Container locking device and container locking method

1 . A container locking device ( 5 ) on a vehicle, adjustable between a locked state for locking a container with a corner fitting ( 7 ) to be transported on a loading surface ( 8 ) of the vehicle and an unlocked state in which a container can be unloaded or loaded, having a locking housing ( 1 ), a locking bolt ( 2 ) and a drive ( 3 ), wherein

the locking bolt ( 2 ) has a shaft ( 20 ) and a locking head ( 21 ), which in an unlocked state of the locking bolt ( 2 ) can be inserted via an opening in the corner fitting ( 7 ) of the container and in a locked state of the locking bolt ( 2 ) secures the container via projections engaging behind the opening in the corner fitting ( 7 ),

the locking bolt ( 2 ) is mounted with the shaft ( 20 ) of the locking bolt ( 2 ) in the locking housing ( 1 ) so that the locking bolt ( 2 ) can be moved both axially and rotatably about an axis of the locking bolt ( 2 ),

the locking bolt ( 2 ) is provided on the shaft ( 20 ) with a recess ( 23 ) that is inclined tangential to a circumference of the recess ( 23 ),

a wedge slide ( 4 ) is mounted in the locking housing ( 1 ) laterally, i.e. perpendicular to the axis of the locking bolt ( 2 ), so that the wedge slide ( 4 ) can be moved back and forth and can be driven by the drive ( 3 ),

the wedge slide ( 4 ) has an inclined support ( 41 ) which engages with the recess ( 23 ) of the locking bolt ( 2 ) during the lateral movement of the wedge slide ( 4 ) and gives the locking bolt ( 2 ) an axial movement,

the locking bolt ( 2 ) has a contact edge ( 24 ) on the shaft ( 20 ), which cooperates with a pushing protrusion ( 42 ) of the wedge slide ( 4 ) to give the locking bolt ( 2 ) a 90° rotational movement during the lateral movement of the wedge slide ( 4 ),

the locking device ( 5 ) is arranged on the locking housing ( 1 ), which has a spring-loaded lock ( 51 ) which is designed to intrude in the lateral movement path of the wedge slide ( 4 ),

the drive ( 3 ) has a double-acting pneumatic cylinder ( 30 ) with a laterally movable piston rod ( 31 ), the piston rod ( 31 ) being operatively connected to the wedge slide ( 4 ) in such a way that during a first part of the stroke movement of the drive ( 3 ) an idle stroke takes place and in a second part of the stroke movement the lateral movement of the wedge slide ( 4 ) takes place, and

the locking device ( 5 ) has a release mechanism for the lock ( 51 ), which releases the lock ( 51 ) during the idle stroke.

2 . The container locking device ( 5 ) according to claim 1 , wherein an emergency release ( 6 ) is provided with which the form-fitting lock ( 51 ) of the locking device ( 5 ) can be unlocked.

3 . The container locking device ( 5 ) according to claim 2 , wherein the emergency release ( 6 ) has first and second push elements ( 61 ) equipped with external threads, wherein

the first push element ( 61 ) can be screwed into a first threaded hole ( 54 ) in the locking device ( 5 ) and the second push element can be screwed into a second threaded hole in the locking housing ( 1 ), the first push element ( 61 ) releasing the lock and the second push element displacing the wedge slide ( 4 ) to open the lock.

4 . A method for locking a container with a corner fitting ( 7 ) to be transported on a loading surface ( 8 ) of the vehicle, the method comprising

seating the container with the corner fitting ( 7 ) onto the loading surface ( 8 ) of the vehicle, and

releasably locking the container to the vehicle using a container locking device ( 5 ) adjustable between a locked state for locking the container with the corner fitting ( 7 ) to be transported on a loading surface ( 8 ) of the vehicle and an unlocked state in which a container can be unloaded or loaded, the container locking device ( 5 ) comprising a locking housing ( 1 ), a locking bolt ( 2 ) and a drive ( 3 ),

wherein

the locking bolt ( 2 ) has a shaft ( 20 ) and a locking head ( 21 ), which in an unlocked state of the locking bolt ( 2 ) can be inserted via an opening in the corner fitting ( 7 ) of the container and, in a locked state of the locking bolt ( 2 ), secures the container via projections that engage behind the opening of the corner fitting ( 7 ),

the locking bolt ( 2 ) with the shaft ( 20 ) is both axially displaced in the locking housing ( 1 ) and rotatable about an axis of the locking bolt ( 2 ),

a wedge slide ( 4 ) in the locking housing ( 1 ) can be moved back and forth laterally by the drive ( 3 ), i.e. perpendicular to the axis of the locking bolt ( 2 ), and

during the lateral movement of the wedge slide ( 4 ) by the drive ( 3 ) of the wedge slide ( 4 ), the locking bolt ( 2 ) first rotates axially by 90° when adjusting from the unlocked state to the locked state and then axially downwards to be lowered towards the loading surface ( 8 ),

wherein when the locked state is reached, a spring-loaded lock ( 51 ) intrudes in the lateral movement path of the wedge slide ( 4 ) and prevents the wedge slide ( 4 ) from being reset, and wherein during a first part of the stroke movement of the drive ( 3 ) an idle stroke is carried out and during a second part of the stroke movement the wedge slide ( 4 ) is moved, whereby when unlocking a container from a locked state to an unlocked state of the container, the lock ( 51 ) is released during the first part of the stroke movement in the idle stroke and then during the second part of the stroke movement the wedge slide ( 4 ) is moved back whereby the locking bolt ( 2 ) is initially raised and then turned back to the unlocked state of the locking bolt ( 2 ).

5 . The method according to claim 4 , the method further comprising, upon failure of the drive ( 3 ), releasing the lock ( 51 ) mechanically by means of an emergency release ( 6 ) and mechanically resetting the locking bolt ( 2 ) to the unlocked state of the locking bolt ( 2 ).