摘要:
A pneumatic cylinder device (10) for trailer or semitrailer vehicles which, according to the angle of rotation between the truck (46) and the semi-trailer (35) or between the tractor (47) and the trailer (48), assumes an angular position which transmits the command for power assisted steering of the wheels on the steering or self-steering axle of the respective semi-trailer (35) or trailer (48) the pneumatic cylinder (11) is a single-action device and a base (24), the end of the latter attached to an additional pin (28) fixed on a semi-trailer (35) or, respectively, on a trailer (48), the cylinder (11) housing a piston (21) which slides along the cylinder and a rod (14; 26) connected to the piston (21), the rod (14; 26) acting as a longitudinally extending and transversally rigid tie rod for the presence of pressurised air supplied to the inside of the cylinder through a supply hole (23).
摘要:
An oleopneumatic actuator cylinder device for steering and self-centering for the alignment to a straight drive of steering or self-steering axles, in particular for rear axles of vehicles, is constituted by a single oleopneumatic actuator cylinder for each rear steering axles. The actuator cylinder comprises a pneumatic sector communicating with a respective pneumatic circuit, an oleodynamic sector communicating with a respective oleodynamic circuit, a stem kinetically connected to the a mechanical driving element to move the wheels of the vehicle, and a central body that delimits the pneumatic sector and the oleodynamic sector.
摘要:
A magnetic wedge device for application on the fifth wheel of the tractor of articulated vehicles, by means of incorporated permanent magnets, to provide the angular position of the fifth wheel respect to the axis of a semitrailer to one or more functional systems dependent on this angular position and in particular to the piloting of semitrailer axle steering systems, consists of a wedge-shaped body (10) with a flat upper surface (12) equipped with permanent magnets (13) that maintain the body in contact with the flat surface of the semitrailer, close to the coupling pin (14) of the fifth wheel (11), and two flat side surfaces (15) equipped with permanent magnets (16) that maintain the body in contact with the two inner surfaces (17) of th “V” shaped opening in the fifth wheel in a fully wedged condition. The device presents a reference or coupling point (P) on which the end of a mechanical, hydraulic, pneumatic or electronic device (D) is applied, providing mechanical, hydraulic, pneumatic or electronic piloting corresponding to the position of the coupling point P on the wedge which is in turn proportional to the angular position of the fifth wheel with respect to the axis of the semitrailer. FIG. 1
摘要:
A hydraulic power steering system for steering rear axles of vehicles comprises a distribution system (10) coupled to a wheel of the rear axle. The distribution system (10) has a core (12) encased in a casing (11) and rotatable to distribute pressurised fluid to a cylinder (40). The distribution system comprises resilient centring means in form of a sphere (22) and spring (23).