Safety device for an operator during the servicing of a hub of a wind turbine

Abstract

A safety device, for ensuring the safety of an operator, is arranged in a rotor, in particular of a wind turbine. The device has a platform with a number of standing surfaces, at least one of the standing surfaces being substantially horizontal when the safety device is used as intended, and also having a securing system for securing the platform to a hub of the rotor and/or to an inner face of a rotor housing of the rotor.

1 . A safety device for the safety of an operator in a rotor, comprising
 a platform having a number of standing surfaces of which when the safety device is used as intended at least one standing surface lies substantially horizontal,   fixing device for fixing the platform on a hub of the rotor and/or on an inner side of a rotor housing of the rotor.   
     
     
         2 . The safety device according to  claim 1   wherein the safety device is mounted fixed on the hub of the rotor and/or on the inner side of the rotor housing.   
     
     
         3 . The safety device according to  claim 1   wherein the platform is arranged relative to each two connecting flanges of the rotor blades on the hub so that a standing surface on a side of the platform facing the rotor housing lies substantially parallel to an vertex face of the hub.   
     
     
         4 . The safety device according to  claim 1   wherein the platform divides a hollow chamber between the hub and the inner side of the rotor housing into substantially at least two hollow chamber regions separated from one another.   
     
     
         5 . The safety device according to  claim 1   wherein the platform comprises three platform elements each with at least one standing surface which form a triangle.   
     
     
         6 . The safety device according to  claim 5   wherein at least one of the platform elements has at least one opening as access for an operator.   
     
     
         7 . The safety device according to  claim 5   wherein the platform comprises bridging elements which span the contact points of the platform elements at the respective inner sides of the platform elements facing a rotor axis (R).   
     
     
         8 . The safety device according to  claim 7   wherein the platform elements stand at their inner sides facing the rotor axis (R) at an angle (β) of 120° to the inner sides of the respective adjoining bridging elements which are likewise directed towards the rotor axis (R).   
     
     
         9 . The safety device according to  claim 5   wherein the fixing device comprises strut elements which connect the platform at the contact points of the platform elements to the inner side of the rotor housing.   
     
     
         10 . The safety device according to  claim 9   wherein the strut elements are fastened in the region of interfaces of segments of the rotor housing.   
     
     
         11 . The safety device according to  claim 9 , further comprising
 flat plates as platform elements and/or bridging elements and/or strut elements.   
     
     
         12 . The safety device according to  claim 5   wherein an extension (a) of the platform elements transversely to the rotor axis (R) comprises at least 1 m, as well as at most 5 m.   
     
     
         13 . A rotor with a safety device according to  claim 1 . 
     
     
         14 . A wind turbine with a safety device according to  claim 1 . 
     
     
         15 . A method for securing an operator with a safety device in a rotor the method comprising:
 positioning at least one standing surface of a platform of the safety device, when the safety device is used as intended, substantially horizontally wherein the platform is fixed on a hub of the rotor and/or on an inner side of a rotor housing of the rotor.   
     
     
         16 . The safety device according to  claim 1 ,
 wherein the safety device is adapted for a wind turbine.   
     
     
         17 . The safety device according to  claim 6 ,
 wherein at least one of the platform elements has at least one closing element for closing the opening.   
     
     
         18 . The safety device according to  claim 12 ,
 wherein the extension (a) of the platform elements transversely to the rotor axis (R) comprises at least 1.3 m, as well as at most 4 m.   
     
     
         19 . The safety device according to  claim 12 ,
 wherein the extension (a) of the platform elements transversely to the rotor axis (R) comprises at least 1.5 m, as well as at most 3 m.