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Emergency terminal stopping systems

A terminal and emergency technology, applied in the field of emergency terminal stop system, can solve problems such as elevator car or counterweight deceleration, and achieve a reliable effect of transformation

Pending Publication Date: 2021-11-30
OTIS ELEVATOR CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, the action of the brakes may not be sufficient to decelerate the elevator car or counterweight sufficiently before impacting with the buffer

Method used

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  • Emergency terminal stopping systems
  • Emergency terminal stopping systems
  • Emergency terminal stopping systems

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0064] figure 1 A first example of an elevator system 1 is shown, which comprises a hoistway 2 and an elevator car 4 which runs along guide rails 6 inside the hoistway 2 . The elevator car 4 is movably suspended by tension members 8, such as ropes or belts. The tension member 8 is connected to a drive system 10 configured to drive the tension member 8 in order to move the elevator car 4 , and the drive system 10 includes a brake 12 . Drive system 10 may be any type of conventional drive, such as, but not limited to, a traction drive. The elevator car 4 moves between a plurality of halls 16 . For ease of understanding, in figure 1 Only the upper and lower stations 16 are depicted in .

[0065] The elevator system 1 also includes a controller 14 . Controller 14 is depicted as the figure 1 in the upper part 2b of the shaft. However, it will be appreciated that the controller 14 could be located in any suitable location within or near the hoistway 2 . The term controller 1...

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PUM

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Abstract

There is provided an emergency terminal stopping system for an elevator system, the emergency terminal stopping system comprising: a sensor configured to determine data related to the motion of an elevator car moving within an elevator hoistway; at least one elevator brake configured to halt the motion of the elevator car; at least one elevator safety gear device provided on the elevator car; and at least one buffer provided at a lower portion of the hoistway. The controller is configured to receive data from the sensor relating to the motion of the elevator car; monitor a current speed of the elevator car with respect to a distance from a terminal limit of normal elevator car travel; detect an abnormal speed of the elevator car; activate the at least one elevator brake in response to a detected abnormal speed; monitor a current acceleration of the elevator car following activation of the main elevator brake; detect an abnormal acceleration of the elevator car; and activate the elevator safety gear device in response to a detected abnormal acceleration.

Description

technical field [0001] The present disclosure relates to emergency terminal stopping systems, and to methods of operating emergency terminal stopping systems. Background technique [0002] Elevator systems generally include an elevator car that moves between a plurality of landings within a hoistway. The elevator car is guided by rails provided in the hoistway. [0003] The elevator system may include one or more buffers mounted at the base of the elevator hoistway below the elevator car and configured to move downward (i.e., beyond the lower level of the hoistway) when the elevator car travels below its normal travel limit. station) to stop the elevator car. For elevator systems including counterweights, one or more buffers may also be provided in the base of the hoistway below the counterweights to provide a safe stop for the counterweights. A buffer can also be provided at the upper part of the hoistway. [0004] Various types of dampers are known, such as spring damp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B5/06B66B5/04B66B5/28B66B5/16B66B5/00
CPCB66B5/06B66B5/044B66B5/282B66B5/16B66B5/0031B66B5/04B66B5/18B66B1/3492B66B1/50B66B3/02B66B5/284
Inventor P·赫克尔J·伦克
Owner OTIS ELEVATOR CO
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