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Simultaneous elevator car safety device and counterweight safety device actuation

A safety device, elevator car technology, applied in the direction of elevators, transportation and packaging, elevators, etc. in buildings, can solve the problems of adding cost and requiring extra space for elevator systems

Active Publication Date: 2020-11-17
OTIS ELEVATOR CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Bind compensation mechanisms add cost and require additional space in the elevator system

Method used

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  • Simultaneous elevator car safety device and counterweight safety device actuation
  • Simultaneous elevator car safety device and counterweight safety device actuation
  • Simultaneous elevator car safety device and counterweight safety device actuation

Examples

Experimental program
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Embodiment Construction

[0025] Exemplary embodiments of the present invention provide substantially simultaneous actuation of safety devices associated with the elevator car and counterweight, which reduces or eliminates counterweight or elevator car jumping without reliance on a restraint mechanism. By controlling the safety device and actuating the safety device of the elevator car and counterweight substantially simultaneously, elevator system cost and space requirements can be reduced because the tie down mechanism can be simplified or eliminated.

[0026] figure 1 Selected portions of elevator system 20 are shown schematically. An elevator car 22 is positioned within a hoistway 24 . Elevator car 22 is coupled to counterweight 26 by a rope arrangement 28 comprising, for example, round ropes or flat belts. By controlling the movement of the rope arrangement 28, the machine 30 controls the movement and position of the elevator car.

[0027] In most cases, the machine 30 controls whether the elev...

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PUM

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Abstract

An illustrative exemplary embodiment of an elevator system comprising: an elevator car; a counterweight; a rope coupling the elevator car and the counterweight, the rope supporting the elevator car and the counterweight load; and multiple safety devices. The plurality of safety devices includes a plurality of elevator car safety devices supported for movement with the elevator car, the plurality of elevator car safety devices being selectively actuatable to engage a stationary surface to prevent the Movement of the elevator car. The plurality of safety devices also includes a plurality of counterweight safety devices supported for movement with the counterweight, the plurality of counterweight safety devices being selectively actuatable to engage a stationary surface to prevent the counterweight from of the mobile. The safety device is configured to cause wireless communication of substantially simultaneous actuation of the elevator car safety device and the counterweight safety device.

Description

Background technique [0001] Elevator systems are widely used. The machines used to control the movement of the elevator car can be hydraulic or traction. Elevator machines include machine brakes that effectively hold the elevator car stationary at a landing to allow passengers to enter or exit the car. [0002] Elevator systems typically include a safety device, which is a braking device used in the event that the elevator car is moving in an undesired manner. The governor device is usually roped to a safety device on one side of the elevator car. If the elevator car, for example, is moving at an undesirably high speed, the governor activates the safety device, causing the safety device to engage the guide rails to stop the elevator car. Some safety device configurations include linkage between safety devices on opposite sides of the elevator car. When the speed governor activates one of the safety devices, the linkage works to activate the other safety device and these sa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66B9/00B66B5/04
CPCB66B5/044B66B9/00B66B5/16B66B5/18B66B1/3461
Inventor W.T.施米德特E.马内斯
Owner OTIS ELEVATOR CO