Patent ID: 8342231

Claim:
A cast strip withdrawing apparatus for a continuous casting facility, comprising: a plurality of pairs of rolls disposed along a withdrawing direction of cast strips, a dummy bar being retained and withdrawn by a fixed-side roll and a clamping-side roll, which oppose each other, of each of said plurality of pairs of rolls; a fluid pressure cylinder provided to each of said clamping-side rolls, and imparting a dummy bar retaining pressure; and a source pressure side fluid line that supplies fluid pressure to said fluid pressure cylinder, wherein said source pressure side fluid line includes: a first pressure-reduction means for reducing the dummy bar retaining pressure; a pressure drop detection means for detecting a drop in the dummy bar retaining pressure; a line isolating means installed on a source pressure side of said pressure drop detection means, for isolating a source pressure side fluid line for which a drop in the dummy bar retaining pressure has been detected by way of said pressure drop detection means; and a bypass means for, when a drop in the dummy bar retaining pressure has been detected by way of said pressure drop detection means in any source pressure side fluid line, isolating by way of said line isolating means said source pressure side fluid line for which the drop has been detected, and simultaneously for letting a predetermined dummy bar retaining pressure which does not pass through said first pressure-reduction means to a side of a source pressure side fluid line for which a drop in the dummy bar retaining pressure has not been detected by said pressure drop detection means.