Hydraulic braking unit for trailer vehicle - has flow regulating and pilot valves positioned by brake pressure transmitter to control supply of oil flow

摘要

The activation of the piston (91) reacts on the pilot control valve (60, 61). A compression spring (96) exerting a force on the pilot control valve is arranged in the piston (91) acted upon by the pressure medium, on which a plunger (93, 95) reacts, operated by a solenoid (94). The solenoid is operated across an electrical switch (108) by a brake pedal (105). The electrical switch (108) is brought into engagement by the brake pedal (105) and activates the solenoid (94). A pressure switch (109) is arranged at the pressure medium connection (52) for the brake cylinder (53) so that a working connection is made with the solenoid (94). An arbitrarily operated solenoid (94) reacts on the piston (115), and the solenoid is activated across an electric switch (108) operated by the brake pedal (105). USE/ADVANTAGE - Hydraulic braking unit for trailer vehicle. Braking cylinder can be operated directly and immediately reducing dead time esp. suitable for large brake cylinders.