JPH0544772A - Vibration controller - Google Patents
Vibration controllerInfo
- Publication number
- JPH0544772A JPH0544772A JP20187691A JP20187691A JPH0544772A JP H0544772 A JPH0544772 A JP H0544772A JP 20187691 A JP20187691 A JP 20187691A JP 20187691 A JP20187691 A JP 20187691A JP H0544772 A JPH0544772 A JP H0544772A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- resonance frequency
- suppressing device
- vibration
- value
- 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.)
- Pending
Links
Landscapes
- Vibration Prevention Devices (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は，一般産業機械装置や建
築物等の構造物（被制振対象物）の振動を抑制する振動
抑制装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration suppressing device for suppressing vibration of structures (objects to be damped) such as general industrial machinery and buildings.
【０００２】[0002]
【従来の技術】図３（Ａ）及び（Ｂ）は，特開昭５９−
１１０９３８号公報に開示された従来の振動抑制装置を
示す正面図及び側面図である。この振動抑制装置５１で
は，振動抑制すべき構造物５２に取り付けられた固定金
具５４に，上記構造物５２の矢印Ｘで示す振動方向に対
して直角な複数の面上に，互いに間隔を保って平行に複
数の板バネ５３が取り付けられている。上記板バネ５
３，５３は，粘弾性体又は粘性体５７（以下単に粘弾性
体と記す）を挾んで接合され，その自由端側に錘５６が
取り付けられている。そして，上記振動抑制装置５１で
は，上記構造物５２の振動に伴って上記錘５６及び板バ
ネ５３等が共振するように，当該振動抑制装置５１の固
有振動数ｆが次式により設定される。 ｆ＝１／２π・（ｋ／ｍ）1/2 …（１） 但し，ｋ…板バネ５３，固定金具５４及び構造物５２の
固定金具取付部等のバネ定数 ｍ…錘５６の質量 即ち，この振動抑制装置５１では，上記構造物５２の振
動によって上記板バネ５３等が上記固有振動数ｆでＹ方
向へ共振振動し，この共振振動による板バネ５３の変形
に伴う上記粘弾性体５７の剪断変形により，上記構造物
５２の振動エネルギーが熱エネルギーに変換されて大気
中に放出され，上記構造物５２の振動が抑制される。2. Description of the Related Art FIGS.
It is the front view and side view which show the conventional vibration suppression apparatus disclosed by 110938 gazette. In this vibration suppressing device 51, the fixing metal fittings 54 attached to the structure 52 to be suppressed in vibration are spaced from each other on a plurality of surfaces of the structure 52 at right angles to the vibration direction indicated by the arrow X. A plurality of leaf springs 53 are attached in parallel. The leaf spring 5
The viscoelastic bodies or viscoelastic bodies 57 (hereinafter simply referred to as viscoelastic bodies) are sandwiched between the joints 3, 53, and the weights 56 are attached to their free end sides. Then, in the vibration suppressing device 51, the natural frequency f of the vibration suppressing device 51 is set by the following equation so that the weight 56, the leaf spring 53 and the like resonate with the vibration of the structure 52. f = 1 / 2π · (k / m) 1/2 (1) where k is the spring constant of the leaf spring 53, the fixing metal fitting 54, and the fixing metal fitting mounting portion of the structure 52, etc. m is the mass of the weight 56, that is, In this vibration suppressing device 51, the leaf spring 53 and the like resonate in the Y direction at the natural frequency f due to the vibration of the structure 52, and the viscoelastic body 57 is deformed by the deformation of the leaf spring 53 due to the resonance vibration. Due to the shear deformation, the vibration energy of the structure 52 is converted into heat energy and released into the atmosphere, and the vibration of the structure 52 is suppressed.
