JP4673636B2 - Tubular vertical standing member with excellent vibration damping - Google Patents

Tubular vertical standing member with excellent vibration damping Download PDF

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JP4673636B2
JP4673636B2 JP2005042905A JP2005042905A JP4673636B2 JP 4673636 B2 JP4673636 B2 JP 4673636B2 JP 2005042905 A JP2005042905 A JP 2005042905A JP 2005042905 A JP2005042905 A JP 2005042905A JP 4673636 B2 JP4673636 B2 JP 4673636B2
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hollow body
vertical hollow
vibration
vertical
suspension member
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JP2006226467A (en
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一真 立石
久雄 飯田
健 岡部
毅 飯田
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Nippon Steel Metal Products Co Ltd
Osaka Sangyo University
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Nippon Steel Metal Products Co Ltd
Osaka Sangyo University
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Description

本発明は、制振装置及び制振性に優れた立設部材に関する。詳細には、道路や橋梁などに立設される、照明柱、標識柱、信号柱などの立設部材に用いられる制振装置及び制振性に優れた立設部材に関する。   The present invention relates to a vibration damping device and a standing member excellent in vibration damping performance. Specifically, the present invention relates to a vibration control device used for a standing member such as an illumination column, a sign column, a signal column, and the like, which is erected on a road, a bridge, and the like, and a standing member having excellent vibration damping properties.

道路や橋梁などに立設された、照明柱、標識柱、信号柱などの立設部材は、風、地震や車両走行に伴う路面振動などに起因する共振現象によって、揺れが生じることがある。これらの立設部材に揺れが生じると、揺れによって立設部材の損傷が起きやすく、また、その損傷が促進される。また、発生する振動により、立設部材に取り付けられた器具の寿命が短くなる問題があり、さらに、照明柱の場合には、照明光が揺れて人に違和感を与える問題もある。   A standing member such as an illumination column, a sign column, or a signal column installed on a road or a bridge may shake due to a resonance phenomenon caused by a wind, an earthquake, a road surface vibration caused by traveling of a vehicle, or the like. When these standing members swing, the standing members are easily damaged by the swing, and the damage is promoted. In addition, there is a problem that the life of the instrument attached to the standing member is shortened due to the generated vibration. Further, in the case of the illumination column, there is a problem that the illumination light is shaken and the person feels uncomfortable.

このような共振現象に起因する立設部材の揺れを防止するために、
(a)立設部材の重量、形状及び剛性を変更して、その固有振動数を変更する方法、
(b)立設部材の内部に物理振り子及び当接具を設けて、振動時に物理振り子を当接具に衝突させることによって制振効果を持たせる方法、
が、それぞれ、すでに提案されている。
In order to prevent the standing member from shaking due to such a resonance phenomenon,
(a) A method of changing the natural frequency by changing the weight, shape and rigidity of the standing member,
(b) A method of providing a physical pendulum and a contact tool inside the standing member and having a vibration damping effect by causing the physical pendulum to collide with the contact tool during vibration,
However, each has already been proposed.

しかしながら、上記(a)の方法では、特定の振動数に対しては制振効果があるものの、風による揺れのように、励振周期や振動数が様々に変動する揺れには対応できないだけでなく、立設部材の材料設計の自由度を減じることになる。また、上記(b)の方法では、励振周期や振動数が様々に変動する揺れには対応できないことに加えて、制振効果を上げるためには、物理振り子及び当接具を一定以上の大きさにする必要がある。そのために収納スペースが必要となるが、これも、立設部材の装置設計の自由度を減じる結果となる。   However, although the method (a) has a damping effect for a specific frequency, it cannot cope with fluctuations in which the excitation cycle and frequency fluctuate variously, such as fluctuations caused by wind. As a result, the degree of freedom in the material design of the standing member is reduced. In addition, in the method (b) above, in addition to not being able to cope with fluctuations in which the excitation cycle and frequency fluctuate in various ways, in order to increase the vibration damping effect, the physical pendulum and the abutment tool must be larger than a certain size. It is necessary to be safe. For this purpose, a storage space is required, which also reduces the degree of freedom in designing the standing member.

特許文献1には、このような従来技術の問題点を踏まえて、振動数の変動に対応した制振装置が記載されている。   Patent Document 1 describes a vibration damping device that responds to fluctuations in the frequency in light of such problems of the prior art.

すなわち、垂直中空体の内部に、非固定の自由振動部を持たせて鋼製チェーンまたはワイヤーを吊り下げ、かつこの鋼製チェーンまたはワイヤーと垂直中空体の内壁との間隔を等価に維持してなる制振装置であり、この制振装置を垂直立設部材の外部又は内部に取り付けることによって、垂直立設部材に加えられた揺れによる振動を減衰させるものである。   That is, a steel chain or wire is suspended with a non-fixed free vibration part inside the vertical hollow body, and the distance between the steel chain or wire and the inner wall of the vertical hollow body is maintained equivalent. A vibration damping device is provided, and this vibration damping device is attached to the outside or the inside of the vertical erected member, thereby attenuating the vibration caused by the vibration applied to the vertical erected member.

図6に、特許文献1に記載の制振装置の一例を示す。(a)は制振装置の軸心を通る一つの縦断面図であり、(b)は(a)に対して90°回転した方向の縦断面図である。   FIG. 6 shows an example of the vibration damping device described in Patent Document 1. (a) is one longitudinal sectional view passing through the axis of the vibration damping device, and (b) is a longitudinal sectional view in a direction rotated by 90 ° with respect to (a).

制振装置1は、全長にわたって同一径の円形鋼管からなる垂直中空体10と、その内部に吊り下げられた鋼製チェーン11の吊り下げ部材からなる。この鋼製チェーン11の上端は、垂直中空体10の上部に設置された蓋板12に固定して取り付けられた固定フック15によって支持されている。したがって、鋼製チェーンは上端を除いて非固定の自由振動部を形成している。   The vibration damping device 1 includes a vertical hollow body 10 made of a circular steel pipe having the same diameter over the entire length, and a suspension member of a steel chain 11 suspended therein. The upper end of the steel chain 11 is supported by a fixing hook 15 that is fixedly attached to a cover plate 12 installed on the upper part of the vertical hollow body 10. Therefore, the steel chain forms an unfixed free vibration part except for the upper end.

ここで、鋼製チェーンは円形鋼管の中心部において垂直に吊り下げられているため、振動のない状態では、鋼製チェーン11の外面と垂直中空体10の内面との間隔dは、円形鋼管の内部において等価に維持されている。   Here, since the steel chain is suspended vertically at the center of the circular steel pipe, in the absence of vibration, the distance d between the outer surface of the steel chain 11 and the inner surface of the vertical hollow body 10 is the same as that of the circular steel pipe. It is kept equivalent internally.

この制振装置1に、風、地震や車両走行に伴う路面振動などに起因する共振現象によって生じた揺れが伝わり、励振が起こる。そのとき、垂直中空体10と鋼製チェーン11はともに振動するが、鋼製チェーン11の自由振動部は垂直中空体10とは異なった態様で振動するため、鋼製チェーン11の自由振動部が垂直中空体10の内壁面に衝突する。その結果、垂直中空体10の振動エネルギーが散逸するので、垂直中空体10の振動が急速に減衰し、振動が制止される。   This vibration damping device 1 is subjected to vibrations caused by a resonance phenomenon caused by wind, earthquake, road surface vibration caused by traveling of the vehicle, etc., and excitation occurs. At that time, both the vertical hollow body 10 and the steel chain 11 vibrate, but the free vibration part of the steel chain 11 vibrates in a different manner from the vertical hollow body 10, so the free vibration part of the steel chain 11 is It collides with the inner wall surface of the vertical hollow body 10. As a result, since the vibration energy of the vertical hollow body 10 is dissipated, the vibration of the vertical hollow body 10 is rapidly damped and the vibration is stopped.

このように、垂直中空体10の内部に鋼製チェーン11を吊り下げることで、垂直中空体に加わった振動を減衰し、制止することができる制振装置を形成することができる。   Thus, by suspending the steel chain 11 inside the vertical hollow body 10, it is possible to form a vibration damping device that can attenuate and stop vibration applied to the vertical hollow body.

