Brake trains

During normal operation automatic brakes following recommended reducing the speed of the maximum and the start of holiday: the descent 0,006-0,008 - 10-15 km / h while descending 0,008-0,012 - 15-20 km / h and the descent on the 0,012-0,018- 25-35 km / h. Subsequent steps in the inhibition of cyclic control must be run on automatic brakes 0,2-0,3 kg/cm2 higher than the first braking, taking into account the fact that the working chambers of tailing cars do not have time to recharge to full charging pressure.

With loaded freight trains to long (300-350 s) the process of braking on a downhill (with no engine braking) should be calculated so that the entire descent to proceed by doing no more than three or four repeated cycles of inhibition and leave to avoid the increased depletion of the brake system. Manage traffic on the descent should be so at the end of the descent the train was moving at full speed, which requires a minimum cost of fuel or electricity to increase speed (if required) when the train after the descent.

If you run a train on the descent steeper 0,018 mountain mode to trigger the automatic brakes should be to achieve maximum speed, given that the speed on a steep descent after the activation of automatic brakes in place for some time increases. Start braking is recommended at a rate below the set at 5-10 km / h on the downhill slope of 0,018-0,025, 10-15 km / h - on steep slopes 0,025-0,035. At the same time in a freight train loaded on steep slopes up to 0,030 at once reduce the pressure in the brake line on 0,7-0,8 kg/cm2, on steep descents 0,030-0,035 - by 0,8-0,9, kgf/cm2 and in an empty train - on 0,5-0,6 kg/cm2. Next, adjust the braking force in the direction of increase or decrease in steps depending on the speed and profile path. Duration of continuous braking define the profile.

If possible, you should make a full vacation, keeping in mind that only with full vacation avtoregulyatory lever transmission to regulate the output rod cars. In addition, during more than 10 minutes in the working chambers of the individual air distributors because of their looseness there is some reduction in pressure, resulting in the cars when the service brake begin to inhibit the weaker, because of which increases the work of braking, brake pads for wear and heating of the wheels on the cars with more tight working chamber. On electrified lines with very long, steep slopes, usually operated by electric locomotives with electric (regenerative or rheostat) brake that enables the most accurate maintenance of preset speeds, raises the inexhaustible automatic brakes, reduces wear on brake pads, while the recovery returns electricity to the contact network. The use of electric braking on the descents required. His inclusion and the transition from one wiring traction motors on the other produce at a rate of repetition less than the rate to be determined automatically for the selected circuit connections.