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Elevator roller guide device with variable stiffness damper

A technology of guiding device and damper, which is applied in the field of elevator system, can solve problems such as not easy to realize, increasing time, increasing elevators, etc.

Inactive Publication Date: 2006-09-27
OTIS ELEVATOR CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A significant disadvantage of conventional configurations is that the springs only have one stiffness that is set during installation
Over time, it may be desirable to vary this stiffness, but this is not readily achievable with conventional configurations
Additionally, to achieve the desired lift ride quality, considerable adjustments need to be involved during installation, adding time and cost to the lift installation operation

Method used

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  • Elevator roller guide device with variable stiffness damper
  • Elevator roller guide device with variable stiffness damper
  • Elevator roller guide device with variable stiffness damper

Examples

Experimental program
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Embodiment Construction

[0014] FIG. 1 shows an elevator car assembly 20 including a booth 22 supported on a car frame 24 . For example, a plurality of roller guides 26 guide the movement of the car assembly 20 along guide rails 28 (only one shown) as the car assembly 20 moves through the hoistway in a conventional type manner.

[0015] Roller guides 26 include a plurality of rollers that roll along surfaces on guide rails 28 during movement of the car assembly. An example roller guide designed in accordance with the present invention is shown in FIG. 2 . In this example, the roller guide 26 includes a base 30 secured to an appropriate portion of the car frame 24 . A plurality of rollers 32 are placed in contact with selected surfaces on the guide rail 28 . Each roller rotates about a roller axis 34 during movement of the car along the guide rail in the vertical direction.

[0016] In this example, each roller 32 is supported on a roller mount 36 that is movable relative to the base 30 . In the il...

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PUM

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Abstract

An elevator system roller guide device (26) includes a plurality of rollers (32) that roll along a guide rail (28). Dampers (40) that have a selectively variable stiffness dampen lateral movements between the rollers (32) and roller guide device base (30) as the elevator car assembly (20) moves through a hoistway. In one example, the dampers include a magneto-rheological fluid. A controller (50) selectively controls a magnetic field generated by an electromagnet (52) to selectively control the viscosity of the magneto-rheological fluid and the stiffness of the dampers (40).

Description

technical field [0001] The present invention relates generally to elevator systems. More specifically, the present invention relates to roller guide systems for elevators. Background technique [0002] Elevator systems typically include a car that travels vertically within a hoistway to transport passengers or goods between different floors within a building. Guide rails extend through the hoistway to guide the movement of the car. A guidance system associated with the car follows the guide rails. Typical systems include guides with sliding guides or rollers. [0003] A common difficulty associated with conventional systems is that any misalignment of the rails or any unevenness in the surface of the rails reduces the ride quality of the elevator system. For example, rail alignment or surface inconsistencies are often transmitted through the guide system to the cabin of the car assembly, creating vibrations that are felt by passengers. [0004] Attempts have been made t...

Claims

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Application Information

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IPC IPC(8): B66B7/04B66B1/34
CPCB66B7/046B66B7/042B66B7/044
Inventor R·库拉克M·特蕾西
Owner OTIS ELEVATOR CO