そして、立設部材が中空の垂直部材である場合には、この制振装置1をその垂直立設部材の外部又は内部に取り付けることによって、垂直立設部材に加えられた揺れによる振動を、制振装置を構成する垂直中空体に伝播させ、そして、その垂直中空体においてその振動を減衰させて、制止することができるのである。   When the standing member is a hollow vertical member, the vibration damping device 1 is attached to the outside or the inside of the vertical standing member to suppress vibration caused by the vibration applied to the vertical standing member. The vibration can be propagated to the vertical hollow body constituting the vibration device, and the vibration can be attenuated in the vertical hollow body to be stopped.

他方、立設部材が中空体ではない場合や中空体であっても傾斜している場合には、上記の制振装置を、立設部材の外部に取り付けることによって、立設部材に制振性を付与することができる。   On the other hand, when the standing member is not a hollow body or is inclined even if it is a hollow body, the above-mentioned vibration damping device is attached to the outside of the standing member, thereby damping the standing member. Can be granted.

なお、立設部材自体が垂直中空体であるとき、すなわち、図6に示される垂直中空体10が、それ自体立設部材を構成するときは、立設部材となる垂直中空体の内部に直接鋼製チェーンを吊り下げることによって、立設部材そのものに制振性を付与することもできる。   In addition, when the standing member itself is a vertical hollow body, that is, when the vertical hollow body 10 shown in FIG. 6 constitutes the standing member itself, it is directly inside the vertical hollow body serving as the standing member. By suspending the steel chain, it is possible to impart vibration damping to the standing member itself.

特公平04−26004号公報Japanese Patent Publication No. 04-26004

照明柱、標識柱、信号柱などの立設部材に、上記の特許文献1に記載の制振装置を組み込んでも、風、地震や車両走行に伴う路面振動などに起因する共振現象によって立設部材に揺れが生じることがあった。そして、これらの立設部材に揺れが生じると、発生する振動により、立設部材に取り付けられた器具の寿命が短くなり、さらに、照明柱の場合には、照明光が揺れて人に違和感を与える。   Even if the vibration control device described in Patent Document 1 is incorporated in a standing member such as an illumination column, a sign column, or a signal column, the standing member is caused by a resonance phenomenon caused by wind, earthquake, road vibration caused by vehicle traveling, or the like. There was a case of shaking. And if these standing members are shaken, the generated vibration shortens the life of the equipment attached to the standing members.Furthermore, in the case of an illumination column, the illumination light is shaken and the person feels uncomfortable. give.

その原因は、風、地震や車両走行に伴う路面振動などに起因する振動の場合は、振動数範囲が広いために、垂直中空体の内部に単に鋼製チェーンを吊り下げるだけの制振装置では、全振動数範囲の振動に対応できないためであることが分かった。特に、2〜3Hzの低周波の振動に対する制振効果が不充分であることが判明した。   In the case of vibrations caused by wind, earthquake or road surface vibrations due to vehicle running, etc., the vibration range is wide, so the vibration control device that simply suspends the steel chain inside the vertical hollow body It was found that this was because it could not handle vibrations in the entire frequency range. In particular, it has been found that the damping effect for low frequency vibrations of 2 to 3 Hz is insufficient.

本発明の目的は、高周波から低周波まで広範囲に周波数が変動する振動にも高い減衰性能を有し、かつ振動の方向にも左右されない制振性に優れた管状垂直立設部材を提供することにある。
An object of the present invention is to provide a tubular vertical standing member that has high damping performance even in vibrations whose frequencies fluctuate in a wide range from high frequencies to low frequencies, and is excellent in vibration damping properties that are not affected by the direction of vibration. It is in.

本発明者らは、種々検討の結果、高周波振動では吊り下げ部材が頻繁に垂直中空体に衝突することから、振動エネルギーを減衰させることができるが、低周波振動では、垂直中空管の振動周期と、吊り下げ部材における振動がその吊り下げ部材の支持点から先端まで伝播される時間とがともに大きくて、吊り下げ部材の振動モードと垂直中空体の振動モードとの間に有意差が生じないため、吊り下げ部材と垂直中空体の衝突頻度が少なくなり、吊り下げ部材が垂直中空部材の内壁に衝突することによる振動エネルギーの減衰がされにくいためであると考えた。   As a result of various studies, the present inventors have been able to attenuate the vibration energy because the suspension member frequently collides with the vertical hollow body in high-frequency vibration, but in low-frequency vibration, the vibration of the vertical hollow tube can be attenuated. Both the period and the time during which the vibration in the suspension member is propagated from the support point to the tip of the suspension member are large, resulting in a significant difference between the vibration mode of the suspension member and the vibration mode of the vertical hollow body. This is because the frequency of collision between the suspension member and the vertical hollow body is reduced, and the vibration energy is less likely to be attenuated by the collision of the suspension member with the inner wall of the vertical hollow member.

そして、低周波振動における制振性を高めるためには、吊り下げ部材と垂直中空体の衝突頻度を多くする代わりに、吊り下げ部材の外面と垂直中空体の内面の間隔を変えることによって、吊り下げ部材の外面が垂直中空体の内面に衝突する際の速度を大きくし、もって、低周波振動であっても吊り下げ部材が垂直中空部材の内壁に衝突する際のエネルギーを大きくできることに思い当たった。   And in order to improve the damping property in low frequency vibration, instead of increasing the collision frequency between the suspension member and the vertical hollow body, the distance between the outer surface of the suspension member and the inner surface of the vertical hollow body is changed. It was thought that the speed when the outer surface of the lowering member collides with the inner surface of the vertical hollow body can be increased, so that the energy when the hanging member collides with the inner wall of the vertical hollow member can be increased even with low frequency vibration. .

その結果、高周波振動だけでなく低周波振動に対しても制振性を高めるためには、垂直中空体の下部内径を上部内径よりも大きくすることによって、吊り下げ部材の外面と垂直中空体の内面の間隔を部分的に大きくしてやれば、低周波振動の際には、その部分で吊り下げ部材の外面が垂直中空体の内面に衝突する際の速度を大きくでき、もって低周波振動であっても衝突時のエネルギーを大きくすることができるから、低周波振動の際にはその間隔を大きくした部分において制振性を発揮でき、高周波振動の際にはその間隔が小さい部分において制振性を発揮できるのではないかとの着想を得た。   As a result, in order to improve the damping performance not only for high-frequency vibrations but also for low-frequency vibrations, the lower inner diameter of the vertical hollow body is made larger than the upper inner diameter, so that the outer surface of the suspension member and the vertical hollow body If the gap between the inner surfaces is partially increased, the speed at which the outer surface of the suspension member collides with the inner surface of the vertical hollow body can be increased at the time of low frequency vibration. However, since the energy at the time of collision can be increased, the vibration damping performance can be exhibited in the portion where the interval is increased in the case of low frequency vibration, and the vibration damping property is applied in the portion where the interval is small in the case of high frequency vibration. I got the idea that it could be demonstrated.

そして、下部内径が上部内径よりも大きい垂直中空体としては、たとえば、(a)内径が異なる2種類の管をテーパー状の短管によって接続してなる垂直中空体、(b)全体を一つのテーパー管として形成してなる垂直中空体、が考えられる。   For example, (a) a vertical hollow body in which two types of tubes having different inner diameters are connected by a tapered short tube, and (b) an entire hollow hollow body having a lower inner diameter larger than the upper inner diameter. A vertical hollow body formed as a tapered tube is conceivable.

これによって、高周波振動の際には吊り下げ部材の外面と垂直中空体の内面の間隔が小さい部分においては従来と同様に振動エネルギーを減衰させることができるとともに、低周波振動の際には吊り下げ部材の外面と垂直中空体の内面の間隔を大きくした部分において衝突エネルギーを大きくできるから、低周波振動においても振動エネルギーを減衰させることができるので、高周波から低周波まで広範囲に周波数が変動する振動にも高い減衰性能を有する制振装置を提供できる。   As a result, vibration energy can be attenuated in a portion where the distance between the outer surface of the suspension member and the inner surface of the vertical hollow body is small during high-frequency vibration as in the conventional case, and suspension is performed during low-frequency vibration. Since the collision energy can be increased at the part where the distance between the outer surface of the member and the inner surface of the vertical hollow body is increased, the vibration energy can be attenuated even at low frequency vibrations. In addition, it is possible to provide a vibration damping device having high damping performance.

