METHOD AND DEVICE FOR SETTING CHARACTER FREQUENCY OF VIBRATION DAMPING BODY IN VIBRATION DAMPING DEVICE

摘要

PROBLEM TO BE SOLVED: To facilitate setting and adjustment work to match a character frequency of a vibration damping body and a character frequency of structure.;SOLUTION: In a vibration damping device, the vibration damping body 3 is placed on structure 1 so that the vibration damping body 3 reciprocates and moves in a horizontal direction. Elastic structure 12 is vertically attached between a lower surface center part of the vibration damping body 3 at a neutral position of the vibration damping body 3 and the structure 1 positioned just under the vibration damping body 3. The elastic structure 12 has an extension coil spring 16 and a connecting rod 18. The connecting rod 18 is constituted of: a rod 18a having a screw part 21a at a lower end part thereof; a rod 18b having a screw part 21b reverse to the screw part 21a at an upper end part thereof; and a turn buckle 22 screwed with the screw parts 21a, 21b. Length of the connecting rod 18 is changed to adjust an initial tension by rotating the turn buckle 22, and the character frequency of the vibration damping body 3 is set.;COPYRIGHT: (C)2009,JPO&INPIT