IMPIANTO DI STERZATURA SERVOASSISTITA DELLE RUOTE STERZANTI DI UN ASSALE POSTERIORE DI UN VEICOLO COME SEMIRIMORCHIO O RIMORCHIO AVENTE CIRCUITO OLEODINAMICO DI COMANDO E CIRCUITO PNEUMATICO DI CENTRAGGIO E BLOCCAGGIO DELL'ASSALE CHE UTILIZZA L'IMPINTO DI ACCUMULAZIONE PNEUMATICA DEL VEICOLO

摘要

A system for steering the steerable wheels of a rear axle of a vehicle, such as a semitrailer (S) or a trailer (R) towed by a pulling vehicle (T), comprising a double-action hydraulic actuator (37) that acts on the steerable rear wheels (38,39) and is connected to a source of hydraulic pressure (29) so as to orientate the wheels in the steering direction and by the desired extent; a pneumatic device (6) is provided and connected to the source of compressed air that is mounted on the vehicle for the retention of the rear wheels (38,39) in the centered position, which corresponds to the straight-line travel trajectory of the vehicle by voluntary control or when the vehicle must travel faster than a preset value.