JP3250054B2 - Damping device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration control device which is installed on the roof of a building such as a high-rise building or on the floor of a middle floor to attenuate the shaking of the building due to an earthquake at an early stage.

[0002]

2. Description of the Related Art As a vibration control device of this type, the vibration energy given to a building is converted into the kinetic energy of a weight, and the vibration is efficiently attenuated to reduce the vibration of the structure. Is already known (JP-A-3-163238). This is a development of a simple pendulum. As shown in FIG. 6, an example of the simple pendulum is installed, a base frame 3 is installed on a floor 1 of a building via an installation member 2, and left and right are mounted on the base frame 3. A total of four support rollers 4 are installed at required intervals, and a weight 5 as an additional mass body having a V-shaped bottom surface is placed on each of the left and right support rollers 4 in the left-right direction. The weight 5 is mounted so as to be swingable so as to vibrate in a single string, forms a spring system by a restoring force using gravity, and has left and right protrusions 6 on both front and rear side surfaces of the weight 5. The left and right buffers 8 corresponding to the protrusions 6 are attached to a stand 7 installed at a position sandwiching the front and rear, so that the swinging area of the weight 5 is restricted in a range where the protrusion 6 abuts on the buffer 8. And the weight 5
Is shaken at a phase delayed by 90 degrees with respect to the shake of the building so that the shake of the building can be rapidly reduced.

[0003]

However, in the case of the above-described vibration damping device, since the iron member is usually used as the mounting member 2 for mounting the base frame 3 on the floor 1 of the building, the weight 5 When a rocking motion occurs, solid-borne sound (vibration propagating through the building frame) is generated. Also, during an earthquake or when the protrusion 6 or the buffer 8 that regulates the swinging region of the weight 5 is damaged, the weight may be damaged. If the run 5 runs out of control, problems such as the possibility that the entire apparatus may fall down are caused.

Accordingly, the present invention is intended to reduce the solid-borne noise caused by the swinging of the weight during the occurrence of an earthquake and to prevent the danger of falling down of the device due to runaway of the weight. What you want to do.

[0005] In order to solve the above-mentioned problems, the present invention relates to a vibration damping device in which a weight is mounted on a base frame arranged on the floor of a building so as to be swingable in the left-right direction. A block in which a vibration isolator for preventing the generation of solid-borne noise is interposed between the base frame and the base frame so as to support the base frame, and is formed in a prismatic shape on both left and right sides of the base frame. The support brackets are formed on the left and right sides of the base frame so as to surround the block, and are fixed on the floor of the building to surround the block. Between the block surrounding portion of the bracket and the protruding end surface of the block, a vibration isolating material for suppressing a horizontal force acting on the base frame in the left-right direction is interposed, and the block of the support bracket is provided. Between the front and rear sides of the surrounding portion and the block, by interposing a vibration suppression member for suppressing the horizontal force in the longitudinal direction acting on the base frame and configured comprising.

Further, in a vibration damping device in which a weight is mounted on a base frame disposed on the floor of a building so as to be able to swing in the left-right direction, solid-state propagation occurs between the floor of the building and the base frame. An anti-vibration material for preventing generation of sound is interposed and installed so as to support the base frame, and a rectangular column-shaped block is protrudingly provided on both left and right side surfaces of the base frame. Support brackets shaped to surround from the outside are arranged on the left and right sides of the base frame so as to surround the block and fixed on the floor of the building, and the block surrounding portion of the support bracket and the upper surface of the block And a vibration isolator for suppressing the upward force acting on the base frame in the vertical direction.

[0007]

The vertical vibration force level of the apparatus itself is reduced by the vibration isolator between the floor of the building and the base frame, and the surrounding area of the block of the support bracket, the protruding end face and the front and rear side faces of the block are provided. The horizontal force in the left-right direction and the front-back direction can be received only by the left and right side portions of the base frame by the vibration damping material interposed between the base frames. In addition, an upward force acting on the base frame is received by the vibration isolator between the place surrounding the block of the support bracket and the upper surface of the block.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 5 show one embodiment of the present invention. As shown in FIG. 6, a V-shaped bottom surface is formed on a base frame 3 mounted on a floor 1 of a building. In the vibration damping device in which the weight 5 is mounted so as to be able to swing in the left-right direction (indicated by an arrow X), vibration isolation is provided at several places (usually four places) between the base frame 3 and the floor 1. The vibration in the vertical direction caused by the swinging of the weight 5 can be reduced by the vibration-proof material 9 with the material 9 interposed therebetween.
Blocks 10 formed in the shape of prisms
And a support bracket 11 shaped so as to surround the block 10 so that the upper surface 10a, the protruding end surface 10b, and the front and rear side surfaces 10c of the block 10 are opposed to each other with a predetermined gap therebetween. 1 and a vibration isolator 12 is provided between the support bracket 11 and the upper surface 10a of the block 10 as a stopper for suppressing an upward force in the vertical direction. An overturning force acting on the entire apparatus during a runaway can be received by the support bracket 11 via the vibration isolator 12, and furthermore, the support bracket 11 and the protruding end face 10 b of the block 10.
A vibration isolator 13 is interposed between the support bracket 11 and the front and rear side faces 10c of the block 10 to receive a horizontal force acting on the base frame 3 in the left-right direction. A vibration isolator 14 is provided as a stopper for receiving a horizontal force acting in the front-rear direction.
In FIG. 1, the same parts as those in FIG. 6 are denoted by the same reference numerals.

