US 12,214,996 B2
Notification system
Yusuke Fujiwara, Hiroshima (JP); Seiji Saiki, Hiroshima (JP); and Natsuki Yumoto, Hiroshima (JP)
Assigned to KOBELCO CONSTRUCTION MACHINERY CO., LTD., Hiroshima (JP)
Appl. No. 17/758,895
Filed by KOBELCO CONSTRUCTION MACHINERY CO., LTD., Hiroshima (JP)
PCT Filed Jan. 19, 2021, PCT No. PCT/JP2021/001642
§ 371(c)(1), (2) Date Nov. 16, 2022,
PCT Pub. No. WO2021/157336, PCT Pub. Date Aug. 12, 2021.
Claims priority of application No. 2020-015989 (JP), filed on Feb. 3, 2020.
Prior Publication US 2023/0219791 A1, Jul. 13, 2023
Int. Cl. B66C 1/08 (2006.01); B66C 1/06 (2006.01); H01F 7/18 (2006.01); B66C 15/06 (2006.01); G08B 7/06 (2006.01)
CPC B66C 1/08 (2013.01) [B66C 1/06 (2013.01); H01F 7/18 (2013.01); B66C 15/065 (2013.01); G08B 7/06 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A notification system which notifies a state of a lifting magnet attached to a magnet working machine and having an attraction quantity changing in accordance with an electric supply, the notification system comprising:
a notifier which notifies an operator of the state of the lifting magnet;
a detector which detects at least one of a voltage, an electric current, and an electric power supplied for exciting the lifting magnet;
a determination part which determines, based on detection data from the detector, whether the attraction quantity of the lifting magnet reaches a maximum attraction quantity after excitation of the lifting magnet is started; and
a notification control part which causes the notifier to notify that the attraction quantity reaches the maximum attraction quantity when the determination part determines that the attraction quantity reaches the maximum attraction quantity.