Features of automatic brakes leave with full testing in the trains of varying lengths


In the passenger and freight trains up to 350 axes produced holidays automatic brakes of train crane driver handles the situation. Holiday train position ensures high reliability of vacation route with I status. However, in the long freight trains over 350 axes in the train leave the position of the crane driver handles the rate of pressure increase in the tail of the train line may not be sufficient to move the holiday to the position of the main pistons diffusers № 270-002 in low density of the rings, diaphragms and diffusers № 270 -005, which communicated with the main spool chamber through a hole in the plunger with a diameter of 0.3 mm (to move the trunk aperture required rate of pressure rise more than 0.1 kgf/cm2 for 20 s). Therefore, the number of freight trains with axes more than 350 brake is released when testing with the situation I handle faucet and over-line pressure of 0.5 kg/cm2 above the battery (with the shutter speed knob in the I position to a corresponding increase in surge tank pressure). In such a train at a charging pressure of 5,3-5,5 kg/cm2 in transit brake release handle faucet with time driver in the I position until the pressure in surge tank 5.8-6.0 kg/cm2 and at a charging pressure 6.0-6.2 kg/cm2 (at a mass of more than 6 thousand tons) - to a pressure of 6,5-6,8 kgf/cm2. This ensures a reliable vacation and on the way.