HYDRAULIC STEERING MECHANISM FOR VEHICLES

摘要

The hydraulic steering mechanism of the present invention includes a hydraulic steering that comprises an inlet duct, a control duct, a draining duct connected to a hydraulic fluid tank as well as working ducts connected with an operational hydraulic cylinder. The steering mechanism also includes a priority device which is connected to the inlet duct of the hydraulic steering, to supply pumps and to additional consuming devices. The structure of this hydraulic steering mechanism is characterised relative to traditional ones in that the priority device is fitted with a second and even a third slide valve so as to increase said steering mechanism safety as well as its operational speed. The slide valves are fitted with return springs having various loads that ensure the sequential operation of said slide valves starting from the first one.