JPH0768992B2 - Vibration control device - Google Patents
Vibration control deviceInfo
- Publication number
- JPH0768992B2 JPH0768992B2 JP1254475A JP25447589A JPH0768992B2 JP H0768992 B2 JPH0768992 B2 JP H0768992B2 JP 1254475 A JP1254475 A JP 1254475A JP 25447589 A JP25447589 A JP 25447589A JP H0768992 B2 JPH0768992 B2 JP H0768992B2
- Authority
- JP
- Japan
- Prior art keywords
- center
- vibration
- rotating body
- gravity
- arc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Prevention Devices (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） この発明は構造物の揺れを、その振動に同調する物体の
振動を利用して抑制する、制震装置に関するものであ
る。Description: TECHNICAL FIELD The present invention relates to a vibration damping device that suppresses shaking of a structure by utilizing the vibration of an object that is synchronized with the vibration.
（発明が解決しようとする課題） 構造物の振動と同時に振動する物体の運動エネルギーを
利用して構造物の揺れを抑える方法として、構造物の頂
部に付加質量や液体を充満したタンク等を設置し、この
付加質量や液体を構造物に共振させ、そのときの運動エ
ネルギー，もしくは内部摩擦等による熱エネルギーに振
動エネルギーを変換することによりこれを消費する装置
が従来より実施されているが、これらの装置は概して物
体を構造物に共振させるために設定される振動周期の調
節が容易ではない。(Problems to be solved by the invention) As a method of suppressing the shaking of a structure by utilizing the kinetic energy of an object that vibrates at the same time as the vibration of the structure, a tank filled with additional mass or liquid is installed at the top of the structure. However, a device that consumes the additional mass or liquid by resonating it with a structure and converting it into kinetic energy at that time or thermal energy due to internal friction or the like to consume the vibration energy has been conventionally used. The device in general does not easily adjust the vibration period set to resonate the object with the structure.
これに対し、出願人は同様に構造物に共振する振り子の
運動エネルギーを利用した、振動エネルギーの吸収方法
を提案している（特開昭63−254247号，特開昭63−2978
37号等）。On the other hand, the applicant has also proposed a method of absorbing vibration energy by utilizing the kinetic energy of a pendulum resonating with the structure (Japanese Patent Laid-Open Nos. 63-254247 and 63-2978).
No. 37).
これらは基本的に構造物の固有周期に近い周期に振り子
長さを調節して質点の振り子を単に構造物から懸垂し、
これを構造物の振動に共振させることによってエネルギ
ーを振り子側へ移行させ、その吸収を行うものである
が、周期の調節は振り子長さを変えるのみで行え、また
装置としては構造が簡素である、等の利点を持ってい
る。These basically adjust the pendulum length to a period close to the natural period of the structure, and simply suspend the mass pendulum from the structure,
The energy is transferred to the pendulum side by resonating it with the vibration of the structure to absorb the energy, but the period can be adjusted only by changing the pendulum length, and the structure of the device is simple. , And so on.
この発明はこの振り子型の振動吸収装置を派生させたも
ので、より構造が簡素で、場所を取らない形式の装置を
加えて提案しようとするものである。The present invention is a derivative of this pendulum type vibration absorbing device, and is intended to be proposed by adding a device having a simpler structure and saving space.
（課題を解決するための手段） 本発明では構造物の振動とともに転がる回転体の振動を
利用することにより簡素化し、小型化した装置を構成す
る。(Means for Solving the Problem) In the present invention, by utilizing the vibration of the rotating body that rolls along with the vibration of the structure, a simplified and downsized device is configured.
回転体は鉛直断面が構造物との接触面上で円弧状の形状
をし、円弧の中心と重心とが偏心し、且つ中心が重心よ
り上に位置することにより構造物の振動に同調して転が
り振動する。The rotating body has a vertical cross section in an arc shape on the contact surface with the structure, the center of the arc is eccentric with the center of gravity, and the center is located above the center of gravity, thereby synchronizing with the vibration of the structure. Rolls and vibrates.
回転体の振動時の周期は例えばこれに接続され、円弧の
中心と重心間の偏心距離を調節する重りにより可変とさ
れる。重りを含めた回転体の重心は円弧の中心より下に
位置する。The period of vibration of the rotating body is connected to this, for example, and is variable by a weight that adjusts the eccentric distance between the center of the arc and the center of gravity. The center of gravity of the rotating body including the weight is located below the center of the arc.
