FIELD: machine building.
SUBSTANCE: brake system of trailer and working machine comprises source of pressurized fluid medium, hydraulic main valve connected with source by fluid medium, and pneumatic main valve connected with source by fluid medium. Proportional control valve is also connected to source by fluid medium, and it comprises outlet, which is in fluid communication with inlet of hydraulic main valve and pneumatic main valve. System further includes a hydraulic outlet configured to be fluidly connected to the trailer's hydraulic braking system, and a pneumatic outlet configured to be fluidly connected to the pneumatic braking system of the trailer. Hydraulic outlet is connected in fluid communication with hydraulic main valve outlet, and the pneumatic outlet is connected in fluid communication with the pneumatic main valve outlet.
EFFECT: possibility of modulating both pneumatic component of trailer brake system and working machine, and hydraulic component, which simplifies operation of system and increases safety of its operation.
20 cl, 5 dwg
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