US 12,434,907 B2
Transport vehicle system
Makoto Kobayashi, Ise (JP)
Assigned to MURATA MACHINERY, LTD., Kyoto (JP)
Appl. No. 18/036,701
Filed by MURATA MACHINERY, LTD., Kyoto (JP)
PCT Filed Sep. 24, 2021, PCT No. PCT/JP2021/035104
§ 371(c)(1), (2) Date May 12, 2023,
PCT Pub. No. WO2022/107448, PCT Pub. Date May 27, 2022.
Claims priority of application No. 2020-191794 (JP), filed on Nov. 18, 2020.
Prior Publication US 2023/0406622 A1, Dec. 21, 2023
Int. Cl. H01L 21/00 (2006.01); B65G 1/04 (2006.01); B65G 43/00 (2006.01)
CPC B65G 1/0457 (2013.01) [B65G 43/00 (2013.01); B65G 2203/0233 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A transport vehicle system comprising:
an overhead transport vehicle including a lifter including a gripper to grip an article and operable to be lifted and lowered by a plurality of suspenders;
a measurer to measure a measurement target portion;
a measured portion including the measurement target portion thereon;
a controller configured or programmed to cause the lifter to be lifted and lowered according to a predetermined set value;
a maintenance trestle provided in a traveling area of the overhead transport vehicle and on which a placement table of the measurer is provided; and
a communicator to wirelessly transmit a result of measurement of the measured portion made by the measurer to the controller; wherein
the measured portion is a first unit grippable by the gripper;
the measurer is a second unit placeable on the placement table;
the first unit is placeable on the maintenance trestle in a state of being supported by the second unit placed on the placement table; and
the controller is configured or programmed to cause the gripper to grip the first unit in a state of being supported by the second unit at the placement table of the maintenance trestle and cause the lifter to lift so that the second unit in a state of being placed on the placement table is able to measure the first unit gripped by the gripper, and correct the set value based on a measurement result of the first unit transmitted via the communicator from the second unit in a state of being placed on the placement table.