| 摘要 |
A fifth wheel coupling (4) for connecting tractor units (2) and semi-trailer s (3) for an articulated lorry (1), comprises a coupling device, arranged on t he tractor unit (2), for connecting and locking a kingpin fixed to the semi- trailer (3). According to the invention, the best pivoting properties may be achieved with an economical construction, whereby a ball joint (4) is used a s fifth wheel coupling, with the joint ball (5) and corresponding retaining clamp (6) on one side and the ball socket (7) which, in the working position , encloses the joint ball (5) from above and shaped spigot piece (8) on the other side. Said joint ball (5) and retaining clamp (6) replace the coupling device and the ball socket (7) and the spigot piece (8) replaces the kingpin .
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