[0010] As shown in detail in FIG.
As shown in FIG. 2, one side of the intermediate plate 15 is sandwiched between two anti-vibration rubbers 16 and the two anti-vibration rubbers 16 are further interposed between two holding plates 17. 17 is fixed to the floor 1 of the building, and the other holding plate 17 is fixed to the lower surface of the base frame 3 so that the two anti-vibration rubbers 16 can receive a force acting vertically in the vertical direction. .

On the other hand, as shown in detail in FIG. 5, the vibration isolator 12 has a configuration similar to that of the vibration isolator 9 except that one holding plate 17 is omitted, and as shown in FIG.
The holding plate 17 is fixed to the upper surface 10 a of the block 10, and the two rubber cushions 16 act vertically upward with the two rubber cushions 16 so that the rubber cushion 16 on the side without the holding plate 17 faces the support bracket 11. It is designed to receive only power.

The vibration isolator 13 has the same structure as that of the vibration isolator 9 shown in FIG. 4. One of the holding plates 17 is fixed to the support bracket 11, and the other of the holding plates 17 is It is fixed to the protruding end face 10b so that it can receive a force acting on the left and right in the horizontal direction.

Further, the vibration isolator 14 has the same configuration as the vibration isolator 12 shown in FIG. 5, the holding plate 17 is fixed to the side surface 10c of the block 10, and the rubber isolator 16 faces the support bracket 11. As a result, only the force acting in the horizontal direction can be received.

In the present invention, since the base frame 3 is mounted on the floor 1 of the building via the vibration isolating material 9, even if a fluctuating load acts on the base frame 3 due to the swing of the weight 5. It can be stably supported by the vibration insulator 9, and even if vibrations are generated, the vibrations can be prevented from being directly transmitted to the building frame, so that the generation of solid-borne noise can be prevented. Also, in the event of an earthquake or in the event that the weight 5 runs out of control, a vertical load may be applied to the left and right ends of the base frame 3. Since the vibration isolator 12 is provided as a stopper between the upper surface 10a of the block 10 and the support bracket 11 fixed at this position, a vertically upward load acting on each of the left and right ends of the base frame 3 is applied. It can be received by the support bracket 11 via the vibration isolator 12. Therefore, it is possible to prevent the entire apparatus from falling down.

By the way, as described above, if the base frame 3 is installed on the floor 1 via the vibration isolating material 9, the weight 5
When the base frame 3 is displaced in the left-right direction at the time of swinging in the left-right direction, the original damping force of the damping device may be impaired. In the present invention, the block 10 of the support bracket 11 is surrounded. Because the vibration isolating material 13 is interposed between the place where the
The horizontal force of the base frame 3 in the left-right direction can be received by the support bracket 11 via the vibration isolator 13, whereby the original vibration control function of the device can be maintained.
Further, the vibration isolating material 1 is also provided between the portion surrounding the block 10 of the support bracket 11 and the front and rear side surfaces 10c of the block 10.
Since the support 4 is provided, the support bracket 11 can receive the horizontal force in the front-rear direction of the base frame 3 via the vibration isolator 14. Therefore, the horizontal force acting on the base frame 3 in the front and rear and left and right directions can be suppressed only by the small space between the block 10 and the support bracket 11 on the left and right side surfaces of the base frame 3, and the swing motion of the weight 5 can be suppressed. The rocking motion can be stably performed without generating meandering.

In the above embodiment, a hybrid type vibration damping device is shown in which an active type and a passive type are combined by a roller supporting mechanism having a V-shaped additional mass body.
For all types of hybrid type vibration damping devices,
It is needless to say that the present invention can be applied to either the active type or the passive type, and that various changes can be made without departing from the scope of the present invention.

[0017]

