JP3576264B2 - Vertical damping device - Google Patents

Vertical damping device Download PDF

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Publication number
JP3576264B2
JP3576264B2 JP10359395A JP10359395A JP3576264B2 JP 3576264 B2 JP3576264 B2 JP 3576264B2 JP 10359395 A JP10359395 A JP 10359395A JP 10359395 A JP10359395 A JP 10359395A JP 3576264 B2 JP3576264 B2 JP 3576264B2
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Japan
Prior art keywords
vibration
vibrating body
arm
vertical
damping device
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JP10359395A
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Japanese (ja)
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JPH08296343A (en
Inventor
元悦 石井
健二 今田
靖夫 尾木
久徳 阿比留
秀秋 原田
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Mitsubishi Heavy Industries Ltd
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Mitsubishi Heavy Industries Ltd
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Description

【0001】
【産業上の利用分野】
本発明は、風や地震により橋梁や建物等上下方向の振動を生じる制振対象の構造物に付設し、振動体を駆動して構造物の上下方向の制振を行う制振装置に関する。
【0002】
【従来の技術】
従来の水平方向の制振装置として図6に示すようなものが存在する。図6はその制振装置の側面図で、この制振装置は制振対象の構造物01上の固定支持枠02に振動体03を索04等で水平運動可能に保持し、振動体03下端にはユニバーサルジョイント05を取付け、このジョイント部を中心繋着点として前後または左右等の複数の垂直面内に、支持脚06上の軸受07に支持したシーブ08、及び駆動モータ09により往復回動するエンドレスの索体010を懸架し、索体010にはガイドローラ011及び吊りシーブ012を介して重錘013を支持させる方法で、一定の張力を与えて構成され、構造物01の水平方向の振動に応じ駆動モータ09により重錘013を同一方向へ同速度で加振することにより、構造物03に発生した水平振動を相殺し、アクティブに構造物の振動を抑制するものである。
【0003】
又、従来の上下方向の制振装置として図7に示すようなものが存在する。図7はその制振装置の側面図で、橋梁の主桁021間等の構造物に付設され、主桁021間に固着して設けた水平固定枠体022上に一端を水平軸023で回動可能に支持した可動枠体024を設け、同可動枠体024上に重錘025を固着してこれを振動体026とし、同可動枠体024と水平固定枠体022間に一定強さの上下方向のばね027及び油圧ダンパ028からなる振動吸収機構029を接続して構成され、構造物021に風等により上下方向の振動を生じたとき、それに応じて上下に振動する振動体026の振動エネルギーを振動吸収機構029により吸収することにより、構造物021の振動をパッシブに抑制するものである。
【0004】
【発明が解決しようとする課題】
上述した図6の従来装置は、水平方向の制振には効果があるが、装置が大型化するのを避けられない。又、同じ機構を上下方向振動に適用するためには振動体の支持方法や、定張力機構の設け方等に困難がある。
【0005】
他方、図7の従来装置は、風等により構造物021に発生する色々な異なった上下振動に対して、一定強さの振動吸収機構029で振動エネルギーを吸収する構造であり、構造物021に発生する全ての上下振動を一様に抑制できない。又、このような上下方向の制振装置においてアクティブな加振機構を付加した装置は未だ開発されていない。
【0006】
本発明は、上述した状況に鑑み、上下方向制振装置において上下方向の振動を吸収する機構に加振機構による振動抑制を行う装置を付加させて制振効果を高め、コンパクトな装置を得ることを目的として提案されたものである。