また、内部に吊り下げる吊り下げ部材の軸心と垂直中空体の軸心を一致させることによって、振動の方向にも左右されない制振装置を提供できる。   In addition, by making the axis of the suspension member suspended inside and the axis of the vertical hollow body coincide with each other, it is possible to provide a vibration damping device that is not affected by the direction of vibration.

なお、低周波振動における制振性を高めるためには、吊り下げ部材の外面と垂直中空体の内面の間隔を大きくすることに加えて、吊り下げ部材の一部を質量の大きい部材に置き換えることによって、低周波振動の際にも制振性をさらに向上できることの着想を得た。   In addition, in order to improve the damping performance in low frequency vibration, in addition to increasing the distance between the outer surface of the hanging member and the inner surface of the vertical hollow body, a part of the hanging member is replaced with a member having a large mass. As a result, the idea of further improving the damping performance even in the case of low-frequency vibration was obtained.

本発明にかかる制振装置および制振性に優れた立設部材は、これらの知見と着想に基づいて完成されたものである。なお、制振性に優れた立設部材には、制振装置を立設部材の外部又は内部に取り付けることによって制振性を付与する場合と、立設部材それ自体を制振装置の一部に用いる場合の両方がある。   The vibration damping device and the standing member excellent in vibration damping performance according to the present invention have been completed based on these findings and ideas. In addition, the standing member having excellent vibration damping performance is provided with vibration damping performance by attaching the vibration damping device outside or inside the standing member, and the standing member itself is part of the vibration damping device. There are both cases to use for.

そして、その要旨は、次の(1)〜(4)の制振性に優れた管状立設部材である。以下、これらを総称して本発明ということもある。
The gist thereof is a tubular standing member having excellent vibration damping properties (1) to (4) below. Hereinafter, these may be collectively referred to as the present invention.

(1) 下部内径が上部内径よりも大きい金属製の管からなる垂直中空体とその内部に吊り下げられている吊り下げ部材からなる管状垂直立設部材であって、吊り下げ部材が金属体を複数個つなぎ合わせたもの又は金属製のチェーンからなり、かつ、垂直中空体の軸心と吊り下げ部材の軸心が一致する制振装置が外部又は内部に取り付けられており、そして吊り下げ部材の外面と垂直中空体の内面の間隔を上部よりも下部を大きくしていることを特徴とする制振性に優れた管状垂直立設部材。
(1) lower inner diameter a tubular vertical standing member ing from hanging member is hung vertically hollow body and its internal consisting of large metallic tube than the upper internal diameter, the suspension member is a metal member A vibration control device comprising a chain of metal or a metal chain, and a vibration control device in which the axis of the vertical hollow body coincides with the axis of the suspension member is attached to the outside or inside, and the suspension member A tubular vertical standing member excellent in vibration damping, characterized in that the distance between the outer surface and the inner surface of the vertical hollow body is made larger at the lower part than at the upper part.

(3) 下部内径が上部内径よりも大きい金属製の管からなる垂直中空体とその内部に吊り下げられている吊り下げ部材からなる管状垂直立設部材であって、吊り下げ部材金属体を複数個つなぎ合わせてなる上部部材と金属製チェーンの下部部材からなり、かつ、垂直中空体の軸心と吊り下げ部材の軸心が一致する制振装置が外部又は内部に取り付けられており、そして吊り下げ部材の外面と垂直中空体の内面の間隔を上部よりも下部を大きくしていることを特徴とする制振性に優れた管状垂直立設部材。
(3) lower inner diameter a tubular vertical standing member comprising a suspension member which is suspended and its internal vertical hollow body made of a metallic tube is greater than the upper inner diameter of the hanging member is a metal member A damping device comprising a plurality of upper members joined together and a lower member of a metal chain, wherein the shaft center of the vertical hollow body coincides with the shaft center of the suspension member is attached to the outside or the inside; and A tubular vertical erection member excellent in vibration damping, characterized in that the lower part of the interval between the outer surface of the suspension member and the inner surface of the vertical hollow body is made larger than the upper part .

(3) 下部内径が上部内径よりも大きい金属製の管からなる管状垂直立設部材であって、その内部に垂直立設部材の軸心と一致する軸心を有する吊り下げ部材が吊り下げられており、吊り下げ部材が金属体を複数個つなぎ合わせたもの又は金属製チェーンからなり、かつ、吊り下げ部材の外面と管状垂直立設部材の内面の間隔を上部よりも下部を大きくしていることを特徴とする制振性に優れた管状垂直立設部材。
(3) A tubular vertical erection member made of a metal pipe having a lower inner diameter larger than the upper inner diameter, and a suspending member having an axis that coincides with the axis of the vertical erection member is suspended inside The suspension member is formed by connecting a plurality of metal bodies or a metal chain, and the interval between the outer surface of the suspension member and the inner surface of the tubular vertical standing member is larger than the upper portion. A tubular vertical standing member excellent in vibration damping, characterized in that.

(4) 下部内径が上部内径よりも大きい金属製の管からなる管状垂直立設部材であって、その内部に垂直立設部材の軸心と一致する軸心を有する吊り下げ部材が吊り下げられており、吊り下げ部材金属体を複数個つなぎ合わせてなる上部部材と金属製チェーンの下部部材からなり、かつ、吊り下げ部材の外面と管状垂直立設部材の内面の間隔を上部よりも下部を大きくしていることを特徴とする制振性に優れた管状垂直立設部材。
(4) A tubular vertical erection member made of a metal pipe having a lower inner diameter larger than the upper inner diameter, and a suspending member having an axis that coincides with the axis of the vertical erection member is suspended therein The suspension member is composed of an upper member formed by joining a plurality of metal bodies and a lower member of a metal chain, and the interval between the outer surface of the suspension member and the inner surface of the tubular vertical standing member is lower than the upper portion. A tubular vertical standing member excellent in vibration damping , characterized by having a large diameter.

本発明により、高周波から低周波まで広範囲に周波数が変動する振動にも有効に対応する制振性に優れた管状垂直立設部材を得ることができる。
According to the present invention, it is possible to obtain a tubular vertical standing member having excellent vibration damping properties that can effectively cope with vibrations whose frequencies fluctuate in a wide range from high frequencies to low frequencies.

また、下部内径が上部内径よりも大きい金属製の管からなる垂直中空体とその内部に吊り下げられている吊り下げ部材からなり、かつ、垂直中空体の軸心と吊り下げ部材の軸心が一致する制振装置が外部又は内部に取り付けられており、そして吊り下げ部材の外面と垂直中空体の内面の間隔を上部よりも下部を大きくしていることを特徴とする制振性に優れた管状垂直立設部材であるから、振動の方向にも左右されないものが得られる。
In addition, a vertical hollow body made of a metal tube having a lower inner diameter larger than the upper inner diameter and a suspension member suspended therein, and the axis of the vertical hollow body and the axis of the suspension member are A matching vibration damping device is attached to the outside or the inside , and the distance between the outer surface of the suspension member and the inner surface of the vertical hollow body is made larger at the lower part than at the upper part . Since it is a tubular vertical standing member, a member that is not affected by the direction of vibration can be obtained.

さらに、下部内径が上部内径よりも大きい金属製の管からなる垂直立設部材であって、その内部に垂直立設部材の軸心と一致する軸心を有する吊り下げ部材が吊り下げられており、そして吊り下げ部材の外面と管状垂直立設部材の内面の間隔を上部よりも下部を大きくしていることを特徴とする制振性に優れた管状垂直立設部材であるから、振動の方向にも左右されないものが得られる。
Furthermore, a vertical standing member of the lower inner diameter is made of metallic tube larger than the upper internal diameter, has been lowered suspension member hanging has an axis which coincides with the axis of the vertical standing member therein Since the tubular vertical erection member is excellent in vibration damping, the distance between the outer surface of the suspending member and the inner surface of the tubular vertical erection member is larger than the upper part. Can be obtained regardless of

以下に、図面に基づいて、本発明を説明する。   Hereinafter, the present invention will be described with reference to the drawings.

図1及び図2に、吊り下げ部材として鋼製チェーンを用いた本発明に係る制振装置の一例を示す。   1 and 2 show an example of a vibration damping device according to the present invention using a steel chain as a suspension member.

