JPH0220773A - Damping device - Google Patents

Abstract

PURPOSE:To check any occurrence of a couple of force as well as to make resistance force settable so high by separating a damping device from a structure, making a rotary disk or a rotor engaged or contact with a substructure or the like, and supporting it free of rotation according to displacement of a building. CONSTITUTION:A damping device A consisting of a rotary disk 1, having an engaged part 1b with a body B1 at an upper floor and installing center shafts 1a, 1a horizontally on both surfaces in a projecting manner, stator plates 2, 2, having an engaged part 2a with a body B2 at the lower floor and being set up horizontally at both sides of this rotary disk 1 and a viscous fluid 3 being filled up between both these disks 1 and 2, is set up in an interval between these bodies B1 and B2. The device A is separated from a structure, having it resisted to the horizontal movement by means of rotation, and it is made so as not to receive any overturning moment and vertical reaction on the mounting part. In this connection, it may be made into such a constitution that the stator plate 2 is installed in only one side of the rotary disk 1, a viscoelastic body is filled up between both these disks 1 and 2, or a spherical rotor is used in place of the rotary disk 1.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention is installed between the frames of upper and lower floors and used as a restraining wall. This relates to a vibration damping device.

[Problem to be solved by the invention]

Various restraint walls are being proposed that absorb the vibration energy generated in buildings during earthquakes, strong winds, etc. by converting it into thermal energy of viscous materials, etc. Due to the resistance force due to displacement, rotational force or a couple of vertical reaction forces act on the mounting part, making it difficult to design the mounting part and making it impossible to achieve high resistance. Dealing with the force at the attachment point is a challenge when manufacturing or installing seismic walls.

This invention has been made by focusing on the technical problem of seismic walls, and aims to propose a new seismic damping device that does not generate force couples at the part where it is attached to a structure.

[Means for solving the problem] In the present invention, the device is structurally separated from the upper and lower structures,
By locking or contacting the rotating plate (rotating body) with the upper floor frame or superstructure and supporting it so that it can rotate freely according to the displacement of the building, the generation of force couples is suppressed, and the problem described in (h) is solved. .

If the rotating plate (rotating body) is plate-shaped, the rotating plate (rotating body) is latched or fixed to the lower floor frame or lower structure at the central axis that projects horizontally at the center of the rotating plate (rotating body). The stationary plate is pivotally supported by the shell, rotates in one direction, and resists external forces.

In the spherical case, the rotating body is enclosed in a shell that is fixed to the substructure and resists any horizontal direction.

A viscous fluid or viscoelastic body that absorbs and consumes the vibration energy of the building is filled between the rotating plate (rotating body) and the stationary plate (shell body).

〔Example〕

The present invention will be explained below based on the drawings showing one embodiment.

First, the invention described in claim 1 will be explained.

As shown in FIG. 1, the vibration damping device A of the present invention includes a rotary plate 1 that locks in one direction on the upper floor frame B1, and a stationary plate 2 that locks on the lower floor frame B2 in the same direction. 2 and drawing board 1.2
It consists of a viscous fluid 3 filled in between.

Central shafts 1a and la are horizontally protruded from both sides of the central part of the rotary plate 1, and a locking part 1b that locks to the upper floor frame B1 is provided at the upper part.
is formed.

The stationary plate 2.2 is arranged parallel to both sides of the rotary plate 1 at a distance and supports the rotary plate 1 rotatably. 11 bodies on the floor B2
A locking portion 2a+2a that locks is provided in a protruding manner.

Since the stationary plate 2.2 needs to be arranged so as to surround the rotary plate 1, its outer periphery is closed by the side plate 2b and is integrated with each other.

The upper surface of each locking part 1b, 2a of the rotating plate 1 and the stationary plate 2, 2,
The lower surface is a protrusion that protrudes from the building blocks B, B, of the upper and lower floors,
, b, at a position that locks in one direction.

A viscous fluid 3 is filled between the rotating plate 1 and the stationary plates 2 and 2, which generates a damping force when the two are displaced relative to each other, and this viscous fluid 3 consumes the vibration energy transmitted to the rotating plate 1 when the building is horizontally displaced. be done.

This vibration damping device A is equipped with stationary plates 2 and 2 as shown in Figure 1-■.
The frame Bl is supported by stands 4, etc., which are arranged on both outer sides of the frame and support the central axis 1a1a.

It is installed between B2.

Fig. 2 shows another embodiment of the vibration damping device A. In this embodiment, the rotating plate 1 around the central axes 1a and 1a is stationary so that the rotating body 1 exerts a restoring force when it rotates. Board 2,
2 and an elastic body 5 bonded thereto.

This elastic body 5 also serves as a seal between the central axes 1a, la and the stationary plate 22.

Next, the invention described in the second claim will be explained.

As shown in FIG. 3, the vibration damping device A of this invention has a viscoelastic body 6 filled and bonded between a rotating plate 1 and a stationary plate 2 in place of the viscous fluid 3 of the first claim of the invention. .

In this invention, since the stationary plate 2 does not need to surround the rotary plate 1, it is also possible to arrange it only on one side of the rotary plate 1, as shown in FIG.

