Fifth-wheel coupling

1. Fifth-wheel coupling ( 1 ) comprising:

a fifth-wheel coupling plate ( 2 ), on which an entry opening ( 4 ) for a kingpin ( 5 ) is disposed;

a locking device ( 100 ) for fixing the kingpin ( 5 ) in place;

a fixation element that is laterally movable from a locking position into an open position and vice versa, wherein the fixation element projects into the entry opening in the locking position and engages on the locking device ( 100 ); and

a security device ( 15 ) having a blocking element ( 40 , 400 ) that is laterally movable from a rest position into a blocking position, and vice versa;

wherein the blocking element ( 40 , 400 ) projects into the entry opening ( 4 ) at least in the blocking position, and the blocking element ( 40 , 400 ) is fixed in place in the blocking position when the fixation element is in the open position in unauthorized manner.

2. Fifth-wheel coupling according to claim 1 , characterized in that the blocking element ( 40 , 400 ) is disposed within the fifth-wheel coupling in covered manner.

3. Fifth-wheel coupling ( 1 ) according to claim 1 or 2 , characterized in that the fixation element is a locking latch ( 20 ) and that the blocking element ( 40 ) interacts with the locking latch ( 20 ).

4. Fifth-wheel coupling ( 1 ) according to claim 3 , characterized in that the blocking element ( 40 ) is disposed to lie opposite the locking latch ( 20 ) with respect to the entry opening.

5. Fifth-wheel coupling according to claim 3 , characterized in that the locking latch ( 20 ) and the blocking element ( 40 ) have engagement means.

6. Fifth-wheel coupling according to claim 5 , characterized in that the engagement means comprise engagement projections ( 26 ) and engagement hooks ( 49 ).

7. Fifth-wheel coupling according to claim 3 , characterized in that the blocking element ( 40 ) has a first spring device ( 43 ) that presses the blocking element ( 40 ) against the locking latch ( 20 ) in the locking position of the locking latch ( 20 ).

8. Fifth-wheel coupling according to claim 1 or 2 , characterized in that the fixation element is a locking latch ( 20 ) and the blocking element ( 40 ) is a blocking latch.

9. Fifth-wheel coupling according to claim 8 , characterized in that the blocking latch can be displaced in the same direction as the locking latch ( 20 ).

10. Fifth-wheel coupling according to claim 8 , characterized in that the blocking latch is releasably attached to the locking latch ( 20 ).

11. Fifth-wheel coupling according to claim 10 , characterized in that a tip ( 41 ) of the blocking latch ( 40 ) is releasably attached to a tip ( 21 ) of the locking latch ( 20 ).

12. Fifth-wheel coupling according to claim 10 , characterized in that the locking latch ( 20 ) and/or the blocking latch has/have at least one magnet ( 48 ).

13. Fifth-wheel coupling according to claim 1 or 2 , characterized in that the blocking element ( 40 , 400 ) can be fixed in place in the rest position.

14. Fifth-wheel coupling according to claim 13 , characterized in that means for fixation and release of the blocking element ( 40 , 400 ) are provided, which comprise a first activation device ( 50 ) having disabling means and having at least one actuator ( 54 ).

15. Fifth-wheel coupling according to claim 14 , characterized in that the disabling means is a disabling pin ( 56 ) or a pawl.

16. Fifth-wheel coupling according to claim 15 , characterized in that the disabling pin ( 56 ) can be displaced perpendicular to the movement direction of the blocking element ( 40 ).

17. Fifth-wheel coupling according to claim 14 , characterized in that the blocking element ( 40 ) has at least a first recess ( 44 ) for engagement of the disabling means.

18. Fifth-wheel coupling according to claim 14 , characterized in that the first activation device ( 50 ) is connected with a control device ( 70 ).

19. Fifth-wheel coupling according to claim 18 , characterized in that the activation device ( 50 , 60 ) is disposed in a housing ( 52 , 62 ).

20. Fifth-wheel coupling according to claim 19 , characterized in that the housing ( 52 , 62 ) is screwed on by way of the top of the fifth-wheel coupling plate ( 2 ).

21. Fifth-wheel coupling according to claim 19 , characterized in that the housing ( 52 , 62 ) is welded or riveted onto the fifth-wheel coupling plate ( 2 ).

