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Elevator rope sway restriction device

A technology for restraining devices, ropes, used in elevators, transportation and packaging, lifts, etc. in buildings to solve problems such as excessive rope shaking conditions, undesired conditions, and damage to ropes or other equipment.

Active Publication Date: 2019-07-12
OTIS ELEVATOR CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Excessive rope sway conditions on the main rope are undesirable for two main reasons; excessive rope sway conditions can cause damage to ropes or other equipment in the hoistway, and their movement can create nuisance in the elevator car. vibration level

Method used

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  • Elevator rope sway restriction device
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Examples

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Embodiment Construction

[0035] figure 1 Selected parts of the elevator system 1 of the present invention are shown schematically. Both the elevator car 2 and the counterweight 3 are vertically movable within the hoistway 4 . A plurality of main ropes 5 couple the elevator car 2 to the counterweight 3 . In this embodiment, the main rope 5 comprises a round steel rope, but the main rope 5 may comprise a plurality of belts comprising a plurality of longitudinally extending steel cords and a coating covering the steel cords. Various roping configurations may be useful in elevator systems including features designed in accordance with embodiments of the present invention.

[0036] The main ropes 5 support the weight of the elevator car 2 and the counterweight 3 and propel them in the desired direction within the hoistway 4 . An elevator machine 6 is positioned in the machine room 7 or in the upper part of the hoistway 4 and comprises a traction sheave 8 which rotates and causes movement of the main rop...

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PUM

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Abstract

According to one embodiment, an elevator system is provided which comprises an elevator car vertically movable within a hoistway, a counterweight connected to the elevator car via at least one rope and vertically movable within the hoistway and a rope sway restriction device for restricting the swaying of the at least one rope. The rope sway restriction device includes a rope sway restrictor vertically movable within the hoistway and at least one restrictor rope connecting the rope sway restrictor to the counterweight so that the rope sway restrictor moves vertically within the hoistway in response to movement of the counterweight.

Description

Background technique [0001] The present invention generally relates to elevator systems. More specifically, the present invention relates to an elevator rope sway limiting device for limiting sway of a main rope. [0002] Many elevator systems include an elevator car and a counterweight suspended within a hoistway by roping including one or more main ropes. Typically, a number of ropes, cables or belts are used as the main ropes for supporting the weight of the elevator car and counterweight and for moving the elevator car to the desired position within the hoistway. The main rope is usually routed around several pulleys according to the desired roping arrangement. [0003] A condition exists where one or more main ropes may start to dangle within the hoistway. For example, during an earthquake or very high wind conditions, rope sway may occur because the building will move in response to the earthquake or high winds. As the building moves, the long ropes associated with t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B7/04B66B7/06
CPCB66B7/048B66B7/068B66B5/022B66B7/06B66B9/00
Inventor J.穆拉塔
Owner OTIS ELEVATOR CO
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