構造物の振動は接触面と回転体周面間の摩擦力によって
回転体に伝えられ、より確実に伝達させるために、且つ
回転体の振動エネルギーを熱エネルギーに変換される量
を増すために接触面上にシートを接着してもよい。The vibration of the structure is transmitted to the rotating body by the frictional force between the contact surface and the peripheral surface of the rotating body, so that the vibration energy of the rotating body is contacted to increase the amount of vibration energy converted into heat energy. A sheet may be adhered to the surface.
（実施例） 以下本発明を一実施例を示す図面に基づいて説明する。(Example) The present invention will be described below with reference to the drawings illustrating an example.
この発明の制震装置Ａは構造物内に単に転がり自在に設
置されるもので、第１図に示すように鉛直断面が構造物
の接触面側で円弧状をした、例えば半円柱形の回転体１
からなり、円弧の中心Ｏと重心Ｇとが偏心し、且つ中心
Ｏが重心Ｇより上に位置することにより転がり振動し、
その振動時の運動エネルギーによって構造物の振動を吸
収するものである。The vibration damping device A of the present invention is simply installed in a structure so that it can be freely rolled. As shown in FIG. 1, the vertical cross section has an arc shape on the contact surface side of the structure, for example, a semi-cylindrical rotation. Body 1
And the center O of the arc and the center of gravity G are eccentric, and the center O is located above the center of gravity G to cause rolling vibration,
The vibration of the structure is absorbed by the kinetic energy during the vibration.
回転体１は構造物内の平坦面，または凹曲面、もしくは
これに近い形状の接触面Ｂ上を振動する。The rotating body 1 oscillates on a contact surface B having a flat surface, a concave curved surface, or a shape close to the flat surface in the structure.
回転体１が図示するような一様な半円柱形の場合は、そ
のままで中心Ｏと重心Ｇとが偏心するが、この偏心距離
は断面形状や第１図，第２図に示すように回転体１上に
接続される重り２の位置によって自由に変えられる。こ
のときも、重り２を含めた回転体１の重心Ｇは円弧の中
心Ｏより下に位置する。In the case where the rotating body 1 has a uniform semi-cylindrical shape as shown in the drawing, the center O and the center of gravity G are eccentric as they are, but this eccentric distance changes as shown in the sectional shape and in FIGS. 1 and 2. It can be freely changed by the position of the weight 2 connected to the body 1. Also at this time, the center of gravity G of the rotating body 1 including the weight 2 is located below the center O of the arc.
重り２は回転体１の上面側に、例えば図示するようにこ
こに螺合したボルト３が貫通して取り付けられ、そのナ
ット４の調節により回転体１に対して上下動自在となっ
ている。The weight 2 is attached to the upper surface side of the rotating body 1 by penetrating a bolt 3 which is screwed into the rotating body 1 as shown in the drawing, and is vertically movable with respect to the rotating body 1 by adjusting a nut 4 thereof.
第３図に示す、接触面Ｂ上の断面が円弧をなす回転体１
の振動時の周期Ｔは、回転体１の、瞬間の回転中心であ
る接触点Ｐを通る軸に関する慣性モーメントをＩ、中心
Ｏと重心Ｇとの間の距離をｈとして、 〔Ｍは回転体の質量〕で表されるため制震装置Ａの周期
Ｔは主としてこのｈの大きさで任意に調節されることに
なる。The rotating body 1 shown in FIG. 3 whose cross section on the contact surface B forms an arc.
The period T of the vibration of the rotor 1 is I, the moment of inertia of the rotor 1 about the axis passing through the contact point P which is the instantaneous center of rotation, and h is the distance between the center O and the center of gravity G. Since [M is the mass of the rotating body], the period T of the vibration damping device A is mainly adjusted arbitrarily by the size of h.
そしてこのｈは上記の通り、重り２の回転体１との距離
を調節することで自由に変えられ、ｈを大きくすればＴ
は短く、小さくすれば長くなり、それぞれ短周期，長周
期の構造物に回転体１、すなわち制震装置Ａが共振する
ことになり、ナット４の操作によって周期Ｔの微妙な調
整も可能である。And this h can be freely changed by adjusting the distance between the weight 2 and the rotating body 1 as described above.
Is short and becomes long if it is made small, and the rotating body 1, that is, the damping device A resonates with the structure having a short period and a long period, respectively, and the period T can be finely adjusted by operating the nut 4. .
