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.