Deck type bridge pier high-altitude construction anti-falling device capable of automatically ascending and descending

The utility model relates to the technical field of bridge pier safety devices, in particular to a deck type automatic lifting bridge pier high-altitude construction anti-falling device which comprises an anti-falling mechanism, a driving mechanism and a positioning mechanism, and the anti-falling mechanism comprises a supporting ring arranged on a bridge pier in a sleeving mode and an anti-falling net arranged on the supporting ring; the driving mechanism comprises a driving wheel rotationally arranged on the supporting ring, and the driving wheel is attached to the side wall of the bridge pier; the positioning mechanism comprises a positioning wheel, a pipe sleeve, a telescopic rod and a spring, the telescopic rod is slidably arranged in the pipe sleeve, the positioning wheel is rotatably arranged at the end of the telescopic rod and abuts against the side wall of the pier, the two ends of the spring are connected with the telescopic rod and the bottom wall of the pipe sleeve respectively, the spring provid