JPS61216932A - Vibration insulator for foundation of large-size machinery and the like - Google Patents
Vibration insulator for foundation of large-size machinery and the likeInfo
- Publication number
- JPS61216932A JPS61216932A JP5788585A JP5788585A JPS61216932A JP S61216932 A JPS61216932 A JP S61216932A JP 5788585 A JP5788585 A JP 5788585A JP 5788585 A JP5788585 A JP 5788585A JP S61216932 A JPS61216932 A JP S61216932A
- Authority
- JP
- Japan
- Prior art keywords
- vibration
- mass
- foundation
- base
- machine
- 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
- 239000012212 insulator Substances 0.000 title 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 12
- 238000002955 isolation Methods 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 230000005284 excitation Effects 0.000 description 15
- 230000000694 effects Effects 0.000 description 10
- 230000006735 deficit Effects 0.000 description 6
- 239000004576 sand Substances 0.000 description 4
- 230000002411 adverse Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 235000012489 doughnuts Nutrition 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/44—Foundations for machines, engines or ordnance
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Foundations (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、大容量の加振力を伴なう機械１例えば大型
のプレス、！！造機などを据付ける工場などで実施され
る大型機械基礎の防振装置に係り、さらにいえば、マス
ダンパーを利用した防振（減損）装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) This invention is applicable to a machine 1, such as a large press, which is accompanied by a large amount of excitation force! ! The present invention relates to vibration isolation devices for large machine foundations implemented in factories where machinery is installed, and more specifically to vibration isolation (impairment) devices that utilize mass dampers.
（従来の技術とその問題点など）
大容量の加振力を伴なう大型のプレス機械などを据付け
た工場などにおいては、その機械の稼動に伴ない建物全
体が振動する問題が生じている。(Conventional technology and its problems, etc.) In factories where large press machines that generate large amounts of excitation force are installed, the problem arises that the entire building vibrates as the machines operate. .
即ち、この振動は、他の精密機器や人体等に悪影響を及
ぼすことは勿論、近隣住民に対する公害源となる問題も
あるので、今日さまざまな防振対策がとられている。That is, these vibrations not only have an adverse effect on other precision equipment and the human body, but also pose a problem in that they become a source of pollution for nearby residents, so various anti-vibration measures are being taken today.
従来一般の防振装置は、機械と機械基礎との間にのみ防
振ばねを設置し、振動の伝達を防ぐ構成であった・
しかし、この方法だと機械基礎への振動伝播は小さくで
きるが、逆に機械そのものの振動が増幅する、従って、
プレス機械などの要求加工精度が向上しつつある現今、
製品精度に悪影響を及ぼす事例が増えている。Conventional vibration isolators have a structure in which a vibration isolating spring is installed only between the machine and the machine foundation to prevent the transmission of vibrations. However, with this method, the vibration propagation to the machine foundation can be reduced. , conversely, the vibration of the machine itself is amplified, therefore,
Nowadays, the required processing precision of press machines etc. is improving,
There are an increasing number of cases where product accuracy is adversely affected.
ところで、従来機械基礎などの減損又は除振の対策とし
ては、附加質量による方法が原理的に知られ、かつ、理
論的にその有効性が解析され理解されている。しかし、
コスト、構造仕様の面で具体的にならず、実用に供され
ていないのが実情である。By the way, as a conventional countermeasure against impairment or vibration isolation of machine foundations, etc., a method using added mass is known in principle, and its effectiveness has been theoretically analyzed and understood. but,
The reality is that it has not been put into practical use because it is not concrete in terms of cost and structural specifications.