【０００３】[0003]
【発明が解決しようとする課題】ところで，上記のよう
な従来の振動抑制装置５１では，特に粘弾性体の動特性
が温度に依存することから，予め設定された単一の固有
振動数も温度変化に伴って変動する。上記振動抑制装置
５１を装着した被制振対象物が特に屋外設備の場合に
は，上記のような傾向が更に顕著であり，初期の振動抑
制効果を得ることができない。そこで，本発明は，上記
事情に鑑みて創案されたものであり，環境温度の変化に
伴って当該装置の共振周波数を自己補正することのでき
る機能を備えた振動抑制装置の提供を目的とするもので
ある。By the way, in the conventional vibration suppressing device 51 as described above, since the dynamic characteristics of the viscoelastic body depend on the temperature in particular, the preset single natural frequency is also dependent on the temperature. It changes with changes. If the object to be damped with the vibration suppressing device 51 is an outdoor facility, the above tendency is more remarkable, and the initial vibration suppressing effect cannot be obtained. Therefore, the present invention has been devised in view of the above circumstances, and an object thereof is to provide a vibration suppressing device having a function capable of self-correcting the resonance frequency of the device in accordance with a change in environmental temperature. It is a thing.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成するため
に，本発明が採用する主たる手段は，その要旨とすると
ころが，粘弾性体又は粘性体を挾んで層状に接合された
複数の板バネを被制振対象物上に支持し，上記複数の板
バネの自由端側に錘を配備してなる振動抑制装置におい
て，上記錘を上記複数の板バネの自由端側と上記被制振
対象物に対する支持部近傍との間で移動可能に支持する
と共に，温度変化の度合に応じて当該振動抑制装置の共
振周波数を補正する方向へ該錘を移動させる移動機構を
設けた点に係る振動抑制装置である。In order to achieve the above object, the main means adopted by the present invention is, as its gist, a viscoelastic body or a plurality of leaf springs which are joined in layers to sandwich a viscous body. In a vibration suppressing device, in which a weight is provided on the free end side of the plurality of leaf springs and the weight is supported on the free end side of the plurality of leaf springs Vibration suppression according to the point that a moving mechanism is provided for movably supporting the object in the vicinity of the supporting portion and moving the weight in a direction to correct the resonance frequency of the vibration suppressing device according to the degree of temperature change. It is a device.
【０００５】[0005]
【作用】本発明に係る振動抑制装置においては，例えば
錘の位置を複数の板バネの被制振対象物に対する支持部
近傍の方向へ移動させることにより，バネ定数の値は高
められ，共振周波数を上げることができる。また，上記
板バネの自由端側へ上記錘を移動させることにより，バ
ネ定数を下げることができ，共振周波数の値を低下させ
ることができる。従って，当該振動抑制装置のバネ定数
の大きさが温度により変化するのを移動機構により錘を
適宜の方向へ移動させることにより，上記共振周波数を
環境温度が変化した場合でも一定に保持しておくことが
可能となる。In the vibration suppressing device according to the present invention, the value of the spring constant is increased and the resonance frequency is increased by moving the position of the weight toward the vicinity of the supporting portion of the plurality of leaf springs against the object to be damped. Can be raised. Further, by moving the weight to the free end side of the leaf spring, the spring constant can be lowered and the value of the resonance frequency can be lowered. Therefore, the magnitude of the spring constant of the vibration suppression device changes with temperature, and the weight is moved in an appropriate direction by the moving mechanism to keep the resonance frequency constant even when the environmental temperature changes. It becomes possible.
