Wind energy installation working gantry and wind energy installation

A locking device for closing off a railing on a working platform, the locking device comprising:

• a closure element arranged in a transfer region to a lift;
• and
• a locking mechanism configured to receive a first locking element and a second locking element, wherein the first locking element is connected to the lift and the second locking element is connected to the closure element, locking mechanism being adapted to release one of the first and second locking elements in response to locking the other of the first and second locking elements relative to the locking device.

A lift for a wind power installation having a ground plane and at least one working gallery, the lift being adapted to travel between the ground plane and the at least one working gallery and has an access portion, the lift comprising:

• a locking device having a locking mechanism for receiving a first locking element and a second locking element, wherein the first locking element is connected to the lift and the second locking element is connected to a closure element of the at least one working gallery, the locking mechanism being adapted to release one of the first and second locking elements in response to locking the other of the first and second locking elements relative to the locking device.

16-19. (canceled)

The method according to claim 20 further comprising preventing the lift from traveling in response receiving the second locking element.

The method according to claim 20 wherein the first locking element extends from the lift to the locking mechanism located on the closure element via an access portion.