Patent ID: 11958720
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Handling (Mechanical engineering)
Classification: CPC B | IPC B

Claim 7:
8. 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 which restricts 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,
the vibration suppression device further comprises a position corrector which causes the first unit to approach the equilibrium position when the first unit is separated from the equilibrium position farther than the first distance,
wherein the position corrector is a restitution slope which causes the first unit to approach the equilibrium position by gravity applied to the first unit.