【０００６】[0006]
【実施例】以下添付図面を参照して，本発明を具体化し
た実施例につき説明し，本発明の理解に供する。尚，以
下の実施例は，本発明を具体化した一例であって，本発
明の技術的範囲を限定する性格のものではない。ここ
に，図１は本発明の一実施例に係る振動抑制装置の側面
図，図２は上記振動抑制装置の所定温度雰囲気下での動
特性を示すグラフである。この実施例に係る振動抑制装
置１では，図１に示す如く，粘弾性樹脂２を挾んで層状
に接合された２枚の鋼板３，３（板バネ）が，被制振対
象物４上に支持台５を介して左右対称に支持されてい
る。そして，上記鋼板３の自由端側には，それぞれ錘８
が対称に配備されている。上記錘８は，鋼板３の上面に
おいて例えばリニアベアリング（不図示）にて該鋼板３
の自由端側と上記支持台５に対する支持部５a 近傍との
間で移動可能に支持されており，該錘８と上記鋼板３の
自由端側端部とは形状記憶合金９にて連結されている。
上記形状記憶合金９は，環境温度の変化の度合いに応じ
て当該振動抑制装置１の共振周波数を補正する方向へ上
記錘８を移動させる移動機構を構成するものであって，
上記錘８を質量とする振動系の固有振動数を減衰させる
べき値の例えば１００倍以上の振動数を得ることのでき
るような線径の形状記憶合金９を用いることにより，当
該振動抑制装置１の共振時に上記錘８が不用意に振動し
ないように配慮がなされている。上記構成に係る振動抑
制装置１においては，例えば上記錘８を鋼板３上におい
てその支持部５a 側へ移動させることによりバネ定数の
値を高め，共振周波数の値を上げることができる（図１
（Ａ））。また，上記鋼板３上においてその自由端側へ
移動させることによりバネ定数を下げ，共振周波数の値
を低下させることができる（図１（Ｂ））。従って，上
記鋼板３のバネ定数の値が環境温度により変化するのを
上記錘８の位置を上記形状記憶合金９の作用にて適宜の
方向へ移動させることにより，当該振動抑制装置１にお
ける共振周波数を環境温度が変化した場合でも常に一定
に保持しておくことが可能となる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the accompanying drawings for the understanding of the present invention. The following embodiments are examples of embodying the present invention and are not of the nature to limit the technical scope of the present invention. 1 is a side view of a vibration suppressing device according to an embodiment of the present invention, and FIG. 2 is a graph showing dynamic characteristics of the vibration suppressing device under a predetermined temperature atmosphere. In the vibration suppressing device 1 according to this embodiment, as shown in FIG. 1, two steel plates 3 and 3 (leaf springs) sandwiched by a viscoelastic resin 2 and joined in layers are mounted on a vibration-damped object 4. It is supported symmetrically via a support base 5. On the free end side of the steel plate 3, weights 8 are respectively provided.
Are deployed symmetrically. The weight 8 is formed on the upper surface of the steel plate 3 by, for example, a linear bearing (not shown).
Is movably supported between the free end side and the vicinity of the supporting portion 5 a for the support base 5, and the weight 8 and the free end side end of the steel plate 3 are connected by a shape memory alloy 9. ing.
The shape memory alloy 9 constitutes a moving mechanism for moving the weight 8 in a direction to correct the resonance frequency of the vibration suppressing device 1 according to the degree of change of the environmental temperature.
By using the shape memory alloy 9 having a wire diameter capable of obtaining a frequency of, for example, 100 times or more of the value at which the natural frequency of the vibration system having the weight 8 as the mass should be attenuated, the vibration suppressing device 1 Consideration is given so that the weight 8 does not inadvertently vibrate at the time of resonance. In the vibration suppressing device 1 having the above-described configuration, for example, by moving the weight 8 on the steel plate 3 toward the supporting portion 5a side thereof, the value of the spring constant and the value of the resonance frequency can be increased (see FIG. 1).
(A)). Further, by moving the steel plate 3 to the free end side thereof, the spring constant can be lowered and the value of the resonance frequency can be lowered (FIG. 1 (B)). Therefore, by changing the position of the weight 8 in an appropriate direction by the action of the shape memory alloy 9 so that the value of the spring constant of the steel plate 3 changes depending on the ambient temperature, the resonance frequency of the vibration suppressing device 1 is increased. It is possible to keep the temperature constant even when the ambient temperature changes.
