JPH0755396Y2 - Pendulum type dynamic vibration absorber - Google Patents

Description

【考案の詳細な説明】 〔産業上の利用分野〕 本考案は構造物等の振動対策に適用される振り子式動吸
振器に関する。[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a pendulum type dynamic vibration reducer applied to measures against vibration of structures and the like.

〔従来の技術〕 振り子式動吸振器（以下動吸振器という）としては、従
来、例えば、第４図側面図に示すように、長方形重錘01
の前後部がそれぞれ両端にピン継手02を有する鋼索03を
介して被制振構造物04に吊り下げられ、一端面の上下部
が前後端にピン継手05を有するばね06,減衰器07を介し
てそれぞれ構造物04の反力壁011に連結され、重錘下面
に突設された前後１対の制限部材08とそれ等の間で構造
物04の制限床012上に突設された制限部材09とよりなる
ストッパー010で振巾が制限されるものが知られてお
り、この動吸振器の振動数は重錘01の重量鋼索03の長さ
及びばね06のばね定数で、減衰は減衰器07で、それぞれ
定まる。[Prior Art] As a pendulum type dynamic vibration absorber (hereinafter referred to as a dynamic vibration absorber), as shown in the side view of FIG.
The front and rear parts of the are suspended from the vibration-damped structure 04 via the steel ropes 03 having the pin joints 02 at both ends, and the upper and lower ends of one end face have springs 06 having the pin joints 05 at the front and rear ends and the attenuator 07. And a pair of front and rear restricting members 08 that are respectively connected to the reaction walls 011 of the structure 04 and project on the lower surface of the weight, and the restricting members that project on the restricted floor 012 of the structure 04 between them. It is known that the stopper 010 consisting of 09 limits the swing. The frequency of this dynamic vibration absorber is the length of the heavy steel rope 03 of the weight 01 and the spring constant of the spring 06, and the damping is the attenuator. It is decided by 07.

しかしながら、このような構造では、下記のような欠点
がある。However, such a structure has the following drawbacks.

（１） 動吸振器の振動数，減衰比，振巾の調整が動吸
振器自体では行うことができず、被制振構造物04に反力
壁011及び制限床012を必要とするので、動吸振器装備費
用が嵩み、従って不経済である。(1) Since the frequency, damping ratio, and amplitude of the dynamic vibration absorber cannot be adjusted by the dynamic vibration absorber itself, the vibration control structure 04 requires the reaction force wall 011 and the limited floor 012. The cost of installing a dynamic vibration absorber is high, and it is uneconomical.

（２） 連結構造上、ばね06及び減衰器07の重量は、重
錘01の質量の一部に利用しにくいので、所要の大重量の
重錘を必要とし、従って不経済である。(2) Since the weight of the spring 06 and the attenuator 07 is difficult to use for a part of the mass of the weight 01 due to the connection structure, a large weight is required, which is uneconomical.

〔考案が解決しようとする課題〕[Problems to be solved by the device]

本考案は、このような事情に鑑みて提案されたもので、
装備上被制振構造物側に反力壁及び制限床が不要で、更
に重錘の重量を軽減し、従って装備性及び経済性に優れ
た振り子式動吸振器を提供することを目的とする。The present invention has been proposed in view of such circumstances,
It is an object of the present invention to provide a pendulum type dynamic vibration absorber that does not require a reaction force wall and a limited floor on the side of a structure to be damped due to the equipment, and further reduces the weight of the weight, and thus is excellent in equipmentability and economy .

〔課題を解決するための手段〕[Means for Solving the Problems]

そのために、本考案は被制振構造物の下面に上下端にピ
ン継手を有する複数の鉛直方向の剛性支持部材を介して
上記被制振構造物に並進運動可能に支持された重錘と、
制振方向の上記各支持部材と上記重錘との間に両端がそ
れぞれピン継手を介して配設された複数のばね，減衰器
と、上記重錘の央部と上記各支持部材の上記被制振構造
物に対する枢着端との間に両端がそれぞれピン継手を介
して連結された複数の変位制限斜材とを具えたことを特
徴とする。To this end, the present invention provides a weight supported by the vibration-suppressed structure in a translationally movable manner through a plurality of vertical rigid support members having pin joints at the upper and lower ends of the vibration-suppressed structure.
A plurality of springs and attenuators, both ends of which are respectively disposed through pin joints between the support members in the damping direction and the weights, a central portion of the weights and the cover members of the support members. It is characterized in that it comprises a plurality of displacement limiting diagonal members, both ends of which are connected to each other via a pin joint between the pivotal end of the damping structure.

