Filament breakage detection apparatus for steel stranded wire

The invention relates to a device for detecting broken steel strand, which is mainly used for detecting the wire-breaking when an I-shaped wheel pays off lines during the production process of the steel strand. The device comprises a pressing line wheel (2), a supporting wheel (3), a position limit switch (4), a boat bracket (5), a wireless emitting device (6) and a wireless receiving device; thepressing line wheel (2) is rotatablely connected on the boat bracket (5) in a cantilever shape; the supporting wheel (3) is fixedly connected on the boat bracket (5); the pressing line wheel (2) is pressed on a steel wire at the lay-off outlet (1) of the I-shaped wheel; the supporting wheel (3) is supported at the steel wire at the pay-off outlet (1) of the I-shaped wheel; the position limit switch (4) is fixedly arranged on the boat bracket (5); the position of the position limit switch (4) on the boat bracket (5) corresponds to the falling position of the pressing line wheel (2); the wireless emitting device (6) is