（発明の目的）
そこで、この発明の目的は、加振源体の振動が基礎に伝
達するのを防止すると同時に、加振源体の振動そのもの
もマスダンパーによるエネルギー吸収効果によって吸収
せしめ減損ないし除振すること、及び加振源体の加振力
の大きさ又はその変化に応じて据付は施工後においても
減損ないし除振効果を調整すること（メンテナンス）が
容易にできる構成に改良した大型機械基礎などの防振装
置を提供することにある。(Object of the Invention) Therefore, the object of the present invention is to prevent the vibration of the excitation source body from being transmitted to the foundation, and at the same time absorb or eliminate the vibration of the excitation source body by the energy absorption effect of the mass damper. A large machine with an improved configuration that allows for easy vibration and adjustment (maintenance) of the impairment or vibration isolation effect even after installation, depending on the magnitude of the excitation force of the excitation source or its changes. Our objective is to provide vibration isolators for foundations, etc.
（発明の構成）
上記の目的を達成するために、この発明に係る大型機械
基礎など（但し、機械の基礎に限るものではなく、大容
量の加振力を伴なう物＝加振源体の基礎一般を包含する
。）の防振装置は、基本的には基礎の上に防振ばねを介
して架台を載置し、この架台上に大容量の加振力を伴な
う機械その他の加振源体を設置して成り、特には前記架
台上に、ばねを介して質量可変型（調整可能）のマスダ
ンパーを設置したことを特徴とする構成とされている。(Structure of the Invention) In order to achieve the above object, a large machine foundation according to the present invention (however, it is not limited to a machine foundation, an object with a large amount of excitation force = an excitation source) The vibration isolating device basically includes a pedestal placed on the foundation via a vibration isolating spring, and a machine or other device that generates a large amount of vibration force is placed on this pedestal. The structure is characterized in that a mass damper of a variable mass type (adjustable) is installed on the pedestal via a spring.
（実施例） 次に１図示した実施例により詳細に説明する。(Example) Next, a detailed explanation will be given with reference to an embodiment shown in one figure.
第１図と第２図は、この発明に係る大型機械基礎の防振
装置を模式図的に示している。1 and 2 schematically show a vibration isolating device for a large machine foundation according to the present invention.
図中１は機械基礎、２は前記機械基礎１の上に防振ばね
３．３を介して載置された架台、４は架台３上に設置さ
れた大容量の加振力を伴なう機械の一例として大型プレ
ス機械をイメージして成る加振源体、５．５・・・は架
台２上にばね６．６・・・を介して設置した質量可変型
構造のマスダンパーである。In the figure, 1 is a machine foundation, 2 is a pedestal mounted on the machine foundation 1 via an anti-vibration spring 3.3, and 4 is a pedestal with a large-capacity excitation force installed on the pedestal 3. As an example of a machine, the vibration source body 5.5, which is modeled after a large press machine, is a mass damper with a variable mass structure installed on the pedestal 2 via springs 6,6....
コンクリート製の機械基礎ｌは、支持杭７．７・・・に
て支持され、床コンクリート８とは目地部材９、・９に
より縁が切られている（第２図）。The machine foundation l made of concrete is supported by support piles 7, 7, . . . , and is separated from the concrete floor 8 by joint members 9, 9 (Fig. 2).
マスダンパー５は、架台２上に、質量バランスが良く機
械（加振源体１）の稼動に支障とならない配置で４個（
但し、４個の限りではなく、１個ないし複数個）設置さ
れている。The mass dampers 5 are arranged in four pieces on the pedestal 2 (
However, the number is not limited to four, but one or more.
各マスダンパー５の構造詳細は、第３図と第４図に示し
たとおりである。これは総量が５トンの重量をもつ場合
の例であり、ばね６．６上にＨ形鋼による横架材１０．
１０を取り付け、該横架材１０．１０上に上面開放の箱
形をなすハウジング１１が設置されている。ハウジング
１１の平面形状は、たて×よこが７００ Ｘ １２００
ｍｍ位の長方形（第４図）であり、架台２の上面からハ
ウジング１１上端縁までの高さは１０００ｍｍ位の大き
さである。ハウジング１１内には、その底板中央に３本
（但し、本数はこの限りでない、）のガイドロッド１２
・・・が等配して垂直に立てられ、各ガイドロッド１２
に沿って質量部材としてのカウンタウェイト１３・・・
と砂袋１４・・・が加除自在に設置されている。The structural details of each mass damper 5 are as shown in FIGS. 3 and 4. This is an example where the total weight is 5 tons, and the horizontal member 10.
