Abstract: A movable independent crane system for moving or replacing components during maintenance operations and for mounting wind generators, including an auxiliary portal crane providing a portal structure designed to be movable around a pod about a rotation shaft. The mobile independent crane system includes raising devices 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 and because the mobile independent crane system is designed to operate over the pod and outside the pod sides.

Abstract: 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.

Abstract: The invention concerns a sequential safety system associated with a moving closing panel driven so as to slide by an electric motor (6), this safety system including means (20) exploiting the signal originating from an optical fiber to stop and reverse the direction of movement of said moving panel in the event of a change in the signal, as well as additional safety means allowing the end-of-travel positions of the moving panel to be determined without ambiguity via the joint exploitation of the results derived from measuring the frequency of the pulses caused by the rotation of the electric motor (6) driving said moving panel, as well as data originating from the optical fiber.

Abstract: The invention concerns a sequential safety system associated with a moving closing panel driven so as to slide by an electric motor (6), this safety system including elements (20) exploiting the signal originating from an optical fiber to stop and reverse the direction of movement of said moving panel in the event of a change in the signal, as well as additional safety element allowing the end-of-travel positions of the moving panel to be determined without ambiguity via the joint exploitation of the results derived from measuring the frequency of the pulses caused by the rotation of the electric motor (6) driving said moving panel, as well as data originating from the optical fiber.

Abstract: The invention concerns a sequential safety system associated with a moving closing panel driven so as to slide by an electric motor (6), this safety system including means (20) exploiting the signal originating from an optical fibre to stop and reverse the direction of movement of said moving panel in the event of a change in the signal, as well as additional safety means allowing the end-of-travel positions of the moving panel to be determined without ambiguity via the joint exploitation of the results derived from measuring the frequency of the pulses caused by the rotation of the electric motor (6) driving said moving panel, as well as data originating from the optical fibre.