【0007】
【課題を解決するための手段】
そのため、本発明は、上下動可能な振動体、振動体と構造物間に接続した振動吸収機構、振動体の上下運動方向にエンドレスで回動可能に懸架した索体、索体の定張力機構及び索体の加振機構とを備えた上下方向制振装置とし、更に、振動体をカンチレバー構造とし、定張力機構をガイドシーブとコイルばね手段とでなる構成も提供する。
【0008】
即ち、本発明は、(1)制振対象である構造物に対し上下運動可能にアーム部を介して保持した振動体と、該振動体のアーム部と前記構造物間に接続し、該振動体の上下方向の振動を吸収する振動吸収機構と;前記構造物に該振動吸収機構と並設され、前記振動体の上下運動方向沿いにエンドレスに配置され、同アーム部の上下運動する一端部を繋着し、回動可能に縣架した索体と;前記アームの前記一端部の上下運動による張力変動に対し、該索体に一定張力を賦与する定張力機構と;該索体を往復駆動する加振機構とを具備したことを特徴とする上下方向制振装置を提供する。
【0009】
(2)更に、前述の(1)の上下方向振装置において、前記振動体は、一端を制振対象構造物に対し上下回動可能に軸連結したアーム部の他端に固定支持したカンチレバー構造に構成し、前記定張力機構を、前記振動体の前記アーム部沿いに滑動可能に支持したガイドシーブを設けて前記索体をガイドし、該ガイドシーブに前記アームの長さ方向の押出し力を賦与するコイルばね手段を設けた構成としたことを特徴とする請求項1記載の上下方向制振装置も提供する。
【0010】
【作用】
本発明はこのような手段により、その(1)の発明においては、風や地震等によって構造物に上下方向の振動を生じたとき、一方で構造物の揺れに応じて発生する振動体の上下揺れを振動吸収機構例えば、油圧ダンパー又はばね、等により吸収し、同時に他方で構造物の揺れに応じた速さで定張力を保持する索体を加振機構の自動制御で駆動し、この索体に連結する振動体を往復移動させ、この振動体の往復動により、この時生じる慣性力で構造物の上下の揺れを相殺し、抑制する。索体には定張力機構により常に一定の張力が賦与されており、振動体の振動に伴う索体長さの変化を吸収する。従って、振動吸収機構とこの加振機構と索体を駆動し、振動体を往復動させる制振効果を併用することにより橋梁や建物、等に適用して風や地震による上下方向の制振が広い範囲に亘って効果を発揮するものである。
【0011】
更に、(2)の発明においては振動体はカンチレバー構造であって、定張力機構がガイドシーブとコイルばね手段とで構成したので、前述の(1)の作用、効果に加えて振動体の振動を振動吸収機構で確実に受け、振動を吸収することができ、又、索体の張力をばね力で確実に一定に保持することができるので加振機構による制振の制御が正確になされるものである。
【0012】
【実施例】
以下、本説明の実施例を図面に基づいて具体的に説明する。図1は本発明の一実施例に係る上下方向制振装置の全体構成を示すブロック図である。図において、1は制振すべき構造物、2は構造物1に固定して設けた制振装置、3は構造物1に付設した速度計、4は速度計3が検出する構造物1の上下振動速度の信号3aに応じ、制御信号4aを出力し、制振装置2を自動制御する制御装置である。
【0013】
図2は制振装置2の拡大した詳細な側面図、図3はそのA−A矢視平面図である。両図において、6は下部を構造物1上に固定した制振装置2の剛性の枠体、7は同枠体6の片側に枠体6の上下の水平部材6a間に形成した開口部、8は一端を開口部7と反対の枠体6部に水平軸9で回動可能に支持して水平に開口部7内を通し、その他端部に振動体10(重錘)を固定支持した振動体10のアーム部である。このアーム部8は長さを調節して振動体10と固着することにより、振動体10の振動周期を調節できる。
【0014】
11は前記アーム部8の長さの中間部付近でアーム部8と枠体6の下部間に鉛直方向に並列に接続したばね12と油圧ダンパー13からなる振動吸収機構11である。アーム部8は図3に示すように水平方向に一定の間隔を有する2列の部材からなり、その2列の部材の繋ぎ部材8a部に上記ばね12と油圧ダンパー13が接続されている。
【0015】
14は上記振動吸収機構11と振動体10との間でアーム部8との枠体6の上下間に介装した索体駆動式の加振機構である。この加振機構14は、上下の枠体6の上下対称部に設けた一対の軸受15に支持したガイドシーブ16及び駆動シーブ17と、アーム部8内に支持して設けた定張力機構18と、同定張力機構18に支持したガイドシーブ19と、下部の駆動シーブ17の駆動軸に接続したサーボモータ20と、アーム部8間隔内の繋ぎ部材8bを繋着点として端部を繋着し、シーブ16と19及び17周りにエンドレスに縣架した索体21とで構成される。
【0016】
又、図2中で、22は枠体6の開口部7の水平部材6a上に固定し、アーム部8に接触可能に設けた防弦材である。
