Patent ID: 11873199
Assignee: DAIFUKU CO., LTD.
Field: Handling (Mechanical engineering)
Classification: CPC B  H | IPC B

Claim 0:
1. An article transport facility comprising:
an article transport vehicle configured to transport an article; and
a delivery device configured to be a delivery destination of the article transported by the article transport vehicle,
wherein the article transport vehicle comprises:
a traveling cart configured to travel;
an elevation unit configured to be raised and lowered relative to the traveling cart; and
a transfer device mounted on the elevation unit,

wherein the elevation unit is raised and lowered between a traveling height that is a reference height during traveling of the traveling cart, and a transfer height for transfer of the article with the delivery device by the transfer device,
wherein the transfer device comprises:
a holder configured to hold the article; and
a self-propelled cart configured to support the holder and travel,

wherein the self-propelled cart comprises:
a wheel; and
a wheel drive source configured to drive the wheel,

wherein the self-propelled cart travels along a traveling path provided on the elevation unit and the delivery device,
wherein the delivery device comprises:
a positioning portion configured to position the elevation unit while the elevation unit is at the transfer height; and
a delivery-side guide configured to guide travel of the self-propelled cart along the traveling path,

wherein the elevation unit comprises an elevation-side guide configured to guide travel of the self-propelled cart along the traveling path,
wherein the elevation-side guide is arranged in such a manner as to be continuous with the delivery-side guide while the elevation unit is positioned by the positioning portion
wherein the delivery device further comprises an elevation guide configured to guide the elevation unit such that the elevation unit is positioned by the positioning portion during raising or lowering of the elevation unit to the transfer height, and
wherein the elevation guide includes at least one guiding surface configured to contact the elevation unit to correct displacement of the elevation unit.