Coupling arrangement for rail vehicles

A coupling arrangement for coupling together rail vehicles such as railway carriages and locomotives, consisting of a coupling head comprising a coupling housing joined to the rail vehicle and having an active coupling device in the form of a plunger movable between an outer and an inner position and designed to cooperate with a similar plunger in a corresponding coupling head when two coupling heads are coupled together, the plungers being movable in directions that are substantially perpendicular to the longitudinal directions of the coupling heads and can be moved away from each other by mutual contact at interlocking, and with the aid of a disengaging means influencing respective plungers at uncoupling, and a locking device in the coupling arrangement which comprises a locking member arranged to be brought into direct contact with the plunger when said plunger is in said outer position and to prevent the plunger being displaced from said outer position.