SAFETY DEVICE FOR VEHICLE FURNISHED WITH AIR BRAKE SYSTEM Russian patent published in 2001 - IPC

FIELD: transport engineering. SUBSTANCE: invention relates to safety engineering in operation of vehicles with air brake system and cab doors and it is aimed at preventing starting of vehicle from halt when doors are open or pressure in brake system is insufficient. According to invention, additional valve is installed in brake system provided with air chamber with spring-loaded diaphragm and two air valves in vehicle cabin. First input of additional valve is coupled directly with outputs of air valves in cabin by pneumatic lines providing release of brake shoes when vehicle doors are being opened, thus braking the vehicle, second input is connected with brake system, and output, with air chamber. EFFECT: improved safety in operation of vehicle. 1 dwg