JPH0266337A - Dynamic vibration absorbing device - Google Patents
Dynamic vibration absorbing deviceInfo
- Publication number
- JPH0266337A JPH0266337A JP63217577A JP21757788A JPH0266337A JP H0266337 A JPH0266337 A JP H0266337A JP 63217577 A JP63217577 A JP 63217577A JP 21757788 A JP21757788 A JP 21757788A JP H0266337 A JPH0266337 A JP H0266337A
- Authority
- JP
- Japan
- Prior art keywords
- vibration
- tension
- spring
- frame body
- dynamic vibration
- 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
- 239000006096 absorbing agent Substances 0.000 claims description 15
- 238000010521 absorption reaction Methods 0.000 claims description 12
- 238000013016 damping Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process 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
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/10—Vibration-dampers; Shock-absorbers using inertia effect
- F16F7/104—Vibration-dampers; Shock-absorbers using inertia effect the inertia member being resiliently mounted
- F16F7/116—Vibration-dampers; Shock-absorbers using inertia effect the inertia member being resiliently mounted on metal springs
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Supports For Pipes And Cables (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、配管系等の振動を吸収して抑制するだめの装
置に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a device for absorbing and suppressing vibrations in piping systems and the like.
（従来の技術）
従来各種の吸振装置が提案されているが、何れもその固
有振動数を容易に変更することができないものである。(Prior Art) Various vibration absorbing devices have been proposed in the past, but the natural frequency of none of them cannot be easily changed.
従って、吸振対象の固有振動数を予め算出しておき、こ
れに対応して吸振装置は、工場において製作時に吸振対
象と共振を生じない固有振動数に設定しておく必要があ
る。ところが。Therefore, it is necessary to calculate the natural frequency of the vibration absorbing object in advance, and correspondingly set the vibration absorbing device at a factory to a natural frequency that does not cause resonance with the vibration absorbing object at the time of manufacture. However.
配管系等の吸振対象は、設置に当って、支持装置の追加
的取付は等の設計変更を余儀無くされることがある。こ
のため、吸振対象の固有振動数は。When installing a vibration absorbing object such as a piping system, it may be necessary to make design changes such as additional installation of a support device. Therefore, the natural frequency of the vibration absorption target is.
変動を生じる可能性がある。また、算出された固有振動
数と実際のそれとの間に誤差が生じることもある。この
ような場合に、従来の吸振装置は固有振動数の変更が容
易でないから、現場で柔軟に対応することができない。Variations may occur. Furthermore, an error may occur between the calculated natural frequency and the actual frequency. In such a case, it is not easy to change the natural frequency of conventional vibration absorbers, so it is not possible to respond flexibly on site.
吸振対象の増設、延長等を行なう場合も同様である。The same applies when adding or extending the vibration absorption target.
（発明が解決しようとする課題）
本発明は、吸振対象の固有振動数に対応して容易に固有
振動数を変更することができ、従って。(Problems to be Solved by the Invention) According to the present invention, the natural frequency can be easily changed in accordance with the natural frequency of the vibration absorption target.
吸振対象系とポンプ等との間の共振をなくして有効な制
振作用を行なうことができる堅牢でコンパクトな吸振装
置を提供することを課題としている。The object of the present invention is to provide a robust and compact vibration absorbing device that can eliminate resonance between a vibration absorbing target system and a pump, etc., and perform effective vibration damping.
（課題を解決するための手段）
本発明においては、上記課題を解決するため、配管Ｐの
ような吸振対象に固定されるケース３のような枠体と、
この枠体に架設され、吸振対象の振動を受けて振動可能
なばね捧４．支持棒１４、ばね板２４のような支持部材
と、枠、体内において支持部材上に設けられた重錘５，
１５．２５と。(Means for Solving the Problems) In the present invention, in order to solve the above problems, a frame body such as the case 3 fixed to a vibration absorption target such as the pipe P,
4. A spring rod installed on this frame and capable of vibrating in response to the vibration of the object to be absorbed. A support member such as a support rod 14 and a spring plate 24, a frame, and a weight 5 provided on the support member within the body.
