Title:
ELEVATOR DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/021671
Kind Code:
A1
Abstract:
The present invention provides an elevator device equipped with a dynamic vibration absorber that can cope with secular changes in a reference resonance frequency to be damped while having a simple configuration. This elevator device comprises: a car that moves vertically in a hoistway; a counterweight that moves vertically in conjunction with the car; a suspension means for suspending the car and the counterweight; and a dynamic vibration absorber 15 that is disposed between the spokes 13 of at least one pulley 6 among car suspension pulleys mounted on the car and a counterweight suspension pulley mounted on the counterweight. The at least one pulley 6 has the suspension means wrapped therearound and comprises: a rotation center portion 11; the plurality of spokes 13 which extend in the radial direction from the rotation center portion 11; and an outer peripheral portion 12 supported by the spokes 13. The dynamic vibration absorber 15 is formed from a plate-shaped member 37 that has one end serving as a fixed end fixed to the rotation center portion 11 of the pulley and the other end serving as a free end extending in the radial direction, and a weight 18 is fixed at any position from the fixed end to the free end of the plate-shaped member 37. The dynamic vibration absorber 15 is capable of vibrating in the rotational direction of the pulley 6.
Inventors:
WATANABE SEIJI (JP)
SAITO EIICHI (JP)
NAKAZAWA DAISUKE (JP)
FUKUI DAIKI (JP)
SAITO EIICHI (JP)
NAKAZAWA DAISUKE (JP)
FUKUI DAIKI (JP)
Application Number:
PCT/JP2018/028056
Publication Date:
January 30, 2020
Filing Date:
July 26, 2018
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
B66B7/08; B66B7/06; F16F15/02; F16F15/121
Foreign References:
| JP2001280412A | 2001-10-10 | |||
| JP2013107755A | 2013-06-06 | |||
| JPS61149635A | 1986-07-08 | |||
| JP2001041291A | 2001-02-13 | |||
| JPS6421894U | 1989-02-03 | |||
| JPH07190146A | 1995-07-28 |
Attorney, Agent or Firm:
MURAKAMI, Kanako et al. (JP)
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