〔作用〕[Action]

被制振構造物の下面に上下端にピン継手を有する複数の
鉛直方向の剛性支持部材を介して上記被制振構造物に並
進運動可能に重錘が垂下され、かつ制振方向の上記各支
持部材と上記重錘との間に両端がそれぞれピン継手を介
して複数のばね，減衰器がそれぞれ配設されているの
で、被制振構造物に動吸振器装備用の反力壁が不要とな
る。A weight is suspended for translational movement from the vibration-suppressed structure via a plurality of vertical rigid support members having pin joints at the upper and lower ends of the vibration-suppressed structure, and Since a plurality of springs and attenuators are arranged between the support member and the weight by way of pin joints at both ends, a reaction force wall for installing a dynamic vibration absorber is not required for the structure to be controlled. Becomes

また、制振方向の重錘の上面央部と各支持部材の上端と
の間に両端にそれぞれピン継手を介した複数の変位制限
斜材が設けられているので、被制振構造物に動吸振器装
備用の制限床が不要となる。更に、複数のばね，減衰器
が動吸振器内に配置されているので、それ等の重量を重
錘重量に加算することができ、従ってその分重錘重量を
減少することが可能となる。In addition, since a plurality of displacement limiting diagonal members with pin joints are provided at both ends between the center of the upper surface of the weight in the damping direction and the upper end of each support member, it is possible to Eliminates the need for a restricted floor for vibration absorbers. Furthermore, since the plurality of springs and dampers are arranged in the dynamic vibration absorber, their weights can be added to the weight weight, and therefore the weight weight can be reduced accordingly.

〔実施例〕〔Example〕

本考案の一実施例を図面について説明すると、まず、第
１図全体側面図及び第２図部分平面図において、１は型
鋼製四角形状平面枠組２の上に一体的に固定され水平断
面が十字状の重錘、３は下端がそれぞれ自在継手４を介
して枠組２の四隅に連結され、上端がそれぞれ自在継手
５を介して被制振構造物６に連結された曲げ剛性を有す
る吊り部材、7,8はそれぞれ重錘１の各端部両面と各吊
り部材３の側面との間に水平ピン9,10を介して取付られ
たばね，減衰器、11は各吊り部材３の上端と重錘１の上
面央部との間にそれぞれ水平ピンを介して連結された変
位制限斜材である。An embodiment of the present invention will be described with reference to the drawings. First, in FIG. 1 overall side view and FIG. 2 partial plan view, 1 is integrally fixed on a square flat frame 2 made of steel and its horizontal section is The cruciform weight 3 has a bending rigidity whose lower ends are connected to the four corners of the frame 2 via universal joints 4 and whose upper ends are connected to the vibration-damped structure 6 via universal joints 5, respectively. , 7 and 8 are springs and attenuators mounted via horizontal pins 9 and 10 between both end surfaces of the weight 1 and the side surface of each suspension member 3, and 11 is an upper end of each suspension member 3 and a weight. The displacement limiting diagonal members are connected to the central portion of the upper surface of the weight 1 through horizontal pins, respectively.

このような構造において、重錘１が振り子運動をする
と、第３図模式的側面図に示すように、各吊り部材３は
それぞれ各自在継手５を中心に揺動し、その際各鉛直線
12に対し最大で角度θまで傾斜し、重錘１は一種の並進
移動を繰返すので、各吊り部材３の側面と重錘１の各端
部両面間には、それぞれ相対変位が生じ、そこに装着さ
れたばね７と減衰器８はそれぞれ伸縮し、従って被制振
構造物６に反力壁を必要としない。In such a structure, when the weight 1 makes a pendulum motion, as shown in the schematic side view of FIG. 3, each suspension member 3 swings around each universal joint 5, and at that time, each vertical line.
Since the weight 1 inclines up to an angle θ with respect to 12 and the weight 1 repeats a kind of translational movement, relative displacement occurs between the side surface of each suspension member 3 and each end surface of the weight 1, and there The mounted spring 7 and attenuator 8 expand and contract, respectively, and thus do not require reaction walls for the structure 6 to be damped.

