members 131. , 132 can rotate relative to each other so that at least one of the pair of side plate members approaches or separates from the rotating member 122 when at least one of the pair of side plate members 131, 132 approaches or separates from each other. Since it did in this way, the attenuation coefficient c changes corresponding to rotating at least one of a pair of side plate members.
Further, since the viscous fluid 140 is taken in and out of the frame 130 so that the amount enclosed can be adjusted, the damping coefficient c changes according to the amount of the viscous fluid 140 enclosed in the frame 130.
Further, the disk-like rotating member 122 of the rotating body 120 rotates around the central axis corresponding to the linear motion of the linear motion shaft 110, and a part of the rotational member 122 is immersed in the viscous fluid 140. Therefore, the damping coefficient c changes corresponding to a part of the change of the rotating member 122 immersed in the viscous fluid 140.
In addition, the rotating body 120 includes the rotating member 122 and the additional member 123, and the rotating member 122 is connected to a member provided with a female screw so that the additional member 123 can be attached to or detached from the rotating member 122. Corresponding to attaching or detaching the additional member 123 to or from the rotating member 122, the inertial mass mr changes and the damper natural frequency ωr changes.
Further, the disk-shaped rotating member 122 of the rotating body 120 rotates around the central axis corresponding to the linear motion of the linear motion shaft 110, and the rotational body 120 includes the rotational member 122 and the additional member 123. Since the rotating member 122 is connected to the female screw member 121, and the additional member 123 can be coaxially attached to or detached from the rotating member 122, corresponding to attaching or removing the additional member 123 to or from the rotating member 122, The inertial mass mr changes and the damper natural frequency ωr changes.
In addition, the disk-shaped rotating member 122 of the rotating body 120 rotates around the central axis corresponding to the linear motion of the linear motion shaft, and the rotating body 120 has the rotating member 122 and the moving member 124. 122 is connected to the female screw member 121, and the moving member 124 is guided by the guide member 125 so that it can be moved and fixed in the radial direction of the rotating member 122, so that the moving member 124 moves in the radial direction of the rotating member 122. In response to the change, the inertial mass mr changes and the damper natural frequency ωr changes.
Further, the elastic coefficient kb, which is a value obtained by dividing the reaction force generated when the spring-equipped viscous mass damper displaces the spring element by the relative distance in the linear motion direction, and the linear motion shaft of the viscous mass damper linearly move. The damper natural frequency ωr corresponding to the apparent inertial mass mr, which is a value obtained by dividing the reaction force acting in the linear motion direction by the relative acceleration when the linear motion is performed at a predetermined relative acceleration in the direction and the linear motion of the viscous mass damper And a damping coefficient c corresponding to a value obtained by dividing the reaction force acting in the linear motion direction by the relative speed when the dynamic axis is linearly moved at a constant relative speed.
In addition, the elastic member 200 has an elastic beam 220 that extends so as to intersect the displacement direction of the linear motion displacement and is fixed on one side and connected on the other side to the viscous mass damper 100. The elastic beam 220, the viscous mass damper 100, Since the connecting position of the elastic beam 220 and the viscous mass damper 100 can be changed along the longitudinal direction of the elastic beam 220, the connecting position of the elastic beam 220 can be changed along the longitudinal direction of the elastic beam 220. The elastic coefficient kb changes and the damper natural frequency ωr changes.
Further, the elastic member 200 has an elastic beam 220 that extends in the direction of displacement of the linear displacement and is fixed on one side and connected to the viscous mass damper on the other side, and the elastic beam 220 is connected to the viscous mass damper. Since the fixed plate spring 221 is a fixed plate spring 221 and the additional plate spring 224 is a plate spring that can be attached to or detached from the fixed plate spring 221, the additional plate spring 224 is attached to the fixed plate spring 221. Corresponding to the removal, the elastic coefficient kb changes and the damper natural frequency ωr changes.
In addition, since the elastic member 200 has a plurality of laminated elastic plates 214 that overlap in the direction intersecting the direction of displacement of the linear motion displacement, the number of laminated elastic plates 214 can be changed. Corresponding to changing the number of laminated elastic plates, the elastic coefficient kb changes and the damper natural frequency ωr changes.
