Title:
LIFTING MAGNET WORK MACHINE
Document Type and Number:
Japanese Patent JP2017128412
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a lifting magnet work machine in a relatively low cost configuration, capable of effectively using a regenerative electric power discharged from an electromagnet when a lifting magnet is released.SOLUTION: A lifting magnet comprises: an engine; a motor generator mechanically coupled to the engine; an inverter connected to the motor generator; a DC bus connected to the inverter; a drive circuit connected with the DC bus; and a lifting magnet connected with the drive circuit and having an electromagnet generating an electromagnetic attraction force using electric power supplied by the motor generator. The drive circuit controls excitation state of the electromagnet, while the inverter supplies regenerative electric power discharged from the electromagnet through the drive circuit when the lifting magnet is released.SELECTED DRAWING: Figure 4
Inventors:
SANO KIMINORI
Application Number:
JP2016008192A
Publication Date:
July 27, 2017
Filing Date:
January 19, 2016
Export Citation:
Assignee:
SUMITOMO SHI CONSTRUCTION MACHINERY CO LTD
International Classes:
B66C1/08; B66C1/06; H02P9/04
Domestic Patent References:
| JP2017001868A | 2017-01-05 | |||
| JP2010137943A | 2010-06-24 | |||
| JP2010173599A | 2010-08-12 | |||
| JP2011105454A | 2011-06-02 | |||
| JP2010011602A | 2010-01-14 | |||
| JPS61156491U | 1986-09-27 | |||
| JP2004299818A | 2004-10-28 |
Foreign References:
| WO2006080100A1 | 2006-08-03 | |||
| WO2013061893A1 | 2013-05-02 | |||
| US20120074790A1 | 2012-03-29 |
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Tadahiko Ito