Methods brake control on the court or down the slope a little


When the train stopped at a scheduled or to place speed limits appropriate to begin the first stage of deceleration, discharging line at 0.4-0.5 kg/cm2 in passenger trains (with the composition of more than 20 wagons with triple valves skorodeystvuyuschimi - 0.7 -0.8 kgf/cm2), a freight train loaded - at 0.6-0.7 kg/cm2, on steep downhill and with a length of more than 350 axes - 0.7 - 0.8 kg/cm2, and in the empty cargo trains - 0.3 - 0.5 kg/cm2.

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In the first stage electropneumatic brake operates at a pressure in the brake cylinder 0.8 - 1.5 kg/cm2. Lowering the rate to 25-50% of the primary, if necessary, increase the inhibition by increasing the discharge of the brake line for freight trains loaded with 0.4-0.5 kg/cm2, a passenger - 0.3 - 0.5 kg/cm2.

While driving in the first stage of braking surface is cleaned rolling of wheels, its heating and heating of brake pads, which improves adhesion between wheels and rails, and a more sustainable process of deceleration, increases the smoothness of braking.

In the cargo laden train in the velocity range 90-70 km / h average delay at the first stage of inhibition at the site can take 0.1 m/s2, and the speed of 70 km / h to stop when braking stage 1.0 kg/cm2 - 0 2 m/s2. Substituting in the formula, these values, we wasted time at a two-stage deceleration compared with single big step: a = 3.1, ie, the time difference is negligible.

Traffic lights with a yellow warning lamp typically serves as a signal reduction of speed, and its rate should not exceed prosledovaniya set. If the cargo laden train moves at a speed of 90 km / h, with the appearance of the locomotive at a traffic light yellow light avtotormoza should trigger the discharge line at 0.9-1.0 kg/cm2, and the empty train - pressure reduction of 0.5 -0.7 kgf/cm2.


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