【0017】
次に、図4は図2のB部を拡大して示す具体例、図5は図4のC−C矢視の平面図である。図4及び図5において、定張力機構18は、アーム部8のき2列の部材内側に対向して設けた一対のガイドレール部23と、同ガイドレール部23に対し、フランジ部24上の各対のローラ25で係合しスライドするシーブ軸受け26と、同シーブ軸受け26の振動体10側の端と対向するアーム部繋ぎ部材8cとの間に接続したコイルばね等の押力発生手段27とで構成し、前記シーブ軸受け26上に前記ガイドシーブ19を装着支持している。
【0018】
上記した装置中、振動吸収機構11は、ばね12又は油圧ダンパー13の何れか一つだけで構成してもよく、又索体駆動式加振機構14のサーボモータ20は油圧アクチュエータに変えて索体21を直接別の手段で駆動してもよい。
【0019】
次に、作用について説明すると、このような制振装置2は、橋梁等の制振すべき構造物1上の複数個所に分散して配置される。分散配置された各制振装置2は構造物1の上下振動に応じて生じる振動体10の上下揺れを、一方で振動吸収機構11が受動的に吸収して揺れを抑制し、他方で同時に各制振装置2位置で生じる構造物1の上下振動速度の信号3aが、速度計3を経て制御装置4へ入り、制御装置から制御信号4aを出力し、制御装置4による制御下でサーボモータ20を駆動し、索体21を介して振動体10を構造物1の振動に応じた速度で加振振動させ、それによって構造物1の上下振動を相殺し抑制する。
【0020】
振動体10の加振振動中、索体21に発生する長さの変化は、定張力機構18により吸収され、索体21は一定張力を保持して作動する。
【0021】
又、上述したように橋梁等の構造物1の広い範囲に制振装置2のユニットを偶数個対称に分散配置すると、一つの制振装置2の作動で発生する水平方向の力を相互にキャンセルし得る。
【0022】
又、制振装置2の作動に際し、振動体10が過度に揺れた時には、アーム部8が上下の防弦材22に当たって緩衝し、その振動が吸収され、衝突による危険が防止される。
【0023】
このような構成によると、振動体10のための加振機構14は振動吸収機構11と並列配置になって、装置全体を著しくコンパクトに構成できる。
【0024】
又、装置の大きさに対し相対的に大きい振動体10を設け、且つ大きい上下方向の振れ幅を確保でき、制振効果の大きい単位制振装置を構成できる。又、構造物1の上下振動に対し、振動吸収機構11によるパッシブな抑制作用と、索体駆動式加振機構14によるアクティブな抑制作用を併用できるから、風、地震による構造物1の低速域から高速域までの広い範囲の上下振動に一様に大きい制振効果を発揮できる。
【0025】
【発明の効果】
以上、具体的に説明したように、本発明によれば、上下動可能な振動体、振動体と構造物間に接続した振動吸収機構、振動体の上下運動方向にエンドレスで回動可能に縣架した索体、索体の定張力機構及び索体の加振機構とを備えた上下方向制振装置とし、更に、振動体をカンチレバー構造とし、定張力機構をガイドシーブとコイルばね手段とでなる構成も提供するので上下方向制振装置の制振効果を著しく高め、且つ構造物の低風速域から高風速域までの広い範囲の上下振動及び地震動に一様に大きい制振効果を発揮させる効果を奏した。又、アクティブな加振機構を備えた制振装置をコンパクトに構成することができ、利用し易くする効果を奏するものである。
【図面の簡単な説明】
【図1】本発明の一実施例に係る上下方向制振装置の全体構成を示すブロック図である。
【図2】図1に示す制振装置の詳細な側面図である。
【図3】図2におけるA−A矢視図である。
【図4】図2におけるB部の拡大した側面図である。
【図5】図4におけるC−C矢視図。
【図6】従来の水平方向制振装置の側面図である。
【図7】従来の上下制振装置の側面図である。
【符号の説明】
1 構造物
2 制振装置
3 速度計
4 制御装置
6 枠体
7 枠体の開口部
8 アーム部
9 水平軸
10 振動体
11 振動吸収機構
12 ばね
13 油圧ダンパー
14 索体駆動式加振機構
16,19 ガイドシーブ
17 駆動シーブ
18 定張力機構
20 サーボモータ
21 索体
22 防弦材
23 ガイドレール
25 ローラー
26 シーブ軸受
27 押力発生手段
[0001]
[Industrial applications]
The present invention relates to a vibration damping device that is attached to a structure to be damped, such as a bridge or a building, which generates vertical vibrations due to wind or an earthquake, and drives a vibrating body to vertically dampen the structure.
