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Centrifugally actuated govenor

A speed and motion technology, applied in the field of centrifugally actuated speed limiters, can solve the problems of poor material properties, difficult to buy, large tolerances, etc., to achieve the effect of magnetic field stabilization and elimination of manufacturing problems

Active Publication Date: 2009-10-21
OTIS ELEVATOR CO
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polymer springs are expensive, have limited performance due to poor material properties, are difficult to obtain commercially and have wide tolerances

Method used

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  • Centrifugally actuated govenor
  • Centrifugally actuated govenor
  • Centrifugally actuated govenor

Examples

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Embodiment Construction

[0017] Wherever possible, the same or like reference numerals have been used for the same or like parts throughout the drawings.

[0018] figure 1 Elevator system 10 is shown including elevator car 12 , guide rails 14 , and governor assembly 16 . The governor assembly 16 includes a trip sheave 18 , a governor 20 , a bead 22 and a tension sheave 24 . An elevator car 12 travels on or is slidably connected to guide rails 14 and travels inside a hoistway (not shown). The tripping sheave 18 and speed governor 20 are installed at the upper end of the hoistway in this embodiment. The loop 22 is wrapped partially around the trip sheave 18 and partially around the take-up sheave 24 (located at the bottom end of the hoistway in this embodiment). The rope loop 22 is also connected to the elevator car 12 , ensuring that the angular velocity of the tripping sheave 18 is related to the speed of the elevator car 12 .

[0019] In the elevator system 10 as shown, the speed governor assembl...

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PUM

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Abstract

An assembly (20) for controlling movement of an elevator car (12), which includes a sheave (18), a first mass (32a, 48a), a second mass (32b, 48b), and a coupler (54) that provides a releasable non-elastic connection between the masses. The sheave (18) is configured to rotate about an axis of rotation (30) at a velocity related to a velocity of the elevator car (12). The first (32a, 48a) and second (32b, 48b) masses are attached to the sheave (18) at first and second pivot points (42a, 42b) radially spaced from the sheave axis of rotation (30). The coupler (54) that provides the releasable non-elastic connection between the first (32a, 48a) and second (32b, 48b) masses is configured to prevent pivotal movement of the masses at sheave angular velocities less than a first velocity and to permit pivotal movement of the masses at velocities greater than the first velocity.

Description

【Technical field】 [0001] The present invention relates to a device for controlling the speed of an elevator car. More specifically, the present invention relates to a centrifugally actuated overspeed governor. 【Background technique】 [0002] A common challenge in elevator design is engineering safety systems to prevent or respond to elevator failures. One such safety system is a speed limiter. Elevator speed governors are designed to prevent the elevator car from exceeding a set speed limit. The speed governor is a component in an automatic safety system that is activated when the elevator car exceeds a set speed and either signals the control system to stop the car or directly engages a safety device to stop the car. One well known overspeed governor is the centrifugally actuated overspeed governor. [0003] A common design for a centrifugal governor used in elevator systems employs two weights connected in kinematically opposed configurations by linkages and pinned to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B1/26
CPCB66B5/044B66B1/24B66B1/26B66B5/02B66B5/04
Inventor R·S·杜贝
Owner OTIS ELEVATOR CO
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