Tow hitch for vehicles, particularly for agricultural tractors comprising a positioning pin having safety locking means

摘要

An improved tow hitch comprises a system for positioning a pin constrained in positions of safety and non-interference with the tow unit. In particular, the tow hitch comprises a main body (11) having an upper lip (13) and a lower lip (14) defining a mouth (12) suitable for receiving, in use, a tow eye of a trailer. A locking pin (16a, 16b) comprises an appendage (35, 41) which, for an arc of predetermined amplitude of the axial orientation of the pin (16a, 16b), corresponding to incorrect insertion of the pin, interferes with walls (28, 30) of the main body (11) of the tow hitch, preventing complete insertion of the locking pin (16a, 16b).