[0002]
[Prior art]
FIG. 6 shows a conventional horizontal vibration damping device. FIG. 6 is a side view of the vibration damping device. The vibration damping device holds a vibrating body 03 in a fixed support frame 02 on a structure 01 to be damped so as to be able to move horizontally with a cable 04 or the like. A universal joint 05 is attached to the shaft, and the sheave 08 supported by a bearing 07 on a support leg 06 and a driving motor 09 reciprocate in a plurality of vertical planes such as front and rear or left and right with the joint as a center connection point. The endless cable body 010 is suspended, and the cable body 010 is supported by a weight roller 013 via a guide roller 011 and a suspension sheave 012, and is provided with a constant tension. By vibrating the weight 013 in the same direction and at the same speed by the drive motor 09 according to the vibration, the horizontal vibration generated in the structure 03 is canceled and the vibration of the structure is actively suppressed.
[0003]
FIG. 7 shows a conventional vertical vibration damping device. FIG. 7 is a side view of the vibration damping device, which is attached to a structure such as between the main girders 021 of the bridge, and has one end turned by a horizontal shaft 023 on a horizontal fixed frame 022 fixedly provided between the main girders 21. A movable frame 024 supported movably is provided, and a weight 025 is fixed on the movable frame 024 to form a vibrating body 026. A fixed strength is provided between the movable frame 024 and the horizontal fixed frame 022. A vibration absorbing mechanism 029 comprising a vertical spring 027 and a hydraulic damper 028 is connected, and when a vertical vibration is generated in the structure 21 by a wind or the like, the vibration of a vibration body 026 which vibrates vertically according to the vibration. The vibration of the structure 021 is passively suppressed by absorbing energy by the vibration absorbing mechanism 029.
[0004]
[Problems to be solved by the invention]
The above-described conventional device shown in FIG. 6 is effective for horizontal vibration damping, but it is inevitable that the device becomes large. In addition, in order to apply the same mechanism to vertical vibration, there are difficulties in supporting the vibrating body, providing a constant tension mechanism, and the like.
[0005]
On the other hand, the conventional apparatus shown in FIG. 7 has a structure in which vibration energy is absorbed by a vibration absorption mechanism 029 having a constant strength against various vertical vibrations generated in the structure 021 by wind or the like. All generated vertical vibrations cannot be suppressed uniformly. Further, in such a vertical vibration damping device, a device having an active vibration mechanism added has not yet been developed.
[0006]
The present invention has been made in view of the above-described circumstances, to obtain a compact device by adding a device that suppresses vibration by a vibration mechanism to a mechanism that absorbs vibration in a vertical direction in a vertical vibration damping device. It has been proposed for the purpose.
[0007]
[Means for Solving the Problems]
Therefore, the present invention provides a vertically movable vibrating body, a vibration absorbing mechanism connected between the vibrating body and a structure, a rope body suspended endlessly and rotatably in a vertical movement direction of the vibrating body, and a constant tension mechanism for the rope body. A vertical vibration damping device having a vibration mechanism for a cable body, a vibration member having a cantilever structure, and a constant tension mechanism comprising a guide sheave and coil spring means.
[0008]
That is, the present invention provides: (1) a vibrating body held via a arm so as to be able to move up and down with respect to a structure to be damped, and connected between the arm of the vibrating body and the structure, A vibration absorbing mechanism that absorbs vertical vibrations of the body; one end of the arm portion that is provided side by side with the vibration absorbing mechanism, is disposed endlessly along the vertical movement direction of the vibrating body, and moves up and down the arm portion And a constant tension mechanism for applying a constant tension to the rope in response to a change in tension due to the vertical movement of the one end of the arm; A vertical vibration damping device comprising a driving vibration mechanism is provided.