【０００７】以下に当該振動抑制装置１の一具体例を示
す。図１（Ａ）に示すように，支持部５a から１４１ｍ
ｍの位置に４００ｇの錘８が配設され，例えば２０℃の
雰囲気温度下でその共振周波数が３６．９Ｈｚとなるよ
うに設定されている（図２（Ａ）参照）。ここで例えば
上記錘８が上記鋼板３上のその位置で固定状態にあるも
のと仮定した場合，例えば５℃雰囲気温度下においては
その共振周波数の値は３９．２Ｈｚとなる（図２（Ｂ）
参照）。ところが，当該振動抑制装置１においては，上
記形状記憶合金９の温度変化に伴う作用により，５℃雰
囲気温度下では上記錘８は上記支持部５a から１４７ｍ
ｍの位置へ移動され（図１（Ｂ）），その共振周波数の
値は上記した３９．２Ｈｚから３６．７Ｈｚの値へと変
化される（図２（Ｃ））。この３６．７Ｈｚの値は，当
初の設定共振周波数の値である３６．９Ｈｚの値とほぼ
等しい。これにより，当該振動抑制装置１においては，
環境温度が変化した場合でも，その共振周波数を常にほ
ぼ一定の値に保持することができ，常に安定した振動低
減効果を奏し得ることが明らかである。なお，本実施例
においては，２枚の鋼板を粘弾性体を挾んで層状に接合
して構成した場合を例に説明したが，上記鋼板の枚数や
粘弾性体の取り付け形状等については，適宜変更するこ
とが可能であるのはいうまでもない。A specific example of the vibration suppressing device 1 will be shown below. As shown in FIG. 1A, 141 m from the supporting portion 5 a
A weight 8 of 400 g is arranged at a position of m, and the resonance frequency thereof is set to 36.9 Hz under an ambient temperature of 20 ° C., for example (see FIG. 2A). If, for example, the weight 8 is assumed to be fixed at that position on the steel plate 3, the value of its resonance frequency is 39.2 Hz under an ambient temperature of 5 ° C. (FIG. 2 (B)).
reference). However, in the vibration suppressing device 1, due to the action of the shape memory alloy 9 accompanied by the temperature change, the weight 8 moves from the supporting portions 5 a to 147 m under the ambient temperature of 5 ° C.
It is moved to the position of m (FIG. 1 (B)), and the value of its resonance frequency is changed from the value of 39.2 Hz to the value of 36.7 Hz (FIG. 2 (C)). The value of 36.7 Hz is almost equal to the value of 36.9 Hz which is the value of the initially set resonance frequency. Thereby, in the vibration suppressing device 1,
It is clear that even when the environmental temperature changes, the resonance frequency can be maintained at a substantially constant value, and a stable vibration reduction effect can always be obtained. In addition, in the present embodiment, the case where two steel plates are joined by sandwiching the viscoelastic body in a layered manner is described as an example. However, the number of the steel plates and the mounting shape of the viscoelastic body are appropriately set. It goes without saying that it is possible to change.
【０００８】[0008]
【発明の効果】本発明は，上記したように，粘弾性体又
は粘性体を挾んで層状に接合された複数の板バネを被制
振対象物上に支持し，上記複数の板バネの自由端側に錘
を配備してなる振動抑制装置において，上記錘を上記複
数の板バネの自由端側と上記被制振対象物に対する支持
部近傍との間で移動可能に支持すると共に，温度変化の
度合に応じて当該振動抑制装置の共振周波数を補正する
方向へ該錘を移動させる移動機構を設けたことを特徴と
する振動抑制装置であるから，環境温度の変化に伴って
当該装置の共振周波数を自己補正することができ，常に
安定的に振動低減効果を奏することができる。As described above, the present invention supports a plurality of leaf springs, which are joined in a layered manner by sandwiching a viscoelastic body or a viscous body, on an object to be damped, and allows the plurality of leaf springs to move freely. In a vibration suppressing device having a weight on the end side, the weight is movably supported between the free end side of the plurality of leaf springs and the vicinity of a supporting portion for the object to be damped, and the temperature change is The vibration suppressing device is characterized by having a moving mechanism for moving the weight in a direction of correcting the resonance frequency of the vibration suppressing device according to the degree of The frequency can be self-corrected, and a stable vibration reduction effect can always be achieved.
【図１】 本発明の一実施例に係る振動抑制装置の側面
図。FIG. 1 is a side view of a vibration suppressing device according to an embodiment of the present invention.
【図２】 上記振動抑制装置の所定温度雰囲気下での動
特性を示すグラフ。FIG. 2 is a graph showing dynamic characteristics of the vibration suppressing device under a predetermined temperature atmosphere.
【図３】 従来の振動抑制装置の一例を示すものであっ
て，（Ａ）は正面図，（Ｂ）は側面図。3A and 3B show an example of a conventional vibration suppressing device, in which FIG. 3A is a front view and FIG. 3B is a side view.