15.25.
前記支持部材の中間部をそれの軸線直交方向に弾性的に
押圧して支持部材の張力を調整することができるように
枠体に取付けられた調整ねじ９と押しばね８のような張
力調整手段とを具備させて動吸振装置を構成した。Tension adjustment means such as an adjustment screw 9 and a push spring 8 attached to the frame body so as to elastically press the intermediate portion of the support member in a direction perpendicular to the axis of the support member to adjust the tension of the support member. A dynamic vibration damping device was constructed.
（作 用）
本発明の動吸振装置は、吸振対象に振動が加わった場合
、重錘５，１５．２５の慣性により、ばね捧４、支持棒
１４、ばね板２４のような支持部材が吸振対象に対して
相対的に振動し、ダイナミックダンパの原理で吸振対象
の振動を抑制する。(Function) In the dynamic vibration absorbing device of the present invention, when vibration is applied to the object to be vibration-absorbed, the inertia of the weights 5 and 15.25 causes the support members such as the spring supports 4, the support rods 14, and the spring plates 24 to absorb the vibrations. It vibrates relative to the target, and uses the principle of a dynamic damper to suppress the vibration of the target.
この動吸振装置の固有振動数決定の要素としては。What are the elements for determining the natural frequency of this dynamic vibration absorber?
支持部材の剛性またはその張力が重要であり、本発明に
おいては、このうち支持部材の張力を張力調整手段によ
って変更し、現場での設置時等に任意の固有振動数を選
択する。こうすれば吸振対象系とポンプ等の振動源との
共振を容易に回避することができる。The rigidity of the support member or its tension is important, and in the present invention, the tension of the support member is changed by a tension adjustment means, and an arbitrary natural frequency is selected during installation on site. In this way, resonance between the vibration absorption target system and the vibration source such as a pump can be easily avoided.
（実施例） 第１図乃至第２図に本発明の一実施例を示す。(Example) An embodiment of the present invention is shown in FIGS. 1 and 2.
第１図は動吸振装置の縦断正面図、第２図は第１図■−
■断面図、第３図は動吸振装置の原理図である。Figure 1 is a longitudinal sectional front view of the dynamic vibration absorber, Figure 2 is Figure 1 -
②Cross-sectional view, Figure 3 is a diagram showing the principle of the dynamic vibration absorber.
第１図乃至第３図において、１は動吸振装置、Ｐは吸振
対象である配管であり、２は動吸振装置１を配管Ｐに固
定するためのバンドである。In FIGS. 1 to 3, numeral 1 is a dynamic vibration absorber, P is a pipe that is the object of vibration absorption, and 2 is a band for fixing the dynamic vibration absorber 1 to the pipe P.
動吸振装置１は、全体を支持する枠体であるケース３と
、ケース３に架設された振動可能なばね捧４と、このば
ね棒４上に固定された重錘５と、ばね棒の張力を調整す
るための調整手段であるばね８とねじ９とを備えている
。The dynamic vibration absorbing device 1 includes a case 3 that is a frame that supports the whole, a spring support 4 that can vibrate installed on the case 3, a weight 5 fixed on the spring rod 4, and a tension force of the spring rod. It is provided with a spring 8 and a screw 9, which are adjustment means for adjusting.
ケース３は、角筒状で、両端蓋３ａ、３ｂを貫通してば
ね捧４が架設されている。ばね捧４は、配管Ｐの軸線に
対して直交する方向に架設され。The case 3 has a rectangular cylindrical shape, and has a spring support 4 extending through the lids 3a and 3b at both ends. The spring support 4 is installed in a direction perpendicular to the axis of the pipe P.
またケース３内において重錘５を備えている。ばね棒４
の両端部にはねじを備え、夫々皿ばね６を介してナツト
７でケース３の蓋３ａ、３ｂに固定されている。A weight 5 is also provided inside the case 3. Spring bar 4
are provided with screws at both ends, and are fixed to the lids 3a, 3b of the case 3 with nuts 7 via disc springs 6, respectively.
