Brake trains

VA Regulations designed to ensure a smooth, without large longitudinal braking freight train loaded with a length of more than 350 axes. If the mass of the train up to 6 tons, the provision was used in case of need the service braking stage more than 0,8 kgf/cm2. At the same time within the first stage of equalization tank V defuses the situation, and then transferred to the handle of the crane operator to position VA and having received the necessary relaxation of equalization tank in position IV. When you want a rapid reduction in the rate applying full braking force in one step is allowed on the trains of up to 6 tons of produce relaxation of equalizing reservoir V status for the entire range to reduce the pressure 1,5 - 1,7 kgf/cm2.

In freight trains weighing over 6 tons of service braking from the head locomotive perform discharge equalizing reservoir V position in the 0,5 - 0,6 kgf / cm 2, followed by transfer handles the crane operator to position VA. After obtaining the necessary steps or complete inhibition faucet driver transferred to position IV. The provision VA surge chamber connected with the atmosphere through a hole diameter 0,7 mm and its discharge occurs slowly (from 5 to 4 kg/cm2 for 30-40 s). This slows down the filling of the brake cylinder cars in the head of the train and provides a smooth braking (with some lengthening of the braking distance). Such management is appropriate to apply the automatic brakes on the trains and less weight in the winter to reduce the longitudinal forces and to prevent breakage train.

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Subtopics:

• Proper use