１…振動抑制装置 ２…粘弾性樹脂 ３…鋼板（板バネ） ４…被制振対象物 ５…支持台 ５a …支持部 ８…錘 ９…形状記憶合金DESCRIPTION OF SYMBOLS 1 ... Vibration suppressor 2 ... Viscoelastic resin 3 ... Steel plate (leaf spring) 4 ... Object to be damped 5 ... Support stand 5a ... Support part 8 ... Weight 9 ... Shape memory alloy
Claims (1)
された複数の板バネを被制振対象物上に支持し，上記複
数の板バネの自由端側に錘を配備してなる振動抑制装置
において， 上記錘を上記複数の板バネの自由端側と上記被制振対象
物に対する支持部近傍との間で移動可能に支持すると共
に，温度変化の度合に応じて当該振動抑制装置の共振周
波数を補正する方向へ該錘を移動させる移動機構を設け
たことを特徴とする振動抑制装置。1. A viscoelastic body or a plurality of leaf springs sandwiching a viscous body and joined in layers are supported on an object to be damped, and a weight is provided on the free end side of the plurality of leaf springs. In a vibration suppressing device, the weight is movably supported between the free ends of the plurality of leaf springs and the vicinity of a supporting portion for the object to be damped, and the vibration suppressing device is provided according to the degree of temperature change. A vibration suppressing device comprising a moving mechanism for moving the weight in a direction to correct the resonance frequency of the.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20187691A JPH0544772A (en) | 1991-08-12 | 1991-08-12 | Vibration controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20187691A JPH0544772A (en) | 1991-08-12 | 1991-08-12 | Vibration controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0544772A true JPH0544772A (en) | 1993-02-23 |
Family
ID=16448337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20187691A Pending JPH0544772A (en) | 1991-08-12 | 1991-08-12 | Vibration controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0544772A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09119477A (en) * | 1995-10-27 | 1997-05-06 | Kazuto Sedo | Dynamic vibration absorber |
| JP2004257564A (en) * | 2004-04-05 | 2004-09-16 | Kazuto Sedo | Dynamic vibration absorber |
| JP2005344452A (en) * | 2004-06-07 | 2005-12-15 | Kanazawa Inst Of Technology | Vibration control device, vibration control method, and long-sized structure |
| JP2008101782A (en) * | 2008-01-07 | 2008-05-01 | Kazuto Sedo | Dynamic vibration absorber |
| JP2009091859A (en) * | 2007-10-12 | 2009-04-30 | Bridgestone Corp | Floor supporting device and floor structure |
| DE102010029910A1 (en) * | 2010-06-10 | 2011-12-15 | Bayerische Motoren Werke Aktiengesellschaft | Active oscillation damper for motor car, has single spring element units implemented in shape memory alloy of upper and lower spring elements |
| JP2014096951A (en) * | 2012-11-12 | 2014-05-22 | Mitsubishi Electric Corp | Rotary electric machine |
| WO2015112553A1 (en) * | 2014-01-25 | 2015-07-30 | Borgwarner Inc. | Rotary vibration absorber |
-
1991
- 1991-08-12 JP JP20187691A patent/JPH0544772A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09119477A (en) * | 1995-10-27 | 1997-05-06 | Kazuto Sedo | Dynamic vibration absorber |
| JP2004257564A (en) * | 2004-04-05 | 2004-09-16 | Kazuto Sedo | Dynamic vibration absorber |
| JP2005344452A (en) * | 2004-06-07 | 2005-12-15 | Kanazawa Inst Of Technology | Vibration control device, vibration control method, and long-sized structure |
| JP2009091859A (en) * | 2007-10-12 | 2009-04-30 | Bridgestone Corp | Floor supporting device and floor structure |
| JP2008101782A (en) * | 2008-01-07 | 2008-05-01 | Kazuto Sedo | Dynamic vibration absorber |
| DE102010029910A1 (en) * | 2010-06-10 | 2011-12-15 | Bayerische Motoren Werke Aktiengesellschaft | Active oscillation damper for motor car, has single spring element units implemented in shape memory alloy of upper and lower spring elements |
| JP2014096951A (en) * | 2012-11-12 | 2014-05-22 | Mitsubishi Electric Corp | Rotary electric machine |
| WO2015112553A1 (en) * | 2014-01-25 | 2015-07-30 | Borgwarner Inc. | Rotary vibration absorber |
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