Locking device for load transport vehicles

The locking device (1) has locking actuators (3,8) to which locking valve (6) is hydraulically connected. A locking element (2) is mechanically connected with locking actuators. A load is locked to the vehicle portion by moving locking element from unlocking position into locking position. The locking element is engaged with the load in locking position. An outflow of hydraulic fluid from locking actuators is prevented using hydraulic shut-off valve so that locking actuators are hydraulically lockable. An independent claim is included for a load transporting vehicle.