The locking bar for a container on a semi-trailer has fastening means such as twist-locks (20,200) installed on the front cross member of the semi-trailer. The twist-locks can each be swivelled around at least one pivot point (21,23) from the engaged posit...

The mechanism for locking and unlocking bolts (21) for fixing a freight container in position comprises a hydraulic unit with a piston rod (40) which carries an outer (60) tube. Each of these carries a cam (52, 61). The cam (61) on the outer tube can be mo...