調整手段は、枠体３に螺合された調整ねじ９と、この調
整ねじ９と重錘５との間に介設された押しばね８とから
成り、調整ねじ９の進退によってばね８の押圧力を加減
することで、ばね棒４の張力を加減することができるよ
うになっている。The adjustment means consists of an adjustment screw 9 screwed into the frame 3 and a push spring 8 interposed between the adjustment screw 9 and the weight 5. The spring 8 is pushed by moving the adjustment screw 9 back and forth. By adjusting the pressure, the tension of the spring bar 4 can be adjusted.
なお、１０はケース３と配管Ｐとの間に介設されたサド
ルである。Note that 10 is a saddle interposed between the case 3 and the pipe P.
この動吸振装置１の原理は第３図に示すとおりであり、
その固有振動数ω。は下式で求められる。The principle of this dynamic vibration absorber 1 is as shown in FIG.
Its natural frequency ω. is calculated using the formula below.
（１１、＝ ＪＴ”７；； （Ｋ ：ばね定数、ｒａ
二重錘質量）但し、Ｋ＝＋８ＥＴ／（１）３＋２Ｆ／１
ｌｌ＝６ＥＩ／ Ｑ ３＋２Ｆ／ Ｑ
（Ｅ：縦断面係数、工：断面二次モー−メント、Ｆ：張
力）
固有振動数決定の要素としては、ばね捧４の剛性または
それの張力（Ｆ）とが重要である。従って、調整ねじ９
の押圧力を加減することで、ばね棒４の張力を加減し、
動吸振装置１の固有振動数を所定範囲で移動することが
できる。(11, = JT”7;; (K: spring constant, ra
(Double weight mass) However, K=+8ET/(1)3+2F/1
ll=6EI/Q 3+2F/Q (E: longitudinal section modulus, engineering: second moment of area, F: tension) The elements for determining the natural frequency are the stiffness of the spring 4 or its tension (F) and is important. Therefore, the adjustment screw 9
By adjusting the pressing force of the spring bar 4, the tension of the spring bar 4 can be adjusted.
The natural frequency of the dynamic vibration absorber 1 can be moved within a predetermined range.
第４図には本発明の他の実施例の動吸振装置１１を示し
た。なお、第４図において、第１図乃至第３図における
ものと同等の構成部には同一の符号を付して説明を省略
する。この実施例においては、重錘１５の両側で２つに
分割された支持棒１４ａと１４ｂが用いられている。な
お、図示しないが、重［１５の両側に２つ以上の支持棒
を設け。FIG. 4 shows a dynamic vibration damping device 11 according to another embodiment of the present invention. In FIG. 4, the same components as those in FIGS. 1 to 3 are denoted by the same reference numerals, and the explanation thereof will be omitted. In this embodiment, two support rods 14a and 14b are used on both sides of the weight 15. Although not shown, two or more support rods are provided on both sides of the weight [15].
これらを先のものと同様に互いに反対方向へ引きあうよ
うにすることができる。These can be made to attract each other in opposite directions as before.
この場合には、支持棒１４ａと１４ｂが揺動するから、
それらの張力（Ｆ）が固有振動数決定の要素となる。In this case, since the support rods 14a and 14b swing,
These tensions (F) are the factors for determining the natural frequency.
第５図には本発明の他の実施例の動吸振装置２１を示し
た。なお、第５図において、第１図乃至第３図における
ものと同等の構成部には同一の符号を付して説明を省略
する。この実施例においては、ばね棒に代わって板ばね
２４が架設されている。即ち、板ばね２４は、適度に湾
曲させた状態で、両端においてケース２３に固着されて
いる。FIG. 5 shows a dynamic vibration damping device 21 according to another embodiment of the present invention. In FIG. 5, the same components as those in FIGS. 1 to 3 are denoted by the same reference numerals, and the explanation thereof will be omitted. In this embodiment, a leaf spring 24 is installed instead of the spring bar. That is, the leaf spring 24 is fixed to the case 23 at both ends in an appropriately curved state.