図1は、下部内径が上部内径よりも大きい垂直中空体として、内径が異なる2種類の断面円形状の鋼管をテーパー状の短管によって接続して形成した垂直中空体を用いた、本発明装置の一例であり、(a)は制振装置の軸心を通る一つの縦断面図を示し、(b)は(a)に対して90°回転した方向の縦断面図を示している。   FIG. 1 shows a vertical hollow body having a lower inner diameter larger than an upper inner diameter, and a vertical hollow body formed by connecting two types of circular steel pipes having different inner diameters by a tapered short pipe. (A) shows one longitudinal sectional view passing through the axis of the vibration damping device, and (b) shows a longitudinal sectional view in a direction rotated by 90 ° with respect to (a).

制振装置1は、垂直中空体20と、その内部に吊り下げられた吊り下げ部材からなる。   The vibration damping device 1 includes a vertical hollow body 20 and a suspension member suspended in the vertical hollow body 20.

垂直中空体20は、内径が異なる2種類の断面円形状の鋼管をテーパー状の短管によって接続して形成された垂直中空体が用いられている。この例における制振装置を構成する垂直中空体は、全長1.6m、重量13.0kgの断面円形の鋼管である。上部の鋼管が外径76.3mm、肉厚4.2mm、内径67.9mm、長さ0.8m、そして、下部の鋼管が外径89.1mm、肉厚4.2mm、内径80.7mm、長さ0.8mであり、さらに、上部と下部を接続するテーパー状の短管は上部外径76.3mm、下部外径89.1mm、肉厚4.2mm、上部内径67.9mm、下部内径80.7mm、長さ0.1mであった。   As the vertical hollow body 20, a vertical hollow body formed by connecting two types of circular steel pipes having different inner diameters with a tapered short pipe is used. The vertical hollow body constituting the vibration damping device in this example is a steel pipe having a circular cross section having a total length of 1.6 m and a weight of 13.0 kg. The upper steel pipe has an outer diameter of 76.3 mm, a wall thickness of 4.2 mm, an inner diameter of 67.9 mm, a length of 0.8 m, and the lower steel pipe has an outer diameter of 89.1 mm, a wall thickness of 4.2 mm, an inner diameter of 80.7 mm, It is 0.8m long, and the tapered short tube connecting the upper and lower parts has an upper outer diameter of 76.3mm, a lower outer diameter of 89.1mm, a wall thickness of 4.2mm, an upper inner diameter of 67.9mm, and a lower inner diameter. The length was 80.7 mm and the length was 0.1 m.

そして、吊り下げ部材としては鋼製チェーン11が用いられており、この鋼製チェーン11の上端は、垂直中空体20の上部に設置された蓋板12に固定して取り付けられた固定フック15によって支持されている。したがって、鋼製チェーン11は上端を除いて非固定の自由振動部を形成している。ここで用いた鋼製チェーンは、チェーン径16mm、1リンクの寸法として長さ80mm×幅56mmの鋼製リンクの29個からなる、全長142.4cm、全重量7846gであった。   A steel chain 11 is used as a suspension member, and the upper end of the steel chain 11 is fixed by a fixing hook 15 fixedly attached to a cover plate 12 installed on the upper part of the vertical hollow body 20. It is supported. Therefore, the steel chain 11 forms an unfixed free vibration part except for the upper end. The steel chain used here had a total length of 142.4 cm and a total weight of 7846 g, consisting of 29 steel links having a chain diameter of 16 mm and a link size of 80 mm length × 56 mm width.

なお、鋼製チェーン11の軸心と垂直中空体20の軸心を一致させているため、鋼製チェーン11の外面と垂直中空体20の内面との間隔は、上部の間隔d1よりも下部の間隔d2の方が大きいが、振動のない状態では、同じ高さにおいては円形鋼管の内部において等価に維持されている。ここでは、吊り下げ部材の外面と垂直中空体の内面との間隔は、上部の間隔d1は5.95mm、下部の間隔d2は12.35mmであった。 Since the axis of the steel chain 11 and the axis of the vertical hollow body 20 are aligned, the distance between the outer surface of the steel chain 11 and the inner surface of the vertical hollow body 20 is lower than the upper distance d 1. The distance d 2 is larger, but in a state where there is no vibration, the same height is maintained within the circular steel pipe equivalently. Here, as for the distance between the outer surface of the suspension member and the inner surface of the vertical hollow body, the upper space d 1 was 5.95 mm and the lower space d 2 was 12.35 mm.

図2は、下部内径が上部内径よりも大きい垂直中空体として、全体を一つのテーパー管として形成してなる断面円形状の垂直中空体を用いた、本発明装置の一例であり、(a)は制振装置の軸心を通る一つの縦断面図を示し、(b)は(a)に対して90°回転した方向の縦断面図を示している。   FIG. 2 shows an example of the device of the present invention using a vertical hollow body having a circular cross section formed as a single tapered tube as a vertical hollow body having a lower inner diameter larger than the upper inner diameter. Shows a longitudinal sectional view passing through the axis of the damping device, and (b) shows a longitudinal sectional view in a direction rotated by 90 ° with respect to (a).

制振装置1は、垂直中空体30と、その内部に吊り下げられた吊り下げ部材からなる。ここでは、吊り下げ部材として図1に示したものと同じ鋼製チェーン11が用いられており、この鋼製チェーン11の上端は、垂直中空体の上部に設置された蓋板12に固定して取り付けられた固定フック15によって支持されている点も、図1と同じである。   The vibration damping device 1 includes a vertical hollow body 30 and a suspension member suspended in the vertical hollow body 30. Here, the same steel chain 11 as shown in FIG. 1 is used as a suspension member, and the upper end of the steel chain 11 is fixed to a cover plate 12 installed at the upper part of a vertical hollow body. It is the same as that of FIG. 1 in that it is supported by the fixed hook 15 attached.

垂直中空体30は、全体を一つのテーパー管として形成してなる断面円形状の垂直中空体が用いられている点で、図1に示された垂直中空体20とは異なる。このテーパー状垂直中空体は、全長1.6m、重量11.6kgの断面円形の鋼管である。この鋼管は、上部外径76.3mm、下部外径89.1mm、肉厚4.2mm、上部内径67.9mm、下部内径80.7mmであった。   The vertical hollow body 30 is different from the vertical hollow body 20 shown in FIG. 1 in that a vertical hollow body having a circular cross section formed as a single tapered tube is used. This tapered vertical hollow body is a steel pipe having a total length of 1.6 m and a weight of 11.6 kg and a circular cross section. This steel pipe had an upper outer diameter of 76.3 mm, a lower outer diameter of 89.1 mm, a wall thickness of 4.2 mm, an upper inner diameter of 67.9 mm, and a lower inner diameter of 80.7 mm.

なお、鋼製チェーン11の軸心と垂直中空体30の軸心を一致させているため、鋼製チェーン11の外面と垂直中空体30の内面との間隔は、上部の間隔d1よりも下部の間隔d2の方が大きいが、振動のない状態では、同じ高さにおいては円形鋼管の内部において等価に維持されている。ここでは、吊り下げ部材の外面と垂直中空体の内面との間隔は、上部の間隔d1は5.95mm、下部の間隔d2は12.35mmであった。 Incidentally, since the match the axis of the axis and the vertical hollow body 30 of the steel chain 11, the distance between the inner surface of the outer surface and the vertical hollow body 30 of the steel chain 11, lower than the distance d 1 of the upper The distance d 2 is larger, but in a state where there is no vibration, the same height is maintained within the circular steel pipe equivalently. Here, as for the distance between the outer surface of the suspension member and the inner surface of the vertical hollow body, the upper space d 1 was 5.95 mm and the lower space d 2 was 12.35 mm.

このように、垂直中空体の内径が上部と下部とで異なっている場合には、高周波振動の場合の高い制振性能を保持した上で、低周波振動であっても衝突1回当たりの減衰エネルギーが大きくなることから、振動方向に関わりなく、高周波から低周波までの広範囲に振動数が変動する振動にも高い減衰性能を有する制振装置を提供することができる。   As described above, when the inner diameter of the vertical hollow body is different between the upper part and the lower part, the high damping performance in the case of the high-frequency vibration is maintained and the damping per collision is performed even in the case of the low-frequency vibration. Since the energy increases, it is possible to provide a vibration damping device having high damping performance even for vibrations whose frequency fluctuates over a wide range from high frequencies to low frequencies regardless of the vibration direction.

