Anti-falling device for climbing up and down iron tower and using method of anti-falling device

The invention belongs to the field of power transmission line operation and maintenance, and particularly relates to an anti-falling device for climbing up and down an iron tower, which comprises a hook, a speed difference automatic controller, a hanging rod, a protection rope and a connecting ring, the hook is of a concentric-square-shaped structure, an opening allowing iron tower materials to be hung in is formed in the lower portion of the concentric-square-shaped structure, the tail end of the hook is in a screw spike shape and is fixedly connected with the hanging rod, the speed difference automatic controller is fixed to the hook through a bolt, a protection rope is contained in the speed difference automatic controller, and the tail end of the protection rope is connected with a connecting ring. The problem that a user needs to frequently bend down to take off the hook can be solved. 本发明属于输电线路运维检修领域，具体涉及一种上下铁塔防坠落装置，包括：挂钩、速差自控器、挂杆、保护绳和连接环；所述挂钩为回字型结构，回字型结构下方有一供挂入铁搭塔材的开口，挂钩末端为螺丝钉状，挂钩末端与挂杆紧固连接，所述速差自控器通过螺栓固