In addition, since the laminated elastic plate 214 includes the laminated elastic plate main body 215 formed with a through hole penetrating in the plate thickness direction and the laminated elastic plate piece 216 that can be fitted into the through hole, The elastic coefficient kb changes and the damper natural frequency ωr changes in response to insertion or extraction from the through hole of the laminated elastic plate body.
In addition, since the laminated elastic plate 214 includes the laminated elastic plate member 217 that overlaps in the direction along the plate surface and at least a part of the laminated elastic plate member 217 can be removed, at least one of the laminated elastic plate members 217 can be removed. Corresponding to attaching or removing the part, the elastic coefficient kb changes and the damper natural frequency ωr changes.

The present invention is not limited to the embodiments described above, and various modifications can be made without departing from the spirit of the invention.
Although the screw-type coupling member 133 has been described as being coupled to the first side plate member 131 with a forward screw and coupled to the second side plate member 132 with a reverse screw, the present invention is not limited to this. For example, a pair of screw-type coupling members 133 are connected to each other. One screw-type coupling member 133 is screw-coupled to the first side plate member 131 and pushes the second side plate member 132, and the other screw-type coupling member 133 is screw-coupled to the second side plate member 132 and is coupled to the first side plate member 131. May be pressed.

It is a model diagram of a vibration system according to an embodiment of the present invention. It is a conceptual diagram of the viscous mass damper with a spring which concerns on 1st embodiment of this invention. It is a conceptual diagram of the viscous mass damper with a spring which concerns on 2nd embodiment of this invention. It is a conceptual diagram of the viscous mass damper with a spring which concerns on 3rd embodiment of this invention. It is a conceptual diagram of the viscous mass damper with a spring which concerns on 4th embodiment of this invention. It is a conceptual diagram of the viscous mass damper with a spring which concerns on 5th embodiment of this invention. It is a conceptual diagram of the viscous mass damper with a spring which concerns on 6th embodiment of this invention. It is a conceptual diagram of the viscous mass damper with a spring which concerns on 7th embodiment of this invention. It is a conceptual diagram of the viscous mass damper with a spring which concerns on 8th embodiment of this invention. It is a conceptual diagram of the viscous mass damper with a spring which concerns on embodiment of this invention. It is a partial conceptual diagram of the viscous mass damper with a spring which concerns on 9th embodiment of this invention. It is a key map of a viscous mass damper with a spring concerning a 10th embodiment of the present invention. It is a conceptual diagram of the viscous mass damper with a spring which concerns on 11th embodiment of this invention. It is a conceptual diagram of the viscous mass damper with a spring which concerns on 12th embodiment of this invention. It is an AA arrow directional view of the viscous mass damper with a spring concerning an 11th embodiment of the present invention. It is a BB arrow line view of the viscous mass damper with a spring concerning a 12th embodiment of the present invention. It is a partial conceptual diagram of the viscous mass damper with a spring which concerns on 13th embodiment of this invention. It is a partial conceptual diagram of the viscous mass damper with a spring which concerns on 14th embodiment of this invention. It is an effect | action figure of the viscous mass damper with a spring which concerns on embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Viscous mass damper system 11 Inertial connection element 12 Damper element 20 Spring element 30 Target structure 31 Main mass 32 Main elastic element 33 Mounting part 40 Support structure 100 Viscous mass damper 110 Linear motion shaft 111 Male screw member 120 Rotating body 121 Female screw member 122 Rotating member 123 Additional member 124 Moving member 125 Guide member 126 Rotating shaft 127 Rotating member 128 Moving member 129 Additional member 130 Frame 131 First side plate member 132 Second side plate member 133 Screw type coupling member 134 Screw portion 135 Bearing 136 Frame lid 137 Viscosity Fluid inlet pipe 138 Viscous fluid discharge pipe 140 Viscous fluid 150 Connecting member 151 First connecting member 152 Second connecting member 153 Third connecting member 154 Fourth connecting member 200 Elastic member 211 Elastic plate 212 First flange 213 Second flange 214 laminated elastic plate 215 laminated elastic plate body 216 laminated elastic plate pieces 217 laminated elastic plate member 220 elastic beam 221 fixed plate spring 222 first guide member 223 second guide member 224 additional plate spring

Claims (14)

A viscous mass damper that generates reaction force in response to linear displacement,
A linear motion shaft provided with a male screw oriented in the screw feed direction along the displacement direction of the linear motion displacement;
A rotating body provided with a female screw fitted to the male screw;
A frame that rotatably supports the rotating body;
A viscous fluid sealed in a gap between the inner surface of the frame and the rotating body;
With
The separation distance of at least a part of the gap between the inner surface of the frame and the rotating body can be changed.