垂直中空体の形状は、例示した形状に限定されるものではなく、垂直中空体の内径が上部と下部とで異なっている形状であれば構わない。そして、その寸法も例示した寸法に限定されるものではない。   The shape of the vertical hollow body is not limited to the illustrated shape, and may be any shape as long as the inner diameter of the vertical hollow body is different between the upper part and the lower part. The dimensions are not limited to the illustrated dimensions.

垂直中空体の材料としては、鋼管のほか、ステンレス鋼管、アルミニウム管などの金属管や樹脂管を用いてもよい。強度及び耐久性の観点からは鋼管が好ましい。防錆性の観点からはステンレス鋼管を用いるか、又は、鋼管に溶融亜鉛めっきや塗装等の防錆処理を施して用いるのが好ましい。   As a material for the vertical hollow body, a steel tube, a metal tube such as a stainless steel tube, an aluminum tube, or a resin tube may be used. A steel pipe is preferable from the viewpoint of strength and durability. From the viewpoint of rust prevention, it is preferable to use a stainless steel pipe or to use the steel pipe after subjecting the steel pipe to a rust prevention treatment such as hot dip galvanization or painting.

また、垂直中空体の断面形状は、特に限定するものではなく、円形のほか、八角形や六角形などの多角形でもよい。すべての方向の揺れに対しても制振効果が必要な場合には、円形の断面を採用するのが好ましい。   In addition, the cross-sectional shape of the vertical hollow body is not particularly limited, and may be a circle or a polygon such as an octagon or a hexagon. When a vibration control effect is required even for shaking in all directions, it is preferable to adopt a circular cross section.

吊り下げ部材の重量は、上記の数値に限定するものではなく、600〜31000g程度であればよい。   The weight of the suspension member is not limited to the above numerical value, and may be about 600 to 31000 g.

吊り下げ部材は、上記の鋼製チェーンの形状に限定するものではなく、チェーン径6〜25mm、1リンクの寸法として長さ30〜125mm×幅21〜88mm、全長80〜220cm、全重量600〜31000gの鋼製チェーンを用いることができる。なお、鋼製チェーンのほか、ステンレス鋼チェーンを用いても良い。強度及び耐久性の観点からは、鋼製チェーンが好ましい。防錆性の観点からはステンレス鋼チェーンを用いるか、又は、鋼製チェーンに溶融亜鉛めっき等の防錆処理を施して用いるのが好ましい。   The suspension member is not limited to the shape of the steel chain described above. The chain diameter is 6 to 25 mm, the length of one link is 30 to 125 mm × width is 21 to 88 mm, the total length is 80 to 220 cm, and the total weight is 600 to A 31000 g steel chain can be used. In addition to the steel chain, a stainless steel chain may be used. From the viewpoint of strength and durability, a steel chain is preferable. From the viewpoint of rust prevention, it is preferable to use a stainless steel chain or to use a steel chain after subjecting it to a rust prevention treatment such as hot dip galvanization.

また、チェーンに限定するものではなく、金属体を複数個つなぎ合わせたものを用いることができる。例えば、直径21〜99mmの金属球の2〜61個を、長さ15〜74mm、外径2.6〜9mmの鋼線材でつなぎ合わせることで形成することができる。金属体の材料としては、鋼のほか、ステンレス鋼やアルミニウムが用いられる。
Further, the chain is not limited to a chain, and a plurality of metal bodies connected together can be used. For example, it can be formed by connecting 2 to 61 metal balls having a diameter of 21 to 99 mm with steel wires having a length of 15 to 74 mm and an outer diameter of 2.6 to 9 mm. As a material of the metal body, in addition to steel, stainless steel or aluminum Ru is used.

金属製の垂直中空体と金属製の吊り下げ部材を用いると、相互の衝撃音が大きくなるが、この衝撃音を抑制したいときは垂直中空体及び/又は吊り下げ部材の表面をゴム等の弾性体でライニング又は被覆するのが好ましい。   When a metal vertical hollow body and a metal suspension member are used, the impact noise increases. To suppress this impact noise, the surface of the vertical hollow body and / or suspension member is made of elastic material such as rubber. The body is preferably lined or covered.

吊り下げ部材の外面と垂直中空体の内面との上部間隔d1と下部間隔d2は、上記の数値に限定するものではなく、それぞれ、3〜15mm程度及び6〜22mm程度であればよい。また、上部間隔d1と下部間隔d2の差は、3〜13mm程度あればよい。 The upper distance d 1 and the lower distance d 2 between the outer surface of the suspension member and the inner surface of the vertical hollow body are not limited to the above numerical values, and may be about 3 to 15 mm and about 6 to 22 mm, respectively. Further, the difference between the upper space d 1 and the lower space d 2 may be about 3 to 13 mm.

次に、図3及び図4に、吊り下げ部材として、上部部材が鋼球を複数個つなぎ合わせたものからなり、そして、下部部材が鋼製チェーンからなるものを用いた本発明に係る制振装置の一例を示す。   Next, in FIG. 3 and FIG. 4, as the suspension member, the upper member is composed of a plurality of steel balls joined together, and the lower member is composed of a steel chain. An example of an apparatus is shown.

図3は、下部内径が上部内径よりも大きい垂直中空体として、内径が異なる2種類の断面円形状の鋼管をテーパー状の短管によって接続して形成した垂直中空体を用いた、本発明装置の一例であり、(a)は制振装置の軸心を通る一つの縦断面図を示し、(b)は(a)に対して90°回転した方向の縦断面図を示している。   FIG. 3 shows a vertical hollow body having a lower inner diameter larger than an upper inner diameter, and a vertical hollow body formed by connecting two types of circular steel pipes having different inner diameters with a tapered short pipe. (A) shows one longitudinal section passing through the axis of the vibration damping device, and (b) shows a longitudinal section in a direction rotated by 90 ° with respect to (a).

制振装置1は、垂直中空体20と、その内部に吊り下げられたの吊り下げ部材からなる。   The vibration damping device 1 includes a vertical hollow body 20 and a suspension member suspended in the vertical hollow body 20.

垂直中空体20は、内径が異なる2種類の断面円形状の鋼管をテーパー状の短管によって接続して形成された垂直中空体が用いられている。この例における制振装置を構成する垂直中空体は、全長1.6m、重量11.6kgの断面円形の鋼管である。上部の鋼管が外径76.3mm、肉厚4.2mm、内径67.9mm、長さ0.8m、そして、下部の鋼管が外径89.1mm、肉厚4.2mm、内径80.7mm、長さ0.8mであり、さらに、上部と下部を接続するテーパー状の短管は上部外径76.3mm、下部外径89.1mm、肉厚4.2mm、上部内径67.9mm、下部内径80.7mm、長さ0.1mであった。   As the vertical hollow body 20, a vertical hollow body formed by connecting two types of circular steel pipes having different inner diameters with a tapered short pipe is used. The vertical hollow body constituting the vibration damping device in this example is a steel pipe having a circular section with a total length of 1.6 m and a weight of 11.6 kg. The upper steel pipe has an outer diameter of 76.3 mm, a wall thickness of 4.2 mm, an inner diameter of 67.9 mm, a length of 0.8 m, and the lower steel pipe has an outer diameter of 89.1 mm, a wall thickness of 4.2 mm, an inner diameter of 80.7 mm, It is 0.8m long, and the tapered short tube connecting the upper and lower parts has an upper outer diameter of 76.3mm, a lower outer diameter of 89.1mm, a wall thickness of 4.2mm, an upper inner diameter of 67.9mm, and a lower inner diameter. The length was 80.7 mm and the length was 0.1 m.

吊り下げ部材は、上部吊り下げ部材と下部吊り下げ部材が別種の部材からなる点で、図1に示された吊り下げ部材とは異なる。この吊り下げ部材は、上部部材が金属球8を5個つなぎ合わせたものからなり、そして、下部吊り下げ部材が鋼製チェーン11からなる。この上部吊り下げ部材の上端は、垂直中空体10の上部に設置された蓋板12に取り付けられた固定フック15によって、支持されている。   The suspension member is different from the suspension member shown in FIG. 1 in that the upper suspension member and the lower suspension member are made of different types of members. In this suspension member, the upper member is composed of five metal balls 8 joined together, and the lower suspension member is composed of a steel chain 11. The upper end of the upper suspension member is supported by a fixing hook 15 attached to a cover plate 12 installed on the upper part of the vertical hollow body 10.