10, and a box-shaped housing 11 with an open top is installed on the horizontal member 10.10. The planar shape of the housing 11 is 700 x 1200 in length x width.
It has a rectangular shape (FIG. 4) of about 1000 mm in size, and the height from the top surface of the pedestal 2 to the upper edge of the housing 11 is about 1000 mm. Inside the housing 11, there are three guide rods 12 (however, the number is not limited to this) at the center of the bottom plate.
... are arranged vertically in an evenly distributed manner, and each guide rod 12
Along the counterweight 13 as a mass member...
and sand bags 14... are installed in a manner that can be freely added and removed.
ちなみに、カウンタウェイト１３は、外径φ５００、厚
さ３厘層、重さ４５に、位のドーナツ板状のものであり
、これが所要数ガイドロッド１２に沿って積み重ねられ
ている。砂袋１４も同じくドーナツ形状をなすものであ
り、１個当たり重量は３０ｋｇ位とされている。よって
、人力による調整が可能である。Incidentally, the counterweight 13 has a donut plate shape with an outer diameter of 500 mm, a thickness of 3 layers, and a weight of about 45 mm, and a required number of these are stacked along the guide rods 12. The sand bags 14 also have a donut shape, and each bag weighs about 30 kg. Therefore, manual adjustment is possible.
即ち、通常はこの砂袋１４を加除して質量が調整される
。That is, the mass is normally adjusted by adding or subtracting this sand bag 14.
ちなみにこのマスダンパー５は、ハウジング１１の重量
が約１トン、カウンタウェイト１３の総量が約２．５ト
ン、砂袋１４の総量が約１．５トンで合計５トンの重さ
とされている。Incidentally, this mass damper 5 has a total weight of 5 tons, with the housing 11 weighing about 1 ton, the total weight of the counterweight 13 about 2.5 tons, and the total weight of the sand bags 14 about 1.5 tons.
砂袋１４の上面には押えプレート１５を当てがい、その
上からガイトロ７ド１２へねじ込んだストッパー（ナツ
ト）１Ｂにより各質量部材を固定し、もって加振源体４
が振動で飛び跳ねたり共振することのない構成とされて
いる。A presser plate 15 is applied to the upper surface of the sandbag 14, and each mass member is fixed by a stopper (nut) 1B screwed into the gaitro 7 door 12 from above, and thereby the excitation source body 4
The structure is such that it does not bounce or resonate due to vibration.
上記構成の防振装置における除振ないし減損の作用は、
次のように説明できる。The effect of vibration isolation or impairment in the vibration isolator with the above configuration is as follows:
It can be explained as follows.
まず、従来の如くマスダンパー５が無いときの振動系（
質点系）は、第５図のモデルで表わすことができ、機械
基礎１の固有振動数ｆＧは、ｆ６ｘ’１／２πｖ−ｌ７
Ｉ−（但し、ｋはばね定数、ｍは質量）で表わされ、同
機械基礎ｌの加振外力による共振曲線は第６図の点線曲
線ａのようになる。ｋ、ｍは不変の定数であり、よって
施工後のメンテナンスはできない。First, the vibration system when there is no mass damper 5 as in the past (
The mass point system) can be expressed by the model shown in Figure 5, and the natural frequency fG of the machine foundation 1 is f6x'1/2πv-l7
It is expressed as I- (where k is a spring constant and m is mass), and the resonance curve of the mechanical foundation l due to the excitation external force is like the dotted curve a in FIG. k and m are constants that cannot be maintained after construction.