構造物の振動時に制震装置Ａに構造物から与えられるエ
ネルギーＵは、第３図に鎖線で示すように回転体１がθ
だけ傾斜し、ＯがＯ′,GがＧ′に移動した状態で（1/
2）Ｉω２＋Mg（Ｒ−hcosθ） であるが、このエネルギーＵは接触面Ｂにおける摩擦に
加え、回転体１が回転運動と並進運動をすることにより
次第に消費され、同時に構造物の振動エネルギーが吸収
されることになる。The energy U given to the vibration control device A from the structure when the structure vibrates is θ when the rotating body 1 is θ as shown by the chain line in FIG.
Tilted only and O moved to O'and G moved to G '(1 /
2) Iω 2 + Mg (R-hcosθ) However, this energy U is gradually consumed in addition to the friction on the contact surface B and the rotary body 1 makes a rotary motion and a translational motion, and at the same time, the vibration energy of the structure is absorbed.
上記の通り本発明では振動周期Ｔが円弧の中心Ｏと重心
Ｇ間距離と、慣性モーメントＩ（円弧の半径Ｒ）との関
係で決まるため長周期に合わせる場合にも振り子タイプ
のようなスペースを要せずに済む。As described above, in the present invention, the vibration cycle T is determined by the relationship between the center O of the arc, the distance between the center of gravity G, and the moment of inertia I (radius R of the arc). You don't need to.
回転体１にはその周面と接触面Ｂとの間の摩擦力により
構造物の振動が伝えられるが、確実に、そして回転体１
のエネルギーが効率的に熱エネルギーに変換されるよ
う、接触面Ｂ上には例えば摩擦係数の大きいシート５が
接着される。The vibration of the structure is transmitted to the rotating body 1 by the frictional force between the peripheral surface of the rotating body 1 and the contact surface B.
For example, the sheet 5 having a large friction coefficient is adhered to the contact surface B so that the energy of is efficiently converted into heat energy.
このシート５に粘性体や粘弾性体等の材料を用いる等、
その材質を選択することにより回転体１の振動時に熱エ
ネルギーによる減衰効果を付加することができ、また回
転体１自身が転がり時に発生する音をこのシート５によ
って低減することができる。For this sheet 5, a material such as a viscous material or a viscoelastic material is used,
By selecting the material, a damping effect due to thermal energy can be added when the rotor 1 vibrates, and the sound generated when the rotor 1 itself rolls can be reduced by the seat 5.
（発明の効果） この発明は以上の通りであり、構造物内に設置され、転
がり振動する回転体の運動エネルギーを利用して構造物
の振動エネルギーを吸収するものであるため装置自身が
簡素で、小型であり、設置スペースが狭小で済むことに
加え、装置自身が復元能力を持つため設置面を選ばず、
設置場所が特定されない。(Effects of the Invention) The present invention is as described above, and since the vibration energy of the structure is absorbed by utilizing the kinetic energy of the rotating body that is installed in the structure and vibrates in a rolling manner, the device itself is simple. In addition to being compact and requiring only a small installation space, the device itself has a restoration capability, so it can be installed anywhere.
Installation location is not specified.
第２項記載の発明は第１項の制震装置に重りを接続する
ことにより回転中心と重心間距離を変えるのみで回転体
の振動周期の調節を可能にしたものであるため調節作業
が容易であり、設置後に簡単に、自由に調節することが
できる。In the invention described in the second aspect, the adjustment work is easy because the vibration cycle of the rotating body can be adjusted only by changing the distance between the center of rotation and the center of gravity by connecting the weight to the vibration control device of the first aspect. It can be easily and freely adjusted after installation.
第３項記載の発明では構造物の振動をより確実に回転体
に伝達することができ、またシートの材質を選ぶことに
より回転体の運動エネルギーが熱エネルギーに変換され
るためそれによる減衰効果を得ることができる他、回転
体の振動時に生ずる音を消去することができる。According to the third aspect of the invention, the vibration of the structure can be more reliably transmitted to the rotating body, and the kinetic energy of the rotating body is converted into thermal energy by selecting the material of the sheet, so the damping effect due to it is In addition to being obtained, it is possible to eliminate the sound generated when the rotating body vibrates.
【図面の簡単な説明】 第１図は本発明の概要を示した斜視図、第２図はその側
面図、第３図は回転体の振動の様子を示した側面図であ
る。 Ａ……制震装置、Ｂ……接触面、１……回転体、２……
重り、３……ボルト、４……ナット、５……シート。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an outline of the present invention, FIG. 2 is a side view thereof, and FIG. 3 is a side view showing a vibration state of a rotating body. A: Vibration control device, B: Contact surface, 1 ... Rotating body, 2 ...