上部吊り下げ部材は、直径56mmの721gからなる鋼球の7個を、長さ42mm、外径4mmの鋼線材でつなぎ合わせて用いた。そして、下部吊り下げ部材は、チェーン径16mm、1リンクの寸法として長さ80mm×幅56mmの鋼製リンクの18個からなる、全長70.4cm、全重量3879gの鋼製チェーンを用いた。吊り下げ部材の単位長さ当たりの質量は、それぞれ、上部部材が7.51g/mm、そして、下部吊り下げ部材が5.56g/mmであった。   As the upper suspension member, seven steel balls made of 721 g having a diameter of 56 mm were connected by a steel wire having a length of 42 mm and an outer diameter of 4 mm. The lower suspension member was a steel chain having a total length of 70.4 cm and a total weight of 3879 g, comprising 18 steel links having a chain diameter of 16 mm and a link size of 80 mm length × 56 mm width. The mass per unit length of the suspension member was 7.51 g / mm for the upper member and 5.56 g / mm for the lower suspension member, respectively.

なお、吊り下げ部材の軸心と垂直中空体20の軸心を一致させているため、吊り下げ部材の外面と垂直中空体20の内面との間隔は、最上部の間隔d1よりも最下部の間隔d2の方が大きいが、振動のない状態では、同じ高さにおいては円形鋼管の内部において等価に維持されている。ここでは、吊り下げ部材の外面と垂直中空体の内面との間隔は、最上部の間隔d1は5.95mm、最下部の間隔d2は12.35mmであった。 Incidentally, since the match the axis of the axis of suspension member vertical hollow body 20, the distance between the outer and inner surfaces of the vertical hollow body 20 of the suspension member, the bottom than the distance d 1 between the top The distance d 2 is larger, but in a state where there is no vibration, the same height is maintained within the circular steel pipe equivalently. Here, as for the distance between the outer surface of the suspension member and the inner surface of the vertical hollow body, the uppermost distance d 1 was 5.95 mm and the lowermost distance d 2 was 12.35 mm.

図4は、下部内径が上部内径よりも大きい垂直中空体として、全体を一つのテーパー管として形成してなる断面円形状の垂直中空体を用いた、本発明装置の一例であり、(a)は制振装置の軸心を通る一つの縦断面図を示し、(b)は(a)に対して90°回転した方向の縦断面図を示している。   FIG. 4 shows an example of the device of the present invention using a vertical hollow body having a circular cross section formed as a single tapered tube as a vertical hollow body having a lower inner diameter larger than the upper inner diameter. Shows a longitudinal sectional view passing through the axis of the damping device, and (b) shows a longitudinal sectional view in a direction rotated by 90 ° with respect to (a).

制振装置1は、垂直中空体30と、その内部に吊り下げられた吊り下げ部材からなる。ここでは、吊り下げ部材として図3に示したものと同じもの、すなわち、上部部材が金属球8を5個つなぎ合わせたものからなり、そして、下部吊り下げ部材が鋼製チェーン11からなる吊り下げ部材が用いられている。この吊り下げ部材の上端は、垂直中空体の上部に設置された蓋板12に固定して取り付けられた固定フック15によって支持されている点も、図3と同じである。   The vibration damping device 1 includes a vertical hollow body 30 and a suspension member suspended in the vertical hollow body 30. Here, the suspension member is the same as that shown in FIG. 3, that is, the upper member is composed of five metal balls 8 joined together, and the lower suspension member is composed of a steel chain 11. A member is used. The upper end of the suspension member is also supported by a fixing hook 15 fixedly attached to the cover plate 12 installed on the upper part of the vertical hollow body, as in FIG.

垂直中空体30は、全体を一つのテーパー管として形成してなる断面円形状の垂直中空体が用いられている点で、図3に示された垂直中空体20とは異なる。このテーパー状垂直中空体は、全長1.6m、重量11.6kgの断面円形の鋼管である。この鋼管は、上部外径76.3mm、下部外径89.1mm、肉厚4.2mm、上部内径67.9mm、下部内径80.7mmであった。   The vertical hollow body 30 is different from the vertical hollow body 20 shown in FIG. 3 in that a vertical hollow body having a circular cross section formed as a single tapered tube is used. This tapered vertical hollow body is a steel pipe having a total length of 1.6 m and a weight of 11.6 kg and a circular cross section. This steel pipe had an upper outer diameter of 76.3 mm, a lower outer diameter of 89.1 mm, a wall thickness of 4.2 mm, an upper inner diameter of 67.9 mm, and a lower inner diameter of 80.7 mm.

なお、吊り下げ部材の軸心と垂直中空体30の軸心を一致させているため、吊り下げ部材の外面と垂直中空体30の内面との間隔は、最上部の間隔d1よりも最下部の間隔d2の方が大きいが、振動のない状態では、同じ高さにおいては円形鋼管の内部において等価に維持されている。ここでは、吊り下げ部材の外面と垂直中空体の内面との間隔は、最上部の間隔d1は5.95mm、最下部の間隔d2は12.35mmであった。 Since the axis of the suspension member and the axis of the vertical hollow body 30 are aligned, the distance between the outer surface of the suspension member and the inner surface of the vertical hollow body 30 is lower than the uppermost distance d 1. The distance d 2 is larger, but in a state where there is no vibration, the same height is maintained within the circular steel pipe equivalently. Here, as for the distance between the outer surface of the suspension member and the inner surface of the vertical hollow body, the uppermost distance d 1 was 5.95 mm and the lowermost distance d 2 was 12.35 mm.

このように、垂直中空体の内径が上部と下部とで異なっている上に、さらに、吊り下げ部材の一部を質量の大きい部材に置き換えると、低周波振動であっても衝突1回当たりの減衰エネルギーが大きくなることから、振動方向に関わりなく、高周波から低周波までの広範囲に振動数が変動する振動にも高い減衰性能を有する制振装置を提供することができる。   In this way, the inner diameter of the vertical hollow body is different between the upper part and the lower part, and if a part of the suspension member is replaced with a member having a large mass, even if it is a low frequency vibration, the per one collision Since the damping energy becomes large, it is possible to provide a damping device having high damping performance even for vibrations whose frequency fluctuates over a wide range from high frequencies to low frequencies regardless of the vibration direction.

垂直中空体の形状は、例示した形状に限定されるものではなく、垂直中空体の内径が上部と下部とで異なっている形状であれば構わない。そして、その寸法も例示した寸法に限定されるものではない。   The shape of the vertical hollow body is not limited to the illustrated shape, and may be any shape as long as the inner diameter of the vertical hollow body is different between the upper part and the lower part. The dimensions are not limited to the illustrated dimensions.

垂直中空体の材料としては、鋼管のほか、ステンレス鋼管、アルミニウム管などの金属管や樹脂管を用いてもよい。強度及び耐久性の観点からは鋼管が好ましい。防錆性の観点からはステンレス鋼管を用いるか、又は、鋼管に溶融亜鉛めっきや塗装等の防錆処理を施して用いるのが好ましい。   As a material for the vertical hollow body, a steel tube, a metal tube such as a stainless steel tube, an aluminum tube, or a resin tube may be used. A steel pipe is preferable from the viewpoint of strength and durability. From the viewpoint of rust prevention, it is preferable to use a stainless steel pipe or to use the steel pipe after subjecting the steel pipe to a rust prevention treatment such as hot dip galvanization or painting.

また、垂直中空体の断面形状は、特に限定するものではなく、円形のほか、八角形や六角形などの多角形でもよい。すべての方向の揺れに対しても制振効果が必要な場合には、円形の断面を採用するのが好ましい。   In addition, the cross-sectional shape of the vertical hollow body is not particularly limited, and may be a circle or a polygon such as an octagon or a hexagon. When a vibration control effect is required even for shaking in all directions, it is preferable to adopt a circular cross section.