This is a viscous mass damper. The rotating body has a disk-shaped rotating member that rotates around a central axis corresponding to the linear motion of the linear motion shaft;
The frame has a pair of disk-shaped side plate members sandwiching the disk-shaped side surfaces of the rotating member from both sides;
Relative movement so that at least one of the pair of side plate members approaches or separates from the rotating member;
The viscous mass damper according to claim 1. The frame includes a pair of disc-shaped side plate members sandwiching the rotating member from both sides and a screw type coupling member that connects the pair of side plate members by a screw structure;
When the threaded coupling member is twisted, the pair of side plate members can move relative to each other so that at least one of the pair of side plate members approaches or separates from the rotating member. ,
The viscous mass damper according to claim 2. The frame has a pair of disk-shaped side plate members sandwiching the rotating member from both sides;
The pair of side plate members are screwed together at the edges of each other;
When at least one of the pair of side plate members is rotated, the pair of side plate members approach or separate from each other, and at least one of the pair of side plate members approaches or separates from the rotating member. Relative movement,
The viscous mass damper according to claim 2. A viscous mass damper that generates reaction force in response to linear displacement,
A linear motion shaft provided with a male screw oriented in the screw feed direction along the displacement direction of the linear motion displacement;
A rotating body provided with a female screw fitted to the male screw;
A frame that rotatably supports the rotating body;
A viscous fluid sealed in a gap between the inner surface of the frame and the rotating body;
With
The viscous fluid can be adjusted in and out by putting the viscous fluid in and out of the frame.
This is a viscous mass damper. The rotating body has a disk-shaped rotating member that rotates around a central axis corresponding to the linear motion of the linear motion shaft;
A part of the rotating member is immersed in the viscous fluid;
The viscous mass damper according to claim 5. A viscous mass damper that generates reaction force in response to linear displacement,
A linear motion shaft provided with a male screw oriented in the screw feed direction along the displacement direction of the linear motion displacement;
A rotating body provided with a female screw fitted to the male screw;
A frame that rotatably supports the rotating body;
A viscous fluid sealed in a gap between the inner surface of the frame and the rotating body;
With
The rotating body includes a rotating member connected to a member provided with the female screw and an additional member that can be attached or detached.
This is a viscous mass damper. A viscous mass damper that generates reaction force in response to linear displacement,
A linear motion shaft provided with a male screw oriented in the screw feed direction along the displacement direction of the linear motion displacement;
A rotating body provided with a female screw fitted to the male screw;
A frame that rotatably supports the rotating body;
A viscous fluid sealed in a gap between the inner surface of the frame and the rotating body;
With
The rotating body is connected to the member provided with the female screw, and is a disk-like rotating member that rotates around a central axis corresponding to the linear motion of the linear motion shaft, and is coaxially detached from the rotational shaft of the rotational member. An additional member that can be attached,
This is a viscous mass damper. A viscous mass damper that generates reaction force in response to linear displacement,
A linear motion shaft provided with a male screw oriented in the screw feed direction along the displacement direction of the linear motion displacement;
A rotating body provided with a female screw fitted to the male screw;
A frame that rotatably supports the rotating body;
A viscous fluid enclosed in a gap between the inner surface of the frame and the rotating body;
With
The rotating body is connected to a member provided with the female screw, and is attached to a disk-shaped rotating member that rotates about a central axis corresponding to the linear motion of the linear motion shaft, and is movable in the radial direction of the rotational member. A moving member
This is a viscous mass damper. A viscous mass damper with a spring that generates a reaction force corresponding to a linear displacement,
A linear motion shaft provided with a male screw directed in a screw feed direction along a displacement direction of the linear motion displacement, a rotary body provided with a female screw fitted to the male screw, a frame for rotatably supporting the rotary body, and the frame A viscous damper having a viscous fluid sealed in a gap between the inner surface of the rotating body and the rotating body;
An elastic member that generates an elastic reaction force in response to a linear displacement;
With
The viscous damper and the elastic member are connected in series,
The elastic member has an elastic beam that crosses the displacement direction of the linear displacement and has one side fixed and the other side connected to the viscous damper,
The connection position of the elastic beam and the viscous damper can be changed along the longitudinal direction of the elastic beam.
