ROTARY INERTIAL MASS DAMPER

摘要

PROBLEM TO BE SOLVED: To show stable damper performance at a low cost.SOLUTION: A rotation inertial mass damper has a structure interposed between members 11 and 12 to relatively displace in an approaching/separating direction Y, and which generates force by relative acceleration generated between the members 11 and 12 in the approaching/separating direction Y. The rotation inertial mass damper is equipped with: a cylinder 2 coupled to the first member 11 and sealed with a working fluid L; a piston rod 3 coupled to the second member 12 and stored in the cylinder 2 so as to move backward/forward; a piston 4 which is provided integrally with the piston rod 3, and divides the inside of the cylinder 2 into two oil chambers R1 and R2; a hydraulic motor 5 coupled to the oil chambers R1 and R2 through coupling pipes 6A and 6B; damping valves 7 provided on the coupling pipes 6A and 6B; and a rotation weight 8 provided on ao rotary shaft 51 of the hydraulic motor 5. The rotary shaft 51 of the hydraulic motor 5 is rotated by the hydraulic pressure of the working fluid L pushed out from the oil chamber R by the backward/forward movement of the piston rod 3, and viscosity resistance is generated in the working fluid L circulating in the coupling pipe 6.SELECTED DRAWING: Figure 1