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Friction dampers for reducing elevator car movement

An elevator car and damping technology, which is applied to elevators in buildings, lifting equipment in mines, winch devices, etc., can solve problems such as noise

Active Publication Date: 2015-09-09
OTIS ELEVATOR CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such devices may require additional maintenance and repair when the brake or mechanical stop cannot be released from the locked position when necessary
Additionally, many of these devices produce noisy

Method used

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  • Friction dampers for reducing elevator car movement
  • Friction dampers for reducing elevator car movement
  • Friction dampers for reducing elevator car movement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] figure 1 Selected portions of exemplary elevator system 20 are shown schematically. Elevator car 22 is coupled with counterweight 24 . A plurality of load bearing members 26 serve as lanyard arrangements for suspending the load of the elevator car 22 and counterweight 24 . In one example, load bearing member 26 includes a flat belt.

[0015] Elevator machine 30 includes motor 32 and brake 34 to control movement of traction sheave 36 . Traction between load bearing member 26 and traction sheave 36 provides control over the movement and position of elevator car 22 . For example, motor 32 causes rotation of traction sheave 36 , which rotation causes movement of load bearing member 26 to achieve the desired movement of elevator car 22 along guide rail 38 .

[0016] A brake 34 is used to prevent rotation of the traction sheave 36 in order to stop the elevator car 22 at a desired vertical position along the guide rail 38 . In one example, load bearing member 26 is of a c...

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PUM

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Abstract

An exemplary device for use in an elevator system includes at least one friction member that is selectively moveable into a damping position in which the friction member is useful to damp movement of an elevator car associated with the device. A solenoid actuator has an armature that is situated for vertical movement. The armature moves upward when the solenoid is energized to move the friction member into the damping position. The armature mass urges the armature in a downward vertical direction causing the friction member to move out of the damping position when the solenoid is not energized.

Description

Background technique [0001] Elevator systems include machines for moving elevator cars to provide elevator service. In traction-based systems, the lanyard arrangement suspends the weight of the elevator car and counterweight. The traction between the lanyard arrangement and the traction sheave moved by the elevator machine provides the ability to move the elevator car as required. [0002] When the lift of the elevator system is large enough, the longer lanyard members create the possibility of the elevator car bouncing or bouncing due to changes in load when the elevator car is on the landing. In some instances, elevator passengers may experience a bouncing of the elevator car, which is undesirable. [0003] There are various known devices for keeping the elevator car fixed at the landing. Mechanical stops have been introduced into elevator systems to engage fixed structures in order to hold the elevator car rigidly in place. Braking devices that engage guide rails or oth...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66B5/18B66B11/02B66B7/04
CPCB66B5/00B66B7/041B66B17/34B66B5/18B66B11/0293B66D5/30
Inventor R.N.法戈D.S.杨J.K.罗梅因H.特里R.K.罗伯茨L.阿迪丰
Owner OTIS ELEVATOR CO