[PROBLEMS] To allow it to easily perform setting adjustment work for adjusting the natural frequency of the natural frequency of the structure of the damping body. To A on the structure 1 in the vibration damping device you have placed so as to be repeated move the damping body 3 in the horizontal direction, and the central portion of the lower surface of the damping body 3 in the neutral position of the damping body 3 between the structure 1 which is located directly below, attach the elastic structure 12 in the vertical direction. Elastic structure 12 has a tensile coil spring 16 and the connecting rod 18. Connecting rod 18 includes a rod 18a having a threaded portion 21a at the lower end, a rod 18b having the inverse of the threaded portion 21b has a threaded portion 21a at the upper end portion, a turn buckle 22 that is screwed the screw part 21a, and 21b and a a. Adjust the initial tension by varying the length of the connecting rod 18 in the rotating operation of the turn buckle 22, and sets the natural frequency of the damping body 3. .BACKGROUND
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