those longitudinal bearers 28 once again at two opposite sides of the carrier element 10 is a rotor blade receiving structure 17 comprising upper elements 11 side elements 14 and bottom elements 16 here the rotor blade receiving structure 17 is shown as being open at one side it will be appreciated that it is also possible to provide there a pivotably mounted element which permits the rotor blade receiving structure 17 to be closed at the open side so that a rotor blade see rotor blade 29 of fig2 accommodated therein is again enclosed at all four sides for the sake of clarity also the container corners see reference 20 in fig1 and the eyes see reference 26 in fig1 are not shown in the illustrated embodiment one skilled in the art will appreciate and understand that features described in one embodiment may be included in other embodiments this alternative embodiment of the apparatus according to the invention can weigh less and yet still have adequate strength fig4 shows a further embodiment of an apparatus 1 according to the invention this apparatus can be used to particular advantage in relation to rotor blades which have a through hole between the top side and the underside that is to say the reduced pressure side and the increased pressure side in the case of rotor blades which act on the basis.