[0009]
(2) Further, in the above-described vertical vibration device of (1), the vibrating body has a cantilever structure fixedly supported on one end of an arm portion having one end pivotally connected to the structure to be damped so as to be vertically rotatable. The constant tension mechanism is provided with a guide sheave slidably supported along the arm portion of the vibrating body to guide the cable body, and the pushing force in the length direction of the arm is applied to the guide sheave. The vertical vibration damping device according to claim 1, wherein a coil spring means for applying is provided.
[0010]
[Action]
According to the first aspect of the present invention, in the invention according to (1), when a vertical vibration is generated in a structure due to a wind, an earthquake, or the like, the vertical movement of the vibrating body generated in response to the vibration of the structure is performed. A cable body that absorbs the vibration with a vibration absorbing mechanism, for example, a hydraulic damper or a spring, and at the same time, drives a rope body that maintains a constant tension at a speed corresponding to the vibration of the structure by automatic control of a vibration mechanism. The vibrating body connected to the body is reciprocated, and the reciprocating motion of the vibrating body cancels and suppresses the vertical swing of the structure by the inertial force generated at this time. A constant tension mechanism is always applied to the rope by a constant tension mechanism to absorb a change in the length of the rope due to the vibration of the vibrating body. Therefore, by using the vibration absorbing mechanism, the vibration mechanism, and the vibration damping effect of driving the cable body and reciprocating the vibration body, it can be applied to bridges, buildings, etc., and the vertical vibration damping due to wind or earthquake can be achieved. It is effective over a wide range.
[0011]
Further, in the invention of (2), the vibrating body has a cantilever structure, and the constant tension mechanism is constituted by the guide sheave and the coil spring means. Can be reliably received by the vibration absorbing mechanism, and the vibration can be absorbed. Also, the tension of the rope body can be reliably maintained constant by the spring force, so that the vibration control by the vibration mechanism can be accurately controlled. Things.
[0012]
【Example】
Hereinafter, embodiments of the present description will be specifically described with reference to the drawings. FIG. 1 is a block diagram showing an overall configuration of a vertical damping device according to one embodiment of the present invention. In the figure, 1 is a structure to be damped, 2 is a vibration damping device fixedly provided on the structure 1, 3 is a speedometer attached to the structure 1, and 4 is a structure 1 detected by the speedometer 3. This is a control device that outputs a control signal 4a in accordance with the signal 3a of the vertical vibration speed and automatically controls the vibration damping device 2.
[0013]
FIG. 2 is an enlarged detailed side view of the vibration damping device 2, and FIG. In both figures, 6 is a rigid frame of the vibration damping device 2 having a lower part fixed on the structure 1, 7 is an opening formed on one side of the frame 6 between upper and lower horizontal members 6a of the frame 6, Numeral 8 has one end rotatably supported by a horizontal shaft 9 in a frame 6 opposite to the opening 7 so as to be rotatable through the opening 7, and a vibrator 10 (weight) fixedly supported at the other end. This is an arm of the vibrating body 10. By adjusting the length of the arm portion 8 and fixing it to the vibrating body 10, the vibration period of the vibrating body 10 can be adjusted.
[0014]
Reference numeral 11 denotes a vibration absorbing mechanism 11 comprising a spring 12 and a hydraulic damper 13 connected in parallel in the vertical direction between the arm 8 and the lower part of the frame 6 near the middle of the length of the arm 8. As shown in FIG. 3, the arm portion 8 is made up of two rows of members having a certain interval in the horizontal direction, and the spring 12 and the hydraulic damper 13 are connected to a connecting member 8a of the two rows of members.
[0015]
Reference numeral 14 denotes a cable-driven vibration mechanism interposed between the vibration absorbing mechanism 11 and the vibrating body 10 between the upper and lower portions of the frame 6 with the arm 8. The vibrating mechanism 14 includes a guide sheave 16 and a drive sheave 17 supported by a pair of bearings 15 provided at vertically symmetrical portions of the upper and lower frame members 6, a constant tension mechanism 18 supported and provided within the arm 8. The guide sheave 19 supported by the identification tension mechanism 18, the servomotor 20 connected to the drive shaft of the lower drive sheave 17, and the ends are connected with the connecting member 8b within the interval of the arm 8 as a connecting point, It comprises a sheave 16 and a cord 21 suspended endlessly around 19 and 17.