Further, since the viscoelastic body 6 itself has a restoring force, the elastic body 5 of the second embodiment of the first aspect of the invention is unnecessary.

The other rotating plate 1 and stationary plate 2 are the locking portions 1b.

2a, that the stationary plate 2 pivotally supports the central axis 1a of the rotary plate 1, and that it is installed by a stand 4 or the like, are completely the same as the first aspect of the invention.

FIG. 4-1, II shows another embodiment of the present invention.

Next, the invention recited in claim 3 will be explained.

As shown in FIG. 5, this invention includes a disk-shaped rotating body 7 that contacts an upper structure CI, and a lower structure C2 that surrounds this.
It consists of a shell 8 that is fixed to the shell 8 and a viscous fluid 3 filled in the shell 8, and is installed as a seismic isolation device in a seismic isolation structure that is mainly supported by seismic isolation bearings. be.

On both sides of the central part of the rotating body 7, there is a central axis, similar to the rotating plate 1 of the first aspect of the invention. a,? a is provided in a protruding manner, and the rotating body 7 rotates in one direction around the central axis 7a near a while contacting with the horizontal movement of the upper structure C1.

The shell body 8 wraps around this rotating body 7, and its central axis 7a, ?
a is pivotally supported and fixed by being embedded in the lower structure C2, and the inside of this container-shaped shell 8 is filled with the viscous fluid 3 as in the first aspect of the invention.

Force is transmitted between the rotating body 7 and the upper structure C6 by, for example, forming pinion-like and rack-like teeth on their contact surfaces, as shown in FIG.

Finally, the invention recited in claim 4 will be explained.

In this invention, as shown in FIG. 7, the rotating body 7 and the shell 8 of the third claim of the invention are made spherical, and the rotating body 7 is rotatable in any direction, and other configurations are as described in the third claim. Similar to the above invention, the rotating body 7 is engaged with the upper structure CI or comes into contact with the upper structure CI by a transmission means such as friction, and the shell 8 is fixed by being buried in the lower structure C2 or the like.

〔Effect of the invention〕

The present invention is as described above, and since the device is separated from the structure and has a structure that resists horizontal movement by rotating, the following effects can be obtained.

Since the mounting portion is not subjected to overturning moment or vertical reaction force, the design is easy, and therefore the resistance force of the device can be set high.

In the first to third claimed inventions, since the structure is not in contact with the structure in an out-of-plane direction, it is not subjected to any forced deformation due to out-of-plane interlayer displacement, and in the fourth claimed invention, the structure is free to rotate in any direction. Therefore, it will not be affected by it.

Since the device can be installed simply by installing it, installation and removal work is extremely easy.

[Brief explanation of the drawing]

Figures 1 and 2 show an embodiment of the first claimed invention, where ■ is an elevational view, ■ is a vertical sectional view, and Figures 3 and 4 are implementations of the second claimed invention. Examples are shown, where ■ is an elevation view, ■ and Figure 3 - ■ are longitudinal cross-sectional views, and Figure 5 -
r and u are respectively an elevational view and a side view showing an embodiment of the third claim, FIG. 6 is a partially enlarged view of FIG. 5-I, and FIGS. 7-I and II are the fourth claim. 1A and 1B are a vertical cross-sectional view and an orthogonal cross-sectional view, respectively, showing an embodiment of the invention. A1... Vibration damping device, B... Upper floor frame, B2... Lower floor frame, b,, b2...
Projection, 1... Rotating plate, 1a... Center shaft, lb... Locking part, 2... Stationary plate, 2
a...Locking part, 2b...Side plate, 3...
...Viscous fluid, 4...Stand, 5...
...Elastic body, 6...Viscoelastic body, C1...
... Upper structure, C2... Lower structure, 7...
...Rotating body, 7a... Central axis, 8...
...shell body. 1st gate construction 1st drawing

Claims (4)

[Claims] (1) A rotating plate with a central axis protruding horizontally on both sides of the central part and a locking part on the top that locks in one direction to the upper floor frame;
It is arranged in parallel with a distance on both sides of this rotary plate, rotatably supports the central axis, and has a locking part at the bottom that locks the lower floor frame in the same direction as the rotary plate locking part. A vibration control device consisting of a stationary plate and a viscous fluid filled between the two plates. (2) The central axis should protrude from at least one side of the rotary plate, a stationary plate should be placed on at least that side, and the space between the two plates should be filled with a viscoelastic material instead of viscous fluid, which is glued to both sides. The vibration damping device according to claim 1, characterized in that: (3) A disk-shaped rotating body with a central axis protruding horizontally on both sides of the central part, which contacts the upper structure and rotates with its horizontal movement, and a disk-shaped rotating body that is fixed to the lower structure and wraps around the rotating body. A vibration damping device consisting of a shell that rotatably supports a central axis and a viscous fluid filled inside the shell. (4) A spherical rotating body that contacts the upper structure and rotates in any direction along with its horizontal movement, a shell that is fixed to the lower structure and envelops the rotating body, and a viscous fluid filled in the shell. A vibration damping device consisting of.