Elevator governor tension frame damper

Patent metadata

Field	Value
Publication number	US-11738971-B2
Application number	US-202117358425-A
Country	US
Kind code	B2
Filing date	Jun 25, 2021
Priority date	Jun 25, 2021
Publication date	Aug 29, 2023
Grant date	Aug 29, 2023

Abstract

An illustrative example embodiment of an elevator governor includes a rotatable governor mechanism, a tension sheave, and a tension frame associated with the tension sheave. The tension frame has a mass configured to bias the tension frame and the tension sheave under an influence of gravity. A damper is configured to resist vertical movement of the tension frame relative to a fixed surface in a first condition and to allow vertical movement of the tension frame relative to the fixed surface in a second, different condition.

First claim

I claim:

1. An elevator governor, comprising:
a rotatable governor mechanism;
a tension sheave;
a tension frame associated with the tension sheave, the tension frame having a mass configured to bias the tension frame and the tension sheave under an influence of gravity; and
a damper configured to resist vertical movement of the tension frame relative to a fixed surface in a first condition, the damper being configured to allow vertical movement of the tension frame relative to the fixed surface in a second, different condition,
wherein
the damper includes a coupling configured to secure at least one portion of the damper to the tension frame, and
the coupling allows for at least some lateral movement of the tension frame relative to the damper.

2. The elevator governor of claim 1 , wherein
the first condition includes a first speed of movement of the tension frame above a threshold speed or a first frequency of movement of the tension frame above a threshold frequency, and
the second condition includes a second speed of movement of the tension frame below the threshold speed or a second frequency of movement of the tension frame below the threshold frequency.

3. The elevator governor of claim 1 , wherein
the damper has a damping force that resists the vertical movement of the tension frame, and
the damping force changes with a change in a speed of vertical movement of the tension frame.

4. The elevator governor of claim 1 , wherein
the first condition comprises a time during movement of an associated elevator car or within a selected range after completion of movement of the associated elevator car, and
the second condition comprises a time while the associated elevator car is stationary and outside the selected range.

5. The elevator governor of claim 1 , wherein
the damper comprises a base and a mounting frame,
the mounting frame is configured to be secured to the fixed surface,
the mounting frame is configured to resist vertical movement of the base, and
the mounting frame is configured to allow for at least some lateral movement of the base relative to the mounting frame.

6. The elevator governor of claim 5 , wherein the mounting frame is configured to be secured to at least one of a floor surface and a wall surface in a hoistway.

7. An elevator system, comprising
the elevator governor of claim 1 ,
an elevator car; and
a governor rope coupled with the elevator car, the governor rope wrapping at least partially around the governor mechanism and the tension sheave, wherein movement of the elevator car causes movement of the governor rope and rotational movement of the governor mechanism.

8. The elevator system of claim 7 , comprising a device that determines elevator car movement and wherein the governor provides an additional indication of the elevator car movement.

9. An elevator governor, comprising:
a rotatable governor mechanism;
a tension sheave;
a tension frame associated with the tension sheave, the tension frame having a mass configured to bias the tension frame and the tension sheave under an influence of gravity; and
a damper configured to resist vertical movement of the tension frame relative to a fixed surface in a first condition, the damper being configured to allow vertical movement of the tension frame relative to the fixed surface in a second, different condition,
wherein
the damper comprises a base and a mounting frame,
the mounting frame is configured to be secured to the fixed surface,
the mounting frame is configured to resist vertical movement of the base, and
the mounting frame is configured to allow for at least some lateral movement of the base relative to the mounting frame.

10. The elevator governor of claim 9 , wherein the mounting frame is configured to be secured to at least one of a floor surface and a wall surface in a hoistway.

Assignees

• Otis Elevator Co

Inventors

• Hollowell Richard L

Classifications

• B66B5/044 Primary

  Mechanical overspeed governors · CPC title

• B66B1/26

  mechanical · CPC title

• B66B5/16

  Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well · CPC title

• B66B7/06 Primary

  Arrangements of ropes or cables · CPC title

• B66B7/10

  for equalising rope or cable tension · CPC title