FIELD: railway transport; parking brakes.
SUBSTANCE: proposed parking brake with adjustable brake pressure and remote manual control is provided with locking device in form of rubberized-metal air chamber of brake cylinder and shutoff valve for holding brake leverage in brake applied position, change-over valve to change air delivery from brake cylinder to rubberized-metal air chamber through shutoff valve and brake valve for manual application of brakes. Housing of change-over valve and brake valve are made in form of double-acting pneumatic cylinders with spool-type pistons having two extreme, namely, upper and lower, stable fixed position. Two brake valves are manually remote controlled through pneumatic circuit of parking brake. Similar valve-type pressure regulators are installed on change-over valve and shutoff valve. Seats of valve in lower part of housing are provided with inlet air channel and four outlet axial air channels. One three-way and four disconnecting air cocks are designed for functional changing over of parking brake.
EFFECT: improved reliability of brake.
1 dwg
