Wheel wear monitoring systems for shuttles powered by linear synchronous motors

Patent metadata

Field	Value
Publication number	US-12240711-B1
Application number	US-202318342544-A
Country	US
Kind code	B1
Filing date	Jun 27, 2023
Priority date	Jun 27, 2023
Publication date	Mar 4, 2025
Grant date	Mar 4, 2025

Abstract

Systems and methods are disclosed for wheel wear monitoring systems for shuttles powered by linear synchronous motors. An example system may include a first rail segment that forms a first side of the track, the first rail segment having a first aperture, a second rail segment that forms a second side of the track, the second rail segment having a second aperture, and a first camera disposed adjacent to the first aperture. The system may include a second camera disposed adjacent to the second aperture, and a controller configured to determine a first set of images of a first wheel of the shuttle using the first camera, determine a second set of images of a second wheel of the shuttle using the second camera, and determine a wear status of the first wheel based at least in part on the first set of images.

First claim

That which is claimed is:

1. A system comprising:
a track having a central axis, the track comprising a first rail segment on a first side of the central axis and a second rail segment on a second side of the central axis, the first rail segment having a first aperture and a second aperture;
a shuttle configured to transport one or more items from a first location to a second location using the track, the shuttle comprising a permanent magnet and a first conveyor assembly having a central axis that is transverse to the central axis of the track, wherein the first shuttle is configured to support the one or more items on the first conveyor assembly;
a set of electromagnets disposed along the central axis of the track, wherein the set of electromagnets interact with the permanent magnet to propel the shuttle;
a first camera disposed adjacent to the first rail segment;
a second camera disposed adjacent to the second rail segment; and
a controller configured to:
determine a first set of images of a first wheel of the shuttle using the first camera;
determine a second set of images of a second wheel of the shuttle using the second camera; and
determine a wear status of the first wheel based at least in part on the first set of images.

2. The system of claim 1 , wherein the first rail segment comprises a first aperture formed in a first sidewall of the first rail segment, and the second rail segment comprises a second aperture formed in a second sidewall of the second rail segment;
wherein the first camera and the second camera are disposed in a sideways-facing arrangement adjacent to the respective first and second apertures.

3. The system of claim 1 , wherein the controller is further configured to:
determine, using the first set of images, a vertical distance between a lower portion of the first rail segment and a wheel block adjacent to the first wheel;
wherein the controller is configured to determine the wear status of the first wheel based at least in part on the vertical distance.

4. The system of claim 1 , wherein the controller is further configured to:
determine a first distance between a first sidewall of the first rail segment and a first lateral edge of the shuttle using the first camera; and
determine a second distance between a second sidewall of the second rail segment and a second lateral edge of the shuttle using the second camera.

5. A system for monitoring wheel wear for a shuttle moving along a track, the system comprising:
a first rail segment that forms a first side of the track, the first rail segment comprising a first aperture;
a second rail segment that forms a second side of the track, the second rail segment comprising a second aperture;
a first camera disposed adjacent to the first aperture;
a second camera disposed adjacent to the second aperture; and
a controller configured to:
determine a first set of images of a first wheel of the shuttle using the first camera;
determine a second set of images of a second wheel of the shuttle using the second camera; and
determine a wear status of the first wheel based at least in part on the first set of images.

6. The system of claim 5 , wherein the first aperture is formed in a first sidewall of the first rail segment, and the second aperture is formed in a second sidewall of the second rail segment;
wherein the first camera and the second camera are disposed in a sideways-facing arrangement.

7. The system of claim 5 , wherein the first aperture is formed in a first lower portion of the first rail segment, and the second aperture is formed in a second lower portion of the second rail segment; and
wherein the first camera and the second camera are disposed in an upwards-facing arrangement.

8. The system of claim 5 , wherein the controller is further configured to:
determine, using the first set of images, a vertical distance between a lower portion of the first rail segment and a wheel block adjacent to the first wheel;
wherein the controller is configured to determine the wear status of the first wheel based at least in part on the vertical distance.

9. The system of claim 5 , wherein the controller is further configured to:
determine a first distance between a first sidewall of the first rail segment and a first lateral edge of the shuttle using the first camera; and
determine a second distance between a second sidewall of the second rail segment and a second lateral edge of the shuttle using the second camera.

10. The system of claim 9 , wherein the controller is further configured to:
determine a lateral wear status of the first wheel using the first distance.

11. The system of claim 5 , wherein the controller is further configured to:
determine a diameter of the first wheel using the first set of images.

12. The system of claim 5 , wherein the controller is further configured to:
determine a shuttle identifier of the shuttle; and
cause the wear status of the first wheel to be stored in association with the shuttle identifier.

13. The system of claim 5 , wherein the controller is further configured to:
determine that the second wheel is due for maintenance based at least in part on the second set of images; and
cause the shuttle to be routed to a maintenance station.

14. The system of claim 5 , wherein the controller is further configured to:
determine a third set of images of a third wheel of the shuttle using the first camera;
determine a fourth set of images of a fourth wheel of the shuttle using the second camera; and
determine that the third wheel is due for replacement;
wherein the first wheel and the third wheel are on a first side of the shuttle, and the second wheel and the fourth wheel are on a second side of the shuttle.

15. The system of claim 5 , wherein the shuttle comprises a conveyor and a permanent magnet; and
wherein the track comprises an electromagnet disposed along the track, wherein the shuttle is propelled via interaction between the electromagnet and the permanent magnet.

16. A system comprising:
a track comprising a first rail segment and a second rail segment, wherein the first rail segment forms a first side of the track, and the second rail segment forms a second side of the track;
a shuttle configured to move along the track;
a first camera disposed adjacent to the first rail segment;
a second camera disposed adjacent to the second rail segment; and
a controller configured to:
determine a first set of images of a first wheel of the shuttle using the first camera;
determine a second set of images of a second wheel of the shuttle using the second camera; and
determine a wear status of the first wheel based at least in part on the first set of images.

17. The system of claim 16 , wherein the controller is further configured to:
determine, using the first set of images, a vertical distance between a lower portion of the first rail segment and a wheel block adjacent to the first wheel;
wherein the controller is configured to determine the wear status of the first wheel based at least in part on the vertical distance.

18. The system of claim 16 , wherein the controller is further configured to:
determine a first distance between a first sidewall of the first rail segment and a first lateral edge of the shuttle using the first camera; and
determine a second distance between a second sidewall of the second rail segment and a second lateral edge of the shuttle using the second camera.

19. The system of claim 16 , wherein the controller is further configured

Assignees

• Amazon Tech Inc

Inventors

• Bray Michael Alan
• Somavar Muniappan Vinodhkumar
• Natarajan Divya
• Krishnamoorthy Ganesh
• Dhami Gurjinder Singh

Classifications

• B65G43/02

  detecting dangerous physical condition of load carriers, e.g. for interrupting the drive in the event of overheating · CPC title

• B65G54/02 Primary

  electrostatic, electric, or magnetic · CPC title

• B65G2207/48

  Wear protection or indication features · CPC title

• B65G2811/0673

  Control of conveying operations · CPC title

• H02K41/031 Primary

  of the permanent magnet type · CPC title