STEERING SYSTEM FOR INDUSTRIAL MACHINERY AND VEHICLE-REFRACTING ANGLE CHANGING METHOD

摘要

In accordance with a steering system (20) of the present invention, in a state where a first steering means (23) is not operated, a third signal pressure output means (28, 29) outputs a third signal pressure (PP3) in response to a second signal pressure (PP2) fed to the third signal pressure output means, and feeding and discharging control means (25) operates based on the third signal pressure (PP3), while in a state where the first steering means (23) is operated, the third signal pressure output means (28, 29) stops outputting of the third signal pressure (PP3) regardless of whether or not the second signal pressure (PP2) is fed to the third signal pressure output means, and the feeding and discharging control means (25) operates based on the first signal pressure (PP1)