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Elevator machine brake control

A technology of elevator brakes and brake controllers, which is applied in the direction of brake types, automatic brakes, elevators, etc., and can solve the problems of passengers' discomfort and anxiety

Pending Publication Date: 2022-04-19
OTIS ELEVATOR CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Given that the elevator car may be moving at undesirably high speeds just prior to an emergency stop, the forces associated with an emergency stop may cause discomfort and uneasiness to passengers

Method used

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  • Elevator machine brake control
  • Elevator machine brake control
  • Elevator machine brake control

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Embodiment Construction

[0029] Embodiments of the present invention provide customized control of deceleration and braking forces associated with emergency stops in elevator systems. Braking control is based on the current load of the elevator car, and the resulting braking force is less likely to discomfort or disturb passengers in the elevator car.

[0030] figure 1 Selected portions of elevator system 20 are shown schematically. In this example, elevator cars 22 may be selectively moved based on operation of elevator machine 24 to provide elevator service between various landings. Elevator machine 24 rotates traction sheave 26, thereby moving roping arrangement 28 when movement of elevator car 22 is desired. Although figure 1 A traction-based elevator system is shown as an example embodiment in , but the invention is not necessarily limited to traction-based elevator systems only.

[0031] A braking device 30 is associated with the elevator machine 24 . Braking device 30 may be used to help h...

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PUM

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Abstract

An elevator braking device is disclosed, an illustrative example embodiment of the elevator braking device includes a braking member configured to move into a braking position to resist movement of an elevator car associated with the braking device. A plurality of actuators are associated with the brake member and are selectively controllable to apply a force to move the brake member into the braking position. A brake controller determines a number of the actuators to activate based on a determined load of the elevator car associated with the brake device.

Description

[0001] This application is a divisional application of the patent application "Elevator Machine Brake Control" (Application No.: 201810090696.X, Applicant: Otis Elevator Company) with an application date of January 30, 2018. technical field [0002] The present invention relates to elevator machine brake control, and more particularly to elevator brakes, methods of operating elevator brakes, and elevator systems including elevator brakes. Background technique [0003] Elevator systems include various devices for controlling the movement of elevator cars. The elevator machine provides the force for moving the elevator car. Controlling the operation of the machine is sufficient to accelerate and decelerate the elevator car between stations in response to an elevator call. Machine brakes are typically applied when the elevator is stationary at a landing to help hold the car in the desired position. [0004] To deal with situations where the machine cannot control the movement...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66D5/30B66D5/14B66B5/14B66B1/34
CPCB66B1/3476B66B5/145B66D5/14B66D5/30B66B1/32B66B5/02B66B5/16B66B1/44F16D5/00F16D59/00F16D2123/00
Inventor 卫伟
Owner OTIS ELEVATOR CO