[0016]
In FIG. 2, reference numeral 22 denotes a string-proof material fixed on the horizontal member 6 a of the opening 7 of the frame 6 and provided so as to be able to contact the arm 8.
[0017]
Next, FIG. 4 is a specific example showing a portion B of FIG. 2 in an enlarged manner, and FIG. 5 is a plan view taken along the line CC of FIG. 4 and 5, the constant tension mechanism 18 includes a pair of guide rails 23 provided inside the two rows of members of the arm 8 so as to face each other. A pressing force generating means 27 such as a coil spring connected between a sheave bearing 26 engaged and slid by each pair of rollers 25 and an arm connecting member 8c facing an end of the sheave bearing 26 on the vibrating body 10 side. The guide sheave 19 is mounted and supported on the sheave bearing 26.
[0018]
In the above-described apparatus, the vibration absorbing mechanism 11 may be constituted by only one of the spring 12 and the hydraulic damper 13, and the servomotor 20 of the cable-body-driven vibration mechanism 14 is replaced by a hydraulic actuator instead of a hydraulic actuator. The body 21 may be directly driven by another means.
[0019]
Next, the operation will be described. Such vibration damping devices 2 are dispersedly arranged at a plurality of locations on a structure 1 to be damped such as a bridge. Each of the distributed vibration damping devices 2 suppresses the vertical vibration of the vibrating body 10 generated in accordance with the vertical vibration of the structure 1, while the vibration absorbing mechanism 11 passively absorbs the vibration, and on the other hand, simultaneously controls each vibration. A signal 3a of the vertical vibration speed of the structure 1 generated at the position of the vibration damping device 2 enters the control device 4 via the speedometer 3 and outputs a control signal 4a from the control device. To vibrate and vibrate the vibrating body 10 at a speed corresponding to the vibration of the structure 1 via the cable body 21, thereby canceling and suppressing the vertical vibration of the structure 1.
[0020]
The change in length generated in the rope 21 during the vibration of the vibrating body 10 is absorbed by the constant tension mechanism 18, and the rope 21 operates while maintaining a constant tension.
[0021]
Further, as described above, when the even number of units of the vibration damping device 2 are dispersed and symmetrically arranged in a wide range of the structure 1 such as a bridge, the horizontal force generated by the operation of one vibration damping device 2 is mutually canceled. I can do it.
[0022]
In addition, when the vibration body 10 is shaken excessively during the operation of the vibration damping device 2, the arm portion 8 hits the upper and lower string protection members 22 and buffers the vibration, the vibration is absorbed, and the danger due to collision is prevented.
[0023]
According to such a configuration, the vibrating mechanism 14 for the vibrating body 10 is arranged in parallel with the vibration absorbing mechanism 11, so that the whole apparatus can be made extremely compact.
[0024]
Further, the vibration member 10 which is relatively large with respect to the size of the device can be provided, and a large vertical swing width can be secured, so that a unit vibration damping device having a large vibration damping effect can be configured. In addition, since the passive suppressing action of the vibration absorbing mechanism 11 and the active suppressing action of the rope-driven vibration mechanism 14 can be used in combination with the vertical vibration of the structure 1, the low-speed range of the structure 1 due to wind and earthquake can be used. A large vibration damping effect can be exerted uniformly in a wide range of vertical vibration from to high speed.
[0025]
【The invention's effect】
As specifically described above, according to the present invention, the vibrating body that can move up and down, the vibration absorbing mechanism connected between the vibrating body and the structure, and the endlessly rotatable suspension in the up and down movement direction of the vibrating body. A vertical damping device equipped with a bridged rope, a constant tension mechanism for the rope, and a vibration mechanism for the rope, a vibrating body having a cantilever structure, and a constant tension mechanism including a guide sheave and coil spring means. The vertical vibration control device significantly enhances the vibration damping effect of the vertical vibration damping device, and exerts a large vibration damping effect uniformly on the vertical vibration and earthquake motion in a wide range from low wind speed to high wind speed of the structure. It worked. Further, the vibration damping device having the active vibration mechanism can be made compact, and has an effect of making it easy to use.