これに対して、この発明に係る上記実施例の防振装置の
場合、その振動系（質点系）は、第７図のモデルで表わ
すことができる。この場合、加振力が例えばＩＧＨｚの
振動数に対して、マスダンパー５の固有振動数をｌ０Ｉ
（ｚ とすると、加振エネルギーのほとんどをマスダン
パー５で吸収することになる。それは例えば機械基礎１
の質量をＭｓ とし、マスダンパー５の質量をＭ−とし
て、両者の比Ｍ ｓ ／ Ｍ ｓが１．０ 、０．５
、０．１の場合の共振曲線は、第６図中の実線と１点鎖
線及び、２点鎖線の各曲線す、ｃ、ｄのようになる。On the other hand, in the case of the vibration isolator of the above embodiment according to the present invention, its vibration system (mass point system) can be represented by the model shown in FIG. In this case, for example, when the excitation force is at a frequency of IGHz, the natural frequency of the mass damper 5 is
(If z, most of the excitation energy will be absorbed by the mass damper 5. For example, the machine foundation 1
Let the mass of the mass damper 5 be Ms, and the mass of the mass damper 5 be M-, and the ratio of both Ms/Ms is 1.0, 0.5
, 0.1, the resonance curves are as shown by the solid line, one-dot chain line, and two-dot chain line curves c and d in FIG.
従って、加振同項振動数ｆｏが卓越する条件下では、振
動（振幅）が６曲線の条件で半減状態となり、ｂ、ｃ曲
線の条件では極端に小さくなって減損ないし除振の効果
が顕著にあられれる。Therefore, under conditions where the excitation isotropic frequency fo is predominant, the vibration (amplitude) is halved under the conditions of the 6 curves, and becomes extremely small under the conditions of the b and c curves, resulting in a significant impairment or vibration isolation effect. Hail to you.
また、上記したす、ｃ、６曲線の条件対照くよれば、マ
スダンパー５の質量を適正に調整することによって減損
、除振の効果が著るしいこと明らかである。しかも１機
械基礎ｌの固有振動数ｆ。Further, according to the comparison of the conditions of the above-mentioned curves 6, 5, and 6, it is clear that by appropriately adjusting the mass of the mass damper 5, the effects of loss and vibration isolation are significant. Moreover, the natural frequency f of one machine foundation l.
に応じてマスダンパー５の質量を選択、調整するメンテ
ナンスも有効的である。Maintenance that selects and adjusts the mass of the mass damper 5 according to the situation is also effective.
（作用効果）
以上に実施例と併せて詳細に説明したとおりであって、
この発明に係る大型機械基礎などの防振装置によれば、
大容量の加振力を伴なうプレス機械などの加振源体４が
発生する振動そのものを、マスダンパー５によるエネル
ギー吸収効果によって吸収せしめ、優れた減損ないし除
振の効果を得ることができる。(Operation and Effect) As explained in detail above in conjunction with the examples,
According to the vibration isolating device for large machine foundations, etc. according to the present invention,
The vibration itself generated by the vibration source 4, such as a press machine that generates a large amount of vibration force, can be absorbed by the energy absorption effect of the mass damper 5, and an excellent attenuation or vibration isolation effect can be obtained. .
従って、基礎１へ伝達される振動はさらに小さくなり、
よって工場などにおいて他の精密機器や人体等に悪影響
を及ぼす懸念が少ない、勿論、振動公害のおそれもない
・
しかも、マスダンパー５の質量の調整により。Therefore, the vibration transmitted to the foundation 1 becomes even smaller,
Therefore, there is little concern that it will adversely affect other precision equipment or the human body in factories, etc., and of course there is no risk of vibration pollution.Moreover, by adjusting the mass of the mass damper 5.
機械など加振源体１の据付は施工後においても、必要に
応じて減損、除振の効果、程度を調整することが可能で
あり、即ちメンテナンスが容易であり、融通性に富むの
である。Even after installation of the vibration source 1, such as a machine, it is possible to adjust the effect and degree of impairment and vibration isolation as necessary, which means that maintenance is easy and highly flexible.