そして、重錘２５は板ばね２４上に載置され、押しばね
８を介して調整ねじ９によって押えられている。The weight 25 is placed on the leaf spring 24 and is pressed down by the adjustment screw 9 via the push spring 8.
図示しないが、上記何れの実施例においても、ばね棒４
．支持棒１４乃至板ばね２４の途上に屈曲部を形成し、
この屈曲部の伸縮により、ばね棒４、支持棒１４乃至板
ばね２４の張力の調整をより細かく行なうようにするこ
とができる。Although not shown, in any of the above embodiments, the spring rod 4
．． A bent part is formed in the middle of the support rod 14 to the leaf spring 24,
By expanding and contracting this bent portion, the tension of the spring bar 4, the support bar 14, and the leaf spring 24 can be adjusted more precisely.
（発明の効果）
以上のように本発明においては、配管Ｐのような吸振対
象に固定されるケース３のような枠体と、この枠体に架
設され、吸振対象の振動を受けて振動可能なばね棒４．
支持棒１４、ばね板２４のような支持部材と、枠体内に
おいて支持部材上に設けられた重錘５，１５．２５と、
前記支持部材の中間部をそれの軸線直交方向に弾性的に
押圧して支持部材の張力を調整することができるように
枠体に取付けられた調整ねじ９と押しばね８のような張
力調整手段とを具備させて動吸振装置を構成したため、
吸振対象の固有振動数に対応して、容易に固有振動数を
変更することができ、従って、吸振対象系とポンプのよ
うな振動源との間の共振をなくして有効な制振作用を行
なう吸振装置を提供することができるという効果を奏す
る。(Effects of the Invention) As described above, the present invention includes a frame body such as the case 3 fixed to a vibration absorption target such as the pipe P, and a frame body installed on this frame body and capable of vibrating in response to the vibration of the vibration absorption target. Spring bar 4.
Support members such as the support rod 14 and the spring plate 24, and the weights 5, 15, 25 provided on the support members within the frame body;
Tension adjustment means such as an adjustment screw 9 and a push spring 8 attached to the frame body so as to elastically press the intermediate portion of the support member in a direction perpendicular to the axis of the support member to adjust the tension of the support member. Since the dynamic vibration damping device is equipped with
The natural frequency can be easily changed in accordance with the natural frequency of the vibration absorption target, thus eliminating resonance between the vibration absorption target system and the vibration source such as a pump, and performing an effective damping action. This has the effect of providing a vibration absorbing device.
第１図乃至第３図は本発明の一実施例を示すもので、第
１図は動吸振装置の縦断正面図、第２図は第１図■−■
断面図、第３図は動吸振装置の原理図、第４図は本発明
の他の実施例を示す動吸振装置の縦断正面図、第５図は
さらに他の実施例を示す動吸振装置の縦断正面図、第６
図は側面図である。
１・・・動吸振装置、２・・・バンド、３・・ケース、
４・・・ばね捧、５・・・重錘、８・・・押しばね、９
・・・調整ナツト、Ｐ・・・配管。
第４図Figures 1 to 3 show one embodiment of the present invention, with Figure 1 being a longitudinal sectional front view of the dynamic vibration absorber, and Figure 2 being the same as Figures 1 - ■.