[Brief description of the drawings]
FIG. 1 is a block diagram showing the overall configuration of a vertical damping device according to one embodiment of the present invention.
FIG. 2 is a detailed side view of the vibration damping device shown in FIG.
FIG. 3 is a view taken in the direction of arrows AA in FIG. 2;
FIG. 4 is an enlarged side view of a portion B in FIG. 2;
FIG. 5 is a view taken in the direction of arrows CC in FIG. 4;
FIG. 6 is a side view of a conventional horizontal vibration damping device.
FIG. 7 is a side view of a conventional vertical damping device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Structure 2 Vibration suppression device 3 Speedometer 4 Control device 6 Frame 7 Frame opening 8 Arm 9 Horizontal axis 10 Vibrating body 11 Vibration absorbing mechanism 12 Spring 13 Hydraulic damper 14 Cable body driven vibration mechanism 16, Reference Signs List 19 guide sheave 17 drive sheave 18 constant tension mechanism 20 servo motor 21 cable body 22 string bar 23 guide rail 25 roller 26 sheave bearing 27 pressing force generating means

Claims (2)

制振対象である構造物に対し上下運動可能にアーム部を介し保持した振動体と、該振動体のアーム部と前記構造物間に接続し、該振動体の上下方向の振動を吸収する振動吸収機構と;前記構造物に該振動吸収機構と並設され、前記振動体の上下運動方向沿いにエンドレスに配置され、同アーム部の上下運動する一端部を繋着し、回動可能に懸架した索体と;前記アームの前記一端部の上下運動による張力変動に対し、該索体に一定張力を賦与する定張力機構と;該索体を往復駆動する加振機構とを具備したことを特徴とする上下方向制振装置。A vibrating body held via an arm so as to be able to move up and down with respect to the structure to be damped, and a vibration connected between the arm of the vibrating body and the structure to absorb the vibration of the vibrating body in a vertical direction An absorption mechanism, which is provided on the structure in parallel with the vibration absorption mechanism, is disposed endlessly along a vertical movement direction of the vibrating body, and connects one end of the arm part which moves up and down, and is rotatably suspended. A constant tension mechanism for applying a constant tension to the rope body in response to a tension change due to a vertical movement of the one end of the arm; and a vibration mechanism for reciprocatingly driving the rope body. Characteristic vertical damping device. 前記振動体は、一端を制振対象構造物に対し上下回動可能に軸連結したアーム部の他端に固定支持したカンチレバー構造に構成し、前記定張力機構を、前記振動体の前記アーム部沿いに滑動可能に支持したガイドシーブを設けて前記索体をガイドし、該ガイドシーブに前記アームの長さ方向の押出し力を賦与するコイルばね手段を設けた構成としたことを特徴とする請求項1記載の上下方向制振装置。The vibrating body is configured in a cantilever structure having one end fixedly supported at the other end of an arm portion pivotally connected to the structure to be damped so as to be vertically rotatable, and the constant tension mechanism is provided by the arm portion of the vibrating body. A guide sheave slidably supported along the guide to guide the cable body, and a coil spring means for applying a pushing force in a longitudinal direction of the arm to the guide sheave. Item 4. The vertical damping device according to Item 1.
JP10359395A 1995-04-27 1995-04-27 Vertical damping device Expired - Fee Related JP3576264B2 (en)

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Application Number Priority Date Filing Date Title
JP10359395A JP3576264B2 (en) 1995-04-27 1995-04-27 Vertical damping device

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Application Number Priority Date Filing Date Title
JP10359395A JP3576264B2 (en) 1995-04-27 1995-04-27 Vertical damping device

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JPH08296343A JPH08296343A (en) 1996-11-12
JP3576264B2 true JP3576264B2 (en) 2004-10-13

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Publication number Priority date Publication date Assignee Title
CN117403532B (en) * 2023-12-14 2024-03-12 山东大学 Self-adaptive damping limiting device and bridge

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