METHOD FOR SAFELY PERFORMING CONFIRMING WORK OF UNREMOVED DEFECT WITH STEEL DEFECT REMOVING MACHINE AND SAFETY DEVICE OF CONFIRMING WORK OF UNREMOVED DEFECT WITH STEEL DEFECT REMOVING MACHINE

摘要

PROBLEM TO BE SOLVED: To safely perform the confirming work of the unremoved defects by shutting out erroneous signals when performing the confirming work of unremoved defects after defect removing work with a defect removing machine in steel after blooming, when an erroneous signal from the control panel of the defect removing machine and an erroneous signal by others are generated.;SOLUTION: By spreading a mat 2 in which a switch 2b operated with a pressure sensor 2a on the floor 1 of the working position for the confirming work of the unremoved defects of the steel and putting the worker on this mat 2, the signal for informing entering in the working position of confirming work the unremoved defects is transmitted to the defect removing machine 6. By compulsorily making the signal to a servo valve 4b for operating the grinding part 7 of the defect removing machine 6 into the neutral state is operated by a sequence program 4a of the control panel 4 during this signal is in on-state, the operation of the grinder part 7 of the defect removing machine 6 by the erroneous signal and the erroneous operation by others is prevented and the work for confirming the unremoved defects with the defect removing machine 6 of the steel 10 is safely performed.;COPYRIGHT: (C)2008,JPO&INPIT