As described above, according to the vibration control device of the present invention, the vibration control device in which the weight is mounted on the base frame arranged on the floor of the building so as to be swingable in the left-right direction is provided. ,
Between the floor of the building and the base frame, anti-vibration material for preventing generation of solid-borne noise is interposed and installed so as to support the base frame, and rectangular prisms are formed on both left and right side surfaces of the base frame. A support bracket, which is formed by projecting a block formed on the base frame and surrounding the block from the outside, is disposed on both left and right sides of the base frame so as to surround the block, and is fixed on the floor of the building. And, between the block surrounding portion of the support bracket and the protruding end surface of the block, a vibration damping material for suppressing a horizontal force acting on the base frame in the left-right direction is interposed, and the block surrounding portion of the support bracket and Since a vibration isolating material is interposed between the front and rear side surfaces of the block to suppress the horizontal force acting on the base frame in the front-rear direction, the floor of the building The vibration damping material between the base frame and the base frame can reduce the vibration level of the device itself, preventing the generation of solid-borne noise, and enclose the support bracket block and the projecting end surface of the block. The anti-vibration material between the front and rear sides allows the horizontal force acting on the base frame in the left-right and front-rear directions to be reduced only by the small space between the blocks and the support brackets on the left and right side parts of the base frame. The swaying motion can be stabilized by maintaining the seismic function well and preventing the weight from meandering. In addition, the weight oscillates horizontally on the base frame arranged on the floor of the building. In the vibration damping device freely mounted, a vibration isolator for preventing the generation of solid-borne noise is interposed between the floor of the building and the base frame so as to support the base frame. A support bracket that is installed, and has a prism-shaped block protruding on the left and right side surfaces of the base frame, and has a shape in which the inside surrounds the block from the outside, the base bracket surrounds the block. Vibration damping material arranged on the left and right sides to be fixed on the floor of the building, and for suppressing a vertical upward force acting on the base frame between the block surrounding portion of the support bracket and the upper surface of the block. Is provided, an excellent effect that the device can be prevented from falling down at the time of runaway of the weight or the like is exhibited.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing one embodiment of a vibration control device of the present invention.

FIG. 2 is an enlarged view of a part II in FIG.

FIG. 3 is an enlarged view taken along the line III-III in FIG. 1;

FIG. 4 is an enlarged cross-sectional view showing a structure of a vibration isolator subjected to a compressive force and a tensile force.

FIG. 5 is an enlarged cross-sectional view showing a structure of a vibration isolator receiving only a compressive force.

FIG. 6 is a schematic diagram illustrating an example of a vibration control device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Building floor 3 Base frame 5 Weight 9 Vibration-proof material 10 Block 10a Top surface 10b Protruding end surface 10c Front and rear side surface 12,13,14 Vibration-proof material X right and left direction

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor: Tamotsu Murata 1-19-10 Mohri, Koto-ku, Tokyo Ema Tadashi Building Ishikawajima-Harima Heavy Industries Co., Ltd.Koto Office (72) Inventor: Hideo Morita, Moichi, Koto-ku, Tokyo 19-19 Chome Ema Tadashi Building Ishikawajima-Harima Heavy Industries Co., Ltd.Koto Office (72) Inventor Koji Yata 1st Shinnakahara-cho, Isogo-ku, Yokohama-shi, Kanagawa Prefecture Ishikawajima-Harima Heavy Industries Co., Ltd. Yutaro Yokokura 1 Shin-Nakahara-cho, Isogo-ku, Yokohama-shi, Kanagawa Pref.Ishikawajima-Harima Heavy Industries Co., Ltd. (72) Inventor Shunichi Yamada Kashima Construction Co., Ltd. (2-7-7 Moto-Akasaka, Minato-ku, Tokyo) Inventor Tomohiko Arita Kashima Construction Co., Ltd., 1-2-7 Moto-Akasaka, Minato-ku, Tokyo (72) Inventor Isao Nishimura Kashima Construction Co., Ltd., 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Person Yasushi Kurokawa Kashima Construction Co., Ltd., 1-2-7 Moto Akasaka, Minato-ku, Tokyo (72) Inventor Koji Ishii 199-1 Tobita-Ken, Chofu-shi, Tokyo Kashima Construction Co., Ltd.Technical Laboratory (72) Invention Person: Kei Ando 2-9-1-1, Tobita-Shi, Chofu-shi, Tokyo Inside Kashima Construction Co., Ltd. (72) Inventor Atsuo Minemura 2-1-1, Tobita-Shi, Tobita, Chofu-shi, Tokyo Kashima Construction Co., Ltd. (56 References JP-A-4-157234 (JP, A) JP-A-3-272343 (JP, A) JP-A-6-174409 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB (Name) E04H 9/02 341

Claims (2)

(57) [Claims] In a vibration damping device, a weight is mounted on a base frame disposed on a floor of a building so as to be swingable in the left-right direction. An anti-vibration material for preventing generation of sound is interposed and installed so as to support the base frame, and a rectangular column-shaped block is protrudingly provided on both left and right side surfaces of the base frame. Support brackets shaped to surround from the outside are arranged on the left and right sides of the base frame so as to surround the block and fixed on the floor of the building, and the block surrounding portion of the support bracket and the protrusion of the block Between the end surface and the vibration isolating material for suppressing the horizontal force acting on the base frame in the horizontal direction, between the block surrounding portion of the support bracket and the front and rear side surfaces of the block. An anti-vibration device characterized by interposing a vibration isolating material for suppressing a horizontal force acting on a base frame in a front-rear direction. 2. A vibration damping device in which a weight is mounted on a base frame disposed on a floor of a building so as to be swingable in the left-right direction. An anti-vibration material for preventing generation of sound is interposed and installed so as to support the base frame, and a rectangular column-shaped block is protrudingly provided on both left and right side surfaces of the base frame. Support brackets shaped to surround from the outside are arranged on the left and right sides of the base frame so as to surround the block and fixed on the floor of the building, and the block surrounding portion of the support bracket and the upper surface of the block A vibration damping material for suppressing a vertical upward force acting on the base frame.