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Brake torque control

A technology of brakes and brake components, which is applied in the direction of brake types, hoisting devices, elevators, etc., and can solve problems such as unbalanced loads and counterweights

Active Publication Date: 2015-04-15
OTIS ELEVATOR CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a possibility that the load on the elevator car is unbalanced with the counterweight when the elevator car is about to leave the landing

Method used

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  • Brake torque control
  • Brake torque control
  • Brake torque control

Examples

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Embodiment Construction

[0015] One exemplary use of the brake torque monitoring and control functionality of the disclosed examples is in elevator systems. The following description uses an elevator system for discussion purposes. The disclosed torque control and monitoring are not necessarily limited to this environment.

[0016] figure 1 Selected portions of an exemplary elevator system 20 are shown schematically. Elevator car 22 is associated with counterweight 24 . Rope assembly 26 suspends elevator car 22 and counterweight 24 and moves in response to movement of traction sheave 28 to cause the desired movement of elevator car 22 .

[0017] For controlling the movement of the traction sheave 28 a machine 30 is provided. Machine 30 includes a motor 32 that selectively causes rotation of traction sheave 28 . The controller 34 controls the operation of the motor 32 . Braking device 36 selectively resists rotation of traction sheave 28 . The braking device 36 is useful, for example, to stop th...

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PUM

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Abstract

An exemplary brake device includes a brake element configured to apply a braking force to resist rotation of an associated component. A mounting member is configured to mount the brake device to a stationary surface. The mounting member is at least partially moveable relative to the stationary surface responsive to a torque on the brake device. A sensor provides an indication of a force associated with any movement of the mounting member relative to the stationary surface responsive to the torque.

Description

Background technique [0001] Elevator systems are in widespread use. Elevator systems are used, for example, to carry passengers between different floors in a building. A typical elevator system includes a machine that includes motors and brakes for controlling the movement and position of the elevator car to provide the desired elevator service. [0002] When the elevator car is parked on the landing, the brake is used to hold the elevator car in the desired position. Various control techniques for releasing or releasing the brakes are known. [0003] For example, it is known to preload the motor of the machine with torque before releasing the brakes, so as to avoid any shaking or jostling of the elevator car when the elevator run begins. For example, the load on an elevator car changes as, for example, passengers enter or leave the car. Therefore, there is a possibility that the load on the elevator car and the counterweight will be unbalanced when the elevator car is abo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66B5/24
CPCB66D5/30B66B1/304B66D5/14F16D66/00F16D2066/005B66B5/24B66B1/32
Inventor J·L·哈巴德D·J·马文S·R·尼古拉斯H·特里
Owner OTIS ELEVATOR CO