NOVELTY - The device has front and rear guide and support arrangements (8, 10) located at respective ends of a frame (2) for contacting a rotor blade in regions at or near rear and front edges of the rotor blade. A hoisting unit (22) includes a wire for suspending the frame in a triangular configuration comprising two suspension locations in a primary zone (150) located at or near the end of the frame and a secondary zone (152) respectively, where the locations are located along a side of the frame and configured to extend along a pressure side (54a) of the rotor blade.    USE - Device for enabling access to a rotor blade of a wind turbine, where device is connected to a vehicle i.e. trailer (all claimed).    ADVANTAGE - The supporting and guiding units of the device in relation to the rotor blade are configured, so as to automatically adapt to size and shape of the rotor blade, thus facilitating that the rotor blade is accessed along the whole length. The device is supporting against parts of the rotor blade in regions at or near the front and rear edges of the rotor blade, so that the support is maintained at the regions even though the regions move in dependence on the variations of the size and the shape of the rotor blade along the length, thus reducing friction of the device with the rotor blade. The device is provided with wires for suspending the frame in the triangular configuration and supported and guided by the rotor blade, thus ensuring a well-balanced position due to the fact that the centre of gravity of the device lying within the triangular suspension arrangement and the counterweight arrangements is dispensed, and hence minimizing weight. The device utilized by a user is secured in a reliable and dependable manner, and can access any desired positions virtually in relation to the wind turbine rotor blade, so that a large and heavy platform is avoided, thus ensuring that the necessary work is performed using a relatively light construction. The user is prevented from moving around on a relatively large platform, swerving under the influence of the wind and bouncing against the rotor blade and/or against the wind turbine tower, thus enhancing safety standard of the user. The device is transferred to the rotor blade in a relatively uncomplicated manner without using an extensive machinery while keeping the device relatively small in relation to the size of a state of the art wind turbines. The load placed on the surface of the rotor blade by individual contact units is determined, and the device is adjusted accordingly in such a manner that the load is kept below predetermined limits, so that the load is distributed evenly, thus ensuring a smooth movement of the device when it is moved along the rotor blade. The load or pressure of each contact unit is controlled when the friction is controlled correspondingly, thus avoiding abrupt movements and abrupt stop, and hence enhancing safety while utilizing the device.    DESCRIPTION OF DRAWING(S) - The drawing shows a top view of a device for enabling access to a rotor blade of a wind turbine in connection with a rotor blade and triangular suspension arrangement of the device.    Frame (2)    Front and rear guide and support arrangements (8, 10)    Hoisting unit (22)    Pressure side (54a)    Primary zone (150)    Secondary zone (152)