Title:
CONTROL DEVICE AND METHOD FOR HOIST
Document Type and Number:
WIPO Patent Application WO/2011/040636
Kind Code:
A1
Abstract:
Disclosed is a control device for a hoist, by which the life of the brake of a hoisting device can be easily determined. A time setting unit sets the time between the start of a double winding induction motor and the braking release of the brake, and the time between the braking start of the brake and the stop of the double winding induction motor according to the time between the start of the double winding induction motor and the generation of torque. A time changing unit can detect either 50 Hz or 60 Hz of the power supply frequency of power supply to change at least one of the time between the start of the double winding induction motor and the braking release of the brake, or the time between the stop of the drive of the brake and the stop of the double winding induction motor with the power supply frequency of the power supply.
Inventors:
MARUNO MASAHARU (JP)
MATSUO DAISUKE (JP)
FURUKAWA KAZUHO (JP)
MATSUO DAISUKE (JP)
FURUKAWA KAZUHO (JP)
Application Number:
PCT/JP2010/067492
Publication Date:
April 07, 2011
Filing Date:
September 29, 2010
Export Citation:
Assignee:
MITSUBISHI ELECTRIC FA IND PRODUCTS CORP (JP)
KITO KK (JP)
MARUNO MASAHARU (JP)
MATSUO DAISUKE (JP)
FURUKAWA KAZUHO (JP)
KITO KK (JP)
MARUNO MASAHARU (JP)
MATSUO DAISUKE (JP)
FURUKAWA KAZUHO (JP)
International Classes:
B66D1/46; H02P3/04
Foreign References:
| JPS59124690A | 1984-07-18 | |||
| JPH03111397A | 1991-05-13 | |||
| JPH05319788A | 1993-12-03 | |||
| JP2001151473A | 2001-06-05 | |||
| JPH0336197A | 1991-02-15 | |||
| JPS49124515A | 1974-11-28 |
Other References:
See also references of EP 2484625A4
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
Aoki 篤 (JP)
Aoki 篤 (JP)
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