JPH0333532A - Vibration isolator - Google Patents
Vibration isolatorInfo
- Publication number
- JPH0333532A JPH0333532A JP1166867A JP16686789A JPH0333532A JP H0333532 A JPH0333532 A JP H0333532A JP 1166867 A JP1166867 A JP 1166867A JP 16686789 A JP16686789 A JP 16686789A JP H0333532 A JPH0333532 A JP H0333532A
- Authority
- JP
- Japan
- Prior art keywords
- base
- vibration
- case
- pneumatic spring
- suspension members
- 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
- 238000005452 bending Methods 0.000 claims description 6
- 230000005856 abnormality Effects 0.000 abstract description 7
- 238000006073 displacement reaction Methods 0.000 abstract description 6
- 239000000725 suspension Substances 0.000 abstract 3
- 238000001514 detection method Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 5
- 238000002955 isolation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
Landscapes
- Body Structure For Vehicles (AREA)
- Vibration Prevention Devices (AREA)
Abstract
Description
【発明の詳細な説明】 〔発明の目的〕 （産業上の利用分封） 本発明は吊り部材を改良した振動絶縁装置に関する。[Detailed description of the invention] [Purpose of the invention] (Industrial use packaging) The present invention relates to a vibration isolating device with an improved hanging member.
（従来の技術）
従来、建築物を地震等の振動を原因とする災害から保護
することや、精密機器を輸送時の路面振動から保護する
ことを目的として、特開昭６３−７２９３６号公報等で
知られる如く第６図、第７図に示すような振動絶縁装置
である。(Prior Art) Conventionally, for the purpose of protecting buildings from disasters caused by vibrations such as earthquakes, and protecting precision equipment from road vibration during transportation, Japanese Patent Application Laid-Open No. 63-72936, etc. This is a vibration isolating device as shown in FIGS. 6 and 7.
この装置は、ベース１と荷台または床面２との間に振動
絶縁装置３が配置されている。この装置は、外側ケース
４と内側ケース５、および両ケースの間を連結する曲げ
剛性の小さい吊り部材６Ａから成り、外側ケース４はベ
ース１に、内側ケース５は荷台（床面）２に、それぞれ
ボルト７によって固定されている。そして、ベースｌ上
に精密機器が載置される。In this device, a vibration isolating device 3 is arranged between a base 1 and a loading platform or a floor surface 2. This device consists of an outer case 4, an inner case 5, and a hanging member 6A with low bending rigidity that connects both cases.The outer case 4 is attached to the base 1, the inner case 5 is attached to the loading platform (floor surface) 2, They are each fixed with bolts 7. Then, precision equipment is placed on the base l.
しかしながら、この従来の装置にあっては、吊材６Ａの
一本一本が独立して設けられているので、特定の吊材６
Ａに過度の荷重が作用する恐れがある。However, in this conventional device, each hanging material 6A is provided independently, so a specific hanging material 6A is provided independently.
There is a risk that excessive load will be applied to A.
このため、吊材６Ａは十分な強度を得るために大きなも
のとする必要がある。これにより、吊材６Ａの曲げ剛性
が大きくなり、振動絶縁性能が悪くなる。Therefore, the hanging material 6A needs to be large in order to obtain sufficient strength. As a result, the bending rigidity of the hanging member 6A increases, and the vibration insulation performance deteriorates.
また、吊材６Ａの長さを調整することで、各吊材６Ａに
作用する荷重を均一化することも考えられるがこの場合
でも、完全に荷重の均一化を図ることはできない。また
、輸送用車両の急発進、急停止時に発生する荷台の大変
位を防止するためにダンパー１０等を併用することもあ
るが、ダンパーの特性が変化すると振動絶縁性能も変化
するため、これを柑に点検する必要がある。It is also possible to equalize the load acting on each hanging material 6A by adjusting the length of the hanging material 6A, but even in this case, it is not possible to completely equalize the load. In addition, a damper 10 or the like is sometimes used in conjunction with the vehicle to prevent large displacements of the loading platform that occur when a transport vehicle suddenly starts or stops, but if the characteristics of the damper change, the vibration isolation performance also changes, so this is not recommended. I really need to check it out.
（発明が解決しようとするａｌｌ！Ｍ）このように、従
来の振動絶縁装置においては、吊材が一本一本独立して
設けられていたので、吊材に均一荷重を作用させること
ができなかった。(All!M that the invention seeks to solve) In this way, in the conventional vibration isolating device, each hanging member was provided independently, so it was not possible to apply a uniform load to the hanging members. There wasn't.
また、ダンパー等を併用する場合、その特性の変化を常
に点検する必要がある。Furthermore, when using dampers, etc., it is necessary to constantly check for changes in their characteristics.
