How does Train Stop? | When we pull the train chain how train stops? | Train Break mechanism

Описание: How does Train Stop? | When we pull the train chain how train stops? | Train Break mechanism
Kartrathu Kai Alavu

In the air brake's simplest form, called the straight air system, compressed air pushes on a piston in a cylinder. The piston is connected through a mechanical linkage to brake shoes that can rub on the train wheels, using the resulting friction to slow the train.

air compressor
main reservoir
feeder pipe
brake pipe
Distributor tank
brake cylinder
break shoe
wheel

PEAV - Passenger Emergency Alarm Valve
PEASD - Passenger Emergency Alarm Control Device
Lever
Pilot Valve
Chain
Bp chamber
Release chamber

#train_chain_pull
#indian_railway
#break_mechanism

The pressurized air comes from an air compressor in the locomotive and is sent from car to car by a train line made up of pipes beneath each car and hoses between cars. The principal problem with the straight air braking system is that any separation between hoses and pipes causes loss of air pressure and hence the loss of the force applying the brakes. This could easily cause a runaway train. Straight air brakes are still used on locomotives, although as a dual circuit system, usually with each bogie (truck) having its own circuit.

The alarm chains are connected to the main brake pipe of a train. This brake pipe maintains constant air pressure, helping the train move smoothly. When the emergency chain is pulled, the air stored in the brake pipe escapes, through a small vent. The drop in air pressure leads to the slowing down of the train. The loco pilot quickly notices this drop in the air pressure and starts maneuvering the train. As the train runs on narrow rails, so it cannot be brought to a sudden standstill, as that could lead to imbalance causing a derailment.




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