Movable Independent Crane System Used Temporarily For Moving or Replacing Components and Mounting Wind Generators

摘要

Disclosed is a movable independent crane system for moving or replacing components during maintenance operations and for mounting wind generators including auxiliary portal crane ( 3 ) providing a portal structure designed to be movable around a pod ( 1 ) about a rotation shaft ( 23 ). Said mobile independent crane system includes raising devices ( 100 ) being part of the crane system and designed to allow self-raising of the crane system because the mobile independent crane system is anchored to the pod through an anchoring unit ( 4 ) and because the mobile independent crane system is designed to operate over said pod ( 1 ) and outside pod ( 1 ) sides.