JPH02278033A - Vibration isolating tank - Google Patents
Vibration isolating tankInfo
- Publication number
- JPH02278033A JPH02278033A JP9855289A JP9855289A JPH02278033A JP H02278033 A JPH02278033 A JP H02278033A JP 9855289 A JP9855289 A JP 9855289A JP 9855289 A JP9855289 A JP 9855289A JP H02278033 A JPH02278033 A JP H02278033A
- Authority
- JP
- Japan
- Prior art keywords
- tank
- air
- air chambers
- liquid
- partition walls
- 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.)
- Granted
Links
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 238000005192 partition Methods 0.000 claims abstract description 13
- 239000003638 chemical reducing agent Substances 0.000 abstract 2
- 238000010276 construction Methods 0.000 abstract 2
- 239000006096 absorbing agent Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000005284 excitation Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Bridges Or Land Bridges (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (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、船舶の上部構造物などの振動の防止や、橋梁
、高層建築など陸上構造物の振動の防止に適用される防
振タンクに関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a vibration isolation tank that is applied to prevent vibrations in superstructures of ships, etc., and to prevent vibrations in land structures such as bridges and high-rise buildings. .
従来から構造物の防振手段の１つとして、動吸振器が知
られている。動吸振器の基本的な構成は第４図に示すよ
うになっており、振動子〈１０〉がばね（１１）を介し
支持台（１２）に支持されて、その固有振動数は、振動
子（１０）の’ｉ、ｉとばね（１１）の剛性とで決まる
。Dynamic vibration absorbers have been known as one type of vibration isolating means for structures. The basic configuration of a dynamic vibration absorber is shown in Figure 4, in which a vibrator (10) is supported by a support base (12) via a spring (11), and its natural frequency is equal to that of the vibrator. It is determined by 'i, i in (10) and the stiffness of the spring (11).
振動子（１０）の質量とばね（１１）の剛性とを適当に
選んで動吸振器の固有振動数を起振力の振動数（Ｎ８）
に一致させると、第３図に示すように、動吸振器の作用
によって構造物の振動は実線（８）で示す特性から破線
（９）で示す特性のようになり、振動低減効果が得られ
るが、以下の問題点が残っている。By appropriately selecting the mass of the vibrator (10) and the rigidity of the spring (11), the natural frequency of the dynamic vibration absorber is set to the frequency of the excitation force (N8).
As shown in Figure 3, due to the action of the dynamic vibration absorber, the vibration of the structure changes from the characteristic shown by the solid line (8) to the characteristic shown by the broken line (9), and a vibration reduction effect is obtained. However, the following problems remain.
（ａ＞振動子の振幅が大きくなり、ばねの強度上の不安
がある。(a> The amplitude of the vibrator becomes large, and there is concern about the strength of the spring.
（ｂ）大形の動吸振器は、ばね機構の設計、製作が難し
い。(b) It is difficult to design and manufacture a spring mechanism for large dynamic vibration absorbers.
（ｃ）振動数の調整には、振動子の質量やぼね剛性を変
える必要があり、特に大形のものでは簡単に行なえない
。(c) Adjustment of the vibration frequency requires changing the mass and spring stiffness of the vibrator, which is not easy to do especially with large vibrators.
本発明は、前述の問題点を解決するため、Ｕ字形連通タ
ンクを用い、振動子として左右の竪形りンクの相互間を
流通しうる液体を利用し、ばねとして上記竪形タンク内
の空気室の空気弾性を利用する。更に空気室を複数個に
分割する仕切壁を設け、仕切壁に開閉自在の開口を備え
る。上記液体の自由表面の上下動によって、上記空気室
の空気が圧縮、膨張してばねとなる。このばねの剛性は
、空気室の容積と圧力とによって調整できる。また上述
のごとく液体を振動子とすることによって、特別な支持
機構を必要とせず、大型化にも容易に対応できるととも
に、ばね強度の問題や、振動数調整の困難が解消される
。In order to solve the above-mentioned problems, the present invention uses a U-shaped communication tank, uses liquid that can flow between the left and right vertical links as a vibrator, and uses the air in the vertical tank as a spring. Utilizes the air elasticity of the chamber. Furthermore, a partition wall that divides the air chamber into a plurality of parts is provided, and the partition wall is provided with an opening that can be opened and closed. The vertical movement of the free surface of the liquid compresses and expands the air in the air chamber to form a spring. The stiffness of this spring can be adjusted by adjusting the volume and pressure of the air chamber. Furthermore, by using a liquid as the vibrator as described above, a special support mechanism is not required, it is possible to easily cope with an increase in size, and the problem of spring strength and difficulty in frequency adjustment are solved.
