JPH028530A - Multi-stage vibration removing device - Google Patents
Multi-stage vibration removing deviceInfo
- Publication number
- JPH028530A JPH028530A JP15672588A JP15672588A JPH028530A JP H028530 A JPH028530 A JP H028530A JP 15672588 A JP15672588 A JP 15672588A JP 15672588 A JP15672588 A JP 15672588A JP H028530 A JPH028530 A JP H028530A
- Authority
- JP
- Japan
- Prior art keywords
- vibration
- isolating
- floor
- quake
- vibro
- 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
- 238000002955 isolation Methods 0.000 claims description 34
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/046—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means using combinations of springs of different kinds
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Building Environments (AREA)
- Vibration Prevention Devices (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は超精密な嫌振性の機器、例えば電子顕微鏡や医
療施設（手術台、分析台）等を設置するのに適した除振
装置に関する。[Detailed Description of the Invention] (Industrial Application Field) The present invention is a vibration isolator suitable for installing ultra-precise anti-vibration equipment, such as electron microscopes and medical facilities (operating tables, analysis tables), etc. Regarding.
（従来の技術）
従来、建物内の設備に微振動が伝わらないようにする方
法としては、杭や地中振動新壁に入力損失理論を積極的
に採用して、建物底盤からの振動入力を防ぎ、更に除振
台あるいは除振設備を使用していた。(Conventional technology) Conventionally, as a method to prevent minute vibrations from being transmitted to equipment inside a building, input loss theory has been actively applied to piles and new underground vibration walls to reduce vibration input from the building's base. In addition, vibration isolation tables or vibration isolation equipment were used.
また今日、免震ビルの積層ゴムも地盤からの振動を除く
性質があることが確かめられ、建物全体の除振装置とし
て注目されて来た。Furthermore, it has been confirmed that the laminated rubber used in seismically isolated buildings has the ability to eliminate vibrations from the ground, and has attracted attention as a vibration isolator for entire buildings.
（発明が解決しようとする課題）
しかし、ある種の計測器では人体にも感じ難い程のわず
かな振動すらも妨害振動になる場合があり、多くの妨害
振動は、その振動周波数スペクトルが広域に及び、その
振動モードも単軸方向だけではなく、３次元方向におよ
んでいるのが普通であり、従来のように建物自体を免震
構造とする場合や建物の床レベルだけの除振ないし免震
では必要充分な効果が得られていなかった。(Problem to be solved by the invention) However, in some types of measuring instruments, even slight vibrations that are barely perceptible to the human body can become disturbing vibrations, and many disturbing vibrations have a wide vibration frequency spectrum. In addition, the vibration mode is usually not limited to a single axis direction, but also extends to three-dimensional directions, and when the building itself has a seismic isolation structure as in the past, or vibration isolation or isolation only at the floor level of the building. The earthquake did not have the necessary and sufficient effect.
本発明は上記事情に鑑みてなされたものであって、その
目的は３次元方向に及ぶ微振動も含めて広範囲な振動周
波数に効果のある多段式除振装置を提供するにある。The present invention has been made in view of the above circumstances, and its purpose is to provide a multi-stage vibration isolator that is effective against a wide range of vibration frequencies, including micro vibrations extending in three-dimensional directions.
（課題を解決するための手段）
上記目的を達成するために、本発明の多段式除振装置は
、上下方向に複数段の床を各々免震、除振装置を介して
支承するものである。(Means for Solving the Problems) In order to achieve the above object, the multi-stage vibration isolator of the present invention supports a plurality of floors in the vertical direction through respective seismic isolation and vibration isolators. .
（作 用）
水平方向と上下方向及びこれらを複合する３次元方向の
振動に対応できるように、免震、除振装置を多段に組合
せた結果、各段毎に振動周波数や振動モードに差が生じ
ても、それぞれの振動を各段とその協動で効率よく減衰
消滅させる。(Function) As a result of combining seismic isolation and vibration isolation devices in multiple stages to cope with vibrations in the horizontal direction, vertical direction, and a combination of these three-dimensional directions, there are differences in vibration frequency and vibration mode for each stage. Even if vibrations occur, each stage and its cooperation efficiently attenuate and eliminate each vibration.
（実 施 例）
以下、本発明の好適な実施例について、図面を参照にし
て詳細に説明する。(Embodiments) Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
第１図に免震積層ゴム支承１を免震ビル２に適用した場
合を示す。従って床スラブ３の段階で、既に地震力のよ
うな高レベルの振動は長周期化されている。Figure 1 shows the case where the seismic isolation laminated rubber bearing 1 is applied to a seismic isolation building 2. Therefore, at the stage of the floor slab 3, high-level vibrations such as seismic force have already been made to have a long period.
そして更に、上記床スラブ３の上に各々空気バネなどの
除振装置（以下空気バネという）４−４ａを介して除振
床５、除振台６（除振床でも可）が上下に重ねて配置し
である。Furthermore, a vibration isolating floor 5 and a vibration isolating table 6 (a vibration isolating floor may also be used) are stacked one above the other on the floor slab 3 via vibration isolating devices such as air springs (hereinafter referred to as air springs) 4-4a. It is arranged as follows.
超精密な嫌振性の機器、例えば透過型の電子顕微鏡のよ
うな設備７を除振台６に設置するのである。Ultra-precise anti-vibration equipment, such as equipment 7 such as a transmission electron microscope, is installed on the vibration isolation table 6.
