VARIABLE INERTIAL MASS DAMPER

To provide a variable inertial mass damper capable of continuously changing inertial mass in a wide range and being miniaturized.SOLUTION: A variable inertial mass damper 100 comprises a rotary mass portion 140 including a weight 120 performing circular orbit motion on a ball screw shaft 111. Weight...

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Bibliographic Details
Main Authors YAMAZAKI KAZUO, HIRAMOTO KAZUHIKO
Format Patent
LanguageEnglish
Japanese
Published 15.06.2022
Subjects
BLASTING
BUILDING
BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES
ENGINEERING ELEMENTS AND UNITS
FENCING
FIXED CONSTRUCTIONS
GEARING
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
LIGHTING
MASTS
MEANS FOR DAMPING VIBRATION
MECHANICAL ENGINEERING
SHOCK-ABSORBERS
SPRINGS
SWIMMING OR SPLASH BATHS OR POOLS
TENTS OR CANOPIES, IN GENERAL
THERMAL INSULATION IN GENERAL
WEAPONS
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Summary:To provide a variable inertial mass damper capable of continuously changing inertial mass in a wide range and being miniaturized.SOLUTION: A variable inertial mass damper 100 comprises a rotary mass portion 140 including a weight 120 performing circular orbit motion on a ball screw shaft 111. Weight holding means 130 includes first and second rotation supporting portions 131 and 132, and an arm member 133 pivoted thereon, and holds the weight 120 on the ball screw shaft 111 in a manner that a radius of the circular orbit motion of the weight is continuously changeable. The cylindrical first rotation supporting portion 131 is rotated integrally with the ball screw shaft 111, and the second rotation supporting portion 132 is disposed inside of the first rotation supporting portion 131 in a manner of not relatively rotatable and relatively movable along an axis. By relatively moving the second rotation supporting portion 132 in the axial direction with respect to the first rotation supporting portion 131 by driving means 150, the arm member 133 is raised and fallen, and the radius of the circular orbit motion of the weight 120 is changed.SELECTED DRAWING: Figure 1 【課題】慣性質量を広い範囲で連続的に変更できる可変慣性質量ダンパーで、小型化可能なものを提供する。【解決手段】可変慣性質量ダンパー１００は、ボールねじ軸１１１で円軌道運動する重錘１２０を含む回転質量部１４０を具備する。重錘保持手段１３０は、第１、第２の回転支持部１３１，１３２と、それらに枢支されるアーム部材１３３とを具備し、重錘１２０を、それの円軌道運動の半径を連続的に変更可能にボールねじ軸１１１に保持する。筒状の第１の回転支持部１３１は、ボールねじ軸１１１と一体回転し、第２の回転支持部１３２は、第１の回転支持部１３１の内側に相対回転不能かつそれの軸線に沿って相対移動可能である。駆動手段１５０で第２の回転支持部１３２を第１の回転支持部１３１に対して軸線方向に相対移動させることで、アーム部材１３３を起伏させ、重錘１２０の円軌道運動の半径を変更する。【選択図】図１
Bibliography:Application Number: JP20200200763