US 11,958,720 B2
Vibration suppression device for rope-like body of elevator
Tomohiro Asamura, Tokyo (JP); Eiichi Saito, Tokyo (JP); and Seiji Watanabe, Tokyo (JP)
Assigned to MITSUBISHI ELECTRIC CORPORATION, Tokyo (JP)
Appl. No. 17/772,528
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
PCT Filed Nov. 6, 2019, PCT No. PCT/JP2019/043481
§ 371(c)(1), (2) Date Apr. 28, 2022,
PCT Pub. No. WO2021/090401, PCT Pub. Date May 14, 2021.
Prior Publication US 2022/0371858 A1, Nov. 24, 2022
Int. Cl. B66B 11/08 (2006.01); B66B 7/10 (2006.01)
CPC B66B 11/08 (2013.01) [B66B 7/10 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A vibration suppression device for a rope-like body of an elevator, comprising:
a first unit which is capable of movement in a direction in which a distance from an equilibrium position of vibration of the rope-like body of the elevator changes; and
a first stopper, fixed in position and shape, which stops movement of the first unit to a position closer than a first distance from the equilibrium position,
wherein the first unit includes
a first displacement amplifier which is arranged to be directed to a first position in a longitudinal direction of the rope-like body and amplifies displacement of vibration of the rope-like body by an attractive force which becomes stronger as the rope-like body approaches closer, and
a first restriction body which inhibits the rope-like body from approaching the first displacement amplifier closer than a predetermined distance, and
wherein
the first unit moves together with the rope-like body towards a direction separating from the equilibrium position when the rope-like body, which is moving towards the direction separating from the equilibrium position, contact with the first unit, and
the first stopper restricts the movement of the first unit to a position closer than the first distance from the equilibrium position when the first unit, which is moving towards a direction approaching the equilibrium position in a process where the rope-like body returns to the equilibrium position, contact with the first stopper.