JPS6457604A - Lifting electromagnet and method of controlling same - Google Patents
Lifting electromagnet and method of controlling sameInfo
- 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
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.
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)
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 |
-
1987
- 1987-04-30 JP JP10437187A patent/JPS6457604A/en active Granted
Cited By (2)
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 |