22. Fifth-wheel coupling according to claim 19 , characterized in that the housing ( 52 , 62 ) consists of cast iron, cast steel, high-strength light metal, or high-strength plastic.

23. Fifth-wheel coupling according to claim 14 , characterized in that the blocking element ( 40 ) is adjustable in its rest position.

24. Fifth-wheel coupling according to claim 14 , characterized in that the at least one actuator ( 54 , 64 ) is a coil, a cylinder, a servo motor, or a hydraulic drive.

25. Fifth-wheel coupling according to claim 1 or 2 , characterized in that the blocking element ( 400 ) is disposed at a distance from the locking device ( 100 ).

26. Fifth-wheel coupling according to claim 25 , characterized in that the blocking element ( 400 ) is disposed within a second half of the entry opening ( 4 ).

27. Fifth-wheel coupling according to claim 25 , characterized in that the blocking element ( 400 ) is held in the blocking position by means of a second spring device ( 80 ), and can be moved to release the entry opening ( 4 ) by the kingpin ( 5 ) that is moving in or out, counter to the force of the second spring device, and that the blocking element ( 400 ) can be fixed in place in the blocking position.

28. Fifth-wheel coupling according to claim 25 , characterized in that the blocking element ( 400 ) is a blocking latch that is disposed so as to move perpendicular to the longitudinal axis of the entry opening ( 4 ).

29. Fifth-wheel coupling according to claim 25 , characterized in that a disabling device ( 82 ) is provided, which disables the blocking element ( 400 ) in its blocking position.

30. Fifth-wheel coupling according to claim 29 , characterized in that the disabling device ( 82 ) has a disabling piece ( 84 ) and a third spring device ( 86 ) that holds the disabling piece ( 84 ) in a disabling position.

31. Fifth-wheel coupling according to claim 30 , characterized in that the disabling piece ( 84 ) has an actuator ( 88 ) that moves the disabling piece ( 84 ) from the disabling position into a release position, counter to the force of the third spring device ( 86 ).

32. Fifth-wheel coupling according to claim 31 , characterized in that the actuator ( 88 ) is connected with a control device ( 70 ).

33. Fifth-wheel coupling according to claim 32 , characterized in that the control device ( 70 ) is connected with a monitoring device ( 72 ).

34. Fifth-wheel coupling according to claim 33 , characterized in that the monitoring device ( 72 ) is an anti-theft device.

35. Fifth-wheel coupling according to claim 30 , characterized in that the blocking element ( 400 ) has a pawl ( 90 ) that interacts with the disabling piece ( 84 ).

36. Fifth-wheel coupling according to claim 35 , characterized in that the pawl ( 90 ) fixes the disabling piece ( 84 ) in place counter to the force of the third spring device ( 86 ).

37. Fifth-wheel coupling having a fifth-wheel coupling plate ( 2 ), on which an entry opening ( 4 ) for a kingpin ( 5 ) is disposed, having a locking device ( 100 ) for fixing the kingpin ( 5 ) in place, and having a fixation element that engages on the locking device ( 100 ), which fixation element can be moved from a locking position into an open position and vice versa, characterized in that

a security device ( 15 ) having a blocking element ( 40 , 400 ) is provided, which blocking element can be moved from a rest position into a blocking position, and vice versa,

the blocking element ( 40 , 400 ) projects into the entry opening ( 4 ) at least in the blocking position,

the blocking element ( 40 , 400 ) can be fixed in place in the rest position,

the blocking element ( 40 , 400 ) is fixed in place in the blocking position when the fixation element is in the open position in unauthorized manner,

means for fixation and release of the blocking element ( 40 , 400 ) are provided, which comprise a first activation device ( 50 ) having disabling means and having at least one actuator ( 54 ), and

a second activation device ( 60 ) having disabling means and an actuator ( 64 ) for fixing the fixation element in place in its locking position are provided.

38. Fifth-wheel coupling according to claim 37 , characterized in that the second activation device ( 60 ) is connected with a control device ( 70 ).

39. Fifth-wheel coupling according to claim 37 , characterized in that at least one of the first activation device ( 50 ) or the second activation device ( 60 ) is disposed on the fifth-wheel coupling ( 1 ) so as to be visible from the outside.

40. Fifth-wheel coupling according to claim 39 , characterized in that at least one of the first activation device ( 50 ) or the second activation device ( 60 ) has an optical and/or acoustical device ( 58 ).