Maintenance access zones for storage and retrieval systems

Patent metadata

Field	Value
Publication number	US-10974910-B2
Application number	US-201916716130-A
Country	US
Kind code	B2
Filing date	Dec 16, 2019
Priority date	Dec 15, 2010
Publication date	Apr 13, 2021
Grant date	Apr 13, 2021

Abstract

A maintenance access system for a storage and retrieval system having a storage and retrieval space and automated transport vehicles disposed in the space. The system includes at least one maintenance access control unit associated with a portion of the space, at least one barrier in the space and defining a boundary of the portion of the space and configured to substantially prevent the passage of the vehicles past the at least one barrier, and a controller connected to the control unit, the controller being configured to receive a signal from the at least one control unit for isolating the portion of the space associated with the at least one control unit, where the controller in response to the signal closes the at least one barrier isolating the portion of the space and effects the removal from or shutting down of vehicles within the portion of the space.

First claim

What is claimed is:

1. A human access system for a storage and retrieval system having a storage and retrieval space and automated transport vehicles disposed in the storage and retrieval space, the human access system comprising:
at least one human access control unit associated with a portion of the storage and retrieval space, the portion of the storage and retrieval space having at least one store shelf;
at least one control device located in the storage and retrieval space and defining a boundary of the portion of the storage and retrieval space, the at least one control device being configured to stop the passage of the automated transport vehicles past the at least one control device; and
a controller connected to the human access control unit, the controller being configured to receive a signal from the at least one human access control unit for isolating the portion of the storage and retrieval space associated with the at least one human access control unit;
wherein in response to the signal, the controller:
isolates the portion of the storage and retrieval space with the control device that stops automated transport vehicles from entering a human access zone, the human access zone is defined by the at least one store shelf, the human access zone including at different levels within the portion of the storage and retrieval space, and effects routing of operative automated transport vehicles away from the human access zone, and
stops autonomous transport vehicles within the human access zone, wherein continued operation of autonomous transport vehicles is allowed outside the human access zone.

2. The human access system of claim 1 , wherein the human access zone includes at least one picking aisle of the storage and retrieval system, wherein the at least one picking aisle is arranged in a vertical stack of picking aisles.

3. The human access system of claim 1 , wherein the human access zone includes a transfer deck of the storage and retrieval system, wherein the transfer deck provides the autonomous transport vehicles access to one or more picking aisles and/or one or more lift transfer areas.

4. The human access system of claim 1 , wherein human access zone includes a lift transfer area, wherein the lift transfer area allows the autonomous transport vehicles to transfer cases between the lift and the picking aisles.

5. The human access system of claim 1 , wherein:
the human access zone includes multiple picking aisles arranged in a vertical stack, wherein the picking aisle at a bottom of the stack includes a floor, and the picking aisles above the picking aisle at the bottom of the stack within the human access zone are substantially floorless.

6. The human access system of claim 1 , wherein:
the storage and retrieval space includes:
multiple storage levels, each level including picking aisles,
a transfer deck common to each picking aisle, and
lift transfer areas connected to the transfer deck; wherein
the at least one control device is located at one or more of an end of at least one of: the picking aisles, an entrance/exit of the lift transfer areas, and portions of the transfer deck.

7. The human access system of claim 6 , wherein the at least one control device includes one or more of nets, fences and screens.

8. The human access system of claim 6 , wherein the at least one control device comprises at least one motorized control device that is actuated to substantially block the one or more of the end of at least one of: the picking aisles, the entrance/exit of the lift transfer areas, and the portions of the transfer deck.

9. A method of operating an automated warehouse system comprising:
providing a storage and retrieval space with storage locations, a portion of the storage and retrieval space having at least one store shelf;
providing at least one autonomous transport vehicle that travels within the storage and retrieval space;
disposing human access zones, each human access zone having at least one human access control unit associated with the at least one store shelf at different levels within the portion of the storage and retrieval space;
providing a control device located in the storage and retrieval space, the control device defining a boundary of the portion of the storage and retrieval space, the at least one control device being configured to stop the passage of the automated transport vehicles past the at least one control device; and
signaling, with a controller communicably connected to the control device, a status change of the at least one human access control unit to isolate the portion of the storage and retrieval space associated with the human access control unit;
wherein in response to the signal from the controller, the at least one autonomous transport vehicle within a corresponding human access zone stops, while other autonomous transport vehicles outside of the corresponding human access zone continue operation in the storage and retrieval space outside the corresponding human access zone.

10. The method of claim 9 , further comprising providing the at least one autonomous transport vehicle with a transfer arm configured to transfer items to and from the storage locations of the storage and retrieval space.

11. The method of claim 9 , further comprising transferring case units to and from the storage locations of the storage and retrieval space with the at least one autonomous transport vehicle.

12. The method of claim 9 , further comprising providing the at least one autonomous transport vehicle access, with a transfer deck, to at least one of one or more picking aisles and one or more vertical lift transfer areas disposed in the storage and retrieval space.

13. The method of claim 9 , further comprising transferring items between a vertical lift and the storage locations of the storage and retrieval space with the at least one autonomous transport vehicle at a vertical lift transfer area.

14. An automated warehouse system comprising:
a storage and retrieval space with storage locations, a portion of the storage and retrieval space having at least one store shelf;
at least one autonomous transport vehicle that travels within the storage and retrieval space;
human access zones each having at least one human access control unit associated with the at least one store shelf, each of the human access zones include different levels within the portion of the storage and retrieval space;
a control device located in the storage and retrieval space, the control device is configured to define a boundary of the portion of the storage and retrieval space, the control device is further configured to stop the passage of the automated transport vehicles past the at least one control device; and
a controller communicably connected to the control device, the controller being configured to signal a status change of the at least one human access control unit to isolate the portion of the storage and retrieval space associated with the human access control unit;
wherein in response to the signal from the controller, the at least one autonomous transport vehicle within a corresponding human access zone stops while other autonomous transport vehicles outside the corresponding human access zone continue operation in the storage and retrieval space outside the corresponding human access zone.

15. The automated warehouse system of claim 14 , wherein the at least one autonomous transport vehicle includes a transfer arm configured to transfer items to and from the storage locations of the storage and retrieval space.

16. The automated warehouse system of clai

Assignees

• Symbotic Llc
• Symbolic Llc

Inventors

• Cyrulik Michael
• Sullivan Robert

Classifications

• B65G1/0492 Primary

  with cars adapted to travel in storage aisles · CPC title

• B65G1/06

  with means for presenting articles for removal at predetermined position or level (B65G1/12 takes precedence) · CPC title

• B65G2207/40

  Safety features of loads, equipment or persons · CPC title

• B65G47/883 Primary

  Fixed stop · CPC title

• B65G1/1373

  for fulfilling orders in warehouses · CPC title