Weight: 3 ... bolt, 4 ... nut, 5 ... sheet.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 有田 友彦 東京都港区元赤坂１丁目２番７号 鹿島建 設株式会社内 (72)発明者 辻本 哲也 東京都港区元赤坂１丁目２番７号 鹿島建 設株式会社内 (72)発明者 黒川 泰嗣 東京都港区元赤坂１丁目２番７号 鹿島建 設株式会社内 (72)発明者 大類 哲 東京都港区元赤坂１丁目２番７号 鹿島建 設株式会社内 (56)参考文献 特開 昭61−256037（ＪＰ，Ａ) 実開 昭63−125241（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tomohiko Arita 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Tetsuya Tsujimoto 1-2-7 Moto-Akasaka, Minato-ku, Tokyo No. Kashima Construction Co., Ltd. (72) Inventor Taiji Kurokawa 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Satoshi Daiji 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Issued by Kashima Construction Co., Ltd. (56) References Japanese Patent Laid-Open No. 61-256037 (JP, A) Actually developed 63-125241 (JP, U)
Claims (3)
に転がり振動して構造物の振動を減衰させる装置であ
り、鉛直断面が構造物内における接触面上で円弧状の形
状をし、その円弧の中心と重心とが偏心し、且つ中心が
重心より上に位置する回転体からなる制震装置。1. A device installed in a structure for damping vibration of a structure by rolling and vibrating at the same time as vibration of the structure, the vertical cross section of which has a circular arc shape on a contact surface in the structure. , A center of gravity of the arc and the center of gravity are eccentric, and a center is located above the center of gravity.
を調節する重りが接続され、重りを含めた回転体の重心
は円弧の中心より下に位置していることを特徴とする第
１項記載の制震装置。2. The rotating body is connected with a weight for adjusting the eccentric distance between the center of the arc and the center of gravity, and the center of gravity of the rotating body including the weight is located below the center of the arc. The vibration control device according to item 1.
の接触面に摩擦力を生じさせるシート上に載っているこ
とを特徴とする第１項記載の制震装置。3. The vibration control device according to claim 1, wherein the rotating body is mounted on a sheet which is adhered to the contact surface and causes a frictional force on the contact surface with the rotating body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1254475A JPH0768992B2 (en) | 1989-09-29 | 1989-09-29 | Vibration control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1254475A JPH0768992B2 (en) | 1989-09-29 | 1989-09-29 | Vibration control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03117755A JPH03117755A (en) | 1991-05-20 |
| JPH0768992B2 true JPH0768992B2 (en) | 1995-07-26 |
Family
ID=17265563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1254475A Expired - Lifetime JPH0768992B2 (en) | 1989-09-29 | 1989-09-29 | Vibration control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0768992B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2026052602A1 (en) * | 2024-09-04 | 2026-03-12 | Esm Energie- Und Schwingungstechnik Mitsch Gmbh | Tuned mass damper assembly for tall, slim structures |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3696724B2 (en) * | 1997-09-26 | 2005-09-21 | 学校法人東海大学 | Vibration control structure using rolling vibration control device |
| JP2003074622A (en) * | 2001-08-31 | 2003-03-12 | Tokai Univ | Rolling type vibration damping device |
| JP4100095B2 (en) * | 2002-08-27 | 2008-06-11 | 鹿島建設株式会社 | Rolling pendulum, seismic isolation device and damping device using the rolling pendulum |
| JP5044843B2 (en) * | 2007-07-24 | 2012-10-10 | 公立大学法人高知工科大学 | Dynamic vibration absorber using locking |
| JP5201558B2 (en) * | 2011-10-17 | 2013-06-05 | 公立大学法人高知工科大学 | Dynamic vibration absorber using locking |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61256037A (en) * | 1985-05-08 | 1986-11-13 | Mitsubishi Heavy Ind Ltd | Dynamic vibration absorber |
| JPH0529562Y2 (en) * | 1987-02-09 | 1993-07-28 |
-
1989
- 1989-09-29 JP JP1254475A patent/JPH0768992B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2026052602A1 (en) * | 2024-09-04 | 2026-03-12 | Esm Energie- Und Schwingungstechnik Mitsch Gmbh | Tuned mass damper assembly for tall, slim structures |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03117755A (en) | 1991-05-20 |
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