3 is a principle diagram of a dynamic vibration absorber, FIG. 4 is a longitudinal sectional front view of a dynamic vibration absorber showing another embodiment of the present invention, and FIG. 5 is a diagram of a dynamic vibration absorber showing still another embodiment. Vertical front view, No. 6
The figure is a side view. 1...Dynamic vibration absorber, 2...Band, 3...Case,
4... Spring support, 5... Weight, 8... Push spring, 9
...adjustment nut, P...piping. Figure 4
Claims (2)
可能な支持部材と、 前記枠体内において前記支持部材上に設けられた重錘と
、 前記枠体に取付けられ、前記支持部材の中間部をそれの
軸線直交方向に弾性的に可変的に押圧して支持部材の張
力を調整可能な張力調整手段と、を具備したことを特徴
とする動吸振装置。(1) a frame fixed to a vibration absorption target; a support member installed on the frame and capable of vibrating in response to vibrations of the vibration absorption target; and a weight provided on the support member within the frame; , comprising a tension adjustment means attached to the frame body and capable of elastically and variably pressing the intermediate portion of the support member in a direction perpendicular to its axis to adjust the tension of the support member. Dynamic vibration absorber.
ねじと、この調整ねじと前記重錘との間に介設された押
しばねとから成ることを特徴とする請求項（１）に記載
の動吸振装置。(2) Claim (1) characterized in that the tension adjustment means comprises an adjustment screw screwed into the frame body and a push spring interposed between the adjustment screw and the weight. ) The dynamic vibration absorber described in .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63217577A JPH0266337A (en) | 1988-08-31 | 1988-08-31 | Dynamic vibration absorbing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63217577A JPH0266337A (en) | 1988-08-31 | 1988-08-31 | Dynamic vibration absorbing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0266337A true JPH0266337A (en) | 1990-03-06 |
Family
ID=16706460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63217577A Pending JPH0266337A (en) | 1988-08-31 | 1988-08-31 | Dynamic vibration absorbing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0266337A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001355737A (en) * | 2000-02-29 | 2001-12-26 | General Electric Co <Ge> | Surface trailing brush seal |
| WO2003058090A1 (en) * | 2002-01-08 | 2003-07-17 | Honeywell International Inc. | Adjustable tuned mass damper |
| KR100748976B1 (en) * | 2005-04-11 | 2007-08-13 | 엘지전자 주식회사 | Antivibration arrangements of air conditioner |
| CN107606017A (en) * | 2017-08-31 | 2018-01-19 | 哈尔滨工程大学 | The active shock-absorbing means suitable for different tube diameters pipe-line system that a kind of nylon tape is fastenedly connected |
| CN108278417A (en) * | 2018-01-22 | 2018-07-13 | 中国五冶集团有限公司 | Reserving hole sleeve fixing frame |
| KR20220013721A (en) * | 2020-07-27 | 2022-02-04 | 엘지전자 주식회사 | Vibration reduction device for air conditioner piping |
-
1988
- 1988-08-31 JP JP63217577A patent/JPH0266337A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001355737A (en) * | 2000-02-29 | 2001-12-26 | General Electric Co <Ge> | Surface trailing brush seal |
| WO2003058090A1 (en) * | 2002-01-08 | 2003-07-17 | Honeywell International Inc. | Adjustable tuned mass damper |
| US6681908B2 (en) | 2002-01-08 | 2004-01-27 | Honeywell International, Inc. | Adjustable tuned mass damper |
| KR100748976B1 (en) * | 2005-04-11 | 2007-08-13 | 엘지전자 주식회사 | Antivibration arrangements of air conditioner |
| CN107606017A (en) * | 2017-08-31 | 2018-01-19 | 哈尔滨工程大学 | The active shock-absorbing means suitable for different tube diameters pipe-line system that a kind of nylon tape is fastenedly connected |
| CN107606017B (en) * | 2017-08-31 | 2019-07-16 | 哈尔滨工程大学 | A kind of active shock-absorbing means suitable for different tube diameters pipe-line system that nylon tape is fastenedly connected |
| CN108278417A (en) * | 2018-01-22 | 2018-07-13 | 中国五冶集团有限公司 | Reserving hole sleeve fixing frame |
| CN108278417B (en) * | 2018-01-22 | 2019-07-16 | 中国五冶集团有限公司 | Reserving hole sleeve fixing frame |
| KR20220013721A (en) * | 2020-07-27 | 2022-02-04 | 엘지전자 주식회사 | Vibration reduction device for air conditioner piping |
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