本発明は上記の点を考慮して威されたもので、安定した
振動絶縁性能を有し簡単に異常を検出できる振動絶縁装
置を提供することを目的とする。The present invention was developed in consideration of the above points, and an object of the present invention is to provide a vibration isolating device that has stable vibration isolation performance and can easily detect abnormalities.
（ｉｌｌ！題を解決するための手段）
上記目的を達成するために、本発明においては荷台と機
器を積載するベースとの間を交互に系合する曲げ剛性の
小さい一連の吊り部材で連結し、３
さらに指金とベースとの間に空気ばねを配設している。(Means for solving the ill! problem) In order to achieve the above object, the present invention connects the loading platform and the base on which the equipment is loaded by a series of hanging members having low bending rigidity that are connected alternately. , 3 Furthermore, an air spring is disposed between the finger metal and the base.
（作用）
このように構成することにより、吊り部材に均等に荷重
を作用させることができるとともに、ダンパーおよび空
気ばねによりベースの振幅を押えられる。さらに、空気
ばねの圧力とベースの変位との関係からダンパーの異常
を検出できる。(Function) With this configuration, the load can be applied evenly to the hanging member, and the vibration of the base can be suppressed by the damper and the air spring. Furthermore, an abnormality in the damper can be detected from the relationship between the pressure of the air spring and the displacement of the base.
（実施例）
以下本発明の一実施例を第１図から第５図を参照して説
明する。即ち、重量物と輸送車の荷台（またはフレーム
）２間には振動絶縁装置３が装着される。(Example) An example of the present invention will be described below with reference to FIGS. 1 to 5. That is, a vibration isolator 3 is installed between the heavy object and the carrier (or frame) 2 of the transport vehicle.
この振動絶縁装置３は上端部にはり状部材４１を有する
外側ケース４と、下端部にはり状部材５１を有する内側
ケース５とを備えている。そして、外側ケース４と内側
ケース５間は、外側ケース４のはり状部材４１と内側ケ
ース５のはり状部材５１に交互に系合する一連の曲げ剛
性の小さい吊り部材６で連結する。尚、吊り部材６の始
端と終端は、連−
結合具９で連結する。即ち、荷台２上には振動絶縁装置
３を介して機器８が載置される。This vibration isolating device 3 includes an outer case 4 having a beam-like member 41 at its upper end, and an inner case 5 having a beam-like member 51 at its lower end. The outer case 4 and the inner case 5 are connected by a series of hanging members 6 having low bending rigidity, which are alternately connected to the beam-like members 41 of the outer case 4 and the beam-like members 51 of the inner case 5. Incidentally, the starting end and the terminal end of the hanging member 6 are connected by a connecting member 9. That is, the equipment 8 is placed on the loading platform 2 via the vibration isolating device 3 .
また、ベース１と荷台２との間に空気ばねが丙己設され
ている。Further, an air spring is installed between the base 1 and the loading platform 2.
ここで、本実施例の構成による作用効果を説明する。本
実施例においては、ベース１を６個の振動絶縁装置３で
荷台２に吊り下げる構成としている。このため、機器８
を載置することにより発生する荷重は、吊り部材６にほ
ぼ均等に作用する。Here, the effects of the configuration of this embodiment will be explained. In this embodiment, the base 1 is suspended from the loading platform 2 by six vibration isolators 3. For this reason, equipment 8
The load generated by placing the hanging member 6 acts almost equally on the hanging member 6.
また、吊り部材の長さを氾１、重力加速度をｇとすると
この様な系の固有振動数ｆは１次式で表される。Further, when the length of the hanging member is 1 and the gravitational acceleration is g, the natural frequency f of such a system is expressed by a linear equation.
ｆ ＝ （１／ ２７ｃ） ・４ｇ／Ｑ、
（１）即ち、系の固有振動数は機器の重量には依存
せず吊り部材６の長さのみによって決まる。従って、絶
縁しようとする振動の周波数から系の固有振動数をずら
すことが容易にできるという利点がある。f = (1/27c) ・4g/Q,
(1) That is, the natural frequency of the system does not depend on the weight of the equipment and is determined only by the length of the hanging member 6. Therefore, there is an advantage that the natural frequency of the system can be easily shifted from the frequency of the vibration to be isolated.
ベースの振幅が大きくなると、ベースは荷台２に取付け
られた空気ばね１２に当たり、振幅の増加を防ぐことが
できる。When the amplitude of the base increases, the base hits the air spring 12 attached to the loading platform 2, thereby preventing the amplitude from increasing.
また、静止時に第５図に示すようにベースの一辺に配設
された空気ばねの圧力を上昇させ、その時のベース変位
δを測定することにより、ダンパーや吊り部材の異常を
検出することができる。In addition, by increasing the pressure of the air spring installed on one side of the base when it is stationary, as shown in Figure 5, and measuring the base displacement δ at that time, it is possible to detect abnormalities in the damper or hanging member. .
