Elevator seismic performance apparatus

Patent metadata

Field	Value
Publication number	US-11214464-B2
Application number	US-201815981454-A
Country	US
Kind code	B2
Filing date	May 16, 2018
Priority date	May 16, 2018
Publication date	Jan 4, 2022
Grant date	Jan 4, 2022

Abstract

An elevator car of an elevator system includes a car body, and a car frame supportive of the car body. The car frame includes two or more opposing upright assemblies, a crosshead assembly located above the car body, and a plank assembly located below the car body. A plurality of seismic retainers are located at each of the upright assemblies. The plurality of seismic retainers are configured for a non-contact relationship with a guide rail of the elevator system during normal operation of the elevator system, and configured to react guide rail loads during a sway event via contact with the guide rail.

First claim

What is claimed is:

1. An elevator car of an elevator system, comprising:
a car body;
a car frame supportive of the car body, the car frame including:
two or more opposing upright assemblies;
a crosshead assembly disposed above the car body; and
a plank assembly disposed below the car body;

two or more elevator car guides disposed at the elevator car configured for contact with the guide rail during normal operating conditions of the elevator system; and
a plurality of seismic retainers affixed directly to each of the upright assemblies, separate and spaced apart from the two or more elevator car guides, the plurality of seismic retainers configured for a non-contact relationship with a guide rail of the elevator system during normal operation of the elevator system, and configured to contact the guide rail during a seismic or rope sway event thus reacting loads applied to the guide rail during the seismic or rope sway event;
wherein an elevator car guide of the two or more elevator car guides is disposed at each vertical end of the car frame;
wherein each upright assembly includes:
two or more vertically extending upright members; and,
a plurality of upright braces extending between the upright members; and

wherein two upright braces of the plurality of upright braces intersect between the upright members; and
wherein a seismic retainer of the plurality of seismic retainers is disposed at an intersection of the two upright braces.

2. The elevator car of claim 1 , wherein the seismic retainer includes a retainer slot having a retainer slot width greater than a blade width of the guide rail disposed in the retainer slot.

3. The elevator car of claim 2 , further comprising one or more wear pads disposed in the retainer slot.

4. The elevator car of claim 1 , wherein three or more seismic retainers are disposed at each upright assembly.

5. The elevator car of claim 1 , further comprising two or more car bodies disposed between the cross head assembly and the plank assembly.

6. An elevator system, comprising:
one or more guide rails;
an elevator car operably connected to and movable along the one or more guide rails, the elevator car including:
a car body;
a car frame supportive of the car body, the car frame including:
two or more opposing upright assemblies;
a crosshead assembly disposed above the car body; and
a plank assembly disposed below the car body;

two or more elevator car guides disposed at the elevator car configured for contact with the guide rail during normal operating conditions of the elevator system; and
a plurality of seismic retainers affixed directly to each of the upright assemblies, separate and spaced apart from the two or more elevator car guides, the plurality of seismic retainers configured for a non-contact relationship with a guide rail of the elevator system during normal operation of the elevator system, and configured to contact the guide rail during a seismic or rope sway event thus reacting loads applied to the guide rail during the seismic or rope sway event;

wherein an elevator car guide of the two or more elevator car guides is disposed at each vertical end of the car frame;
wherein each upright assembly includes:
two or more vertically extending upright members; and,
a plurality of upright braces extending between the upright members; and

wherein two upright braces of the plurality of upright braces intersect between the upright members; and
wherein a seismic retainer of the plurality of seismic retainers is disposed at an intersection of the two upright braces.

7. The elevator system of claim 6 , wherein the seismic retainer includes a retainer slot having a retainer slot width greater than a blade width of the guide rail disposed in the retainer slot.

8. The elevator system of claim 6 , wherein three or more seismic retainers are disposed at each upright assembly.

9. The elevator system of claim 6 , further comprising two or more car bodies disposed between the crosshead assembly and the plank assembly.

Assignees

• Otis Elevator Co

Inventors

• Ericson Richard J
• Swaybill Bruce P
• Mastriano Meghan
• Cheng Loi

Classifications

• B66B11/0266

  Passive systems (aerodynamic structure B66B11/0226) · CPC title

• B66B11/0206

  Car frames · CPC title

• B66B7/10

  for equalising rope or cable tension · CPC title

• B66B11/0226

  Constructional features, e.g. walls assembly, decorative panels, comfort equipment, thermal or sound insulation · CPC title

• B66B11/0213

  for multi-deck cars · CPC title