吊り下げ部材の単位長さ当たりの質量は、上記の数値に限定するものではなく、それぞれ、上部部材が1.0〜27g/mm程度、そして、下部吊り下げ部材が0.7〜14g/mm程度であればよい。   The mass per unit length of the suspension member is not limited to the above values, and the upper member is about 1.0 to 27 g / mm, and the lower suspension member is 0.7 to 14 g / mm, respectively. Any degree is acceptable.

吊り下げ部材は、例示したものは、上部部材が金属球8を複数個つなぎ合わせたものからなり、そして、下部吊り下げ部材が鋼製チェーン11からなる吊り下げ部材であるが、上部部材として金属体を複数個つなぎ合わせたものを用いることができる。例えば、直径21〜99mmの金属球の2〜20個を、長さ15〜74mm、外径2.6〜9mmの鋼線材でつなぎ合わせることで形成することができる。金属体の材料としては、鋼のほか、ステンレス鋼やアルミニウムが用いられる。   As for the suspension member, the illustrated suspension member is a suspension member in which the upper member is formed by connecting a plurality of metal balls 8 and the lower suspension member is a suspension member made of a steel chain 11. A combination of a plurality of bodies can be used. For example, it can be formed by connecting 2 to 20 metal balls having a diameter of 21 to 99 mm with steel wires having a length of 15 to 74 mm and an outer diameter of 2.6 to 9 mm. As a material of the metal body, stainless steel or aluminum is used in addition to steel.

また、下部部材として、上記の鋼製チェーンの形状に限定するものではなく、チェーン径6〜25mm、1リンクの寸法として長さ30〜125mm×幅21〜88mm、全長40〜110cm、全重量300〜15000gの鋼製チェーンを用いることができる。なお、鋼製チェーンのほか、ステンレス鋼チェーンを用いても良い。強度及び耐久性の観点からは、鋼製チェーンが好ましい。防錆性の観点からはステンレス鋼チェーンを用いるか、又は、鋼製チェーンに溶融亜鉛めっき等の防錆処理を施して用いるのが好ましい。
The lower member is not limited to the shape of the steel chain described above. The chain diameter is 6 to 25 mm, the size of one link is 30 to 125 mm × width 21 to 88 mm, the total length is 40 to 110 cm, and the total weight is 300. A steel chain of ˜15000 g can be used. In addition to the steel chain, a stainless steel chain may be used. From the viewpoint of strength and durability, a steel chain is preferable. Or from the viewpoint of corrosion resistance using stainless steel chain, or have the preferred use subjected to anti-rust treatment such as galvanizing a steel chain.

金属製の垂直中空体と金属製の吊り下げ部材を用いると、相互の衝撃音が大きくなるが、この衝撃音を抑制したいときは垂直中空体及び/又は吊り下げ部材の表面をゴム等の弾性体でライニング又は被覆するのが好ましい。   When a metal vertical hollow body and a metal suspension member are used, the impact noise increases. To suppress this impact noise, the surface of the vertical hollow body and / or suspension member is made of elastic material such as rubber. The body is preferably lined or covered.

吊り下げ部材の外面と垂直中空体の内面との最上部間隔d1と最下部間隔d2は、上記の数値に限定するものではなく、それぞれ、3〜15mm程度及び6〜22mm程度であればよい。また、最上部間隔d1と最下部間隔d2の差は、3〜13mm程度あればよい。 The uppermost interval d 1 and the lowermost interval d 2 between the outer surface of the suspension member and the inner surface of the vertical hollow body are not limited to the above numerical values, and are about 3 to 15 mm and about 6 to 22 mm, respectively. Good. Further, the difference between the uppermost interval d 1 and the lowermost interval d 2 may be about 3 to 13 mm.

以上、制振装置自体の説明をしてきたが、立設部材が垂直中空体であるとき、すなわち、図1〜4に示される垂直中空体10が、それ自体立設部材の一部を構成するときは、立設部材たる垂直中空体の内部に直接吊り下げ部材を吊り下げることによって、立設部材そのものに制振性を付与することができる。   Although the vibration damping device itself has been described above, when the standing member is a vertical hollow body, that is, the vertical hollow body 10 shown in FIGS. 1 to 4 itself constitutes a part of the standing member. In some cases, vibration control can be imparted to the standing member itself by hanging the hanging member directly inside the vertical hollow body as the standing member.

これに対して、立設部材が中空体ではない場合や中空体であっても傾斜している場合には、上記の制振装置を、立設部材の外部又は内部に取り付けることによって、立設部材に制振性を付与することができる。もちろん、立設部材が垂直中空体の場合であっても、立設部材の外部又は内部に別途制振装置を取り付けることによって、立設部材に制振性を付与することができることは言うまでもない。   On the other hand, when the standing member is not a hollow body or is inclined even if it is a hollow body, the above-described vibration damping device is attached to the outside or the inside of the standing member to stand upright. Damping property can be imparted to the member. Of course, even if the standing member is a vertical hollow body, it is needless to say that the standing member can be provided with damping properties by separately attaching a damping device to the outside or inside of the standing member.

立設部材に大きな制振性を付与するためには、立設部材が最大変位振幅を示す部位に制振装置を取り付けるか、又は、立設部材が垂直中空体であるときは立設部材自体を制振装置の一部として構成することによって、制振性を付与するのが良い。また、各次振動モードに対処するためには、制振装置を立設部材の複数位置に取り付けることが好ましい。   In order to give the standing member a great vibration damping property, a damping device is attached to a portion where the standing member shows the maximum displacement amplitude, or when the standing member is a vertical hollow body, the standing member itself Is preferably provided as a part of the vibration damping device. Moreover, in order to cope with each next vibration mode, it is preferable to attach the vibration damping device to a plurality of positions of the standing member.

本発明に係る制振装置を取り付ける適用対象は、振動によって揺れが生じる立設部材であり、照明柱、標識柱、信号柱のほか、吊り橋における吊り塔部材にも適用することができる。   The application object to which the vibration damping device according to the present invention is attached is a standing member that generates vibration due to vibration, and can be applied to a suspension tower member in a suspension bridge in addition to an illumination column, a sign column, and a signal column.

図5は、本発明に係る制振装置1を立設部材の外部の2個所に取り付けたときの一例を示す。   FIG. 5 shows an example when the vibration damping device 1 according to the present invention is attached to two locations outside the standing member.

この立設部材は、照明灯7を張出部材5の先端に取り付けてなる照明柱2であり、基礎3の上に断面円形の鋼管4が立設され、鋼管4の最上部からほぼ水平に張出部材5が張り出しており、その張出部材を支える補強ステー6が設けられている。そして、上記の制振装置1が鋼管4の外周の上部と中部の2個所にボルト(図示せず)によって取り付けられている。   This standing member is an illuminating column 2 in which an illuminating lamp 7 is attached to the tip of a projecting member 5. The overhang member 5 overhangs, and a reinforcing stay 6 that supports the overhang member is provided. And the said damping device 1 is attached to the upper part of the outer periphery of the steel pipe 4, and two places of the center part with the volt | bolt (not shown).

風、地震や車両走行に伴う路面振動などに起因する共振現象によって、照明柱2の鋼管に揺れが生じると、その揺れが照明柱に取り付けられた制振装置1に伝わり、励振が起こる。そのとき、垂直中空体と吊り下げ部材からなる制振装置1が作動するが、単位長さ当たりの質量の大きい上部吊り下げ部材と小さい下部吊り下げ部材とは、低周波振動の際も高周波振動の際も、垂直中空体10の内壁面に衝突して、振動エネルギーを十分に減衰させることができる。したがって、垂直中空体の振動エネルギーが散逸し、立設部材である照明柱2の振動が制止される。   When a vibration occurs in the steel pipe of the lighting column 2 due to a resonance phenomenon caused by wind, earthquake, road vibration caused by traveling of the vehicle, etc., the vibration is transmitted to the vibration control device 1 attached to the lighting column, and excitation occurs. At that time, the vibration damping device 1 composed of the vertical hollow body and the suspension member is operated, but the upper suspension member having a large mass per unit length and the lower suspension member having a large mass have high frequency vibrations even in the case of low frequency vibrations. In this case, the vibration energy can be sufficiently attenuated by colliding with the inner wall surface of the vertical hollow body 10. Therefore, the vibration energy of the vertical hollow body is dissipated, and the vibration of the illumination column 2 which is a standing member is restrained.