タンク内の液体の左右振動に対して、左右竪形タンクの
空気室の空気は弾性ばねとして作用し、これにより振動
系が構成される。空気室の容積や圧力を選んでタンク内
の液体の振動数を起振力の振動数に合せると、動吸振器
の作用が得られる。The air in the air chambers of the left and right vertical tanks acts as an elastic spring against the left and right vibrations of the liquid in the tank, thereby forming a vibration system. By selecting the volume and pressure of the air chamber and matching the frequency of the liquid in the tank to the frequency of the excitation force, the action of a dynamic vibration absorber can be obtained.
第１図にＵ字形達通タンクの断面を示す、このタンク（
１）の左右に竪形タンク（２ｍ＞、 （２ｂ）がある、
タンク〈１）の内部には液体（３）が収容され、竪形タ
ンク（２ｍ）、 （２ｂ）の上部には空気室（４ａ）、
（４ｂ）が形成される。Figure 1 shows the cross section of the U-shaped tank (
1) There is a vertical tank (2m>, (2b)) on the left and right,
A liquid (3) is stored inside the tank (1), a vertical tank (2m), an air chamber (4a) at the top of (2b),
(4b) is formed.
そして、空気室ｃ４ｍ＞、 （４ｂ）の内部に仕切壁（
５ｍ）、 （５ｂ）が設けられて、各仕切壁（５ａ）。Then, inside the air chamber c4m>, (4b) there is a partition wall (
5m), (5b) are provided, and each partition wall (5a).
（５ｂ）には、バタフライバルブ（８ｍ） 、 （８ｂ
）などを装着された開閉自在の開口（６ｍ）、 （６ｂ
）が形成される。(5b) has a butterfly valve (8m), (8b
) etc., which can be opened and closed freely (6m), (6b
) is formed.
液体（３）は図示しない給排水管でタンク静止時の液面
レベルを調整される。また空気室（４ａ）。The level of the liquid (3) when the tank is stationary is adjusted through a water supply and drainage pipe (not shown). Also an air chamber (4a).
（４ｂ）の内部静圧力は、給排気管（７ａ）、（７ｂ）
を介して、図示しない圧力源で調整される。The internal static pressure of (4b) is the same as that of the supply and exhaust pipes (7a) and (7b).
is regulated by a pressure source (not shown).
タンク内液体（３）が左右矢印方向に振動すると、竪形
タンク（２ｍ＞、 （２ｂ）における液体３の自由表面
は上下矢印方向に振動し、空気室（４ａ） 。When the liquid (3) in the tank vibrates in the left and right arrow directions, the free surface of the liquid 3 in the vertical tank (2m>, (2b) vibrates in the up and down arrow directions, causing an air chamber (4a).
（４ｂ）の空気を圧縮膨張させるので、空気室（４ａ）
、 （４ｂ）は空気ばねとして作用する。また、仕切壁
の開口（６ｍ）、 （６ｂ）の状態く全開又は全閉）に
よって空気室の容積が異なるので、空気ばねの剛性を開
口（６ａ）、 （６ｂ）におけるバルブ（８ｍ）、 ＜
８ｈ）の開閉操作によって選べば、第２図に示すように
振動数の調整範囲を広くすることができる。Since the air in (4b) is compressed and expanded, the air chamber (4a)
, (4b) acts as an air spring. In addition, since the volume of the air chamber differs depending on the opening (6 m) and (6b) of the partition wall (fully open or fully closed), the stiffness of the air spring is calculated as follows:
8h), the frequency adjustment range can be widened as shown in FIG.
前述した連通タンクの内部液体の左右振動の固有振動数
は、液量、空気室静圧力および空気室容積で決定される
。これらを所要量に選んで、所要の振動数に調整して防
振しようとする構造物に据付ければ、動吸振器として作
用して、構造物の水平振動を低減する効果が得られる。The natural frequency of the left-right vibration of the internal liquid in the communication tank described above is determined by the liquid volume, the air chamber static pressure, and the air chamber volume. If these are selected in the required amount, adjusted to the required vibration frequency, and installed in a structure to be vibration-isolated, it will act as a dynamic vibration absorber and have the effect of reducing the horizontal vibration of the structure.
本発明の防振タンクは、極めて簡素な構造で、大型動吸
振器の実用化を可能とする。The vibration isolating tank of the present invention has an extremely simple structure and enables practical use of a large dynamic vibration absorber.