すなわち、地盤の振動を免震ビル２で除き、次に床スラ
ブ３の振動を空気バネ４で支承した除振床５のレベルで
除振し、更に除振台６の振動については空気バネ４ａで
支承して３回目の除振を行っている。That is, the vibration of the ground is removed by the seismic isolation building 2, the vibration of the floor slab 3 is then removed at the level of the vibration isolation floor 5 supported by the air springs 4, and the vibration of the vibration isolation table 6 is further removed by the air spring 4a. The third vibration isolation was carried out by supporting the structure.
一般に除振効果は振動の伝達率で説明され、この伝達率
は入力変位と出力変位との比である。Generally, the vibration isolation effect is explained by the vibration transmissibility, and this transmissibility is the ratio of input displacement to output displacement.
また、個々の積層ゴム支承１や空気バネ４−４ａの除振
特性は対振動周波数に対応して異なるようにする場合も
あり、除振効果は振動伝達関数で評価している。Further, the vibration isolation characteristics of the individual laminated rubber bearings 1 and air springs 4-4a may be made to differ depending on the vibration frequency, and the vibration isolation effect is evaluated using a vibration transfer function.
この伝達関数で評価するならば、除振床５も除振台６も
振動特性を同じくする空気バネ４−４ａで支承しである
から振動特性をほぼ同じくしながらも伝達率は著しく小
さくすることができる。したがって、空気バネ４−４ａ
を夫々別の特性のものとすることも自由である。第２図
に伝達関数の曲線を示し、横軸に振動数（ｃ／５ｅｅ）
、縦軸に伝達率をとっている。If evaluated using this transfer function, since both the vibration isolating floor 5 and the vibration isolating table 6 are supported by air springs 4-4a with the same vibration characteristics, it is possible to significantly reduce the transmission rate even though the vibration characteristics are almost the same. I can do it. Therefore, the air spring 4-4a
It is also free to have different characteristics for each. Figure 2 shows the transfer function curve, with the horizontal axis representing the frequency (c/5ee).
, the transmissibility is plotted on the vertical axis.
除振床５を振動数０．３〜０．５Ｈｚの免震装置で支承
し、伝達関数χを得る。次に振動数１．５Ｈｚ前後の免
震装置で除振台６を支承し、その伝達関数ａχを得、両
方の除振作用が相俟って除振台６の伝達関数ｙが得られ
ている。The vibration isolation floor 5 is supported by a seismic isolation device with a frequency of 0.3 to 0.5 Hz, and a transfer function χ is obtained. Next, the vibration isolation table 6 is supported by a seismic isolation device with a vibration frequency of around 1.5 Hz, and its transfer function aχ is obtained, and the transfer function y of the vibration isolation table 6 is obtained by the combination of both vibration isolation actions. There is.
なお、免震、除振装置は空気バネに限らず、振動数を異
にする積層ゴムあるいは防振ゴム等でもよい。また、免
震ビル２ではなく、通常のビルの場合には除振床５を更
にもう一段増設すればよい。Note that the seismic isolation and vibration isolating device is not limited to air springs, but may also be laminated rubber or vibration isolating rubber with different vibration frequencies. Further, in the case of a normal building instead of the seismic isolation building 2, one more stage of vibration isolation floor 5 may be added.
（効 果）
以上詳しく述べたように、本発明の多段式除振装置によ
れば、免震、除振装置を介して支承した床を上下方向に
積み重ねた多段構造としているので、各段毎に適宜に異
なる振動特性の免震、除振装置で支承するなど、種々の
装置を組み合せて環境雰囲気に合う最も効率的な除振を
行うことができる。(Effects) As described in detail above, the multi-stage vibration isolator of the present invention has a multi-stage structure in which the floors supported through the seismic isolation and vibration isolators are stacked vertically, so that each stage The most efficient vibration isolation that matches the environmental atmosphere can be achieved by combining various devices, such as supporting with base isolation and vibration isolating devices that have different vibration characteristics as appropriate.
第１図は本発明の実施例を示す一部破断の断面図、第２
図は除振範囲と効果を示す線図。
５・・・・・・除振床
７・・・・・・設 備
６・・・・・・除振台FIG. 1 is a partially broken sectional view showing an embodiment of the present invention, and FIG.
The figure is a diagram showing the vibration isolation range and effects. 5... Vibration isolation floor 7... Equipment 6... Vibration isolation table
Claims (1)
して支承することを特徴とした多段式除振装置。(1) A multi-stage vibration isolator characterized in that a plurality of floors in the vertical direction are each supported via a seismic isolation and vibration isolator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15672588A JPH028530A (en) | 1988-06-27 | 1988-06-27 | Multi-stage vibration removing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15672588A JPH028530A (en) | 1988-06-27 | 1988-06-27 | Multi-stage vibration removing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH028530A true JPH028530A (en) | 1990-01-12 |
Family
ID=15633967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15672588A Pending JPH028530A (en) | 1988-06-27 | 1988-06-27 | Multi-stage vibration removing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH028530A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61116142A (en) * | 1984-11-09 | 1986-06-03 | Hitachi Plant Eng & Constr Co Ltd | Quake-free and vibro-isolating structure |
-
1988
- 1988-06-27 JP JP15672588A patent/JPH028530A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61116142A (en) * | 1984-11-09 | 1986-06-03 | Hitachi Plant Eng & Constr Co Ltd | Quake-free and vibro-isolating structure |
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