Knitting machine broken line alarm device

The utility model discloses a knitting machine broken line alarm device which comprises a device bottom plate, and a broken line detection alarm mechanism is arranged at the top of the device bottom plate. The wire breakage detection alarm mechanism comprises a fixed plate body, a first fixed rod, a first rotating wheel, a gear, a connecting plate and a rotating speed sensor; a first fixing rod penetrates through the middle of the interior of the fixing plate body, the front side of the first fixing rod penetrates through the fixing ring and the first rotating wheel, the inner side of the first rotating wheel is fixedly connected with a first fixing rod, and the rear side of the first fixing rod penetrates through the gear. According to the utility model, the first fixing rod and the gearon the fixing plate and the rotating speed sensor on the connecting plate are arranged; when a braided wire passes through the first rotating wheel, the braided wire drives the first rotating wheel and the gear to rotate, so