また、被制振構造物6,枠組２及び吊り部材3,3で形成さ
れる四辺形は重錘１の移動で平行四辺形状に変形し、そ
の際変位制限斜材11の伸縮部は伸びるが、ある一定長さ
まで伸びると引張力が作用するので、重錘１の移動変位
を拘束することができ、従って被制振構造物６に制限床
を必要としない。Further, the quadrilateral formed by the structure to be damped 6, the frame 2 and the suspension members 3, 3 is deformed into a parallelogram by the movement of the weight 1, and at that time, the expansion / contraction portion of the displacement limiting diagonal member 11 extends. Since the tensile force acts when it extends to a certain length, the displacement of the weight 1 can be restrained, so that the vibration-damped structure 6 does not need a limited floor.

更に、被制振構造物６から見ると、ばね７及び減衰器８
は重錘１と同様に吊り下げられた状態にあり、質量効果
を有するので、その分だけ重錘１の重量を減少すること
ができる。Further, when viewed from the structure 6 to be damped, the spring 7 and the attenuator 8
Is suspended like the weight 1 and has a mass effect, so that the weight of the weight 1 can be reduced accordingly.

このような、構造によれば、下記効果が奏せられる。According to such a structure, the following effects can be obtained.

（１） 被制振構造物の下面に両端の自在継手を有する
複数の剛性吊り部材を介して上記被制振構造物に並進運
動可能に重錘が垂下され、かつ制振方向の上記各吊り部
材と上記重錘との間に両端がそれぞれピン継手を介して
複数のばね，減衰器がそれぞれ配設されているので、被
制振構造物に動吸振器装備用の反力壁が不要となり、従
って動吸振器装備費用が減少し、経済性が向上する。(1) A weight is suspended for translational movement from the vibration-suppressed structure through a plurality of rigid suspension members having universal joints at both ends on the bottom surface of the vibration-suppressed structure, and the suspensions are respectively suspended in the vibration suppression direction. Since a plurality of springs and attenuators are disposed between the member and the weight by way of pin joints at both ends, a reaction force wall for installing a dynamic vibration absorber is not required in the vibration control structure. Therefore, the cost for installing the dynamic vibration reducer is reduced and the economical efficiency is improved.

（２） 重錘の上面央部と各吊り部材の上端との間に両
端がそれぞれピン継手を介して複数の変位制限斜材が設
けられているので、被制振構造物に動吸振器装備用の制
限床が不要となり、従って動吸振器装備費用が減少し、
経済性が向上する。(2) Since a plurality of displacement limiting diagonal members are provided between the central portion of the upper surface of the weight and the upper end of each suspension member via pin joints, the structure to be damped is equipped with a dynamic vibration absorber. No need for a restricted floor, thus reducing the cost of equipping dynamic vibration absorbers,
Economical efficiency is improved.

（３） 複数のばね，減衰器が動吸振器内に配置されて
いるので、それ等の重量を重錘重量に加算することがで
き、従ってその分だけ重錘重量を減少することが可能と
なり、経済性が向上する。(3) Since a plurality of springs and attenuators are arranged in the dynamic vibration absorber, their weights can be added to the weight weight, and therefore the weight weight can be reduced accordingly. , Economic efficiency is improved.

（４） 本装置はＸ軸,Y軸に対してそれぞれ対称的に作
られているので、簡単な取付構造にもかかわらず、水平
面内で二次元的な制振を行うことができる。(4) Since this device is made symmetrical with respect to the X axis and the Y axis, it is possible to perform two-dimensional vibration suppression in the horizontal plane despite the simple mounting structure.

（５） 本装置は倒立振子式に構成することもできる。(5) The present device can also be configured as an inverted pendulum type.