第１図は本発明の一実施例としての防振タンクの横断面
図、第２図は北記防振タンクの振動数と空気室静圧力と
の関係を示すグラフであり、第３図は動吸振器の作用を
説明するグラフであり、第４図は従来の動吸振器の構成
を示す模式図である。
１・・・Ｕ字形連通タンク、２ａ、 ２ｂ・・・竪形タ
ンク、３・・・タンク内液体、４ａ、 ４ｂ・・・空気
室、５ｍ、 ５ｂ・・仕切壁、６ａ、 ６ｂ・・・開口
、７ａ、 ７ｂ・・・給排気管、８・・・構造物の振動
応答曲線、８ａ、８ｂ・・・バルブ、９・・・動吸振器
付き構造物の振動曲線、１ｏ・・・振動子、１１・・・
ばね、
１２・・・支持台。
代理人 弁理士 飯 沼 義 彦
第
図
第
図
會
空気Ｔ社五カ
第
図
Ｒ
徘ｊｐ数
第
図FIG. 1 is a cross-sectional view of a vibration isolation tank as an embodiment of the present invention, FIG. 2 is a graph showing the relationship between the vibration frequency of the Kitaki vibration isolation tank and the static pressure in the air chamber, and FIG. It is a graph explaining the action of a dynamic vibration absorber, and FIG. 4 is a schematic diagram showing the configuration of a conventional dynamic vibration absorber. 1... U-shaped communication tank, 2a, 2b... Vertical tank, 3... Liquid in tank, 4a, 4b... Air chamber, 5m, 5b... Partition wall, 6a, 6b... Openings, 7a, 7b... Supply and exhaust pipes, 8... Vibration response curve of structure, 8a, 8b... Valves, 9... Vibration curve of structure with dynamic vibration absorber, 1o... Vibration Child, 11...
Spring, 12...Support stand. Agent: Yoshihiko Iinuma, Patent Attorney
Claims (1)
それぞれ空気室を残して液体が収容されるとともに、上
記空気室を更に複数個の空気室に分割する仕切壁と、同
仕切壁に形成された開口を開閉しうるバルブとが設けら
れたことを特徴とする、防振タンク。In the U-shaped communication tank, liquid is stored in the left and right vertical tanks, leaving air chambers at the top of each tank, and a partition wall that further divides the air chamber into a plurality of air chambers, and a partition wall formed on the partition wall. A vibration-proof tank characterized by being provided with a valve that can open and close an opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9855289A JPH07113393B2 (en) | 1989-04-18 | 1989-04-18 | Anti-vibration tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9855289A JPH07113393B2 (en) | 1989-04-18 | 1989-04-18 | Anti-vibration tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02278033A true JPH02278033A (en) | 1990-11-14 |
| JPH07113393B2 JPH07113393B2 (en) | 1995-12-06 |
Family
ID=14222853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9855289A Expired - Fee Related JPH07113393B2 (en) | 1989-04-18 | 1989-04-18 | Anti-vibration tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07113393B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009043547A1 (en) * | 2007-09-27 | 2009-04-09 | Bernard Ingenieure Zt Gmbh | Liquid damper for reducing vertical and/or horizontal vibrations in a building or machine structure |
| EP3589793A4 (en) * | 2017-02-28 | 2020-06-17 | Hummingbird Kinetics LLC | Tuned liquid damper with a membrane liquid-gas interface |
-
1989
- 1989-04-18 JP JP9855289A patent/JPH07113393B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009043547A1 (en) * | 2007-09-27 | 2009-04-09 | Bernard Ingenieure Zt Gmbh | Liquid damper for reducing vertical and/or horizontal vibrations in a building or machine structure |
| JP2010540854A (en) * | 2007-09-27 | 2010-12-24 | ベルナルト・インジェニエーレ・ツェットテー・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング | Liquid vibration control device |
| AU2008306161B2 (en) * | 2007-09-27 | 2012-02-16 | Innova Patent Gmbh | Liquid damper for reducing vertical and/or horizontal vibrations in a building or machine structure |
| RU2474738C2 (en) * | 2007-09-27 | 2013-02-10 | Бернард Инженере Цт Гмбх | Hydraulic damper for reduction of vertical and/or horizontal vibrations of facility or mechanism structure |
| EP3589793A4 (en) * | 2017-02-28 | 2020-06-17 | Hummingbird Kinetics LLC | Tuned liquid damper with a membrane liquid-gas interface |
| US11629518B2 (en) | 2017-02-28 | 2023-04-18 | Hummingbird Kinetics LLC | Tuned liquid damper with a membrane liquid-gas interface |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07113393B2 (en) | 1995-12-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |