FIELD: rail way transport; train parking brakes.
SUBSTANCE: proposed automatic mechanical parking brake contains special flexible member in form of spring with static deflection of 20 mm under action of maximum brake pressure, rack-type lock of brake cylinder rod with wedge clamp and pneumatic drive, valve-type pressure regulator and two three-way air cocks. Said flexible member is located between rod of brake cylinder piston and brake rack train. Pneumatic drive includes two racks fastened to rod of brake cylinder, two wedge clamps with pressure shafts provided with tooth cut similar to teeth of racks, two pneumatic drives in form of double-acting pneumatic cylinders with pistons and springs. Valve-type pressure regulator of shutoff and control valve consists of rubber valve attached to rubber diaphragm, guide bushing, adjusting spring, pressure rod, housing consisting of two parts with flanged joint and thread on upper part of housing, adjusting cover with thread, valve seat in lower part of housing with supply air line and four outgoing axial air channels.
EFFECT: improved reliability of rail vehicle parking brake.
1 dwg
