Trailer hitch for a vehicle, especially for an agricultural tractor

A trailer coupling (1) for a vehicle, in particular a tractor, has two vertical cheeks (2) that are supported at the vehicle rear. Horizontal guide grooves (11) are provided on the cheeks (2), into which a horizontal plate (12) can be inserted and held. This plate (12) carries a coupling link (13) which serves for connection with a trailer. To lock the plate (12) to the cheeks (2), at least one locking pin (18) is provided, which penetrates both the cheeks (2) and the plate (12) (Figure 1).