JPS6457604A - Lifting electromagnet and method of controlling same - Google Patents

Lifting electromagnet and method of controlling same

Info

Publication number
JPS6457604A
JPS6457604A JP10437187A JP10437187A JPS6457604A JP S6457604 A JPS6457604 A JP S6457604A JP 10437187 A JP10437187 A JP 10437187A JP 10437187 A JP10437187 A JP 10437187A JP S6457604 A JPS6457604 A JP S6457604A
Authority
JP
Japan
Prior art keywords
control
exciting coils
exciting
rectifiers
currents flowing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP10437187A
Other languages
Japanese (ja)
Other versions
JPH0468762B2 (en
Inventor
Kunio Kajitani
Akira Hirohama
Masayoshi Usuki
Takeo Iioka
Yasutsugu Yoshimura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Sumitomo Heavy Industries Ltd
Original Assignee
Nippon Steel Corp
Sumitomo Heavy Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Steel Corp, Sumitomo Heavy Industries Ltd filed Critical Nippon Steel Corp
Priority to JP10437187A priority Critical patent/JPS6457604A/en
Publication of JPS6457604A publication Critical patent/JPS6457604A/en
Publication of JPH0468762B2 publication Critical patent/JPH0468762B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Load-Engaging Elements For Cranes (AREA)

Abstract

PURPOSE:To obtain a lifting electromagnet which is capable of erasing magnetism of a steel stock or the like and has a good cargo-working efficiency, by providing control means which control a first and a second rectifiers based on the detected current values thereby to control the currents flowing in a first and a second exciting coils with a predetermined timing, and other means. CONSTITUTION:There are provided a magnet provided with a first and a second exciting coils 4a, 4b which are respectively connected to a first and a second rectifiers 2, 3, detecting means 7a, 7b for respectively detecting the currents flowing in the first and second exciting coils 4a, 4b, and control means 9a, 9b which control the first and second rectifiers 2, 3 thereby to control the currents flowing in the first and second exciting coils 4a, 4b with a predetermined timing. Also, there is provided a step wherein, when the current flowing in one exciting coil of the magnet provided with the first and second exciting coils 4a, 4b reach a predefined set value, the current flowing in that exciting coil is attenuated and a current is made to flow in the other exciting coil, said step being performed plural times while sequentially reducing the set value.
JP10437187A 1987-04-30 1987-04-30 Lifting electromagnet and method of controlling same Granted JPS6457604A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10437187A JPS6457604A (en) 1987-04-30 1987-04-30 Lifting electromagnet and method of controlling same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10437187A JPS6457604A (en) 1987-04-30 1987-04-30 Lifting electromagnet and method of controlling same

Publications (2)

Publication Number Publication Date
JPS6457604A true JPS6457604A (en) 1989-03-03
JPH0468762B2 JPH0468762B2 (en) 1992-11-04

Family

ID=14378936

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10437187A Granted JPS6457604A (en) 1987-04-30 1987-04-30 Lifting electromagnet and method of controlling same

Country Status (1)

Country Link
JP (1) JPS6457604A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100953122B1 (en) * 2007-12-20 2010-04-20 서정열 Lifting electromagnet
CN102897642A (en) * 2011-07-26 2013-01-30 宝山钢铁股份有限公司 Capacitor inversion type magnetizing and demagnetizing lifting electromagnet

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100953122B1 (en) * 2007-12-20 2010-04-20 서정열 Lifting electromagnet
CN102897642A (en) * 2011-07-26 2013-01-30 宝山钢铁股份有限公司 Capacitor inversion type magnetizing and demagnetizing lifting electromagnet

Also Published As

Publication number Publication date
JPH0468762B2 (en) 1992-11-04

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees