Novel tubular belt anti-tearing device

The utility model discloses a novel tubular belt anti-tearing device, which belongs to the technical field of port conveying devices and is characterized by comprising a support assembly, a telescopic assembly and an induction assembly. The support assembly is provided with a polygonal opening and an annular cavity, the circle center of the annular cavity coincides with the center of the polygonal opening, a plurality of sliding ways are arranged on the support assembly, and the sliding ways penetrate through the annular cavity of the support assembly to be communicated with the polygonal opening. A telescopic assembly is installed on the support assembly and connected with a plurality of clamping rings. The clamping ring is placed in the polygonal opening of the bracket assembly; the transmission mechanism is driven by a power mechanism; the induction assembly comprises a pull rope and a travel switch, the pull rope sequentially penetrates through the clamping rings to form a polygon, the tail end of the pul