This is a viscous mass damper with a spring. A viscous mass damper with a spring that generates a reaction force corresponding to a linear displacement,
A linear motion shaft provided with a male screw directed in a screw feed direction along a displacement direction of the linear motion displacement, a rotary body provided with a female screw fitted to the male screw, a frame for rotatably supporting the rotary body, and the frame A viscous damper having a viscous fluid sealed in a gap between the inner surface of the rotating body and the rotating body;
An elastic member that generates an elastic reaction force in response to a linear displacement;
With
The viscous damper and the elastic member are connected in series,
The elastic member has an elastic beam that crosses the displacement direction of the linear displacement and has one side fixed and the other side connected to the viscous damper,
The elastic beam has a fixed leaf spring that is a leaf spring connected to the viscous damper, and an additional leaf spring that is a leaf spring that can be attached to or detached from the stationary leaf spring.
This is a viscous mass damper with a spring. A viscous mass damper with a spring that generates a reaction force corresponding to a linear displacement,
A linear motion shaft provided with a male screw directed in a screw feed direction along a displacement direction of the linear motion displacement, a rotary body provided with a female screw fitted to the male screw, a frame for rotatably supporting the rotary body, and the frame A viscous damper having a viscous fluid sealed in a gap between the inner surface of the rotating body and the rotating body;
An elastic member that generates an elastic reaction force in response to a linear displacement;
With
The viscous damper and the elastic member are connected in series,
The elastic member has a plurality of laminated elastic plates overlapped in the direction intersecting the displacement direction of the linear displacement,
The number of laminated elastic plates can be changed,
This is a viscous mass damper with a spring. A viscous mass damper with a spring that generates a reaction force corresponding to a linear displacement,
A linear motion shaft provided with a male screw directed in a screw feed direction along a displacement direction of the linear motion displacement, a rotary body provided with a female screw fitted to the male screw, a frame for rotatably supporting the rotary body, and the frame A viscous damper having a viscous fluid sealed in a gap between the inner surface of the rotating body and the rotating body;
An elastic member that generates an elastic reaction force in response to a linear displacement;
With
The viscous damper and the elastic member are connected in series,
The elastic member has a laminated elastic plate overlapped in the direction intersecting the displacement direction of the linear displacement,
The laminated elastic plate includes a laminated elastic plate main body formed with a through hole penetrating in the plate thickness direction, and a laminated elastic plate piece that can be inserted into or removed from the through hole.
This is a viscous mass damper with a spring. A viscous mass damper with a spring that generates a reaction force corresponding to a linear displacement,
A linear motion shaft provided with a male screw directed in a screw feed direction along a displacement direction of the linear motion displacement, a rotary body provided with a female screw fitted to the male screw, a frame for rotatably supporting the rotary body, and the frame A viscous damper having a viscous fluid sealed in a gap between the inner surface of the rotating body and the rotating body;
An elastic member that generates an elastic reaction force in response to a linear displacement;
With
The viscous damper and the elastic member are connected in series,
The elastic member has a laminated elastic plate overlapped in the direction intersecting the displacement direction of the linear displacement,
The laminated elastic plate includes a laminated elastic plate member that overlaps in the direction along the plate surface,
At least a part of the laminated elastic plate member can be removed or attached.
This is a viscous mass damper with a spring.

Images