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US 6,640,935 B1Granted
Elevator having vibration damping to attenuate vibration transfer to an elevator cage
AssigneeKabushiki Kaisha Toshiba
InventorsShin Murakami, Shigeo Nakagaki, Yoshiaki Fujita
Life of this patent
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Abstract
An elevator including a cage for accommodating passengers configured to move up and down in a shaft along a guide rail, a support base attached to a lower portion of the cage, a plurality of car sheaves rotatably secured to the support base through respective axles, a cable placed around the car sheaves and configured to suspend the cage, and at least one damper coupled to the cage and configured to attenuate vibration transferred from the cable to the cage.
Claims16
An elevator, comprising:
- a passenger cage configured to move up and down in a shaft along a guide rail;
- a support base attached to a lower portion of said cage;
- a plurality of car sheaves rotatably secured to said support base through respective axles;
- a cable placed around said car sheaves and configured to suspend said cage;
- and
- at least one damper coupled to said support base and configured to attenuate vibration transferred from said cable to said cage;
- wherein said at least one damper comprises:
- a horizontally extending member including a vibration attenuating element, having a secured end coupled to said support base and a free end free to swing vertically;
- a weight attached to said horizontally extending member so as to attenuate vibration transferred from said cable to said cage, and
- a position of said weight on said horizontally extending member is adjustable and the weight is positioned to attenuate a particular frequency band of vibration.
7 more elements
An elevator comprising:
- a passenger cage configured to move up and down in a shaft along a guide rail;
- wherein said cage comprises a cab arranged in a cage frame;
- a support base attached to a lower portion of said cage;
- a plurality of car sheaves rotatably secured to said support base through respective axles;
- a cable placed around said car sheaves and configured to suspend said cage;
- and
- at least one damper coupled to said support base and configured to attenuate vibration transferred from said cable to said cage;
- wherein said at least one damper comprises:
- a horizontally extending member including a vibration attenuating element, having a secured end coupled to said support base and a free end free to swing vertically;
- a weight attached to said horizontally extending member so as to attenuate vibration transferred from said cable to said cage, and
- a position of said weight on said horizontally extending member is adjustable and the weight is positioned to attenuate a particular frequency band of vibration.
8 more elements
Dependencies are inferred from the claim text.