第１図はこの発明に係る防振装置を模式図的に簡単化し
て示した斜視図、第２図は同立面図、第３図はマスダン
パーの垂直断面図、第４図は同平面図、第５図は従来の
振動系のモデル図、第６図は振動系の加振外力による共
振曲線図、第７図はこの発明に係る防振装置の振動系モ
デル図である。
第１図
第４図
第５図Fig. 1 is a simplified perspective view schematically showing the vibration isolator according to the present invention, Fig. 2 is an elevational view of the same, Fig. 3 is a vertical sectional view of the mass damper, and Fig. 4 is a plane view of the same. 5 is a model diagram of a conventional vibration system, FIG. 6 is a resonance curve diagram of the vibration system due to an excitation external force, and FIG. 7 is a model diagram of the vibration system of the vibration isolator according to the present invention. Figure 1 Figure 4 Figure 5
Claims (2)
２）を載置し、この架台（２）上に加振源体（４）を設
置して成る防振装置において、前記架台（２）上にばね
（６）を介して質量可変型のマスダンパー（５）を設置
したことを特徴とする大型機械基礎などの防振装置。(1) A frame (
2) and a vibration source body (4) installed on the pedestal (2), a variable mass type mass is mounted on the pedestal (2) via a spring (6). A vibration isolation device for large machine foundations, etc., characterized by the installation of a damper (5).
スダンパー（５）は、ばね（６）上に載置したハウジン
グ（１１）内にガイドロッド（１２）を立て、このガイ
ドロッド（１２）に沿って加除自在な質量部材（１３）
（１４）を設置し、これら質量部材（１３）（１４）は
ガイドロッド（１２）に設けた押えプレート（１５）及
びストッパー（１６）にて固定されている、大型機械基
礎などの防振装置。(2) The variable mass type mass damper (5) described in claim 1 has a guide rod (12) erected in a housing (11) placed on a spring (6). Mass member (13) that can be freely added and removed along (12)
(14) is installed, and these mass members (13) and (14) are fixed with a presser plate (15) and a stopper (16) provided on the guide rod (12), a vibration isolator for large machine foundations, etc. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5788585A JPS61216932A (en) | 1985-03-22 | 1985-03-22 | Vibration insulator for foundation of large-size machinery and the like |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5788585A JPS61216932A (en) | 1985-03-22 | 1985-03-22 | Vibration insulator for foundation of large-size machinery and the like |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61216932A true JPS61216932A (en) | 1986-09-26 |
| JPH0337608B2 JPH0337608B2 (en) | 1991-06-06 |
Family
ID=13068442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5788585A Granted JPS61216932A (en) | 1985-03-22 | 1985-03-22 | Vibration insulator for foundation of large-size machinery and the like |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61216932A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010236300A (en) * | 2009-03-31 | 2010-10-21 | Nishimatsu Constr Co Ltd | Substructure |
| JP2019090211A (en) * | 2017-11-14 | 2019-06-13 | 株式会社竹中工務店 | Anti-oscillation floor structure |
| JP2022156585A (en) * | 2021-03-31 | 2022-10-14 | 大和ハウス工業株式会社 | Movement and installation building and movement and installation method of the same |
-
1985
- 1985-03-22 JP JP5788585A patent/JPS61216932A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010236300A (en) * | 2009-03-31 | 2010-10-21 | Nishimatsu Constr Co Ltd | Substructure |
| JP2019090211A (en) * | 2017-11-14 | 2019-06-13 | 株式会社竹中工務店 | Anti-oscillation floor structure |
| JP2022156585A (en) * | 2021-03-31 | 2022-10-14 | 大和ハウス工業株式会社 | Movement and installation building and movement and installation method of the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0337608B2 (en) | 1991-06-06 |
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