VIBRATION CONTROL STRUCTURE AND VIBRATION CONTROL METHOD FOR ELEVATOR HOISTING MACHINE, AND DYNAMIC VIBRATION ABSORBER FOR ELEVATOR HOISTING MACHINE

摘要

PROBLEM TO BE SOLVED: To provide a vibration control structure and the like for an elevator hoisting machine capable of performing change of a vibration control characteristic more easily.;SOLUTION: In an elevator in which a hoisting machine base on which a hoisting machine is mounted is provided on a machine base fixed on a building side with a first elastic body being interposed, a vibration control structure is provided for an elevator hoisting machine in which at least one dynamic vibration absorber is mounted for absorbing vibration generating during a hoisting machine operation on the hoisting machine base. The dynamic vibration absorber comprises: a spring constant change part including a weight, and a spring constant variable beam part which extends to both sides along a rotary shaft direction from the weight and in which a spring constant with respect to the vibration changes according to a rotation position; a holding part for holding the spring constant change part by the spring constant variable beam part on both sides in a rotatable manner on the hoisting machine base; and a second elastic body which is interposed between the holding part and the hoisting machine base.;COPYRIGHT: (C)2015,JPO&INPIT