〔考案の効果〕[Effect of device]

要するに本考案によれば、被制振構造物の下面に上下端
にピン継手を有する複数の鉛直方向の剛性支持部材を介
して上記被制振構造物に並進運動可能に支持された重錘
と、制振方向の上記各支持部材と上記重錘との間に両端
がそれぞれピン継手を介して配設された複数のばね，減
衰器と、上記重錘の央部と上記各支持部材の上記被制振
構造物に対する枢着端との間に両端がそれぞれピン継手
を介して連結された複数の変位制限斜材とを具えたこと
により、装備上被制振構造物側に反力壁及び制限床が不
要で、更に重錘の重量を軽減し、従って装備性及び経済
性に優れた振り子式動吸振器を得るから、本考案は産業
上極めて有益なものである。In short, according to the present invention, a weight supported by the vibration-suppressed structure in a translationally movable manner via a plurality of vertical rigid support members having pin joints at the upper and lower ends of the vibration-suppressed structure. A plurality of springs and attenuators each having both ends arranged via pin joints between each of the support members in the damping direction and the weight, and a central portion of the weight and the support member described above. By providing a plurality of displacement limiting diagonal members, both ends of which are connected to each other via a pin joint, between the pivotal end of the structure to be damped and the reaction wall and the reaction force wall to the structure to be damped The present invention is extremely useful industrially because it does not require a limiting floor, reduces the weight of the weight, and thus provides a pendulum type dynamic vibration absorber with excellent equipmentability and economy.

【図面の簡単な説明】[Brief description of drawings]

第１図は本考案の一実施例を示す全体側面図、第２図は
第１図のII-IIに沿った部分断面図、第３図は第１図の
動吸振器の作動状態を示す模式的側面図である。 第４図は公知の振り子式動吸振器を示す側面図である。 １……重錘、２……枠組、３……吊り部材、4,5……自
在継手、６……被制振構造物、７……ばね、８……減衰
器、9,10……ピン、11……変位制限斜材、1 is an overall side view showing an embodiment of the present invention, FIG. 2 is a partial sectional view taken along line II-II of FIG. 1, and FIG. 3 shows an operating state of the dynamic vibration reducer of FIG. It is a typical side view. FIG. 4 is a side view showing a known pendulum type dynamic vibration reducer. 1 ... Weight, 2 ... Frame, 3 ... Suspension member, 4,5 ... Universal joint, 6 ... Vibrated structure, 7 ... Spring, 8 ... Attenuator, 9,10 ... Pin, 11 …… Displacement limiting diagonal material,

───────────────────────────────────────────────────── フロントページの続き (72)考案者 藤城 学 広島県広島市西区観音新町４丁目６番22号 三菱重工業株式会社広島研究所内 (72)考案者 平井 潤 広島県広島市西区観音新町４丁目６番22号 三菱重工業株式会社広島研究所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Manabu Fujishiro 4-6-22 Kannon Shinmachi, Nishi-ku, Hiroshima City, Hiroshima Prefecture Mitsubishi Heavy Industries, Ltd. Hiroshima Research Laboratory (72) Jun Hirai 4-chome, Kannon Shinmachi, Nishi-ku, Hiroshima City, Hiroshima Prefecture 6-22 No. 22 Hiroshima Research Laboratory, Mitsubishi Heavy Industries, Ltd.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項１】被制振構造物の下面に上下端にピン継手を
有する複数の鉛直方向の剛性支持部材を介して上記被制
振構造物に並進運動可能に支持された重錘と、制振方向
の上記各支持部材と上記重錘との間に両端がそれぞれピ
ン継手を介して配設された複数のばね，減衰器と、上記
重錘の央部と上記各支持部材の上記被制振構造物に対す
る枢着端との間に両端がそれぞれピン継手を介して連結
された複数の変位制限斜材とを具えたことを特徴とする
振り子式動吸振器。1. A weight supported by the vibration-suppressed structure for translational movement through a plurality of vertical rigid support members having pin joints at the upper and lower ends on the lower surface of the vibration-suppressed structure, and a damping member. A plurality of springs and attenuators, both ends of which are respectively disposed via pin joints between each of the supporting members in the swing direction and the weight, a central portion of the weight and the controlled member of each of the supporting members. A pendulum type dynamic vibration absorber, comprising: a plurality of displacement limiting diagonal members, both ends of which are connected to each other via a pin joint between a pivotal end of the vibration structure and a pivotal end.