Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
ARC FURNACE ELECTRODE LIFTING DEVICE
Document Type and Number:
Japanese Patent JP2017126417
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an arc furnace electrode lifting device which can back up a limit switch without restrictions on hardware.SOLUTION: An arc furnace electrode lifting device 10 comprises: an electrode travel distance calculation unit 18 which outputs a travel distance of an electrode 2 on the basis of a rotational speed of an electric motor 22 for lifting/lowering the electrode; an electrode position determination unit 12 which determines a position of the electrode on the basis of the travel distance so as to output a stop signal for stopping the electrode; and a main control unit 14 which stops the lifting/lowering of the electrode on the basis of the stop signal. The electrode position determination unit outputs the stop signal if the travel distance is greater than a first threshold or lower than a second threshold.SELECTED DRAWING: Figure 1

Inventors:
ASAKA TAKATOSHI
Application Number:
JP2016003385A
Publication Date:
July 20, 2017
Filing Date:
January 12, 2016
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
TOSHIBA MITSUBISHI-ELECTRIC IND SYSTEM CORP
International Classes:
H05B7/152; F27B3/28; F27D11/10
Domestic Patent References:
JPH06260281A1994-09-16
JP2014060112A2014-04-03
JP2006085936A2006-03-30
JPH05217671A1993-08-27
JPH07191754A1995-07-28
JPH02150799U1990-12-27
JPS5187835A1976-07-31
JP2006009455A2006-01-12
Foreign References:
US3937869A1976-02-10
Attorney, Agent or Firm:
Masahiko Hinataji
Junichi Kozaki
Hiroshi Ichikawa