したがって、ダンパーや振動絶縁装置を分解することな
く点検し、異常を検出することができるという利点があ
る。Therefore, there is an advantage that an abnormality can be detected by inspecting the damper or vibration isolating device without disassembling it.
尚、本発明は上記実施例に限定されるものではない。例
えば、空気ばねの圧力のかわりにベースに加えられる荷
重を用いて、荷重とベース変位との関係から異常を検出
することもできる。Note that the present invention is not limited to the above embodiments. For example, an abnormality can also be detected from the relationship between the load and the base displacement by using the load applied to the base instead of the pressure of the air spring.
以」二説明したように本発明においては、外側ケースの
上端部と内側ケースの下端部を交互に系合する曲げ剛性
の小さい吊り部材で連結し、さらに補合とベースとの間
に空気ばねを配設することにより、振動絶縁性能が良好
でかつ、ダンパーや吊り部材を分解すること無く点検で
きる。As explained above, in the present invention, the upper end of the outer case and the lower end of the inner case are connected by alternating hanging members with low bending rigidity, and an air spring is further provided between the complement and the base. This arrangement provides good vibration isolation performance and allows for inspection without disassembling the damper or hanging member.
第１図は本発明の一実施例を示す振動絶縁装置の構成図
、第２図は第１図に示す振動絶縁装置の断面図、第３図
乃至第５図は夫々第１図に示す振動絶縁装置の動作説明
図、第６図は従来の振動絶縁装置を示す断面図、第７図
は従来の振動絶縁装置を示す構成図である。
１・・ベース、
２・・・荷台（またはフレーム）、
３・・・振動絶縁装置、 ４・・外側ケース、４１・
・・はり状部材、 ５・・・内側ケース、５１・
・はり状部材、 ６・・吊り部材、７・・・ボル
ト、 ８・・・機器、９・・・連結金具、
１０・・・ダンパー１１・・支持部材、
１２・・・空気ばね、１６・・・補助吊り部材、 １
８・変位拘束部材、３５・・・コンプレッサー、 ３６
・・・タンク、３８・・・コントロール弁。FIG. 1 is a block diagram of a vibration isolating device showing an embodiment of the present invention, FIG. 2 is a sectional view of the vibration isolating device shown in FIG. 1, and FIGS. FIG. 6 is a sectional view showing a conventional vibration isolating device, and FIG. 7 is a configuration diagram showing a conventional vibration isolating device. 1... Base, 2... Loading platform (or frame), 3... Vibration isolator, 4... Outer case, 41...
...Beam-shaped member, 5...Inner case, 51.
- Beam-shaped member, 6... Hanging member, 7... Bolt, 8... Equipment, 9... Connecting metal fittings,
10... Damper 11... Support member,
12... Air spring, 16... Auxiliary hanging member, 1
8. Displacement restraint member, 35... Compressor, 36
...Tank, 38...Control valve.
Claims (1)
機器を積載するベースとの間に配設される振動絶縁装置
において、 荷台と機器を積載するベースのいずれか一方に内側ケー
スを、他方に外側ケースを取付け、これらケース間を曲
げ剛性の小さい吊り部材によって連結し、さらに荷台と
機器を積載するベースの間に空気ばねを配設したことを
特徴とする振動絶縁装置。[Scope of Claims] A vibration isolating device that is installed between the loading platform and a base on which the equipment is loaded when precision equipment is installed on the loading platform of a transportation vehicle, which An inner case is attached to one side and an outer case is attached to the other side, these cases are connected by a hanging member with low bending rigidity, and an air spring is further arranged between the loading platform and the base on which the equipment is loaded. Vibration isolator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1166867A JPH0333532A (en) | 1989-06-30 | 1989-06-30 | Vibration isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1166867A JPH0333532A (en) | 1989-06-30 | 1989-06-30 | Vibration isolator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0333532A true JPH0333532A (en) | 1991-02-13 |
Family
ID=15839107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1166867A Pending JPH0333532A (en) | 1989-06-30 | 1989-06-30 | Vibration isolator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0333532A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1035258A1 (en) * | 1998-06-15 | 2000-09-13 | Hitachi Construction Machinery Co., Ltd. | Construction machinery with cab |
| JP2020003008A (en) * | 2018-06-28 | 2020-01-09 | 株式会社ユニロック | Vibration proofing structure and measurement device |
-
1989
- 1989-06-30 JP JP1166867A patent/JPH0333532A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1035258A1 (en) * | 1998-06-15 | 2000-09-13 | Hitachi Construction Machinery Co., Ltd. | Construction machinery with cab |
| EP1035258A4 (en) * | 1998-06-15 | 2000-12-06 | Hitachi Construction Machinery | Construction machinery with cab |
| JP2020003008A (en) * | 2018-06-28 | 2020-01-09 | 株式会社ユニロック | Vibration proofing structure and measurement device |
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