HYDRAULIC SYSTEM FOR CONTROLLING BRAKES, CLUTCHES AND BRAKES-CLUTCHES

摘要

The system is intended to control the time duration of the soft pushing action carried out when engaging the clutch and/or the brakes of hydraulic brakes-clutches to actuate presses and similar machines, as well as to cancel, at a predetermined instant, the smooth braking system in order to produce a rapid stopping of the machine. To this effect, two relief valves (16 and 17), an emergency valve (18) and two opening and closing valves (20 and 21) are used. A pressure switch (34) situated at the extremity of a labyrinth conduit (35) controls the position of the relief valves (16 and 17) as well as the emergency valve (18), the labyrinth conduit (35) being situated between the pressure switch (34) and the inlet (14) of the corresponding hydraulic fluid. The opening and closing valves (20 and 21) control the passage of the hydraulic fluid (oil) between the inlet (14) and the brake-clutch zone (22), and between said zone (22) and the outlet (19).