本発明により、高周波から低周波まで広範囲に周波数が変動する振動にも有効に対応する制振性に優れた立設部材を得ることができる。また、内部に吊り下げ部材が吊り下げられており、そして吊り下げ部材の外面と垂直中空体または管状垂直立設部材の内面の間隔を上部よりも下部を大きくしているから、振動の方向にも左右されない制振性に優れた管状垂直立設部材が得られる。
According to the present invention, it is possible to obtain a standing member having excellent vibration damping properties that can effectively cope with vibration whose frequency fluctuates over a wide range from high frequency to low frequency. Further, a suspended is member suspended therein, and reduce the outer surface and spacing of the inner surface of the vertical hollow or tubular vertical standing member of members because by increasing the lower than the upper suspension, the direction of vibration Thus, a tubular vertical standing member having excellent vibration damping properties that is not affected is obtained.

本発明にかかる制振装置の一例を示す縦断面図である。It is a longitudinal section showing an example of a vibration damping device concerning the present invention. 本発明にかかる制振装置の他の一例を示す縦断面図である。It is a longitudinal cross-sectional view which shows another example of the damping device concerning this invention. 本発明にかかる制振装置の他の一例を示す縦断面図である。It is a longitudinal cross-sectional view which shows another example of the damping device concerning this invention. 本発明にかかる制振装置の他の一例を示す縦断面図である。It is a longitudinal cross-sectional view which shows another example of the damping device concerning this invention. 本発明に係る制振装置1を立設部材の外部の2個所に取り付けたときの一例を示す図である。It is a figure which shows an example when the damping device 1 which concerns on this invention is attached to two places outside the standing member. 特許文献1に記載の従来の制振装置の一例を示す縦断面図である。It is a longitudinal cross-sectional view which shows an example of the conventional damping device described in patent document 1.

符号の説明Explanation of symbols

1 制振装置
2 照明柱
3 基礎
4 断面円形の鋼管
5 張出部材
6 補強ステー
7 照明灯
8 金属球
10 全長にわたって同一径の垂直中空体
11 鋼製チェーン
12 蓋板
15 固定フック
20 本発明に用いる垂直中空体
30 本発明に用いる垂直中空体
40 本発明に用いる垂直中空体
50 本発明に用いる垂直中空体
d 吊り下げ部材の外面と垂直中空体の内面の間隔
1 最上部における吊り下げ部材の外面と垂直中空体の内面の間隔
2 最下部における吊り下げ部材の外面と垂直中空体の内面の間隔
DESCRIPTION OF SYMBOLS 1 Damping device 2 Illumination pillar 3 Foundation 4 Steel pipe with a circular cross section 5 Overhang member 6 Reinforcement stay 7 Illumination lamp 8 Metal ball 10 Vertical hollow body of the same diameter over the entire length 11 Steel chain 12 Cover plate 15 Fixed hook 20 In the present invention Vertical hollow body 30 used Vertical hollow body used in the present invention 40 Vertical hollow body used in the present invention 50 Vertical hollow body used in the present invention d Distance between the outer surface of the suspension member and the inner surface of the vertical hollow body d 1 Hanging member at the top Between the outer surface of the vertical hollow body and the inner surface of the vertical hollow body d 2

Claims (4)

下部内径が上部内径よりも大きい金属製の管からなる垂直中空体とその内部に吊り下げられている吊り下げ部材からなる管状垂直立設部材であって、吊り下げ部材が金属体を複数個つなぎ合わせたもの又は金属製のチェーンからなり、かつ、垂直中空体の軸心と吊り下げ部材の軸心が一致する制振装置が外部又は内部に取り付けられており、そして吊り下げ部材の外面と垂直中空体の内面の間隔を上部よりも下部を大きくしていることを特徴とする制振性に優れた管状垂直立設部材。 Lower inner diameter a tubular vertical standing member ing from hanging member is hung vertically hollow body and its internal consisting of large metallic tube than the upper internal diameter, suspension member is a plurality of metal bodies A vibration control device comprising a chain or a metal chain and having a vertical hollow body and a suspension member whose axial center coincides with each other is attached to the outside or the inside, and the outer surface of the suspension member A tubular vertical standing member excellent in vibration damping, characterized in that the interval between the inner surfaces of a vertical hollow body is made larger at the lower part than at the upper part. 下部内径が上部内径よりも大きい金属製の管からなる垂直中空体とその内部に吊り下げられている吊り下げ部材からなる管状垂直立設部材であって、吊り下げ部材金属体を複数個つなぎ合わせてなる上部部材と金属製チェーンの下部部材からなり、かつ、垂直中空体の軸心と吊り下げ部材の軸心が一致する制振装置が外部又は内部に取り付けられており、そして吊り下げ部材の外面と垂直中空体の内面の間隔を上部よりも下部を大きくしていることを特徴とする制振性に優れた管状垂直立設部材。 Lower inner diameter a tubular vertical standing member comprising a suspension member which is hung vertically hollow body made of a large metal tube and the inside than the upper internal diameter, the suspension member is a plurality connecting the metal body A vibration damping device comprising a combined upper member and a lower member of a metal chain, the axial center of the vertical hollow body and the axial center of the suspension member being matched, is attached to the outside or inside, and the suspension member A tubular vertical standing member excellent in vibration damping, characterized in that the distance between the outer surface and the inner surface of the vertical hollow body is made larger at the lower part than at the upper part . 下部内径が上部内径よりも大きい金属製の管からなる管状垂直立設部材であって、その内部に垂直立設部材の軸心と一致する軸心を有する吊り下げ部材が吊り下げられており、吊り下げ部材金属体を複数個つなぎ合わせたもの又は金属製チェーンからなり、かつ、吊り下げ部材の外面と管状垂直立設部材の内面の間隔を上部よりも下部を大きくしていることを特徴とする制振性に優れた管状垂直立設部材。 A tubular vertical erection member made of a metal tube having a lower inner diameter larger than the upper inner diameter, and a suspending member having an axis that coincides with the axis of the vertical erection member is suspended therein. The suspension member is formed by connecting a plurality of metal bodies or a metal chain, and the interval between the outer surface of the suspension member and the inner surface of the tubular vertical standing member is larger at the lower portion than at the upper portion. Tubular vertical standing member with excellent vibration damping . 下部内径が上部内径よりも大きい金属製の管からなる管状垂直立設部材であって、その内部に垂直立設部材の軸心と一致する軸心を有する吊り下げ部材が吊り下げられており、吊り下げ部材が金属体を複数個つなぎ合わせてなる上部部材と金属製チェーンの下部部材からなり、かつ、吊り下げ部材の外面と管状垂直立設部材の内面の間隔を上部よりも下部を大きくしていることを特徴とする制振性に優れた管状垂直立設部材。 A tubular vertical erection member made of a metal tube having a lower inner diameter larger than the upper inner diameter, and a suspending member having an axis that coincides with the axis of the vertical erection member is suspended therein. The suspension member is composed of an upper member formed by joining a plurality of metal bodies and a lower member of a metal chain, and the interval between the outer surface of the suspension member and the inner surface of the tubular vertical standing member is made larger than the upper portion. A vertical tubular member excellent in vibration damping, characterized in that
JP2005042905A 2005-02-18 2005-02-18 Tubular vertical standing member with excellent vibration damping Expired - Fee Related JP4673636B2 (en)

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JP5254629B2 (en) * 2007-02-01 2013-08-07 Jfe西日本ジーエス株式会社 Damping device for primary vibration mode of steel pipe column and damping type steel pipe column

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61229003A (en) * 1985-03-30 1986-10-13 本州四国連絡橋公団 Apparatus for suppressing vibration of vertical member
JPS6367440A (en) * 1987-09-09 1988-03-26 Toshiba Corp Vibration suppressing device for pillar structure
JP2003328590A (en) * 2002-05-15 2003-11-19 Kajima Corp Tower like structure with damping device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61229003A (en) * 1985-03-30 1986-10-13 本州四国連絡橋公団 Apparatus for suppressing vibration of vertical member
JPS6367440A (en) * 1987-09-09 1988-03-26 Toshiba Corp Vibration suppressing device for pillar structure
JP2003328590A (en) * 2002-05-15 2003-11-19 Kajima Corp Tower like structure with damping device

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