Actuating system and device for gearbox comprising actuating system

An actuation system, the actuation system comprising: an actuator (4); a main shaft (3); a threaded tube (5) which engages with the main shaft (3), which threaded tube (5) can be moved axially along the main shaft (3), which threaded tube (5) can be connected at a time to a moving element, i.e. To a shift fork (8) or to a parking element, whereby when the threaded tube (5) is connected to the shift fork (8), the threaded tube (5) can be moved between a first position, in which the threaded tube (5) is in contact with the shift fork (8), a neutral position, in which the threaded tube (5) is in contact with the shift fork (8), and a third position, in which the threaded tube (5) is in contact with the parking element. The threaded tube (5) closes a first shift element of the gearbox, in a neutral position in which all shift elements are open and the gearbox is not able to transmit power, and in a third position in which the threaded tube (5) closes a second shift element of the gearbox and can be moved to a fou