US 12,312,185 B2
Tower lift, tower lift driving method, and machine readable medium
Na Hyun Lee, Ansan-si (KR); Sang-Oh Kim, Seoul (KR); Myungjin Lee, Hwaseong-si (KR); and Heejae Byun, Suwon-si (KR)
Assigned to SEMES CO., LTD., Cheonan-si (KR)
Filed by SEMES CO., LTD., Cheonan-si (KR)
Filed on Mar. 10, 2021, as Appl. No. 17/198,200.
Claims priority of application No. 10-2020-0038542 (KR), filed on Mar. 30, 2020.
Prior Publication US 2021/0300693 A1, Sep. 30, 2021
Int. Cl. B65G 54/02 (2006.01); B65G 43/02 (2006.01); B66B 11/04 (2006.01); H01L 21/67 (2006.01); H01L 21/677 (2006.01); B66B 9/00 (2006.01)
CPC B65G 54/02 (2013.01) [B65G 43/02 (2013.01); B66B 11/0407 (2013.01); H01L 21/67178 (2013.01); H01L 21/67709 (2013.01); B65G 2203/0275 (2013.01); B66B 9/003 (2013.01); B66B 2201/303 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A tower lift comprising:
a rail module extending in a vertical direction;
a plurality of carriage modules configured to be movable along the rail module, each carriage module having a carriage configured to carry an object; and
an interference avoidance module configured to avoid travel interference between the plurality of carriage modules traveling opposite directions along the rail module,
wherein the rail module includes:
a frame extending in the vertical direction; and
a linear motor coil installed on the frame,
wherein each of the plurality of carriage modules includes a linear motor magnet coupled with the carriage and configured to interact with the linear motor coil to move the carriage in the vertical direction,
wherein the linear motor coil includes a plurality of linear motor coils installed on the frame so as to be spaced apart from each other along the vertical direction,
wherein each of the plurality of linear motor coils includes a pair of linear motor coils spaced apart from each other, and
wherein a part of the linear motor magnet, when viewed in a plan view, is inserted into a space between the pair of linear motor coils.