Steel pipeline arc plate fishing device

A steel pipeline arc plate fishing device comprises a flexible connection assembly and an arc plate adsorption assembly, and is characterized in that the flexible connection assembly comprises an upper sleeve, a lower sleeve, two fixed pulleys and a plurality of limiting wheels; the upper sleeve is fixedly connected with the lower sleeve; fixed pulley mounting shafts are fixedly mounted on the lower sleeve; the two fixed pulleys are mounted on the two fixed pulley mounting shafts correspondingly; steel wire ropes are arranged on the fixed pulleys; an upper connecting plate is fixedly arrangedon the lower end face of the lower sleeve; the arc plate adsorption assembly comprises a lower connecting plate, two strong magnets and four hoisting rings; the hoisting rings are fixedly arranged onthe upper end face of the lower connecting plate; the two ends of the steel wire ropes are fixedly arranged on the corresponding hoisting rings; the two ends of the lower end face of the lower connecting plate are each fixedly