US 12,441,374 B2
OHT vehicle traction device and method for recoverying malfunctioned vehicle
Ki Sub Yoon, Suwon-si (KR); and Ji Yoon Jung, Ansan-si (KR)
Assigned to SEMES CO., LTD., Cheonan-si (KR)
Filed by SEMES CO., LTD., Cheonan-si (KR)
Filed on Oct. 5, 2021, as Appl. No. 17/494,717.
Claims priority of application No. 10-2020-0128814 (KR), filed on Oct. 6, 2020.
Prior Publication US 2022/0106169 A1, Apr. 7, 2022
Int. Cl. B61B 3/02 (2006.01); B65G 1/04 (2006.01); B66C 11/04 (2006.01); B66C 13/48 (2006.01); B66C 15/04 (2006.01); H01L 21/677 (2006.01); H02J 50/10 (2016.01)
CPC B61B 3/02 (2013.01) [B65G 1/0421 (2013.01); B66C 11/04 (2013.01); B66C 13/48 (2013.01); B66C 15/04 (2013.01); H01L 21/67733 (2013.01); H02J 50/10 (2016.02); H01L 21/6773 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An overhead hoist transport (OHT) vehicle traction device comprising:
a moving unit configured to be driven on a rail of an OHT system;
a wireless power supply unit configured to wirelessly provide power to a driving-malfunction vehicle having a wireless power input unit;
a traction unit configured to be engaged with a traction jig fastener of the driving-malfunction vehicle to tow the driving-malfunction vehicle;
a traction jig fastener configured to be engaged with a traction unit of the driving-malfunction vehicle to tow the driving-malfunction vehicle;
a traction jig controller; and
a malfunction vehicle control unit,
wherein the traction unit comprises:
a traction support member protruding forward; and
a traction jig mounted at an end of the traction support member and configured to be fastened to the traction jig fastener of the driving-malfunction vehicle,
wherein the traction jig comprises:
a hooked jig configured to be fastened to a ring-shaped traction jig fastener; and
a rotary jig joint connected to an end of the hooked jig and configured to fasten or separate the hooked jig to or from the traction jig fastener by rotating the hooked jig,
wherein the traction jig controller controls rotation of the rotary jig joint, and
wherein the malfunction vehicle control unit is configured to:
control the traction jig controller to couple the traction jig to the traction jig fastener;
control the wireless power supply unit to wirelessly supply power to the driving-malfunction vehicle;
wirelessly reset a controller of the driving-malfunction vehicle having a wireless control communication module;
check whether the controller of the driving-malfunction vehicle is normally operated; and
control the driving-malfunction vehicle via the wireless control communication module so that a brake of the driving-malfunction vehicle is released and a steering device of the driving-malfunction vehicle is controlled.