| 摘要 |
PROBLEM TO BE SOLVED: To provide a vibration restraining device of a structure, compactly installable in the structure, and capable of improving its workability.SOLUTION: A cylindrical body part 11 is connected to a beam of a structure, and a nut 12b is movably and nonrotatably provided in the axial direction to the body part 11, and a screw shaft 12a rotatably threadedly engaging with the nut 12b via a ball, is immovably and rotatably provided in the axial direction to the body part 11, and rotary masses 14 and 14 are connected to the screw shaft 12a, First pulleys 5L and 5R are integrally provided in the body part 11, and second pulleys 6L and 6R are connected to a foundation F. Cables 4L and 4R are connected at its one end part to the foundation F, and are wound around the first and second pulleys 5L, 5R, 6L and 6R, and are connected at the other end part to the nut 12b.SELECTED DRAWING: Figure 2 |
